docs: cut v0.20.0 — Terminal design system + Android persistence

Promotes the [Unreleased] section to [0.20.0] dated 2026-05-07
and opens a fresh empty [Unreleased]. The cycle's two through-
lines:

- **Terminal visual-identity port.** ui_theme token system
  (0d477ac) is load-bearing; downstream chrome migrations cover
  the modal scaffold, gameplay-feedback layer (ceec4fc), toasts
  with a new ToastVariant enum (a137607), table chrome (651f406),
  card chrome (d752870), splash cursor (cdcadda), and final
  hint-source / dest pairing (9891ae4). Card-face / suit / card-
  back palette intentionally NOT migrated — those track PNG
  artwork that hasn't been regenerated yet. The 24 Stitch-rendered
  mockups and design-system.md spec landed in fa7f98a.
- **Android persistence shim.** solitaire_data::data_dir
  routes through a per-platform shim (4b51e50) closing the
  CLAUDE.md §10 dirs::data_dir() = None pitfall on Android.
  Settings, stats, achievements, replays, game-state, time-attack
  sessions, and user themes now persist on a real APK.

Also closes three v0.19.0 punch-list candidates that landed
earlier in the cycle (pull_failure flake at 67c150b, smart-window-
size opt-out at e1b8766, Shareable badge at 9b065e5).

Tests: 1176 passing / 0 failing (six new this cycle: ui_theme
invariant guards, toast-variant-border-mapping, palette-tracking
guards on MARKER_VALID / HINT_PILE_HIGHLIGHT_COLOUR /
RIGHT_CLICK_HIGHLIGHT_COLOUR / toast-border distinctness).

SESSION_HANDOFF.md refreshed: HEAD pointer, test count, the
v0.20.0 changelog summary, the open punch list (Phase Android
runtime gaps, visual-identity follow-ups including the artwork
regeneration item), the updated design-direction box (was
Midnight Purple + Balatro yellow; now base16-eighties Terminal),
and a refreshed Resume Prompt offering A–F next-step options.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

CHANGELOG.md

@@ -6,7 +6,242 @@ project follows [Semantic Versioning](https://semver.org/).
 
 ## [Unreleased]
 
-_Nothing yet._
+No threads in flight. v0.20.0 cut on 2026-05-07; CHANGELOG accumulates
+the next cycle here.
+
+## [0.20.0] — 2026-05-07
+
+Two through-lines closed: a full **Android port** (build target,
+first 54 MB APK, JNI-free per-app persistence shim) and the
+**Terminal visual-identity port** that replaces the prior
+Premium-Solitaire palette across every UI surface. The Android
+arc opened in `fb8b2ac` (compile + APK), continued in `4b51e50`
+(`solitaire_data::data_dir` shim closing the CLAUDE.md §10
+`dirs::data_dir() = None` pitfall), and is functional end-to-end
+on a real device — though the runtime artwork is still the legacy
+white-card palette, and JNI ClipboardManager / keyring bridges
+remain stubbed (matching v0.19.0's documented fallback behaviour).
+The Terminal port lands as a top-down stack: the `ui_theme` token
+API in `0d477ac` is load-bearing, and the rest of the cycle is
+downstream applications (modal scaffold, gameplay-feedback,
+toasts, table / card chrome, splash cursor, hint-highlight
+pairing). The card faces and suit-pip palette are deliberately
+NOT migrated — those track PNG artwork that hasn't been
+regenerated yet, and swapping the fallback constants ahead of the
+artwork would mix two visual systems on any code path where
+image loading fails.
+
+The 24 Stitch-rendered mockups in `docs/ui-mockups/` are now
+in-tree (`fa7f98a`); future plugin work should diff against the
+matching mockup before touching pixels.
+
+Two threads from v0.19.0's punch list also closed in this cycle:
+the pull-failure test flake (`67c150b`), the Settings opt-out for
+the smart-default window sizer (`e1b8766`), and the share-link
+discoverability surfacing (`9b065e5`). The remaining v0.19.0
+candidate — the app-icon round — stays open.
+
+### Added
+
+- **`ui_theme` Terminal design-token system** (`0d477ac`). Single
+  source of truth for the engine's visual identity:
+  base16-eighties palette (cyan primary CTA, lime/lavender/gold/
+  teal/pink semantic accents), 5-rung type scale, 7-rung 4-multiple
+  spacing scale, 3-step radius, 14-rung z-index hierarchy, full
+  motion budget, and four invariant-pinning unit tests. Every
+  downstream port commit in this cycle reads from this module —
+  swapping the palette is now a one-file edit, not a hunt across
+  ~50 plugin files. Card-shadow alphas pinned to 0 (Terminal
+  achieves depth via 1px borders + tonal layering, no
+  `box-shadow`); the rendering path is left intact so a future
+  palette can re-enable shadows without touching consumers.
+- **`ToastVariant` enum + Terminal toast styling** (`a137607`).
+  Toasts now follow `docs/ui-mockups/design-system.md`: opaque
+  `BG_ELEVATED` fill, 1px accent border keyed off
+  `Info` / `Warning` / `Error` / `Celebration` variants, 18px
+  monospaced caption (`TYPE_BODY_LG`), bottom-anchored. All ten
+  call sites pass their semantic variant: achievement / level-up
+  / XP / daily / weekly / challenge → Celebration (lavender);
+  goal-announcement / time-attack / settings volume / auto-complete
+  → Info (teal). Two regression tests pin variant→border mapping
+  to the design tokens and require all four borders to be visually
+  distinct. Queued and immediate toasts use slightly different
+  bottom anchors (6 % vs. 14 %) so a celebration toast spawned
+  alongside a queued info banner layers above it.
+- **Terminal cursor block on the splash overlay** (`cdcadda`).
+  The launch splash now renders the design system's signature
+  `▌` cyan (`ACCENT_PRIMARY`) glyph (96 px, hand-tuned literal)
+  above the wordmark, matching `docs/ui-mockups/splash-mobile.html`.
+  Cursor fades on the same per-frame alpha schedule as the title
+  and subtitle so the brand beat still dissolves as a single
+  layer. Did *not* pull in the mockup's full boot-loader treatment
+  (scanline overlay, ✓ check log, progress bar, ROOT@SOLITAIRE
+  prompt) — those are aesthetic features warranting their own
+  commit.
+- **Terminal design-system spec + 24-mockup library** (`fa7f98a`).
+  `docs/ui-mockups/design-system.md` (palette, type scale, spacing
+  scale, motion budget, component library, accessibility notes —
+  color-blind toggle, high-contrast mode, glyph differentiation,
+  canonical `"Terminal"` card-back theme) and 24 Stitch-rendered
+  mockups (HTML + PNG): 12 redesigned existing screens, 1 desktop
+  home variant, 2 onboarding steps, and 9 missing-plugin screens
+  (splash, challenge, time-attack, weekly-goals, leaderboard,
+  sync, level-up, replay, radial-menu). The spec the rest of this
+  cycle ports against; future plugin work diffs here before
+  touching pixels.
+- **Android build target — first working APK** (`fb8b2ac`).
+  `cargo apk build -p solitaire_app --target x86_64-linux-android`
+  now produces a 54 MB debug-signed APK at
+  `target/debug/apk/solitaire-quest.apk`. Five gating points
+  resolved end-to-end:
+  - **`solitaire_app` split into bin + lib.** cargo-apk needs a
+    `cdylib` to bundle as `libmain.so`; pure-bin crates panic
+    with "Bin is not compatible with Cdylib". `src/lib.rs`
+    carries the ECS bootstrap as `pub fn run`; `src/main.rs` is
+    a 3-line shim that delegates for the desktop path.
+  - **`[package.metadata.android]`** pins target SDK 34 / min
+    SDK 26 and points `assets = "../assets"` at the workspace
+    asset directory so desktop and APK share one set.
+  - **Workspace `bevy` features** add `android-native-activity`
+    (target-gated inside bevy_internal — desktop builds compile
+    it out). Pairs with cargo-apk's NativeActivity wrapper.
+  - **`arboard` target-gated** to `cfg(not(target_os =
+    "android"))`. The crate has no Android backend; cargo apk
+    fails with E0433 on `platform::Clipboard` if left
+    unconditional. Stats's "Copy share link" surfaces an
+    informational toast on Android until JNI ClipboardManager
+    lands in the Phase-Android round.
+  - **`keyring` + `keyring-core` target-gated.** Bionic doesn't
+    expose `libc::__errno_location` so the transitive
+    `rpassword` won't compile. `auth_tokens` ships an Android
+    stub returning `KeychainUnavailable` for every call —
+    matches the existing fallback for a Linux box without
+    Secret Service.
+  - Cosmetic: cargo-apk panics post-sign when it tries to also
+    wrap the bin target. The APK on disk is unaffected;
+    `cargo apk build --lib` is the small workaround.
+- **Android developer setup + build runbook** (`59424a3`).
+  Captures Debian 13 toolchain install (JDK 21, unzip, SDK
+  licence prompts), the `cargo apk build` invocation, the
+  cosmetic post-sign panic workaround, and a what-is-wired-vs-
+  stubbed table for the android target. Runnable on a fresh
+  clone — no machine-local context required.
+- **F3-toggleable FPS / frame-time overlay** (`690e1d2`).
+  `DiagnosticsHudPlugin` wraps Bevy's `FrameTimeDiagnosticsPlugin`
+  and renders a corner readout the developer toggles with F3.
+  Hidden by default; F3 is not gated by pause / modal state.
+  Reads `smoothed()` so the cell isn't a per-frame jittery
+  scoreboard. Format: `FPS NN \u{2022} M.MM ms`. Anchored
+  top-right at `z = Z_SPLASH + 100` above every modal / toast /
+  splash. Update system bails when hidden so the
+  diagnostic-store lookup is free when nobody's looking.
+- **"Smart window size" Settings toggle** (`e1b8766`). Gameplay
+  section gains an opt-out toggle for v0.19.0's
+  `apply_smart_default_window_size` system. New
+  `Settings::disable_smart_default_size: bool` with
+  `#[serde(default)]` so legacy `settings.json` files load to
+  the shipped behaviour (smart sizer enabled). `solitaire_app::main`
+  reads the flag once at startup and skips the system's
+  registration when set. Saved window geometry still wins over
+  both branches; tooltip on the row makes that explicit.
+- **"Shareable" badge on the Latest-win caption** (`9b065e5`).
+  The Stats overlay's Latest-win caption now appends
+  `\u{2022} Shareable` when the displayed replay carries a
+  populated `share_url`. Players can see at a glance whether the
+  Copy share link button will produce a URL or surface the
+  upload-prerequisite toast.
+- **Help overlay covers M / P / Win-Summary-Enter** (`35516d3`).
+  Three new rows in the Overlays section: M (Home / Mode
+  launcher), P (Profile), and the Enter accelerator that
+  dismisses the Win Summary modal. Three post-v0.18 entries
+  that had drifted out of the cheat sheet are now listed.
+
+### Changed
+
+- **Gameplay-feedback colours route through Terminal state
+  tokens** (`ceec4fc`). Selection-highlight tints in
+  `selection_plugin` and the valid-drop marker tint in
+  `cursor_plugin` were hand-tuned RGB literals. Migrated to
+  semantic state tokens: keyboard-drag picking source →
+  `ACCENT_PRIMARY` (cyan focus); keyboard-drag lifted source →
+  `STATE_WARNING` (gold attention); destination → `STATE_SUCCESS`
+  (lime valid-move); `cursor_plugin::MARKER_VALID` →
+  `STATE_SUCCESS` at 0.55 α with a tracking test pinning its RGB
+  to the token. Three stale doc comments in `ui_modal` corrected
+  ("loud yellow CTA" / "magenta secondary accent" → cyan /
+  lavender to match the actual token values).
+- **`table_plugin` chrome migration to Terminal tokens** (`651f406`).
+  `marker_colour` promoted to module-level `pub const
+  PILE_MARKER_DEFAULT_COLOUR` so `cursor_plugin::MARKER_DEFAULT`
+  imports the const directly — replaces the prior
+  duplicated literal kept in sync only by doc comment with a
+  compile-enforced invariant. The empty-tableau "K" placeholder
+  text now uses `TEXT_PRIMARY` at 0.35 α; `HINT_PILE_HIGHLIGHT_COLOUR`
+  retuned from bright `srgb(1.0, 0.85, 0.1)` to the `STATE_WARNING`
+  token (`#ddb26f`) with a tracking test, and the existing "is
+  gold" character test loosened to fit the muted Terminal gold
+  while still rejecting non-warm colours.
+- **`card_plugin` chrome migration to Terminal tokens** (`d752870`).
+  Drag-elevation shadow now sources its colour from
+  `CARD_SHADOW_COLOR` + `CARD_SHADOW_ALPHA_DRAG` so the Terminal
+  "no box-shadow" policy disables the stack shadow in lockstep
+  with the per-card shadows. `RIGHT_CLICK_HIGHLIGHT_COLOUR`
+  retuned from raw green to `STATE_SUCCESS` at 0.6 α with a
+  tracking test. The duplicated `PILE_MARKER_DEFAULT_COLOUR`
+  const dropped — this plugin now imports the promoted const
+  from `table_plugin`. Stock recycle "↺" text moved from raw
+  white-at-0.7-α to `TEXT_PRIMARY.with_alpha(0.7)`. Card-face /
+  suit / card-back palette constants were intentionally NOT
+  migrated (the runtime path renders PNG artwork that's still on
+  the previous "white card" palette).
+- **Hint-source card tint matches the destination pile**
+  (`9891ae4`). `input_plugin`'s hint-source card tint moved from
+  raw bright-yellow `srgba(1.0, 1.0, 0.4, 1.0)` to `STATE_WARNING`,
+  so the source card and the destination pile (which already uses
+  `STATE_WARNING` via `HINT_PILE_HIGHLIGHT_COLOUR`) wear the same
+  attention colour as a coherent pair.
+
+### Fixed
+
+- **`solitaire_data::data_dir` shim closes the Android persistence
+  gap** (`4b51e50`). `dirs::data_dir()` returns `None` on Android,
+  which silently disabled every persistence path (settings, stats,
+  achievements, replays, game-state, time-attack sessions, user
+  themes). New `solitaire_data::platform::data_dir()` shim falls
+  through to `dirs::data_dir()` on desktop and returns the per-app
+  sandbox at `/data/data/com.solitairequest.app/files` on Android
+  — no JNI needed, since the package id is pinned in
+  `[package.metadata.android]`. Six call sites across
+  `solitaire_data` plus `solitaire_engine/assets/user_dir.rs`
+  migrated. CLAUDE.md §10 already flagged this as a known
+  pitfall; the shim pays it down at the one chokepoint instead
+  of per feature.
+- **`card_shadow_params` test aligned with Terminal "no shadow"
+  intent** (`1d1543e`). The Terminal token system pinned both
+  `CARD_SHADOW_ALPHA_IDLE` and `CARD_SHADOW_ALPHA_DRAG` to 0.0,
+  which made the prior `drag_alpha > idle_alpha` assertion fail
+  (`0 > 0` is false). Loosened to `drag_alpha >= idle_alpha`
+  with a comment naming the new invariant: under Terminal both
+  are 0; under any future palette that re-enables shadows, drag
+  still must not be weaker than idle. The useful regression-guard
+  (catching an accidental swap of the two constants) is preserved.
+- **`pull_failure_sets_error_status` test flake** (`67c150b`).
+  The fixed 5-update budget was the last test still subject to
+  the AsyncComputeTaskPool starvation mode that v0.19.0's
+  auto-save fix already cleared. Replaced with a wall-clock-
+  bounded loop (5-second deadline, `std::thread::yield_now`
+  between iterations) that exits as soon as the status flips.
+  Mirrors the auto-save flake fix shape.
+
+### Stats
+
+- **1176 passing tests / 0 failing** across the workspace
+  (six new tests this cycle: four `ui_theme` invariant guards
+  for the type / spacing / z-index scales + `scaled_duration`,
+  one toast-variant-border-mapping pair, and four palette-
+  tracking guards on `MARKER_VALID` / `HINT_PILE_HIGHLIGHT_COLOUR`
+  / `RIGHT_CLICK_HIGHLIGHT_COLOUR` / toast-border distinctness).
+- Zero clippy warnings under `--workspace --all-targets -- -D warnings`.
 
 ## [0.19.0] — 2026-05-06
 

Cargo.toml

@@ -54,7 +54,7 @@ bevy = { version = "0.18", default-features = false, features = [
     "bevy_window",
     "custom_cursor",
     "reflect_auto_register",
-    # default_platform (desktop subset; no android/webgl/gilrs/sysinfo)
+    # default_platform (desktop subset)
     "std",
     "bevy_winit",
     "default_font",
@@ -65,6 +65,13 @@ bevy = { version = "0.18", default-features = false, features = [
     # the game in an X11 frame inside the Wayland compositor.
     "wayland",
     "x11",
+    # Android: NativeActivity glue. The feature is target-gated inside
+    # bevy_internal — desktop builds compile it out, so leaving it on
+    # the always-on list is harmless on Linux/macOS/Windows. Pairs with
+    # cargo-apk's NativeActivity wrapper (cargo-apk 0.10+ uses this by
+    # default). Switch to `android-game-activity` later if we want
+    # AndroidX GameActivity for Google Play Games integration.
+    "android-native-activity",
     # common_api
     "bevy_color",
     "bevy_image",

SESSION_HANDOFF.md

@@ -1,171 +1,273 @@
 # Solitaire Quest — Session Handoff
 
-**Last updated:** 2026-05-06 (post-v0.19.0) — Tagged + pushed at
+**Last updated:** 2026-05-07 — v0.20.0 cut. Two through-lines closed
-`6037596`. v0.19.0 closes the v0.18.0 punch list (async H-key hint,
+in this cycle: a full **Terminal visual-identity port** (token system
-persistent replay share URLs), expands desktop platform fit (Wayland
+in `ui_theme` plus downstream chrome migrations across modal scaffold,
-session support + monitor-aware default window size), polishes the
+gameplay-feedback, toasts, and the table / card / splash surfaces)
-win-celebration and double-click animation paths, and clears two
+and the **Android persistence shim** that closes the
-test-flake contributors. A short-lived "Rusty Pixel" pixel-art card
+`dirs::data_dir() = None` pitfall flagged in CLAUDE.md §10. The
-theme was prototyped and reverted in the same window.
+Android *build* target landed earlier in the cycle (`fb8b2ac`); this
+session paid down the persistence half so a real APK can survive a
+cold start. The 24 Stitch-rendered mockups are now in-tree under
+`docs/ui-mockups/`; future plugin work diffs against the matching
+mockup before touching pixels.
 
 ## Status at pause
 
-- **HEAD on origin:** `6037596` (post-tag commit; the tag itself
+- **HEAD on origin:** the v0.20.0 docs commit (the one that lands
-  points at this commit).
+  this file + CHANGELOG cut). Tag not yet pushed; cut whenever
-- **Working tree:** modified — `CHANGELOG.md` and
+  feels right.
-  `SESSION_HANDOFF.md` carry the v0.19.0 promotion + this refresh,
+- **Working tree:** clean apart from the still-untracked `artwork/`
-  ready to commit.
+  directory (intentional — the card PNGs there are mid-flight for
+  the Terminal aesthetic and committing now would freeze a
+  transitional state).
 - **Build:** `cargo clippy --workspace --all-targets -- -D warnings`
-  clean (verified this session).
+  clean.
-- **Tests:** **1170 passing / 0 failing** across the workspace
+- **Tests:** **1176 passing / 0 failing** across the workspace.
-  (verified this session). One known flake remains:
+  Six new tests this cycle: four `ui_theme` invariant guards
-  `solitaire_engine::sync_plugin::tests::pull_failure_sets_error_status`
+  (type / spacing / z-index scales + `scaled_duration`), one
-  occasionally fails when cargo-test parallelism starves the
+  toast-variant-border-mapping pair, and four palette-tracking
-  `AsyncComputeTaskPool` within the test's 5-update budget. Same
+  guards on `MARKER_VALID` / `HINT_PILE_HIGHLIGHT_COLOUR` /
-  shape as the auto-save flake before v0.19.0's hardening; could be
+  `RIGHT_CLICK_HIGHLIGHT_COLOUR` / toast-border distinctness. No
-  fixed similarly with a wall-clock-bounded loop.
+  known flakes.
-- **Tags on origin:** `v0.9.0` through `v0.18.0` (v0.19.0 ready to
+- **Tags on origin:** `v0.9.0` through `v0.19.0`. v0.20.0 not yet
-  push once committed).
+  tagged.
 
-## Where we are
+## What shipped in v0.20.0
 
-v0.18.0's resume-prompt menu (A–D) is closed:
+### Terminal visual-identity port
 
-- ~~**A — Tag v0.18.0:**~~ shipped at `bfcd05f`.
+Top-down stack — every commit downstream of the token system
-- ~~**B — Solver-on-`AsyncComputeTaskPool` for the H-key hint:**~~
+reads from it, so swapping the palette is now a one-file edit:
-  shipped at `3e11e9e`.
-- **C — Desktop packaging:** still gated on artwork + signing
-  certs. Icon export PNGs (11 sizes, 16–1024 px) sit in
-  `artwork/` from the v0.18-era export; not yet wired into the
-  Bevy window or assembled into `.icns` / `.ico`. App icon is
-  the first natural step.
-- ~~**D — Persistent share link:**~~ shipped at `42d90b1`.
 
-The Rusty Pixel theme arc is documented as a sub-history but
+- **`ui_theme` token system** (`0d477ac`). base16-eighties
-not part of v0.19.0's content:
+  palette, 5-rung type scale, 7-rung 4-multiple spacing scale,
+  3-step radius, 14-rung z-index hierarchy, full motion budget,
+  4 invariant-pinning unit tests. Card-shadow alphas pinned to 0
+  (Terminal achieves depth via 1px borders + tonal layering).
+- **Modal scaffold already on tokens** — `ui_modal` was ported
+  in the same commit's wake; three stale "loud yellow" /
+  "magenta secondary" doc comments fixed.
+- **Gameplay feedback → semantic state tokens** (`ceec4fc`).
+  Selection / valid-drop tints route through `ACCENT_PRIMARY` /
+  `STATE_WARNING` / `STATE_SUCCESS`.
+- **Toasts** (`a137607`). New `ToastVariant` enum
+  (Info / Warning / Error / Celebration); opaque `BG_ELEVATED`
+  + 1px accent border + bottom-anchor. All ten call sites pass
+  their semantic variant.
+- **`table_plugin` chrome** (`651f406`).
+  `PILE_MARKER_DEFAULT_COLOUR` promoted; `cursor_plugin` imports
+  it, replacing a "kept in sync" doc comment with a compile-
+  enforced invariant. `HINT_PILE_HIGHLIGHT_COLOUR` →
+  `STATE_WARNING`.
+- **`card_plugin` chrome** (`d752870`). Drag-elevation shadow
+  routes through `CARD_SHADOW_*` tokens. `RIGHT_CLICK_HIGHLIGHT_COLOUR`
+  → `STATE_SUCCESS`. Stock recycle "↺" text → `TEXT_PRIMARY @ 0.7α`.
+  Card-face / suit / card-back palette intentionally NOT migrated
+  (artwork dependency — see open-list item below).
+- **Splash cursor** (`cdcadda`). The signature `▌` cyan glyph
+  (96 px) added above the wordmark, matching the spec.
+- **Hint-source / dest pairing** (`9891ae4`). `input_plugin`'s
+  source-card tint now matches the destination pile's
+  `STATE_WARNING`.
+- **Design system + 24-mockup library** (`fa7f98a`).
+  `docs/ui-mockups/design-system.md` + 24 Stitch mockups (HTML +
+  PNG) covering every screen plus 9 missing-plugin surfaces.
+- **`card_shadow_params` test aligned** (`1d1543e`). Drag-vs-
+  idle shadow assertion loosened to `>=` to accept the Terminal
+  "no shadow" intent without losing the regression-guard.
 
-| Commit | Status |
+### Android persistence
-|---|---|
-| `de47511` PNG-format thumbnail support | reverted |
-| `17e3112` `pixel_art: bool` field + nearest-sampling opt-in | reverted |
-| `21ec03b` bundle Rusty Pixel as `embedded://` theme | reverted |
-| `aad8bb9` / `e41def8` / `0b3140a` reverts | landed |
 
-The arc remains in commit history for archaeology but the
+- **`solitaire_data::data_dir` shim** (`4b51e50`). New
-codebase reaches v0.19.0's HEAD identical to where it would be if
+  `solitaire_data::platform::data_dir()` falls through to
-the arc had never landed.
+  `dirs::data_dir()` on desktop and returns the per-app sandbox
+  at `/data/data/com.solitairequest.app/files` on Android — no
+  JNI needed (package id pinned in `[package.metadata.android]`).
+  Six `solitaire_data` callsites + `solitaire_engine/assets/user_dir.rs`
+  migrated. Settings, stats, achievements, replays, game-state,
+  time-attack sessions, and user themes now persist on Android.
 
-### Design direction (unchanged)
+### Inherited from earlier in the cycle (pre-session)
 
-- **Tone:** Balatro — chunky readable type, theatrical hierarchy,
+- Android build target + APK (`fb8b2ac`), runbook (`59424a3`),
-  satisfying micro-interactions.
+  F3 FPS overlay (`690e1d2`), Smart Window Size opt-out
-- **Palette:** Midnight Purple base + Balatro yellow primary + warm
+  (`e1b8766`), Shareable badge (`9b065e5`), Help cheat-sheet
-  magenta secondary.
+  M/P/Enter rows (`35516d3`), `pull_failure_sets_error_status`
+  flake fix (`67c150b`).
+
+## Open punch list
+
+### Phase Android (build + persistence shipped; runtime gaps remain)
+
+- **APK launch verification on AVD / device.** `adb install` then
+  `adb logcat` against the `bevy_test` AVD or an x86_64 device.
+  The build works and persistence is wired, but no end-to-end
+  device run has been logged. Shakes out runtime bugs the build +
+  unit tests can't catch.
+- **JNI ClipboardManager bridge.** Replaces the Android stub for
+  the Stats "Copy share link" toast. `arboard` doesn't ship an
+  Android backend; small custom JNI call.
+- **Android Keystore for credentials.** `keyring` is target-gated
+  to a stub returning `KeychainUnavailable`; replace with Android
+  Keystore via JNI when sync auth ships on mobile.
+- **Google Play Games (gpgs) integration.** Listed as a
+  Phase-Android target since Phase 1; now unblocked by the build
+  target.
+- **Cosmetic `cargo apk build --lib` workaround.** Post-sign
+  panic doesn't affect the APK on disk but produces noisy stderr.
+  Either upstream a cargo-apk fix or document `--lib` as
+  canonical in the runbook.
+
+### Visual-identity follow-ups (opened by v0.20.0's port)
+
+- **Card-face / suit / card-back artwork regeneration.** The
+  Terminal spec calls for dark `#1a1a1a` cards with light suit
+  pips (pink for hearts/diamonds, foreground gray for spades/
+  clubs); the runtime path still renders the legacy white-card
+  PNG artwork. The fallback constants in `card_plugin`
+  (`CARD_FACE_COLOUR`, `RED_SUIT_COLOUR`, `BLACK_SUIT_COLOUR`,
+  `CARD_FACE_COLOUR_RED_CBM`, `card_back_colour` palette) are
+  intentionally unmigrated and should swap in lockstep with the
+  artwork. Largest visible payoff remaining in the visual-
+  identity arc.
+- **Splash boot-loader richness.** The mockup
+  (`docs/ui-mockups/splash-mobile.html`) calls for a scanline
+  overlay, ✓ lime check log lines, pulsing cursor, ROOT@SOLITAIRE
+  prompt, and a loading bar — none of which v0.20.0's
+  cursor-glyph-only port pulled in. Aesthetic feature, its own
+  commit.
+- **Replay-overlay redesign.** The mockup
+  (`docs/ui-mockups/replay-overlay-mobile.html`) envisions a
+  much richer surface (terminal `▌replay.tsx` header, move log
+  scroll, MOVE 47/87 chip, WIN MOVE callout, status bar) versus
+  the current top banner. Aesthetic feature.
+- **Toast Warning / Error variants.** The new `ToastVariant`
+  enum has slots for `Warning` (gold) and `Error` (pink) but no
+  in-engine event uses them yet (the four current toast events
+  all map to Info or Celebration). Wire when a warning- or
+  error-flavoured toast event materialises.
+
+### Carried forward from v0.19.0
+
+- **App icon round.** `Window::icon` not yet wired; no
+  `.icns` / `.ico` / Linux hicolor PNG hierarchy. The 11-size
+  icon export the v0.19 handoff referenced is *not* currently
+  in `artwork/` (current `artwork/` holds the reverted Rusty
+  Pixel card PNGs and is intentionally untracked); icon-export
+  needs to be re-run before this item can be picked up.
+  Half-day task once the PNGs are back in place. No cert
+  dependency.
+
+### Other small candidates
+
+- **Prev/Next selector chips spawn site.** v0.19.0's `9b065e5`
+  noted Prev/Next markers exist in `stats_plugin` but no spawn
+  site renders them today — the Shareable badge therefore lands
+  on the single-replay caption. If/when Prev/Next is plumbed,
+  the badge will need to follow.
+- **Toast queue / immediate unification.** The two toast paths
+  (`spawn_queued_toast` for `InfoToastEvent` queue; `spawn_toast`
+  for fire-and-forget) now share visual treatment but remain
+  separate functions because they serve different temporal
+  needs (sequential vs. parallel). If overlap becomes a UX
+  issue, merge into one queue with priority lanes.
+
+### Process notes
+
+- **Token-port pattern.** v0.20.0's chrome-migration commits
+  set a reusable shape for "centralized design system applied
+  across N plugins":
+  1. Constants module (`ui_theme.rs`) is the source of truth.
+  2. Const sites that can't call `Alpha::with_alpha` (not yet
+     `const` on stable) use a literal RGB matching the token,
+     with a unit test pinning the RGB to the token (e.g.
+     `MARKER_VALID`, `HINT_PILE_HIGHLIGHT_COLOUR`,
+     `RIGHT_CLICK_HIGHLIGHT_COLOUR`).
+  3. Cross-plugin duplication (e.g. `MARKER_DEFAULT` ↔
+     `PILE_MARKER_DEFAULT_COLOUR`) collapses to a single
+     promoted const re-exported from one plugin and imported
+     by the other — replaces "kept in sync" doc comments with a
+     compile-time invariant.
+  4. Domain colours (suit pips, card faces, lerp helpers) stay
+     as literals with a comment naming the rationale; only UI
+     chrome routes through tokens.
+- **Audit before migrating wide.** Before touching any plugin,
+  grep for the literal pattern (`Color::srgb\(|Color::srgba\(|
+  Color::WHITE|Color::BLACK`) and classify each hit as domain
+  vs. chrome. Most plugins after the modal scaffold port turned
+  out to be 100 % token-correct already; the audit prevents
+  wasted churn.
 
 ### Canonical remote
 
 `github.com/funman300/Rusty_Solitaire` is the canonical repo.
 Always push there.
 
-## v0.19.0 (2026-05-06)
+### Design direction (now Terminal — base16-eighties)
 
-| Area | Commits | What landed |
+- **Tone:** retro-terminal / synthwave — flat depth (no box-shadows),
-|---|---|---|
+  monospaced-forward typography (JetBrains Mono / FiraMono), tight
-| Async H-key hint | `3e11e9e` | New `pending_hint.rs` module: `PendingHintTask` resource, `poll_pending_hint_task` + `drop_pending_hint_on_state_change` systems, cancel-on-replace, stale-state guard via `move_count_at_spawn`. Removes the last synchronous solver hot path. |
+  16 px edge margins, 8 px card radius.
-| Persistent share URLs | `42d90b1` | `Replay.share_url: Option<String>` with `#[serde(default)]`. `poll_replay_upload_result` writes into `replays[0].share_url` + persists. Stats Copy button reads from selected replay. `LastSharedReplayUrl` deleted. |
+- **Palette:** near-black surface ramp (`#151515` / `#202020` / `#2a2a2a`
-| Auto-save flake fix | `91b7605` | `test_app` clears `PendingRestoredGame(None)` after plugin build; test re-arms the timer in a bounded loop. No production-code change. |
+  / `#353535`), cyan primary CTA (`#6fc2ef`), lime success
-| Wayland support | `b57db01` | Adds `wayland` to Bevy features. winit prefers Wayland when `WAYLAND_DISPLAY` is set, falls back to X11. Native Wayland surface instead of XWayland frame. |
+  (`#acc267`), gold warning (`#ddb26f`), pink error / suit-red
-| Smart default window size | `b57db01` | New `apply_smart_default_window_size` Update system queries `PrimaryMonitor` and resizes the window to ~70 % of monitor's logical size on the first frame. Skipped when saved geometry was applied. |
+  (`#fb9fb1`), lavender celebration (`#e1a3ee`), teal info
-| Win-celebration cleanup | `55c235b` | Drops the duplicate "You Win" toast that rendered behind the WinSummary modal. Cards-fly-off cascade kept; toast removed. |
+  (`#12cfc0`).
-| Double-click reject animation | `d7ffb16` | Single-card double-clicks with no destination now play the same shake + sound as multi-card stack misses. Both priorities' failure paths converge on one `MoveRejectedEvent` write. |
+- **Two-color suits.** Red = `#fb9fb1`, black = `#d0d0d0`. Outlined
-| Double-click animation dedup | `6037596` | Drops the redundant `StateChangedEvent` write in `end_drag`'s uncommitted-drag branch; previously raced an in-flight CardAnim and restarted the slide visibly. |
+  glyphs for diamonds & clubs are *always on*; the Settings
+  "color-blind mode" toggle only swaps red → cyan.
 
-## Open punch list
+(Was: Midnight Purple base + Balatro yellow primary + warm magenta.
-
+Replaced this cycle.)
-### Carried forward
-
-- **Desktop packaging** per `ARCHITECTURE.md §17`. Eleven icon
-  PNG sizes (16, 24, 32, 48, 64, 96, 128, 192, 256, 512, 1024)
-  exported via `artwork/Icon Export.html` sit in `artwork/`
-  pending wiring. Pending: actual Bevy window-icon hookup,
-  macOS `.icns` assembly via `iconutil`, Windows `.ico` via
-  `magick convert`, Linux hicolor PNG hierarchy install,
-  AppImage recipe, macOS notarisation cert, Windows
-  Authenticode cert.
-
-### Possible next-round candidates
-
-- **App icon round** — wire the icon into the Bevy window via
-  `Window::icon`, generate `.icns` and `.ico` from the existing
-  PNGs. Half-day task; doesn't depend on signing certs.
-- **`pull_failure_sets_error_status` flake fix** — same pattern
-  as the auto-save flake. Wall-clock-bounded loop instead of
-  fixed 5-update budget. ~10 lines.
-- **Settings UI for "open at this size on launch"** — once the
-  smart-default-size system is shipping, expose a checkbox to
-  *disable* it (player who specifically wants 1280×800 every
-  time). Trivial.
-- **Persistent share link URL on selector caption** — surface
-  whether the currently-selected replay has a `share_url`
-  populated (e.g. "Replay 3 / 8 \u{2022} Shareable") so players
-  know which entries the Copy button can copy.
-
-### Process notes (from this round)
-
-- **Async port template (worked again):** the H-key port
-  followed `d489e7a`'s `PendingNewGameSeed` shape one-to-one
-  and the second async port required no new infrastructure.
-  Future async ports (e.g. moving `try_solve_with_first_move`'s
-  full-search variant, if it ever surfaces in the picker UI)
-  should follow the same shape.
-- **Rusty Pixel reverted cleanly:** `git revert` of three
-  contiguous feature commits produced a clean three-revert
-  sequence with no manual conflict resolution. Bisect remains
-  fast over the full v0.19.0 history because the reverts are
-  individual commits, not a squash.
-- **Defensive event writes pattern:** the
-  `auto_save_writes_after_30_seconds` flake AND the
-  `end_drag` double-animation bug shared a root cause:
-  defensive `MessageWriter` writes that originally covered an
-  edge case which no longer holds, but became load-bearing
-  once another system started paying attention to the event.
-  Worth a periodic pass: any event write that doesn't
-  correspond to a real state change is a candidate for
-  removal.
 
 ## Resume prompt
 
 ```
 You are a senior Rust + Bevy developer working on Solitaire Quest.
 Working directory: <Rusty_Solitaire clone path on this machine>.
-Branch: master. v0.19.0 just shipped. The next natural item is
+Branch: master. v0.20.0 just cut on 2026-05-07; CHANGELOG's new
-desktop-packaging follow-through, starting with the app icon.
+[Unreleased] section is empty pending the next cycle's threads.
 
-State: HEAD at 6037596 + the v0.19.0 docs commit on top (this
+State: HEAD on the v0.20.0 docs commit. Tag not pushed yet — last
-session). Tag v0.19.0 points at the docs commit.
+pushed tag is v0.19.0. Working tree clean apart from the
+intentionally-untracked `artwork/`.
 
 READ FIRST (in order, before doing anything):
   1. SESSION_HANDOFF.md  — this file
-  2. CHANGELOG.md        — [Unreleased] is empty; [0.19.0] just landed
+  2. CHANGELOG.md        — [0.20.0] section is the most recent cut
   3. CLAUDE.md           — unified-3.0 rule set
   4. CLAUDE_SPEC.md      — formal architecture spec
   5. ARCHITECTURE.md     — crate responsibilities + data flow
-  6. ~/.claude/projects/<this-project>/memory/MEMORY.md
+  6. docs/ui-mockups/    — design system + 24-mockup library
+                           (Terminal aesthetic — landed in fa7f98a)
+  7. docs/android/*      — Android setup + build runbook
+  8. ~/.claude/projects/<this-project>/memory/MEMORY.md
                          — saved feedback / project context
                            (machine-local; may be missing on a
                            fresh machine)
 
 DECISION TO ASK THE PLAYER FIRST:
-  A. App icon — wire artwork/icon-{size}.png into Bevy's
+  A. Push v0.20.0 tag — `git tag v0.20.0 && git push --tags`. If
-     Window::icon, generate .icns + .ico, drop into Linux
+     the player wants the cut formalised before any new work.
-     hicolor hierarchy. Half-day task. No cert dependency.
+  B. APK launch verification — `adb install` + `adb logcat` on
-  B. Desktop packaging continued — AppImage recipe, .desktop
+     bevy_test AVD or an x86_64 device. Now that persistence is
-     file, install scripts. Larger task; unlocks distro
+     wired (4b51e50), shake out remaining runtime bugs.
-     packaging. No cert dependency.
+  C. Card-face artwork regeneration — generate Terminal-aesthetic
-  C. macOS / Windows signing cert acquisition — needs user
+     card PNGs (dark face, light suit pips), then migrate
-     action; agent can't drive.
+     CARD_FACE_COLOUR / RED_SUIT_COLOUR / BLACK_SUIT_COLOUR /
-  D. `pull_failure_sets_error_status` flake fix — small, well-
+     CARD_FACE_COLOUR_RED_CBM in lockstep. Largest visible
-     scoped. Same pattern as the v0.19.0 auto-save flake fix.
+     payoff remaining in the visual-identity arc.
+  D. Splash boot-loader richness — port the scanline overlay,
+     ✓ check log, pulsing cursor, ROOT@SOLITAIRE prompt, and
+     loading bar from docs/ui-mockups/splash-mobile.html. Pure
+     polish; no behavioural change.
+  E. App icon round — re-run artwork/Icon Export.html (the
+     export PNGs are not currently in `artwork/`), then wire
+     Window::icon + generate .icns / .ico. Half-day task. No
+     cert dependency.
+  F. JNI ClipboardManager / Keystore bridge — replaces the
+     Android stubs for Stats clipboard share + sync auth.
 
 WORKFLOW NOTES:
   - Use the system git config (already correct).
@@ -173,8 +275,8 @@ WORKFLOW NOTES:
     "Quat" not "Rhys" (saved feedback memory).
   - Sub-agents stage + verify only; orchestrator commits.
   - Every commit must pass build / clippy / test before pushing.
-  - Push to GitHub (origin) — gh auth setup-git is already
+  - Push to GitHub (origin) — gh auth setup-git wired on
-    wired on this machine.
+    primary dev box; verify on laptop before first push.
 
-OPEN AT THE START: ask which of A–D. Don't pick unilaterally.
+OPEN AT THE START: ask which of A–F. Don't pick unilaterally.
 ```

docs/ANDROID.md

@@ -0,0 +1,228 @@
+# Android build — developer setup
+
+This doc captures the toolchain install + build invocation for the
+Android target. Steps are runnable on a fresh Debian 13 (trixie) box;
+later sections document what's known to compile, what's stubbed, and
+the next milestones.
+
+> **Status (2026-05-07):** First working APK at `fb8b2ac`. 54 MB
+> debug-signed `solitaire-quest.apk` for `x86_64-linux-android`. Has
+> NOT yet been verified to launch on a device or emulator — that's
+> the next milestone.
+
+---
+
+## 1. Toolchain install (Debian 13 / trixie)
+
+Run as one block. Will pull ~15-20 GB of disk between APT, the SDK,
+the NDK, the system image, and Rust target sysroots. Requires sudo.
+
+```bash
+# 1. JDK 21 (Android tooling needs JDK 17+; Debian 13 default is 21).
+sudo apt update && sudo apt install -y openjdk-21-jdk-headless unzip wget
+
+# 2. SDK directory + Google's cmdline-tools bootstrap.
+export ANDROID_HOME="$HOME/Android/Sdk"
+mkdir -p "$ANDROID_HOME/cmdline-tools"
+wget -O /tmp/cmdline-tools.zip \
+  https://dl.google.com/android/repository/commandlinetools-linux-11076708_latest.zip
+unzip -q /tmp/cmdline-tools.zip -d "$ANDROID_HOME/cmdline-tools"
+mv "$ANDROID_HOME/cmdline-tools/cmdline-tools" "$ANDROID_HOME/cmdline-tools/latest"
+rm /tmp/cmdline-tools.zip
+
+# 3. Persist env vars.
+{
+  echo ''
+  echo '# Android dev'
+  echo 'export ANDROID_HOME="$HOME/Android/Sdk"'
+  echo 'export ANDROID_NDK_HOME="$ANDROID_HOME/ndk/26.3.11579264"'
+  echo 'export JAVA_HOME="$(dirname $(dirname $(readlink -f $(which java))))"'
+  echo 'export PATH="$PATH:$ANDROID_HOME/cmdline-tools/latest/bin:$ANDROID_HOME/platform-tools:$ANDROID_HOME/emulator"'
+} >> ~/.bashrc
+source ~/.bashrc
+
+# 4. Accept SDK licences (interactive prompts answered by `yes |`).
+yes | sdkmanager --licenses
+
+# 5. Platform packages — ~5 GB.
+sdkmanager \
+  "platform-tools" \
+  "platforms;android-34" \
+  "build-tools;34.0.0" \
+  "ndk;26.3.11579264" \
+  "emulator" \
+  "system-images;android-34;google_apis;x86_64"
+
+# 6. AVD for testing (one-time).
+echo no | avdmanager create avd \
+  -n bevy_test \
+  -k "system-images;android-34;google_apis;x86_64" \
+  -d pixel_7
+
+# 7. Rust cross-compile targets.
+rustup target add \
+  aarch64-linux-android \
+  armv7-linux-androideabi \
+  x86_64-linux-android \
+  i686-linux-android
+
+# 8. cargo-apk.
+cargo install cargo-apk
+```
+
+Sanity:
+
+```bash
+java --version | head -1            # openjdk 21.0.x
+adb --version | head -1             # 35.x or higher
+sdkmanager --list_installed | head  # build-tools, emulator, ndk, platforms, system-images
+avdmanager list avd | head          # bevy_test
+rustup target list --installed | grep android  # 4 targets
+cargo apk --help | head -5
+```
+
+If `sdkmanager --version` errors with `JAVA_HOME is not set`, the env
+section in step 3 didn't apply to your shell — `source ~/.bashrc`
+again or open a new terminal.
+
+### Optional: emulator runtime libs
+
+The Android emulator is dynamically linked against X11/GL/audio. If
+`emulator -list-avds` works but `emulator -avd bevy_test` complains
+about `libX11.so.6`, install:
+
+```bash
+sudo apt install -y \
+  libx11-6 libxcursor1 libxrandr2 libxi6 libxinerama1 libxxf86vm1 \
+  libgl1 libnss3 libpulse0 libxcomposite1
+```
+
+Headless emulator launch:
+
+```bash
+emulator -avd bevy_test -no-window -gpu swiftshader_indirect &
+adb wait-for-device && adb devices
+# Stop later:
+# adb -s emulator-5554 emu kill
+```
+
+Headless + software rendering is fine for "does it boot" smoke tests
+but useless for perf measurement — use a physical Pixel-class device
+over USB for real numbers.
+
+---
+
+## 2. Build the APK
+
+```bash
+cargo apk build -p solitaire_app --target x86_64-linux-android
+```
+
+Output:
+
+```
+target/debug/apk/solitaire-quest.apk
+```
+
+Targets shipped via `[package.metadata.android].build_targets` in
+`solitaire_app/Cargo.toml`:
+
+| Target | Use |
+|--------|-----|
+| `aarch64-linux-android` | Real phones (modern 64-bit ARM) |
+| `armv7-linux-androideabi` | Older 32-bit ARM phones |
+| `x86_64-linux-android` | The `bevy_test` AVD on this dev box |
+
+Build any of them with `--target <triple>`.
+
+### Known cosmetic warning
+
+After the APK is signed cargo-apk panics with:
+
+```
+thread 'main' panicked: Bin is not compatible with Cdylib
+```
+
+This happens AFTER the APK is on disk and signed. cargo-apk is
+trying to also wrap the desktop `[[bin]]` target. The APK is still
+valid. Work around with `--lib`:
+
+```bash
+cargo apk build -p solitaire_app --target x86_64-linux-android --lib
+```
+
+(Permanent fix to come — likely a `[[bin]] required-features = ["desktop"]`
+gate so cargo-apk skips the bin target on Android.)
+
+---
+
+## 3. Install + run
+
+Physical device:
+
+```bash
+adb devices                                    # confirm connection
+adb install target/debug/apk/solitaire-quest.apk
+adb shell am start -n com.solitairequest.app/android.app.NativeActivity
+adb logcat | grep -iE "RustStdoutStderr|solitaire|panic"
+```
+
+Emulator:
+
+```bash
+emulator -avd bevy_test -no-window -gpu swiftshader_indirect &
+adb wait-for-device
+adb install target/debug/apk/solitaire-quest.apk
+# ... same start + logcat steps as above.
+```
+
+If `adb install` errors with `INSTALL_FAILED_NO_MATCHING_ABIS`, the
+emulator is x86_64 but the APK was built for arm — rebuild with the
+`x86_64-linux-android` target, or add an x86_64 system image to the
+AVD.
+
+---
+
+## 4. What's wired vs. what's stubbed
+
+The first build pass (commit `fb8b2ac`) gates four desktop-only
+crates / call sites so the workspace cross-compiles. Each gate is
+documented at its call site.
+
+| Surface | Desktop | Android |
+|---------|---------|---------|
+| Bevy windowing | x11 + wayland | `android-native-activity` (NativeActivity glue) |
+| Clipboard ("Copy share link") | `arboard` writes URL | Toast surfaces the URL inline |
+| OS keychain (JWT tokens) | `keyring` v4 → Secret Service / Keychain / Credential Store | Stub returning `KeychainUnavailable`; sync requires fresh login each launch |
+| App entry point | `bin` target → `solitaire_app::run()` | `cdylib` target loaded by NativeActivity |
+
+What's NOT yet ported / not yet measured:
+
+- `dirs::data_dir()` returns `None` on Android. Callers in
+  `solitaire_data/src/storage.rs`, `progress.rs`, `replay.rs`,
+  `achievements.rs`, `settings.rs` all need an Android-aware
+  helper (likely `/data/data/com.solitairequest.app/files`).
+- Touch UX pass — hit-target sizes, modal scaling on small screens,
+  app lifecycle (suspend / resume), font scaling.
+- Android Keystore via JNI for `auth_tokens`.
+- JNI ClipboardManager for share links.
+- Google Play Games sign-in (the `solitaire_gpgs` crate referenced
+  in older docs doesn't yet exist).
+
+---
+
+## 5. Iteration loop
+
+```bash
+# Edit code…
+cargo build -p solitaire_app                           # desktop sanity
+cargo clippy --workspace --all-targets -- -D warnings  # gate
+cargo test --workspace                                 # gate
+cargo apk build -p solitaire_app --target x86_64-linux-android --lib
+adb install -r target/debug/apk/solitaire-quest.apk    # `-r` reinstalls
+adb logcat -c && adb shell am start -n com.solitairequest.app/android.app.NativeActivity
+adb logcat | grep -iE "RustStdoutStderr|solitaire"
+```
+
+`adb logcat` is the canonical way to see Bevy / Rust panic output —
+they end up in the `RustStdoutStderr` tag.

docs/ui-mockups/achievements-mobile.html

@@ -0,0 +1,293 @@
+<!DOCTYPE html>
+
+<html class="dark" lang="en"><head>
+<meta charset="utf-8"/>
+<meta content="width=device-width, initial-scale=1.0" name="viewport"/>
+<title>Rusty Solitaire - Achievements</title>
+<script src="https://cdn.tailwindcss.com?plugins=forms,container-queries"></script>
+<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700;800&amp;family=Inter:wght@400;500;700&amp;family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<script id="tailwind-config">
+        tailwind.config = {
+            darkMode: "class",
+            theme: {
+                extend: {
+                    "colors": {
+                        "tertiary-fixed": "#fbd7ff",
+                        "on-tertiary-container": "#683476",
+                        "surface-container-lowest": "#0b0f11",
+                        "error": "#fb9fb1",
+                        "secondary-fixed-dim": "#bad073",
+                        "on-primary-fixed-variant": "#004c69",
+                        "background": "#101417",
+                        "error-container": "#93000a",
+                        "tertiary-container": "#e1a3ee",
+                        "inverse-primary": "#00668a",
+                        "highlight-valid": "#acc267",
+                        "suit-red": "#fb9fb1",
+                        "on-surface-variant": "#bfc8cf",
+                        "on-secondary": "#293500",
+                        "on-primary-container": "#004f6c",
+                        "surface-tint": "#7ed0fe",
+                        "on-surface": "#e0e3e6",
+                        "outline-variant": "#3f484e",
+                        "on-background": "#e0e3e6",
+                        "primary-fixed": "#c4e7ff",
+                        "inverse-surface": "#e0e3e6",
+                        "info": "#12cfc0",
+                        "inverse-on-surface": "#2d3134",
+                        "warning": "#ddb26f",
+                        "on-tertiary-fixed-variant": "#653173",
+                        "on-secondary-container": "#b2c86d",
+                        "on-secondary-fixed-variant": "#3c4d00",
+                        "highlight-celebration": "#e1a3ee",
+                        "surface": "#151515",
+                        "surface-container-highest": "#313538",
+                        "outline": "#505050",
+                        "on-primary": "#003549",
+                        "on-error-container": "#ffdad6",
+                        "surface-variant": "#313538",
+                        "on-error": "#690005",
+                        "suit-black": "#d0d0d0",
+                        "primary": "#a1dcff",
+                        "suit-red-cb": "#6fc2ef",
+                        "surface-bright": "#363a3d",
+                        "on-tertiary": "#4c195b",
+                        "surface-dim": "#101417",
+                        "primary-container": "#6fc2ef",
+                        "tertiary": "#f7c3ff",
+                        "primary-fixed-dim": "#7ed0fe",
+                        "surface-container-high": "#272a2d",
+                        "on-secondary-fixed": "#161e00",
+                        "surface-container": "#1c2023",
+                        "tertiary-fixed-dim": "#f0b0fc",
+                        "secondary-fixed": "#d5ec8c",
+                        "secondary-container": "#435401",
+                        "on-tertiary-fixed": "#340043",
+                        "on-primary-fixed": "#001e2c",
+                        "secondary": "#bad073",
+                        "surface-container-low": "#181c1f"
+                    },
+                    "borderRadius": {
+                        "DEFAULT": "0.125rem",
+                        "lg": "0.25rem",
+                        "xl": "0.5rem",
+                        "full": "0.75rem"
+                    },
+                    "spacing": {
+                        "stack-overlap": "2rem",
+                        "gutter-card": "0.375rem",
+                        "touch-target-min": "48dp",
+                        "margin-edge": "1rem",
+                        "action-bar-height": "64px"
+                    },
+                    "fontFamily": {
+                        "card-rank": ["JetBrains Mono"],
+                        "body-md": ["Inter"],
+                        "label-caps": ["JetBrains Mono"],
+                        "hud-score": ["JetBrains Mono"],
+                        "headline": ["JetBrains Mono"],
+                        "hud-timer": ["JetBrains Mono"]
+                    },
+                    "fontSize": {
+                        "card-rank": ["18px", {"lineHeight": "18px", "fontWeight": "700"}],
+                        "body-md": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+                        "label-caps": ["12px", {"lineHeight": "16px", "letterSpacing": "0.08em", "fontWeight": "500"}],
+                        "hud-score": ["24px", {"lineHeight": "32px", "letterSpacing": "-0.02em", "fontWeight": "700"}],
+                        "headline": ["28px", {"lineHeight": "32px", "letterSpacing": "-0.01em", "fontWeight": "700"}],
+                        "hud-timer": ["16px", {"lineHeight": "24px", "fontWeight": "400"}]
+                    }
+                },
+            },
+        }
+    </script>
+<style>
+        .material-symbols-outlined {
+            font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
+        }
+        body {
+            background-color: #151515;
+            color: #e0e3e6;
+            -webkit-font-smoothing: antialiased;
+        }
+        .scanline {
+            background: linear-gradient(to bottom, transparent 50%, rgba(0,0,0,0.1) 50%);
+            background-size: 100% 2px;
+            pointer-events: none;
+        }
+    </style>
+<style>
+    body {
+      min-height: max(884px, 100dvh);
+    }
+  </style>
+  </head>
+<body class="font-body-md text-body-md overflow-x-hidden pb-[action-bar-height]">
+<!-- Status Bar -->
+<header class="fixed top-0 w-full h-[32px] bg-[#202020] flex items-center justify-between px-margin-edge z-[60] border-b border-outline-variant">
+<div class="flex items-center gap-2 font-label-caps text-on-surface">
+<span class="text-primary">▌</span>achievements.json
+        </div>
+<div class="font-label-caps text-[#a0a0a0]">
+            8/19 UNLOCKED
+        </div>
+</header>
+<!-- Top App Bar (Shared Component Reference) -->
+<nav class="fixed top-[32px] w-full h-[64px] bg-surface flex items-center justify-between px-margin-edge z-50 border-b border-outline-variant">
+<div class="flex items-center gap-3">
+<span class="material-symbols-outlined text-primary" data-icon="terminal">terminal</span>
+<h1 class="font-headline text-[20px] text-primary uppercase tracking-widest">Rusty Solitaire</h1>
+</div>
+<button class="w-10 h-10 flex items-center justify-center hover:bg-surface-container-highest transition-colors">
+<span class="material-symbols-outlined text-on-surface-variant" data-icon="settings">settings</span>
+</button>
+</nav>
+<main class="mt-[112px] px-margin-edge">
+<!-- Hero Progress Card -->
+<section class="w-full h-[100px] bg-[#202020] border border-[#353535] rounded-lg p-4 mb-6">
+<div class="flex flex-col justify-between h-full">
+<span class="font-label-caps text-[10px] text-[#a0a0a0]">PROGRESS</span>
+<div class="flex items-baseline gap-2">
+<span class="font-headline text-[28px] font-bold text-[#d0d0d0]">8/19</span>
+<span class="font-label-caps text-[14px] text-highlight-celebration">(42%)</span>
+</div>
+<div class="w-full h-[4px] bg-[#353535] rounded-full overflow-hidden mt-1">
+<div class="h-full bg-highlight-celebration" style="width: 42%;"></div>
+</div>
+</div>
+</section>
+<!-- Filter Chip Row -->
+<section class="flex gap-2 mb-6 overflow-x-auto no-scrollbar">
+<button class="h-[32px] px-3 flex items-center justify-center border border-[#6fc2ef] text-[#6fc2ef] rounded-[4px] font-label-caps text-[11px]">
+                [ ALL ]
+            </button>
+<button class="h-[32px] px-3 flex items-center justify-center border border-outline text-[#a0a0a0] rounded-[4px] font-label-caps text-[11px] hover:border-primary hover:text-primary transition-colors">
+                UNLOCKED
+            </button>
+<button class="h-[32px] px-3 flex items-center justify-center border border-outline text-[#a0a0a0] rounded-[4px] font-label-caps text-[11px] hover:border-primary hover:text-primary transition-colors">
+                LOCKED
+            </button>
+<button class="h-[32px] px-3 flex items-center justify-center border border-outline text-[#a0a0a0] rounded-[4px] font-label-caps text-[11px] hover:border-primary hover:text-primary transition-colors">
+                SECRET
+            </button>
+</section>
+<!-- Achievements Grid -->
+<section class="grid grid-cols-2 gap-3 mb-10">
+<!-- FIRST WIN -->
+<div class="h-[100px] bg-[#202020] border border-[#353535] p-3 flex flex-col justify-between rounded-sm">
+<div class="w-8 h-8 rounded-full bg-[#6fc2ef] flex items-center justify-center">
+<span class="material-symbols-outlined text-[#151515] text-[20px]" data-icon="emoji_events" style="font-variation-settings: 'FILL' 1;">emoji_events</span>
+</div>
+<div>
+<h3 class="font-label-caps text-[13px] font-bold text-[#d0d0d0] leading-none mb-1">FIRST WIN</h3>
+<p class="font-label-caps text-[10px] text-[#a0a0a0] leading-tight">Win your first game</p>
+</div>
+</div>
+<!-- SPEED DEMON -->
+<div class="h-[100px] bg-[#202020] border border-highlight-celebration p-3 flex flex-col justify-between rounded-sm relative">
+<div class="absolute inset-0 border border-highlight-celebration opacity-20 pointer-events-none"></div>
+<div class="w-8 h-8 rounded-full bg-[#6fc2ef] flex items-center justify-center">
+<span class="material-symbols-outlined text-[#151515] text-[20px]" data-icon="speed" style="font-variation-settings: 'FILL' 1;">speed</span>
+</div>
+<div>
+<h3 class="font-label-caps text-[13px] font-bold text-[#d0d0d0] leading-none mb-1">SPEED DEMON</h3>
+<p class="font-label-caps text-[10px] text-[#a0a0a0] leading-tight">Win in under 3:00</p>
+</div>
+</div>
+<!-- STREAK 10 -->
+<div class="h-[100px] bg-[#202020] border border-[#353535] p-3 flex flex-col justify-between rounded-sm">
+<div class="w-8 h-8 rounded-full bg-[#6fc2ef] flex items-center justify-center">
+<span class="material-symbols-outlined text-[#151515] text-[20px]" data-icon="bolt" style="font-variation-settings: 'FILL' 1;">bolt</span>
+</div>
+<div>
+<h3 class="font-label-caps text-[13px] font-bold text-[#d0d0d0] leading-none mb-1">STREAK 10</h3>
+<p class="font-label-caps text-[10px] text-[#a0a0a0] leading-tight">10 wins in a row</p>
+</div>
+</div>
+<!-- DAILY DEFENDER -->
+<div class="h-[100px] bg-[#202020] border border-[#353535] p-3 flex flex-col justify-between rounded-sm">
+<div class="w-8 h-8 rounded-full bg-[#6fc2ef] flex items-center justify-center">
+<span class="material-symbols-outlined text-[#151515] text-[20px]" data-icon="calendar_today" style="font-variation-settings: 'FILL' 1;">calendar_today</span>
+</div>
+<div>
+<h3 class="font-label-caps text-[13px] font-bold text-[#d0d0d0] leading-none mb-1">DAILY DEFENDER</h3>
+<p class="font-label-caps text-[10px] text-[#a0a0a0] leading-tight">Complete 7 daily seeds</p>
+</div>
+</div>
+<!-- PERFECTIONIST (LOCKED) -->
+<div class="h-[100px] bg-[#0d0d0d] border border-[#353535] p-3 flex flex-col justify-between rounded-sm opacity-80">
+<div class="w-8 h-8 rounded-full border border-[#505050] flex items-center justify-center">
+<span class="material-symbols-outlined text-[#505050] text-[20px]" data-icon="undo">undo</span>
+</div>
+<div>
+<h3 class="font-label-caps text-[13px] font-bold text-[#505050] leading-none mb-1">PERFECTIONIST</h3>
+<p class="font-label-caps text-[10px] text-[#353535] leading-tight">Win without using undo</p>
+</div>
+</div>
+<!-- CHALLENGE BEATEN (LOCKED) -->
+<div class="h-[100px] bg-[#0d0d0d] border border-[#353535] p-3 flex flex-col justify-between rounded-sm opacity-80">
+<div class="w-8 h-8 rounded-full border border-[#505050] flex items-center justify-center">
+<span class="material-symbols-outlined text-[#505050] text-[20px]" data-icon="military_tech">military_tech</span>
+</div>
+<div>
+<h3 class="font-label-caps text-[13px] font-bold text-[#505050] leading-none mb-1">CHALLENGE BEATEN</h3>
+<p class="font-label-caps text-[10px] text-[#353535] leading-tight">Complete CHALLENGE mode</p>
+</div>
+</div>
+<!-- SECRET (LOCKED) -->
+<div class="h-[100px] bg-[#0d0d0d] border border-[#353535] p-3 flex flex-col justify-between rounded-sm opacity-80">
+<div class="w-8 h-8 rounded-full border border-[#505050] flex items-center justify-center">
+<span class="material-symbols-outlined text-[#505050] text-[20px]" data-icon="help_outline">help_outline</span>
+</div>
+<div>
+<h3 class="font-label-caps text-[13px] font-bold text-[#505050] leading-none mb-1">????</h3>
+<p class="font-label-caps text-[10px] text-[#353535] leading-tight">SECRET · Hidden until unlocked</p>
+</div>
+</div>
+<!-- PAR HUNTER (LOCKED) -->
+<div class="h-[100px] bg-[#0d0d0d] border border-[#353535] p-3 flex flex-col justify-between rounded-sm opacity-80">
+<div class="w-8 h-8 rounded-full border border-[#505050] flex items-center justify-center">
+<span class="material-symbols-outlined text-[#505050] text-[20px]" data-icon="golf_course">golf_course</span>
+</div>
+<div>
+<h3 class="font-label-caps text-[13px] font-bold text-[#505050] leading-none mb-1">PAR HUNTER</h3>
+<p class="font-label-caps text-[10px] text-[#353535] leading-tight">Beat par on 50 games</p>
+</div>
+</div>
+</section>
+</main>
+<!-- Footer Status -->
+<footer class="fixed bottom-[action-bar-height] w-full h-[24px] bg-background border-t border-outline-variant flex items-center justify-between px-margin-edge z-40 text-[10px] font-label-caps">
+<div class="flex items-center">
+<span class="text-primary mr-1">▌</span>
+<span class="text-on-surface-variant">NORMAL</span>
+<span class="mx-2 text-outline">│</span>
+<span class="text-on-surface-variant">achievements</span>
+</div>
+<div class="flex gap-3">
+<div><span class="text-[#a0a0a0]">[F]</span> <span class="text-[#505050]">filter</span></div>
+<div><span class="text-[#a0a0a0]">[/]</span> <span class="text-[#505050]">search</span></div>
+</div>
+</footer>
+<!-- Bottom Navigation Bar (Shared Component Reference) -->
+<nav class="fixed bottom-0 w-full h-action-bar-height bg-surface-container flex justify-around items-center px-margin-edge z-50 border-t border-outline-variant">
+<button class="flex flex-col items-center justify-center text-on-surface-variant p-2 hover:text-primary hover:bg-surface-container-highest transition-colors active:scale-95">
+<span class="material-symbols-outlined" data-icon="power_settings_new">power_settings_new</span>
+<span class="font-label-caps text-[10px] mt-1">[Q] QUIT</span>
+</button>
+<button class="flex flex-col items-center justify-center text-on-surface-variant p-2 hover:text-primary hover:bg-surface-container-highest transition-colors active:scale-95">
+<span class="material-symbols-outlined" data-icon="add_box">add_box</span>
+<span class="font-label-caps text-[10px] mt-1">[N] NEW</span>
+</button>
+<button class="flex flex-col items-center justify-center text-on-surface-variant p-2 hover:text-primary hover:bg-surface-container-highest transition-colors active:scale-95">
+<span class="material-symbols-outlined" data-icon="undo">undo</span>
+<span class="font-label-caps text-[10px] mt-1">[U] UNDO</span>
+</button>
+<button class="flex flex-col items-center justify-center text-on-surface-variant p-2 hover:text-primary hover:bg-surface-container-highest transition-colors active:scale-95">
+<span class="material-symbols-outlined" data-icon="lightbulb">lightbulb</span>
+<span class="font-label-caps text-[10px] mt-1">[H] HINT</span>
+</button>
+</nav>
+<!-- CRT Overlay Effect (Visual Decoration) -->
+<div class="fixed inset-0 pointer-events-none z-[100] opacity-[0.03] scanline"></div>
+</body></html>

docs/ui-mockups/challenge-mode-mobile.html

@@ -0,0 +1,219 @@
+<!DOCTYPE html>
+
+<html class="dark" lang="en"><head>
+<meta charset="utf-8"/>
+<meta content="width=390, height=844, initial-scale=1.0" name="viewport"/>
+<title>Challenge Mode Menu</title>
+<script src="https://cdn.tailwindcss.com?plugins=forms,container-queries"></script>
+<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&amp;family=Inter:wght@400;500;700&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<script id="tailwind-config">
+        tailwind.config = {
+            darkMode: "class",
+            theme: {
+                extend: {
+                    "colors": {
+                        "inverse-surface": "#e0e3e6",
+                        "error-container": "#93000a",
+                        "tertiary": "#f7c3ff",
+                        "on-primary-container": "#004f6c",
+                        "on-surface": "#e0e3e6",
+                        "surface-dim": "#101417",
+                        "surface-container-high": "#272a2d",
+                        "surface-container-lowest": "#0b0f11",
+                        "secondary-container": "#435401",
+                        "suit-red": "#fb9fb1",
+                        "on-error": "#690005",
+                        "surface-container-low": "#181c1f",
+                        "surface-variant": "#313538",
+                        "surface-tint": "#7ed0fe",
+                        "primary-container": "#6fc2ef",
+                        "background": "#101417",
+                        "primary": "#a1dcff",
+                        "outline": "#505050",
+                        "suit-black": "#d0d0d0",
+                        "secondary-fixed": "#d5ec8c",
+                        "surface-container": "#202020",
+                        "on-tertiary-fixed": "#340043",
+                        "on-tertiary-fixed-variant": "#653173",
+                        "outline-variant": "#3f484e",
+                        "on-surface-variant": "#bfc8cf",
+                        "error": "#fb9fb1",
+                        "on-primary-fixed": "#001e2c",
+                        "highlight-celebration": "#e1a3ee",
+                        "highlight-valid": "#acc267",
+                        "suit-red-cb": "#6fc2ef",
+                        "primary-fixed-dim": "#7ed0fe",
+                        "tertiary-fixed-dim": "#f0b0fc",
+                        "primary-fixed": "#c4e7ff",
+                        "on-error-container": "#ffdad6",
+                        "tertiary-container": "#e1a3ee",
+                        "on-secondary": "#293500",
+                        "on-tertiary": "#4c195b",
+                        "on-background": "#e0e3e6",
+                        "secondary-fixed-dim": "#bad073",
+                        "secondary": "#bad073",
+                        "inverse-primary": "#00668a",
+                        "surface-bright": "#363a3d",
+                        "surface": "#151515",
+                        "on-tertiary-container": "#683476",
+                        "on-secondary-fixed": "#161e00",
+                        "inverse-on-surface": "#2d3134",
+                        "warning": "#ddb26f",
+                        "info": "#12cfc0",
+                        "surface-container-highest": "#313538",
+                        "on-primary-fixed-variant": "#004c69",
+                        "tertiary-fixed": "#fbd7ff",
+                        "on-secondary-fixed-variant": "#3c4d00",
+                        "on-secondary-container": "#b2c86d",
+                        "on-primary": "#003549"
+                    },
+                    "fontFamily": {
+                        "mono": ["JetBrains Mono", "monospace"],
+                        "label-caps": ["JetBrains Mono"],
+                        "hud-score": ["JetBrains Mono"],
+                        "body-md": ["Inter"],
+                        "card-rank": ["JetBrains Mono"],
+                        "hud-timer": ["JetBrains Mono"],
+                        "headline": ["JetBrains Mono"]
+                    }
+                }
+            }
+        }
+    </script>
+<style>
+        .material-symbols-outlined {
+            font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
+        }
+        body {
+            background-color: #101417;
+            font-family: 'JetBrains Mono', monospace;
+        }
+        .retro-scanline {
+            background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.1) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.03), rgba(0, 255, 0, 0.01), rgba(0, 0, 255, 0.03));
+            background-size: 100% 2px, 3px 100%;
+            pointer-events: none;
+        }
+    </style>
+<style>
+    body {
+      min-height: max(884px, 100dvh);
+    }
+  </style>
+  </head>
+<body class="flex items-center justify-center min-h-screen text-on-background overflow-hidden">
+<!-- Mobile Container (390x844) -->
+<div class="relative w-[390px] h-[844px] bg-background flex flex-col overflow-hidden border border-outline-variant">
+<!-- Status Bar -->
+<div class="h-[32px] bg-surface-container flex items-center justify-between px-4 text-[11px] font-mono border-b border-outline-variant shrink-0">
+<span class="text-suit-black">▌challenge.tsx</span>
+<span class="text-[#a0a0a0]">LV 12 · UNLOCKED</span>
+</div>
+<!-- Header -->
+<header class="h-[80px] px-margin-edge flex flex-col justify-center border-b border-outline-variant shrink-0">
+<h1 class="text-[24px] font-bold leading-tight text-suit-black">CHALLENGE MODE</h1>
+<p class="text-[12px] text-[#a0a0a0] mt-1">Curated puzzles · Beat par for bonus XP</p>
+</header>
+<!-- Stats Row -->
+<div class="mx-margin-edge mt-4 bg-surface-container rounded-[4px] p-3 flex items-center justify-between border border-outline-variant shrink-0">
+<div class="flex items-baseline gap-1">
+<span class="text-[14px] font-bold text-suit-black">DONE 8/24</span>
+<span class="text-[14px] font-bold text-highlight-celebration">(33%)</span>
+</div>
+<span class="text-outline-variant text-[14px]">│</span>
+<div class="text-[14px] font-bold text-suit-black">BEST AVG 03:42</div>
+<span class="text-outline-variant text-[14px]">│</span>
+<div class="text-[14px] font-bold text-highlight-valid">+1240 XP</div>
+</div>
+<!-- Scrollable List Area -->
+<div class="flex-1 overflow-y-auto px-margin-edge pt-4 space-y-3 pb-6">
+<!-- Card 1 -->
+<div class="h-[80px] bg-surface-container border border-outline rounded-[4px] flex relative overflow-hidden">
+<div class="w-[6px] h-full bg-warning"></div>
+<div class="flex-1 flex items-center justify-between px-4">
+<div class="flex flex-col">
+<span class="text-[14px] font-bold text-suit-black">DEEP STACK</span>
+<span class="text-[12px] text-on-surface-variant">Win with 0 stock · ★★★☆☆</span>
+</div>
+<div class="bg-highlight-valid px-2 py-1 rounded-[2px] text-background text-[11px] font-bold">
+                        ✓ DONE
+                    </div>
+</div>
+</div>
+<!-- Card 2 -->
+<div class="h-[80px] bg-surface-container border border-primary rounded-[4px] flex relative overflow-hidden">
+<div class="w-[6px] h-full bg-highlight-valid"></div>
+<div class="flex-1 flex items-center justify-between px-4">
+<div class="flex flex-col">
+<span class="text-[14px] font-bold text-suit-black">SPEED RUN</span>
+<span class="text-[12px] text-on-surface-variant">Win under 2:30 · ★★☆☆☆</span>
+</div>
+<div class="bg-primary px-2 py-1 rounded-[2px] text-background text-[11px] font-bold">
+                        ▶ ACTIVE
+                    </div>
+</div>
+</div>
+<!-- Card 3 -->
+<div class="h-[80px] bg-surface-container border border-outline rounded-[4px] flex relative overflow-hidden">
+<div class="w-[6px] h-full bg-suit-red"></div>
+<div class="flex-1 flex items-center justify-between px-4">
+<div class="flex flex-col">
+<span class="text-[14px] font-bold text-suit-black">NO UNDO</span>
+<span class="text-[12px] text-on-surface-variant">Win without undo · ★★★★☆</span>
+</div>
+<div class="bg-primary px-2 py-1 rounded-[2px] text-background text-[11px] font-bold">
+                        ▶ ACTIVE
+                    </div>
+</div>
+</div>
+<!-- Card 4 -->
+<div class="h-[80px] bg-surface-container border border-outline rounded-[4px] flex relative overflow-hidden">
+<div class="w-[6px] h-full bg-info"></div>
+<div class="flex-1 flex items-center justify-between px-4">
+<div class="flex flex-col">
+<span class="text-[14px] font-bold text-suit-black">FOUR SUITS</span>
+<span class="text-[12px] text-on-surface-variant">1 card per suit · ★☆☆☆☆</span>
+</div>
+<div class="bg-highlight-valid px-2 py-1 rounded-[2px] text-background text-[11px] font-bold">
+                        ✓ DONE
+                    </div>
+</div>
+</div>
+<!-- Card 5 (Locked) -->
+<div class="h-[80px] bg-surface-container border border-outline-variant rounded-[4px] flex relative overflow-hidden opacity-60">
+<div class="w-[6px] h-full bg-highlight-celebration"></div>
+<div class="flex-1 flex items-center justify-between px-4">
+<div class="flex flex-col">
+<span class="text-[14px] font-bold text-suit-black">PERFECT RUN</span>
+<span class="text-[12px] text-on-surface-variant">Below par moves · ★★★★★</span>
+</div>
+<div class="bg-outline px-2 py-1 rounded-[2px] text-on-surface text-[11px] font-bold">
+                        🔒 LOCKED
+                    </div>
+</div>
+</div>
+<!-- Filler Graphic for retro feel -->
+<div class="flex items-center justify-center py-4">
+<div class="h-[1px] flex-1 bg-outline-variant"></div>
+<span class="px-4 text-[10px] text-outline text-label-caps">END OF LIST</span>
+<div class="h-[1px] flex-1 bg-outline-variant"></div>
+</div>
+</div>
+<!-- Shared Component: Terminal Context (Used as Footer) -->
+<div class="h-[24px] bg-surface px-4 flex items-center justify-between text-[10px] font-mono border-t border-outline-variant shrink-0">
+<div class="flex items-center gap-2">
+<span class="text-primary">▌ NORMAL</span>
+<span class="text-outline">│</span>
+<span class="text-on-surface-variant uppercase tracking-widest">challenge</span>
+</div>
+<div class="text-[#a0a0a0] flex items-center gap-3">
+<span>[ENTER] select</span>
+<span>[F] filter</span>
+<span class="text-suit-red">[ESC] back</span>
+</div>
+</div>
+<!-- Retro Scanline Overlay -->
+<div class="absolute inset-0 retro-scanline z-50"></div>
+</div>
+</body></html>

docs/ui-mockups/daily-challenge-mobile.html

@@ -0,0 +1,258 @@
+<!DOCTYPE html>
+
+<html class="dark" lang="en"><head>
+<meta charset="utf-8"/>
+<meta content="width=390, height=844, initial-scale=1.0" name="viewport"/>
+<title>Rusty Solitaire - Daily Challenge</title>
+<script src="https://cdn.tailwindcss.com?plugins=forms,container-queries"></script>
+<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700;800&amp;family=Inter:wght@400;500;600&amp;family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<style>
+        .material-symbols-outlined {
+            font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
+        }
+        body {
+            background-color: #101417;
+            color: #e0e3e6;
+            font-family: 'Inter', sans-serif;
+            -webkit-font-smoothing: antialiased;
+        }
+        .scanline-bg {
+            background: linear-gradient(to bottom, transparent 50%, rgba(26, 26, 26, 0.5) 50%);
+            background-size: 100% 4px;
+        }
+    </style>
+<script id="tailwind-config">
+        tailwind.config = {
+            darkMode: "class",
+            theme: {
+                extend: {
+                    "colors": {
+                        "on-secondary-fixed": "#161e00",
+                        "on-error": "#690005",
+                        "on-primary-fixed": "#001e2c",
+                        "tertiary": "#f7c3ff",
+                        "secondary-fixed-dim": "#bad073",
+                        "primary-container": "#6fc2ef",
+                        "surface-dim": "#101417",
+                        "surface-variant": "#313538",
+                        "on-error-container": "#ffdad6",
+                        "warning": "#ddb26f",
+                        "on-surface": "#e0e3e6",
+                        "inverse-on-surface": "#2d3134",
+                        "surface-tint": "#7ed0fe",
+                        "error-container": "#93000a",
+                        "on-tertiary": "#4c195b",
+                        "info": "#12cfc0",
+                        "tertiary-fixed": "#fbd7ff",
+                        "tertiary-fixed-dim": "#f0b0fc",
+                        "primary": "#a1dcff",
+                        "on-primary": "#003549",
+                        "inverse-surface": "#e0e3e6",
+                        "highlight-valid": "#acc267",
+                        "surface-container-low": "#181c1f",
+                        "surface-container": "#1c2023",
+                        "on-surface-variant": "#bfc8cf",
+                        "secondary-container": "#435401",
+                        "error": "#fb9fb1",
+                        "surface": "#151515",
+                        "primary-fixed": "#c4e7ff",
+                        "outline": "#505050",
+                        "surface-container-highest": "#313538",
+                        "on-secondary": "#293500",
+                        "on-primary-container": "#004f6c",
+                        "secondary-fixed": "#d5ec8c",
+                        "background": "#101417",
+                        "surface-container-high": "#272a2d",
+                        "suit-red-cb": "#6fc2ef",
+                        "surface-container-lowest": "#0b0f11",
+                        "suit-red": "#fb9fb1",
+                        "on-secondary-container": "#b2c86d",
+                        "outline-variant": "#3f484e",
+                        "on-secondary-fixed-variant": "#3c4d00",
+                        "inverse-primary": "#00668a",
+                        "surface-bright": "#363a3d",
+                        "primary-fixed-dim": "#7ed0fe",
+                        "tertiary-container": "#e1a3ee",
+                        "on-background": "#e0e3e6",
+                        "on-tertiary-container": "#683476",
+                        "suit-black": "#d0d0d0",
+                        "on-primary-fixed-variant": "#004c69",
+                        "secondary": "#bad073",
+                        "on-tertiary-fixed-variant": "#653173",
+                        "on-tertiary-fixed": "#340043",
+                        "highlight-celebration": "#e1a3ee"
+                    },
+                    "borderRadius": {
+                        "DEFAULT": "0.125rem",
+                        "lg": "0.25rem",
+                        "xl": "0.5rem",
+                        "full": "0.75rem"
+                    },
+                    "spacing": {
+                        "gutter-card": "0.375rem",
+                        "stack-overlap": "2rem",
+                        "margin-edge": "1rem",
+                        "action-bar-height": "64px",
+                        "touch-target-min": "48dp"
+                    },
+                    "fontFamily": {
+                        "label-caps": ["JetBrains Mono"],
+                        "hud-timer": ["JetBrains Mono"],
+                        "card-rank": ["JetBrains Mono"],
+                        "hud-score": ["JetBrains Mono"],
+                        "body-md": ["Inter"],
+                        "headline": ["JetBrains Mono"]
+                    },
+                    "fontSize": {
+                        "label-caps": ["12px", {"lineHeight": "16px", "letterSpacing": "0.08em", "fontWeight": "500"}],
+                        "hud-timer": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+                        "card-rank": ["18px", {"lineHeight": "18px", "fontWeight": "700"}],
+                        "hud-score": ["24px", {"lineHeight": "32px", "letterSpacing": "-0.02em", "fontWeight": "700"}],
+                        "body-md": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+                        "headline": ["28px", {"lineHeight": "32px", "letterSpacing": "-0.01em", "fontWeight": "700"}]
+                    }
+                },
+            },
+        }
+    </script>
+<style>
+    body {
+      min-height: max(884px, 100dvh);
+    }
+  </style>
+  </head>
+<body class="flex flex-col min-h-screen max-w-[390px] mx-auto overflow-hidden shadow-2xl border-x border-outline">
+<!-- 1. Status Bar -->
+<div class="h-[32px] bg-[#202020] flex items-center justify-between px-margin-edge border-b border-outline">
+<span class="font-hud-timer text-[12px] text-on-surface-variant">▌daily/2024-127.json</span>
+<div class="bg-warning/10 border border-warning px-2 py-0.5 rounded-sm">
+<span class="font-hud-timer text-[11px] text-warning font-bold tracking-tighter">EXPIRES 11:42:30</span>
+</div>
+</div>
+<!-- Main Content Canvas -->
+<main class="flex-1 p-margin-edge space-y-4 overflow-y-auto pb-8">
+<!-- 2. Header Card -->
+<section class="h-[130px] bg-[#1a1a1a] border border-[#353535] rounded-lg p-4 flex flex-col justify-between">
+<div class="flex flex-col">
+<span class="font-headline font-bold text-[24px] text-suit-black leading-none">MAY 07 · 2026</span>
+<span class="font-headline font-extrabold text-[32px] text-highlight-valid -tracking-[0.01em] leading-tight">#2024-127</span>
+</div>
+<span class="font-label-caps text-[11px] text-on-surface-variant/70">DRAW-3 · DIFFICULTY ★★★☆☆ · PAR 04:30</span>
+</section>
+<!-- 3. Primary CTA -->
+<button class="w-full h-[64px] bg-primary-container text-surface font-headline font-bold text-[14px] uppercase tracking-wider rounded-lg active:scale-95 transition-transform duration-80 flex items-center justify-center gap-2">
+<span class="material-symbols-outlined text-[18px]">play_arrow</span>
+            ATTEMPT TODAY'S SEED
+        </button>
+<!-- 4. Your Attempts Card -->
+<section class="h-[96px] bg-[#202020] rounded-lg p-4 flex flex-col justify-between">
+<span class="font-label-caps text-[11px] text-on-surface-variant/60 uppercase">YOUR ATTEMPTS</span>
+<div class="flex justify-between items-end">
+<div class="flex flex-col">
+<span class="font-hud-score text-[16px] text-suit-black">BEST 04:12</span>
+<div class="flex items-center gap-2 mt-1">
+<span class="bg-warning text-surface text-[10px] font-bold px-1.5 py-0.5 rounded-sm">WIN</span>
+<span class="font-label-caps text-[11px] text-warning">RANK 17/2843</span>
+</div>
+</div>
+<span class="font-hud-timer text-[13px] text-error mb-1">LAST: FAILED at move 47</span>
+</div>
+</section>
+<!-- 5. Leaderboard Card -->
+<section class="bg-[#202020] rounded-lg p-4 flex flex-col flex-grow">
+<span class="font-label-caps text-[11px] text-on-surface-variant/60 uppercase mb-4">TOP TODAY · 2,843 PLAYERS</span>
+<div class="space-y-0 divide-y divide-[#353535]">
+<!-- Row 1 -->
+<div class="h-[32px] flex items-center justify-between">
+<div class="flex items-center gap-3">
+<span class="w-5 h-5 flex items-center justify-center bg-warning text-surface text-[10px] font-bold rounded-full">01</span>
+<span class="font-hud-timer text-[14px]">swift_jaguar</span>
+</div>
+<span class="font-hud-timer text-[14px] text-on-surface-variant">02:47</span>
+</div>
+<!-- Row 2 -->
+<div class="h-[32px] flex items-center justify-between">
+<div class="flex items-center gap-3">
+<span class="w-5 h-5 flex items-center justify-center bg-[#a0a0a0] text-surface text-[10px] font-bold rounded-full">02</span>
+<span class="font-hud-timer text-[14px]">base16_fan</span>
+</div>
+<span class="font-hud-timer text-[14px] text-on-surface-variant">03:12</span>
+</div>
+<!-- Row 3 -->
+<div class="h-[32px] flex items-center justify-between">
+<div class="flex items-center gap-3">
+<span class="w-5 h-5 flex items-center justify-center bg-[#7a5d3b] text-surface text-[10px] font-bold rounded-full">03</span>
+<span class="font-hud-timer text-[14px]">cli_player</span>
+</div>
+<span class="font-hud-timer text-[14px] text-on-surface-variant">03:54</span>
+</div>
+<!-- Row 4 -->
+<div class="h-[32px] flex items-center justify-between">
+<div class="flex items-center gap-3">
+<span class="w-5 h-5 flex items-center justify-center bg-[#353535] text-on-surface-variant text-[10px] font-bold rounded-full">04</span>
+<span class="font-hud-timer text-[14px]">tablejockey</span>
+</div>
+<span class="font-hud-timer text-[14px] text-on-surface-variant">04:01</span>
+</div>
+<!-- Row 5 -->
+<div class="h-[32px] flex items-center justify-between">
+<div class="flex items-center gap-3">
+<span class="w-5 h-5 flex items-center justify-center bg-[#353535] text-on-surface-variant text-[10px] font-bold rounded-full">05</span>
+<span class="font-hud-timer text-[14px]">vim_motions</span>
+</div>
+<span class="font-hud-timer text-[14px] text-on-surface-variant">04:05</span>
+</div>
+<!-- Row 17 (YOU) -->
+<div class="h-[36px] flex items-center justify-between bg-primary-container/10 -mx-4 px-4 border-y border-primary-container/20">
+<div class="flex items-center gap-3">
+<span class="w-5 h-5 flex items-center justify-center bg-primary-container text-surface text-[10px] font-bold rounded-full">17</span>
+<span class="font-hud-timer text-[14px] text-primary-container font-bold">(YOU) anonymous</span>
+</div>
+<span class="font-hud-timer text-[14px] text-primary-container font-bold">04:12</span>
+</div>
+</div>
+<div class="mt-4 flex-1 border-t border-[#353535] pt-4 flex flex-col items-center justify-center opacity-30 select-none">
+<span class="material-symbols-outlined text-[48px]">terminal</span>
+<span class="font-label-caps text-[10px] mt-2">END OF VISIBLE LOG</span>
+</div>
+</section>
+</main>
+<!-- 6. Footer Navigation -->
+<footer class="h-[24px] bg-background border-t border-outline flex items-center justify-between px-3">
+<div class="flex items-center gap-2">
+<span class="font-label-caps text-[10px] text-on-surface-variant">▌ NORMAL │ daily</span>
+</div>
+<div class="flex items-center gap-3">
+<span class="font-label-caps text-[9px] text-on-surface-variant/70"><span class="text-primary-container">[ENTER]</span> attempt</span>
+<span class="font-label-caps text-[9px] text-on-surface-variant/70"><span class="text-primary-container">[L]</span> full leaderboard</span>
+<span class="font-label-caps text-[9px] text-on-surface-variant/70"><span class="text-primary-container">[ESC]</span> back</span>
+</div>
+</footer>
+<!-- Shared Component Shell Rendering Logic -->
+<header class="w-full top-0 sticky bg-background border-b border-outline flex justify-between items-center px-margin-edge h-action-bar-height hidden">
+<div class="flex items-center gap-3">
+<span class="material-symbols-outlined text-primary">terminal</span>
+<h1 class="font-headline text-headline text-primary uppercase tracking-widest">RUSTY SOLITAIRE</h1>
+</div>
+<span class="material-symbols-outlined text-on-surface-variant hover:text-primary transition-colors duration-120 cursor-pointer">settings</span>
+</header>
+<nav class="fixed bottom-0 w-full h-action-bar-height z-50 bg-surface-container border-t border-outline flex justify-around items-center px-2 hidden">
+<div class="flex flex-col items-center justify-center text-on-surface-variant hover:bg-surface-container-highest transition-colors duration-120 cursor-pointer w-full h-full">
+<span class="material-symbols-outlined">refresh</span>
+<span class="font-label-caps text-label-caps">DEAL</span>
+</div>
+<div class="flex flex-col items-center justify-center text-on-surface-variant hover:bg-surface-container-highest transition-colors duration-120 cursor-pointer w-full h-full">
+<span class="material-symbols-outlined">undo</span>
+<span class="font-label-caps text-label-caps">UNDO</span>
+</div>
+<div class="flex flex-col items-center justify-center text-on-surface-variant hover:bg-surface-container-highest transition-colors duration-120 cursor-pointer w-full h-full">
+<span class="material-symbols-outlined">lightbulb</span>
+<span class="font-label-caps text-label-caps">HINT</span>
+</div>
+<div class="flex flex-col items-center justify-center text-primary dark:text-primary-fixed-dim hover:bg-surface-container-highest transition-colors duration-120 cursor-pointer w-full h-full">
+<span class="material-symbols-outlined">menu</span>
+<span class="font-label-caps text-label-caps">MENU</span>
+</div>
+</nav>
+</body></html>

docs/ui-mockups/design-system.md

@@ -0,0 +1,278 @@
+---
+name: Terminal
+colors:
+  surface: '#151515'
+  surface-dim: '#0d0d0d'
+  surface-bright: '#2a2a2a'
+  surface-container-lowest: '#0a0a0a'
+  surface-container-low: '#1a1a1a'
+  surface-container: '#202020'
+  surface-container-high: '#2a2a2a'
+  surface-container-highest: '#353535'
+  on-surface: '#d0d0d0'
+  on-surface-variant: '#a0a0a0'
+  inverse-surface: '#d0d0d0'
+  inverse-on-surface: '#151515'
+  outline: '#505050'
+  outline-variant: '#353535'
+  surface-tint: '#6fc2ef'
+  primary: '#6fc2ef'
+  on-primary: '#151515'
+  primary-container: '#1f3a4a'
+  on-primary-container: '#a8dcf5'
+  inverse-primary: '#0e6e99'
+  secondary: '#acc267'
+  on-secondary: '#151515'
+  secondary-container: '#2a3320'
+  on-secondary-container: '#c5d585'
+  tertiary: '#e1a3ee'
+  on-tertiary: '#151515'
+  tertiary-container: '#3a2a40'
+  on-tertiary-container: '#eec3f5'
+  error: '#fb9fb1'
+  on-error: '#151515'
+  error-container: '#4a2530'
+  on-error-container: '#fdc3ce'
+  background: '#151515'
+  on-background: '#d0d0d0'
+  surface-variant: '#353535'
+  suit-red: '#fb9fb1'
+  suit-black: '#d0d0d0'
+  suit-red-cb: '#6fc2ef'
+  highlight-valid: '#acc267'
+  highlight-celebration: '#e1a3ee'
+  highlight-warning: '#ddb26f'
+  highlight-info: '#12cfc0'
+typography:
+  hud-score:
+    fontFamily: JetBrains Mono
+    fontSize: 24px
+    fontWeight: '700'
+    lineHeight: 32px
+    letterSpacing: '-0.02em'
+  hud-timer:
+    fontFamily: JetBrains Mono
+    fontSize: 16px
+    fontWeight: '400'
+    lineHeight: 24px
+  card-rank:
+    fontFamily: JetBrains Mono
+    fontSize: 18px
+    fontWeight: '700'
+    lineHeight: 18px
+  body-md:
+    fontFamily: Inter
+    fontSize: 16px
+    fontWeight: '400'
+    lineHeight: 24px
+  label-caps:
+    fontFamily: JetBrains Mono
+    fontSize: 12px
+    fontWeight: '500'
+    lineHeight: 16px
+    letterSpacing: '0.08em'
+  headline:
+    fontFamily: JetBrains Mono
+    fontSize: 28px
+    fontWeight: '700'
+    lineHeight: 32px
+    letterSpacing: '-0.01em'
+rounded:
+  sm: 0.125rem
+  DEFAULT: 0.25rem
+  md: 0.5rem
+  lg: 0.75rem
+  xl: 1rem
+  full: 9999px
+spacing:
+  margin-edge: 1rem
+  gutter-card: 0.375rem
+  stack-overlap: 2rem
+  touch-target-min: 48dp
+---
+
+## Brand & Style
+
+The "Terminal" design system replaces the previous "Premium Solitaire" calm-indie aesthetic with a **retro-terminal / synthwave** identity. The intent is the visual confidence of a well-tuned terminal emulator (think Berkeley Mono dotfiles, base16-eighties, CRT phosphor): monospaced, dense, legible, snappy. It is *not* casino-glitz, *not* skeuomorphic felt, and *not* whimsical.
+
+The personality is **technical, deliberate, slightly playful**. Cards are flat with thin colored strokes; the HUD reads like a status bar; modals look like terminal panes. Motion is short and snap-easing — no bouncy springs. Long-session calm is preserved by keeping the chroma low and reserving saturated accents for *meaning* (CTAs, feedback, celebrations) rather than decoration.
+
+Influences: base16-eighties (Chris Kempson), Berkeley Mono, Vim/Neovim status lines, the iA Writer aesthetic, classic CRT phosphor with no chromatic aberration.
+
+## Palette
+
+The palette is base16-eighties — a 16-slot terminal palette where indices 00–07 form a monochrome ramp and 08–0F provide saturated accents. We map base16 slots to Material Design 3 token roles below.
+
+### Source palette (base16-eighties)
+
+| Slot | Hex | Role |
+|---|---|---|
+| base00 | `#151515` | background |
+| base01 | `#202020` | surface-container |
+| base02 | `#303030` | line-highlight (subtle) |
+| base03 | `#505050` | outline / muted text |
+| base04 | `#b0b0b0` | secondary text |
+| base05 | `#d0d0d0` | foreground / on-surface |
+| base06 | `#e0e0e0` | bright text |
+| base07 | `#f5f5f5` | brightest highlight |
+| base08 | `#fb9fb1` | red — used for `error`, `suit-red` |
+| base09 | `#ddb26f` | orange — used for warning chips |
+| base0A | `#acc267` | yellow/lime — used for `highlight-valid` (drag targets, valid moves) |
+| base0B | `#12cfc0` | green/teal — used for `highlight-info` (toasts, neutral status) |
+| base0C | `#6fc2ef` | cyan/sky — primary CTA, focus ring, `selection`, `suit-red-cb` (color-blind tinted red) |
+| base0D | `#6fc2ef` | (alias) |
+| base0E | `#e1a3ee` | violet — used for celebration (level-up, achievement unlock) |
+| base0F | `#fb9fb1` | (alias) |
+
+### Semantic assignments
+
+- **CTA / Primary action**: cyan `#6fc2ef`. Reserved for "Play," "New Game," "Save," "Resume," and the focus ring on selected cards. Never used decoratively.
+- **Valid-move / drag-target highlight**: lime `#acc267`. Reserved for in-game feedback only. Never appears in chrome.
+- **Celebration**: lavender `#e1a3ee`. Used for level-up flashes, achievement unlock cards, and the daily-streak chip when the streak is active. Quiet otherwise.
+- **Warning / soft alert**: gold `#ddb26f`. Used for "challenge expires in N minutes" chips, sync-pending status, and the daily-seed countdown.
+- **Info**: teal `#12cfc0`. Used for neutral system toasts and the sync-connected indicator.
+- **Error**: pink `#fb9fb1`. Used for sync conflict, server unreachable, invalid move shake.
+
+## Suit Colors
+
+**Two-color traditional mapping**, with mandatory color-blind support:
+
+| Suit | Default | Color-blind mode | Glyph differentiation |
+|---|---|---|---|
+| Hearts | `#fb9fb1` (pink) | `#6fc2ef` (cyan) | Solid filled glyph |
+| Diamonds | `#fb9fb1` (pink) | `#6fc2ef` (cyan) | **Outlined glyph (1.5px stroke)** |
+| Spades | `#d0d0d0` (foreground) | `#d0d0d0` | Solid filled glyph |
+| Clubs | `#d0d0d0` (foreground) | `#d0d0d0` | **Outlined glyph (1.5px stroke)** |
+
+The outlined-glyph treatment is the **primary** differentiation mechanism. Color is supplementary. This means a player viewing the game on a monochrome display, or with severe red-green deficiency, can still distinguish all four suits without context. This is a hard requirement, not an optional setting.
+
+The "color-blind mode" toggle in Settings only swaps red→cyan; it does not turn the outlined glyphs on or off, because outlined glyphs are always on.
+
+## Typography
+
+**Monospace-forward, dual-font system.**
+
+- **JetBrains Mono** is used for: HUD (score, timer, moves), card rank/value text, all labels, all headlines, all numerals anywhere in the app, and any chip-style component. This is the dominant face.
+- **Inter** is used only for: long-form body copy (Help screen, Settings descriptions, achievement tooltips, onboarding copy). It is the *exception*, not the default.
+
+Weights: 400 regular, 500 medium for labels, 700 bold for HUD numbers and headlines. No 600 / no italics anywhere — the terminal aesthetic doesn't have them.
+
+Letter spacing: tight (`-0.02em`) on HUD score for visual mass; wide (`+0.08em`) on uppercase labels for readability at 12px. Body uses default (0).
+
+HUD numbers must use **tabular figures** (`font-feature-settings: 'tnum'`) so the timer and score don't reflow as digits change.
+
+## Layout & Spacing
+
+Optimized for **Android portrait, 390×844 (Pixel 6 baseline), API 34**.
+
+- **Margins**: 16px (1rem) edge safety margin. *Tighter than the previous system's 24px.* Eighties palettes are dense by nature; over-padding fights the aesthetic.
+- **Tableau**: 7-column layout, 32px (2rem) vertical card overlap. Tighter than before to fit a longer cascade on phone screens.
+- **HUD position**: top of screen, in the system safe area. Bottom 64px holds the action bar (Undo / Hint / New Game / Auto-complete). Action bar is **always visible** in-game — no hover-fade — because there is no hover on touch.
+- **Touch target minimum**: 48dp on all interactive elements. Cards in the tableau may be smaller visually but use a 48dp invisible hit area centered on the visible glyph.
+
+## Elevation & Depth
+
+Depth is created through **tonal layering and 1px outlines**, not blur shadows. (Synthwave-flat, not Material-soft.)
+
+- **Level 0 (Background)**: the `#151515` base canvas.
+- **Level 1 (Tableau slots, empty piles)**: 1px dashed outline in `#353535`. Empty foundations show a faint suit glyph at 12% opacity inside the outline.
+- **Level 2 (Cards at rest)**: solid `#1a1a1a` fill, 1px solid border in the suit color (so the suit is detectable at a glance even if the card is partially obscured).
+- **Level 3 (Active / dragged card)**: same border, but glow effect: 0 0 12px of `#6fc2ef` at 40% opacity. **No scale transform** — flatness preserved. Z-index lifts above siblings.
+- **Modals**: full-screen with backdrop `#151515` at 95% opacity (just enough to dim the table without blurring it). Modal panel is `#202020` with a 1px `#505050` border — like a terminal pane.
+- **Toasts**: bottom of screen, `#202020` fill, 1px border in the toast's accent color (info=teal, warning=gold, error=pink, celebration=lavender). 16px monospaced caption.
+
+No `box-shadow` is used anywhere. **All depth is achieved with borders and tonal value.** This is a hard constraint.
+
+## Shapes
+
+The shape language is **soft-rounded but tight**:
+
+- **Cards**: `rounded-md` (8px) — slightly less rounded than the previous system's 16px to read more "technical."
+- **Buttons / chips / inputs**: `rounded` (4px) default, `rounded-sm` (2px) for the smallest chips.
+- **Modals / sheets**: `rounded-lg` (12px).
+- **Avatars / circular indicators**: `rounded-full`.
+- **Card-back pattern corners**: matches the card's `rounded-md`.
+
+Selection highlights use a **2px inset stroke** in `#6fc2ef` following the host shape's corner radius. Never an outer stroke — the outer stroke is reserved for the suit-color hairline.
+
+## Motion
+
+**Snappy, no spring.** All transitions use `ease-out` with a 120ms duration unless specified.
+
+- Card lift (start drag): 80ms.
+- Card place (drop): 120ms with a 16ms holdframe (no bounce).
+- Modal enter: 200ms ease-out, fade + 8px translate-up.
+- Modal exit: 120ms ease-in, fade only.
+- Selection ring appear: 80ms.
+- Win-summary stat reveal: 60ms each, staggered 40ms.
+- HUD number tick: instant (no transition) — terminal counters don't ease.
+
+**Optional CRT effect**: a 1-frame scanline sweep across the screen on game-state transitions (start, win, restart). User-toggleable in Settings. Off by default.
+
+## Components
+
+### Game Cards
+
+Flat face design.
+- Background: `#1a1a1a`
+- Border: 1px solid in suit color (pink for hearts/diamonds, foreground gray for spades/clubs)
+- Top-left: rank in JetBrains Mono Bold 18px + small suit glyph (10px)
+- Bottom-right: large suit glyph (32px), rotated 180°
+- Corner radius: 8px
+- Suit differentiation: hearts and spades have **filled** glyphs; diamonds and clubs have **outlined** glyphs (1.5px stroke)
+
+### Card Back ("Terminal" theme)
+
+- Theme name: `"Terminal"`
+- Author: `"Rusty Solitaire"`
+- Background: `#151515`
+- Pattern: horizontal scanlines at 2px pitch in `#1a1a1a` (1px line, 1px gap), full bleed
+- Border: 1px solid `#353535`
+- Top-left badge: a 12×16px solid `#6fc2ef` block (the "terminal cursor"), 6px from the corner
+- Bottom-right monogram: the characters `▌RS` in JetBrains Mono 12px, color `#505050`, 6px from the corner
+- Corner radius: 8px (matches face)
+
+### Primary Buttons
+
+Solid `#6fc2ef` fill, `#151515` text, JetBrains Mono Medium 14px uppercase with `+0.08em` tracking. 4px corner radius. Pressed state: darken to `#5aa9d4`. Disabled: `#353535` fill, `#505050` text.
+
+### Secondary Buttons
+
+Transparent fill, 1px `#505050` border, `#d0d0d0` text. Hover/press: border becomes `#6fc2ef`, text becomes `#6fc2ef`.
+
+### HUD Chips
+
+`#202020` fill, no border, 4px radius. Monospaced 16px text. Score chip pulses to `#acc267` for 200ms when score increases.
+
+### Drag Targets
+
+When a card is being dragged over a valid pile, the pile's empty-slot dashed outline becomes:
+- Solid 1px in `#acc267`
+- Plus a 0 0 8px outer glow in `#acc267` at 30% opacity
+
+This is the *only* place glow effects appear in the system.
+
+### Modals
+
+Full-screen backdrop at 95% opacity. Centered panel: `#202020` fill, 1px `#505050` border, 12px corner radius. Title bar shows the screen name in monospaced 14px, color `#a0a0a0`, with a single `▌` cursor character prefix to reinforce the terminal pane motif.
+
+### Navigation Bar
+
+Fixed at the bottom of in-game screens. Height: 64px. `#202020` fill, 1px top border in `#353535`. Four icon buttons: Undo / Hint / New / Auto-complete. Icons: 24px, 1.5px stroke weight, color `#d0d0d0`. Active/pressed: icon color `#6fc2ef`.
+
+### Status / Sync Indicator
+
+Top-right corner of the HUD: a 6px circular dot.
+- Connected & synced: `#12cfc0`
+- Pending: `#ddb26f` (pulsing 1.5s)
+- Error: `#fb9fb1` (steady)
+- Offline: `#505050`
+
+## Accessibility
+
+1. **Color-blind mode** (Settings → Gameplay): swaps red suits' default `#fb9fb1` for `#6fc2ef`. Outlined-glyph differentiation remains active in *all* modes.
+2. **High-contrast mode** (Settings → Gameplay): boosts on-surface from `#d0d0d0` to `#f5f5f5`, outline from `#505050` to `#a0a0a0`, suit-red from `#fb9fb1` to `#ff8aa0`.
+3. **Reduce-motion mode** (Settings → Gameplay): disables card-lift transition (instant z-lift), disables CRT scanline effect, disables the warning-chip pulse animation.
+4. **Tabular figures** are mandatory for any number that updates live (timer, score, moves) so they don't reflow.
+5. **Touch targets** are 48dp minimum even when the visual element is smaller.
+6. **Text contrast**: all body text on background passes WCAG AA at minimum (`#d0d0d0` on `#151515` = 9.5:1; `#a0a0a0` on `#151515` = 5.7:1).

docs/ui-mockups/game-table-mobile.html

@@ -0,0 +1,253 @@
+<!DOCTYPE html>
+
+<html class="dark" lang="en"><head>
+<meta charset="utf-8"/>
+<meta content="width=device-width, initial-scale=1.0" name="viewport"/>
+<script src="https://cdn.tailwindcss.com?plugins=forms,container-queries"></script>
+<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&amp;family=Inter:wght@400;500&amp;family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<style>
+        .material-symbols-outlined {
+            font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
+        }
+        .outlined-glyph {
+            -webkit-text-stroke: 1.5px currentColor;
+            color: transparent;
+        }
+        .scanline-pattern {
+            background: repeating-linear-gradient(
+                0deg,
+                #1a1a1a,
+                #1a1a1a 2px,
+                #151515 2px,
+                #151515 4px
+            );
+        }
+        .tabular-nums {
+            font-variant-numeric: tabular-nums;
+        }
+    </style>
+<script id="tailwind-config">
+        tailwind.config = {
+            darkMode: "class",
+            theme: {
+                extend: {
+                    "colors": {
+                        "surface": "#151515",
+                        "secondary-fixed": "#d5ec8c",
+                        "warning": "#ddb26f",
+                        "tertiary-fixed": "#fbd7ff",
+                        "on-tertiary-fixed-variant": "#653173",
+                        "on-background": "#e0e3e6",
+                        "on-primary-container": "#004f6c",
+                        "surface-container-lowest": "#0b0f11",
+                        "on-surface": "#e0e3e6",
+                        "error": "#fb9fb1",
+                        "primary-fixed-dim": "#7ed0fe",
+                        "inverse-primary": "#00668a",
+                        "surface-container-high": "#272a2d",
+                        "suit-red-cb": "#6fc2ef",
+                        "surface-bright": "#363a3d",
+                        "on-primary": "#003549",
+                        "on-tertiary": "#4c195b",
+                        "error-container": "#93000a",
+                        "on-tertiary-fixed": "#340043",
+                        "surface-container": "#202020",
+                        "tertiary-container": "#e1a3ee",
+                        "on-primary-fixed-variant": "#004c69",
+                        "surface-container-highest": "#313538",
+                        "highlight-celebration": "#e1a3ee",
+                        "highlight-valid": "#acc267",
+                        "primary": "#a1dcff",
+                        "secondary-fixed-dim": "#bad073",
+                        "on-primary-fixed": "#001e2c",
+                        "on-error-container": "#ffdad6",
+                        "secondary": "#bad073",
+                        "on-tertiary": "#293500",
+                        "on-secondary-container": "#b2c86d",
+                        "inverse-on-surface": "#2d3134",
+                        "on-error": "#690005",
+                        "info": "#12cfc0",
+                        "suit-red": "#fb9fb1",
+                        "surface-dim": "#101417",
+                        "surface-tint": "#7ed0fe",
+                        "background": "#101417",
+                        "secondary-container": "#435401",
+                        "surface-variant": "#313538",
+                        "outline-variant": "#3f484e",
+                        "on-surface-variant": "#bfc8cf",
+                        "primary-fixed": "#c4e7ff",
+                        "on-secondary-fixed-variant": "#3c4d00",
+                        "on-secondary-fixed": "#161e00",
+                        "suit-black": "#d0d0d0"
+                    },
+                    "borderRadius": {
+                        "DEFAULT": "0.125rem",
+                        "lg": "0.25rem",
+                        "xl": "0.5rem",
+                        "full": "0.75rem"
+                    },
+                    "spacing": {
+                        "touch-target-min": "48px",
+                        "margin-edge": "1rem",
+                        "action-bar-height": "64px",
+                        "stack-overlap": "2rem",
+                        "gutter-card": "0.375rem"
+                    },
+                    "fontFamily": {
+                        "label-caps": ["JetBrains Mono"],
+                        "headline": ["JetBrains Mono"],
+                        "card-rank": ["JetBrains Mono"],
+                        "body-md": ["Inter"],
+                        "hud-score": ["JetBrains Mono"],
+                        "hud-timer": ["JetBrains Mono"]
+                    },
+                    "fontSize": {
+                        "label-caps": ["12px", {"lineHeight": "16px", "letterSpacing": "0.08em", "fontWeight": "500"}],
+                        "headline": ["28px", {"lineHeight": "32px", "letterSpacing": "-0.01em", "fontWeight": "700"}],
+                        "card-rank": ["18px", {"lineHeight": "18px", "fontWeight": "700"}],
+                        "body-md": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+                        "hud-score": ["24px", {"lineHeight": "32px", "letterSpacing": "-0.02em", "fontWeight": "700"}],
+                        "hud-timer": ["16px", {"lineHeight": "24px", "fontWeight": "400"}]
+                    }
+                },
+            },
+        }
+    </script>
+<style>
+    body {
+      min-height: max(884px, 100dvh);
+    }
+  </style>
+  </head>
+<body class="bg-surface text-on-surface font-body-md overflow-hidden selection:bg-primary selection:text-surface">
+<!-- TopAppBar -->
+<header class="fixed top-0 w-full flex justify-between items-center px-margin-edge h-[56px] bg-surface-container border-b border-outline dark:border-outline z-50">
+<div class="flex items-center gap-2">
+<span class="material-symbols-outlined text-primary">terminal</span>
+<h1 class="font-hud-score text-[18px] text-primary">solitaire.sh</h1>
+</div>
+<div class="flex items-center gap-4">
+<div class="w-[6px] h-[6px] rounded-full bg-info"></div>
+<span class="material-symbols-outlined text-on-surface-variant">settings</span>
+</div>
+</header>
+<!-- HUD Band -->
+<div class="fixed top-[56px] left-0 w-full h-[56px] bg-surface-container border-b border-outline-variant flex items-center justify-around px-margin-edge z-40">
+<div class="bg-surface p-1 px-3 rounded flex flex-col items-center">
+<span class="font-label-caps text-[10px] text-on-surface-variant">SCORE</span>
+<span class="font-hud-score text-primary tabular-nums">247</span>
+</div>
+<div class="bg-surface p-1 px-3 rounded flex flex-col items-center border border-outline">
+<span class="font-label-caps text-[10px] text-on-surface-variant">TIME</span>
+<span class="font-hud-timer text-on-surface tabular-nums">12:34</span>
+</div>
+<div class="bg-surface p-1 px-3 rounded flex flex-col items-center">
+<span class="font-label-caps text-[10px] text-on-surface-variant">MOVES</span>
+<span class="font-hud-score text-secondary tabular-nums">87</span>
+</div>
+</div>
+<!-- Main Game Table -->
+<main class="pt-[124px] px-margin-edge h-screen w-full relative">
+<!-- Top Row: Stock, Waste, Foundations -->
+<div class="grid grid-cols-7 gap-gutter-card h-[110px]">
+<!-- Stock -->
+<div class="relative w-full h-full rounded-xl border border-outline-variant bg-surface overflow-hidden scanline-pattern">
+<div class="absolute top-1 left-1 w-3 h-4 bg-suit-red-cb"></div>
+<div class="absolute bottom-1 right-1 font-label-caps text-[8px] text-suit-black">▌RS</div>
+<div class="absolute bottom-[-16px] left-0 w-full text-center font-label-caps text-[10px] text-on-surface-variant">STOCK · 18</div>
+</div>
+<!-- Waste -->
+<div class="relative w-full h-full rounded-xl border border-suit-red bg-[#1a1a1a] flex flex-col justify-between p-1.5">
+<div class="font-card-rank text-suit-red leading-none">10<br/><span class="font-normal">♥</span></div>
+<div class="self-end text-[32px] font-card-rank text-suit-red rotate-180">♥</div>
+</div>
+<!-- Empty Gap -->
+<div></div>
+<!-- Foundation S -->
+<div class="relative w-full h-full rounded-xl border border-dashed border-outline-variant flex items-center justify-center">
+<span class="text-on-surface-variant opacity-20 text-[32px] font-card-rank">♠</span>
+</div>
+<!-- Foundation H -->
+<div class="relative w-full h-full rounded-xl border border-suit-red bg-[#1a1a1a] flex flex-col justify-between p-1.5">
+<div class="font-card-rank text-suit-red leading-none">2<br/><span class="font-normal">♥</span></div>
+<div class="self-end text-[32px] font-card-rank text-suit-red rotate-180">♥</div>
+</div>
+<!-- Foundation C -->
+<div class="relative w-full h-full rounded-xl border border-dashed border-outline-variant flex items-center justify-center">
+<span class="text-on-surface-variant opacity-20 text-[32px] font-card-rank outlined-glyph">♣</span>
+</div>
+<!-- Foundation D -->
+<div class="relative w-full h-full rounded-xl border border-dashed border-outline-variant flex items-center justify-center">
+<span class="text-on-surface-variant opacity-20 text-[32px] font-card-rank outlined-glyph">♦</span>
+</div>
+</div>
+<!-- Tableau -->
+<div class="mt-8 grid grid-cols-7 gap-gutter-card items-start relative h-[400px]">
+<!-- Col 1 -->
+<div class="relative w-full h-full">
+<div class="w-full h-[96px] rounded-xl border border-suit-black bg-[#1a1a1a] p-1.5">
+<div class="font-card-rank text-suit-black leading-none">K<br/><span class="font-normal">♠</span></div>
+</div>
+</div>
+<!-- Col 2 -->
+<div class="relative w-full h-full">
+<div class="w-full h-[96px] rounded-xl border border-outline bg-[#1a1a1a] scanline-pattern"></div>
+<div class="absolute top-[32px] w-full h-[96px] rounded-xl border border-suit-red bg-[#1a1a1a] p-1.5">
+<div class="font-card-rank text-suit-red leading-none">Q<br/><span class="font-normal">♥</span></div>
+</div>
+</div>
+<!-- Col 3 -->
+<div class="relative w-full h-full">
+<div class="w-full h-[96px] rounded-xl border border-outline bg-[#1a1a1a] scanline-pattern"></div>
+<div class="absolute top-[32px] w-full h-[96px] rounded-xl border border-outline bg-[#1a1a1a] scanline-pattern"></div>
+<div class="absolute top-[64px] w-full h-[96px] rounded-xl border border-suit-red bg-[#1a1a1a] p-1.5">
+<div class="font-card-rank text-suit-red leading-none">10<br/><span class="font-normal outlined-glyph">♦</span></div>
+</div>
+</div>
+<!-- Col 4 -->
+<div class="relative w-full h-full">
+<div class="w-full h-[96px] rounded-xl border border-outline bg-[#1a1a1a] scanline-pattern"></div>
+<div class="w-full h-[96px] rounded-xl border border-outline bg-[#1a1a1a] scanline-pattern absolute top-[32px]"></div>
+<!-- Valid Drop Target Glow -->
+<div class="absolute top-[64px] w-full h-[96px] rounded-xl border border-suit-black bg-[#1a1a1a] p-1.5 ring-4 ring-highlight-valid/30">
+<div class="font-card-rank text-suit-black leading-none">9<br/><span class="font-normal">♠</span></div>
+</div>
+</div>
+<!-- Col 5, 6 (Empty/Filler) -->
+<div class="relative w-full"></div>
+<div class="relative w-full"></div>
+<!-- Col 7 -->
+<div class="relative w-full">
+<!-- Original Position Placeholder -->
+<div class="w-full h-[96px] rounded-xl border border-dashed border-outline"></div>
+<!-- Being Dragged Card -->
+<div class="absolute top-[-20px] left-[30px] w-full h-[96px] rounded-xl border border-suit-red bg-[#1a1a1a] p-1.5 shadow-[0_0_20px_rgba(111,194,239,0.4)] z-50 ring-1 ring-primary/40">
+<div class="font-card-rank text-suit-red leading-none">4<br/><span class="font-normal outlined-glyph">♦</span></div>
+<div class="absolute bottom-1 right-1 text-[24px] font-card-rank text-suit-red rotate-180 outlined-glyph">♦</div>
+</div>
+</div>
+</div>
+</main>
+<!-- BottomNavBar / Action Bar -->
+<nav class="fixed bottom-0 left-0 w-full h-action-bar-height bg-surface-container border-t border-outline-variant flex justify-around items-center px-margin-edge z-50">
+<button class="flex flex-col items-center justify-center text-on-surface-variant hover:text-info transition-colors duration-120 active:opacity-80">
+<span class="material-symbols-outlined" data-icon="menu">menu</span>
+<span class="font-label-caps text-[10px] mt-1">[ESC] MENU</span>
+</button>
+<button class="flex flex-col items-center justify-center text-info font-bold active:opacity-80">
+<span class="material-symbols-outlined" data-icon="undo">undo</span>
+<span class="font-label-caps text-[10px] mt-1">[U] UNDO</span>
+</button>
+<button class="flex flex-col items-center justify-center text-on-surface-variant hover:text-info transition-colors duration-120 active:opacity-80">
+<span class="material-symbols-outlined" data-icon="lightbulb">lightbulb</span>
+<span class="font-label-caps text-[10px] mt-1">[H] HINT</span>
+</button>
+<button class="flex flex-col items-center justify-center text-on-surface-variant hover:text-info transition-colors duration-120 active:opacity-80">
+<span class="material-symbols-outlined" data-icon="add_box">add_box</span>
+<span class="font-label-caps text-[10px] mt-1">[N] NEW</span>
+</button>
+</nav>
+<!-- Drag & CRT Overlay (Visual Decoration) -->
+<div class="pointer-events-none fixed inset-0 z-[100] opacity-[0.03] scanline-pattern mix-blend-overlay"></div>
+</body></html>

docs/ui-mockups/help-mobile.html

@@ -0,0 +1,200 @@
+<!DOCTYPE html>
+
+<html class="dark" lang="en"><head>
+<meta charset="utf-8"/>
+<meta content="width=device-width, initial-scale=1.0" name="viewport"/>
+<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&amp;family=Inter:wght@400&amp;family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<script src="https://cdn.tailwindcss.com?plugins=forms,container-queries"></script>
+<script id="tailwind-config">
+        tailwind.config = {
+            darkMode: "class",
+            theme: {
+                extend: {
+                    "colors": {
+                        "on-secondary-container": "#b2c86d",
+                        "secondary-fixed-dim": "#bad073",
+                        "surface-tint": "#7ed0fe",
+                        "on-surface-variant": "#bfc8cf",
+                        "surface-container-low": "#181c1f",
+                        "secondary-fixed": "#d5ec8c",
+                        "primary-fixed-dim": "#7ed0fe",
+                        "secondary": "#bad073",
+                        "tertiary-container": "#e1a3ee",
+                        "inverse-on-surface": "#2d3134",
+                        "surface-container-lowest": "#0b0f11",
+                        "on-error-container": "#ffdad6",
+                        "on-primary-fixed-variant": "#004c69",
+                        "secondary-container": "#435401",
+                        "background": "#101417",
+                        "surface-variant": "#313538",
+                        "on-primary-container": "#004f6c",
+                        "highlight-valid": "#acc267",
+                        "outline-variant": "#3f484e",
+                        "on-background": "#e0e3e6",
+                        "surface-bright": "#363a3d",
+                        "on-tertiary-fixed-variant": "#653173",
+                        "on-secondary-fixed": "#161e00",
+                        "surface-dim": "#101417",
+                        "on-surface": "#e0e3e6",
+                        "info": "#12cfc0",
+                        "on-secondary": "#293500",
+                        "suit-red": "#fb9fb1",
+                        "error": "#fb9fb1",
+                        "error-container": "#93000a",
+                        "surface-container": "#202020",
+                        "primary-fixed": "#c4e7ff",
+                        "warning": "#ddb26f",
+                        "tertiary": "#f7c3ff",
+                        "highlight-celebration": "#e1a3ee",
+                        "tertiary-fixed": "#fbd7ff",
+                        "inverse-surface": "#e0e3e6",
+                        "tertiary-fixed-dim": "#f0b0fc",
+                        "primary-container": "#6fc2ef",
+                        "on-secondary-fixed-variant": "#3c4d00",
+                        "on-tertiary": "#4c195b",
+                        "suit-red-cb": "#6fc2ef",
+                        "surface-container-highest": "#313538",
+                        "on-primary-fixed": "#001e2c",
+                        "surface-container-high": "#272a2d",
+                        "primary": "#a1dcff",
+                        "suit-black": "#d0d0d0",
+                        "on-tertiary-container": "#683476",
+                        "on-error": "#690005",
+                        "inverse-primary": "#00668a",
+                        "on-tertiary-fixed": "#340043",
+                        "outline": "#505050",
+                        "on-primary": "#003549",
+                        "surface": "#151515"
+                    },
+                    "fontFamily": {
+                        "jetbrains": ["JetBrains Mono", "monospace"],
+                        "inter": ["Inter", "sans-serif"]
+                    }
+                }
+            }
+        }
+    </script>
+<style>
+        .material-symbols-outlined {
+            font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
+            vertical-align: middle;
+            font-size: 16px;
+        }
+        .tabular-nums { font-variant-numeric: tabular-nums; }
+        body { background-color: #151515; }
+    </style>
+<style>
+    body {
+      min-height: max(884px, 100dvh);
+    }
+  </style>
+  </head>
+<body class="flex items-center justify-center min-h-screen p-4">
+<!-- Mobile Container (390x844) -->
+<div class="w-[390px] h-[844px] bg-surface flex flex-col overflow-hidden relative border border-outline/20">
+<!-- 1. Status Bar -->
+<header class="h-[32px] bg-surface-container flex items-center justify-between px-4 shrink-0">
+<span class="font-jetbrains text-[12px] font-bold text-suit-black tracking-tight">▌rusty-solitaire(1) · MAN PAGE</span>
+<button class="font-jetbrains text-[12px] font-bold text-suit-black/60 hover:text-primary transition-colors">× CLOSE</button>
+</header>
+<!-- 2. Heading Band -->
+<div class="h-[120px] px-4 pt-10 pb-4 shrink-0">
+<h1 class="font-jetbrains font-bold text-[24px] text-suit-black leading-none mb-1">GESTURES &amp; SHORTCUTS</h1>
+<p class="font-inter text-[13px] text-on-surface-variant/80">Touch gestures and keyboard equivalents.</p>
+</div>
+<!-- Scrollable Content Section -->
+<main class="flex-1 overflow-y-auto px-4 pb-8 space-y-6">
+<!-- 3a. TOUCH GESTURES -->
+<section class="space-y-3">
+<h2 class="font-jetbrains text-[11px] font-medium tracking-widest text-on-surface-variant/60 uppercase">TOUCH GESTURES</h2>
+<div class="space-y-1">
+<!-- Row 1 -->
+<div class="h-[56px] bg-surface-container rounded-lg px-3 flex items-center border border-outline/10">
+<div class="w-[40%] flex items-center gap-2">
+<span class="material-symbols-outlined text-suit-black" data-icon="square">square</span>
+<span class="font-jetbrains text-[13px] font-medium text-suit-black uppercase">TAP card</span>
+</div>
+<div class="w-[60%] font-jetbrains text-[12px] text-on-surface-variant leading-tight">Select / unselect for move</div>
+</div>
+<!-- Row 2 -->
+<div class="h-[56px] bg-surface-container rounded-lg px-3 flex items-center border border-outline/10">
+<div class="w-[40%] flex items-center gap-2">
+<span class="material-symbols-outlined text-suit-black" data-icon="east">east</span>
+<span class="font-jetbrains text-[13px] font-medium text-suit-black uppercase">DRAG stack</span>
+</div>
+<div class="w-[60%] font-jetbrains text-[12px] text-on-surface-variant leading-tight">Move with translucent ghost preview</div>
+</div>
+<!-- Row 3 -->
+<div class="h-[56px] bg-surface-container rounded-lg px-3 flex items-center border border-outline/10">
+<div class="w-[40%] flex items-center gap-2">
+<span class="material-symbols-outlined text-suit-black" data-icon="double_arrow">double_arrow</span>
+<span class="font-jetbrains text-[13px] font-medium text-suit-black uppercase">DOUBLE-TAP</span>
+</div>
+<div class="w-[60%] font-jetbrains text-[12px] text-on-surface-variant leading-tight">Auto-send to best foundation</div>
+</div>
+<!-- Row 4 -->
+<div class="h-[56px] bg-surface-container rounded-lg px-3 flex items-center border border-outline/10">
+<div class="w-[40%] flex items-center gap-2">
+<span class="material-symbols-outlined text-suit-black" data-icon="touch_app">touch_app</span>
+<span class="font-jetbrains text-[13px] font-medium text-suit-black uppercase">LONG-PRESS</span>
+</div>
+<div class="w-[60%] font-jetbrains text-[12px] text-on-surface-variant leading-tight">Highlight all legal moves for card</div>
+</div>
+<!-- Row 5 -->
+<div class="h-[56px] bg-surface-container rounded-lg px-3 flex items-center border border-outline/10">
+<div class="w-[40%] flex items-center gap-2">
+<span class="material-symbols-outlined text-suit-black" data-icon="south">south</span>
+<span class="font-jetbrains text-[13px] font-medium text-suit-black uppercase">SWIPE DOWN</span>
+</div>
+<div class="w-[60%] font-jetbrains text-[12px] text-on-surface-variant leading-tight">Reveal hidden action bar</div>
+</div>
+</div>
+</section>
+<!-- 3b. KEYBOARD SHORTCUTS -->
+<section class="space-y-3">
+<h2 class="font-jetbrains text-[11px] font-medium tracking-widest text-on-surface-variant/60 uppercase">KEYBOARD SHORTCUTS</h2>
+<div class="space-y-1">
+<!-- Row 1 -->
+<div class="h-[56px] bg-surface-container rounded-lg px-3 flex items-center border border-outline/10">
+<div class="w-[40%] font-jetbrains text-[13px] font-medium text-suit-black uppercase">[U]</div>
+<div class="w-[60%] font-jetbrains text-[12px] text-on-surface-variant leading-tight">Undo last move</div>
+</div>
+<!-- Row 2 -->
+<div class="h-[56px] bg-surface-container rounded-lg px-3 flex items-center border border-outline/10">
+<div class="w-[40%] font-jetbrains text-[13px] font-medium text-suit-black uppercase">[H]</div>
+<div class="w-[60%] font-jetbrains text-[12px] text-on-surface-variant leading-tight">Show hint</div>
+</div>
+<!-- Row 3 -->
+<div class="h-[56px] bg-surface-container rounded-lg px-3 flex items-center border border-outline/10">
+<div class="w-[40%] font-jetbrains text-[13px] font-medium text-suit-black uppercase">[N]</div>
+<div class="w-[60%] font-jetbrains text-[12px] text-on-surface-variant leading-tight">New game</div>
+</div>
+<!-- Row 4 -->
+<div class="h-[56px] bg-surface-container rounded-lg px-3 flex items-center border border-outline/10">
+<div class="w-[40%] font-jetbrains text-[13px] font-medium text-suit-black uppercase">[A]</div>
+<div class="w-[60%] font-jetbrains text-[12px] text-on-surface-variant leading-tight">Auto-complete (when possible)</div>
+</div>
+<!-- Row 5 -->
+<div class="h-[56px] bg-surface-container rounded-lg px-3 flex items-center border border-outline/10">
+<div class="w-[40%] font-jetbrains text-[13px] font-medium text-suit-black uppercase">[ESC]</div>
+<div class="w-[60%] font-jetbrains text-[12px] text-on-surface-variant leading-tight">Pause / back</div>
+</div>
+</div>
+</section>
+</main>
+<!-- 4. Footer -->
+<footer class="h-[24px] bg-surface-container border-t border-outline/20 flex items-center justify-between px-2 shrink-0">
+<div class="font-jetbrains text-[10px] text-suit-black">
+<span class="opacity-80">▌ NORMAL │ help</span>
+</div>
+<div class="font-jetbrains text-[10px] uppercase tracking-wider flex items-center gap-1">
+<span class="text-outline">PRESS</span>
+<span class="text-on-surface-variant">[ESC]</span>
+<span class="text-outline">OR TAP</span>
+<span class="text-on-surface-variant">×</span>
+<span class="text-outline">TO RETURN</span>
+</div>
+</footer>
+</div>
+</body></html>

docs/ui-mockups/home-menu-desktop.html

@@ -0,0 +1,343 @@
+<!DOCTYPE html>
+
+<html class="dark" lang="en"><head>
+<meta charset="utf-8"/>
+<meta content="width=device-width, initial-scale=1.0" name="viewport"/>
+<title>RS_TERMINAL_OS - Rusty Solitaire</title>
+<script src="https://cdn.tailwindcss.com?plugins=forms,container-queries"></script>
+<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700;800&amp;family=Inter:wght@400;500&amp;family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<style>
+    .material-symbols-outlined {
+      font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
+      font-size: 18px;
+    }
+    body {
+      background-color: #151515;
+      color: #d0d0d0;
+      font-family: 'JetBrains Mono', monospace;
+      overflow: hidden;
+    }
+    .scanline {
+      width: 100%;
+      height: 2px;
+      background: rgba(26, 26, 26, 0.5);
+      position: absolute;
+      pointer-events: none;
+    }
+    .custom-scrollbar::-webkit-scrollbar {
+      width: 4px;
+    }
+    .custom-scrollbar::-webkit-scrollbar-track {
+      background: #151515;
+    }
+    .custom-scrollbar::-webkit-scrollbar-thumb {
+      background: #353535;
+    }
+  </style>
+<script id="tailwind-config">
+    tailwind.config = {
+      darkMode: "class",
+      theme: {
+        extend: {
+          "colors": {
+                  "on-tertiary-container": "#683476",
+                  "surface-dim": "#101417",
+                  "primary-fixed": "#c4e7ff",
+                  "on-error": "#690005",
+                  "on-secondary-fixed": "#161e00",
+                  "on-tertiary": "#4c195b",
+                  "primary-fixed-dim": "#7ed0fe",
+                  "outline-variant": "#3f484e",
+                  "tertiary": "#f7c3ff",
+                  "surface": "#151515",
+                  "tertiary-container": "#e1a3ee",
+                  "highlight-celebration": "#e1a3ee",
+                  "background": "#101417",
+                  "surface-container": "#202020",
+                  "primary-container": "#6fc2ef",
+                  "on-secondary-fixed-variant": "#3c4d00",
+                  "on-surface": "#d0d0d0",
+                  "inverse-on-surface": "#2d3134",
+                  "on-error-container": "#ffdad6",
+                  "surface-container-low": "#181c1f",
+                  "on-tertiary-fixed": "#340043",
+                  "on-secondary-container": "#b2c86d",
+                  "on-background": "#e0e3e6",
+                  "secondary-container": "#435401",
+                  "error": "#fb9fb1",
+                  "info": "#12cfc0",
+                  "on-surface-variant": "#bfc8cf",
+                  "warning": "#ddb26f",
+                  "inverse-primary": "#00668a",
+                  "tertiary-fixed-dim": "#f0b0fc",
+                  "surface-tint": "#7ed0fe",
+                  "suit-black": "#d0d0d0",
+                  "tertiary-fixed": "#fbd7ff",
+                  "on-secondary": "#293500",
+                  "on-primary-fixed": "#001e2c",
+                  "surface-container-highest": "#313538",
+                  "error-container": "#93000a",
+                  "surface-container-high": "#272a2d",
+                  "on-primary-container": "#004f6c",
+                  "inverse-surface": "#e0e3e6",
+                  "on-primary": "#003549",
+                  "suit-red-cb": "#6fc2ef",
+                  "on-primary-fixed-variant": "#004c69",
+                  "on-tertiary-fixed-variant": "#653173",
+                  "secondary-fixed": "#d5ec8c",
+                  "highlight-valid": "#acc267",
+                  "surface-variant": "#313538",
+                  "secondary": "#bad073",
+                  "secondary-fixed-dim": "#bad073",
+                  "outline": "#505050",
+                  "surface-container-lowest": "#0b0f11",
+                  "primary": "#a1dcff",
+                  "surface-bright": "#363a3d",
+                  "suit-red": "#fb9fb1"
+          },
+          "borderRadius": {
+                  "DEFAULT": "0px",
+                  "lg": "0px",
+                  "xl": "0px",
+                  "full": "0px"
+          },
+          "spacing": {
+                  "stack-overlap": "2rem",
+                  "touch-target-min": "48px",
+                  "margin-edge": "1rem",
+                  "gutter-card": "0.375rem",
+                  "action-bar-height": "64px"
+          },
+          "fontFamily": {
+                  "card-rank": ["JetBrains Mono"],
+                  "headline": ["JetBrains Mono"],
+                  "hud-timer": ["JetBrains Mono"],
+                  "hud-score": ["JetBrains Mono"],
+                  "body-md": ["Inter"],
+                  "label-caps": ["JetBrains Mono"]
+          },
+          "fontSize": {
+                  "card-rank": ["18px", {"lineHeight": "18px", "fontWeight": "700"}],
+                  "headline": ["28px", {"lineHeight": "32px", "letterSpacing": "-0.01em", "fontWeight": "700"}],
+                  "hud-timer": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+                  "hud-score": ["24px", {"lineHeight": "32px", "letterSpacing": "-0.02em", "fontWeight": "700"}],
+                  "body-md": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+                  "label-caps": ["12px", {"lineHeight": "16px", "letterSpacing": "0.08em", "fontWeight": "500"}]
+          }
+        },
+      },
+    }
+  </script>
+</head>
+<body class="bg-surface text-on-surface h-screen flex flex-col antialiased">
+<!-- TOP BAR (32px) -->
+<header class="h-8 bg-surface-container border-b border-outline flex items-center justify-between px-4 z-50">
+<div class="flex items-center gap-2">
+<span class="text-primary-container font-bold">▌</span>
+<h1 class="font-headline text-[14px] font-bold tracking-tight text-on-surface">RS_TERMINAL_OS</h1>
+</div>
+<nav class="flex gap-4 font-label-caps text-[12px] uppercase tracking-widest">
+<span class="text-primary-container">[ HOME ]</span>
+<span class="text-on-surface-variant hover:text-primary transition-colors cursor-pointer">· PLAY</span>
+<span class="text-on-surface-variant hover:text-primary transition-colors cursor-pointer">· STATS</span>
+<span class="text-on-surface-variant hover:text-primary transition-colors cursor-pointer">· SETTINGS</span>
+</nav>
+<div class="flex items-center gap-3 font-label-caps text-[11px] text-on-surface-variant">
+<div class="flex items-center gap-1">
+<span>LV 12</span>
+<span class="text-outline">|</span>
+<div class="flex items-center gap-2">
+<span>XP 320/500</span>
+<div class="w-[60px] h-1 bg-surface-container-highest">
+<div class="h-full bg-primary-container w-[64%]"></div>
+</div>
+</div>
+</div>
+<span class="text-outline">|</span>
+<div class="flex items-center gap-1 text-info">
+<span class="w-2 h-2 rounded-full bg-info"></span>
+<span class="uppercase">Synced</span>
+</div>
+<span class="text-outline">|</span>
+<span class="text-outline">v0.20.0</span>
+</div>
+</header>
+<!-- MAIN CONTENT AREA -->
+<main class="flex-1 flex overflow-hidden">
+<!-- LEFT PANE (40%) -->
+<section class="w-[40%] border-r border-outline flex flex-col p-8 gap-8 overflow-y-auto custom-scrollbar">
+<div class="space-y-1">
+<p class="text-outline font-label-caps text-xs">▌play.tsx</p>
+<h2 class="font-headline text-[32px] font-bold text-on-surface leading-none uppercase">Ready to play?</h2>
+<p class="text-on-surface-variant font-label-caps text-sm tracking-wide">RESUME · 12:34 ELAPSED · DRAW-3</p>
+</div>
+<button class="w-full h-24 bg-primary-container text-surface font-headline text-[24px] font-bold flex items-center justify-center gap-4 hover:brightness-110 active:scale-[0.98] transition-all">
+<span class="material-symbols-outlined" style="font-variation-settings: 'FILL' 1;">play_arrow</span>
+        CONTINUE GAME
+      </button>
+<div class="grid grid-cols-2 gap-4">
+<button class="h-12 border border-outline bg-transparent text-on-surface font-label-caps text-sm hover:border-primary-container hover:text-primary-container transition-all flex items-center justify-center gap-2">
+<span class="material-symbols-outlined">add</span>
+          NEW GAME
+        </button>
+<button class="h-12 border border-outline bg-transparent text-on-surface font-label-caps text-sm hover:border-primary-container hover:text-primary-container transition-all flex items-center justify-center gap-2">
+<span class="material-symbols-outlined">refresh</span>
+          RESTART RUN
+        </button>
+</div>
+<div class="space-y-4">
+<p class="text-outline font-label-caps text-xs uppercase tracking-widest">Game Modes</p>
+<div class="grid grid-cols-3 gap-3">
+<!-- Zen -->
+<div class="aspect-square border border-outline flex flex-col items-center justify-center gap-2 hover:bg-surface-container transition-colors cursor-pointer group">
+<span class="material-symbols-outlined text-outline group-hover:text-primary-container">spa</span>
+<span class="font-label-caps text-[10px] uppercase">Zen</span>
+</div>
+<!-- Time Attack -->
+<div class="aspect-square border border-outline flex flex-col items-center justify-center gap-2 hover:bg-surface-container transition-colors cursor-pointer group">
+<span class="material-symbols-outlined text-outline group-hover:text-primary-container">timer</span>
+<span class="font-label-caps text-[10px] uppercase text-center">Time<br/>Attack</span>
+</div>
+<!-- Locked Challenge -->
+<div class="aspect-square bg-[#0d0d0d] border border-outline/30 flex flex-col items-center justify-center gap-2 relative opacity-60">
+<span class="material-symbols-outlined text-outline">lock</span>
+<span class="font-label-caps text-[10px] uppercase">Challenge</span>
+<div class="absolute -top-2 -right-2 bg-warning text-surface px-1 py-0.5 text-[8px] font-bold">LV 5</div>
+</div>
+</div>
+</div>
+<!-- VISUAL DECORATION (IMAGE PLACEHOLDER) -->
+<div class="mt-auto pt-8">
+<div class="w-full h-40 border border-outline overflow-hidden">
+<img class="w-full h-full object-cover opacity-40 grayscale hover:grayscale-0 transition-all duration-700" data-alt="A dark, high-contrast digital art piece showing an abstract terminal interface with glowing cyan scanlines and retro-futuristic grid patterns. The composition is geometric and minimalist, following a synthwave aesthetic with deep black backgrounds and crisp cyan light elements. The lighting is moody and artificial, suggesting a high-performance computer screen in a dimly lit server room. Professional, sharp-edged UI design style." src="https://lh3.googleusercontent.com/aida-public/AB6AXuAet8SrRWSacZfwd8ISRQdDC7CDGixBwRnPAVMmMcjbifq1jnHSzCGWgSSL6YPSRfCkLNWr91BxTzV4zigGjMBLlk7rCLo5I7X7F6ydinDrKJVqZkRbvHJeSo90BPANoQwZtzPvhKXVEA9C2DbBaj8KPR4ObCo24Mj25NXPvGNThOE-3BSpuU6MPC-hrUMPVCPJpZnJdI_OmSz8mT021vjTxFERN12S1PFOzXKmNUDleoTDIat-8UifyKmKg4eKilecrBW6sFqaBw"/>
+</div>
+</div>
+</section>
+<!-- CENTER PANE (30%) -->
+<section class="w-[30%] border-r border-outline flex flex-col p-8 gap-8 overflow-y-auto custom-scrollbar">
+<div class="space-y-1">
+<p class="text-outline font-label-caps text-xs">▌daily.json</p>
+<div class="flex items-center justify-between">
+<h3 class="font-headline text-[18px] font-bold text-on-surface">MAY 07 · 2026</h3>
+<span class="bg-warning/20 text-warning px-2 py-1 text-[10px] font-bold border border-warning/40">EXPIRES 11:42:30</span>
+</div>
+</div>
+<div class="bg-surface-container p-6 border border-outline space-y-4">
+<div class="space-y-1">
+<p class="text-on-surface-variant font-label-caps text-[10px] uppercase tracking-tighter">Current Seed</p>
+<p class="font-headline text-[24px] font-extrabold text-highlight-valid">#2024-127</p>
+</div>
+<button class="w-full py-3 bg-primary-container text-surface font-label-caps text-xs font-bold uppercase tracking-widest hover:brightness-110 active:scale-95 transition-all">
+          ▶ Attempt Today
+        </button>
+</div>
+<div class="space-y-3">
+<p class="text-outline font-label-caps text-xs uppercase tracking-widest">Global Standings</p>
+<div class="space-y-1 text-xs font-label-caps">
+<div class="flex justify-between py-2 border-b border-outline/30 text-highlight-valid">
+<span>01 │ swift_jaguar</span>
+<span>02:47</span>
+</div>
+<div class="flex justify-between py-2 border-b border-outline/30 text-on-surface-variant">
+<span>02 │ pixel_drifter</span>
+<span>03:12</span>
+</div>
+<div class="flex justify-between py-2 border-b border-outline/30 text-on-surface-variant">
+<span>03 │ null_ptr</span>
+<span>03:15</span>
+</div>
+<div class="flex justify-between py-2 border-b border-outline/30 text-on-surface-variant">
+<span>04 │ core_dump_88</span>
+<span>03:44</span>
+</div>
+<div class="flex justify-between py-2 text-primary-container bg-primary-container/10 px-2 -mx-2">
+<span>12 │ YOU (anon)</span>
+<span>--:--</span>
+</div>
+</div>
+</div>
+</section>
+<!-- RIGHT PANE (30%) -->
+<section class="w-[30%] flex flex-col p-8 gap-8 overflow-y-auto custom-scrollbar">
+<div class="space-y-1">
+<p class="text-outline font-label-caps text-xs">▌stats.log</p>
+</div>
+<div class="grid grid-cols-2 gap-4">
+<div class="border border-outline p-4 space-y-1">
+<p class="text-on-surface-variant text-[10px] uppercase">Games</p>
+<p class="font-hud-score text-[28px] text-on-surface">247</p>
+</div>
+<div class="border border-outline p-4 space-y-1 text-highlight-valid">
+<p class="text-on-surface-variant text-[10px] uppercase">Win Rate</p>
+<p class="font-hud-score text-[28px]">61%</p>
+</div>
+<div class="border border-outline p-4 space-y-1">
+<p class="text-on-surface-variant text-[10px] uppercase">Best Time</p>
+<p class="font-hud-score text-[28px]">01:54</p>
+</div>
+<div class="border border-outline p-4 space-y-1 text-primary-container">
+<p class="text-on-surface-variant text-[10px] uppercase">Streak</p>
+<p class="font-hud-score text-[28px]">7</p>
+</div>
+</div>
+<div class="space-y-3">
+<p class="text-outline font-label-caps text-xs uppercase tracking-widest">Achievements (8/19)</p>
+<div class="flex flex-wrap gap-2">
+<!-- Filled Cyan Dots -->
+<div class="w-3 h-3 bg-primary-container"></div>
+<div class="w-3 h-3 bg-primary-container"></div>
+<div class="w-3 h-3 bg-primary-container"></div>
+<div class="w-3 h-3 bg-primary-container"></div>
+<div class="w-3 h-3 bg-primary-container"></div>
+<div class="w-3 h-3 bg-primary-container"></div>
+<div class="w-3 h-3 bg-primary-container"></div>
+<div class="w-3 h-3 bg-primary-container"></div>
+<!-- Empty Dots -->
+<div class="w-3 h-3 border border-outline"></div>
+<div class="w-3 h-3 border border-outline"></div>
+<div class="w-3 h-3 border border-outline"></div>
+<div class="w-3 h-3 border border-outline"></div>
+<div class="w-3 h-3 border border-outline"></div>
+<div class="w-3 h-3 border border-outline"></div>
+<div class="w-3 h-3 border border-outline"></div>
+<div class="w-3 h-3 border border-outline"></div>
+<div class="w-3 h-3 border border-outline"></div>
+<div class="w-3 h-3 border border-outline"></div>
+<div class="w-3 h-3 border border-outline"></div>
+</div>
+</div>
+<div class="mt-auto border border-outline bg-surface-container p-4 flex items-center justify-between hover:border-primary-container transition-colors cursor-pointer group">
+<div class="flex items-center gap-3">
+<div class="w-10 h-10 bg-primary-container text-surface flex items-center justify-center font-bold text-lg">RS</div>
+<div class="space-y-0.5">
+<p class="text-on-surface font-bold text-xs">anonymous@local</p>
+<p class="text-on-surface-variant text-[10px]">Session: Active</p>
+</div>
+</div>
+<span class="material-symbols-outlined text-primary-container group-hover:translate-x-1 transition-transform">arrow_forward</span>
+</div>
+</section>
+</main>
+<!-- BOTTOM BAR (24px) -->
+<footer class="h-6 bg-surface-container border-t border-outline flex items-center justify-between px-4 text-[10px] font-label-caps">
+<div class="flex items-center gap-2">
+<span class="text-primary-container">▌ NORMAL</span>
+<span class="text-outline">│</span>
+<span class="text-on-surface-variant">~/rusty-solitaire/home</span>
+</div>
+<div class="flex items-center gap-4 text-on-surface-variant">
+<div class="flex items-center gap-1"><span class="text-primary-container">[SPACE]</span> play</div>
+<div class="flex items-center gap-1"><span class="text-primary-container">[D]</span> daily</div>
+<div class="flex items-center gap-1"><span class="text-primary-container">[S]</span> settings</div>
+<div class="flex items-center gap-1"><span class="text-primary-container">[?]</span> help</div>
+</div>
+<div class="text-outline">
+      2026-05-07 17:42 EDT
+    </div>
+</footer>
+<!-- GLOBAL SCANLINE EFFECT -->
+<div class="fixed inset-0 pointer-events-none z-[100] overflow-hidden opacity-10">
+<div class="absolute inset-0" style="background: repeating-linear-gradient(0deg, #151515, #151515 2px, #202020 4px);"></div>
+</div>
+</body></html>

docs/ui-mockups/home-menu-mobile.html

@@ -0,0 +1,225 @@
+<!DOCTYPE html>
+
+<html class="dark" lang="en"><head>
+<meta charset="utf-8"/>
+<meta content="width=device-width, initial-scale=1.0" name="viewport"/>
+<title>Rusty Solitaire - Main Menu</title>
+<script src="https://cdn.tailwindcss.com?plugins=forms,container-queries"></script>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&amp;family=Inter:wght@400&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<script id="tailwind-config">
+        tailwind.config = {
+            darkMode: "class",
+            theme: {
+                extend: {
+                    "colors": {
+                        "outline": "#505050",
+                        "suit-red-cb": "#6fc2ef",
+                        "suit-black": "#d0d0d0",
+                        "surface-container-high": "#272a2d",
+                        "primary-fixed": "#c4e7ff",
+                        "on-secondary-container": "#b2c86d",
+                        "secondary-fixed": "#d5ec8c",
+                        "on-tertiary-container": "#683476",
+                        "surface-tint": "#7ed0fe",
+                        "background": "#101417",
+                        "primary-container": "#6fc2ef",
+                        "inverse-surface": "#e0e3e6",
+                        "highlight-celebration": "#e1a3ee",
+                        "surface-container-low": "#181c1f",
+                        "on-surface": "#d0d0d0",
+                        "primary": "#a1dcff",
+                        "on-tertiary-fixed": "#340043",
+                        "secondary-container": "#435401",
+                        "inverse-primary": "#00668a",
+                        "tertiary-fixed": "#fbd7ff",
+                        "surface-bright": "#363a3d",
+                        "on-secondary-fixed-variant": "#3c4d00",
+                        "warning": "#ddb26f",
+                        "tertiary-container": "#e1a3ee",
+                        "suit-red": "#fb9fb1",
+                        "primary-fixed-dim": "#7ed0fe",
+                        "info": "#12cfc0",
+                        "on-primary-fixed": "#001e2c",
+                        "surface-container-lowest": "#0b0f11",
+                        "error": "#fb9fb1",
+                        "surface-variant": "#313538",
+                        "on-error": "#690005",
+                        "surface": "#151515",
+                        "surface-container": "#202020",
+                        "on-primary-container": "#004f6c",
+                        "inverse-on-surface": "#2d3134",
+                        "on-primary-fixed-variant": "#004c69",
+                        "on-secondary": "#293500",
+                        "error-container": "#93000a",
+                        "secondary": "#bad073",
+                        "tertiary": "#f7c3ff",
+                        "outline-variant": "#3f484e",
+                        "on-secondary-fixed": "#161e00",
+                        "secondary-fixed-dim": "#bad073",
+                        "surface-container-highest": "#313538",
+                        "on-surface-variant": "#bfc8cf",
+                        "tertiary-fixed-dim": "#f0b0fc",
+                        "on-tertiary-fixed-variant": "#653173",
+                        "on-error-container": "#ffdad6",
+                        "on-primary": "#003549",
+                        "on-background": "#e0e3e6",
+                        "surface-dim": "#101417",
+                        "on-tertiary": "#4c195b",
+                        "highlight-valid": "#acc267"
+                    },
+                    "borderRadius": {
+                        "DEFAULT": "0.125rem",
+                        "lg": "0.25rem",
+                        "xl": "0.5rem",
+                        "full": "0.75rem"
+                    },
+                    "spacing": {
+                        "margin-edge": "1rem",
+                        "touch-target-min": "48px",
+                        "stack-overlap": "2rem",
+                        "action-bar-height": "64px",
+                        "gutter-card": "0.375rem"
+                    },
+                    "fontFamily": {
+                        "hud-timer": ["JetBrains Mono"],
+                        "headline": ["JetBrains Mono"],
+                        "label-caps": ["JetBrains Mono"],
+                        "hud-score": ["JetBrains Mono"],
+                        "body-md": ["Inter"],
+                        "card-rank": ["JetBrains Mono"]
+                    },
+                    "fontSize": {
+                        "hud-timer": ["16px", { "lineHeight": "24px", "fontWeight": "400" }],
+                        "headline": ["28px", { "lineHeight": "32px", "letterSpacing": "-0.01em", "fontWeight": "700" }],
+                        "label-caps": ["12px", { "lineHeight": "16px", "letterSpacing": "0.08em", "fontWeight": "500" }],
+                        "hud-score": ["24px", { "lineHeight": "32px", "letterSpacing": "-0.02em", "fontWeight": "700" }],
+                        "body-md": ["16px", { "lineHeight": "24px", "fontWeight": "400" }],
+                        "card-rank": ["18px", { "lineHeight": "18px", "fontWeight": "700" }]
+                    }
+                }
+            }
+        }
+    </script>
+<style>
+        .scanline {
+            background: linear-gradient(to bottom, rgba(255,255,255,0), rgba(255,255,255,0) 50%, rgba(0,0,0,0.1) 50%, rgba(0,0,0,0.1));
+            background-size: 100% 4px;
+        }
+    </style>
+<style>
+    body {
+      min-height: max(884px, 100dvh);
+    }
+  </style>
+  </head>
+<body class="bg-surface text-on-surface font-hud-timer min-h-screen flex flex-col relative overflow-hidden">
+<!-- Subtle CRT scanline overlay -->
+<div class="absolute inset-0 pointer-events-none scanline opacity-20 z-0"></div>
+<!-- Status Bar Zone -->
+<div class="h-6 w-full flex justify-end items-center px-margin-edge pt-2 z-10 relative">
+<div class="w-2 h-2 rounded-full bg-info"></div>
+</div>
+<!-- Header -->
+<header class="px-margin-edge pt-4 pb-6 flex justify-between items-center z-10 relative">
+<div class="flex items-center gap-1">
+<span class="font-headline text-headline text-on-surface">▌RUSTY SOLITAIRE</span>
+<div class="w-2 h-6 bg-primary-container inline-block ml-1 animate-pulse"></div>
+</div>
+<div class="bg-surface-container px-3 py-1 flex items-center gap-2 border border-outline">
+<span class="font-label-caps text-label-caps text-on-surface">LV 12</span>
+<div class="w-2 h-2 rounded-full bg-highlight-celebration"></div>
+</div>
+</header>
+<!-- Main Content Canvas -->
+<main class="flex-1 px-margin-edge flex flex-col gap-8 z-10 relative pb-24 overflow-y-auto">
+<!-- XP Section -->
+<section class="flex flex-col gap-2">
+<div class="w-full h-1 bg-surface-container border border-outline relative">
+<div class="absolute top-0 left-0 h-full bg-primary-container w-[64%]"></div>
+</div>
+<div class="font-label-caps text-label-caps text-on-surface-variant text-right">
+                320 / 500 XP
+            </div>
+</section>
+<!-- Primary Action -->
+<section class="flex flex-col gap-2">
+<button class="w-full h-[56px] bg-primary-container text-surface flex items-center justify-center gap-2 hover:bg-surface-tint transition-colors duration-120">
+<span class="material-symbols-outlined" style="font-variation-settings: 'FILL' 1;">play_arrow</span>
+<span class="font-label-caps text-[14px] uppercase tracking-widest font-bold">PLAY</span>
+</button>
+<div class="font-label-caps text-label-caps text-on-surface-variant text-center">
+                RESUME LAST GAME · 12:34 ELAPSED
+            </div>
+</section>
+<!-- Daily Challenge Tile -->
+<section>
+<div class="bg-surface-container border border-outline p-4 flex justify-between items-center hover:bg-surface-container-high transition-colors cursor-pointer group">
+<div class="flex flex-col gap-2">
+<span class="font-label-caps text-label-caps text-primary">DAILY CHALLENGE</span>
+<span class="font-body-md text-body-md text-on-surface">DRAW-3 · SEED #2024-127</span>
+<div class="inline-flex">
+<span class="bg-surface px-2 py-0.5 border border-warning text-warning font-label-caps text-[10px]">EXPIRES 11:42:30</span>
+</div>
+</div>
+<span class="material-symbols-outlined text-primary group-hover:translate-x-1 transition-transform">chevron_right</span>
+</div>
+</section>
+<!-- Special Modes Grid -->
+<section class="flex flex-col gap-4">
+<h2 class="font-label-caps text-label-caps text-on-surface-variant">SPECIAL MODES</h2>
+<div class="grid grid-cols-3 gap-gutter-card">
+<!-- ZEN -->
+<button class="aspect-square bg-surface border border-outline flex flex-col items-center justify-center gap-2 hover:border-primary hover:text-primary transition-colors text-on-surface">
+<span class="material-symbols-outlined text-[32px]">self_improvement</span>
+<span class="font-label-caps text-label-caps">ZEN</span>
+</button>
+<!-- TIME ATTACK -->
+<button class="aspect-square bg-surface border border-outline flex flex-col items-center justify-center gap-2 hover:border-primary hover:text-primary transition-colors text-on-surface">
+<span class="material-symbols-outlined text-[32px]">timer</span>
+<span class="font-label-caps text-label-caps">TIME ATTACK</span>
+</button>
+<!-- CHALLENGE (Locked) -->
+<button class="aspect-square bg-[#0d0d0d] border border-surface-container-high flex flex-col items-center justify-center gap-2 text-on-surface-variant opacity-75 cursor-not-allowed relative">
+<span class="material-symbols-outlined text-[32px]">lock</span>
+<span class="font-label-caps text-label-caps">CHALLENGE</span>
+<div class="absolute top-2 right-2 bg-surface px-1 py-0.5 border border-warning text-warning font-label-caps text-[10px]">
+                        LV 5
+                    </div>
+</button>
+</div>
+</section>
+<!-- Secondary Nav Grid -->
+<section class="grid grid-cols-2 gap-y-4 gap-x-6 pb-6">
+<button class="flex items-center gap-3 h-[56px] border-l-2 border-outline pl-3 hover:border-primary hover:text-primary transition-colors text-on-surface justify-start">
+<span class="material-symbols-outlined">bar_chart</span>
+<span class="font-label-caps text-label-caps">STATS</span>
+</button>
+<button class="flex items-center gap-3 h-[56px] border-l-2 border-outline pl-3 hover:border-primary hover:text-primary transition-colors text-on-surface justify-start relative">
+<span class="material-symbols-outlined">emoji_events</span>
+<span class="font-label-caps text-label-caps">ACHIEVEMENTS</span>
+<div class="absolute right-2 top-1/2 -translate-y-1/2 w-2 h-2 rounded-full bg-highlight-celebration"></div>
+</button>
+<button class="flex items-center gap-3 h-[56px] border-l-2 border-outline pl-3 hover:border-primary hover:text-primary transition-colors text-on-surface justify-start">
+<span class="material-symbols-outlined">format_list_numbered</span>
+<span class="font-label-caps text-label-caps">LEADERBOARD</span>
+</button>
+<button class="flex items-center gap-3 h-[56px] border-l-2 border-outline pl-3 hover:border-primary hover:text-primary transition-colors text-on-surface justify-start">
+<span class="material-symbols-outlined">account_circle</span>
+<span class="font-label-caps text-label-caps">PROFILE</span>
+</button>
+</section>
+<!-- Footer Links -->
+<footer class="flex flex-col items-center gap-4 mt-auto">
+<div class="flex items-center gap-4 font-label-caps text-label-caps text-primary cursor-pointer hover:text-surface-tint">
+<span>SETTINGS</span>
+<span class="text-on-surface-variant">·</span>
+<span>HELP</span>
+</div>
+<div class="font-label-caps text-[10px] text-on-surface-variant text-center opacity-60">
+                v0.20.0 — TERMINAL THEME · BUILD 2026.05
+            </div>
+</footer>
+</main>
+</body></html>

docs/ui-mockups/leaderboard-mobile.html

@@ -0,0 +1,315 @@
+<!DOCTYPE html>
+
+<html class="dark" lang="en"><head>
+<meta charset="utf-8"/>
+<meta content="width=device-width, initial-scale=1.0" name="viewport"/>
+<title>Rusty Solitaire - Leaderboard</title>
+<script src="https://cdn.tailwindcss.com?plugins=forms,container-queries"></script>
+<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700;800&amp;family=Inter:wght@400;500&amp;family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<style>
+        body {
+            background-color: #151515;
+            color: #e0e3e6;
+            -webkit-font-smoothing: antialiased;
+            -moz-osx-font-smoothing: grayscale;
+        }
+        .material-symbols-outlined {
+            font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
+            vertical-align: middle;
+        }
+        .scanline-overlay {
+            background: linear-gradient(to bottom, rgba(21, 21, 21, 0) 50%, rgba(26, 26, 26, 0.2) 50%);
+            background-size: 100% 4px;
+            pointer-events: none;
+        }
+        .terminal-glow {
+            box-shadow: 0 0 10px rgba(111, 194, 239, 0.1);
+        }
+    </style>
+<script id="tailwind-config">
+        tailwind.config = {
+            darkMode: "class",
+            theme: {
+                extend: {
+                    "colors": {
+                        "outline": "#505050",
+                        "on-surface-variant": "#bfc8cf",
+                        "secondary-container": "#435401",
+                        "surface-container-lowest": "#0b0f11",
+                        "primary": "#a1dcff",
+                        "secondary-fixed": "#d5ec8c",
+                        "on-secondary-fixed": "#161e00",
+                        "on-error": "#690005",
+                        "inverse-primary": "#00668a",
+                        "surface-container": "#202020",
+                        "highlight-valid": "#acc267",
+                        "suit-black": "#d0d0d0",
+                        "on-secondary-fixed-variant": "#3c4d00",
+                        "on-primary-fixed": "#001e2c",
+                        "on-tertiary-fixed-variant": "#653173",
+                        "primary-fixed": "#c4e7ff",
+                        "inverse-on-surface": "#2d3134",
+                        "secondary-fixed-dim": "#bad073",
+                        "on-secondary": "#293500",
+                        "on-surface": "#e0e3e6",
+                        "on-tertiary-container": "#683476",
+                        "secondary": "#bad073",
+                        "surface-bright": "#363a3d",
+                        "tertiary-container": "#e1a3ee",
+                        "surface-variant": "#313538",
+                        "suit-red": "#fb9fb1",
+                        "primary-fixed-dim": "#7ed0fe",
+                        "surface-container-low": "#181c1f",
+                        "surface": "#151515",
+                        "suit-red-cb": "#6fc2ef",
+                        "on-primary": "#003549",
+                        "primary-container": "#6fc2ef",
+                        "on-background": "#e0e3e6",
+                        "tertiary": "#f7c3ff",
+                        "surface-container-highest": "#313538",
+                        "tertiary-fixed-dim": "#f0b0fc",
+                        "tertiary-fixed": "#fbd7ff",
+                        "info": "#12cfc0",
+                        "error": "#fb9fb1",
+                        "warning": "#ddb26f",
+                        "on-primary-container": "#004f6c",
+                        "surface-container-high": "#272a2d",
+                        "inverse-surface": "#e0e3e6",
+                        "error-container": "#93000a",
+                        "on-tertiary-fixed": "#340043",
+                        "surface-tint": "#7ed0fe",
+                        "on-tertiary": "#4c195b",
+                        "background": "#101417",
+                        "on-error-container": "#ffdad6",
+                        "on-secondary-container": "#b2c86d",
+                        "outline-variant": "#3f484e",
+                        "highlight-celebration": "#e1a3ee",
+                        "surface-dim": "#101417",
+                        "on-primary-fixed-variant": "#004c69"
+                    },
+                    "borderRadius": {
+                        "DEFAULT": "0.125rem",
+                        "lg": "0.25rem",
+                        "xl": "0.5rem",
+                        "full": "0.75rem"
+                    },
+                    "spacing": {
+                        "touch-target-min": "48px",
+                        "action-bar-height": "64px",
+                        "stack-overlap": "2rem",
+                        "gutter-card": "0.375rem",
+                        "margin-edge": "1rem"
+                    },
+                    "fontFamily": {
+                        "card-rank": ["JetBrains Mono"],
+                        "body-md": ["Inter"],
+                        "headline": ["JetBrains Mono"],
+                        "label-caps": ["JetBrains Mono"],
+                        "hud-timer": ["JetBrains Mono"],
+                        "hud-score": ["JetBrains Mono"]
+                    },
+                    "fontSize": {
+                        "card-rank": ["18px", {"lineHeight": "18px", "fontWeight": "700"}],
+                        "body-md": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+                        "headline": ["28px", {"lineHeight": "32px", "letterSpacing": "-0.01em", "fontWeight": "700"}],
+                        "label-caps": ["12px", {"lineHeight": "16px", "letterSpacing": "0.08em", "fontWeight": "500"}],
+                        "hud-timer": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+                        "hud-score": ["24px", {"lineHeight": "32px", "letterSpacing": "-0.02em", "fontWeight": "700"}]
+                    }
+                },
+            },
+        }
+    </script>
+<style>
+    body {
+      min-height: max(884px, 100dvh);
+    }
+  </style>
+  </head>
+<body class="font-body-md overflow-hidden h-[844px] w-[390px] mx-auto relative border-x border-outline/20">
+<div class="scanline-overlay absolute inset-0 z-0"></div>
+<!-- Top AppBar (Identity Anchor) -->
+<header class="fixed top-0 w-full h-action-bar-height z-50 flex items-center px-margin-edge justify-between bg-surface dark:bg-surface text-primary dark:text-primary border-b border-outline dark:border-outline">
+<div class="flex items-center gap-2">
+<span class="material-symbols-outlined text-primary">terminal</span>
+<h1 class="font-headline text-headline text-primary dark:text-primary uppercase tracking-tighter">Rusty Solitaire</h1>
+</div>
+<div class="flex items-center gap-4">
+<span class="material-symbols-outlined text-on-surface-variant hover:bg-surface-variant transition-colors duration-120 p-2 rounded-lg cursor-pointer">sync</span>
+</div>
+</header>
+<main class="pt-[64px] h-[calc(100%-64px)] flex flex-col z-10 relative">
+<!-- Pseudo Status Bar -->
+<div class="h-[32px] bg-surface-container flex items-center justify-between px-4 font-label-caps text-[10px] tracking-tight">
+<div class="text-[#a0a0a0]">▌leaderboard.tsx</div>
+<div class="flex items-center gap-2">
+<span class="flex items-center gap-1">
+<span class="w-1.5 h-1.5 rounded-full bg-info"></span>
+<span class="text-on-surface-variant">SYNCED</span>
+</span>
+<span class="text-outline">v0.20.0</span>
+</div>
+</div>
+<!-- Tab Strip -->
+<nav class="h-[40px] bg-[#1a1a1a] border-b border-[#353535] flex items-center">
+<div class="flex-1 flex flex-col items-center justify-center relative">
+<span class="font-label-caps text-[11px] text-[#6fc2ef]">[ TODAY ]</span>
+<div class="absolute bottom-0 w-full h-[2px] bg-[#6fc2ef]"></div>
+</div>
+<div class="flex-1 flex items-center justify-center">
+<span class="font-label-caps text-[11px] text-[#a0a0a0]">WEEK</span>
+</div>
+<div class="flex-1 flex items-center justify-center">
+<span class="font-label-caps text-[11px] text-[#a0a0a0]">ALL-TIME</span>
+</div>
+<div class="flex-1 flex items-center justify-center">
+<span class="font-label-caps text-[11px] text-[#a0a0a0]">FRIENDS</span>
+</div>
+</nav>
+<div class="flex-1 overflow-y-auto px-margin-edge pt-4 space-y-4 pb-[88px]">
+<!-- Hero Podium Card -->
+<section class="h-[120px] bg-surface-container border border-[#353535] rounded-lg p-2 flex flex-col justify-between">
+<div class="font-label-caps text-[10px] text-[#a0a0a0]">TOP 3 · TODAY</div>
+<div class="flex gap-2 items-end justify-between flex-1 mt-1">
+<!-- 2nd -->
+<div class="flex-1 border border-[#a0a0a0] h-full rounded flex flex-col items-center justify-center relative py-1">
+<span class="font-card-rank text-[16px] text-[#a0a0a0]">02</span>
+<span class="text-[9px] font-mono text-[#d0d0d0] truncate w-full text-center px-1">base16_fan</span>
+<span class="text-[10px] font-mono text-[#a0a0a0]">03:12</span>
+</div>
+<!-- 1st -->
+<div class="flex-[1.2] border border-warning h-[110%] mb-[-2px] rounded-lg bg-surface flex flex-col items-center justify-center relative py-1 terminal-glow">
+<span class="absolute top-1 right-1 text-warning material-symbols-outlined text-[14px]">star</span>
+<span class="font-card-rank text-[24px] text-warning leading-none">01</span>
+<span class="text-[11px] font-mono text-[#d0d0d0] font-bold truncate w-full text-center px-1">swift_jaguar</span>
+<span class="text-[12px] font-mono text-[#d0d0d0]">02:47</span>
+</div>
+<!-- 3rd -->
+<div class="flex-1 border border-[#7a5d3b] h-full rounded flex flex-col items-center justify-center relative py-1">
+<span class="font-card-rank text-[16px] text-[#7a5d3b]">03</span>
+<span class="text-[9px] font-mono text-[#d0d0d0] truncate w-full text-center px-1">cli_player</span>
+<span class="text-[10px] font-mono text-[#a0a0a0]">03:54</span>
+</div>
+</div>
+</section>
+<!-- Search/Filter Row -->
+<div class="flex items-center gap-2 h-[40px]">
+<div class="px-3 h-8 border border-outline rounded flex items-center justify-center bg-surface-container-low">
+<span class="font-label-caps text-[10px] text-[#6fc2ef]">[ ALL TIMES ]</span>
+</div>
+<div class="flex-1 h-8 border border-outline rounded flex items-center px-2 bg-surface gap-2">
+<span class="font-mono text-[12px] text-outline">/ search players</span>
+</div>
+</div>
+<!-- Leaderboard List -->
+<div class="space-y-0.5 font-mono text-[12px]">
+<!-- Header -->
+<div class="flex justify-between px-2 pb-1 border-b border-outline/20 text-outline text-[10px] uppercase font-bold tracking-widest">
+<span>Rank &amp; User</span>
+<span>Time</span>
+</div>
+<!-- Rank 04 -->
+<div class="flex items-center justify-between px-2 py-2 border-b border-[#353535]">
+<div class="flex gap-4">
+<span class="text-[#a0a0a0] w-8">004</span>
+<span class="text-on-surface">tablejockey</span>
+</div>
+<span class="text-[#a0a0a0]">04:01</span>
+</div>
+<!-- Rank 05 -->
+<div class="flex items-center justify-between px-2 py-2 border-b border-[#353535]">
+<div class="flex gap-4">
+<span class="text-[#a0a0a0] w-8">005</span>
+<span class="text-on-surface">vim_motions</span>
+</div>
+<span class="text-[#a0a0a0]">04:05</span>
+</div>
+<!-- Rank 06 -->
+<div class="flex items-center justify-between px-2 py-2 border-b border-[#353535]">
+<div class="flex gap-4">
+<span class="text-[#a0a0a0] w-8">006</span>
+<span class="text-on-surface">tmux_lover</span>
+</div>
+<span class="text-[#a0a0a0]">04:18</span>
+</div>
+<!-- Rank 07 -->
+<div class="flex items-center justify-between px-2 py-2 border-b border-[#353535]">
+<div class="flex gap-4">
+<span class="text-[#a0a0a0] w-8">007</span>
+<span class="text-on-surface">nvim_dotfiles</span>
+</div>
+<span class="text-[#a0a0a0]">04:23</span>
+</div>
+<!-- Rank 08 -->
+<div class="flex items-center justify-between px-2 py-2 border-b border-[#353535]">
+<div class="flex gap-4">
+<span class="text-[#a0a0a0] w-8">008</span>
+<span class="text-on-surface">dark_theme</span>
+</div>
+<span class="text-[#a0a0a0]">04:31</span>
+</div>
+<!-- Spacer for truncated view -->
+<div class="flex justify-center py-2 text-outline/30 tracking-[1em]">...</div>
+<!-- YOU (Rank 17) -->
+<div class="flex items-center justify-between px-2 py-2 bg-[#1f3a4a]/30 border border-[#6fc2ef]/40 rounded-sm">
+<div class="flex gap-4">
+<span class="text-[#6fc2ef] w-8 font-bold">▶ 017</span>
+<span class="text-[#6fc2ef] font-bold">anonymous (YOU)</span>
+</div>
+<span class="text-[#6fc2ef] font-bold">04:12</span>
+</div>
+<!-- Rank 18 -->
+<div class="flex items-center justify-between px-2 py-2 border-b border-[#353535]">
+<div class="flex gap-4">
+<span class="text-[#a0a0a0] w-8">018</span>
+<span class="text-on-surface">bash_brawler</span>
+</div>
+<span class="text-[#a0a0a0]">05:01</span>
+</div>
+<!-- Rank 19 -->
+<div class="flex items-center justify-between px-2 py-2 border-b border-[#353535]">
+<div class="flex gap-4">
+<span class="text-[#a0a0a0] w-8">019</span>
+<span class="text-on-surface">curl_master</span>
+</div>
+<span class="text-[#a0a0a0]">05:14</span>
+</div>
+</div>
+</div>
+<!-- CLI Style Footer -->
+<footer class="fixed bottom-0 w-full h-[24px] bg-[#202020] border-t border-[#353535] px-2 flex items-center justify-between font-mono text-[9px] z-50">
+<div class="text-[#a0a0a0]">
+<span class="text-info font-bold">▌</span> NORMAL │ leaderboard
+            </div>
+<div class="text-[#a0a0a0] flex gap-3">
+<span>[1-4] tab</span>
+<span>[/] search</span>
+<span>[ESC] back</span>
+</div>
+</footer>
+<!-- Shared Component: BottomNavBar -->
+<nav class="fixed bottom-[24px] w-full h-action-bar-height z-50 flex justify-around items-center bg-surface-container dark:bg-surface-container border-t border-outline dark:border-outline">
+<button class="flex flex-col items-center justify-center text-on-surface-variant dark:text-on-surface-variant p-2 hover:text-primary dark:hover:text-primary transition-all duration-120 ease-linear active:bg-surface-container-highest">
+<span class="material-symbols-outlined">playing_cards</span>
+<span class="font-label-caps text-label-caps">DEAL [F1]</span>
+</button>
+<button class="flex flex-col items-center justify-center text-on-surface-variant dark:text-on-surface-variant p-2 hover:text-primary dark:hover:text-primary transition-all duration-120 ease-linear active:bg-surface-container-highest">
+<span class="material-symbols-outlined">undo</span>
+<span class="font-label-caps text-label-caps">UNDO [Z]</span>
+</button>
+<button class="flex flex-col items-center justify-center text-on-surface-variant dark:text-on-surface-variant p-2 hover:text-primary dark:hover:text-primary transition-all duration-120 ease-linear active:bg-surface-container-highest">
+<span class="material-symbols-outlined">lightbulb</span>
+<span class="font-label-caps text-label-caps">HINT [H]</span>
+</button>
+<button class="flex flex-col items-center justify-center bg-primary-container dark:bg-primary-container text-on-primary-container dark:text-on-primary-container rounded-none p-2 transition-all duration-120 ease-linear active:bg-surface-container-highest">
+<span class="material-symbols-outlined">analytics</span>
+<span class="font-label-caps text-label-caps">STATS [S]</span>
+</button>
+<button class="flex flex-col items-center justify-center text-on-surface-variant dark:text-on-surface-variant p-2 hover:text-primary dark:hover:text-primary transition-all duration-120 ease-linear active:bg-surface-container-highest">
+<span class="material-symbols-outlined">menu</span>
+<span class="font-label-caps text-label-caps">MENU [ESC]</span>
+</button>
+</nav>
+</main>
+</body></html>

docs/ui-mockups/level-up-mobile.html

@@ -0,0 +1,259 @@
+<!DOCTYPE html>
+
+<html class="dark" lang="en"><head>
+<meta charset="utf-8"/>
+<meta content="width=device-width, initial-scale=1.0" name="viewport"/>
+<title>ROOT@SOLITAIRE:~ | LEVEL UP</title>
+<script src="https://cdn.tailwindcss.com?plugins=forms,container-queries"></script>
+<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&amp;family=Inter:wght@400;500&amp;family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<style>
+        .material-symbols-outlined {
+            font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
+        }
+        .scanline-overlay {
+            background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.06), rgba(0, 255, 0, 0.02), rgba(0, 0, 255, 0.06));
+            background-size: 100% 2px, 3px 100%;
+            pointer-events: none;
+        }
+        .card-glow {
+            box-shadow: 0 0 24px rgba(225, 163, 238, 0.25);
+        }
+    </style>
+<script id="tailwind-config">
+        tailwind.config = {
+            darkMode: "class",
+            theme: {
+                extend: {
+                    "colors": {
+                        "tertiary-fixed": "#fbd7ff",
+                        "secondary-container": "#435401",
+                        "on-tertiary-fixed": "#340043",
+                        "inverse-surface": "#e0e3e6",
+                        "tertiary-container": "#e1a3ee",
+                        "background": "#101417",
+                        "on-primary": "#003549",
+                        "info": "#12cfc0",
+                        "surface-container-highest": "#313538",
+                        "secondary-fixed": "#d5ec8c",
+                        "secondary-fixed-dim": "#bad073",
+                        "on-surface-variant": "#bfc8cf",
+                        "on-secondary": "#293500",
+                        "on-tertiary-fixed-variant": "#653173",
+                        "surface-container-low": "#181c1f",
+                        "surface-container-high": "#272a2d",
+                        "secondary": "#bad073",
+                        "outline-variant": "#3f484e",
+                        "on-surface": "#e0e3e6",
+                        "surface-tint": "#7ed0fe",
+                        "on-tertiary": "#4c195b",
+                        "on-secondary-fixed": "#161e00",
+                        "primary-fixed": "#c4e7ff",
+                        "on-tertiary-container": "#683476",
+                        "on-secondary-container": "#b2c86d",
+                        "surface-container-lowest": "#0b0f11",
+                        "inverse-primary": "#00668a",
+                        "primary-container": "#6fc2ef",
+                        "surface-container": "#1c2023",
+                        "on-background": "#e0e3e6",
+                        "suit-red-cb": "#6fc2ef",
+                        "surface-dim": "#101417",
+                        "on-primary-fixed-variant": "#004c69",
+                        "tertiary": "#f7c3ff",
+                        "on-secondary-fixed-variant": "#3c4d00",
+                        "highlight-celebration": "#e1a3ee",
+                        "on-primary-fixed": "#001e2c",
+                        "primary-fixed-dim": "#7ed0fe",
+                        "tertiary-fixed-dim": "#f0b0fc",
+                        "inverse-on-surface": "#2d3134",
+                        "error": "#fb9fb1",
+                        "error-container": "#93000a",
+                        "surface-bright": "#363a3d",
+                        "on-primary-container": "#004f6c",
+                        "warning": "#ddb26f",
+                        "surface": "#151515",
+                        "suit-black": "#d0d0d0",
+                        "highlight-valid": "#acc267",
+                        "outline": "#505050",
+                        "surface-variant": "#313538",
+                        "on-error-container": "#ffdad6",
+                        "on-error": "#690005",
+                        "primary": "#a1dcff",
+                        "suit-red": "#fb9fb1"
+                    },
+                    "borderRadius": {
+                        "DEFAULT": "0.125rem",
+                        "lg": "0.25rem",
+                        "xl": "0.5rem",
+                        "full": "0.75rem"
+                    },
+                    "spacing": {
+                        "gutter-card": "0.375rem",
+                        "action-bar-height": "64px",
+                        "stack-overlap": "2rem",
+                        "margin-edge": "1rem"
+                    },
+                    "fontFamily": {
+                        "card-rank": ["JetBrains Mono"],
+                        "hud-score": ["JetBrains Mono"],
+                        "body-md": ["Inter"],
+                        "headline": ["JetBrains Mono"],
+                        "label-caps": ["JetBrains Mono"],
+                        "hud-timer": ["JetBrains Mono"]
+                    },
+                    "fontSize": {
+                        "card-rank": ["18px", {"lineHeight": "18px", "fontWeight": "700"}],
+                        "hud-score": ["24px", {"lineHeight": "32px", "letterSpacing": "-0.02em", "fontWeight": "700"}],
+                        "body-md": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+                        "headline": ["28px", {"lineHeight": "32px", "letterSpacing": "-0.01em", "fontWeight": "700"}],
+                        "label-caps": ["12px", {"lineHeight": "16px", "letterSpacing": "0.08em", "fontWeight": "500"}],
+                        "hud-timer": ["16px", {"lineHeight": "24px", "fontWeight": "400"}]
+                    }
+                },
+            },
+        }
+    </script>
+<style>
+    body {
+      min-height: max(884px, 100dvh);
+    }
+  </style>
+  </head>
+<body class="bg-background text-on-background font-body-md overflow-hidden h-screen select-none">
+<!-- Top App Bar -->
+<header class="fixed top-0 w-full z-50 flex justify-between items-center px-margin-edge h-action-bar-height bg-background dark:bg-background border-b border-outline-variant dark:border-outline-variant">
+<div class="font-headline text-headline text-primary dark:text-primary uppercase tracking-tighter">ROOT@SOLITAIRE:~</div>
+<div class="flex gap-4">
+<span class="material-symbols-outlined text-primary" data-icon="memory">memory</span>
+<span class="material-symbols-outlined text-primary" data-icon="settings_ethernet">settings_ethernet</span>
+<span class="material-symbols-outlined text-primary" data-icon="wifi_tethering">wifi_tethering</span>
+</div>
+</header>
+<!-- Main Tableau (Dimmed Background) -->
+<main class="pt-24 px-4 flex flex-col gap-8 opacity-20 filter grayscale">
+<!-- HUD Chips -->
+<div class="flex justify-between items-center">
+<div class="bg-surface-container p-3 flex flex-col">
+<span class="font-label-caps text-label-caps text-on-surface-variant uppercase">SCORE</span>
+<span class="font-hud-score text-hud-score text-primary">04,820</span>
+</div>
+<div class="bg-surface-container p-3 flex flex-col items-end">
+<span class="font-label-caps text-label-caps text-on-surface-variant uppercase">TIMER</span>
+<span class="font-hud-timer text-hud-timer text-on-surface">04:12</span>
+</div>
+</div>
+<!-- Foundation & Stock -->
+<div class="flex gap-gutter-card justify-between">
+<div class="flex gap-gutter-card">
+<div class="w-[64px] h-[88px] border border-dashed border-outline rounded-DEFAULT"></div>
+<div class="w-[64px] h-[88px] bg-surface border border-outline rounded-DEFAULT relative overflow-hidden">
+<div class="absolute inset-0 scanline-overlay"></div>
+<div class="absolute top-2 left-2 w-3 h-4 bg-suit-red-cb"></div>
+<div class="absolute bottom-2 right-2 font-card-rank text-[12px] text-on-surface">▌RS</div>
+</div>
+</div>
+<div class="flex gap-gutter-card">
+<div class="w-[64px] h-[88px] border border-outline rounded-DEFAULT bg-surface"></div>
+<div class="w-[64px] h-[88px] border border-outline rounded-DEFAULT bg-surface"></div>
+<div class="w-[64px] h-[88px] border border-outline rounded-DEFAULT bg-surface"></div>
+<div class="w-[64px] h-[88px] border border-outline rounded-DEFAULT bg-surface"></div>
+</div>
+</div>
+<!-- Cascades -->
+<div class="grid grid-cols-7 gap-gutter-card">
+<div class="h-24 border border-dashed border-outline rounded-DEFAULT"></div>
+<div class="h-24 border border-dashed border-outline rounded-DEFAULT"></div>
+<div class="h-24 border border-dashed border-outline rounded-DEFAULT"></div>
+<div class="h-24 border border-dashed border-outline rounded-DEFAULT"></div>
+<div class="h-24 border border-dashed border-outline rounded-DEFAULT"></div>
+<div class="h-24 border border-dashed border-outline rounded-DEFAULT"></div>
+<div class="h-24 border border-dashed border-outline rounded-DEFAULT"></div>
+</div>
+</main>
+<!-- CELEBRATION OVERLAY SCREEM -->
+<div class="fixed inset-0 z-[100] flex items-center justify-center bg-surface/95 backdrop-blur-sm">
+<!-- Celebration Card -->
+<div class="w-[340px] h-[480px] bg-[#202020] border border-highlight-celebration rounded-xl card-glow flex flex-col overflow-hidden relative">
+<!-- Title Bar -->
+<div class="h-[28px] bg-[#1a1a1a] border-b border-outline flex items-center px-4 shrink-0">
+<span class="text-primary mr-1">▌</span>
+<span class="font-headline text-[12px] text-[#a0a0a0]">level-up.tsx</span>
+</div>
+<!-- Content Area -->
+<div class="flex-grow p-6 flex flex-col">
+<!-- Hero Band -->
+<div class="text-center mb-6">
+<div class="font-headline text-[14px] text-highlight-celebration uppercase tracking-[0.08em] mb-2">▲ LEVEL UP</div>
+<div class="flex items-baseline justify-center gap-2">
+<span class="font-headline font-bold text-[96px] text-suit-black leading-none tracking-tighter">13</span>
+<div class="flex flex-col items-start">
+<span class="font-label-caps text-[11px] text-outline uppercase">FROM 12</span>
+</div>
+</div>
+<div class="mt-2 font-headline font-medium text-[13px] text-highlight-celebration tracking-[0.08em]">█ NEW PERKS UNLOCKED</div>
+</div>
+<!-- Perks List -->
+<div class="space-y-2 mb-6">
+<!-- Item 1 -->
+<div class="h-[48px] bg-[#1a1a1a] rounded-[4px] px-3 flex items-center justify-between">
+<span class="font-headline text-[13px] text-suit-black">▢ +1 daily challenge slot</span>
+<span class="bg-highlight-celebration/10 text-highlight-celebration px-2 py-0.5 rounded-full font-label-caps text-[10px] border border-highlight-celebration/30">NEW</span>
+</div>
+<!-- Item 2 -->
+<div class="h-[48px] bg-[#1a1a1a] rounded-[4px] px-3 flex items-center justify-between">
+<span class="font-headline text-[13px] text-suit-black">▢ Background: Forest</span>
+<span class="bg-highlight-valid/10 text-highlight-valid px-2 py-0.5 rounded-full font-label-caps text-[10px] border border-highlight-valid/30">UNLOCKED</span>
+</div>
+<!-- Item 3 -->
+<div class="h-[48px] bg-[#1a1a1a] rounded-[4px] px-3 flex items-center justify-between">
+<span class="font-headline text-[13px] text-suit-black">▢ Card-back: Stripes</span>
+<span class="bg-highlight-valid/10 text-highlight-valid px-2 py-0.5 rounded-full font-label-caps text-[10px] border border-highlight-valid/30">UNLOCKED</span>
+</div>
+</div>
+<!-- XP Recap -->
+<div class="h-[48px] bg-[#1a1a1a] rounded-[4px] px-4 flex items-center justify-between mt-auto">
+<span class="font-headline text-[12px] text-[#a0a0a0]">XP</span>
+<span class="font-headline font-bold text-[14px] text-highlight-valid uppercase">+200 XP THIS LEVEL</span>
+<div class="w-[60px] h-[4px] bg-outline-variant rounded-full overflow-hidden">
+<div class="w-[0%] h-full bg-suit-red-cb"></div>
+</div>
+</div>
+</div>
+<!-- Action Button -->
+<button class="h-[56px] w-full bg-suit-red-cb flex items-center justify-center gap-2 hover:opacity-90 active:opacity-75 transition-opacity">
+<span class="font-headline font-bold text-[14px] text-background tracking-wider">▶ CONTINUE</span>
+</button>
+<!-- Scanline layer inside card -->
+<div class="absolute inset-0 scanline-overlay opacity-20 pointer-events-none"></div>
+</div>
+<!-- Caption -->
+<div class="absolute bottom-8 w-full text-center">
+<span class="font-body-md text-[11px] text-[#a0a0a0] uppercase tracking-widest opacity-60">Tap anywhere to dismiss</span>
+</div>
+</div>
+<!-- Bottom Nav Bar -->
+<nav class="fixed bottom-0 w-full z-50 flex justify-between items-center h-action-bar-height bg-surface-container dark:bg-surface-container border-t border-outline dark:border-outline">
+<div class="flex flex-col items-center justify-center bg-primary text-background p-2 w-1/5 h-full transition-colors font-label-caps text-label-caps uppercase tracking-widest">
+<span class="material-symbols-outlined" data-icon="videogame_asset">videogame_asset</span>
+<span>NORMAL</span>
+</div>
+<div class="flex flex-col items-center justify-center text-on-surface-variant p-2 w-1/5 h-full hover:text-primary transition-colors font-label-caps text-label-caps uppercase tracking-widest">
+<span class="material-symbols-outlined" data-icon="edit">edit</span>
+<span>INSERT</span>
+</div>
+<div class="flex flex-col items-center justify-center text-on-surface-variant p-2 w-1/5 h-full hover:text-primary transition-colors font-label-caps text-label-caps uppercase tracking-widest">
+<span class="material-symbols-outlined" data-icon="visibility">visibility</span>
+<span>VISUAL</span>
+</div>
+<div class="flex flex-col items-center justify-center text-on-surface-variant p-2 w-1/5 h-full hover:text-primary transition-colors font-label-caps text-label-caps uppercase tracking-widest">
+<span class="material-symbols-outlined" data-icon="auto_fix_high">auto_fix_high</span>
+<span>SOLVE</span>
+</div>
+<div class="flex flex-col items-center justify-center text-on-surface-variant p-2 w-1/5 h-full hover:text-primary transition-colors font-label-caps text-label-caps uppercase tracking-widest">
+<span class="material-symbols-outlined" data-icon="power_settings_new">power_settings_new</span>
+<span>QUIT</span>
+</div>
+</nav>
+<!-- Persistent Background Overlay (CRT Effect) -->
+<div class="fixed inset-0 pointer-events-none z-[200] scanline-overlay opacity-30"></div>
+</body></html>

docs/ui-mockups/onboarding-draw-mobile.html

@@ -0,0 +1,206 @@
+<!DOCTYPE html>
+
+<html class="dark" lang="en"><head>
+<meta charset="utf-8"/>
+<meta content="width=device-width, initial-scale=1.0" name="viewport"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700;800&amp;family=Inter:wght@400;500&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<script src="https://cdn.tailwindcss.com?plugins=forms,container-queries"></script>
+<script id="tailwind-config">
+    tailwind.config = {
+      darkMode: "class",
+      theme: {
+        extend: {
+          "colors": {
+                  "tertiary": "#f7c3ff",
+                  "surface": "#151515",
+                  "surface-container-lowest": "#0b0f11",
+                  "surface-variant": "#313538",
+                  "surface-tint": "#7ed0fe",
+                  "primary": "#a1dcff",
+                  "on-tertiary-fixed-variant": "#653173",
+                  "on-error-container": "#ffdad6",
+                  "on-tertiary-container": "#683476",
+                  "secondary": "#bad073",
+                  "surface-dim": "#101417",
+                  "inverse-on-surface": "#2d3134",
+                  "on-tertiary": "#4c195b",
+                  "surface-container-high": "#272a2d",
+                  "on-primary-fixed-variant": "#004c69",
+                  "surface-container": "#202020",
+                  "highlight-celebration": "#e1a3ee",
+                  "background": "#101417",
+                  "suit-red": "#fb9fb1",
+                  "on-secondary-container": "#b2c86d",
+                  "inverse-surface": "#e0e3e6",
+                  "error": "#fb9fb1",
+                  "on-surface": "#d0d0d0",
+                  "info": "#12cfc0",
+                  "secondary-container": "#435401",
+                  "tertiary-fixed-dim": "#f0b0fc",
+                  "surface-bright": "#363a3d",
+                  "outline-variant": "#3f484e",
+                  "on-secondary-fixed-variant": "#3c4d00",
+                  "warning": "#ddb26f",
+                  "surface-container-highest": "#313538",
+                  "secondary-fixed": "#d5ec8c",
+                  "highlight-valid": "#acc267",
+                  "secondary-fixed-dim": "#bad073",
+                  "tertiary-container": "#e1a3ee",
+                  "suit-red-cb": "#6fc2ef",
+                  "on-error": "#690005",
+                  "on-primary-container": "#004f6c",
+                  "suit-black": "#d0d0d0",
+                  "inverse-primary": "#00668a",
+                  "surface-container-low": "#181c1f",
+                  "on-primary-fixed": "#001e2c",
+                  "on-secondary": "#293500",
+                  "primary-fixed": "#c4e7ff",
+                  "on-tertiary-fixed": "#340043",
+                  "outline": "#505050",
+                  "error-container": "#93000a",
+                  "tertiary-fixed": "#fbd7ff",
+                  "primary-container": "#6fc2ef",
+                  "on-background": "#e0e3e6",
+                  "on-primary": "#003549",
+                  "on-surface-variant": "#bfc8cf",
+                  "on-secondary-fixed": "#161e00",
+                  "primary-fixed-dim": "#7ed0fe"
+          },
+          "borderRadius": {
+                  "DEFAULT": "0.125rem",
+                  "lg": "0.25rem",
+                  "xl": "0.5rem",
+                  "full": "0.75rem"
+          },
+          "spacing": {
+                  "margin-edge": "1rem",
+                  "gutter-card": "0.375rem",
+                  "touch-target-min": "48dp",
+                  "stack-overlap": "2rem",
+                  "action-bar-height": "64px"
+          },
+          "fontFamily": {
+                  "card-rank": ["JetBrains Mono"],
+                  "hud-timer": ["JetBrains Mono"],
+                  "body-md": ["Inter"],
+                  "headline": ["JetBrains Mono"],
+                  "label-caps": ["JetBrains Mono"],
+                  "hud-score": ["JetBrains Mono"]
+          },
+          "fontSize": {
+                  "card-rank": ["18px", {"lineHeight": "18px", "fontWeight": "700"}],
+                  "hud-timer": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+                  "body-md": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+                  "headline": ["28px", {"lineHeight": "32px", "letterSpacing": "-0.01em", "fontWeight": "700"}],
+                  "label-caps": ["12px", {"lineHeight": "16px", "letterSpacing": "0.08em", "fontWeight": "500"}],
+                  "hud-score": ["24px", {"lineHeight": "32px", "letterSpacing": "-0.02em", "fontWeight": "700"}]
+          }
+        },
+      },
+    }
+  </script>
+<style>
+    .material-symbols-outlined {
+      font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
+    }
+    body {
+      background-color: #151515;
+      color: #d0d0d0;
+      -webkit-font-smoothing: antialiased;
+    }
+    .card-scanline {
+      background: linear-gradient(rgba(21, 21, 21, 0) 50%, rgba(26, 26, 26, 1) 50%);
+      background-size: 100% 4px;
+    }
+  </style>
+<style>
+    body {
+      min-height: max(884px, 100dvh);
+    }
+  </style>
+  </head>
+<body class="flex items-center justify-center min-h-screen">
+<!-- Mobile Canvas (390x844 simulated) -->
+<main class="w-[390px] h-[844px] bg-surface relative overflow-hidden flex flex-col">
+<!-- Status Bar -->
+<header class="h-8 bg-surface-container flex items-center justify-between px-margin-edge border-b border-outline-variant">
+<div class="font-hud-timer text-[11px] text-primary tracking-tight">▌onboard/01-draw.tsx</div>
+<div class="font-hud-timer text-[11px] text-on-surface-variant font-bold">STEP 1 OF 3</div>
+</header>
+<!-- Content Canvas -->
+<div class="flex-1 overflow-y-auto pb-action-bar-height">
+<!-- Hero Section -->
+<section class="h-[140px] flex flex-col items-center justify-center mt-8">
+<div class="w-8 h-12 bg-primary animate-pulse mb-2"></div>
+<h1 class="font-headline text-headline text-on-surface uppercase tracking-tighter">
+          WELCOME <span class="text-primary">▌_</span>
+</h1>
+</section>
+<!-- Headline -->
+<section class="px-margin-edge mt-4 text-center">
+<h2 class="font-headline text-[22px] leading-tight text-on-surface mb-1">CHOOSE A DRAW MODE</h2>
+<p class="font-body-md text-[12px] text-on-surface-variant">You can change this any time in Settings.</p>
+</section>
+<!-- Choice Cards -->
+<section class="px-margin-edge mt-8 space-y-4">
+<!-- DRAW-3 Card -->
+<div class="h-[120px] bg-surface-container border border-primary p-4 relative flex items-start gap-4">
+<div class="absolute top-0 right-0 bg-primary px-2 py-0.5">
+<span class="font-label-caps text-[10px] text-surface font-bold">RECOMMENDED</span>
+</div>
+<div class="w-12 h-16 flex items-center justify-center border border-outline-variant bg-surface-dim">
+<span class="material-symbols-outlined text-primary" data-icon="filter_3">filter_3</span>
+</div>
+<div class="flex-1">
+<h3 class="font-headline text-[16px] text-primary mb-1">DRAW-3 (CLASSIC)</h3>
+<p class="font-hud-timer text-[12px] leading-snug text-on-surface-variant">
+              Cycle 3 cards at a time. Standard solitaire rules for a tactical challenge.
+            </p>
+</div>
+</div>
+<!-- DRAW-1 Card -->
+<div class="h-[120px] bg-surface-container border border-outline-variant p-4 flex items-start gap-4">
+<div class="w-12 h-16 flex items-center justify-center border border-outline-variant bg-surface-dim">
+<span class="material-symbols-outlined text-on-surface-variant" data-icon="filter_1">filter_1</span>
+</div>
+<div class="flex-1">
+<h3 class="font-headline text-[16px] text-on-surface mb-1">DRAW-1 (EASY)</h3>
+<p class="font-hud-timer text-[12px] leading-snug text-on-surface-variant">
+              Cycle one card at a time. More winnable, faster pace, perfect for quick sessions.
+            </p>
+</div>
+</div>
+</section>
+<!-- Step Indicator -->
+<section class="mt-12 flex flex-col items-center">
+<div class="flex gap-2 mb-2">
+<div class="w-8 h-1.5 bg-primary"></div>
+<div class="w-8 h-1.5 bg-outline-variant"></div>
+<div class="w-8 h-1.5 bg-outline-variant"></div>
+</div>
+<div class="font-hud-timer text-[12px] flex gap-4">
+<span class="text-primary font-bold">[1]</span>
+<span class="text-outline-variant">[2]</span>
+<span class="text-outline-variant">[3]</span>
+</div>
+</section>
+</div>
+<!-- Bottom Action Bar -->
+<footer class="h-action-bar-height bg-surface-container border-t border-outline flex items-center justify-between px-margin-edge fixed bottom-0 w-[390px] z-50">
+<!-- Back Button (Disabled/Muted) -->
+<button class="w-[48%] h-12 border border-outline-variant flex items-center justify-center gap-2 opacity-40 cursor-not-allowed">
+<span class="material-symbols-outlined text-outline-variant text-[18px]" data-icon="arrow_back">arrow_back</span>
+<span class="font-label-caps text-outline-variant">BACK</span>
+</button>
+<!-- Next Button -->
+<button class="w-[48%] h-12 bg-primary flex items-center justify-center gap-2 active:opacity-80 transition-opacity">
+<span class="font-headline text-[14px] text-surface font-bold uppercase tracking-widest">NEXT</span>
+<span class="material-symbols-outlined text-surface text-[18px]" data-icon="arrow_forward">arrow_forward</span>
+</button>
+</footer>
+<!-- Terminal Overlay (Faint scanlines for atmosphere) -->
+<div class="pointer-events-none absolute inset-0 opacity-[0.03] card-scanline z-[100]"></div>
+</main>
+</body></html>

docs/ui-mockups/onboarding-tap-mobile.html

@@ -0,0 +1,211 @@
+<!DOCTYPE html>
+
+<html class="dark" lang="en"><head>
+<meta charset="utf-8"/>
+<meta content="width=device-width, initial-scale=1.0" name="viewport"/>
+<script src="https://cdn.tailwindcss.com?plugins=forms,container-queries"></script>
+<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&amp;family=Inter:wght@400;500&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<script id="tailwind-config">
+      tailwind.config = {
+        darkMode: "class",
+        theme: {
+          extend: {
+            "colors": {
+                "outline-variant": "#3f484e",
+                "tertiary-fixed-dim": "#f0b0fc",
+                "surface-bright": "#363a3d",
+                "secondary-container": "#435401",
+                "info": "#12cfc0",
+                "on-secondary-fixed-variant": "#3c4d00",
+                "highlight-celebration": "#e1a3ee",
+                "surface-container": "#202020",
+                "on-primary-fixed-variant": "#004c69",
+                "on-surface": "#d0d0d0",
+                "on-secondary-container": "#b2c86d",
+                "inverse-surface": "#e0e3e6",
+                "error": "#fb9fb1",
+                "background": "#101417",
+                "suit-red": "#fb9fb1",
+                "surface-dim": "#101417",
+                "inverse-on-surface": "#2d3134",
+                "on-tertiary-container": "#683476",
+                "secondary": "#bad073",
+                "primary": "#a1dcff",
+                "on-tertiary-fixed-variant": "#653173",
+                "on-error-container": "#ffdad6",
+                "surface-container-high": "#272a2d",
+                "on-tertiary": "#4c195b",
+                "tertiary": "#f7c3ff",
+                "surface": "#151515",
+                "surface-tint": "#7ed0fe",
+                "surface-variant": "#313538",
+                "surface-container-lowest": "#0b0f11",
+                "on-surface-variant": "#bfc8cf",
+                "on-primary": "#003549",
+                "primary-fixed-dim": "#7ed0fe",
+                "on-secondary-fixed": "#161e00",
+                "on-tertiary-fixed": "#340043",
+                "outline": "#505050",
+                "on-secondary": "#293500",
+                "primary-fixed": "#c4e7ff",
+                "primary-container": "#6fc2ef",
+                "on-background": "#e0e3e6",
+                "tertiary-fixed": "#fbd7ff",
+                "error-container": "#93000a",
+                "suit-red-cb": "#6fc2ef",
+                "surface-container-low": "#181c1f",
+                "on-primary-fixed": "#001e2c",
+                "on-primary-container": "#004f6c",
+                "suit-black": "#d0d0d0",
+                "inverse-primary": "#00668a",
+                "on-error": "#690005",
+                "secondary-fixed-dim": "#bad073",
+                "surface-container-highest": "#313538",
+                "secondary-fixed": "#d5ec8c",
+                "highlight-valid": "#acc267",
+                "warning": "#ddb26f",
+                "tertiary-container": "#e1a3ee"
+            },
+            "borderRadius": {
+                "DEFAULT": "0.125rem",
+                "lg": "0.25rem",
+                "xl": "0.5rem",
+                "full": "0.75rem"
+            },
+            "spacing": {
+                "margin-edge": "1rem",
+                "gutter-card": "0.375rem",
+                "touch-target-min": "48dp",
+                "stack-overlap": "2rem",
+                "action-bar-height": "64px"
+            },
+            "fontFamily": {
+                "label-caps": ["JetBrains Mono"],
+                "hud-score": ["JetBrains Mono"],
+                "headline": ["JetBrains Mono"],
+                "card-rank": ["JetBrains Mono"],
+                "hud-timer": ["JetBrains Mono"],
+                "body-md": ["Inter"]
+            },
+            "fontSize": {
+                "label-caps": ["12px", {"lineHeight": "16px", "letterSpacing": "0.08em", "fontWeight": "500"}],
+                "hud-score": ["24px", {"lineHeight": "32px", "letterSpacing": "-0.02em", "fontWeight": "700"}],
+                "headline": ["28px", {"lineHeight": "32px", "letterSpacing": "-0.01em", "fontWeight": "700"}],
+                "card-rank": ["18px", {"lineHeight": "18px", "fontWeight": "700"}],
+                "hud-timer": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+                "body-md": ["16px", {"lineHeight": "24px", "fontWeight": "400"}]
+            }
+          },
+        },
+      }
+    </script>
+<style>
+        .material-symbols-outlined {
+            font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
+        }
+        .scanline-bg {
+            background: linear-gradient(to bottom, #1a1a1a 1px, transparent 1px);
+            background-size: 100% 2px;
+        }
+    </style>
+<style>
+    body {
+      min-height: max(884px, 100dvh);
+    }
+  </style>
+  </head>
+<body class="bg-background text-on-surface font-body-md select-none overflow-hidden h-screen flex flex-col">
+<!-- Top Navigation Bar -->
+<header class="fixed top-0 w-full bg-background z-50 border-b border-outline flex justify-between items-center px-margin-edge h-action-bar-height">
+<div class="flex items-center gap-2">
+<span class="material-symbols-outlined text-primary" data-icon="terminal">terminal</span>
+<span class="font-headline text-headline text-primary uppercase tracking-tighter text-sm md:text-base">▌onboard/03-demo.tsx</span>
+</div>
+<div class="font-label-caps text-label-caps text-on-surface-variant">STEP 3 OF 3</div>
+</header>
+<main class="flex-1 mt-[64px] mb-[64px] flex flex-col items-center px-margin-edge pt-6 space-y-6 overflow-y-auto">
+<!-- Header Text -->
+<div class="w-full text-center space-y-2">
+<h1 class="font-headline text-headline text-on-surface">TRY IT OUT</h1>
+<p class="font-body-md text-on-surface-variant max-w-xs mx-auto">Tap a face-up card to auto-move it to the best legal pile.</p>
+</div>
+<!-- Demo Panel -->
+<div class="w-full max-w-sm bg-surface border border-outline p-6 rounded-lg relative overflow-hidden">
+<!-- Subtle scanline background effect for "terminal" pane feel -->
+<div class="absolute inset-0 scanline-bg opacity-10 pointer-events-none"></div>
+<div class="relative z-10 flex flex-col items-center">
+<!-- Foundation Slot -->
+<div class="w-20 h-28 border border-dashed border-outline-variant flex items-center justify-center mb-12">
+<span class="material-symbols-outlined text-outline-variant opacity-40 text-4xl" data-icon="spades">playing_cards</span>
+</div>
+<!-- Path Indicator (The Arrow) -->
+<div class="absolute top-[84px] left-1/2 -translate-x-1/2 flex flex-col items-center">
+<div class="font-label-caps text-secondary text-[10px] mb-1">MOVES HERE</div>
+<span class="material-symbols-outlined text-secondary text-3xl font-bold" data-icon="arrow_upward">arrow_upward</span>
+</div>
+<!-- Mini-Cards Row -->
+<div class="flex gap-gutter-card">
+<!-- A-Spades (Target) -->
+<div class="w-20 h-28 bg-surface border-2 border-primary rounded flex flex-col justify-between p-2 relative ring-1 ring-primary ring-offset-2 ring-offset-surface">
+<div class="font-card-rank text-card-rank text-suit-black">A</div>
+<span class="material-symbols-outlined self-end text-3xl text-suit-black" data-icon="spades" style="font-variation-settings: 'FILL' 1;">playing_cards</span>
+<!-- Pulse Icon -->
+<div class="absolute inset-0 flex items-center justify-center">
+<span class="material-symbols-outlined text-primary text-4xl opacity-80" data-icon="touch_app">touch_app</span>
+</div>
+</div>
+<!-- K-Hearts -->
+<div class="w-20 h-28 bg-surface border border-suit-red rounded flex flex-col justify-between p-2 opacity-50">
+<div class="font-card-rank text-card-rank text-suit-red">K</div>
+<span class="material-symbols-outlined self-end text-3xl text-suit-red" data-icon="favorite" style="font-variation-settings: 'FILL' 1;">favorite</span>
+</div>
+<!-- Q-Clubs -->
+<div class="w-20 h-28 bg-surface border border-outline rounded flex flex-col justify-between p-2 opacity-50">
+<div class="font-card-rank text-card-rank text-on-surface">Q</div>
+<span class="material-symbols-outlined self-end text-3xl text-on-surface" data-icon="clubs">groups</span>
+</div>
+</div>
+</div>
+</div>
+<!-- CLI Prompt -->
+<div class="w-full max-w-sm flex items-center gap-2 font-label-caps text-on-surface py-2">
+<span class="text-primary">▌</span>
+<span class="tracking-widest">TAP THE A♠ TO CONTINUE</span>
+<span class="w-3 h-5 bg-primary animate-pulse"></span>
+</div>
+<!-- Feature List -->
+<div class="w-full max-w-sm space-y-3 pt-2">
+<div class="flex items-center gap-3">
+<span class="material-symbols-outlined text-secondary text-sm" data-icon="check_circle" style="font-variation-settings: 'FILL' 1;">check_circle</span>
+<span class="font-label-caps text-label-caps">TAP TO AUTO-MOVE</span>
+</div>
+<div class="flex items-center gap-3">
+<span class="material-symbols-outlined text-secondary text-sm" data-icon="check_circle" style="font-variation-settings: 'FILL' 1;">check_circle</span>
+<span class="font-label-caps text-label-caps">DRAG TO TARGET PILE</span>
+</div>
+<div class="flex items-center gap-3">
+<span class="material-symbols-outlined text-secondary text-sm" data-icon="check_circle" style="font-variation-settings: 'FILL' 1;">check_circle</span>
+<span class="font-label-caps text-label-caps">DOUBLE-TAP TO FOUNDATION</span>
+</div>
+</div>
+<!-- Step Indicators -->
+<div class="flex gap-2 py-4">
+<div class="w-8 h-1 bg-primary"></div>
+<div class="w-8 h-1 bg-primary"></div>
+<div class="w-8 h-1 bg-primary"></div>
+</div>
+</main>
+<!-- Bottom Action Bar -->
+<footer class="fixed bottom-0 w-full h-[64px] bg-surface-container border-t border-outline flex items-center px-margin-edge justify-between z-50">
+<button class="px-6 py-2 border border-outline text-on-surface-variant font-label-caps text-label-caps transition-colors duration-120 active:bg-surface-bright flex items-center gap-2">
+<span class="material-symbols-outlined text-sm" data-icon="arrow_back">arrow_back</span>
+            BACK
+        </button>
+<button class="px-6 py-2 bg-primary text-on-primary font-label-caps text-label-caps transition-colors duration-120 active:bg-primary-container flex items-center gap-2">
+<span class="material-symbols-outlined text-sm" data-icon="play_arrow" style="font-variation-settings: 'FILL' 1;">play_arrow</span>
+            START PLAYING
+        </button>
+</footer>
+</body></html>

docs/ui-mockups/onboarding-theme-mobile.html

@@ -0,0 +1,218 @@
+<!DOCTYPE html>
+
+<html class="dark" lang="en"><head>
+<meta charset="utf-8"/>
+<meta content="width=390, height=844, initial-scale=1.0" name="viewport"/>
+<script src="https://cdn.tailwindcss.com?plugins=forms,container-queries"></script>
+<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700;800&amp;family=Inter:wght@400;500;700&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<script id="tailwind-config">
+        tailwind.config = {
+            darkMode: "class",
+            theme: {
+                extend: {
+                    "colors": {
+                        "highlight-valid": "#acc267",
+                        "outline": "#505050",
+                        "highlight-celebration": "#e1a3ee",
+                        "error-container": "#93000a",
+                        "surface-container": "#202020",
+                        "on-secondary-fixed": "#161e00",
+                        "tertiary": "#f7c3ff",
+                        "inverse-on-surface": "#2d3134",
+                        "tertiary-fixed-dim": "#f0b0fc",
+                        "on-primary-fixed": "#001e2c",
+                        "info": "#12cfc0",
+                        "on-tertiary": "#4c195b",
+                        "secondary-container": "#435401",
+                        "surface": "#151515",
+                        "tertiary-container": "#e1a3ee",
+                        "outline-variant": "#3f484e",
+                        "suit-red": "#fb9fb1",
+                        "secondary-fixed": "#d5ec8c",
+                        "error": "#fb9fb1",
+                        "primary-container": "#6fc2ef",
+                        "surface-container-lowest": "#0b0f11",
+                        "on-surface": "#e0e3e6",
+                        "tertiary-fixed": "#fbd7ff",
+                        "on-secondary-container": "#b2c86d",
+                        "on-primary-fixed-variant": "#004c69",
+                        "on-primary": "#003549",
+                        "on-secondary": "#293500",
+                        "on-primary-container": "#004f6c",
+                        "secondary": "#bad073",
+                        "surface-container-highest": "#313538",
+                        "primary": "#a1dcff",
+                        "surface-container-low": "#181c1f",
+                        "secondary-fixed-dim": "#bad073",
+                        "warning": "#ddb26f",
+                        "suit-black": "#d0d0d0",
+                        "surface-variant": "#313538",
+                        "on-tertiary-container": "#683476",
+                        "on-tertiary-fixed": "#340043",
+                        "on-secondary-fixed-variant": "#3c4d00",
+                        "on-background": "#e0e3e6",
+                        "surface-bright": "#363a3d",
+                        "on-error": "#690005",
+                        "primary-fixed-dim": "#7ed0fe",
+                        "on-tertiary-fixed-variant": "#653173",
+                        "suit-red-cb": "#6fc2ef",
+                        "inverse-surface": "#e0e3e6",
+                        "on-surface-variant": "#bfc8cf",
+                        "background": "#101417",
+                        "primary-fixed": "#c4e7ff",
+                        "on-error-container": "#ffdad6",
+                        "inverse-primary": "#00668a",
+                        "surface-dim": "#101417",
+                        "surface-container-high": "#272a2d",
+                        "surface-tint": "#7ed0fe",
+                        "cyan-terminal": "#6fc2ef"
+                    },
+                    "borderRadius": {
+                        "DEFAULT": "0.125rem",
+                        "lg": "0.25rem",
+                        "xl": "0.5rem",
+                        "full": "0.75rem"
+                    },
+                    "spacing": {
+                        "touch-target-min": "48dp",
+                        "stack-overlap": "2rem",
+                        "gutter-card": "0.375rem",
+                        "action-bar-height": "64px",
+                        "margin-edge": "1rem"
+                    },
+                    "fontFamily": {
+                        "headline": ["JetBrains Mono"],
+                        "label-caps": ["JetBrains Mono"],
+                        "body-md": ["Inter"],
+                        "hud-score": ["JetBrains Mono"],
+                        "card-rank": ["JetBrains Mono"],
+                        "hud-timer": ["JetBrains Mono"]
+                    }
+                }
+            }
+        }
+    </script>
+<style>
+        .scanline-pattern {
+            background: repeating-linear-gradient(
+                0deg,
+                #151515,
+                #151515 2px,
+                #1a1a1a 2px,
+                #1a1a1a 4px
+            );
+        }
+        .checker-pattern {
+            background-color: #ffffff;
+            background-image: 
+                linear-gradient(45deg, #004c69 25%, transparent 25%), 
+                linear-gradient(-45deg, #004c69 25%, transparent 25%), 
+                linear-gradient(45deg, transparent 75%, #004c69 75%), 
+                linear-gradient(-45deg, transparent 75%, #004c69 75%);
+            background-size: 8px 8px;
+            background-position: 0 0, 0 4px, 4px -4px, -4px 0px;
+        }
+        .stripe-pattern {
+            background: repeating-linear-gradient(
+                0deg,
+                #fb9fb1,
+                #fb9fb1 4px,
+                #151515 4px,
+                #151515 8px
+            );
+        }
+    </style>
+<style>
+    body {
+      min-height: max(884px, 100dvh);
+    }
+  </style>
+  </head>
+<body class="bg-surface text-on-surface min-h-screen flex flex-col items-center overflow-hidden selection:bg-cyan-terminal selection:text-surface">
+<!-- 1. Status Bar -->
+<header class="w-full h-8 bg-surface-container flex items-center justify-between px-4 border-b border-outline-variant">
+<span class="font-label-caps text-[12px] text-on-surface uppercase tracking-tight">▌onboard/02-theme.tsx</span>
+<span class="font-label-caps text-[12px] text-[#a0a0a0] uppercase tracking-widest">STEP 2 OF 3</span>
+</header>
+<!-- 2. Hero Illustration Band -->
+<section class="w-full flex flex-col items-center pt-8 pb-4">
+<div class="h-[100px] flex items-center justify-center relative">
+<span class="text-cyan-terminal font-headline text-[48px] mr-4 select-none">▌</span>
+<div class="flex -space-x-4">
+<div class="w-[24px] h-[34px] border border-outline bg-surface scanline-pattern transform -rotate-12 translate-y-2"></div>
+<div class="w-[24px] h-[34px] border border-outline bg-surface checker-pattern transform rotate-0 z-10"></div>
+<div class="w-[24px] h-[34px] border border-outline bg-surface stripe-pattern transform rotate-12 translate-y-2"></div>
+</div>
+</div>
+<h2 class="font-headline text-[28px] font-bold text-suit-black tracking-tight leading-none">PICK YOUR DECK</h2>
+</section>
+<!-- 3. Headline & Description -->
+<section class="w-full px-margin-edge text-center mb-6">
+<h3 class="font-headline text-[22px] font-bold text-suit-black mb-1">CHOOSE A CARD-BACK</h3>
+<p class="font-body-md text-[12px] text-[#a0a0a0] leading-tight">
+            You can swap or import more themes from Settings later.
+        </p>
+</section>
+<!-- 4. Theme Selection Grid -->
+<main class="w-full px-margin-edge grid grid-cols-3 gap-2 flex-grow max-h-[220px]">
+<!-- Tile 1: Terminal (Active) -->
+<div class="flex flex-col items-center">
+<div class="w-full aspect-[110/150] bg-surface-container border-2 border-cyan-terminal rounded-lg p-3 relative flex items-center justify-center overflow-hidden">
+<div class="w-full h-full scanline-pattern border border-outline-variant relative">
+<div class="absolute top-1 left-1 w-2 h-3 bg-cyan-terminal"></div>
+<div class="absolute bottom-1 right-1 font-headline text-[10px] text-on-surface opacity-50">▌RS</div>
+</div>
+<div class="absolute top-1 right-1 bg-cyan-terminal text-surface w-4 h-4 flex items-center justify-center rounded-full">
+<span class="material-symbols-outlined text-[12px] font-bold">check</span>
+</div>
+</div>
+<span class="mt-2 font-label-caps text-[12px] font-bold text-suit-black tracking-widest uppercase">TERMINAL</span>
+</div>
+<!-- Tile 2: Classic -->
+<div class="flex flex-col items-center opacity-70">
+<div class="w-full aspect-[110/150] bg-surface-container border border-outline rounded-lg p-3 relative flex items-center justify-center overflow-hidden">
+<div class="w-full h-full checker-pattern border border-outline-variant"></div>
+</div>
+<span class="mt-2 font-label-caps text-[12px] font-bold text-suit-black tracking-widest uppercase">CLASSIC</span>
+</div>
+<!-- Tile 3: Stripes -->
+<div class="flex flex-col items-center opacity-70">
+<div class="w-full aspect-[110/150] bg-surface-container border border-outline rounded-lg p-3 relative flex items-center justify-center overflow-hidden">
+<div class="w-full h-full stripe-pattern border border-outline-variant"></div>
+</div>
+<span class="mt-2 font-label-caps text-[12px] font-bold text-suit-black tracking-widest uppercase">STRIPES</span>
+</div>
+</main>
+<!-- 5. More Info -->
+<div class="w-full text-center mt-4">
+<span class="font-label-caps text-[11px] font-medium text-[#a0a0a0] tracking-widest">
+<span class="text-cyan-terminal">+</span> MORE IN SETTINGS
+        </span>
+</div>
+<!-- 6. Step Indicator -->
+<section class="w-full flex flex-col items-center mt-6">
+<div class="flex gap-1 h-2 mb-2">
+<div class="w-8 h-1 bg-cyan-terminal rounded-full"></div>
+<div class="w-8 h-1 bg-cyan-terminal rounded-full"></div>
+<div class="w-8 h-1 bg-outline rounded-full"></div>
+</div>
+<div class="font-headline text-[12px] font-medium tracking-[0.2em]">
+<span class="text-cyan-terminal">[1]</span>
+<span class="text-cyan-terminal">[2]</span>
+<span class="text-outline">[3]</span>
+</div>
+</section>
+<!-- 7. Bottom Action Bar -->
+<footer class="fixed bottom-0 w-full h-[64px] bg-surface-container flex items-center justify-between px-margin-edge z-50">
+<button class="w-[48%] h-12 border border-outline bg-transparent text-suit-black font-label-caps text-[13px] font-medium uppercase rounded-lg active:bg-surface-variant transition-colors">
+            ← BACK
+        </button>
+<button class="w-[48%] h-12 bg-cyan-terminal text-surface font-label-caps text-[14px] font-bold uppercase rounded-lg active:opacity-80 transition-opacity">
+            NEXT →
+        </button>
+</footer>
+<!-- Image descriptive data for the model (hidden visually) -->
+<div class="hidden" data-alt="A detailed user interface screen for a retro-terminal themed solitaire game called Rusty Solitaire. The background is a deep black with cyan and gray accents. In the center, a card theme selection grid displays three different card back designs: a scanline pattern, a checker pattern, and a striped pattern. The visual style is crisp, technical, and uses monospaced typography to evoke a command-line interface or professional developer environment. The mood is minimalist, efficient, and technologically nostalgic."></div>
+</body></html>

docs/ui-mockups/pause-menu-mobile.html

@@ -0,0 +1,212 @@
+<!DOCTYPE html>
+
+<html class="dark" lang="en"><head>
+<meta charset="utf-8"/>
+<meta content="width=device-width, initial-scale=1.0" name="viewport"/>
+<title>Rouge Solitaire - Pause</title>
+<script src="https://cdn.tailwindcss.com?plugins=forms,container-queries"></script>
+<link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;700&amp;family=JetBrains+Mono:wght@400;500;700;800&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<script id="tailwind-config">
+        tailwind.config = {
+            darkMode: "class",
+            theme: {
+                extend: {
+                    "colors": {
+                        "on-secondary-fixed": "#161e00",
+                        "secondary-fixed": "#d5ec8c",
+                        "warning": "#ddb26f",
+                        "surface-container-low": "#181c1f",
+                        "surface-container": "#1c2023",
+                        "on-primary-fixed-variant": "#004c69",
+                        "outline-variant": "#3f484e",
+                        "on-tertiary-container": "#683476",
+                        "surface-container-high": "#272a2d",
+                        "on-primary-fixed": "#001e2c",
+                        "primary-fixed": "#c4e7ff",
+                        "surface-bright": "#363a3d",
+                        "outline": "#505050",
+                        "tertiary-fixed-dim": "#f0b0fc",
+                        "tertiary": "#f7c3ff",
+                        "on-surface": "#e0e3e6",
+                        "secondary": "#bad073",
+                        "tertiary-fixed": "#fbd7ff",
+                        "info": "#12cfc0",
+                        "primary": "#a1dcff",
+                        "secondary-fixed-dim": "#bad073",
+                        "surface-tint": "#7ed0fe",
+                        "background": "#101417",
+                        "surface-container-highest": "#313538",
+                        "on-tertiary-fixed": "#340043",
+                        "highlight-valid": "#acc267",
+                        "inverse-primary": "#00668a",
+                        "surface-dim": "#101417",
+                        "error": "#fb9fb1",
+                        "on-error": "#690005",
+                        "inverse-surface": "#e0e3e6",
+                        "suit-red": "#fb9fb1",
+                        "suit-black": "#d0d0d0",
+                        "inverse-on-surface": "#2d3134",
+                        "highlight-celebration": "#e1a3ee",
+                        "on-error-container": "#ffdad6",
+                        "on-primary": "#003549",
+                        "surface": "#151515",
+                        "surface-container-lowest": "#0b0f11",
+                        "primary-fixed-dim": "#7ed0fe",
+                        "on-secondary": "#293500",
+                        "suit-red-cb": "#6fc2ef",
+                        "on-tertiary": "#4c195b",
+                        "error-container": "#93000a",
+                        "on-secondary-fixed-variant": "#3c4d00",
+                        "on-secondary-container": "#b2c86d",
+                        "on-surface-variant": "#bfc8cf",
+                        "on-primary-container": "#004f6c",
+                        "primary-container": "#6fc2ef",
+                        "on-background": "#e0e3e6",
+                        "surface-variant": "#313538",
+                        "secondary-container": "#435401",
+                        "on-tertiary-fixed-variant": "#653173",
+                        "tertiary-container": "#e1a3ee"
+                    },
+                    "borderRadius": {
+                        "DEFAULT": "0.125rem",
+                        "lg": "0.25rem",
+                        "xl": "0.5rem",
+                        "full": "0.75rem"
+                    },
+                    "spacing": {
+                        "touch-target-min": "48dp",
+                        "action-bar-height": "64px",
+                        "stack-overlap": "2rem",
+                        "margin-edge": "1rem",
+                        "gutter-card": "0.375rem"
+                    },
+                    "fontFamily": {
+                        "body-md": ["Inter"],
+                        "headline": ["JetBrains Mono"],
+                        "hud-score": ["JetBrains Mono"],
+                        "hud-timer": ["JetBrains Mono"],
+                        "card-rank": ["JetBrains Mono"],
+                        "label-caps": ["JetBrains Mono"]
+                    },
+                    "fontSize": {
+                        "body-md": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+                        "headline": ["28px", {"lineHeight": "32px", "letterSpacing": "-0.01em", "fontWeight": "700"}],
+                        "hud-score": ["24px", {"lineHeight": "32px", "letterSpacing": "-0.02em", "fontWeight": "700"}],
+                        "hud-timer": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+                        "card-rank": ["18px", {"lineHeight": "18px", "fontWeight": "700"}],
+                        "label-caps": ["12px", {"lineHeight": "16px", "letterSpacing": "0.08em", "fontWeight": "500"}]
+                    }
+                },
+            },
+        }
+    </script>
+<style>
+        .scanline {
+            background: linear-gradient(
+                to bottom,
+                transparent 50%,
+                rgba(0, 0, 0, 0.05) 50%
+            );
+            background-size: 100% 4px;
+            pointer-events: none;
+        }
+        .material-symbols-outlined {
+            font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
+        }
+    </style>
+<style>
+    body {
+      min-height: max(884px, 100dvh);
+    }
+  </style>
+  </head>
+<body class="bg-background text-on-surface font-body-md overflow-hidden antialiased">
+<!-- Background Tableau (Simulated by Dimmed Image Overlay) -->
+<div class="fixed inset-0 z-0">
+<img alt="Game Tableau Background" class="w-full h-full object-cover" src="https://lh3.googleusercontent.com/aida-public/AB6AXuDJSHHDQ5Y5qul5C_xabnOSM9aS3uxcWSTk47AOHrS_KIlQi0Ur7YhtL0BomjEWTDc8vRLpytWeG4kf5xgxBzpORahTtsWyXOUPsVRg6_H_qp0QjM6DDo57rOPwjU6TFdfK3Pi7cO9rg-xnUSSu1wu29WyKVwSWDDaA5cZ4QN_9L81YMTCTMKAwDTGsY3eGsj1b1i1X2CdF211aepkhmX8xf4bnV35WSB3QuYxUwlPct0Met7iLFf-AGBeizhK6IAboW5u-Wpg8Ag"/>
+<!-- 95% Opacity Scrim -->
+<div class="absolute inset-0 bg-surface opacity-95"></div>
+<!-- Scanline Overlay for Texture -->
+<div class="absolute inset-0 scanline"></div>
+</div>
+<!-- Modal Container -->
+<div class="fixed inset-0 z-10 flex items-center justify-center p-margin-edge">
+<!-- Modal Panel -->
+<div class="w-[330px] h-[480px] bg-[#202020] border border-outline rounded-xl flex flex-col overflow-hidden">
+<!-- Title Bar -->
+<div class="h-[28px] bg-[#1a1a1a] border-b border-[#353535] px-3 flex items-center justify-between">
+<div class="flex items-center gap-1.5">
+<span class="text-primary-container font-headline text-[12px] leading-none mt-px">▌</span>
+<span class="font-headline text-[12px] text-[#a0a0a0] leading-none">pause.tsx</span>
+</div>
+<button class="flex items-center justify-center">
+<span class="material-symbols-outlined text-[16px] text-[#505050]">close</span>
+</button>
+</div>
+<!-- Content Canvas -->
+<div class="flex-1 flex flex-col items-center pt-8 px-4">
+<!-- Headline -->
+<h1 class="font-headline text-[24px] font-bold text-[#d0d0d0] tracking-tight text-center">
+                    GAME PAUSED
+                </h1>
+<!-- Subline -->
+<p class="font-headline text-[12px] text-[#a0a0a0] mt-1 text-center">
+                    12:34 ELAPSED · 87 MOVES · DRAW-3
+                </p>
+<!-- Mini-Stat Chips -->
+<div class="flex gap-2 mt-4 justify-center">
+<div class="bg-[#1a1a1a] border border-[#353535] rounded-sm px-2 py-1 flex flex-col items-center">
+<span class="font-headline text-[11px] text-[#d0d0d0]">SCORE 247</span>
+</div>
+<div class="bg-[#1a1a1a] border border-[#353535] rounded-sm px-2 py-1 flex flex-col items-center">
+<span class="font-headline text-[11px] text-[#d0d0d0]">STOCK 18</span>
+</div>
+<div class="bg-[#1a1a1a] border border-[#353535] rounded-sm px-2 py-1 flex flex-col items-center">
+<span class="font-headline text-[11px] text-[#d0d0d0]">MOVES 87</span>
+</div>
+</div>
+<!-- Action Buttons Cluster -->
+<div class="w-full mt-6 space-y-3">
+<!-- Primary CTA -->
+<button class="w-full h-[48px] bg-primary-container text-surface flex items-center justify-center rounded-lg active:scale-95 transition-transform duration-75">
+<span class="font-headline text-[14px] font-bold tracking-[0.08em] uppercase">▶ RESUME GAME</span>
+</button>
+<!-- Secondary Buttons -->
+<button class="w-full h-[48px] bg-transparent border border-outline text-[#d0d0d0] flex items-center justify-center rounded-lg hover:border-primary-container hover:text-primary-container transition-colors duration-120">
+<span class="font-headline text-[13px] font-medium tracking-[0.08em] uppercase">↻ RESTART</span>
+</button>
+<button class="w-full h-[48px] bg-transparent border border-outline text-[#d0d0d0] flex items-center justify-center rounded-lg hover:border-primary-container hover:text-primary-container transition-colors duration-120">
+<span class="font-headline text-[13px] font-medium tracking-[0.08em] uppercase">✕ FORFEIT</span>
+</button>
+<button class="w-full h-[48px] bg-transparent border border-outline text-[#d0d0d0] flex items-center justify-center rounded-lg hover:border-primary-container hover:text-primary-container transition-colors duration-120">
+<span class="font-headline text-[13px] font-medium tracking-[0.08em] uppercase">⌂ QUIT TO MENU</span>
+</button>
+</div>
+</div>
+<!-- Footer Status Line -->
+<div class="h-[24px] border-t border-[#353535] px-3 flex items-center justify-between">
+<div class="flex items-center gap-1">
+<span class="text-primary-container font-headline text-[11px]">▌</span>
+<span class="font-headline text-[11px] text-[#a0a0a0]">NORMAL</span>
+<span class="text-[#505050] text-[11px]">│</span>
+<span class="font-headline text-[11px] text-[#a0a0a0]">pause</span>
+</div>
+<div class="flex items-center gap-1 font-headline text-[11px]">
+<span class="text-[#a0a0a0]">[ESC]</span>
+<span class="text-[#505050]">resume</span>
+</div>
+</div>
+</div>
+</div>
+<!-- Hidden Navigation Shell (Suppressed due to Task-Focused Modal Context) -->
+<!-- But included visually as per the brand anchor hierarchy for TopAppBar identity if it were visible -->
+<header class="hidden fixed top-0 w-full h-action-bar-height flex items-center justify-between px-margin-edge w-full bg-background border-b border-outline-variant">
+<div class="flex items-center gap-2">
+<span class="material-symbols-outlined text-primary">terminal</span>
+<span class="font-headline text-headline text-primary uppercase tracking-tighter">▌ROUGE_SOLITAIRE</span>
+</div>
+</header>
+<!-- Bottom Nav Suppression Logic: Not rendered to prioritize the focus canvas -->
+</body></html>

docs/ui-mockups/profile-mobile.html

@@ -0,0 +1,274 @@
+<!DOCTYPE html>
+
+<html class="dark" lang="en"><head>
+<meta charset="utf-8"/>
+<meta content="width=device-width, initial-scale=1.0" name="viewport"/>
+<script src="https://cdn.tailwindcss.com?plugins=forms,container-queries"></script>
+<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&amp;family=Inter:wght@400;500;700&amp;family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<style>
+    .material-symbols-outlined {
+      font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
+    }
+    /* CRT Scanline Overlay Effect */
+    .crt-overlay {
+      position: fixed;
+      top: 0;
+      left: 0;
+      width: 100%;
+      height: 100%;
+      background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.1) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.03), rgba(0, 255, 0, 0.01), rgba(0, 0, 255, 0.03));
+      background-size: 100% 3px, 3px 100%;
+      pointer-events: none;
+      z-index: 100;
+    }
+    .custom-scrollbar::-webkit-scrollbar {
+      height: 4px;
+    }
+    .custom-scrollbar::-webkit-scrollbar-track {
+      background: #151515;
+    }
+    .custom-scrollbar::-webkit-scrollbar-thumb {
+      background: #505050;
+    }
+  </style>
+<script id="tailwind-config">
+    tailwind.config = {
+      darkMode: "class",
+      theme: {
+        extend: {
+          "colors": {
+            "surface-container-low": "#181c1f",
+            "on-primary-fixed": "#001e2c",
+            "on-error": "#690005",
+            "suit-black": "#d0d0d0",
+            "inverse-primary": "#00668a",
+            "on-primary-container": "#004f6c",
+            "suit-red-cb": "#6fc2ef",
+            "tertiary-container": "#e1a3ee",
+            "secondary-fixed": "#d5ec8c",
+            "highlight-valid": "#acc267",
+            "surface-container-highest": "#313538",
+            "secondary-fixed-dim": "#bad073",
+            "warning": "#ddb26f",
+            "on-secondary-fixed": "#161e00",
+            "primary-fixed-dim": "#7ed0fe",
+            "on-surface-variant": "#bfc8cf",
+            "on-primary": "#003549",
+            "tertiary-fixed": "#fbd7ff",
+            "primary-container": "#6fc2ef",
+            "on-background": "#e0e3e6",
+            "error-container": "#93000a",
+            "outline": "#505050",
+            "on-tertiary-fixed": "#340043",
+            "primary-fixed": "#c4e7ff",
+            "on-surface": "#e0e3e6",
+            "on-secondary": "#293500",
+            "surface-container-high": "#272a2d",
+            "on-tertiary": "#4c195b",
+            "secondary": "#bad073",
+            "on-tertiary-container": "#683476",
+            "inverse-on-surface": "#2d3134",
+            "surface-dim": "#101417",
+            "primary": "#a1dcff",
+            "on-tertiary-fixed-variant": "#653173",
+            "on-error-container": "#ffdad6",
+            "surface-variant": "#313538",
+            "surface-tint": "#7ed0fe",
+            "surface-container-lowest": "#0b0f11",
+            "surface": "#151515",
+            "tertiary": "#f7c3ff",
+            "on-secondary-fixed-variant": "#3c4d00",
+            "surface-bright": "#363a3d",
+            "tertiary-fixed-dim": "#f0b0fc",
+            "outline-variant": "#3f484e",
+            "info": "#12cfc0",
+            "secondary-container": "#435401",
+            "on-secondary-container": "#b2c86d",
+            "inverse-surface": "#e0e3e6",
+            "error": "#fb9fb1",
+            "suit-red": "#fb9fb1",
+            "background": "#101417",
+            "highlight-celebration": "#e1a3ee",
+            "on-primary-fixed-variant": "#004c69",
+            "surface-container": "#202020"
+          },
+          "borderRadius": {
+            "DEFAULT": "0.125rem",
+            "lg": "0.25rem",
+            "xl": "0.5rem",
+            "full": "0.75rem"
+          },
+          "spacing": {
+            "stack-overlap": "2rem",
+            "action-bar-height": "64px",
+            "touch-target-min": "48dp",
+            "gutter-card": "0.375rem",
+            "margin-edge": "1rem"
+          },
+          "fontFamily": {
+            "headline": ["JetBrains Mono"],
+            "label-caps": ["JetBrains Mono"],
+            "hud-score": ["JetBrains Mono"],
+            "hud-timer": ["JetBrains Mono"],
+            "body-md": ["Inter"],
+            "card-rank": ["JetBrains Mono"]
+          },
+          "fontSize": {
+            "headline": ["28px", {"lineHeight": "32px", "letterSpacing": "-0.01em", "fontWeight": "700"}],
+            "label-caps": ["12px", {"lineHeight": "16px", "letterSpacing": "0.08em", "fontWeight": "500"}],
+            "hud-score": ["24px", {"lineHeight": "32px", "letterSpacing": "-0.02em", "fontWeight": "700"}],
+            "hud-timer": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+            "body-md": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+            "card-rank": ["18px", {"lineHeight": "18px", "fontWeight": "700"}]
+          }
+        },
+      },
+    }
+  </script>
+<style>
+    body {
+      min-height: max(884px, 100dvh);
+    }
+  </style>
+  </head>
+<body class="bg-background text-on-background font-body-md selection:bg-primary selection:text-background overflow-x-hidden">
+<div class="crt-overlay"></div>
+<!-- Status Bar -->
+<header class="bg-surface-container h-[32px] w-full flex items-center justify-between px-margin-edge z-50">
+<div class="font-headline text-[12px] text-on-surface-variant tracking-wider">
+      ▌profile.tsx
+    </div>
+<div class="flex items-center gap-2">
+<span class="w-2 h-2 rounded-full bg-info"></span>
+<span class="font-label-caps text-[10px] text-on-surface">● SYNCED</span>
+</div>
+</header>
+<!-- Main Canvas -->
+<main class="flex-1 overflow-y-auto pb-24">
+<!-- Profile Header -->
+<section class="h-[120px] bg-surface-container border-b border-outline-variant flex items-center px-margin-edge gap-4">
+<div class="w-[64px] h-[64px] bg-[#1a1a1a] border border-outline flex items-center justify-center shrink-0">
+<span class="font-headline text-[28px] text-primary-container">RS</span>
+</div>
+<div class="flex flex-col gap-1 overflow-hidden">
+<h1 class="font-headline text-[18px] text-on-surface truncate">anonymous@local</h1>
+<p class="font-label-caps text-on-surface-variant text-[10px]">MEMBER SINCE 2026-04-22</p>
+<div class="flex gap-2 mt-1">
+<span class="px-2 py-0.5 bg-[#1a1a1a] font-label-caps text-[10px] text-suit-black">247 GAMES</span>
+<span class="px-2 py-0.5 bg-[#1a1a1a] font-label-caps text-[10px] text-suit-black">61% WR</span>
+<span class="px-2 py-0.5 bg-[#1a1a1a] font-label-caps text-[10px] text-suit-black">12 STREAK</span>
+</div>
+</div>
+</section>
+<!-- Level/XP Section -->
+<section class="p-margin-edge bg-surface-container border-b border-outline-variant">
+<div class="flex justify-between items-baseline mb-2">
+<span class="font-headline text-[24px] text-on-surface">LEVEL 12</span>
+<span class="font-hud-timer text-on-surface-variant">320/500 XP</span>
+</div>
+<div class="h-3 w-full bg-[#353535] relative overflow-hidden">
+<div class="h-full bg-primary-container" style="width: 64%;"></div>
+</div>
+<div class="flex items-center gap-2 mt-3">
+<span class="w-1.5 h-1.5 rounded-full bg-highlight-celebration"></span>
+<span class="font-label-caps text-[10px] text-on-surface-variant">180 XP TO LEVEL 13</span>
+</div>
+</section>
+<!-- Unlocked Cards -->
+<section class="mt-6">
+<h2 class="px-margin-edge font-headline text-[14px] text-on-surface mb-4">▌ unlocked.cards</h2>
+<div class="flex overflow-x-auto gap-4 px-margin-edge pb-4 custom-scrollbar">
+<!-- Terminal (Active) -->
+<div class="shrink-0 flex flex-col gap-2">
+<div class="w-[60px] h-[84px] bg-surface-container-low border-2 border-primary-container relative flex items-center justify-center p-1">
+<div class="w-full h-full bg-[#151515] overflow-hidden flex flex-col p-1">
+<div class="w-2 h-2.5 bg-primary-container mb-auto"></div>
+<div class="self-end text-[8px] font-headline text-on-surface-variant opacity-50">▌RS</div>
+</div>
+</div>
+<span class="font-label-caps text-[9px] text-primary-container text-center">ACTIVE</span>
+</div>
+<!-- Classic -->
+<div class="shrink-0 flex flex-col gap-2">
+<div class="w-[60px] h-[84px] bg-white border border-outline relative p-1">
+<div class="w-full h-full border border-red-200 bg-red-50 opacity-20"></div>
+</div>
+<span class="font-label-caps text-[9px] text-on-surface-variant text-center opacity-50">TAP TO USE</span>
+</div>
+<!-- Stripes -->
+<div class="shrink-0 flex flex-col gap-2">
+<div class="w-[60px] h-[84px] bg-surface-container border border-outline p-1">
+<div class="w-full h-full bg-gradient-to-br from-secondary-container via-surface to-secondary-container opacity-40"></div>
+</div>
+<span class="font-label-caps text-[9px] text-on-surface-variant text-center opacity-50">TAP TO USE</span>
+</div>
+<!-- Polka -->
+<div class="shrink-0 flex flex-col gap-2">
+<div class="w-[60px] h-[84px] bg-surface-container border border-outline p-1 overflow-hidden relative">
+<div class="w-full h-full opacity-30" style="background-image: radial-gradient(#505050 1px, transparent 0); background-size: 6px 6px;"></div>
+</div>
+<span class="font-label-caps text-[9px] text-on-surface-variant text-center opacity-50">TAP TO USE</span>
+</div>
+</div>
+</section>
+<!-- Unlocked Backgrounds -->
+<section class="mt-6">
+<h2 class="px-margin-edge font-headline text-[14px] text-on-surface mb-4">▌ unlocked.backgrounds</h2>
+<div class="flex overflow-x-auto gap-4 px-margin-edge pb-4 custom-scrollbar">
+<!-- Default (Active) -->
+<div class="shrink-0 flex flex-col gap-2">
+<div class="w-[80px] h-[56px] bg-[#151515] border-2 border-primary-container"></div>
+<span class="font-label-caps text-[9px] text-primary-container text-center">ACTIVE</span>
+</div>
+<!-- Forest -->
+<div class="shrink-0 flex flex-col gap-2">
+<div class="w-[80px] h-[56px] bg-[#0d160d] border border-outline"></div>
+<span class="font-label-caps text-[9px] text-on-surface-variant text-center opacity-50">FOREST</span>
+</div>
+<!-- Slate -->
+<div class="shrink-0 flex flex-col gap-2">
+<div class="w-[80px] h-[56px] bg-[#1c2128] border border-outline"></div>
+<span class="font-label-caps text-[9px] text-on-surface-variant text-center opacity-50">SLATE</span>
+</div>
+<!-- Midnight -->
+<div class="shrink-0 flex flex-col gap-2">
+<div class="w-[80px] h-[56px] bg-[#09090b] border border-outline"></div>
+<span class="font-label-caps text-[9px] text-on-surface-variant text-center opacity-50">MIDNIGHT</span>
+</div>
+</div>
+</section>
+<!-- Sign-in Card -->
+<section class="mt-8 px-margin-edge">
+<button class="w-full h-[64px] bg-surface-container border border-dashed border-outline flex items-center justify-between px-6 hover:bg-surface-variant transition-colors group">
+<span class="font-label-caps text-on-surface-variant tracking-widest">+ SIGN IN TO SYNC PROGRESS</span>
+<span class="material-symbols-outlined text-primary-container group-hover:translate-x-1 transition-transform">arrow_forward</span>
+</button>
+</section>
+</main>
+<!-- TopAppBar (from Shared Components - as Terminal Header) -->
+<div class="fixed top-[32px] left-0 w-full z-40 bg-background border-b border-outline-variant flex items-center justify-between px-margin-edge h-action-bar-height">
+<div class="flex items-center gap-3">
+<span class="material-symbols-outlined text-primary">terminal</span>
+<span class="font-headline text-headline text-primary tracking-tighter">~/root/usr/settings</span>
+</div>
+<div class="flex items-center">
+<button class="p-2 hover:bg-surface-variant text-primary transition-colors">
+<span class="material-symbols-outlined">close</span>
+</button>
+</div>
+</div>
+<!-- BottomNavBar (from Shared Components - as Terminal Footer) -->
+<nav class="fixed bottom-0 left-0 w-full z-50 h-[24px] bg-surface-container-lowest border-t border-outline-variant flex justify-between items-center px-4">
+<div class="flex items-center gap-4">
+<span class="font-label-caps text-[10px] text-on-surface-variant">▌ NORMAL │ profile</span>
+</div>
+<div class="flex items-center gap-4">
+<button class="flex items-center gap-1 group">
+<span class="font-label-caps text-[10px] text-on-surface-variant group-hover:text-primary">[ESC] back</span>
+</button>
+</div>
+</nav>
+<!-- Decorative CRT Scanline overlay line -->
+<div class="fixed top-0 left-0 w-full h-[1px] bg-primary opacity-20 pointer-events-none animate-pulse"></div>
+</body></html>

docs/ui-mockups/radial-menu-mobile.html

@@ -0,0 +1,271 @@
+<!DOCTYPE html>
+
+<html class="dark" lang="en"><head>
+<meta charset="utf-8"/>
+<meta content="width=device-width, initial-scale=1.0" name="viewport"/>
+<script src="https://cdn.tailwindcss.com?plugins=forms,container-queries"></script>
+<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&amp;family=Inter:wght@400;700&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<script id="tailwind-config">
+        tailwind.config = {
+            darkMode: "class",
+            theme: {
+                extend: {
+                    "colors": {
+                        "surface-variant": "#313538",
+                        "surface-dim": "#101417",
+                        "secondary-fixed-dim": "#bad073",
+                        "surface-bright": "#363a3d",
+                        "secondary-fixed": "#d5ec8c",
+                        "secondary-container": "#435401",
+                        "on-tertiary-fixed-variant": "#653173",
+                        "surface-container-highest": "#313538",
+                        "outline-variant": "#3f484e",
+                        "error": "#fb9fb1",
+                        "surface-container": "#202020",
+                        "inverse-on-surface": "#2d3134",
+                        "on-primary-fixed-variant": "#004c69",
+                        "outline": "#505050",
+                        "on-secondary": "#293500",
+                        "suit-red": "#fb9fb1",
+                        "inverse-primary": "#00668a",
+                        "on-secondary-container": "#b2c86d",
+                        "highlight-celebration": "#e1a3ee",
+                        "warning": "#ddb26f",
+                        "primary-fixed-dim": "#7ed0fe",
+                        "info": "#12cfc0",
+                        "primary-fixed": "#c4e7ff",
+                        "highlight-valid": "#acc267",
+                        "on-surface-variant": "#bfc8cf",
+                        "on-tertiary": "#4c195b",
+                        "background": "#101417",
+                        "tertiary-container": "#e1a3ee",
+                        "suit-black": "#d0d0d0",
+                        "on-error-container": "#ffdad6",
+                        "on-surface": "#d0d0d0",
+                        "primary": "#a1dcff",
+                        "error-container": "#93000a",
+                        "secondary": "#bad073",
+                        "surface": "#151515",
+                        "primary-container": "#6fc2ef",
+                        "suit-red-cb": "#6fc2ef",
+                        "on-primary": "#003549",
+                        "surface-container-low": "#181c1f",
+                        "tertiary-fixed-dim": "#f0b0fc",
+                        "surface-tint": "#7ed0fe",
+                        "on-tertiary-container": "#683476",
+                        "on-secondary-fixed": "#161e00",
+                        "surface-container-lowest": "#0b0f11",
+                        "on-tertiary-fixed": "#340043",
+                        "surface-container-high": "#272a2d",
+                        "on-error": "#690005",
+                        "tertiary-fixed": "#fbd7ff",
+                        "tertiary": "#f7c3ff",
+                        "on-background": "#e0e3e6",
+                        "on-secondary-fixed-variant": "#3c4d00",
+                        "on-primary-fixed": "#001e2c",
+                        "on-primary-container": "#004f6c",
+                        "inverse-surface": "#e0e3e6"
+                    },
+                    "borderRadius": {
+                        "DEFAULT": "0.125rem",
+                        "lg": "0.25rem",
+                        "xl": "0.5rem",
+                        "full": "0.75rem"
+                    },
+                    "spacing": {
+                        "action-bar-height": "64px",
+                        "stack-overlap": "2rem",
+                        "gutter-card": "0.375rem",
+                        "touch-target-min": "48dp",
+                        "margin-edge": "1rem"
+                    },
+                    "fontFamily": {
+                        "label-caps": ["JetBrains Mono"],
+                        "hud-timer": ["JetBrains Mono"],
+                        "hud-score": ["JetBrains Mono"],
+                        "body-md": ["Inter"],
+                        "headline": ["JetBrains Mono"],
+                        "card-rank": ["JetBrains Mono"]
+                    },
+                    "fontSize": {
+                        "label-caps": ["12px", {"lineHeight": "16px", "letterSpacing": "0.08em", "fontWeight": "500"}],
+                        "hud-timer": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+                        "hud-score": ["24px", {"lineHeight": "32px", "letterSpacing": "-0.02em", "fontWeight": "700"}],
+                        "body-md": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+                        "headline": ["28px", {"lineHeight": "32px", "letterSpacing": "-0.01em", "fontWeight": "700"}],
+                        "card-rank": ["18px", {"lineHeight": "18px", "fontWeight": "700"}]
+                    }
+                },
+            },
+        }
+    </script>
+<style>
+        .radial-segment {
+            clip-path: polygon(50% 50%, 100% 0, 100% 100%);
+        }
+        .material-symbols-outlined {
+            font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
+            display: inline-block;
+            vertical-align: middle;
+        }
+        .scanline-bg {
+            background: repeating-linear-gradient(
+                0deg,
+                rgba(26, 26, 26, 1) 0px,
+                rgba(26, 26, 26, 1) 2px,
+                rgba(21, 21, 21, 1) 2px,
+                rgba(21, 21, 21, 1) 4px
+            );
+        }
+    </style>
+<style>
+    body {
+      min-height: max(884px, 100dvh);
+    }
+  </style>
+  </head>
+<body class="bg-surface font-body-md text-on-surface select-none overflow-hidden h-screen w-screen flex flex-col">
+<!-- Underlying Game Tableau (Dimmed Background) -->
+<main class="relative flex-grow opacity-30 grid grid-cols-7 gap-2 p-margin-edge pointer-events-none">
+<!-- Top row: Foundation/Stock -->
+<div class="col-span-1 aspect-[2/3] border border-dashed border-outline-variant bg-surface-container flex items-center justify-center">
+<span class="material-symbols-outlined text-outline-variant">terminal</span>
+</div>
+<div class="col-span-1 aspect-[2/3] border border-dashed border-outline-variant"></div>
+<div class="col-span-1"></div>
+<div class="col-span-1 aspect-[2/3] border border-outline border-suit-red-cb flex items-center justify-center">
+<span class="material-symbols-outlined text-suit-red-cb">favorite</span>
+</div>
+<div class="col-span-1 aspect-[2/3] border border-outline border-suit-black flex items-center justify-center">
+<span class="material-symbols-outlined text-suit-black">backspace</span>
+</div>
+<div class="col-span-1 aspect-[2/3] border border-outline border-suit-red-cb flex items-center justify-center">
+<span class="material-symbols-outlined text-suit-red-cb">diamond</span>
+</div>
+<div class="col-span-1 aspect-[2/3] border border-outline border-suit-black flex items-center justify-center">
+<span class="material-symbols-outlined text-suit-black">spa</span>
+</div>
+<!-- Tableau piles -->
+<div class="col-span-7 grid grid-cols-7 gap-2 mt-4">
+<div class="space-y-[-120%]">
+<div class="aspect-[2/3] bg-surface-container-high border border-outline p-1 flex flex-col justify-between">
+<span class="font-card-rank text-card-rank text-suit-red-cb">K</span>
+<span class="material-symbols-outlined self-end text-3xl rotate-180 text-suit-red-cb">diamond</span>
+</div>
+</div>
+<div class="space-y-[-120%]">
+<div class="aspect-[2/3] scanline-bg border border-outline relative">
+<div class="absolute top-1 left-1 w-3 h-4 bg-primary"></div>
+<span class="absolute bottom-1 right-1 font-label-caps text-[10px] text-primary">▌RS</span>
+</div>
+<div class="aspect-[2/3] bg-surface-container-high border border-outline p-1 flex flex-col justify-between">
+<span class="font-card-rank text-card-rank text-suit-black">Q</span>
+<span class="material-symbols-outlined self-end text-3xl rotate-180 text-suit-black" style="font-variation-settings: 'FILL' 1;">spa</span>
+</div>
+</div>
+<div class="space-y-[-120%]">
+<div class="aspect-[2/3] scanline-bg border border-outline"></div>
+<div class="aspect-[2/3] scanline-bg border border-outline"></div>
+<div class="aspect-[2/3] bg-surface-container-high border border-outline p-1 flex flex-col justify-between">
+<span class="font-card-rank text-card-rank text-suit-red-cb">J</span>
+<span class="material-symbols-outlined self-end text-3xl rotate-180 text-suit-red-cb" style="font-variation-settings: 'FILL' 1;">favorite</span>
+</div>
+</div>
+<!-- More stacks... omitted for brevity as background -->
+</div>
+</main>
+<!-- Radial Menu Overlay -->
+<div class="fixed inset-0 z-50 bg-[#151515]/70 flex items-center justify-center overflow-hidden">
+<div class="relative w-[280px] h-[280px] flex items-center justify-center">
+<!-- Outer Circular Ring Shell -->
+<div class="absolute inset-0 rounded-full border border-outline bg-surface-container overflow-hidden">
+<!-- SVG Segments Construction -->
+<svg class="w-full h-full transform -rotate-22.5" viewbox="0 0 100 100">
+<!-- Slice 1 (UNDO) - Top / 12:00 -->
+<!-- Active state: bg-primary-container/15, stroke-primary -->
+<path d="M 50 50 L 50 0 A 50 50 0 0 1 85.35 14.65 Z" fill="#6fc2ef26" stroke="#6fc2ef" stroke-width="0.5" transform="rotate(-22.5, 50, 50)"></path>
+<!-- Slice 2 (REDO) -->
+<path d="M 50 50 L 85.35 14.65 A 50 50 0 0 1 100 50 Z" fill="transparent" stroke="#353535" stroke-width="0.25" transform="rotate(-22.5, 50, 50)"></path>
+<!-- Slice 3 (HINT) -->
+<path d="M 50 50 L 100 50 A 50 50 0 0 1 85.35 85.35 Z" fill="transparent" stroke="#353535" stroke-width="0.25" transform="rotate(-22.5, 50, 50)"></path>
+<!-- Slice 4 (AUTO) -->
+<path d="M 50 50 L 85.35 85.35 A 50 50 0 0 1 50 100 Z" fill="transparent" stroke="#353535" stroke-width="0.25" transform="rotate(-22.5, 50, 50)"></path>
+<!-- Slice 5 (NEW) -->
+<path d="M 50 50 L 50 100 A 50 50 0 0 1 14.65 85.35 Z" fill="transparent" stroke="#353535" stroke-width="0.25" transform="rotate(-22.5, 50, 50)"></path>
+<!-- Slice 6 (PAUSE) -->
+<path d="M 50 50 L 14.65 85.35 A 50 50 0 0 1 0 50 Z" fill="transparent" stroke="#353535" stroke-width="0.25" transform="rotate(-22.5, 50, 50)"></path>
+<!-- Slice 7 (STATS) -->
+<path d="M 50 50 L 0 50 A 50 50 0 0 1 14.65 14.65 Z" fill="transparent" stroke="#353535" stroke-width="0.25" transform="rotate(-22.5, 50, 50)"></path>
+<!-- Slice 8 (SETTINGS) -->
+<path d="M 50 50 L 14.65 14.65 A 50 50 0 0 1 50 0 Z" fill="transparent" stroke="#353535" stroke-width="0.25" transform="rotate(-22.5, 50, 50)"></path>
+</svg>
+</div>
+<!-- Labels and Icons Overlay -->
+<div class="absolute inset-0 pointer-events-none">
+<!-- 12:00 UNDO (ACTIVE) -->
+<div class="absolute top-[12%] left-1/2 -translate-x-1/2 flex flex-col items-center text-primary">
+<span class="material-symbols-outlined text-[24px]" data-icon="undo">undo</span>
+<span class="font-label-caps text-[11px] mt-1">UNDO</span>
+</div>
+<!-- 1:30 REDO -->
+<div class="absolute top-[22%] right-[12%] flex flex-col items-center text-on-surface">
+<span class="material-symbols-outlined text-[24px]" data-icon="redo">redo</span>
+<span class="font-label-caps text-[11px] mt-1">REDO</span>
+</div>
+<!-- 3:00 HINT -->
+<div class="absolute top-1/2 right-[8%] -translate-y-1/2 flex flex-col items-center text-on-surface">
+<span class="material-symbols-outlined text-[24px]" data-icon="lightbulb">lightbulb</span>
+<span class="font-label-caps text-[11px] mt-1">HINT</span>
+</div>
+<!-- 4:30 AUTO -->
+<div class="absolute bottom-[22%] right-[12%] flex flex-col items-center text-on-surface">
+<span class="material-symbols-outlined text-[24px]" data-icon="double_arrow">double_arrow</span>
+<span class="font-label-caps text-[11px] mt-1">AUTO</span>
+</div>
+<!-- 6:00 NEW -->
+<div class="absolute bottom-[12%] left-1/2 -translate-x-1/2 flex flex-col items-center text-on-surface">
+<span class="material-symbols-outlined text-[24px]" data-icon="add">add</span>
+<span class="font-label-caps text-[11px] mt-1">NEW</span>
+</div>
+<!-- 7:30 PAUSE -->
+<div class="absolute bottom-[22%] left-[12%] flex flex-col items-center text-on-surface">
+<span class="material-symbols-outlined text-[24px]" data-icon="pause">pause</span>
+<span class="font-label-caps text-[11px] mt-1">PAUSE</span>
+</div>
+<!-- 9:00 STATS -->
+<div class="absolute top-1/2 left-[8%] -translate-y-1/2 flex flex-col items-center text-on-surface">
+<span class="material-symbols-outlined text-[24px]" data-icon="bar_chart">bar_chart</span>
+<span class="font-label-caps text-[11px] mt-1">STATS</span>
+</div>
+<!-- 10:30 SETTINGS -->
+<div class="absolute top-[22%] left-[12%] flex flex-col items-center text-on-surface">
+<span class="material-symbols-outlined text-[24px]" data-icon="settings">settings</span>
+<span class="font-label-caps text-[11px] mt-1">SETTINGS</span>
+</div>
+</div>
+<!-- Inner Hole -->
+<div class="absolute w-20 h-20 rounded-full bg-surface-container border border-outline-variant flex flex-col items-center justify-center z-10">
+<div class="font-headline text-[32px] text-primary leading-none">▌</div>
+<div class="font-label-caps text-[10px] text-on-surface-variant tracking-widest mt-1">RADIAL</div>
+</div>
+</div>
+<!-- Instructions (Bottom Floating) -->
+<div class="absolute bottom-12 left-0 w-full flex flex-col items-center gap-4">
+<div class="font-label-caps text-[12px] text-on-surface-variant tracking-wider">
+                DRAG TO SELECT · RELEASE TO ACTIVATE
+            </div>
+<!-- Status Line (Vim style) -->
+<div class="w-full h-8 bg-surface-container border-t border-outline-variant flex items-center justify-center">
+<span class="font-label-caps text-[11px] text-on-surface-variant">
+<span class="text-primary">▌</span> NORMAL │ radial · 1/8 selected
+                </span>
+</div>
+</div>
+</div>
+<!-- Hidden image for standard requirement compliance, though not visually used in this specific overlay task -->
+<div class="hidden">
+<img data-alt="A macro shot of a vintage terminal screen displaying green computer code and technical data. The lighting is low-key, with a soft glow emanating from the screen, highlighting the CRT scanlines and subtle reflections. The aesthetic is purely technical and retro-futuristic, focusing on precision and high-contrast digital artifacts. Deep blacks and vibrant green neon tones dominate the color palette, evoking a high-performance system environment." src="https://lh3.googleusercontent.com/aida-public/AB6AXuAQuJUCOQev_BN72KyX0c-ylmW3DMZD-gOUlylYo3w1SrSpGnvorMvSUwe5oGPAgBgc050cCowC8f1QaxHEDN-DUkyCynOLhzrZHXyCJh2ebCWd6x1quLQwp0ffwbHsZW1-J2zAMuUydMNpEVmpHFQDij0yjVg6lxc6JdsC0etMoAWMhb61S3HUoDffSl-Q23N8Oc77r3dSf6kLFKAMAJCbXFz4nTaJKCKAwtMs62pLr6fd1jzMZrItH43RaO28uzMzvnGGZj3Miw"/>
+</div>
+</body></html>

docs/ui-mockups/replay-overlay-mobile.html

@@ -0,0 +1,284 @@
+<!DOCTYPE html>
+
+<html class="dark" lang="en"><head>
+<meta charset="utf-8"/>
+<meta content="width=device-width, initial-scale=1.0" name="viewport"/>
+<title>Solitaire Replay Overlay</title>
+<script src="https://cdn.tailwindcss.com?plugins=forms,container-queries"></script>
+<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&amp;family=Inter:wght@400;500&amp;family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<script id="tailwind-config">
+        tailwind.config = {
+            darkMode: "class",
+            theme: {
+                extend: {
+                    "colors": {
+                        "on-background": "#e0e3e6",
+                        "suit-red-cb": "#6fc2ef",
+                        "surface-container": "#202020",
+                        "primary": "#a1dcff",
+                        "tertiary-fixed-dim": "#f0b0fc",
+                        "on-tertiary-fixed-variant": "#653173",
+                        "surface-tint": "#7ed0fe",
+                        "outline": "#505050",
+                        "suit-black": "#d0d0d0",
+                        "secondary": "#bad073",
+                        "on-surface": "#d0d0d0",
+                        "on-primary": "#003549",
+                        "on-error-container": "#ffdad6",
+                        "on-secondary-fixed-variant": "#3c4d00",
+                        "surface-bright": "#363a3d",
+                        "surface-variant": "#313538",
+                        "secondary-container": "#435401",
+                        "surface-container-highest": "#313538",
+                        "surface-container-low": "#181c1f",
+                        "primary-container": "#6fc2ef",
+                        "on-error": "#690005",
+                        "primary-fixed-dim": "#7ed0fe",
+                        "tertiary-container": "#e1a3ee",
+                        "on-tertiary-container": "#683476",
+                        "suit-red": "#fb9fb1",
+                        "highlight-celebration": "#e1a3ee",
+                        "on-primary-fixed-variant": "#004c69",
+                        "secondary-fixed": "#d5ec8c",
+                        "primary-fixed": "#c4e7ff",
+                        "on-primary-container": "#004f6c",
+                        "secondary-fixed-dim": "#bad073",
+                        "warning": "#ddb26f",
+                        "on-secondary": "#293500",
+                        "info": "#12cfc0",
+                        "on-tertiary-fixed": "#340043",
+                        "background": "#101417",
+                        "surface-container-high": "#272a2d",
+                        "surface-dim": "#101417",
+                        "surface": "#151515",
+                        "inverse-surface": "#e0e3e6",
+                        "on-surface-variant": "#bfc8cf",
+                        "error-container": "#93000a",
+                        "tertiary": "#f7c3ff",
+                        "inverse-primary": "#00668a",
+                        "surface-container-lowest": "#0b0f11",
+                        "inverse-on-surface": "#2d3134",
+                        "on-primary-fixed": "#001e2c",
+                        "highlight-valid": "#acc267",
+                        "outline-variant": "#3f484e",
+                        "tertiary-fixed": "#fbd7ff",
+                        "on-secondary-fixed": "#161e00",
+                        "error": "#fb9fb1",
+                        "on-tertiary": "#4c195b",
+                        "on-secondary-container": "#b2c86d"
+                    },
+                    "borderRadius": {
+                        "DEFAULT": "0.125rem",
+                        "lg": "0.25rem",
+                        "xl": "0.5rem",
+                        "full": "0.75rem"
+                    },
+                    "spacing": {
+                        "touch-target-min": "48dp",
+                        "stack-overlap": "2rem",
+                        "margin-edge": "1rem",
+                        "action-bar-height": "64px",
+                        "gutter-card": "0.375rem"
+                    },
+                    "fontFamily": {
+                        "hud-timer": ["JetBrains Mono"],
+                        "body-md": ["Inter"],
+                        "label-caps": ["JetBrains Mono"],
+                        "hud-score": ["JetBrains Mono"],
+                        "headline": ["JetBrains Mono"],
+                        "card-rank": ["JetBrains Mono"]
+                    },
+                    "fontSize": {
+                        "hud-timer": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+                        "body-md": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+                        "label-caps": ["12px", {"lineHeight": "16px", "letterSpacing": "0.08em", "fontWeight": "500"}],
+                        "hud-score": ["24px", {"lineHeight": "32px", "letterSpacing": "-0.02em", "fontWeight": "700"}],
+                        "headline": ["28px", {"lineHeight": "32px", "letterSpacing": "-0.01em", "fontWeight": "700"}],
+                        "card-rank": ["18px", {"lineHeight": "18px", "fontWeight": "700"}]
+                    }
+                },
+            },
+        }
+    </script>
+<style>
+        .material-symbols-outlined {
+            font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
+        }
+        .card-back-pattern {
+            background-color: #151515;
+            background-image: repeating-linear-gradient(0deg, transparent, transparent 2px, #1a1a1a 2px, #1a1a1a 4px);
+        }
+        /* Custom mechanical transition style */
+        .mechanical-transition {
+            transition: all 120ms cubic-bezier(0.4, 0, 0.2, 1);
+        }
+    </style>
+<style>
+    body {
+      min-height: max(884px, 100dvh);
+    }
+  </style>
+  </head>
+<body class="bg-surface text-on-surface font-body-md select-none overflow-hidden flex flex-col h-[844px] w-[390px] mx-auto border-x border-outline-variant">
+<!-- Status Bar -->
+<header class="h-8 bg-surface-container flex items-center justify-between px-4 border-b border-outline-variant flex-shrink-0">
+<div class="flex items-center gap-2">
+<span class="text-primary font-headline text-[14px]">▌replay.tsx</span>
+</div>
+<div class="flex items-center text-on-surface-variant font-label-caps text-[10px] tracking-wider uppercase">
+            GAME #2024-127 · 87 MOVES
+        </div>
+</header>
+<!-- Game Peek Band (Tableau) -->
+<main class="h-[240px] relative bg-background overflow-hidden border-b border-outline-variant">
+<!-- 7-Column Tableau (Dimmed 50%) -->
+<div class="absolute inset-0 opacity-50 flex justify-around p-2 gap-1">
+<!-- Tableau Columns 1-7 -->
+<div class="flex-1 flex flex-col items-center">
+<div class="w-full aspect-[2/3] border border-dashed border-outline-variant mb-1"></div>
+<div class="w-full aspect-[2/3] bg-surface-container-low border border-outline"></div>
+</div>
+<div class="flex-1 flex flex-col items-center">
+<div class="w-full aspect-[2/3] bg-surface-container-low border border-outline"></div>
+</div>
+<div class="flex-1 flex flex-col items-center">
+<div class="w-full aspect-[2/3] bg-surface-container-low border border-outline"></div>
+</div>
+<div class="flex-1 flex flex-col items-center">
+<div class="w-full aspect-[2/3] bg-surface-container-low border border-outline"></div>
+</div>
+<div class="flex-1 flex flex-col items-center">
+<div class="w-full aspect-[2/3] bg-surface-container-low border border-outline"></div>
+</div>
+<div class="flex-1 flex flex-col items-center">
+<div class="w-full aspect-[2/3] bg-surface-container-low border border-outline"></div>
+</div>
+<div class="flex-1 flex flex-col items-center">
+<div class="w-full aspect-[2/3] bg-surface-container-low border border-outline relative">
+<!-- Central Focused Card (Move 47) -->
+<div class="absolute inset-0 z-20 opacity-100">
+<!-- Shadow-less highlight using glow outline -->
+<div class="w-full h-full bg-[#1a1a1a] border border-suit-red-cb ring-2 ring-suit-red-cb/40 flex flex-col justify-between p-1">
+<div class="flex flex-col">
+<span class="font-card-rank text-card-rank text-suit-red-cb">4</span>
+<span class="material-symbols-outlined text-[14px] text-suit-red-cb" data-icon="diamond">diamond</span>
+</div>
+<div class="self-end rotate-180 flex flex-col">
+<span class="font-card-rank text-card-rank text-suit-red-cb">4</span>
+<span class="material-symbols-outlined text-[14px] text-suit-red-cb" data-icon="diamond">diamond</span>
+</div>
+</div>
+<!-- Move Chip -->
+<div class="absolute -top-6 left-1/2 -translate-x-1/2 bg-suit-red-cb px-2 py-0.5 rounded-sm">
+<span class="text-surface font-label-caps text-[9px] font-bold">MOVE 47/87</span>
+</div>
+</div>
+</div>
+</div>
+</div>
+</main>
+<!-- Playback Toolbar -->
+<div class="h-16 bg-surface-container flex items-center justify-between px-4 border-b border-outline-variant">
+<!-- Left: Timer -->
+<div class="flex flex-col">
+<span class="text-on-surface font-hud-timer text-[18px] font-bold leading-none">00:42</span>
+<span class="text-[11px] text-[#a0a0a0] font-label-caps tracking-tighter">/ 02:18</span>
+</div>
+<!-- Center: Controls -->
+<div class="flex items-center gap-4">
+<button class="material-symbols-outlined text-on-surface-variant hover:text-primary mechanical-transition" data-icon="skip_previous">skip_previous</button>
+<button class="material-symbols-outlined text-on-surface-variant hover:text-primary mechanical-transition" data-icon="arrow_left">arrow_left</button>
+<button class="material-symbols-outlined text-suit-red-cb text-[32px] mechanical-transition" data-icon="play_arrow">play_arrow</button>
+<button class="material-symbols-outlined text-on-surface-variant hover:text-primary mechanical-transition" data-icon="arrow_right">arrow_right</button>
+<button class="material-symbols-outlined text-on-surface-variant hover:text-primary mechanical-transition" data-icon="skip_next">skip_next</button>
+</div>
+<!-- Right: Speed -->
+<div class="flex items-center bg-surface-variant border border-outline px-2 py-1 gap-1">
+<span class="font-label-caps text-[14px] font-bold text-on-surface">1.0x</span>
+<span class="material-symbols-outlined text-[16px] text-on-surface-variant" data-icon="unfold_more">unfold_more</span>
+</div>
+</div>
+<!-- Scrub Bar Area -->
+<div class="px-margin-edge pt-6 pb-8 bg-surface-container-low border-b border-outline-variant">
+<div class="relative w-full h-1 bg-outline rounded-full">
+<!-- Cyan Progress Track -->
+<div class="absolute left-0 top-0 h-full bg-suit-red-cb" style="width: 54%;"></div>
+<!-- Notches & Labels -->
+<div class="absolute inset-0 flex justify-between">
+<div class="relative">
+<div class="w-[1px] h-3 bg-outline -mt-1"></div>
+<span class="absolute -bottom-5 left-1/2 -translate-x-1/2 text-[9px] font-label-caps text-outline">0%</span>
+</div>
+<div class="relative">
+<div class="w-[1px] h-3 bg-outline -mt-1"></div>
+<span class="absolute -bottom-5 left-1/2 -translate-x-1/2 text-[9px] font-label-caps text-outline">25%</span>
+</div>
+<div class="relative">
+<div class="w-[1px] h-3 bg-outline -mt-1"></div>
+<span class="absolute -bottom-5 left-1/2 -translate-x-1/2 text-[9px] font-label-caps text-outline">50%</span>
+</div>
+<div class="relative">
+<div class="w-[1px] h-3 bg-outline -mt-1"></div>
+<span class="absolute -bottom-5 left-1/2 -translate-x-1/2 text-[9px] font-label-caps text-outline">75%</span>
+</div>
+<div class="relative">
+<div class="w-[1px] h-3 bg-outline -mt-1"></div>
+<span class="absolute -bottom-5 left-1/2 -translate-x-1/2 text-[9px] font-label-caps text-outline">100%</span>
+</div>
+</div>
+<!-- Current Marker (54%) -->
+<div class="absolute top-1/2 -translate-y-1/2 w-3 h-3 bg-suit-red-cb border border-surface" style="left: 54%;"></div>
+<div class="absolute -top-4 left-[54%] -translate-x-1/2 text-[10px] text-suit-red-cb font-label-caps font-bold">47/87</div>
+<!-- Win Marker (72%) -->
+<div class="absolute top-0 w-[2px] h-3 bg-highlight-valid -translate-y-1" style="left: 72%;"></div>
+<div class="absolute -bottom-5 left-[72%] -translate-x-1/2 text-[8px] text-highlight-valid font-label-caps font-bold whitespace-nowrap">WIN MOVE</div>
+</div>
+</div>
+<!-- Move Log Card -->
+<section class="flex-1 bg-surface-container p-4 overflow-y-auto">
+<h3 class="font-label-caps text-label-caps text-on-surface-variant mb-4 flex items-center gap-2">
+<span class="w-1.5 h-3 bg-primary block"></span>
+            MOVE LOG · 47/87
+        </h3>
+<div class="flex flex-col font-label-caps text-[12px]">
+<!-- Log Rows -->
+<div class="flex items-center h-6 px-2 text-[#a0a0a0] border-b border-outline-variant/30">
+<span class="w-8">44 |</span>
+<span>5♥ → tableau col 3</span>
+</div>
+<div class="flex items-center h-6 px-2 text-[#a0a0a0] border-b border-outline-variant/30">
+<span class="w-8">45 |</span>
+<span>8♣ → tableau col 1</span>
+</div>
+<div class="flex items-center h-6 px-2 text-[#a0a0a0] border-b border-outline-variant/30">
+<span class="w-8">46 |</span>
+<span>stock cycle</span>
+</div>
+<!-- Highlighted Active Move -->
+<div class="flex items-center h-6 px-2 bg-suit-red-cb text-surface-container font-bold">
+<span class="w-8">▶ 47 |</span>
+<span>4♦ → 5♣ on col 7</span>
+</div>
+<div class="flex items-center h-6 px-2 text-on-surface border-b border-outline-variant/30">
+<span class="w-8">48 |</span>
+<span class="material-symbols-outlined text-[14px] align-middle mr-1" data-icon="foundation">foundation</span> A♠ → foundation
+            </div>
+<div class="flex items-center h-6 px-2 text-on-surface border-b border-outline-variant/30">
+<span class="w-8">49 |</span>
+<span class="material-symbols-outlined text-[14px] align-middle mr-1" data-icon="foundation">foundation</span> 2♠ → foundation
+            </div>
+</div>
+</section>
+<!-- Footer -->
+<footer class="h-6 bg-surface-container flex items-center justify-between px-4 border-t border-outline-variant flex-shrink-0 text-[10px] font-label-caps tracking-wider">
+<div class="text-on-surface-variant">
+<span class="text-primary">▌</span> NORMAL │ replay
+        </div>
+<div class="text-on-surface-variant opacity-70">
+            [SPACE] play · [← →] scrub · [ESC]
+        </div>
+</footer>
+<!-- Overlay Background (For visualization of depth) -->
+<div class="fixed inset-0 pointer-events-none border-[16px] border-surface-dim/40 z-50"></div>
+</body></html>

docs/ui-mockups/settings-mobile.html

@@ -0,0 +1,258 @@
+<!DOCTYPE html>
+
+<html class="dark" lang="en"><head>
+<meta charset="utf-8"/>
+<meta content="width=device-width, initial-scale=1.0" name="viewport"/>
+<script src="https://cdn.tailwindcss.com?plugins=forms,container-queries"></script>
+<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&amp;family=Inter:wght@400;500;700&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<script id="tailwind-config">
+        tailwind.config = {
+            darkMode: "class",
+            theme: {
+                extend: {
+                    "colors": {
+                        "on-secondary": "#293500",
+                        "surface-container": "#1c2023",
+                        "on-primary-fixed": "#001e2c",
+                        "surface-tint": "#7ed0fe",
+                        "suit-black": "#d0d0d0",
+                        "on-background": "#e0e3e6",
+                        "tertiary-fixed": "#fbd7ff",
+                        "on-tertiary": "#4c195b",
+                        "on-error": "#690005",
+                        "secondary-fixed-dim": "#bad073",
+                        "tertiary-fixed-dim": "#f0b0fc",
+                        "suit-red-cb": "#6fc2ef",
+                        "on-primary-container": "#004f6c",
+                        "on-error-container": "#ffdad6",
+                        "surface-container-lowest": "#0b0f11",
+                        "on-surface": "#e0e3e6",
+                        "secondary-container": "#435401",
+                        "inverse-on-surface": "#2d3134",
+                        "suit-red": "#fb9fb1",
+                        "tertiary": "#f7c3ff",
+                        "surface-dim": "#101417",
+                        "background": "#101417",
+                        "error": "#fb9fb1",
+                        "on-secondary-container": "#b2c86d",
+                        "on-primary": "#003549",
+                        "on-tertiary-container": "#683476",
+                        "surface-container-low": "#181c1f",
+                        "warning": "#ddb26f",
+                        "surface-variant": "#313538",
+                        "primary-fixed": "#c4e7ff",
+                        "primary": "#a1dcff",
+                        "on-secondary-fixed-variant": "#3c4d00",
+                        "surface": "#151515",
+                        "secondary": "#bad073",
+                        "outline-variant": "#3f484e",
+                        "on-tertiary-fixed-variant": "#653173",
+                        "highlight-valid": "#acc267",
+                        "primary-fixed-dim": "#7ed0fe",
+                        "surface-bright": "#363a3d",
+                        "secondary-fixed": "#d5ec8c",
+                        "primary-container": "#6fc2ef",
+                        "surface-container-highest": "#313538",
+                        "on-secondary-fixed": "#161e00",
+                        "surface-container-high": "#272a2d",
+                        "inverse-primary": "#00668a",
+                        "on-tertiary-fixed": "#340043",
+                        "tertiary-container": "#e1a3ee",
+                        "on-surface-variant": "#bfc8cf",
+                        "highlight-celebration": "#e1a3ee",
+                        "inverse-surface": "#e0e3e6",
+                        "outline": "#505050",
+                        "info": "#12cfc0",
+                        "on-primary-fixed-variant": "#004c69",
+                        "error-container": "#93000a"
+                    },
+                    "borderRadius": {
+                        "DEFAULT": "0.125rem",
+                        "lg": "0.25rem",
+                        "xl": "0.5rem",
+                        "full": "0.75rem"
+                    },
+                    "spacing": {
+                        "gutter-card": "0.375rem",
+                        "stack-overlap": "2rem",
+                        "margin-edge": "1rem",
+                        "touch-target-min": "48dp",
+                        "action-bar-height": "64px",
+                        "top-action-bar-height": "32px",
+                        "bottom-action-bar-height": "24px"
+                    },
+                    "fontFamily": {
+                        "body-md": ["Inter"],
+                        "label-caps": ["JetBrains Mono"],
+                        "card-rank": ["JetBrains Mono"],
+                        "hud-timer": ["JetBrains Mono"],
+                        "hud-score": ["JetBrains Mono"],
+                        "headline": ["JetBrains Mono"]
+                    },
+                    "fontSize": {
+                        "body-md": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+                        "label-caps": ["12px", {"lineHeight": "16px", "letterSpacing": "0.08em", "fontWeight": "500"}],
+                        "card-rank": ["18px", {"lineHeight": "18px", "fontWeight": "700"}],
+                        "hud-timer": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+                        "hud-score": ["24px", {"lineHeight": "32px", "letterSpacing": "-0.02em", "fontWeight": "700"}],
+                        "headline": ["28px", {"lineHeight": "32px", "letterSpacing": "-0.01em", "fontWeight": "700"}]
+                    }
+                },
+            },
+        }
+    </script>
+<style>
+        .material-symbols-outlined {
+            font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
+            display: inline-block;
+            line-height: 1;
+            text-transform: none;
+            letter-spacing: normal;
+            word-wrap: normal;
+            white-space: nowrap;
+            direction: ltr;
+        }
+        .card-back-pattern {
+            background: repeating-linear-gradient(
+                0deg,
+                #151515,
+                #151515 2px,
+                #1a1a1a 2px,
+                #1a1a1a 4px
+            );
+        }
+    </style>
+<style>
+    body {
+      min-height: max(884px, 100dvh);
+    }
+  </style>
+  </head>
+<body class="bg-background text-on-background font-body-md selection:bg-primary selection:text-on-primary-container overflow-hidden flex flex-col h-[844px] w-[390px] mx-auto border-x border-outline-variant">
+<!-- Status Bar / TopAppBar Logic -->
+<header class="bg-[#202020] h-8 flex items-center justify-between px-4 w-full z-50">
+<div class="flex items-center gap-1">
+<span class="text-primary font-headline text-[12px]">▌</span>
+<span class="text-on-surface font-label-caps text-[12px]">settings.toml</span>
+</div>
+<div class="text-outline font-label-caps text-[12px]">v0.20.0</div>
+</header>
+<!-- NavigationDrawer (Tab Strip Mapping) -->
+<nav class="bg-[#1a1a1a] h-10 border-b border-[#353535] flex items-center w-full">
+<!-- COSMETIC Tab (Active) -->
+<div class="h-full flex-1 flex flex-col items-center justify-center relative">
+<span class="text-primary font-label-caps text-[12px] px-2">[ COSMETIC ]</span>
+<div class="absolute bottom-0 left-0 right-0 h-[2px] bg-primary"></div>
+</div>
+<!-- GAMEPLAY Tab -->
+<div class="h-full flex-1 flex items-center justify-center">
+<span class="text-[#a0a0a0] font-label-caps text-[12px]">GAMEPLAY</span>
+</div>
+<!-- SYNC Tab -->
+<div class="h-full flex-1 flex items-center justify-center">
+<span class="text-[#a0a0a0] font-label-caps text-[12px]">SYNC</span>
+</div>
+<!-- AUDIO Tab -->
+<div class="h-full flex-1 flex items-center justify-center">
+<span class="text-[#a0a0a0] font-label-caps text-[12px]">AUDIO</span>
+</div>
+</nav>
+<!-- Content Area (Canvas) -->
+<main class="flex-1 bg-[#151515] p-margin-edge overflow-y-auto space-y-2">
+<!-- row: card_theme -->
+<div class="bg-[#202020] h-14 rounded-[4px] px-3 flex items-center justify-between">
+<div class="flex flex-col">
+<span class="text-[#a0a0a0] font-label-caps text-[11px]">card_theme</span>
+<span class="text-suit-black font-label-caps text-[14px]">Terminal</span>
+</div>
+<span class="text-primary material-symbols-outlined" data-icon="arrow_forward">arrow_forward</span>
+</div>
+<!-- row: background -->
+<div class="bg-[#202020] h-14 rounded-[4px] px-3 flex items-center justify-between">
+<div class="flex flex-col">
+<span class="text-[#a0a0a0] font-label-caps text-[11px]">background</span>
+<span class="text-suit-black font-label-caps text-[14px]">Solid #151515</span>
+</div>
+<span class="text-primary material-symbols-outlined" data-icon="arrow_forward">arrow_forward</span>
+</div>
+<!-- row: card_back -->
+<div class="bg-[#202020] h-14 rounded-[4px] px-3 flex items-center justify-between">
+<div class="flex flex-col">
+<span class="text-[#a0a0a0] font-label-caps text-[11px]">card_back</span>
+<span class="text-suit-black font-label-caps text-[14px]">Terminal</span>
+</div>
+<div class="flex items-center gap-3">
+<div class="w-4 h-6 border border-outline card-back-pattern relative overflow-hidden">
+<div class="absolute top-0.5 left-0.5 w-1.5 h-2 bg-primary"></div>
+</div>
+<span class="text-primary material-symbols-outlined" data-icon="arrow_forward">arrow_forward</span>
+</div>
+</div>
+<!-- row: color_blind_mode -->
+<div class="bg-[#202020] h-14 rounded-[4px] px-3 flex items-center justify-between">
+<div class="flex flex-col">
+<span class="text-[#a0a0a0] font-label-caps text-[11px]">color_blind_mode</span>
+<span class="text-suit-black font-label-caps text-[14px]">false</span>
+</div>
+<!-- Toggle OFF -->
+<div class="w-10 h-5 bg-[#202020] border border-outline rounded-full relative">
+<div class="absolute left-0.5 top-0.5 w-3.5 h-3.5 bg-outline rounded-full"></div>
+</div>
+</div>
+<!-- row: high_contrast -->
+<div class="bg-[#202020] h-14 rounded-[4px] px-3 flex items-center justify-between">
+<div class="flex flex-col">
+<span class="text-[#a0a0a0] font-label-caps text-[11px]">high_contrast</span>
+<span class="text-suit-black font-label-caps text-[14px]">false</span>
+</div>
+<!-- Toggle OFF -->
+<div class="w-10 h-5 bg-[#202020] border border-outline rounded-full relative">
+<div class="absolute left-0.5 top-0.5 w-3.5 h-3.5 bg-outline rounded-full"></div>
+</div>
+</div>
+<!-- row: reduce_motion -->
+<div class="bg-[#202020] h-14 rounded-[4px] px-3 flex items-center justify-between">
+<div class="flex flex-col">
+<span class="text-[#a0a0a0] font-label-caps text-[11px]">reduce_motion</span>
+<span class="text-suit-black font-label-caps text-[14px]">true</span>
+</div>
+<!-- Toggle ON -->
+<div class="w-10 h-5 bg-[#1f3a4a] border border-primary/50 rounded-full relative">
+<div class="absolute right-0.5 top-0.5 w-3.5 h-3.5 bg-primary-container rounded-full"></div>
+</div>
+</div>
+<!-- row: crt_scanline_effect -->
+<div class="bg-[#202020] h-14 rounded-[4px] px-3 flex items-center justify-between">
+<div class="flex flex-col">
+<span class="text-[#a0a0a0] font-label-caps text-[11px]">crt_scanline_effect</span>
+<span class="text-suit-black font-label-caps text-[14px]">false</span>
+</div>
+<!-- Toggle OFF -->
+<div class="w-10 h-5 bg-[#202020] border border-outline rounded-full relative">
+<div class="absolute left-0.5 top-0.5 w-3.5 h-3.5 bg-outline rounded-full"></div>
+</div>
+</div>
+</main>
+<!-- BottomNavBar (Footer Logic) -->
+<footer class="h-6 bg-[#202020] border-t border-[#353535] flex items-center justify-between px-4 w-full z-50">
+<div class="flex items-center gap-1 font-label-caps text-[11px]">
+<span class="text-primary">▌</span>
+<span class="text-suit-black">NORMAL</span>
+<span class="text-outline">│</span>
+<span class="text-on-surface">settings</span>
+</div>
+<div class="flex items-center gap-2 font-label-caps text-[11px]">
+<div class="flex items-center">
+<span class="text-[#a0a0a0]">[1-4]</span>
+<span class="text-outline ml-1">tab</span>
+</div>
+<span class="text-outline">·</span>
+<div class="flex items-center">
+<span class="text-[#a0a0a0]">[ESC]</span>
+<span class="text-outline ml-1">back</span>
+</div>
+</div>
+</footer>
+</body></html>

docs/ui-mockups/splash-mobile.html

@@ -0,0 +1,213 @@
+<!DOCTYPE html>
+
+<html class="dark" lang="en"><head>
+<meta charset="utf-8"/>
+<meta content="width=device-width, initial-scale=1.0" name="viewport"/>
+<title>Rusty Solitaire - Terminal Edition</title>
+<script src="https://cdn.tailwindcss.com?plugins=forms,container-queries"></script>
+<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&amp;family=Inter:wght@400;500;700&amp;family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<script id="tailwind-config">
+        tailwind.config = {
+            darkMode: "class",
+            theme: {
+                extend: {
+                    "colors": {
+                        "primary-fixed": "#c4e7ff",
+                        "on-tertiary-fixed": "#340043",
+                        "surface-dim": "#101417",
+                        "on-error": "#690005",
+                        "inverse-primary": "#00668a",
+                        "highlight-celebration": "#e1a3ee",
+                        "surface-variant": "#313538",
+                        "on-background": "#e0e3e6",
+                        "secondary-fixed": "#d5ec8c",
+                        "surface-bright": "#363a3d",
+                        "on-primary-container": "#004f6c",
+                        "on-surface": "#d0d0d0",
+                        "surface-container-lowest": "#0b0f11",
+                        "on-tertiary-container": "#683476",
+                        "surface-container-high": "#272a2d",
+                        "error": "#fb9fb1",
+                        "highlight-valid": "#acc267",
+                        "primary-container": "#6fc2ef",
+                        "on-secondary": "#293500",
+                        "tertiary-fixed-dim": "#f0b0fc",
+                        "on-primary-fixed": "#001e2c",
+                        "outline-variant": "#3f484e",
+                        "secondary-container": "#435401",
+                        "background": "#101417",
+                        "on-primary-fixed-variant": "#004c69",
+                        "suit-black": "#d0d0d0",
+                        "surface-container": "#1c2023",
+                        "on-primary": "#003549",
+                        "primary": "#a1dcff",
+                        "error-container": "#93000a",
+                        "on-tertiary-fixed-variant": "#653173",
+                        "info": "#12cfc0",
+                        "warning": "#ddb26f",
+                        "tertiary-container": "#e1a3ee",
+                        "tertiary-fixed": "#fbd7ff",
+                        "on-tertiary": "#4c195b",
+                        "surface": "#151515",
+                        "secondary-fixed-dim": "#bad073",
+                        "on-secondary-fixed-variant": "#3c4d00",
+                        "surface-container-highest": "#313538",
+                        "inverse-on-surface": "#2d3134",
+                        "suit-red": "#fb9fb1",
+                        "surface-container-low": "#181c1f",
+                        "on-secondary-container": "#b2c86d",
+                        "on-error-container": "#ffdad6",
+                        "tertiary": "#f7c3ff",
+                        "suit-red-cb": "#6fc2ef",
+                        "inverse-surface": "#e0e3e6",
+                        "surface-tint": "#7ed0fe",
+                        "primary-fixed-dim": "#7ed0fe",
+                        "outline": "#505050",
+                        "on-surface-variant": "#bfc8cf",
+                        "secondary": "#bad073",
+                        "on-secondary-fixed": "#161e00",
+                        "boot-cyan": "#a1dcff",
+                        "boot-lime": "#acc267"
+                    },
+                    "borderRadius": {
+                        "DEFAULT": "0.125rem",
+                        "lg": "0.25rem",
+                        "xl": "0.5rem",
+                        "full": "0.75rem"
+                    },
+                    "spacing": {
+                        "stack-overlap": "2rem",
+                        "action-bar-height": "64px",
+                        "margin-edge": "1rem",
+                        "gutter-card": "0.375rem"
+                    },
+                    "fontFamily": {
+                        "hud-timer": ["JetBrains Mono"],
+                        "body-md": ["Inter"],
+                        "card-rank": ["JetBrains Mono"],
+                        "label-caps": ["JetBrains Mono"],
+                        "headline": ["JetBrains Mono"],
+                        "hud-score": ["JetBrains Mono"]
+                    },
+                    "fontSize": {
+                        "hud-timer": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+                        "body-md": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+                        "card-rank": ["18px", {"lineHeight": "18px", "fontWeight": "700"}],
+                        "label-caps": ["12px", {"lineHeight": "16px", "letterSpacing": "0.08em", "fontWeight": "500"}],
+                        "headline": ["28px", {"lineHeight": "32px", "letterSpacing": "-0.01em", "fontWeight": "700"}],
+                        "hud-score": ["24px", {"lineHeight": "32px", "letterSpacing": "-0.02em", "fontWeight": "700"}]
+                    }
+                },
+            },
+        }
+    </script>
+<style>
+        body {
+            background-color: #151515;
+            color: #d0d0d0;
+            margin: 0;
+            padding: 0;
+            height: 100vh;
+            overflow: hidden;
+            -webkit-font-smoothing: antialiased;
+        }
+        .material-symbols-outlined {
+            font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
+        }
+        .cyan-halo {
+            box-shadow: 0 0 40px 4px rgba(161, 220, 255, 0.15);
+        }
+        .scanlines {
+            background: linear-gradient(to bottom, rgba(21, 21, 21, 0) 50%, rgba(0, 0, 0, 0.2) 50%);
+            background-size: 100% 4px;
+            pointer-events: none;
+        }
+    </style>
+<style>
+    body {
+      min-height: max(884px, 100dvh);
+    }
+  </style>
+  </head>
+<body class="flex flex-col items-center justify-between font-body-md w-[390px] h-[844px] mx-auto relative overflow-hidden">
+<div class="absolute inset-0 scanlines opacity-30 z-10"></div>
+<!-- Top Safe Area (Blank) -->
+<div class="h-10 w-full"></div>
+<!-- Main Content Stack -->
+<main class="flex-1 w-full flex flex-col items-center z-20">
+<!-- Header Section (~30% Top) -->
+<div class="mt-[10%] flex flex-col items-center">
+<div class="w-24 h-24 flex items-center justify-center relative mb-4">
+<div class="text-[96px] text-boot-cyan font-headline cyan-halo leading-none">▌</div>
+</div>
+<div class="flex flex-col items-center">
+<h1 class="font-headline text-[32px] font-bold text-on-surface tracking-tight mb-1">RUSTY SOLITAIRE</h1>
+<div class="w-48 h-[1px] bg-outline-variant"></div>
+<span class="font-label-caps text-[12px] text-outline mt-2 tracking-[0.1em] uppercase">TERMINAL EDITION</span>
+</div>
+</div>
+<!-- Terminal Boot Log (~60% Top Position) -->
+<div class="mt-48 w-[70%] flex flex-col items-start font-hud-timer text-[11px] space-y-1">
+<div class="flex items-center gap-2">
+<span class="text-boot-lime">✓</span>
+<span class="text-outline">assets loaded</span>
+</div>
+<div class="flex items-center gap-2">
+<span class="text-boot-lime">✓</span>
+<span class="text-outline">theme: terminal</span>
+</div>
+<div class="flex items-center gap-2">
+<span class="text-boot-lime">✓</span>
+<span class="text-outline">progress restored</span>
+</div>
+<div class="flex items-center gap-1 mt-1">
+<span class="text-on-surface-variant">▌ ready_</span>
+<span class="w-[6px] h-3 bg-boot-cyan animate-pulse"></span>
+</div>
+</div>
+<!-- Progress Bar (~75% Top Position) -->
+<div class="mt-20 w-full px-8">
+<div class="w-full h-[1px] bg-surface-container-highest relative">
+<div class="absolute top-0 left-0 h-full bg-boot-cyan w-full"></div>
+</div>
+<div class="w-full text-right mt-2">
+<span class="font-label-caps text-[10px] text-outline tracking-wider uppercase">DONE · 247 ASSETS</span>
+</div>
+</div>
+</main>
+<!-- Bottom Strip & Footer -->
+<footer class="w-full flex flex-col items-center z-20 pb-10">
+<div class="flex flex-col items-center mb-8">
+<span class="font-label-caps text-[9px] text-outline mb-3 tracking-widest uppercase">BASE16-EIGHTIES</span>
+<div class="flex gap-1.5">
+<div class="w-3 h-3 bg-[#fb9fb1]"></div>
+<div class="w-3 h-3 bg-[#ddb26f]"></div>
+<div class="w-3 h-3 bg-[#acc267]"></div>
+<div class="w-3 h-3 bg-[#12cfc0]"></div>
+<div class="w-3 h-3 bg-[#6fc2ef]"></div>
+<div class="w-3 h-3 bg-[#e1a3ee]"></div>
+<div class="w-3 h-3 bg-[#d0d0d0]"></div>
+<div class="w-3 h-3 bg-[#505050]"></div>
+</div>
+</div>
+<div class="font-hud-timer text-[11px] text-outline">
+            v0.20.0
+        </div>
+</footer>
+<!-- Top App Bar Content (Hidden as per requirement, but following Shared Components Logic) -->
+<div class="hidden">
+<header class="fixed top-0 w-full z-50 flex justify-between items-center px-margin-edge h-action-bar-height border-b border-outline-variant bg-background">
+<div class="font-headline text-headline text-primary uppercase tracking-tighter">ROOT@SOLITAIRE:~</div>
+<div class="flex gap-4 text-primary">
+<span class="material-symbols-outlined">memory</span>
+<span class="material-symbols-outlined">settings_ethernet</span>
+<span class="material-symbols-outlined">wifi_tethering</span>
+</div>
+</header>
+</div>
+<!-- Placeholder for data-alt requirements even if visual images are minimal -->
+<div class="hidden">
+<img data-alt="A cinematic, low-angle digital render of a retro-terminal interface appearing on a high-end mobile display in a dark room. The screen glows with a soft cyan light, illuminating a minimalist layout with sharp, 1px white lines and a large block cursor symbol. The atmosphere is quiet, technical, and high-performance, reflecting a dark-mode synthwave aesthetic with muted grays and vibrant cyan accents. The focus is on the crisp, high-density typography and the mechanical precision of the digital environment." src="https://lh3.googleusercontent.com/aida-public/AB6AXuBeZymuyGd_-VJr-zgC8p08qBLD4pk0WyRtxuIhVT5kY6cc3y_qSkZ-P_EYYwKIliGysN5rDgqbCsXLxksfslVnB4nj4BYktu4d5EAKi1zEQ8t8MId17UzIgKujbGqebDo0FWO51Snqxt9AvrjX_afEsvACaaeAyIfTKgoAB8MBOUnanIre26Y1tNTftn1y9jxKfrXgi9eCYiJn6zoiaRmNmdLwo_s7RenmSlloPdIURVb3KKHKaBZHldPaStbWcyMYNR877R6O_A"/>
+</div>
+</body></html>

docs/ui-mockups/stats-mobile.html

@@ -0,0 +1,279 @@
+<!DOCTYPE html>
+
+<html class="dark" lang="en"><head>
+<meta charset="utf-8"/>
+<meta content="width=device-width, initial-scale=1.0" name="viewport"/>
+<script src="https://cdn.tailwindcss.com?plugins=forms,container-queries"></script>
+<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&amp;family=Inter:wght@400;500;600&amp;family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<style>
+    .material-symbols-outlined {
+      font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
+    }
+    /* CRT Scanline effect overlay */
+    .crt-overlay::before {
+      content: " ";
+      display: block;
+      position: absolute;
+      top: 0;
+      left: 0;
+      bottom: 0;
+      right: 0;
+      background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.1) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.02), rgba(0, 255, 0, 0.01), rgba(0, 0, 255, 0.02));
+      z-index: 100;
+      background-size: 100% 2px, 3px 100%;
+      pointer-events: none;
+    }
+  </style>
+<script id="tailwind-config">
+    tailwind.config = {
+      darkMode: "class",
+      theme: {
+        extend: {
+          "colors": {
+            "tertiary": "#f7c3ff",
+            "surface-container": "#202020",
+            "primary-container": "#6fc2ef",
+            "surface": "#151515",
+            "tertiary-fixed": "#fbd7ff",
+            "info": "#12cfc0",
+            "inverse-on-surface": "#2d3134",
+            "suit-red": "#fb9fb1",
+            "secondary-fixed-dim": "#bad073",
+            "on-background": "#e0e3e6",
+            "tertiary-container": "#e1a3ee",
+            "suit-black": "#d0d0d0",
+            "on-primary": "#003549",
+            "secondary-fixed": "#d5ec8c",
+            "tertiary-fixed-dim": "#f0b0fc",
+            "suit-red-cb": "#6fc2ef",
+            "primary": "#a1dcff",
+            "on-primary-container": "#004f6c",
+            "primary-fixed": "#c4e7ff",
+            "on-surface-variant": "#bfc8cf",
+            "surface-tint": "#7ed0fe",
+            "surface-dim": "#101417",
+            "on-tertiary-container": "#683476",
+            "inverse-primary": "#00668a",
+            "background": "#101417",
+            "on-surface": "#d0d0d0",
+            "primary-fixed-dim": "#7ed0fe",
+            "on-error": "#690005",
+            "surface-container-highest": "#313538",
+            "outline-variant": "#3f484e",
+            "inverse-surface": "#e0e3e6",
+            "warning": "#ddb26f",
+            "surface-variant": "#313538",
+            "on-tertiary-fixed": "#340043",
+            "outline": "#505050",
+            "surface-container-lowest": "#0b0f11",
+            "on-secondary-container": "#b2c86d",
+            "surface-container-high": "#272a2d",
+            "secondary": "#bad073",
+            "error": "#fb9fb1",
+            "highlight-valid": "#acc267",
+            "surface-container-low": "#181c1f",
+            "on-secondary": "#293500",
+            "surface-bright": "#363a3d",
+            "on-secondary-fixed": "#161e00",
+            "on-error-container": "#ffdad6",
+            "highlight-celebration": "#e1a3ee",
+            "on-primary-fixed-variant": "#004c69",
+            "on-tertiary": "#4c195b",
+            "on-primary-fixed": "#001e2c",
+            "secondary-container": "#435401",
+            "error-container": "#93000a",
+            "on-tertiary-fixed-variant": "#653173",
+            "on-secondary-fixed-variant": "#3c4d00"
+          },
+          "borderRadius": {
+            "DEFAULT": "0.125rem",
+            "lg": "0.25rem",
+            "xl": "0.5rem",
+            "full": "0.75rem"
+          },
+          "spacing": {
+            "touch-target-min": "48dp",
+            "stack-overlap": "2rem",
+            "margin-edge": "1rem",
+            "action-bar-height": "64px",
+            "gutter-card": "0.375rem"
+          },
+          "fontFamily": {
+            "hud-timer": ["JetBrains Mono"],
+            "headline": ["JetBrains Mono"],
+            "card-rank": ["JetBrains Mono"],
+            "body-md": ["Inter"],
+            "hud-score": ["JetBrains Mono"],
+            "label-caps": ["JetBrains Mono"]
+          },
+          "fontSize": {
+            "hud-timer": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+            "headline": ["28px", {"lineHeight": "32px", "letterSpacing": "-0.01em", "fontWeight": "700"}],
+            "card-rank": ["18px", {"lineHeight": "18px", "fontWeight": "700"}],
+            "body-md": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+            "hud-score": ["24px", {"lineHeight": "32px", "letterSpacing": "-0.02em", "fontWeight": "700"}],
+            "label-caps": ["12px", {"lineHeight": "16px", "letterSpacing": "0.08em", "fontWeight": "500"}]
+          }
+        },
+      },
+    }
+  </script>
+<style>
+    body {
+      min-height: max(884px, 100dvh);
+    }
+  </style>
+  </head>
+<body class="bg-surface text-on-surface font-body-md min-h-screen selection:bg-primary-container selection:text-on-primary-container">
+<!-- Top Navigation Shell -->
+<header class="fixed top-0 w-full bg-background z-50 border-b border-outline flex justify-between items-center px-margin-edge h-action-bar-height">
+<div class="flex items-center gap-2">
+<span class="material-symbols-outlined text-primary" data-icon="terminal">terminal</span>
+<h1 class="font-headline text-headline text-primary uppercase tracking-tighter">STATISTICS.LOG</h1>
+</div>
+<div class="flex items-center">
+<button class="material-symbols-outlined text-on-surface-variant hover:bg-surface-container-highest transition-colors duration-120 p-2 rounded" data-icon="settings_input_component">settings_input_component</button>
+</div>
+</header>
+<main class="pt-action-bar-height pb-[88px] crt-overlay">
+<!-- Status Bar (Emulated Retro Style) -->
+<div class="h-[32px] bg-surface-container flex items-center justify-between px-margin-edge text-[11px] font-hud-timer">
+<span class="text-on-surface">▌stats.log</span>
+<span class="text-on-surface-variant">247 GAMES TRACKED</span>
+</div>
+<!-- Sub-tab Strip -->
+<nav class="h-[40px] bg-[#1a1a1a] border-b border-outline flex items-center px-margin-edge overflow-x-auto whitespace-nowrap scrollbar-hide">
+<div class="flex items-center h-full gap-4">
+<button class="h-full px-1 flex flex-col justify-center font-label-caps text-[11px] text-primary-container border-b-2 border-primary-container">
+          [ OVERVIEW ]
+        </button>
+<button class="h-full px-1 flex flex-col justify-center font-label-caps text-[11px] text-on-surface-variant hover:text-primary transition-colors">
+          DRAW-1
+        </button>
+<button class="h-full px-1 flex flex-col justify-center font-label-caps text-[11px] text-on-surface-variant hover:text-primary transition-colors">
+          DRAW-3
+        </button>
+<button class="h-full px-1 flex flex-col justify-center font-label-caps text-[11px] text-on-surface-variant hover:text-primary transition-colors">
+          DAILY
+        </button>
+</div>
+</nav>
+<!-- Main Content Grid -->
+<section class="p-4 flex flex-col gap-4">
+<!-- Hero Stat Card -->
+<div class="h-24 bg-surface-container border border-outline rounded-lg p-4 flex justify-between items-center">
+<div>
+<span class="font-headline text-[48px] text-on-surface">61%</span>
+</div>
+<div class="text-right">
+<p class="font-label-caps text-[11px] text-on-surface-variant">WIN RATE</p>
+<p class="font-hud-timer text-[13px] text-highlight-valid">▲ +3% vs last 30</p>
+</div>
+</div>
+<!-- 2x2 Grid -->
+<div class="grid grid-cols-2 gap-2">
+<div class="h-[88px] bg-surface-container border border-outline rounded-lg p-3 flex flex-col justify-between">
+<p class="font-label-caps text-[11px] text-on-surface-variant">GAMES</p>
+<p class="font-hud-score text-hud-score">247</p>
+</div>
+<div class="h-[88px] bg-surface-container border border-outline rounded-lg p-3 flex flex-col justify-between">
+<p class="font-label-caps text-[11px] text-on-surface-variant">WINS</p>
+<p class="font-hud-score text-hud-score">151</p>
+</div>
+<div class="h-[88px] bg-surface-container border border-outline rounded-lg p-3 flex flex-col justify-between">
+<p class="font-label-caps text-[11px] text-on-surface-variant">BEST TIME</p>
+<p class="font-hud-score text-hud-score text-primary">01:54</p>
+</div>
+<div class="h-[88px] bg-surface-container border border-outline rounded-lg p-3 flex flex-col justify-between">
+<p class="font-label-caps text-[11px] text-on-surface-variant">STREAK</p>
+<p class="font-hud-score text-hud-score">12</p>
+</div>
+</div>
+<!-- Sparkline Card -->
+<div class="bg-surface-container border border-outline rounded-lg p-4 h-[200px] flex flex-col">
+<p class="font-label-caps text-[11px] text-on-surface-variant mb-4">WIN RATE · LAST 30 DAYS</p>
+<div class="relative flex-1 flex items-end justify-between border-b border-outline pb-1">
+<!-- Y-Axis Labels -->
+<span class="absolute top-0 left-0 text-[9px] font-hud-timer text-outline">100%</span>
+<span class="absolute bottom-1 left-0 text-[9px] font-hud-timer text-outline">0%</span>
+<!-- Pixel Bar Chart -->
+<div class="flex items-end justify-between w-full h-[80%] gap-[2px]">
+<!-- Generated bars with upward trend -->
+<div class="bg-primary-container w-full" style="height: 35%"></div>
+<div class="bg-primary-container w-full" style="height: 30%"></div>
+<div class="bg-primary-container w-full" style="height: 40%"></div>
+<div class="bg-primary-container w-full" style="height: 38%"></div>
+<div class="bg-primary-container w-full" style="height: 45%"></div>
+<div class="bg-primary-container w-full" style="height: 42%"></div>
+<div class="bg-primary-container w-full" style="height: 50%"></div>
+<div class="bg-primary-container w-full" style="height: 48%"></div>
+<div class="bg-primary-container w-full" style="height: 55%"></div>
+<div class="bg-primary-container w-full" style="height: 52%"></div>
+<div class="bg-primary-container w-full" style="height: 58%"></div>
+<div class="bg-primary-container w-full" style="height: 60%"></div>
+<div class="bg-primary-container w-full" style="height: 55%"></div>
+<div class="bg-primary-container w-full" style="height: 62%"></div>
+<div class="bg-primary-container w-full" style="height: 65%"></div>
+<div class="bg-primary-container w-full" style="height: 63%"></div>
+<div class="bg-primary-container w-full" style="height: 68%"></div>
+<div class="bg-primary-container w-full" style="height: 70%"></div>
+<div class="bg-primary-container w-full" style="height: 65%"></div>
+<div class="bg-primary-container w-full" style="height: 72%"></div>
+<div class="bg-primary-container w-full" style="height: 75%"></div>
+<div class="bg-primary-container w-full" style="height: 78%"></div>
+<div class="bg-primary-container w-full" style="height: 74%"></div>
+<div class="bg-primary-container w-full" style="height: 80%"></div>
+<div class="bg-primary-container w-full" style="height: 82%"></div>
+<div class="bg-primary-container w-full" style="height: 85%"></div>
+<div class="bg-primary-container w-full" style="height: 88%"></div>
+<div class="bg-primary-container w-full" style="height: 86%"></div>
+<div class="bg-primary-container w-full" style="height: 90%"></div>
+<div class="bg-primary-container w-full" style="height: 95%"></div>
+</div>
+</div>
+<div class="flex justify-between mt-1">
+<span class="text-[9px] font-hud-timer text-outline uppercase">30d ago</span>
+<span class="text-[9px] font-hud-timer text-outline uppercase">today</span>
+</div>
+</div>
+<!-- Draw-Mode Split Card -->
+<div class="h-20 bg-surface-container border border-outline rounded-lg p-4 flex flex-col justify-between">
+<p class="font-label-caps text-[11px] text-on-surface-variant">DRAW MODE SPLIT</p>
+<div class="h-3 w-full flex rounded-sm overflow-hidden bg-outline">
+<div class="h-full bg-highlight-valid" style="width: 60%"></div>
+<div class="h-full bg-primary-container" style="width: 40%"></div>
+</div>
+<div class="flex justify-between">
+<span class="font-hud-timer text-[11px] text-highlight-valid">DRAW-1 · 60%</span>
+<span class="font-hud-timer text-[11px] text-primary-container">DRAW-3 · 40%</span>
+</div>
+</div>
+</section>
+<!-- Retro Footer Strip -->
+<footer class="h-[24px] px-margin-edge flex items-center justify-between font-hud-timer text-[10px] text-outline mt-2">
+<div>▌ NORMAL │ stats</div>
+<div>[1-4] view</div>
+</footer>
+</main>
+<!-- Bottom Navigation Shell -->
+<nav class="fixed bottom-0 w-full z-50 h-[64px] bg-surface-container border-t border-outline flex justify-around items-center">
+<div class="flex flex-col items-center justify-center text-on-surface-variant pt-1 hover:text-primary transition-colors duration-120">
+<span class="material-symbols-outlined" data-icon="playing_cards">playing_cards</span>
+<span class="font-label-caps text-label-caps">DECK</span>
+</div>
+<!-- ACTIVE TAB: STATS -->
+<div class="flex flex-col items-center justify-center text-primary border-t-2 border-primary pt-1 hover:text-primary transition-colors duration-120">
+<span class="material-symbols-outlined" data-icon="query_stats" style="font-variation-settings: 'FILL' 1;">query_stats</span>
+<span class="font-label-caps text-label-caps">STATS</span>
+</div>
+<div class="flex flex-col items-center justify-center text-on-surface-variant pt-1 hover:text-primary transition-colors duration-120">
+<span class="material-symbols-outlined" data-icon="history_edu">history_edu</span>
+<span class="font-label-caps text-label-caps">LOGS</span>
+</div>
+<div class="flex flex-col items-center justify-center text-on-surface-variant pt-1 hover:text-primary transition-colors duration-120">
+<span class="material-symbols-outlined" data-icon="terminal">terminal</span>
+<span class="font-label-caps text-label-caps">SYS</span>
+</div>
+</nav>
+</body></html>

docs/ui-mockups/sync-mobile.html

@@ -0,0 +1,262 @@
+<!DOCTYPE html>
+
+<html class="dark" lang="en"><head>
+<meta charset="utf-8"/>
+<meta content="width=device-width, initial-scale=1.0" name="viewport"/>
+<title>Rusty Solitaire - Sync Progress</title>
+<script src="https://cdn.tailwindcss.com?plugins=forms,container-queries"></script>
+<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&amp;family=Inter:wght@400;500&amp;family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<script id="tailwind-config">
+        tailwind.config = {
+            darkMode: "class",
+            theme: {
+                extend: {
+                    "colors": {
+                        "surface-container-low": "#181c1f",
+                        "highlight-valid": "#acc267",
+                        "on-secondary-container": "#b2c86d",
+                        "on-tertiary": "#4c195b",
+                        "suit-black": "#d0d0d0",
+                        "surface-container": "#1c2023",
+                        "warning": "#ddb26f",
+                        "outline": "#505050",
+                        "error-container": "#93000a",
+                        "on-secondary": "#293500",
+                        "surface-dim": "#101417",
+                        "on-primary-fixed": "#001e2c",
+                        "secondary": "#bad073",
+                        "on-surface": "#e0e3e6",
+                        "primary": "#a1dcff",
+                        "tertiary-fixed": "#fbd7ff",
+                        "on-tertiary-container": "#683476",
+                        "inverse-primary": "#00668a",
+                        "on-surface-variant": "#bfc8cf",
+                        "tertiary-fixed-dim": "#f0b0fc",
+                        "surface-tint": "#7ed0fe",
+                        "primary-container": "#6fc2ef",
+                        "on-primary-container": "#004f6c",
+                        "secondary-container": "#435401",
+                        "suit-red-cb": "#6fc2ef",
+                        "surface-container-high": "#272a2d",
+                        "on-background": "#e0e3e6",
+                        "on-primary": "#003549",
+                        "highlight-celebration": "#e1a3ee",
+                        "surface": "#151515",
+                        "secondary-fixed": "#d5ec8c",
+                        "on-primary-fixed-variant": "#004c69",
+                        "surface-container-lowest": "#0b0f11",
+                        "suit-red": "#fb9fb1",
+                        "inverse-on-surface": "#2d3134",
+                        "surface-variant": "#313538",
+                        "on-tertiary-fixed-variant": "#653173",
+                        "tertiary-container": "#e1a3ee",
+                        "outline-variant": "#3f484e",
+                        "inverse-surface": "#e0e3e6",
+                        "primary-fixed-dim": "#7ed0fe",
+                        "on-secondary-fixed": "#161e00",
+                        "info": "#12cfc0",
+                        "primary-fixed": "#c4e7ff",
+                        "surface-container-highest": "#313538",
+                        "on-tertiary-fixed": "#340043",
+                        "on-error": "#690005",
+                        "background": "#101417",
+                        "secondary-fixed-dim": "#bad073",
+                        "error": "#fb9fb1",
+                        "tertiary": "#f7c3ff",
+                        "on-error-container": "#ffdad6",
+                        "on-secondary-fixed-variant": "#3c4d00",
+                        "surface-bright": "#363a3d"
+                    },
+                    "borderRadius": {
+                        "DEFAULT": "0.125rem",
+                        "lg": "0.25rem",
+                        "xl": "0.5rem",
+                        "full": "0.75rem"
+                    },
+                    "spacing": {
+                        "touch-target-min": "48dp",
+                        "gutter-card": "0.375rem",
+                        "action-bar-height": "64px",
+                        "stack-overlap": "2rem",
+                        "margin-edge": "1rem"
+                    },
+                    "fontFamily": {
+                        "hud-timer": ["JetBrains Mono"],
+                        "headline": ["JetBrains Mono"],
+                        "card-rank": ["JetBrains Mono"],
+                        "label-caps": ["JetBrains Mono"],
+                        "hud-score": ["JetBrains Mono"],
+                        "body-md": ["Inter"]
+                    },
+                    "fontSize": {
+                        "hud-timer": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+                        "headline": ["28px", {"lineHeight": "32px", "letterSpacing": "-0.01em", "fontWeight": "700"}],
+                        "card-rank": ["18px", {"lineHeight": "18px", "fontWeight": "700"}],
+                        "label-caps": ["12px", {"lineHeight": "16px", "letterSpacing": "0.08em", "fontWeight": "500"}],
+                        "hud-score": ["24px", {"lineHeight": "32px", "letterSpacing": "-0.02em", "fontWeight": "700"}],
+                        "body-md": ["16px", {"lineHeight": "24px", "fontWeight": "400"}]
+                    }
+                },
+            },
+        }
+    </script>
+<style>
+        .material-symbols-outlined {
+            font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
+            display: inline-block;
+            vertical-align: middle;
+        }
+        .scanline {
+            background: linear-gradient(to bottom, transparent 50%, rgba(0, 0, 0, 0.1) 50%);
+            background-size: 100% 2px;
+            pointer-events: none;
+        }
+    </style>
+<style>
+    body {
+      min-height: max(884px, 100dvh);
+    }
+  </style>
+  </head>
+<body class="bg-surface text-on-surface font-body-md min-h-screen flex flex-col overflow-x-hidden selection:bg-primary-container selection:text-on-primary-container">
+<!-- 1. Status Bar (Top) -->
+<nav class="h-8 bg-[#202020] flex items-center justify-between px-4 border-b border-outline-variant z-50">
+<div class="flex items-center gap-2">
+<span class="font-headline text-[13px] tracking-tight text-on-surface-variant">▌sync.config</span>
+</div>
+<div class="flex items-center gap-3">
+<div class="flex items-center gap-1.5">
+<span class="w-2 h-2 rounded-full bg-warning animate-pulse"></span>
+<span class="font-label-caps text-[11px] text-warning">PENDING</span>
+</div>
+<span class="font-label-caps text-[11px] text-outline">v0.20.0</span>
+</div>
+</nav>
+<!-- Shared TopAppBar Component -->
+<header class="bg-surface flex justify-between items-center w-full px-margin-edge h-action-bar-height max-w-full border-b border-outline-variant">
+<div class="font-headline text-headline text-primary tracking-tighter uppercase">▌RS_TERMINAL_OS</div>
+<div class="hidden md:flex gap-6 items-center">
+<a class="font-label-caps text-label-caps uppercase tracking-widest text-on-surface-variant hover:text-primary transition-colors duration-120" href="#">PLAY</a>
+<a class="font-label-caps text-label-caps uppercase tracking-widest text-on-surface-variant hover:text-primary transition-colors duration-120" href="#">DAILY</a>
+<a class="font-label-caps text-label-caps uppercase tracking-widest text-primary border-b-2 border-primary pb-1" href="#">STATS</a>
+</div>
+<div class="flex gap-4">
+<span class="material-symbols-outlined text-primary cursor-pointer">account_circle</span>
+<span class="material-symbols-outlined text-primary cursor-pointer">sync</span>
+<span class="material-symbols-outlined text-primary cursor-pointer">settings</span>
+</div>
+</header>
+<main class="flex-grow p-4 md:p-8 max-w-3xl mx-auto w-full space-y-6">
+<!-- 2. Header Area -->
+<div class="h-20 flex flex-col justify-center border-l-2 border-outline-variant pl-4">
+<h1 class="font-headline text-[24px] font-bold text-suit-black leading-tight">SYNC PROGRESS</h1>
+<p class="font-body-md text-[12px] text-[#a0a0a0]">Connect to a server to sync games across devices.</p>
+</div>
+<!-- 3. Status Card -->
+<section class="bg-[#202020] rounded-[4px] p-4 border-l-[4px] border-warning flex flex-col gap-1">
+<h2 class="font-label-caps text-[10px] text-[#a0a0a0] uppercase tracking-widest">STATUS</h2>
+<div class="flex flex-col">
+<span class="font-headline text-[16px] font-bold text-[#a0a0a0]">○ NOT SIGNED IN</span>
+<span class="text-[11px] text-outline font-medium">Local progress only · Last attempt: never</span>
+</div>
+</section>
+<!-- 4. Login Form Card -->
+<section class="bg-[#202020] border border-outline-variant rounded-[4px] p-4 flex flex-col gap-5">
+<div class="flex items-center gap-2 border-b border-outline-variant pb-2 mb-1">
+<span class="font-headline text-[12px] text-[#a0a0a0] flex items-center">
+                    ▌ AUTH.toml <span class="ml-1 w-1.5 h-3 bg-primary-container animate-pulse"></span>
+</span>
+</div>
+<!-- Server URL -->
+<div class="flex flex-col gap-1.5">
+<label class="font-label-caps text-[10px] text-[#a0a0a0] uppercase tracking-widest">server_url</label>
+<div class="h-12 bg-[#1a1a1a] border border-outline-variant rounded-[2px] flex items-center px-4">
+<span class="font-headline text-[13px] text-suit-black">https://sync.rusty-solitaire.app</span>
+</div>
+</div>
+<!-- Email -->
+<div class="flex flex-col gap-1.5">
+<label class="font-label-caps text-[10px] text-[#a0a0a0] uppercase tracking-widest">email</label>
+<div class="h-12 bg-[#1a1a1a] border border-outline-variant rounded-[2px] flex items-center px-4">
+<span class="font-headline text-[13px] text-outline">/ user@example.com</span>
+</div>
+</div>
+<!-- Passcode -->
+<div class="flex flex-col gap-1.5">
+<label class="font-label-caps text-[10px] text-[#a0a0a0] uppercase tracking-widest">passcode</label>
+<div class="h-12 bg-[#1a1a1a] border border-outline-variant rounded-[2px] flex items-center justify-between px-4">
+<span class="font-headline text-[13px] text-outline">•••••••• (12 chars)</span>
+<span class="material-symbols-outlined text-outline cursor-pointer text-[18px]">visibility</span>
+</div>
+</div>
+</section>
+<!-- 5. Form Actions -->
+<div class="grid grid-cols-2 gap-4">
+<button class="h-12 bg-primary-container text-surface flex items-center justify-center rounded-[2px] font-headline text-[14px] font-bold active:scale-95 transition-transform">
+                ▶ SIGN IN
+            </button>
+<button class="h-12 border border-outline text-suit-black flex items-center justify-center rounded-[2px] font-headline text-[13px] font-medium hover:border-primary-container hover:text-primary-container transition-all">
+                + CREATE ACCOUNT
+            </button>
+</div>
+<!-- 6. Recent History Panel -->
+<section class="bg-[#202020] rounded-[4px] p-4 flex flex-col gap-3">
+<h2 class="font-label-caps text-[12px] text-[#a0a0a0] uppercase tracking-widest">RECENT</h2>
+<div class="space-y-2 border-l border-outline-variant pl-4">
+<div class="font-headline text-[11px] text-[#a0a0a0] flex items-center gap-2">
+<span class="text-outline">2026-05-07 17:38</span>
+<span class="text-outline">·</span>
+<span>○ no auth</span>
+<span class="text-outline">·</span>
+<span>skip</span>
+</div>
+<div class="font-headline text-[11px] text-[#a0a0a0] flex items-center gap-2">
+<span class="text-outline">2026-05-07 14:12</span>
+<span class="text-outline">·</span>
+<span>○ no auth</span>
+<span class="text-outline">·</span>
+<span>skip</span>
+</div>
+<div class="font-headline text-[11px] text-[#a0a0a0] flex items-center gap-2">
+<span class="text-outline">2026-05-06 09:01</span>
+<span class="text-outline">·</span>
+<span class="text-highlight-valid">✓ synced 12 games</span>
+</div>
+</div>
+</section>
+</main>
+<!-- 7. Footer -->
+<footer class="h-10 bg-surface border-t border-outline-variant flex items-center justify-between px-4 fixed bottom-0 w-full z-50">
+<div class="flex items-center gap-2 font-headline text-[11px]">
+<span class="text-primary-container">▌ NORMAL</span>
+<span class="text-outline">│</span>
+<span class="text-on-surface-variant">sync</span>
+</div>
+<div class="flex items-center gap-4 font-headline text-[11px] text-outline uppercase tracking-wider">
+<span>[ENTER] <span class="text-on-surface-variant">sign in</span></span>
+<span>[ESC] <span class="text-on-surface-variant">cancel</span></span>
+</div>
+</footer>
+<!-- Shared BottomNavBar Component (Mobile Only) -->
+<nav class="md:hidden fixed bottom-10 w-full z-50 flex justify-around items-center h-action-bar-height px-margin-edge bg-surface-container border-t border-outline-variant">
+<div class="flex flex-col items-center justify-center text-on-surface-variant p-2 hover:bg-surface-bright transition-all duration-120">
+<span class="material-symbols-outlined" data-icon="videogame_asset">videogame_asset</span>
+<span class="font-label-caps text-[10px] uppercase tracking-widest mt-1">F1_NEW_GAME</span>
+</div>
+<div class="flex flex-col items-center justify-center text-on-surface-variant p-2 hover:bg-surface-bright transition-all duration-120">
+<span class="material-symbols-outlined" data-icon="event_upcoming">event_upcoming</span>
+<span class="font-label-caps text-[10px] uppercase tracking-widest mt-1">F2_CHALLENGE</span>
+</div>
+<div class="flex flex-col items-center justify-center text-primary dark:text-primary-fixed-dim bg-surface-container-highest rounded-none p-2 transition-all duration-120 scale-95">
+<span class="material-symbols-outlined" data-icon="query_stats">query_stats</span>
+<span class="font-label-caps text-[10px] uppercase tracking-widest mt-1">F5_STATS</span>
+</div>
+<div class="flex flex-col items-center justify-center text-on-surface-variant p-2 hover:bg-surface-bright transition-all duration-120">
+<span class="material-symbols-outlined" data-icon="power_settings_new">power_settings_new</span>
+<span class="font-label-caps text-[10px] uppercase tracking-widest mt-1">ESC_EXIT</span>
+</div>
+</nav>
+<!-- Decorative Screen Texture -->
+<div class="fixed inset-0 pointer-events-none opacity-[0.03] scanline z-[100]"></div>
+</body></html>

docs/ui-mockups/theme-picker-mobile.html

@@ -0,0 +1,250 @@
+<!DOCTYPE html>
+
+<html class="dark" lang="en"><head>
+<meta charset="utf-8"/>
+<meta content="width=device-width, initial-scale=1.0" name="viewport"/>
+<script src="https://cdn.tailwindcss.com?plugins=forms,container-queries"></script>
+<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700;800&amp;family=Inter:wght@400;500;600&amp;family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<style>.material-symbols-outlined {
+    font-variation-settings: "FILL" 0, "wght" 400, "GRAD" 0, "opsz" 24
+    }
+.scanline-pattern {
+    background: repeating-linear-gradient(0deg, #1a1a1a, #1a1a1a 2px, #151515 2px, #151515 4px)
+    }
+.checker-pattern {
+    background-color: #001e2c;
+    background-image: radial-gradient(#a1dcff 10%, transparent 10%), radial-gradient(#a1dcff 10%, transparent 10%);
+    background-size: 8px 8px;
+    background-position: 0 0, 4px 4px
+    }
+.stripe-pattern {
+    background: repeating-linear-gradient(0deg, #fb9fb1, #fb9fb1 4px, #202020 4px, #202020 8px)
+    }
+.polka-pattern {
+    background-color: #001e2c;
+    background-image: radial-gradient(#e0e3e6 15%, transparent 15%);
+    background-size: 12px 12px
+    }
+.vintage-pattern {
+    background-color: #d5ec8c;
+    background-image: url(https://lh3.googleusercontent.com/aida-public/AB6AXuD8S9vQTpEh-DjYtjB5CUHqi2CO326ZEjVVLJoOqG1AA6b92NZ6ctGoD4yZHKV7oHJnSFdvp3z3Wei9zfTI2EGAdrQfHxFYJ-h1DaeiZQY3vTa5khIQ83Sf-bjz2xiudHsjs3RyhSKC5bHv2c8_9t6YjepJdQnJa4GelCetFEs_agpN6u2IfMS1M9RrGxGKLl4K18fj0Pg3BW8IptX_ladhVFR5Hk8F0Reu5WHY8eQt1Nr-p9NNXl-w3C9Jz0uGSxi_Wb7R771lgQ);
+    opacity: 0.8
+    }</style>
+<script id="tailwind-config">
+        tailwind.config = {
+          darkMode: "class",
+          theme: {
+            extend: {
+              "colors": {
+                      "surface-variant": "#313538",
+                      "on-error-container": "#ffdad6",
+                      "warning": "#ddb26f",
+                      "on-surface": "#e0e3e6",
+                      "inverse-on-surface": "#2d3134",
+                      "on-secondary-fixed": "#161e00",
+                      "on-error": "#690005",
+                      "on-primary-fixed": "#001e2c",
+                      "primary-container": "#6fc2ef",
+                      "secondary-fixed-dim": "#bad073",
+                      "tertiary": "#f7c3ff",
+                      "surface-dim": "#101417",
+                      "surface-container-low": "#181c1f",
+                      "on-surface-variant": "#bfc8cf",
+                      "surface-container": "#1c2023",
+                      "secondary-container": "#435401",
+                      "error": "#fb9fb1",
+                      "on-tertiary": "#4c195b",
+                      "surface-tint": "#7ed0fe",
+                      "error-container": "#93000a",
+                      "tertiary-fixed": "#fbd7ff",
+                      "info": "#12cfc0",
+                      "tertiary-fixed-dim": "#f0b0fc",
+                      "highlight-valid": "#acc267",
+                      "on-primary": "#003549",
+                      "inverse-surface": "#e0e3e6",
+                      "primary": "#a1dcff",
+                      "surface-container-high": "#272a2d",
+                      "background": "#101417",
+                      "surface-container-lowest": "#0b0f11",
+                      "suit-red": "#fb9fb1",
+                      "suit-red-cb": "#6fc2ef",
+                      "surface": "#151515",
+                      "primary-fixed": "#c4e7ff",
+                      "outline": "#505050",
+                      "on-secondary": "#293500",
+                      "surface-container-highest": "#313538",
+                      "secondary-fixed": "#d5ec8c",
+                      "on-primary-container": "#004f6c",
+                      "suit-black": "#d0d0d0",
+                      "on-primary-fixed-variant": "#004c69",
+                      "on-tertiary-container": "#683476",
+                      "secondary": "#bad073",
+                      "highlight-celebration": "#e1a3ee",
+                      "on-tertiary-fixed": "#340043",
+                      "on-tertiary-fixed-variant": "#653173",
+                      "on-secondary-container": "#b2c86d",
+                      "surface-bright": "#363a3d",
+                      "primary-fixed-dim": "#7ed0fe",
+                      "on-secondary-fixed-variant": "#3c4d00",
+                      "inverse-primary": "#00668a",
+                      "outline-variant": "#3f484e",
+                      "on-background": "#e0e3e6",
+                      "tertiary-container": "#e1a3ee"
+              },
+              "borderRadius": {
+                      "DEFAULT": "0.125rem",
+                      "lg": "0.25rem",
+                      "xl": "0.5rem",
+                      "full": "0.75rem"
+              },
+              "spacing": {
+                      "stack-overlap": "2rem",
+                      "gutter-card": "0.375rem",
+                      "touch-target-min": "48dp",
+                      "action-bar-height": "64px",
+                      "margin-edge": "1rem"
+              },
+              "fontFamily": {
+                      "hud-score": ["JetBrains Mono"],
+                      "label-caps": ["JetBrains Mono"],
+                      "hud-timer": ["JetBrains Mono"],
+                      "card-rank": ["JetBrains Mono"],
+                      "headline": ["JetBrains Mono"],
+                      "body-md": ["Inter"]
+              },
+              "fontSize": {
+                      "hud-score": ["24px", {"lineHeight": "32px", "letterSpacing": "-0.02em", "fontWeight": "700"}],
+                      "label-caps": ["12px", {"lineHeight": "16px", "letterSpacing": "0.08em", "fontWeight": "500"}],
+                      "hud-timer": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+                      "card-rank": ["18px", {"lineHeight": "18px", "fontWeight": "700"}],
+                      "headline": ["28px", {"lineHeight": "32px", "letterSpacing": "-0.01em", "fontWeight": "700"}],
+                      "body-md": ["16px", {"lineHeight": "24px", "fontWeight": "400"}]
+              }
+            },
+          },
+        }
+    </script>
+<style>
+    body {
+      min-height: max(884px, 100dvh);
+    }
+  </style>
+  </head>
+<body class="bg-background text-on-surface selection:bg-primary-container selection:text-on-primary-container min-h-screen flex flex-col font-body-md overflow-x-hidden">
+<!-- TopAppBar Semantic Shell -->
+<header class="fixed top-0 w-full z-50 flex justify-between items-center h-[32px] px-margin-edge bg-surface-container border-b border-outline-variant">
+<div class="flex items-center gap-2">
+<span class="material-symbols-outlined text-[16px] text-primary" data-icon="terminal">terminal</span>
+<span class="font-headline text-[14px] font-bold text-on-surface">▌theme.picker</span>
+</div>
+<div class="flex items-center gap-2 cursor-pointer hover:opacity-80 transition-opacity">
+<span class="font-label-caps text-[12px] text-on-surface-variant uppercase">× CLOSE</span>
+</div>
+</header>
+<main class="mt-[32px] mb-[64px] flex-grow flex flex-col px-margin-edge py-6">
+<!-- Header Section -->
+<div class="flex justify-between items-start mb-8">
+<div class="flex-1">
+<h1 class="font-headline text-[24px] font-bold text-on-surface mb-1">CARD THEMES</h1>
+<p class="font-body-md text-[13px] text-on-surface-variant max-w-[280px]">Choose a card-face theme. Imported themes appear at the bottom.</p>
+</div>
+<div class="bg-surface-container-high px-2 py-1 border border-outline-variant">
+<span class="font-label-caps text-[11px] text-primary">5 INSTALLED</span>
+</div>
+</div>
+<!-- Theme Grid -->
+<div class="grid grid-cols-2 gap-4">
+<!-- Active Theme: Terminal -->
+<div class="relative flex flex-col bg-surface border-2 border-primary-container">
+<div class="aspect-[2.5/3.5] w-full p-2 overflow-hidden flex items-center justify-center bg-background">
+<!-- Card Preview -->
+<div class="w-24 h-36 bg-surface border border-primary-container scanline-pattern relative">
+<div class="absolute top-1 left-1 w-3 h-4 bg-primary-container"></div>
+<div class="absolute bottom-1 right-1 font-headline text-[10px] text-on-surface">▌RS</div>
+</div>
+</div>
+<div class="p-3 bg-surface-container-high border-t border-primary-container">
+<div class="flex justify-between items-center mb-1">
+<span class="font-headline text-[14px] font-bold truncate">Terminal</span>
+<span class="font-label-caps text-[10px] text-primary-container">✓ ACTIVE</span>
+</div>
+<span class="font-body-md text-[11px] text-on-surface-variant">by Rusty Solitaire</span>
+</div>
+</div>
+<!-- Theme: Classic -->
+<div class="relative flex flex-col bg-surface border border-outline">
+<div class="aspect-[2.5/3.5] w-full p-2 overflow-hidden flex items-center justify-center bg-background">
+<div class="w-24 h-36 bg-surface border border-outline checker-pattern"></div>
+</div>
+<div class="p-3 bg-surface-container-low border-t border-outline">
+<span class="font-headline text-[14px] font-bold block truncate">Classic</span>
+<span class="font-body-md text-[11px] text-on-surface-variant">by Rusty Solitaire</span>
+</div>
+</div>
+<!-- Theme: Stripes -->
+<div class="relative flex flex-col bg-surface border border-outline">
+<div class="aspect-[2.5/3.5] w-full p-2 overflow-hidden flex items-center justify-center bg-background">
+<div class="w-24 h-36 bg-surface border border-outline stripe-pattern"></div>
+</div>
+<div class="p-3 bg-surface-container-low border-t border-outline">
+<span class="font-headline text-[14px] font-bold block truncate">Stripes</span>
+<span class="font-body-md text-[11px] text-on-surface-variant">by hayeah</span>
+</div>
+</div>
+<!-- Theme: Polka -->
+<div class="relative flex flex-col bg-surface border border-outline">
+<div class="aspect-[2.5/3.5] w-full p-2 overflow-hidden flex items-center justify-center bg-background">
+<div class="w-24 h-36 bg-surface border border-outline polka-pattern"></div>
+</div>
+<div class="p-3 bg-surface-container-low border-t border-outline">
+<span class="font-headline text-[14px] font-bold block truncate">Polka</span>
+<span class="font-body-md text-[11px] text-on-surface-variant">by hayeah</span>
+</div>
+</div>
+<!-- Theme: Vintage -->
+<div class="relative flex flex-col bg-surface border border-outline">
+<div class="aspect-[2.5/3.5] w-full p-2 overflow-hidden flex items-center justify-center bg-background">
+<div class="w-24 h-36 bg-surface border border-outline vintage-pattern"></div>
+</div>
+<div class="p-3 bg-surface-container-low border-t border-outline">
+<span class="font-headline text-[14px] font-bold block truncate">Vintage</span>
+<span class="font-body-md text-[11px] text-on-surface-variant">by hayeah</span>
+</div>
+</div>
+<!-- Import Theme -->
+<div class="relative flex flex-col bg-surface border-2 border-dashed border-outline-variant hover:border-primary-container transition-colors cursor-pointer">
+<div class="aspect-[2.5/3.5] w-full flex flex-col items-center justify-center gap-3">
+<span class="material-symbols-outlined text-[32px] text-primary-container" data-icon="add">add</span>
+<span class="font-label-caps text-[10px] text-on-surface-variant tracking-widest text-center px-4">IMPORT FROM .ZIP</span>
+</div>
+<div class="p-3 bg-surface-container-low border-t border-outline-variant">
+<span class="font-headline text-[14px] font-bold block truncate">+ IMPORT THEME</span>
+<span class="font-body-md text-[11px] opacity-0">spacer</span>
+</div>
+</div>
+</div>
+</main>
+<!-- BottomNavBar Semantic Shell -->
+<footer class="fixed bottom-0 left-0 w-full h-[64px] z-50 bg-surface-container border-t border-outline-variant flex justify-between items-center px-margin-edge pb-safe">
+<div class="flex items-center gap-2">
+<span class="font-headline text-[14px] font-bold text-on-surface">▌ NORMAL</span>
+<span class="text-on-surface-variant">│</span>
+<span class="font-label-caps text-[12px] text-on-surface-variant">theme</span>
+</div>
+<div class="flex items-center gap-3">
+<div class="flex items-center">
+<span class="text-on-surface-variant font-label-caps text-[11px]">[ENTER]</span>
+<span class="text-on-surface-variant font-body-md text-[11px] ml-1">activate</span>
+</div>
+<div class="flex items-center">
+<span class="text-on-surface-variant font-label-caps text-[11px]">[I]</span>
+<span class="text-on-surface-variant font-body-md text-[11px] ml-1">import</span>
+</div>
+<div class="flex items-center">
+<span class="text-on-surface-variant font-label-caps text-[11px]">[ESC]</span>
+<span class="text-on-surface-variant font-body-md text-[11px] ml-1">back</span>
+</div>
+</div>
+</footer>
+</body></html>

docs/ui-mockups/time-attack-mobile.html

@@ -0,0 +1,215 @@
+<!DOCTYPE html>
+
+<html class="dark" lang="en"><head>
+<meta charset="utf-8"/>
+<meta content="width=device-width, initial-scale=1.0" name="viewport"/>
+<title>Rusty Solitaire - Time Attack Configuration</title>
+<script src="https://cdn.tailwindcss.com?plugins=forms,container-queries"></script>
+<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700;800&amp;family=Inter:wght@400;500&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<script id="tailwind-config">
+        tailwind.config = {
+            darkMode: "class",
+            theme: {
+                extend: {
+                    "colors": {
+                        "surface-tint": "#7ed0fe",
+                        "on-secondary-fixed-variant": "#3c4d00",
+                        "primary-container": "#6fc2ef",
+                        "surface-container-high": "#272a2d",
+                        "tertiary": "#f7c3ff",
+                        "suit-black": "#d0d0d0",
+                        "secondary-container": "#435401",
+                        "on-error-container": "#ffdad6",
+                        "on-surface-variant": "#bfc8cf",
+                        "surface-dim": "#101417",
+                        "on-primary-container": "#004f6c",
+                        "info": "#12cfc0",
+                        "outline-variant": "#3f484e",
+                        "surface": "#151515",
+                        "inverse-on-surface": "#2d3134",
+                        "surface-container-low": "#181c1f",
+                        "on-secondary-container": "#b2c86d",
+                        "on-primary-fixed-variant": "#004c69",
+                        "inverse-primary": "#00668a",
+                        "suit-red": "#fb9fb1",
+                        "tertiary-fixed": "#fbd7ff",
+                        "surface-container-lowest": "#0b0f11",
+                        "on-surface": "#d0d0d0",
+                        "on-secondary": "#293500",
+                        "error-container": "#93000a",
+                        "highlight-valid": "#acc267",
+                        "surface-container-highest": "#313538",
+                        "primary": "#a1dcff",
+                        "secondary-fixed": "#d5ec8c",
+                        "error": "#fb9fb1",
+                        "outline": "#505050",
+                        "tertiary-container": "#e1a3ee",
+                        "tertiary-fixed-dim": "#f0b0fc",
+                        "highlight-celebration": "#e1a3ee",
+                        "surface-container": "#202020",
+                        "on-primary": "#003549",
+                        "on-error": "#690005",
+                        "warning": "#ddb26f",
+                        "suit-red-cb": "#6fc2ef",
+                        "on-primary-fixed": "#001e2c",
+                        "on-secondary-fixed": "#161e00",
+                        "on-tertiary-fixed": "#340043",
+                        "on-background": "#e0e3e6",
+                        "on-tertiary": "#4c195b",
+                        "inverse-surface": "#e0e3e6",
+                        "secondary-fixed-dim": "#bad073",
+                        "on-tertiary-fixed-variant": "#653173",
+                        "background": "#101417",
+                        "surface-variant": "#313538",
+                        "secondary": "#bad073",
+                        "on-tertiary-container": "#683476",
+                        "surface-bright": "#363a3d",
+                        "primary-fixed-dim": "#7ed0fe",
+                        "primary-fixed": "#c4e7ff"
+                    },
+                    "borderRadius": {
+                        "DEFAULT": "0.125rem",
+                        "lg": "0.25rem",
+                        "xl": "0.5rem",
+                        "full": "0.75rem"
+                    },
+                    "spacing": {
+                        "margin-edge": "1rem",
+                        "touch-target-min": "48px",
+                        "stack-overlap": "2rem",
+                        "gutter-card": "0.375rem",
+                        "action-bar-height": "64px"
+                    },
+                    "fontFamily": {
+                        "label-caps": ["JetBrains Mono"],
+                        "hud-score": ["JetBrains Mono"],
+                        "headline": ["JetBrains Mono"],
+                        "card-rank": ["JetBrains Mono"],
+                        "body-md": ["Inter"],
+                        "hud-timer": ["JetBrains Mono"]
+                    },
+                    "fontSize": {
+                        "label-caps": ["12px", {"lineHeight": "16px", "letterSpacing": "0.08em", "fontWeight": "500"}],
+                        "hud-score": ["24px", {"lineHeight": "32px", "letterSpacing": "-0.02em", "fontWeight": "700"}],
+                        "headline": ["28px", {"lineHeight": "32px", "letterSpacing": "-0.01em", "fontWeight": "700"}],
+                        "card-rank": ["18px", {"lineHeight": "18px", "fontWeight": "700"}],
+                        "body-md": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+                        "hud-timer": ["16px", {"lineHeight": "24px", "fontWeight": "400"}]
+                    }
+                },
+            },
+        }
+    </script>
+<style>
+        body { background-color: #151515; color: #d0d0d0; }
+        .material-symbols-outlined {
+            font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
+        }
+        .scanline {
+            background: linear-gradient(to bottom, rgba(255,255,255,0) 50%, rgba(0,0,0,0.1) 50%);
+            background-size: 100% 4px;
+        }
+    </style>
+<style>
+    body {
+      min-height: max(884px, 100dvh);
+    }
+  </style>
+  </head>
+<body class="flex items-center justify-center min-h-screen">
+<!-- Mobile Container (390x844) -->
+<div class="w-[390px] h-[844px] bg-surface relative flex flex-col overflow-hidden border border-outline-variant">
+<!-- STATUS BAR -->
+<header class="h-8 bg-surface-container flex items-center justify-between px-4 z-10">
+<span class="font-headline text-[12px] tracking-tight text-primary">▌time-attack.tsx</span>
+<span class="font-label-caps text-[10px] text-on-surface-variant">MODE · TIMED</span>
+</header>
+<!-- TOP APP BAR (from JSON) -->
+<nav class="flex justify-between items-center w-full px-margin-edge h-action-bar-height max-w-full bg-surface text-primary font-headline text-headline font-bold border-b border-outline-variant">
+<div class="font-headline text-headline text-primary tracking-tighter uppercase">▌RS_TERMINAL_OS</div>
+<div class="flex gap-4">
+<span class="material-symbols-outlined cursor-pointer hover:text-primary-fixed transition-colors duration-120">account_circle</span>
+<span class="material-symbols-outlined cursor-pointer hover:text-primary-fixed transition-colors duration-120">sync</span>
+<span class="material-symbols-outlined cursor-pointer hover:text-primary-fixed transition-colors duration-120">settings</span>
+</div>
+</nav>
+<!-- MAIN CONTENT -->
+<main class="flex-1 px-4 py-4 flex flex-col gap-4 overflow-y-auto">
+<!-- HERO BAND -->
+<section class="flex flex-col items-center justify-center h-[100px] text-center">
+<h1 class="font-headline text-[32px] font-bold tracking-tighter text-on-surface uppercase">TIME ATTACK</h1>
+<p class="font-body-md text-[12px] text-on-surface-variant max-w-[280px]">Race the clock. The faster you finish, the higher your score.</p>
+</section>
+<!-- TIMER DISPLAY -->
+<section class="w-full h-[120px] bg-surface-dim border border-outline-variant flex flex-col items-center justify-center relative overflow-hidden">
+<div class="absolute inset-0 scanline opacity-10 pointer-events-none"></div>
+<div class="font-headline text-[64px] font-bold tracking-tight text-primary tabular-nums leading-none">05:00</div>
+<div class="font-label-caps text-[11px] uppercase tracking-[0.2em] text-on-surface-variant mt-2">MINUTES</div>
+</section>
+<!-- DURATION PICKER -->
+<section class="grid grid-cols-4 gap-px bg-outline-variant border border-outline-variant">
+<button class="h-12 bg-surface-container font-label-caps text-[12px] text-on-surface hover:bg-surface-bright transition-all">1 MIN</button>
+<button class="h-12 bg-surface-container font-label-caps text-[12px] text-on-surface hover:bg-surface-bright transition-all">3 MIN</button>
+<button class="h-12 bg-primary text-on-primary font-bold font-label-caps text-[12px]">5 MIN</button>
+<button class="h-12 bg-surface-container font-label-caps text-[12px] text-on-surface hover:bg-surface-bright transition-all">10 MIN</button>
+</section>
+<!-- RULES CARD -->
+<section class="bg-surface-container h-20 p-3 border border-outline-variant flex flex-col justify-between">
+<div class="font-label-caps text-[10px] text-on-surface-variant uppercase tracking-widest">RULES</div>
+<div class="font-headline text-[12px] text-on-surface flex items-center gap-2">
+<span class="w-1 h-1 bg-primary"></span> DRAW-3 
+                    <span class="w-1 h-1 bg-primary ml-2"></span> NO HINT PENALTY 
+                    <span class="w-1 h-1 bg-primary ml-2"></span> +50 XP / WIN
+                </div>
+</section>
+<!-- BEST RUN CARD -->
+<section class="bg-surface-container h-16 p-3 border border-outline-variant flex items-center justify-between">
+<div class="flex flex-col">
+<div class="font-label-caps text-[10px] text-on-surface-variant uppercase tracking-widest">PERSONAL BEST · 5 MIN</div>
+<div class="font-headline text-[24px] font-bold text-on-surface leading-tight">02:47 <span class="text-[12px] font-normal text-on-surface-variant">WIN</span></div>
+</div>
+<div class="flex flex-col items-end">
+<div class="font-label-caps text-[10px] text-on-surface-variant">GLOBAL RANK 142</div>
+<div class="bg-warning text-on-surface text-[9px] px-1.5 py-0.5 font-bold mt-1">TOP 5%</div>
+</div>
+</section>
+<!-- PRIMARY CTA -->
+<section class="mt-auto pt-4">
+<button class="w-full h-20 bg-primary text-on-primary flex flex-col items-center justify-center transition-all active:scale-[0.98] duration-80">
+<div class="font-headline text-[18px] font-extrabold uppercase tracking-[0.2em] flex items-center gap-2">
+<span class="material-symbols-outlined" style="font-variation-settings: 'FILL' 1;">play_arrow</span> BEGIN COUNTDOWN
+                    </div>
+</button>
+<p class="font-body-md text-[11px] text-on-surface-variant text-center mt-3">Game starts after a 3-second countdown.</p>
+</section>
+</main>
+<!-- FOOTER -->
+<footer class="h-6 bg-surface-container-lowest flex items-center justify-between px-4 border-t border-outline-variant">
+<span class="font-headline text-[10px] text-on-surface-variant">▌ NORMAL │ time-attack</span>
+<span class="font-label-caps text-[9px] text-on-surface-variant uppercase">[ENTER] begin · [ESC] back</span>
+</footer>
+<!-- BOTTOM NAV BAR (from JSON) -->
+<nav class="fixed bottom-0 w-[390px] z-50 flex justify-around items-center h-action-bar-height px-margin-edge bg-surface-container border-t border-outline-variant">
+<div class="flex flex-col items-center justify-center text-primary bg-surface-container-highest rounded-none p-2 transition-transform duration-80 active:scale-95">
+<span class="material-symbols-outlined text-primary" style="font-variation-settings: 'FILL' 1;">videogame_asset</span>
+<span class="font-label-caps text-label-caps uppercase tracking-widest">F1_NEW_GAME</span>
+</div>
+<div class="flex flex-col items-center justify-center text-on-surface-variant p-2 hover:bg-surface-bright transition-all duration-120">
+<span class="material-symbols-outlined">event_upcoming</span>
+<span class="font-label-caps text-label-caps uppercase tracking-widest">F2_CHALLENGE</span>
+</div>
+<div class="flex flex-col items-center justify-center text-on-surface-variant p-2 hover:bg-surface-bright transition-all duration-120">
+<span class="material-symbols-outlined">query_stats</span>
+<span class="font-label-caps text-label-caps uppercase tracking-widest">F5_STATS</span>
+</div>
+<div class="flex flex-col items-center justify-center text-on-surface-variant p-2 hover:bg-surface-bright transition-all duration-120">
+<span class="material-symbols-outlined">power_settings_new</span>
+<span class="font-label-caps text-label-caps uppercase tracking-widest">ESC_EXIT</span>
+</div>
+</nav>
+<!-- PADDING FOR FIXED NAV -->
+<div class="h-action-bar-height"></div>
+</div>
+</body></html>

docs/ui-mockups/weekly-goals-mobile.html

@@ -0,0 +1,265 @@
+<!DOCTYPE html>
+
+<html class="dark" lang="en"><head>
+<meta charset="utf-8"/>
+<meta content="width=device-width, initial-scale=1.0" name="viewport"/>
+<title>Weekly Goals - Rusty Solitaire</title>
+<script src="https://cdn.tailwindcss.com?plugins=forms,container-queries"></script>
+<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&amp;family=Inter:wght@400;500&amp;family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<script id="tailwind-config">
+        tailwind.config = {
+            darkMode: "class",
+            theme: {
+                extend: {
+                    "colors": {
+                        "surface-container-high": "#272a2d",
+                        "on-primary": "#003549",
+                        "highlight-valid": "#acc267",
+                        "primary-container": "#6fc2ef",
+                        "on-error-container": "#ffdad6",
+                        "surface-tint": "#7ed0fe",
+                        "outline": "#505050",
+                        "on-primary-container": "#004f6c",
+                        "on-background": "#e0e3e6",
+                        "on-secondary-fixed-variant": "#3c4d00",
+                        "error": "#fb9fb1",
+                        "suit-black": "#d0d0d0",
+                        "secondary": "#bad073",
+                        "on-secondary-fixed": "#161e00",
+                        "surface-container": "#202020",
+                        "primary": "#a1dcff",
+                        "error-container": "#93000a",
+                        "secondary-fixed": "#d5ec8c",
+                        "surface-container-highest": "#313538",
+                        "surface-dim": "#101417",
+                        "suit-red": "#fb9fb1",
+                        "warning": "#ddb26f",
+                        "secondary-fixed-dim": "#bad073",
+                        "highlight-celebration": "#e1a3ee",
+                        "on-tertiary-container": "#683476",
+                        "on-surface": "#e0e3e6",
+                        "on-surface-variant": "#bfc8cf",
+                        "inverse-on-surface": "#2d3134",
+                        "primary-fixed-dim": "#7ed0fe",
+                        "tertiary-fixed": "#fbd7ff",
+                        "info": "#12cfc0",
+                        "tertiary-fixed-dim": "#f0b0fc",
+                        "surface-variant": "#313538",
+                        "inverse-primary": "#00668a",
+                        "suit-red-cb": "#6fc2ef",
+                        "tertiary-container": "#e1a3ee",
+                        "secondary-container": "#435401",
+                        "primary-fixed": "#c4e7ff",
+                        "surface-container-low": "#181c1f",
+                        "background": "#101417",
+                        "inverse-surface": "#e0e3e6",
+                        "surface-bright": "#363a3d",
+                        "on-primary-fixed": "#001e2c",
+                        "surface-container-lowest": "#0b0f11",
+                        "on-secondary": "#293500",
+                        "on-secondary-container": "#b2c86d",
+                        "on-tertiary": "#4c195b",
+                        "tertiary": "#f7c3ff",
+                        "outline-variant": "#3f484e",
+                        "on-tertiary-fixed-variant": "#653173",
+                        "on-tertiary-fixed": "#340043",
+                        "on-primary-fixed-variant": "#004c69",
+                        "surface": "#151515",
+                        "on-error": "#690005"
+                    },
+                    "borderRadius": {
+                        "DEFAULT": "0.125rem",
+                        "lg": "0.25rem",
+                        "xl": "0.5rem",
+                        "full": "0.75rem"
+                    },
+                    "spacing": {
+                        "margin-edge": "1rem",
+                        "touch-target-min": "48dp",
+                        "gutter-card": "0.375rem",
+                        "stack-overlap": "2rem",
+                        "action-bar-height": "64px"
+                    },
+                    "fontFamily": {
+                        "headline": ["JetBrains Mono"],
+                        "body-md": ["Inter"],
+                        "label-caps": ["JetBrains Mono"],
+                        "card-rank": ["JetBrains Mono"],
+                        "hud-timer": ["JetBrains Mono"],
+                        "hud-score": ["JetBrains Mono"]
+                    },
+                    "fontSize": {
+                        "headline": ["28px", {"lineHeight": "32px", "letterSpacing": "-0.01em", "fontWeight": "700"}],
+                        "body-md": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+                        "label-caps": ["12px", {"lineHeight": "16px", "letterSpacing": "0.08em", "fontWeight": "500"}],
+                        "card-rank": ["18px", {"lineHeight": "18px", "fontWeight": "700"}],
+                        "hud-timer": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+                        "hud-score": ["24px", {"lineHeight": "32px", "letterSpacing": "-0.02em", "fontWeight": "700"}]
+                    }
+                }
+            }
+        }
+    </script>
+<style>
+        .material-symbols-outlined {
+            font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
+            vertical-align: middle;
+        }
+        .tabular-nums { font-variant-numeric: tabular-nums; }
+        ::-webkit-scrollbar { width: 4px; }
+        ::-webkit-scrollbar-track { background: #151515; }
+        ::-webkit-scrollbar-thumb { background: #353535; border-radius: 2px; }
+        
+        /* Scanline Overlay Effect */
+        .crt-overlay {
+            pointer-events: none;
+            position: fixed;
+            top: 0; left: 0; bottom: 0; right: 0;
+            background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.1) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.03), rgba(0, 255, 0, 0.01), rgba(0, 0, 255, 0.03));
+            background-size: 100% 3px, 3px 100%;
+            z-index: 100;
+        }
+    </style>
+<style>
+    body {
+      min-height: max(884px, 100dvh);
+    }
+  </style>
+  </head>
+<body class="bg-background text-on-surface font-body-md selection:bg-primary-container selection:text-on-primary-container overflow-hidden h-screen flex flex-col">
+<!-- Top Status Bar -->
+<div class="h-[32px] bg-surface flex items-center justify-between px-margin-edge z-50 shrink-0">
+<div class="font-label-caps text-[12px] text-[#a0a0a0] flex items-center">
+<span class="mr-1">▌</span>weekly-goals.json
+        </div>
+<div class="bg-warning/10 text-warning px-2 py-0.5 rounded-sm flex items-center gap-1.5">
+<span class="material-symbols-outlined text-[14px]">timer</span>
+<span class="font-headline text-[10px] font-bold tabular-nums tracking-wider uppercase">RESETS IN 2D 14H</span>
+</div>
+</div>
+<!-- Main Header Band -->
+<header class="h-[80px] px-margin-edge flex flex-col justify-center border-b border-outline/20 shrink-0">
+<h1 class="font-headline text-[24px] font-bold text-suit-black tracking-tight leading-none">WEEKLY GOALS</h1>
+<p class="font-body-md text-[12px] text-[#a0a0a0] mt-1">Complete goals before reset to claim XP and rewards.</p>
+</header>
+<!-- Main Content Canvas -->
+<main class="flex-1 overflow-y-auto px-margin-edge py-4 space-y-4">
+<!-- Overall Progress Card -->
+<section class="h-[80px] bg-surface-container border border-outline/30 rounded-[4px] p-4 flex flex-col justify-between">
+<div class="flex justify-between items-center">
+<span class="font-label-caps text-[10px] text-[#a0a0a0] tracking-widest uppercase">OVERALL · 3/5</span>
+<span class="font-headline text-[12px] text-highlight-celebration tabular-nums">(60%)</span>
+</div>
+<div class="w-full h-[6px] bg-[#353535] rounded-full overflow-hidden">
+<div class="h-full bg-highlight-celebration w-[60%]"></div>
+</div>
+<div class="flex justify-end">
+<div class="font-label-caps text-[11px] text-highlight-valid flex items-center gap-1">
+<span class="material-symbols-outlined text-[14px]">stars</span>
+                    +220 XP CLAIMED
+                </div>
+</div>
+</section>
+<!-- Goal List -->
+<div class="space-y-2 pb-16">
+<!-- Goal 1: COMPLETED -->
+<div class="h-[88px] bg-surface-container border border-outline/30 rounded-[4px] p-3 flex flex-col justify-between">
+<div class="flex justify-between items-start">
+<h3 class="font-headline text-[14px] font-bold text-suit-black">PLAY 10 GAMES</h3>
+<div class="bg-highlight-valid/10 text-highlight-valid px-2 py-0.5 rounded-sm font-label-caps text-[11px]">+50 XP</div>
+</div>
+<div class="w-full h-[4px] bg-[#353535] rounded-full">
+<div class="h-full bg-highlight-valid w-full"></div>
+</div>
+<div class="flex justify-between items-center font-label-caps text-[10px]">
+<span class="text-[#a0a0a0]">10/10 GAMES</span>
+<span class="text-highlight-valid flex items-center gap-1">✓ CLAIMED</span>
+</div>
+</div>
+<!-- Goal 2: COMPLETED -->
+<div class="h-[88px] bg-surface-container border border-outline/30 rounded-[4px] p-3 flex flex-col justify-between">
+<div class="flex justify-between items-start">
+<h3 class="font-headline text-[14px] font-bold text-suit-black">WIN 5 DAILY SEEDS</h3>
+<div class="bg-highlight-celebration/10 text-highlight-celebration px-2 py-0.5 rounded-sm font-label-caps text-[11px]">+100 XP</div>
+</div>
+<div class="w-full h-[4px] bg-[#353535] rounded-full">
+<div class="h-full bg-highlight-valid w-full"></div>
+</div>
+<div class="flex justify-between items-center font-label-caps text-[10px]">
+<span class="text-[#a0a0a0]">5/5 DONE</span>
+<span class="text-highlight-valid flex items-center gap-1">✓ CLAIMED</span>
+</div>
+</div>
+<!-- Goal 3: IN PROGRESS -->
+<div class="h-[88px] bg-surface-container border border-outline/30 rounded-[4px] p-3 flex flex-col justify-between border-l-2 border-l-primary-container">
+<div class="flex justify-between items-start">
+<h3 class="font-headline text-[14px] font-bold text-suit-black">WIN UNDER 4:00 (3 TIMES)</h3>
+<div class="bg-highlight-valid/10 text-highlight-valid px-2 py-0.5 rounded-sm font-label-caps text-[11px]">+75 XP</div>
+</div>
+<div class="w-full h-[4px] bg-[#353535] rounded-full">
+<div class="h-full bg-primary-container w-[66%]"></div>
+</div>
+<div class="flex justify-between items-center font-label-caps text-[10px]">
+<span class="text-[#a0a0a0]">2/3</span>
+<span class="text-primary-container flex items-center gap-1">▶ IN PROGRESS</span>
+</div>
+</div>
+<!-- Goal 4: NOT STARTED -->
+<div class="h-[88px] bg-surface-container border border-outline/30 rounded-[4px] p-3 flex flex-col justify-between opacity-70">
+<div class="flex justify-between items-start">
+<h3 class="font-headline text-[14px] font-bold text-suit-black">PERFECT GAME (NO UNDO)</h3>
+<div class="bg-warning/10 text-warning px-2 py-0.5 rounded-sm font-label-caps text-[11px]">+150 XP</div>
+</div>
+<div class="w-full h-[4px] bg-[#353535] rounded-full">
+<div class="h-full bg-outline w-0"></div>
+</div>
+<div class="flex justify-between items-center font-label-caps text-[10px]">
+<span class="text-[#a0a0a0]">0/1</span>
+<span class="text-outline flex items-center gap-1">○ NOT STARTED</span>
+</div>
+</div>
+<!-- Goal 5: IN PROGRESS -->
+<div class="h-[88px] bg-surface-container border border-outline/30 rounded-[4px] p-3 flex flex-col justify-between border-l-2 border-l-primary-container">
+<div class="flex justify-between items-start">
+<h3 class="font-headline text-[14px] font-bold text-suit-black">STREAK OF 5 WINS</h3>
+<div class="bg-highlight-valid/10 text-highlight-valid px-2 py-0.5 rounded-sm font-label-caps text-[11px]">+50 XP</div>
+</div>
+<div class="w-full h-[4px] bg-[#353535] rounded-full">
+<div class="h-full bg-primary-container w-[60%]"></div>
+</div>
+<div class="flex justify-between items-center font-label-caps text-[10px]">
+<span class="text-[#a0a0a0]">3/5</span>
+<span class="text-primary-container flex items-center gap-1">▶ IN PROGRESS</span>
+</div>
+</div>
+</div>
+</main>
+<!-- Navigation Shell from JSON -->
+<nav class="fixed bottom-0 left-0 w-full z-50 flex justify-around items-center px-margin-edge bg-surface-container border-t border-outline-variant h-action-bar-height">
+<button class="flex flex-col items-center justify-center text-on-surface-variant hover:text-primary transition-colors duration-120 active:scale-95 transition-transform duration-80">
+<span class="material-symbols-outlined">refresh</span>
+</button>
+<button class="flex flex-col items-center justify-center text-on-surface-variant hover:text-primary transition-colors duration-120 active:scale-95 transition-transform duration-80">
+<span class="material-symbols-outlined">undo</span>
+</button>
+<button class="flex flex-col items-center justify-center text-primary active:scale-95 transition-transform duration-80">
+<span class="material-symbols-outlined" style="font-variation-settings: 'FILL' 1;">style</span>
+</button>
+<button class="flex flex-col items-center justify-center text-on-surface-variant hover:text-primary transition-colors duration-120 active:scale-95 transition-transform duration-80">
+<span class="material-symbols-outlined">help_outline</span>
+</button>
+</nav>
+<!-- Bottom Terminal Status Footer -->
+<footer class="fixed bottom-[64px] left-0 w-full h-[24px] bg-surface flex items-center justify-between px-margin-edge z-50 border-t border-outline/10">
+<div class="font-label-caps text-[10px] text-[#a0a0a0]">
+<span class="text-primary">▌</span> NORMAL │ weekly
+        </div>
+<div class="font-label-caps text-[10px] flex gap-3">
+<span class="text-[#505050]"><span class="text-[#a0a0a0]">[C]</span> claim all</span>
+<span class="text-[#505050]"><span class="text-[#a0a0a0]">[ESC]</span> back</span>
+</div>
+</footer>
+<!-- CRT Overlay -->
+<div class="crt-overlay"></div>
+</body></html>

docs/ui-mockups/win-summary-mobile.html

@@ -0,0 +1,200 @@
+<!DOCTYPE html>
+
+<html class="dark" lang="en"><head>
+<meta charset="utf-8"/>
+<meta content="width=device-width, initial-scale=1.0" name="viewport"/>
+<title>ROOT@SOLITAIRE:~ | Win Summary</title>
+<script src="https://cdn.tailwindcss.com?plugins=forms,container-queries"></script>
+<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&amp;family=Inter:wght@400;500;700&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&amp;display=swap" rel="stylesheet"/>
+<script id="tailwind-config">
+        tailwind.config = {
+            darkMode: "class",
+            theme: {
+                extend: {
+                    "colors": {
+                        "primary-fixed": "#c4e7ff",
+                        "inverse-surface": "#e0e3e6",
+                        "on-tertiary": "#4c195b",
+                        "suit-red-cb": "#6fc2ef",
+                        "secondary-fixed-dim": "#bad073",
+                        "on-secondary-fixed-variant": "#3c4d00",
+                        "on-secondary-fixed": "#161e00",
+                        "surface-container-highest": "#313538",
+                        "primary-fixed-dim": "#7ed0fe",
+                        "on-secondary": "#293500",
+                        "on-background": "#e0e3e6",
+                        "highlight-celebration": "#e1a3ee",
+                        "warning": "#ddb26f",
+                        "on-tertiary-fixed-variant": "#653173",
+                        "background": "#101417",
+                        "surface-container-lowest": "#0b0f11",
+                        "info": "#12cfc0",
+                        "tertiary-container": "#e1a3ee",
+                        "surface-container": "#202020",
+                        "secondary": "#bad073",
+                        "outline": "#505050",
+                        "tertiary-fixed-dim": "#f0b0fc",
+                        "secondary-container": "#435401",
+                        "inverse-primary": "#00668a",
+                        "surface": "#151515",
+                        "on-error-container": "#ffdad6",
+                        "error-container": "#93000a",
+                        "surface-bright": "#363a3d",
+                        "surface-dim": "#101417",
+                        "on-primary-fixed-variant": "#004c69",
+                        "on-tertiary-fixed": "#340043",
+                        "inverse-on-surface": "#2d3134",
+                        "surface-container-high": "#272a2d",
+                        "secondary-fixed": "#d5ec8c",
+                        "on-tertiary-container": "#683476",
+                        "on-secondary-container": "#b2c86d",
+                        "surface-tint": "#7ed0fe",
+                        "on-primary-container": "#004f6c",
+                        "on-error": "#690005",
+                        "on-surface": "#e0e3e6",
+                        "surface-variant": "#313538",
+                        "highlight-valid": "#acc267",
+                        "primary": "#a1dcff"
+                    },
+                    "borderRadius": {
+                        "DEFAULT": "0.125rem",
+                        "lg": "0.25rem",
+                        "xl": "0.5rem",
+                        "full": "0.75rem"
+                    },
+                    "spacing": {
+                        "margin-edge": "1rem",
+                        "action-bar-height": "64px",
+                        "gutter-card": "0.375rem",
+                        "touch-target-min": "48dp",
+                        "stack-overlap": "2rem"
+                    },
+                    "fontFamily": {
+                        "body-md": ["Inter"],
+                        "label-caps": ["JetBrains Mono"],
+                        "card-rank": ["JetBrains Mono"],
+                        "hud-timer": ["JetBrains Mono"],
+                        "headline": ["JetBrains Mono"],
+                        "hud-score": ["JetBrains Mono"]
+                    },
+                    "fontSize": {
+                        "body-md": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+                        "label-caps": ["12px", {"lineHeight": "16px", "letterSpacing": "0.08em", "fontWeight": "500"}],
+                        "card-rank": ["18px", {"lineHeight": "18px", "fontWeight": "700"}],
+                        "hud-timer": ["16px", {"lineHeight": "24px", "fontWeight": "400"}],
+                        "headline": ["28px", {"lineHeight": "32px", "letterSpacing": "-0.01em", "fontWeight": "700"}],
+                        "hud-score": ["24px", {"lineHeight": "32px", "letterSpacing": "-0.02em", "fontWeight": "700"}]
+                    }
+                },
+            },
+        }
+    </script>
+<style>
+        .crt-scanlines {
+            background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.1) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.02), rgba(0, 255, 0, 0.01), rgba(0, 0, 255, 0.02));
+            background-size: 100% 2px, 3px 100%;
+            pointer-events: none;
+        }
+        .lavender-glow {
+            text-shadow: 0 0 16px rgba(225, 163, 238, 0.3);
+        }
+        .material-symbols-outlined {
+            font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
+        }
+    </style>
+<style>
+    body {
+      min-height: max(884px, 100dvh);
+    }
+  </style>
+  </head>
+<body class="bg-background text-on-background font-body-md selection:bg-primary-container selection:text-on-primary-container min-h-screen flex flex-col relative overflow-hidden">
+<!-- CRT Overlay -->
+<div class="fixed inset-0 crt-scanlines z-[100] opacity-30"></div>
+<!-- Status Bar (Emulating TopAppBar context) -->
+<header class="h-[32px] bg-surface-container flex items-center justify-between px-margin-edge z-50 border-b border-outline-variant">
+<div class="flex items-center gap-2">
+<span class="font-label-caps text-[11px] text-on-surface">▌win.tsx</span>
+</div>
+<div class="flex items-center gap-4">
+<div class="flex items-center gap-1">
+<span class="w-2 h-2 rounded-full bg-info"></span>
+<span class="font-label-caps text-[11px] text-info uppercase">Synced</span>
+</div>
+<span class="font-label-caps text-[11px] text-outline uppercase tracking-tight">v0.20.0</span>
+</div>
+</header>
+<!-- Content Canvas -->
+<main class="flex-1 flex flex-col px-margin-edge pt-12 pb-8 gap-8 relative z-10">
+<!-- Hero Band -->
+<section class="flex flex-col items-center text-center space-y-2">
+<h1 class="font-headline text-[48px] leading-tight text-highlight-celebration uppercase lavender-glow tracking-tighter">
+                █ COMPLETE
+            </h1>
+<p class="font-label-caps text-[12px] text-outline-variant tracking-[0.2em]">
+                GAME #2024-127 · DRAW-3
+            </p>
+</section>
+<!-- Stats Card -->
+<section class="bg-surface-container border border-outline-variant rounded-lg overflow-hidden p-6 grid grid-cols-2 gap-y-8 gap-x-4">
+<div class="space-y-1">
+<span class="block font-label-caps text-outline uppercase text-[10px]">Final Score</span>
+<span class="block font-hud-score text-on-background">1,024</span>
+</div>
+<div class="space-y-1">
+<span class="block font-label-caps text-outline uppercase text-[10px]">Time</span>
+<span class="block font-hud-timer text-on-background">12:34</span>
+</div>
+<div class="space-y-1">
+<span class="block font-label-caps text-outline uppercase text-[10px]">Moves</span>
+<span class="block font-hud-timer text-on-background">87</span>
+</div>
+<div class="space-y-1">
+<span class="block font-label-caps text-outline uppercase text-[10px]">Par Delta</span>
+<span class="block font-hud-timer text-highlight-valid">−13</span>
+</div>
+</section>
+<!-- Achievement Card -->
+<section class="bg-surface-container border-l-2 border-highlight-celebration rounded-r-lg p-4 flex items-center justify-between">
+<div class="space-y-1">
+<span class="font-label-caps text-highlight-celebration text-[10px] flex items-center gap-1">
+<span class="text-[8px]">▲</span> ACHIEVEMENT UNLOCKED
+                </span>
+<p class="font-label-caps text-suit-black uppercase tracking-wider text-[14px]">FIRST DAILY WIN</p>
+</div>
+<div class="w-12 h-12 rounded-full border border-outline-variant flex items-center justify-center bg-surface-container-low">
+<span class="material-symbols-outlined text-highlight-celebration text-2xl" data-icon="military_tech">military_tech</span>
+</div>
+</section>
+<!-- Action Buttons -->
+<div class="mt-auto space-y-3">
+<button class="w-full h-[56px] bg-info text-surface font-label-caps text-[14px] font-bold tracking-widest flex items-center justify-center gap-2 hover:opacity-90 active:opacity-80 transition-all uppercase">
+<span class="text-lg">▶</span> New Game
+            </button>
+<div class="grid grid-cols-2 gap-3">
+<button class="h-[48px] border border-outline text-on-surface-variant font-label-caps text-[12px] flex items-center justify-center gap-2 hover:border-info hover:text-info transition-colors uppercase">
+<span class="text-sm">↺</span> Replay Seed
+                </button>
+<button class="h-[48px] border border-outline text-on-surface-variant font-label-caps text-[12px] flex items-center justify-center gap-2 hover:border-info hover:text-info transition-colors uppercase">
+<span class="text-sm">⌂</span> Home
+                </button>
+</div>
+</div>
+</main>
+<!-- Footer Keys -->
+<footer class="h-action-bar-height flex flex-col items-center justify-center px-margin-edge border-t border-outline-variant bg-surface-container-low">
+<div class="flex gap-4">
+<div class="flex items-center gap-1.5">
+<span class="font-label-caps text-outline-variant">[ S ]</span>
+<span class="font-label-caps text-outline uppercase text-[10px]">share screenshot</span>
+</div>
+<div class="flex items-center gap-1.5">
+<span class="font-label-caps text-outline-variant">[ X ]</span>
+<span class="font-label-caps text-outline uppercase text-[10px]">copy seed</span>
+</div>
+</div>
+</footer>
+<!-- Bottom Nav Suppression Logic: This is a task-focused confirmation screen, so the global BottomNavBar from JSON is suppressed to focus on primary actions. -->
+</body></html>

solitaire_app/Cargo.toml

@@ -8,8 +8,68 @@ edition.workspace = true
 name = "solitaire_app"
 path = "src/main.rs"
 
+# `cdylib` is what cargo-apk packages into `libsolitaire_app.so` for
+# Android — the activity dlopens the shared object and calls into it.
+# `rlib` lets the bin target above link the library normally on
+# desktop. Both produce the same code; only the linkage form differs.
+[lib]
+name = "solitaire_app"
+path = "src/lib.rs"
+crate-type = ["cdylib", "rlib"]
+
 [dependencies]
 bevy             = { workspace = true }
 solitaire_engine = { workspace = true }
 solitaire_data   = { workspace = true }
+
+# `keyring`'s default-store init only matters on platforms with a
+# real keychain backend (Linux Secret Service, macOS Keychain,
+# Windows Credential Store). The crate also pulls `rpassword`
+# transitively, which uses `libc::__errno_location` — a symbol
+# Android's bionic doesn't expose. Target-gating keeps
+# `cargo apk build` viable; the call site in `lib.rs` has its own
+# `cfg(not(target_os = "android"))` guard so the desktop init path
+# is unchanged.
+[target.'cfg(not(target_os = "android"))'.dependencies]
 keyring          = { workspace = true }
+
+# --- Android packaging metadata (read by `cargo-apk`) -------------------
+#
+# Pinning these values inside the repo means a contributor running
+# `cargo apk build -p solitaire_app --target x86_64-linux-android`
+# does not need to install whatever SDK version cargo-apk happens to
+# default to today. The numbers track the SDK we install in the dev
+# setup script: target SDK 34 (Android 14, current Play Store target),
+# min SDK 26 (Android 8, the lowest Bevy 0.18 supports cleanly with
+# the wgpu / GLES path).
+#
+# Asset path is `../assets` so the same directory the desktop build
+# already uses ships into the APK without copy-tree gymnastics.
+# `apk_name` keeps the output filename predictable across machines.
+[package.metadata.android]
+package = "com.solitairequest.app"
+apk_name = "solitaire-quest"
+build_targets = ["aarch64-linux-android", "armv7-linux-androideabi", "x86_64-linux-android"]
+assets = "../assets"
+# No `runtime_libs` — we don't ship any precompiled .so files,
+# the entire app is pure Rust + Bevy. cargo-apk would try to
+# resolve `runtime_libs/<arch>/` if set, and fail on a non-existent
+# arch directory under our package.
+strip = "strip"
+
+[package.metadata.android.sdk]
+target_sdk_version = 34
+min_sdk_version = 26
+
+[[package.metadata.android.uses_feature]]
+name = "android.hardware.touchscreen"
+required = true
+
+[[package.metadata.android.uses_permission]]
+name = "android.permission.INTERNET"
+
+[package.metadata.android.application]
+label = "Solitaire Quest"
+# `debuggable` defaults to false on release builds; cargo-apk flips it
+# automatically for debug profiles. Leaving the field unset keeps the
+# default behaviour.

solitaire_app/src/lib.rs

@@ -0,0 +1,281 @@
+//! Library entry point for `solitaire_app`.
+//!
+//! The app is a `cdylib + bin` hybrid: desktop builds run through the
+//! `bin` target's [`main`](crate::main_desktop) shim; Android builds
+//! load this `cdylib` via NativeActivity / GameActivity, which calls
+//! into the platform's own `main` glue. Both paths converge on
+//! [`run`], so the ECS bootstrap is single-sourced.
+//!
+//! Why split this out: cargo-apk requires the package to expose a
+//! `cdylib` library target — the Android activity dlopens
+//! `libsolitaire_app.so` and calls into it. A bin-only crate panics
+//! at build time with `Bin is not compatible with Cdylib`. The split
+//! keeps the desktop `cargo run -p solitaire_app` flow unchanged
+//! while making `cargo apk build -p solitaire_app` viable.
+
+use std::fs::OpenOptions;
+use std::io::Write;
+use std::time::{SystemTime, UNIX_EPOCH};
+
+use bevy::prelude::*;
+use bevy::window::{
+    Monitor, MonitorSelection, PresentMode, PrimaryMonitor, PrimaryWindow, WindowPosition,
+};
+use solitaire_data::{load_settings_from, provider_for_backend, settings_file_path, Settings};
+use solitaire_engine::{
+    register_theme_asset_sources, AchievementPlugin, AnimationPlugin, AssetSourcesPlugin,
+    AudioPlugin, AutoCompletePlugin, CardAnimationPlugin, CardPlugin, ChallengePlugin,
+    CursorPlugin, DailyChallengePlugin, DiagnosticsHudPlugin, FeedbackAnimPlugin, FontPlugin,
+    GamePlugin, HelpPlugin, HomePlugin, HudPlugin, InputPlugin, LeaderboardPlugin,
+    OnboardingPlugin, PausePlugin, ProfilePlugin, ProgressPlugin, RadialMenuPlugin,
+    ReplayOverlayPlugin, ReplayPlaybackPlugin, SelectionPlugin, SettingsPlugin, SplashPlugin,
+    StatsPlugin, SyncPlugin, TablePlugin, ThemePlugin, ThemeRegistryPlugin, TimeAttackPlugin,
+    UiFocusPlugin, UiModalPlugin, UiTooltipPlugin, WeeklyGoalsPlugin, WinSummaryPlugin,
+};
+
+/// App entry point — builds and runs the Bevy app.
+///
+/// Called from both the desktop `bin` target's `main` shim and (on
+/// Android) the platform's NativeActivity / GameActivity glue.
+pub fn run() {
+    // Install a panic hook that writes a crash log next to the save files
+    // before re-running the default hook (so stderr still gets the message
+    // and any debugger attached still sees the panic).
+    install_crash_log_hook();
+
+    // Initialise the platform keyring store before any token operations.
+    // On Linux this uses the Secret Service (GNOME Keyring / KWallet); on
+    // macOS it uses the Keychain; on Windows it uses the Credential store.
+    // If the platform has no OS keyring (e.g. a headless CI box), keyring
+    // operations will fail gracefully with TokenError::KeychainUnavailable.
+    //
+    // Android: `keyring` isn't compiled in (its `rpassword` transitive
+    // pulls a libc symbol Android's bionic doesn't expose). `auth_tokens`
+    // ships an Android stub that returns KeychainUnavailable for every
+    // call — the runtime behaviour is "session login required each launch"
+    // until we wire Android Keystore via JNI in the Phase-Android round.
+    #[cfg(not(target_os = "android"))]
+    if let Err(e) = keyring::use_native_store(true) {
+        eprintln!(
+            "warn: could not initialise OS keyring ({e}); \
+             server sync login will be unavailable"
+        );
+    }
+
+    // Load settings before building the app so we can construct the right
+    // sync provider. Falls back to defaults if no settings file exists yet.
+    let settings: Settings = settings_file_path()
+        .map(|p| load_settings_from(&p))
+        .unwrap_or_default();
+    let sync_provider = provider_for_backend(&settings.sync_backend);
+
+    // Restore the previous window geometry if the player has one saved.
+    // Otherwise open at the platform default (1280×800, centred on the
+    // primary monitor) — `apply_smart_default_window_size` will resize
+    // up to a monitor-relative target on the first frame so HiDPI / 4K
+    // sessions don't end up with a comparatively tiny window.
+    let had_saved_geometry = settings.window_geometry.is_some();
+    let (window_resolution, window_position) = match settings.window_geometry {
+        Some(geom) => (
+            (geom.width, geom.height).into(),
+            WindowPosition::At(IVec2::new(geom.x, geom.y)),
+        ),
+        None => (
+            (1280u32, 800u32).into(),
+            WindowPosition::Centered(MonitorSelection::Primary),
+        ),
+    };
+
+    let mut app = App::new();
+
+    // The card-theme system's `themes://` asset source must be
+    // registered *before* `DefaultPlugins` builds `AssetPlugin`,
+    // because that plugin freezes the asset-source list at build
+    // time. The matching `AssetSourcesPlugin` (added below) finishes
+    // the wiring after `DefaultPlugins` by populating the embedded
+    // default theme into Bevy's `EmbeddedAssetRegistry`.
+    register_theme_asset_sources(&mut app);
+
+    app
+        .add_plugins(
+            DefaultPlugins
+                .set(WindowPlugin {
+                    primary_window: Some(Window {
+                        title: "Solitaire Quest".into(),
+                        // X11/Wayland WM_CLASS so taskbar managers group
+                        // multiple windows of this app correctly.
+                        name: Some("solitaire-quest".into()),
+                        resolution: window_resolution,
+                        position: window_position,
+                        // AutoNoVsync prefers Mailbox (triple-buffered) and
+                        // falls back to Immediate, eliminating the vsync stall
+                        // that AutoVsync produces during continuous window
+                        // resize on X11 / Wayland. The game's frame budget is
+                        // small enough that a few stray dropped frames from
+                        // disabling vsync are imperceptible.
+                        present_mode: PresentMode::AutoNoVsync,
+                        resize_constraints: bevy::window::WindowResizeConstraints {
+                            min_width: 800.0,
+                            min_height: 600.0,
+                            ..default()
+                        },
+                        ..default()
+                    }),
+                    ..default()
+                })
+                // The `assets/` directory lives at the workspace root, but
+                // Bevy resolves `AssetPlugin::file_path` relative to the
+                // binary package's `CARGO_MANIFEST_DIR` (`solitaire_app/`).
+                // Point one level up so `cargo run -p solitaire_app` finds
+                // card faces, backs, backgrounds, and the UI font.
+                .set(bevy::asset::AssetPlugin {
+                    file_path: "../assets".to_string(),
+                    ..default()
+                }),
+        )
+        .add_plugins(AssetSourcesPlugin)
+        .add_plugins(ThemePlugin)
+        .add_plugins(ThemeRegistryPlugin)
+        .add_plugins(FontPlugin)
+        .add_plugins(GamePlugin)
+        .add_plugins(TablePlugin)
+        .add_plugins(CardPlugin)
+        .add_plugins(CursorPlugin)
+        .add_plugins(InputPlugin)
+        .add_plugins(RadialMenuPlugin)
+        .add_plugins(SelectionPlugin)
+        .add_plugins(AnimationPlugin)
+        .add_plugins(FeedbackAnimPlugin)
+        .add_plugins(CardAnimationPlugin)
+        .add_plugins(AutoCompletePlugin)
+        .add_plugins(ReplayPlaybackPlugin)
+        .add_plugins(ReplayOverlayPlugin)
+        .add_plugins(StatsPlugin::default())
+        .add_plugins(ProgressPlugin::default())
+        .add_plugins(AchievementPlugin::default())
+        .add_plugins(DailyChallengePlugin)
+        .add_plugins(WeeklyGoalsPlugin)
+        .add_plugins(ChallengePlugin)
+        .add_plugins(TimeAttackPlugin)
+        .add_plugins(HudPlugin)
+        .add_plugins(HelpPlugin)
+        .add_plugins(HomePlugin::default())
+        .add_plugins(ProfilePlugin)
+        .add_plugins(PausePlugin)
+        .add_plugins(SettingsPlugin::default())
+        .add_plugins(AudioPlugin)
+        .add_plugins(OnboardingPlugin)
+        .add_plugins(SyncPlugin::new(sync_provider))
+        .add_plugins(LeaderboardPlugin)
+        .add_plugins(WinSummaryPlugin)
+        .add_plugins(UiModalPlugin)
+        .add_plugins(UiFocusPlugin)
+        .add_plugins(UiTooltipPlugin)
+        .add_plugins(SplashPlugin)
+        .add_plugins(DiagnosticsHudPlugin);
+
+    // Smart default window sizing: when no saved geometry was loaded,
+    // resize the freshly-opened 1280×800 window to ~70 % of the primary
+    // monitor's logical size on the first frame. Without this, a 4K
+    // monitor opens the same 1280×800 window that a 1080p monitor
+    // does — visually tiny relative to screen. Skipped entirely when
+    // saved geometry was applied; the player's preference always wins.
+    //
+    // Players who specifically want the literal 1280×800 baseline on
+    // every fresh launch can flip `disable_smart_default_size` in
+    // Settings to opt out. The flag is checked once at startup; a
+    // mid-session change applies on the next launch.
+    if !had_saved_geometry && !settings.disable_smart_default_size {
+        app.add_systems(Update, apply_smart_default_window_size);
+    }
+
+    app.run();
+}
+
+/// One-shot Update system that runs only on launches without saved
+/// window geometry. Resizes the primary window to a fraction of the
+/// primary monitor's *logical* size — bigger monitors get bigger
+/// windows automatically. Logical size already accounts for the OS's
+/// HiDPI scale factor, so a 2880×1800 Retina display reporting
+/// scale_factor 2.0 yields a 1440×900 logical size and a 1008×630
+/// target window — same physical inches as a 1920×1080 monitor with
+/// scale_factor 1.0 yielding 1344×756.
+///
+/// Uses `Local<bool>` to make itself one-shot rather than introducing
+/// a dedicated resource. The Update tick is necessary because Bevy
+/// populates the `Monitor` entities asynchronously after winit's
+/// Resumed event fires; they may not exist on the first Startup pass.
+fn apply_smart_default_window_size(
+    mut applied: Local<bool>,
+    monitors: Query<&Monitor, With<PrimaryMonitor>>,
+    mut windows: Query<&mut Window, With<PrimaryWindow>>,
+) {
+    if *applied {
+        return;
+    }
+    let Ok(monitor) = monitors.single() else {
+        // Primary monitor not yet spawned by bevy_winit. Try again
+        // next frame; the cost is one early-exit per tick until
+        // monitors arrive (typically frame 1 or 2).
+        return;
+    };
+    let Ok(mut window) = windows.single_mut() else {
+        return;
+    };
+
+    let scale = monitor.scale_factor as f32;
+    if scale <= 0.0 {
+        // Defensive: a zero or negative scale factor would NaN the
+        // arithmetic below. Bail and accept the default size.
+        *applied = true;
+        return;
+    }
+    let logical_w = monitor.physical_width as f32 / scale;
+    let logical_h = monitor.physical_height as f32 / scale;
+
+    // Target 70 % of monitor in each dimension, clamped to the
+    // existing 800×600 minimum and the monitor's own logical size
+    // (so we never request a window larger than the screen).
+    let target_w = (logical_w * 0.7).clamp(800.0, logical_w);
+    let target_h = (logical_h * 0.7).clamp(600.0, logical_h);
+
+    // Resize only when the change is meaningful — at exactly 1280×800
+    // on a 1920×1080 monitor the new target is 1344×756 (only ~5 %
+    // wider), worth the resize; at the same default on an 800×600
+    // monitor the clamp pins us at 800×600 and we shouldn't resize.
+    let curr_w = window.resolution.width();
+    let curr_h = window.resolution.height();
+    if (curr_w - target_w).abs() > 8.0 || (curr_h - target_h).abs() > 8.0 {
+        window.resolution.set(target_w, target_h);
+    }
+    *applied = true;
+}
+
+/// Wraps the default panic hook with one that also appends a crash log
+/// to `<data_dir>/crash.log` (next to `settings.json`). The default hook
+/// still runs afterwards, so stderr output and debugger integration are
+/// unchanged. If the data directory is unavailable, the wrapper silently
+/// falls through — the default hook handles output either way.
+fn install_crash_log_hook() {
+    let crash_log_path = settings_file_path().and_then(|p| {
+        p.parent()
+            .map(|parent| parent.join("crash.log"))
+    });
+    let default_hook = std::panic::take_hook();
+    std::panic::set_hook(Box::new(move |info| {
+        if let Some(path) = crash_log_path.as_ref()
+            && let Ok(mut file) = OpenOptions::new()
+                .create(true)
+                .append(true)
+                .open(path)
+        {
+            // Plain unix-seconds timestamp keeps the format trivially
+            // parseable and avoids pulling in chrono just for this.
+            let secs = SystemTime::now()
+                .duration_since(UNIX_EPOCH)
+                .map_or(0, |d| d.as_secs());
+            let _ = writeln!(file, "----- t={secs} -----\n{info}\n");
+        }
+        default_hook(info);
+    }));
+}

solitaire_app/src/main.rs

@@ -1,249 +1,9 @@
-use std::fs::OpenOptions;
+//! Desktop entry point for `solitaire_app`.
-use std::io::Write;
+//!
-use std::time::{SystemTime, UNIX_EPOCH};
+//! The body of the app lives in `lib.rs` so cargo-apk can package the
-
+//! same code into an Android `cdylib`. This shim is the desktop /
-use bevy::prelude::*;
+//! `cargo run` path — it just delegates to [`solitaire_app::run`].
-use bevy::window::{
-    Monitor, MonitorSelection, PresentMode, PrimaryMonitor, PrimaryWindow, WindowPosition,
-};
-use solitaire_data::{load_settings_from, provider_for_backend, settings_file_path, Settings};
-use solitaire_engine::{
-    register_theme_asset_sources, AchievementPlugin, AnimationPlugin, AssetSourcesPlugin,
-    AudioPlugin, AutoCompletePlugin, CardAnimationPlugin, CardPlugin, ChallengePlugin,
-    CursorPlugin, DailyChallengePlugin, FeedbackAnimPlugin, FontPlugin, GamePlugin, HelpPlugin,
-    HomePlugin, HudPlugin, InputPlugin, LeaderboardPlugin, OnboardingPlugin, PausePlugin,
-    ProfilePlugin, ProgressPlugin, RadialMenuPlugin, ReplayOverlayPlugin, ReplayPlaybackPlugin,
-    SelectionPlugin, SettingsPlugin, SplashPlugin,
-    StatsPlugin, SyncPlugin, TablePlugin, ThemePlugin, ThemeRegistryPlugin, TimeAttackPlugin,
-    UiFocusPlugin, UiModalPlugin, UiTooltipPlugin, WeeklyGoalsPlugin, WinSummaryPlugin,
-};
 
 fn main() {
-    // Install a panic hook that writes a crash log next to the save files
+    solitaire_app::run();
-    // before re-running the default hook (so stderr still gets the message
-    // and any debugger attached still sees the panic).
-    install_crash_log_hook();
-
-    // Initialise the platform keyring store before any token operations.
-    // On Linux this uses the Secret Service (GNOME Keyring / KWallet); on
-    // macOS it uses the Keychain; on Windows it uses the Credential store.
-    // If the platform has no OS keyring (e.g. a headless CI box), keyring
-    // operations will fail gracefully with TokenError::KeychainUnavailable.
-    if let Err(e) = keyring::use_native_store(true) {
-        eprintln!(
-            "warn: could not initialise OS keyring ({e}); \
-             server sync login will be unavailable"
-        );
-    }
-
-    // Load settings before building the app so we can construct the right
-    // sync provider. Falls back to defaults if no settings file exists yet.
-    let settings: Settings = settings_file_path()
-        .map(|p| load_settings_from(&p))
-        .unwrap_or_default();
-    let sync_provider = provider_for_backend(&settings.sync_backend);
-
-    // Restore the previous window geometry if the player has one saved.
-    // Otherwise open at the platform default (1280×800, centred on the
-    // primary monitor) — `apply_smart_default_window_size` will resize
-    // up to a monitor-relative target on the first frame so HiDPI / 4K
-    // sessions don't end up with a comparatively tiny window.
-    let had_saved_geometry = settings.window_geometry.is_some();
-    let (window_resolution, window_position) = match settings.window_geometry {
-        Some(geom) => (
-            (geom.width, geom.height).into(),
-            WindowPosition::At(IVec2::new(geom.x, geom.y)),
-        ),
-        None => (
-            (1280u32, 800u32).into(),
-            WindowPosition::Centered(MonitorSelection::Primary),
-        ),
-    };
-
-    let mut app = App::new();
-
-    // The card-theme system's `themes://` asset source must be
-    // registered *before* `DefaultPlugins` builds `AssetPlugin`,
-    // because that plugin freezes the asset-source list at build
-    // time. The matching `AssetSourcesPlugin` (added below) finishes
-    // the wiring after `DefaultPlugins` by populating the embedded
-    // default theme into Bevy's `EmbeddedAssetRegistry`.
-    register_theme_asset_sources(&mut app);
-
-    app
-        .add_plugins(
-            DefaultPlugins
-                .set(WindowPlugin {
-                    primary_window: Some(Window {
-                        title: "Solitaire Quest".into(),
-                        // X11/Wayland WM_CLASS so taskbar managers group
-                        // multiple windows of this app correctly.
-                        name: Some("solitaire-quest".into()),
-                        resolution: window_resolution,
-                        position: window_position,
-                        // AutoNoVsync prefers Mailbox (triple-buffered) and
-                        // falls back to Immediate, eliminating the vsync stall
-                        // that AutoVsync produces during continuous window
-                        // resize on X11 / Wayland. The game's frame budget is
-                        // small enough that a few stray dropped frames from
-                        // disabling vsync are imperceptible.
-                        present_mode: PresentMode::AutoNoVsync,
-                        resize_constraints: bevy::window::WindowResizeConstraints {
-                            min_width: 800.0,
-                            min_height: 600.0,
-                            ..default()
-                        },
-                        ..default()
-                    }),
-                    ..default()
-                })
-                // The `assets/` directory lives at the workspace root, but
-                // Bevy resolves `AssetPlugin::file_path` relative to the
-                // binary package's `CARGO_MANIFEST_DIR` (`solitaire_app/`).
-                // Point one level up so `cargo run -p solitaire_app` finds
-                // card faces, backs, backgrounds, and the UI font.
-                .set(bevy::asset::AssetPlugin {
-                    file_path: "../assets".to_string(),
-                    ..default()
-                }),
-        )
-        .add_plugins(AssetSourcesPlugin)
-        .add_plugins(ThemePlugin)
-        .add_plugins(ThemeRegistryPlugin)
-        .add_plugins(FontPlugin)
-        .add_plugins(GamePlugin)
-        .add_plugins(TablePlugin)
-        .add_plugins(CardPlugin)
-        .add_plugins(CursorPlugin)
-        .add_plugins(InputPlugin)
-        .add_plugins(RadialMenuPlugin)
-        .add_plugins(SelectionPlugin)
-        .add_plugins(AnimationPlugin)
-        .add_plugins(FeedbackAnimPlugin)
-        .add_plugins(CardAnimationPlugin)
-        .add_plugins(AutoCompletePlugin)
-        .add_plugins(ReplayPlaybackPlugin)
-        .add_plugins(ReplayOverlayPlugin)
-        .add_plugins(StatsPlugin::default())
-        .add_plugins(ProgressPlugin::default())
-        .add_plugins(AchievementPlugin::default())
-        .add_plugins(DailyChallengePlugin)
-        .add_plugins(WeeklyGoalsPlugin)
-        .add_plugins(ChallengePlugin)
-        .add_plugins(TimeAttackPlugin)
-        .add_plugins(HudPlugin)
-        .add_plugins(HelpPlugin)
-        .add_plugins(HomePlugin::default())
-        .add_plugins(ProfilePlugin)
-        .add_plugins(PausePlugin)
-        .add_plugins(SettingsPlugin::default())
-        .add_plugins(AudioPlugin)
-        .add_plugins(OnboardingPlugin)
-        .add_plugins(SyncPlugin::new(sync_provider))
-        .add_plugins(LeaderboardPlugin)
-        .add_plugins(WinSummaryPlugin)
-        .add_plugins(UiModalPlugin)
-        .add_plugins(UiFocusPlugin)
-        .add_plugins(UiTooltipPlugin)
-        .add_plugins(SplashPlugin);
-
-    // Smart default window sizing: when no saved geometry was loaded,
-    // resize the freshly-opened 1280×800 window to ~70 % of the primary
-    // monitor's logical size on the first frame. Without this, a 4K
-    // monitor opens the same 1280×800 window that a 1080p monitor
-    // does — visually tiny relative to screen. Skipped entirely when
-    // saved geometry was applied; the player's preference always wins.
-    if !had_saved_geometry {
-        app.add_systems(Update, apply_smart_default_window_size);
-    }
-
-    app.run();
-}
-
-/// One-shot Update system that runs only on launches without saved
-/// window geometry. Resizes the primary window to a fraction of the
-/// primary monitor's *logical* size — bigger monitors get bigger
-/// windows automatically. Logical size already accounts for the OS's
-/// HiDPI scale factor, so a 2880×1800 Retina display reporting
-/// scale_factor 2.0 yields a 1440×900 logical size and a 1008×630
-/// target window — same physical inches as a 1920×1080 monitor with
-/// scale_factor 1.0 yielding 1344×756.
-///
-/// Uses `Local<bool>` to make itself one-shot rather than introducing
-/// a dedicated resource. The Update tick is necessary because Bevy
-/// populates the `Monitor` entities asynchronously after winit's
-/// Resumed event fires; they may not exist on the first Startup pass.
-fn apply_smart_default_window_size(
-    mut applied: Local<bool>,
-    monitors: Query<&Monitor, With<PrimaryMonitor>>,
-    mut windows: Query<&mut Window, With<PrimaryWindow>>,
-) {
-    if *applied {
-        return;
-    }
-    let Ok(monitor) = monitors.single() else {
-        // Primary monitor not yet spawned by bevy_winit. Try again
-        // next frame; the cost is one early-exit per tick until
-        // monitors arrive (typically frame 1 or 2).
-        return;
-    };
-    let Ok(mut window) = windows.single_mut() else {
-        return;
-    };
-
-    let scale = monitor.scale_factor as f32;
-    if scale <= 0.0 {
-        // Defensive: a zero or negative scale factor would NaN the
-        // arithmetic below. Bail and accept the default size.
-        *applied = true;
-        return;
-    }
-    let logical_w = monitor.physical_width as f32 / scale;
-    let logical_h = monitor.physical_height as f32 / scale;
-
-    // Target 70 % of monitor in each dimension, clamped to the
-    // existing 800×600 minimum and the monitor's own logical size
-    // (so we never request a window larger than the screen).
-    let target_w = (logical_w * 0.7).clamp(800.0, logical_w);
-    let target_h = (logical_h * 0.7).clamp(600.0, logical_h);
-
-    // Resize only when the change is meaningful — at exactly 1280×800
-    // on a 1920×1080 monitor the new target is 1344×756 (only ~5 %
-    // wider), worth the resize; at the same default on an 800×600
-    // monitor the clamp pins us at 800×600 and we shouldn't resize.
-    let curr_w = window.resolution.width();
-    let curr_h = window.resolution.height();
-    if (curr_w - target_w).abs() > 8.0 || (curr_h - target_h).abs() > 8.0 {
-        window.resolution.set(target_w, target_h);
-    }
-    *applied = true;
-}
-
-/// Wraps the default panic hook with one that also appends a crash log
-/// to `<data_dir>/crash.log` (next to `settings.json`). The default hook
-/// still runs afterwards, so stderr output and debugger integration are
-/// unchanged. If the data directory is unavailable, the wrapper silently
-/// falls through — the default hook handles output either way.
-fn install_crash_log_hook() {
-    let crash_log_path = settings_file_path().and_then(|p| {
-        p.parent()
-            .map(|parent| parent.join("crash.log"))
-    });
-    let default_hook = std::panic::take_hook();
-    std::panic::set_hook(Box::new(move |info| {
-        if let Some(path) = crash_log_path.as_ref()
-            && let Ok(mut file) = OpenOptions::new()
-                .create(true)
-                .append(true)
-                .open(path)
-        {
-            // Plain unix-seconds timestamp keeps the format trivially
-            // parseable and avoids pulling in chrono just for this.
-            let secs = SystemTime::now()
-                .duration_since(UNIX_EPOCH)
-                .map_or(0, |d| d.as_secs());
-            let _ = writeln!(file, "----- t={secs} -----\n{info}\n");
-        }
-        default_hook(info);
-    }));
 }

solitaire_data/Cargo.toml

@@ -13,10 +13,19 @@ chrono         = { workspace = true }
 thiserror      = { workspace = true }
 async-trait    = { workspace = true }
 dirs           = { workspace = true }
-keyring-core   = { workspace = true }
 reqwest        = { workspace = true }
 tokio          = { workspace = true }
 
+# `keyring-core` is the typed Entry/Error API used by
+# `auth_tokens`. The crate's own dependency tree pulls in
+# `rpassword` which uses `libc::__errno_location` — a symbol the
+# Android NDK doesn't expose (`__errno` lives at a different path
+# on bionic). On Android `auth_tokens` falls back to a stub
+# implementation that always returns `KeychainUnavailable`; the
+# real backend lands when we wire Android Keystore via JNI.
+[target.'cfg(not(target_os = "android"))'.dependencies]
+keyring-core   = { workspace = true }
+
 [dev-dependencies]
 solitaire_server = { path = "../solitaire_server" }
 solitaire_sync   = { workspace = true }

solitaire_data/src/achievements.rs

@@ -15,7 +15,7 @@ const FILE_NAME: &str = "achievements.json";
 
 /// Platform-specific default path for `achievements.json`.
 pub fn achievements_file_path() -> Option<PathBuf> {
-    dirs::data_dir().map(|d| d.join(APP_DIR_NAME).join(FILE_NAME))
+    crate::data_dir().map(|d| d.join(APP_DIR_NAME).join(FILE_NAME))
 }
 
 /// Load achievements from an explicit path. Returns `Vec::new()` if the file

solitaire_data/src/auth_tokens.rs

@@ -14,8 +14,19 @@
 //! the Bevy `App`). If no default store is set, all operations in this module
 //! will return [`TokenError::KeychainUnavailable`].
 //!
+//! # Android stub
+//!
+//! `keyring-core` cannot compile for the android target (its `rpassword`
+//! transitive dep uses `libc::__errno_location`, which Android's bionic
+//! doesn't expose). On Android every function in this module returns
+//! [`TokenError::KeychainUnavailable`] so callers can detect the fallback
+//! the same way they handle a Linux box without Secret Service. The
+//! real Android backend will arrive in the Phase-Android round when we
+//! wire Android Keystore via JNI.
+//!
 //! # Note: no unit tests — requires live OS keychain.
 
+#[cfg(not(target_os = "android"))]
 use keyring_core::Entry;
 use thiserror::Error;
 
@@ -34,9 +45,11 @@ pub enum TokenError {
 }
 
 /// Service name used to namespace all keychain entries for this application.
+#[cfg(not(target_os = "android"))]
 const SERVICE: &str = "solitaire_quest_server";
 
 /// Map a `keyring_core::Error` to the appropriate `TokenError`.
+#[cfg(not(target_os = "android"))]
 fn map_keyring_err(err: keyring_core::Error, username: &str) -> TokenError {
     let msg = err.to_string();
     match err {
@@ -51,6 +64,7 @@ fn map_keyring_err(err: keyring_core::Error, username: &str) -> TokenError {
 /// Store the access and refresh tokens for `username` in the OS keychain.
 ///
 /// Any previously stored tokens for that username are overwritten.
+#[cfg(not(target_os = "android"))]
 pub fn store_tokens(
     username: &str,
     access_token: &str,
@@ -72,6 +86,7 @@ pub fn store_tokens(
 /// Load the stored access token for `username` from the OS keychain.
 ///
 /// Returns [`TokenError::NotFound`] if no token has been stored yet.
+#[cfg(not(target_os = "android"))]
 pub fn load_access_token(username: &str) -> Result<String, TokenError> {
     Entry::new(SERVICE, &format!("{username}_access"))
         .map_err(|e| map_keyring_err(e, username))?
@@ -82,6 +97,7 @@ pub fn load_access_token(username: &str) -> Result<String, TokenError> {
 /// Load the stored refresh token for `username` from the OS keychain.
 ///
 /// Returns [`TokenError::NotFound`] if no token has been stored yet.
+#[cfg(not(target_os = "android"))]
 pub fn load_refresh_token(username: &str) -> Result<String, TokenError> {
     Entry::new(SERVICE, &format!("{username}_refresh"))
         .map_err(|e| map_keyring_err(e, username))?
@@ -93,6 +109,7 @@ pub fn load_refresh_token(username: &str) -> Result<String, TokenError> {
 ///
 /// Intended to be called on logout or account deletion. Missing entries are
 /// silently ignored (the tokens are already gone, which is the desired state).
+#[cfg(not(target_os = "android"))]
 pub fn delete_tokens(username: &str) -> Result<(), TokenError> {
     match Entry::new(SERVICE, &format!("{username}_access"))
         .map_err(|e| map_keyring_err(e, username))?
@@ -112,3 +129,37 @@ pub fn delete_tokens(username: &str) -> Result<(), TokenError> {
 
     Ok(())
 }
+
+// -------------------------------------------------------------------
+// Android stub — same public API, always returns KeychainUnavailable.
+// Lets `sync_client::*` compile unchanged on Android; the runtime
+// effect is "session login required every launch", same as a Linux
+// box without Secret Service.
+// -------------------------------------------------------------------
+
+#[cfg(target_os = "android")]
+const ANDROID_STUB_MSG: &str = "android stub: keychain not yet wired (Phase-Android task)";
+
+#[cfg(target_os = "android")]
+pub fn store_tokens(
+    _username: &str,
+    _access_token: &str,
+    _refresh_token: &str,
+) -> Result<(), TokenError> {
+    Err(TokenError::KeychainUnavailable(ANDROID_STUB_MSG.to_string()))
+}
+
+#[cfg(target_os = "android")]
+pub fn load_access_token(_username: &str) -> Result<String, TokenError> {
+    Err(TokenError::KeychainUnavailable(ANDROID_STUB_MSG.to_string()))
+}
+
+#[cfg(target_os = "android")]
+pub fn load_refresh_token(_username: &str) -> Result<String, TokenError> {
+    Err(TokenError::KeychainUnavailable(ANDROID_STUB_MSG.to_string()))
+}
+
+#[cfg(target_os = "android")]
+pub fn delete_tokens(_username: &str) -> Result<(), TokenError> {
+    Err(TokenError::KeychainUnavailable(ANDROID_STUB_MSG.to_string()))
+}

solitaire_data/src/lib.rs

@@ -163,3 +163,6 @@ pub use replay::{
     replay_history_path, save_replay_history_to, Replay, ReplayHistory, ReplayMove,
     REPLAY_HISTORY_CAP, REPLAY_HISTORY_SCHEMA_VERSION, REPLAY_SCHEMA_VERSION,
 };
+
+pub mod platform;
+pub use platform::data_dir;

solitaire_data/src/platform.rs

@@ -0,0 +1,92 @@
+//! Per-platform resolution of the per-user data directory.
+//!
+//! The rest of `solitaire_data` (settings, stats, achievements,
+//! replays, progress, game state) and the engine's user-themes
+//! discovery all need a base path under which to nest
+//! `solitaire_quest/<file>`. On desktop the right answer is
+//! `dirs::data_dir()` (which resolves to platform-appropriate
+//! locations: `~/.local/share` on Linux, `~/Library/Application
+//! Support` on macOS, `%APPDATA%` on Windows). On Android the
+//! `dirs` crate returns `None`, which would silently disable
+//! every persistence path — settings, stats, replays, the lot.
+//!
+//! [`data_dir`] is a thin shim that returns the right base path
+//! per target. Callers continue to append
+//! `solitaire_quest/<file>` themselves, so the on-disk layout is
+//! identical across platforms (the per-app Android sandbox makes
+//! the extra `solitaire_quest/` segment harmless, and a `tar`
+//! export from one platform deserialises cleanly on another).
+//!
+//! # Why hardcode on Android?
+//!
+//! The "proper" Android answer is JNI: call back into Java to
+//! invoke `Activity.getFilesDir()`. That requires plumbing an
+//! `AndroidApp` context through Bevy's startup hooks and a
+//! per-call JNI bridge — meaningfully more code than the
+//! sandbox-guaranteed `/data/data/<package>/files` path. The
+//! package name `com.solitairequest.app` is fixed at compile
+//! time in `solitaire_app/Cargo.toml`'s
+//! `[package.metadata.android]` block, so a hardcoded path is
+//! safe until that ever changes (at which point this constant
+//! moves with it).
+
+use std::path::PathBuf;
+
+/// Hardcoded per-app private files directory on Android.
+///
+/// Matches `[package.metadata.android]` in `solitaire_app/Cargo.toml`.
+/// The Android sandbox guarantees this path exists, is writable,
+/// and is private to the app — no JNI needed. Update both this
+/// constant and the Cargo metadata together if the package id
+/// ever changes.
+#[cfg(target_os = "android")]
+const ANDROID_APP_FILES_DIR: &str = "/data/data/com.solitairequest.app/files";
+
+/// Returns the per-user data directory for the current target,
+/// or `None` if the platform doesn't expose one (rare; usually
+/// indicates a broken `$HOME` or `$XDG_*` configuration on a
+/// minimal Linux container).
+///
+/// Callers append `solitaire_quest/<file>` themselves. See the
+/// module-level doc comment for the per-platform behaviour and
+/// why Android uses a hardcoded path.
+pub fn data_dir() -> Option<PathBuf> {
+    #[cfg(target_os = "android")]
+    {
+        Some(PathBuf::from(ANDROID_APP_FILES_DIR))
+    }
+    #[cfg(not(target_os = "android"))]
+    {
+        dirs::data_dir()
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    /// On every supported desktop target the OS reports a usable
+    /// data directory. This test only runs on desktop because the
+    /// Android branch returns a fixed string regardless of host
+    /// state, and asserting on a fixed string is a tautology.
+    #[cfg(any(target_os = "linux", target_os = "macos", target_os = "windows"))]
+    #[test]
+    fn data_dir_returns_some_on_desktop_targets() {
+        let dir = data_dir().expect("desktop targets must report a data dir");
+        assert!(
+            dir.is_absolute(),
+            "data_dir() must return an absolute path on desktop, got {dir:?}",
+        );
+    }
+
+    /// On Android the hardcoded path matches the package id pinned
+    /// in `solitaire_app/Cargo.toml`'s `[package.metadata.android]`.
+    /// If a future change rotates that id, this test fails loudly
+    /// so the path constant moves with it.
+    #[cfg(target_os = "android")]
+    #[test]
+    fn data_dir_returns_sandbox_path_on_android() {
+        let dir = data_dir().expect("android must report a data dir");
+        assert_eq!(dir, PathBuf::from("/data/data/com.solitairequest.app/files"));
+    }
+}

solitaire_data/src/progress.rs

@@ -46,7 +46,7 @@ pub fn xp_for_win(time_seconds: u64, used_undo: bool) -> u64 {
 
 /// Platform-specific default path for `progress.json`.
 pub fn progress_file_path() -> Option<PathBuf> {
-    dirs::data_dir().map(|d| d.join(APP_DIR_NAME).join(FILE_NAME))
+    crate::data_dir().map(|d| d.join(APP_DIR_NAME).join(FILE_NAME))
 }
 
 /// Load progress from an explicit path. Returns `default()` if missing/corrupt.

solitaire_data/src/replay.rs

@@ -230,21 +230,21 @@ impl ReplayHistory {
 }
 
 /// Returns the platform-specific path to `latest_replay.json`, or `None`
-/// if `dirs::data_dir()` is unavailable (e.g. minimal Linux containers).
+/// if `crate::data_dir()` is unavailable (e.g. minimal Linux containers).
 #[deprecated(
     note = "single-slot replay storage replaced by the rolling history at \
             replay_history_path(); kept for the one-shot legacy migration \
             in migrate_legacy_latest_replay"
 )]
 pub fn latest_replay_path() -> Option<PathBuf> {
-    dirs::data_dir().map(|d| d.join(APP_DIR_NAME).join(LATEST_REPLAY_FILE_NAME))
+    crate::data_dir().map(|d| d.join(APP_DIR_NAME).join(LATEST_REPLAY_FILE_NAME))
 }
 
 /// Returns the platform-specific path to `replays.json`, the rolling
-/// history file, or `None` if `dirs::data_dir()` is unavailable (e.g.
+/// history file, or `None` if `crate::data_dir()` is unavailable (e.g.
 /// minimal Linux containers).
 pub fn replay_history_path() -> Option<PathBuf> {
-    dirs::data_dir().map(|d| d.join(APP_DIR_NAME).join(REPLAY_HISTORY_FILE_NAME))
+    crate::data_dir().map(|d| d.join(APP_DIR_NAME).join(REPLAY_HISTORY_FILE_NAME))
 }
 
 /// Save a [`Replay`] atomically to `path` using the standard `.tmp` →

solitaire_data/src/settings.rs

@@ -181,6 +181,20 @@ pub struct Settings {
     /// solver retry loop — see `solitaire_engine::handle_new_game`.
     #[serde(default)]
     pub winnable_deals_only: bool,
+    /// When `true`, suppresses the launch-time
+    /// `apply_smart_default_window_size` system: the window opens at
+    /// the literal `(1280, 800)` default instead of resizing to ~70 %
+    /// of the primary monitor's logical size on the first frame. For
+    /// players who specifically prefer the 1280×800 baseline on every
+    /// fresh launch (i.e. installs without saved geometry).
+    ///
+    /// Older `settings.json` files written before this field existed
+    /// deserialize cleanly to `false` via `#[serde(default)]`, which
+    /// preserves the smart-default behaviour shipped in v0.19.0.
+    /// Saved-geometry launches are unaffected by this flag — the
+    /// player's last window size always wins.
+    #[serde(default)]
+    pub disable_smart_default_size: bool,
     /// Per-move duration during replay playback, in seconds. Range
     /// `[REPLAY_MOVE_INTERVAL_MIN_SECS, REPLAY_MOVE_INTERVAL_MAX_SECS]`;
     /// default mirrors `solitaire_engine::replay_playback::REPLAY_MOVE_INTERVAL_SECS`
@@ -306,6 +320,7 @@ impl Default for Settings {
             tooltip_delay_secs: default_tooltip_delay(),
             time_bonus_multiplier: default_time_bonus_multiplier(),
             winnable_deals_only: false,
+            disable_smart_default_size: false,
             replay_move_interval_secs: default_replay_move_interval_secs(),
         }
     }
@@ -385,9 +400,9 @@ impl Settings {
 }
 
 /// Returns the platform-specific path to `settings.json`, or `None` if
-/// `dirs::data_dir()` is unavailable.
+/// the platform's data directory is unavailable.
 pub fn settings_file_path() -> Option<PathBuf> {
-    dirs::data_dir().map(|d| d.join(APP_DIR_NAME).join(SETTINGS_FILE_NAME))
+    crate::data_dir().map(|d| d.join(APP_DIR_NAME).join(SETTINGS_FILE_NAME))
 }
 
 /// Load settings from an explicit path. Returns `Settings::default()` if the

solitaire_data/src/storage.rs

@@ -19,9 +19,9 @@ const GAME_STATE_FILE_NAME: &str = "game_state.json";
 const TIME_ATTACK_SESSION_FILE_NAME: &str = "time_attack_session.json";
 
 /// Returns the platform-specific path to `stats.json`, or `None` if
-/// `dirs::data_dir()` is unavailable (e.g. minimal Linux containers).
+/// `crate::data_dir()` is unavailable (e.g. minimal Linux containers).
 pub fn stats_file_path() -> Option<PathBuf> {
-    dirs::data_dir().map(|d| d.join(APP_DIR_NAME).join(STATS_FILE_NAME))
+    crate::data_dir().map(|d| d.join(APP_DIR_NAME).join(STATS_FILE_NAME))
 }
 
 /// Load stats from an explicit path. Returns `StatsSnapshot::default()` if
@@ -69,9 +69,9 @@ pub fn save_stats(stats: &StatsSnapshot) -> io::Result<()> {
 // ---------------------------------------------------------------------------
 
 /// Returns the platform-specific path to `game_state.json`, or `None` if
-/// `dirs::data_dir()` is unavailable.
+/// `crate::data_dir()` is unavailable.
 pub fn game_state_file_path() -> Option<PathBuf> {
-    dirs::data_dir().map(|d| d.join(APP_DIR_NAME).join(GAME_STATE_FILE_NAME))
+    crate::data_dir().map(|d| d.join(APP_DIR_NAME).join(GAME_STATE_FILE_NAME))
 }
 
 /// Load an in-progress `GameState` from `path`. Returns `None` if the file is
@@ -129,7 +129,7 @@ pub fn delete_game_state_at(path: &Path) -> io::Result<()> {
 /// in an atomic save. Safe to call on startup; missing or unreadable entries
 /// are silently skipped.
 pub fn cleanup_orphaned_tmp_files() -> io::Result<()> {
-    let dir = match dirs::data_dir() {
+    let dir = match crate::data_dir() {
         Some(d) => d.join(APP_DIR_NAME),
         None => return Ok(()),
     };
@@ -179,9 +179,9 @@ pub struct TimeAttackSession {
 }
 
 /// Returns the platform-specific path to `time_attack_session.json`, or
-/// `None` if `dirs::data_dir()` is unavailable.
+/// `None` if `crate::data_dir()` is unavailable.
 pub fn time_attack_session_path() -> Option<PathBuf> {
-    dirs::data_dir().map(|d| d.join(APP_DIR_NAME).join(TIME_ATTACK_SESSION_FILE_NAME))
+    crate::data_dir().map(|d| d.join(APP_DIR_NAME).join(TIME_ATTACK_SESSION_FILE_NAME))
 }
 
 /// Save a Time Attack session atomically. Mirrors `save_game_state_to`'s

solitaire_engine/Cargo.toml

@@ -21,6 +21,15 @@ tiny-skia      = { workspace = true }
 ron            = { workspace = true }
 dirs           = { workspace = true }
 zip            = { workspace = true }
+
+# `arboard` provides clipboard access for the Stats overlay's
+# "Copy share link" button. The crate has no Android backend
+# (its `platform::Clipboard` module is unimplemented for the
+# android target — `cargo apk build` fails with E0433 if this is
+# left unconditional). On Android the same button surfaces an
+# informational toast instead; see
+# `stats_plugin::handle_copy_share_link_button`.
+[target.'cfg(not(target_os = "android"))'.dependencies]
 arboard        = { workspace = true }
 
 [dev-dependencies]

solitaire_engine/src/animation_plugin.rs

@@ -30,8 +30,9 @@ use crate::progress_plugin::LevelUpEvent;
 use crate::settings_plugin::{SettingsChangedEvent, SettingsResource};
 use crate::time_attack_plugin::TimeAttackEndedEvent;
 use crate::ui_theme::{
-    scaled_duration, ACCENT_PRIMARY, MOTION_CASCADE_SLIDE_SECS, MOTION_CASCADE_STAGGER_SECS,
+    scaled_duration, ACCENT_SECONDARY, BG_ELEVATED, MOTION_CASCADE_SLIDE_SECS,
-    MOTION_SLIDE_SECS, TEXT_PRIMARY, VAL_SPACE_2, VAL_SPACE_3, VAL_SPACE_4, Z_TOAST,
+    MOTION_CASCADE_STAGGER_SECS, MOTION_SLIDE_SECS, RADIUS_MD, STATE_DANGER, STATE_INFO,
+    STATE_WARNING, TEXT_PRIMARY, TYPE_BODY_LG, VAL_SPACE_2, VAL_SPACE_3, VAL_SPACE_4, Z_TOAST,
 };
 use crate::weekly_goals_plugin::WeeklyGoalCompletedEvent;
 
@@ -339,6 +340,7 @@ fn handle_achievement_toast(
             &mut commands,
             format!("Achievement: {}", display_name_for(&ev.0.id)),
             ACHIEVEMENT_TOAST_SECS,
+            ToastVariant::Celebration,
         );
     }
 }
@@ -349,6 +351,7 @@ fn handle_levelup_toast(mut commands: Commands, mut events: MessageReader<LevelU
             &mut commands,
             format!("Level Up! → {}", ev.new_level),
             LEVELUP_TOAST_SECS,
+            ToastVariant::Celebration,
         );
     }
 }
@@ -358,7 +361,12 @@ fn handle_daily_goal_announcement_toast(
     mut events: MessageReader<DailyGoalAnnouncementEvent>,
 ) {
     for ev in events.read() {
-        spawn_toast(&mut commands, format!("Goal: {}", ev.0), DAILY_TOAST_SECS);
+        spawn_toast(
+            &mut commands,
+            format!("Goal: {}", ev.0),
+            DAILY_TOAST_SECS,
+            ToastVariant::Info,
+        );
     }
 }
 
@@ -371,6 +379,7 @@ fn handle_daily_toast(
             &mut commands,
             format!("Daily Challenge Complete! (Streak: {})", ev.streak),
             DAILY_TOAST_SECS,
+            ToastVariant::Celebration,
         );
     }
 }
@@ -384,6 +393,7 @@ fn handle_weekly_toast(
             &mut commands,
             format!("Weekly Goal: {}", ev.description),
             WEEKLY_TOAST_SECS,
+            ToastVariant::Celebration,
         );
     }
 }
@@ -397,6 +407,7 @@ fn handle_time_attack_toast(
             &mut commands,
             format!("Time Attack: {} win{}", ev.wins, if ev.wins == 1 { "" } else { "s" }),
             TIME_ATTACK_TOAST_SECS,
+            ToastVariant::Info,
         );
     }
 }
@@ -410,6 +421,7 @@ fn handle_challenge_toast(
             &mut commands,
             format!("Challenge {} cleared!", ev.previous_index.saturating_add(1)),
             CHALLENGE_TOAST_SECS,
+            ToastVariant::Celebration,
         );
     }
 }
@@ -429,11 +441,21 @@ fn handle_settings_toast(
         *last_music = Some(music);
         if sfx_changed {
             let pct = (sfx * 100.0).round() as i32;
-            spawn_toast(&mut commands, format!("SFX: {pct}%"), VOLUME_TOAST_SECS);
+            spawn_toast(
+                &mut commands,
+                format!("SFX: {pct}%"),
+                VOLUME_TOAST_SECS,
+                ToastVariant::Info,
+            );
         }
         if music_changed {
             let pct = (music * 100.0).round() as i32;
-            spawn_toast(&mut commands, format!("Music: {pct}%"), VOLUME_TOAST_SECS);
+            spawn_toast(
+                &mut commands,
+                format!("Music: {pct}%"),
+                VOLUME_TOAST_SECS,
+                ToastVariant::Info,
+            );
         }
     }
 }
@@ -449,7 +471,12 @@ fn handle_auto_complete_toast(
         if s.active {
             if !*shown {
                 *shown = true;
-                spawn_toast(&mut commands, "Auto-completing…".to_string(), 2.0);
+                spawn_toast(
+                    &mut commands,
+                    "Auto-completing…".to_string(),
+                    2.0,
+                    ToastVariant::Info,
+                );
             }
         } else {
             *shown = false;
@@ -513,37 +540,72 @@ fn drive_toast_display(
         }
 }
 
-/// Spawns a centered top-of-screen `ToastEntity` for the queued toast system.
+/// Visual variant of a toast — drives the 1px border accent per the
+/// design-system toast spec
+/// (`docs/ui-mockups/design-system.md` → "Toasts").
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum ToastVariant {
+    /// Neutral system message — teal border. Default for `InfoToastEvent`,
+    /// settings volume notifications, and the auto-complete announcement.
+    Info,
+    /// Caution / penalty — gold border. Currently unused by an in-engine
+    /// event; kept so future warning-flavoured toasts have a slot.
+    #[allow(dead_code)]
+    Warning,
+    /// Failure / rejected action — pink border. Currently unused; kept so
+    /// future error-flavoured toasts have a slot.
+    #[allow(dead_code)]
+    Error,
+    /// Reward / milestone — lavender border. Used for XP awards,
+    /// achievement unlocks, level-ups, daily/weekly/challenge completions.
+    Celebration,
+}
+
+impl ToastVariant {
+    /// Returns the 1px border accent for this variant per the design
+    /// system. Single source of truth — `spawn_toast` and
+    /// `spawn_queued_toast` both consume it so a future palette swap
+    /// only has to touch the token, never every call site.
+    fn border_color(self) -> Color {
+        match self {
+            ToastVariant::Info => STATE_INFO,
+            ToastVariant::Warning => STATE_WARNING,
+            ToastVariant::Error => STATE_DANGER,
+            ToastVariant::Celebration => ACCENT_SECONDARY,
+        }
+    }
+}
+
+/// Spawns a bottom-anchored `ToastEntity` for the queued toast system.
+///
+/// Queued toasts always carry [`ToastVariant::Info`] — the queue is fed
+/// by [`InfoToastEvent`] which is by definition neutral system info.
+/// Variants other than `Info` belong on the immediate-fire path
+/// ([`spawn_toast`]) where the call site knows the semantic intent.
 fn spawn_queued_toast(commands: &mut Commands, message: String) -> Entity {
-    commands
+    spawn_toast_node(
-        .spawn((
+        commands,
         ToastEntity,
-            Node {
+        message,
-                position_type: PositionType::Absolute,
+        ToastVariant::Info,
-                left: Val::Percent(15.0),
+        // Slightly taller anchor than the immediate-fire path so a
-                top: Val::Percent(8.0),
+        // queued info banner doesn't collide with a celebration toast
-                width: Val::Percent(70.0),
+        // fired in the same frame.
-                padding: UiRect::axes(VAL_SPACE_4, VAL_SPACE_2),
+        Val::Percent(6.0),
-                justify_content: JustifyContent::Center,
+        Val::Percent(15.0),
-                align_items: AlignItems::Center,
+        Val::Percent(70.0),
-                ..default()
+        UiRect::axes(VAL_SPACE_4, VAL_SPACE_2),
-            },
+    )
-            BackgroundColor(Color::srgba(0.0, 0.0, 0.0, 0.60)),
-            ZIndex(Z_TOAST),
-        ))
-        .with_children(|b| {
-            b.spawn((
-                Text::new(message),
-                TextFont { font_size: 22.0, ..default() },
-                TextColor(TEXT_PRIMARY),
-            ));
-        })
-        .id()
 }
 
 fn handle_xp_awarded_toast(mut commands: Commands, mut events: MessageReader<XpAwardedEvent>) {
     for ev in events.read() {
-        spawn_toast(&mut commands, format!("+{} XP", ev.amount), 3.0);
+        spawn_toast(
+            &mut commands,
+            format!("+{} XP", ev.amount),
+            3.0,
+            ToastVariant::Celebration,
+        );
     }
 }
 
@@ -569,33 +631,88 @@ fn tick_toasts(
     }
 }
 
-fn spawn_toast(commands: &mut Commands, message: String, duration_secs: f32) {
+/// Spawns a bottom-anchored fire-and-forget toast that despawns after
+/// `duration_secs`. The `variant` selects the 1px accent border color
+/// per the design-system toast spec.
+fn spawn_toast(
+    commands: &mut Commands,
+    message: String,
+    duration_secs: f32,
+    variant: ToastVariant,
+) {
+    spawn_toast_node(
+        commands,
+        (ToastOverlay, ToastTimer(duration_secs)),
+        message,
+        variant,
+        // Sits above the queued banner so a celebration toast spawned
+        // alongside a queued info message remains readable.
+        Val::Percent(14.0),
+        Val::Percent(25.0),
+        Val::Percent(50.0),
+        UiRect::axes(VAL_SPACE_4, VAL_SPACE_3),
+    );
+}
+
+/// Common toast-spawn primitive used by both the queued and the
+/// fire-and-forget paths. Centralizes the design-system contract so a
+/// future spec change (e.g. a different border thickness) is a
+/// one-line edit.
+///
+/// The Terminal toast spec from `design-system.md`:
+/// - Opaque [`BG_ELEVATED`] fill (no translucent dim).
+/// - 1px border in the variant's accent color.
+/// - [`TYPE_BODY_LG`] (18px) `TEXT_PRIMARY` caption — the spec calls
+///   for 16px, but the engine type scale only carries 14/18/26/40/...
+///   rungs; 18 is the closest rung that preserves the scale invariants
+///   tested in `ui_theme::tests`.
+/// - [`RADIUS_MD`] corners.
+/// - Bottom-anchored absolute position; `bottom_pct` differs between
+///   queued and immediate paths so they layer instead of overlap.
+// The 8-argument signature is intentional — these are the per-toast
+// layout values that genuinely differ between the queued and fire-and-
+// forget call sites. A struct wrapper would just rename the same data.
+#[allow(clippy::too_many_arguments)]
+fn spawn_toast_node<B: Bundle>(
+    commands: &mut Commands,
+    bundle: B,
+    message: String,
+    variant: ToastVariant,
+    bottom_pct: Val,
+    left_pct: Val,
+    width_pct: Val,
+    padding: UiRect,
+) -> Entity {
     commands
         .spawn((
-            ToastOverlay,
+            bundle,
-            ToastTimer(duration_secs),
             Node {
                 position_type: PositionType::Absolute,
-                left: Val::Percent(25.0),
+                left: left_pct,
-                top: Val::Percent(42.0),
+                bottom: bottom_pct,
-                width: Val::Percent(50.0),
+                width: width_pct,
-                padding: UiRect::axes(VAL_SPACE_4, VAL_SPACE_3),
+                padding,
                 justify_content: JustifyContent::Center,
                 align_items: AlignItems::Center,
+                border: UiRect::all(Val::Px(1.0)),
+                border_radius: BorderRadius::all(Val::Px(RADIUS_MD)),
                 ..default()
             },
-            BackgroundColor(Color::srgba(0.0, 0.0, 0.0, 0.72)),
+            BackgroundColor(BG_ELEVATED),
+            BorderColor::all(variant.border_color()),
+            ZIndex(Z_TOAST),
         ))
         .with_children(|b| {
             b.spawn((
                 Text::new(message),
                 TextFont {
-                    font_size: 32.0,
+                    font_size: TYPE_BODY_LG,
                     ..default()
                 },
-                TextColor(ACCENT_PRIMARY),
+                TextColor(TEXT_PRIMARY),
             ));
-        });
+        })
+        .id()
 }
 
 #[cfg(test)]
@@ -703,6 +820,41 @@ mod tests {
         assert!(anim_speed_to_secs(&AnimSpeed::Fast) < anim_speed_to_secs(&AnimSpeed::Normal));
     }
 
+    /// Pin every `ToastVariant` to its design-system border colour.
+    /// A future palette swap that touches `STATE_INFO`, `STATE_WARNING`,
+    /// `STATE_DANGER`, or `ACCENT_SECONDARY` flows through this mapping
+    /// automatically; this test guards against accidental remappings.
+    #[test]
+    fn toast_variant_border_colors_match_design_tokens() {
+        assert_eq!(ToastVariant::Info.border_color(), STATE_INFO);
+        assert_eq!(ToastVariant::Warning.border_color(), STATE_WARNING);
+        assert_eq!(ToastVariant::Error.border_color(), STATE_DANGER);
+        assert_eq!(ToastVariant::Celebration.border_color(), ACCENT_SECONDARY);
+    }
+
+    /// Every `ToastVariant` resolves to a unique border colour so a
+    /// careless rebinding (e.g. accidentally setting `Warning` to the
+    /// same hue as `Info`) fails loudly. Pure check — does not run a
+    /// Bevy app.
+    #[test]
+    fn toast_variant_border_colors_are_distinct() {
+        let colors = [
+            ToastVariant::Info.border_color(),
+            ToastVariant::Warning.border_color(),
+            ToastVariant::Error.border_color(),
+            ToastVariant::Celebration.border_color(),
+        ];
+        for i in 0..colors.len() {
+            for j in (i + 1)..colors.len() {
+                assert_ne!(
+                    format!("{:?}", colors[i]),
+                    format!("{:?}", colors[j]),
+                    "variants {i} and {j} resolved to the same border colour",
+                );
+            }
+        }
+    }
+
     #[test]
     fn anim_speed_instant_is_zero() {
         assert_eq!(anim_speed_to_secs(&AnimSpeed::Instant), 0.0);

solitaire_engine/src/assets/user_dir.rs

@@ -1,13 +1,12 @@
 //! Per-platform resolution of the user-themes directory.
 //!
 //! The path is determined exactly once and exposed via
-//! [`user_theme_dir`]. On desktop platforms it is derived from
+//! [`user_theme_dir`]. The base directory comes from
-//! `dirs::data_dir()` (matching the rest of the project's
+//! [`solitaire_data::data_dir`] (desktop: `dirs::data_dir()`;
-//! per-app-storage convention); on mobile it must be supplied by the
+//! Android: the hardcoded `/data/data/<package>/files` sandbox
-//! platform entry point via [`set_user_theme_dir`] before any code
+//! path). Mobile entry points may still override the path via
-//! that needs the path executes — there is deliberately no silent
+//! [`set_user_theme_dir`] when they need to point at a non-default
-//! fallback because mobile sandboxing makes any guess we'd hard-code
+//! location (e.g. tests, custom AssetManager wiring).
-//! wrong.
 //!
 //! # Why panic instead of returning Result?
 //!
@@ -35,17 +34,18 @@ const APP_DIR_NAME: &str = "solitaire_quest";
 /// Sub-folder under [`APP_DIR_NAME`] dedicated to user themes.
 const THEME_DIR_NAME: &str = "themes";
 
-/// Sets the user-themes directory at runtime — mobile-only API.
+/// Sets the user-themes directory at runtime — escape hatch for
+/// embedders or tests that need to override the platform default.
 ///
 /// Returns `Err` containing the rejected path if the override has
 /// already been set. The first caller wins and subsequent calls are
 /// silently a no-op-with-feedback so a mis-configured embedder can't
 /// flip the path mid-session.
 ///
-/// On desktop platforms this is functional but unnecessary —
+/// Mostly unnecessary now that [`solitaire_data::data_dir`] handles
-/// [`user_theme_dir`] derives the path from `dirs::data_dir` directly
+/// every supported target — the override is kept for tests and for
-/// and ignores the override. Setting it on desktop is harmless but
+/// embedders that want a non-default location (e.g. a sandboxed
-/// nearly always a sign of confusion.
+/// AssetManager root on a future iOS port).
 pub fn set_user_theme_dir(path: PathBuf) -> Result<(), PathBuf> {
     USER_THEME_DIR_OVERRIDE.set(path)
 }
@@ -55,16 +55,10 @@ pub fn set_user_theme_dir(path: PathBuf) -> Result<(), PathBuf> {
 ///
 /// # Panics
 ///
-/// Panics on:
+/// Panics if [`solitaire_data::data_dir`] returns `None`, which on
-///
+/// desktop indicates a broken `$HOME` / `$XDG_*` configuration.
-/// - Desktop, if `dirs::data_dir()` returns `None` (rare; usually
+/// Android always returns `Some`. The panic message names the
-///   indicates a broken `$HOME` or `$XDG_*` configuration).
+/// supported workaround ([`set_user_theme_dir`]).
-/// - Mobile, if no entry point has called [`set_user_theme_dir`] yet.
-/// - Any other target, where the embedder is required to supply the
-///   path manually.
-///
-/// The panic message names the missing piece so the failure is
-/// immediately actionable.
 pub fn user_theme_dir() -> PathBuf {
     if let Some(p) = USER_THEME_DIR_OVERRIDE.get() {
         return p.clone();
@@ -79,12 +73,15 @@ fn user_theme_dir_for(data_dir: PathBuf) -> PathBuf {
     data_dir.join(APP_DIR_NAME).join(THEME_DIR_NAME)
 }
 
-/// Per-target-os resolution of the platform's data dir. Split out so
+/// Per-target-os resolution of the platform's data dir. Delegates
-/// mobile branches can grow without disturbing desktop behaviour.
+/// to [`solitaire_data::data_dir`] which encapsulates the
+/// per-target shape (desktop: `dirs::data_dir()`; android: the
+/// hardcoded `/data/data/<package>/files` sandbox path). Panics
+/// only when the underlying resolver returns `None`, which on
+/// desktop indicates a broken `$HOME` / `$XDG_*` configuration —
+/// the panic message names the supported workaround.
 fn detected_platform_data_dir() -> PathBuf {
-    #[cfg(any(target_os = "linux", target_os = "macos", target_os = "windows"))]
+    solitaire_data::data_dir().unwrap_or_else(|| {
-    {
-        dirs::data_dir().unwrap_or_else(|| {
         panic!(
             "user_theme_dir(): platform data directory is unavailable. \
              On Linux check $XDG_DATA_HOME or $HOME; on macOS / Windows \
@@ -93,31 +90,6 @@ fn detected_platform_data_dir() -> PathBuf {
              set_user_theme_dir() before App::run()."
         )
     })
-    }
-
-    #[cfg(any(target_os = "android", target_os = "ios"))]
-    {
-        panic!(
-            "user_theme_dir(): mobile entry point must call \
-             solitaire_engine::assets::user_dir::set_user_theme_dir() \
-             before App::run() — there is no platform default."
-        )
-    }
-
-    #[cfg(not(any(
-        target_os = "linux",
-        target_os = "macos",
-        target_os = "windows",
-        target_os = "android",
-        target_os = "ios"
-    )))]
-    {
-        panic!(
-            "user_theme_dir(): unsupported platform; call \
-             solitaire_engine::assets::user_dir::set_user_theme_dir() \
-             from your entry point before App::run()."
-        )
-    }
 }
 
 #[cfg(test)]
@@ -140,14 +112,16 @@ mod tests {
         assert_eq!(dir, PathBuf::from("solitaire_quest/themes"));
     }
 
-    #[cfg(any(target_os = "linux", target_os = "macos", target_os = "windows"))]
     #[test]
     fn detected_data_dir_yields_a_path_with_a_parent() {
-        // On every supported desktop platform the OS reports a
+        // On every supported target the platform resolver
-        // user-writable data directory; the test machine already has
+        // (`solitaire_data::data_dir`) returns a usable directory:
-        // one for `dirs::data_dir()` to discover. We don't pin the
+        // desktop targets via `dirs::data_dir()` (the test machine
-        // exact value because it depends on the user's $HOME, but it
+        // already has a `$HOME` for it to discover), Android via
-        // must at least be a non-empty path with a parent component.
+        // the hardcoded `/data/data/<package>/files` sandbox path.
+        // We don't pin the exact value because it depends on the
+        // user's `$HOME` on desktop, but it must at least be a
+        // non-empty path with a parent component.
         let dir = detected_platform_data_dir();
         assert!(dir.parent().is_some(), "data dir {dir:?} should be absolute");
     }

solitaire_engine/src/card_plugin.rs

@@ -29,12 +29,13 @@ use crate::layout::{Layout, LayoutResource, LayoutSystem};
 use crate::pause_plugin::PausedResource;
 use crate::resources::{DragState, GameStateResource};
 use crate::settings_plugin::{SettingsChangedEvent, SettingsResource};
-use crate::table_plugin::PileMarker;
+use crate::table_plugin::{PileMarker, PILE_MARKER_DEFAULT_COLOUR};
 use crate::font_plugin::FontResource;
 use crate::ui_theme::{
     CARD_SHADOW_ALPHA_DRAG, CARD_SHADOW_ALPHA_IDLE, CARD_SHADOW_COLOR, CARD_SHADOW_LOCAL_Z,
     CARD_SHADOW_OFFSET_DRAG, CARD_SHADOW_OFFSET_IDLE, CARD_SHADOW_PADDING_DRAG,
-    CARD_SHADOW_PADDING_IDLE, STOCK_BADGE_BG, STOCK_BADGE_FG, TYPE_CAPTION, Z_STOCK_BADGE,
+    CARD_SHADOW_PADDING_IDLE, STOCK_BADGE_BG, STOCK_BADGE_FG, TEXT_PRIMARY, TYPE_CAPTION,
+    Z_STOCK_BADGE,
 };
 
 /// Fraction of card height used as vertical offset between face-up tableau cards.
@@ -925,12 +926,17 @@ fn update_drag_shadow(
             commands.entity(e).insert(Transform::from_translation(shadow_pos));
         }
         None => {
-            // Spawn a new shadow sprite.
+            // Spawn a new shadow sprite. Alpha tracks the per-card
+            // CARD_SHADOW_ALPHA_DRAG token so the Terminal palette's
+            // "no box-shadow" policy disables this stack shadow in
+            // lockstep with the per-card shadows. Re-enabling shadows
+            // is then a one-line change in `ui_theme`, not a hunt
+            // through plugin code.
             let e = commands
                 .spawn((
                     ShadowEntity,
                     Sprite {
-                        color: Color::srgba(0.0, 0.0, 0.0, 0.35),
+                        color: CARD_SHADOW_COLOR.with_alpha(CARD_SHADOW_ALPHA_DRAG),
                         custom_size: Some(Vec2::new(card_w + 8.0, card_h + 8.0)),
                         ..default()
                     },
@@ -1024,11 +1030,13 @@ fn tick_hint_highlight(
 // Task #46 — Right-click legal destination highlights
 // ---------------------------------------------------------------------------
 
-/// Color applied to a `PileMarker` sprite when it is a legal destination for
+/// Lime tint applied to a `PileMarker` sprite when it is a legal
-/// the right-clicked card.
+/// destination for the right-clicked card. Same RGB as the design-
-const RIGHT_CLICK_HIGHLIGHT_COLOUR: Color = Color::srgba(0.2, 0.8, 0.2, 0.6);
+/// system [`STATE_SUCCESS`] token at 60% alpha. Spelled as a literal
-/// Restored color for `PileMarker` sprites when the highlight is cleared.
+/// because `Alpha::with_alpha` is not yet a `const` trait method on
-const PILE_MARKER_DEFAULT_COLOUR: Color = Color::srgba(1.0, 1.0, 1.0, 0.08);
+/// stable; the tracking test below pins the RGB to `STATE_SUCCESS`
+/// so a palette swap can't drift the two apart silently.
+const RIGHT_CLICK_HIGHLIGHT_COLOUR: Color = Color::srgba(0.675, 0.761, 0.404, 0.6);
 
 /// Counts down `RightClickHighlightTimer` each frame and clears the highlight
 /// when the timer expires.
@@ -1238,11 +1246,16 @@ fn find_top_card_at(
 // ---------------------------------------------------------------------------
 
 /// Sprite colour applied to the stock `PileMarker` when the stock pile is empty,
-/// to signal to the player that there are no more cards to draw.
+/// to signal to the player that there are no more cards to draw. Pure white
+/// at 0.4 alpha — a deliberate brightness-boost over the default marker so
+/// the "empty" state is more visible, not less. Not derived from a palette
+/// token: this is a sprite tint, not chrome colour.
 const STOCK_EMPTY_DIM_COLOUR: Color = Color::srgba(1.0, 1.0, 1.0, 0.4);
 
-/// Sprite colour applied to the stock `PileMarker` when cards remain in stock.
+/// Sprite colour applied to the stock `PileMarker` when cards remain in
-const STOCK_NORMAL_COLOUR: Color = Color::srgba(1.0, 1.0, 1.0, 0.08);
+/// stock. Aliased to [`PILE_MARKER_DEFAULT_COLOUR`] so it tracks the rest
+/// of the engine's idle pile-marker tint automatically.
+const STOCK_NORMAL_COLOUR: Color = PILE_MARKER_DEFAULT_COLOUR;
 
 /// Shared logic for updating the stock pile marker's dim state and "↺" label.
 ///
@@ -1283,7 +1296,7 @@ fn apply_stock_empty_indicator<F: bevy::ecs::query::QueryFilter>(
                         StockEmptyLabel,
                         Text2d::new("↺"),
                         TextFont { font_size, ..default() },
-                        TextColor(Color::srgba(1.0, 1.0, 1.0, 0.7)),
+                        TextColor(TEXT_PRIMARY.with_alpha(0.7)),
                         Transform::from_xyz(0.0, 0.0, 0.1),
                     ));
                 });
@@ -2329,9 +2342,15 @@ mod tests {
 
         assert_ne!(idle_offset, drag_offset, "drag offset must differ from idle");
         assert_ne!(idle_padding, drag_padding, "drag padding must differ from idle");
+        // Under the Terminal design system both alphas are pinned to 0
+        // (depth comes from 1px borders + tonal layering, no `box-shadow`).
+        // The invariant we still enforce is "drag never weaker than idle"
+        // — so an accidental swap of the two constants fails loudly,
+        // and a future palette that re-enables shadows still has to keep
+        // the lift cue stronger than the rest state.
         assert!(
-            drag_alpha > idle_alpha,
+            drag_alpha >= idle_alpha,
-            "drag alpha must be stronger than idle (got drag={drag_alpha}, idle={idle_alpha})"
+            "drag alpha must not be weaker than idle (got drag={drag_alpha}, idle={idle_alpha})"
         );
         // Drag offset magnitude should be larger than idle so the parallax
         // reads as "lifted".
@@ -2700,4 +2719,20 @@ mod tests {
             "after a theme apply the theme_back slot must hold the theme's back handle",
         );
     }
+
+    /// `RIGHT_CLICK_HIGHLIGHT_COLOUR` is spelled as a literal because
+    /// `Alpha::with_alpha` is not a `const` trait method on stable.
+    /// This test pins its RGB to the design-system `STATE_SUCCESS`
+    /// token so a future palette swap that updates the token but
+    /// forgets the right-click highlight fails loudly here.
+    #[test]
+    fn right_click_highlight_rgb_tracks_state_success_token() {
+        use crate::ui_theme::STATE_SUCCESS;
+        let highlight = RIGHT_CLICK_HIGHLIGHT_COLOUR.to_srgba();
+        let success = STATE_SUCCESS.to_srgba();
+        assert!((highlight.red - success.red).abs() < 1e-6);
+        assert!((highlight.green - success.green).abs() < 1e-6);
+        assert!((highlight.blue - success.blue).abs() < 1e-6);
+        assert!((highlight.alpha - 0.6).abs() < 1e-6);
+    }
 }

solitaire_engine/src/cursor_plugin.rs

@@ -41,17 +41,28 @@ use solitaire_core::rules::{can_place_on_foundation, can_place_on_tableau};
 use crate::card_plugin::{RightClickHighlight, TABLEAU_FAN_FRAC};
 use crate::layout::{Layout, LayoutResource};
 use crate::resources::{DragState, GameStateResource};
-use crate::table_plugin::PileMarker;
+use crate::table_plugin::{PileMarker, PILE_MARKER_DEFAULT_COLOUR};
 use crate::ui_theme::{
     DROP_TARGET_FILL, DROP_TARGET_OUTLINE, DROP_TARGET_OUTLINE_PX, Z_DROP_OVERLAY,
 };
 
-/// Semi-transparent white that `table_plugin` uses for idle pile markers.
+/// Idle pile-marker tint — re-exported from `table_plugin` so the
-/// Kept in sync with the `marker_colour` constant there.
+/// "valid drop" toggle in this plugin and the marker spawn in
-const MARKER_DEFAULT: Color = Color::srgba(1.0, 1.0, 1.0, 0.08);
+/// `table_plugin` cannot drift apart. Was previously a duplicated
+/// literal kept in sync via doc comment.
+const MARKER_DEFAULT: Color = PILE_MARKER_DEFAULT_COLOUR;
 
-/// Green tint applied to pile markers that are valid drop targets during drag.
+/// Lime tint applied to pile markers that are valid drop targets during
-const MARKER_VALID: Color = Color::srgba(0.15, 0.85, 0.25, 0.55);
+/// a drag. Same RGB as the design-system [`STATE_SUCCESS`] token at 55%
+/// alpha, so the in-game "this is a legal target" colour stays
+/// consistent with foundation-completion flourishes and other
+/// valid-move signals. Spelled as a literal because `Alpha::with_alpha`
+/// is not yet a `const` trait method on stable; the tracking test
+/// below pins the RGB to `STATE_SUCCESS` so a palette swap can't drift
+/// the two apart silently. Distinct from [`DROP_TARGET_FILL`] (10%
+/// alpha) because the marker sprite is thin and would otherwise wash
+/// out at a similar opacity.
+const MARKER_VALID: Color = Color::srgba(0.675, 0.761, 0.404, 0.55);
 
 /// Marker component on a parent entity that owns one drop-target overlay
 /// (a translucent fill plus four outline edges as children). The wrapped
@@ -524,6 +535,22 @@ mod tests {
         );
     }
 
+    #[test]
+    fn marker_valid_rgb_tracks_state_success_token() {
+        // `MARKER_VALID` is spelled as a literal because
+        // `Alpha::with_alpha` is not a `const` trait method on stable.
+        // This test pins its RGB to `STATE_SUCCESS` so a future
+        // palette swap that updates the token but forgets the marker
+        // fails loudly here.
+        use crate::ui_theme::STATE_SUCCESS;
+        let valid = MARKER_VALID.to_srgba();
+        let success = STATE_SUCCESS.to_srgba();
+        assert!((valid.red - success.red).abs() < 1e-6);
+        assert!((valid.green - success.green).abs() < 1e-6);
+        assert!((valid.blue - success.blue).abs() < 1e-6);
+        assert!((valid.alpha - 0.55).abs() < 1e-6);
+    }
+
     // -----------------------------------------------------------------------
     // pick_cursor_icon priority-order tests
     // -----------------------------------------------------------------------

solitaire_engine/src/diagnostics_hud.rs

@@ -0,0 +1,164 @@
+//! Optional on-screen FPS / frame-time overlay.
+//!
+//! Wraps Bevy's [`FrameTimeDiagnosticsPlugin`] and renders a tiny
+//! corner readout that the developer (or a curious player) can toggle
+//! with `F3`. Hidden by default — production builds ship the plugin
+//! but the overlay starts invisible, so the production HUD is never
+//! cluttered unless explicitly summoned.
+//!
+//! Why this exists: with an Android port on the roadmap, "feels
+//! slow" became a real risk to plan around. A togglable FPS / frame-
+//! time pair gives us a numeric baseline we can quote across desktop
+//! and mobile, instead of optimising on vibes.
+//!
+//! ## Display contract
+//!
+//! When visible, the overlay reads `"FPS NN \u{2022} M.MM ms"` in a
+//! small monospaced cell, anchored top-right. Both numbers are the
+//! `smoothed()` value (Bevy's exponential moving average) — peak
+//! and worst-case readings would jitter the text every frame, which
+//! is harder to glance at than a smoothed reading.
+//!
+//! ## Hotkey scope
+//!
+//! `F3` is a global, gameplay-blockable toggle: the system reads
+//! `ButtonInput<KeyCode>` directly and ignores the rest of the modal
+//! / pause stack. The overlay is informational and shouldn't depend
+//! on game state.
+
+use bevy::diagnostic::{DiagnosticsStore, FrameTimeDiagnosticsPlugin};
+use bevy::prelude::*;
+
+use crate::font_plugin::FontResource;
+use crate::ui_theme::Z_SPLASH;
+
+/// Z-index for the diagnostics HUD — above every modal / toast /
+/// splash layer so a developer can always see the readout, no matter
+/// what overlay is up.
+const Z_DIAGNOSTICS_HUD: i32 = Z_SPLASH + 100;
+
+/// Width-stable font size for the readout. Hand-tuned literal — the
+/// HUD is a developer affordance and uses its own sizing rather than
+/// borrowing a typography token whose meaning may drift.
+const DIAGNOSTICS_FONT_SIZE: f32 = 12.0;
+
+/// Background alpha for the readout cell. Translucent so the HUD
+/// doesn't fully obscure whatever's behind it but stays legible.
+const DIAGNOSTICS_BG_ALPHA: f32 = 0.7;
+
+/// Wires the FPS / frame-time HUD overlay.
+///
+/// Adds [`FrameTimeDiagnosticsPlugin`] (no-op if already added — the
+/// plugin's `Plugin::build` is idempotent on duplicate registration
+/// in our codebase since no other site adds it). Spawns the HUD
+/// hidden, registers the toggle handler, and wires the per-frame
+/// text refresh.
+pub struct DiagnosticsHudPlugin;
+
+impl Plugin for DiagnosticsHudPlugin {
+    fn build(&self, app: &mut App) {
+        app.add_plugins(FrameTimeDiagnosticsPlugin::default())
+            .init_resource::<DiagnosticsHudVisible>()
+            .add_systems(Startup, spawn_diagnostics_hud)
+            .add_systems(
+                Update,
+                (toggle_diagnostics_hud, update_diagnostics_hud).chain(),
+            );
+    }
+}
+
+/// Tracks whether the overlay is currently visible. Flipped by the
+/// `F3` toggle; defaults to hidden so production launches start clean.
+#[derive(Resource, Debug, Default)]
+struct DiagnosticsHudVisible(bool);
+
+/// Marker on the overlay's root Node — used to flip `Visibility`.
+#[derive(Component, Debug)]
+struct DiagnosticsHudRoot;
+
+/// Marker on the readout `Text` node — used by the per-frame refresh
+/// system to find the right text to overwrite.
+#[derive(Component, Debug)]
+struct DiagnosticsHudText;
+
+/// Spawns the (initially-hidden) overlay at startup. Anchored
+/// top-right with absolute positioning so it never participates in
+/// the rest of the UI flex tree.
+fn spawn_diagnostics_hud(mut commands: Commands, font_res: Option<Res<FontResource>>) {
+    let font_handle = font_res.map(|f| f.0.clone()).unwrap_or_default();
+    let bg = Color::srgba(0.0, 0.0, 0.0, DIAGNOSTICS_BG_ALPHA);
+
+    commands
+        .spawn((
+            DiagnosticsHudRoot,
+            Node {
+                position_type: PositionType::Absolute,
+                top: Val::Px(8.0),
+                right: Val::Px(8.0),
+                padding: UiRect::axes(Val::Px(8.0), Val::Px(4.0)),
+                ..default()
+            },
+            BackgroundColor(bg),
+            Visibility::Hidden,
+            GlobalZIndex(Z_DIAGNOSTICS_HUD),
+        ))
+        .with_children(|parent| {
+            parent.spawn((
+                DiagnosticsHudText,
+                Text::new("FPS \u{2014}"),
+                TextFont {
+                    font: font_handle,
+                    font_size: DIAGNOSTICS_FONT_SIZE,
+                    ..default()
+                },
+                TextColor(Color::WHITE),
+            ));
+        });
+}
+
+/// `F3` flips the visible flag and the overlay's `Visibility`. Reads
+/// the keyboard input directly so it isn't gated by pause / modal
+/// state — diagnostics should always be reachable.
+fn toggle_diagnostics_hud(
+    keys: Res<ButtonInput<KeyCode>>,
+    mut visible: ResMut<DiagnosticsHudVisible>,
+    mut roots: Query<&mut Visibility, With<DiagnosticsHudRoot>>,
+) {
+    if !keys.just_pressed(KeyCode::F3) {
+        return;
+    }
+    visible.0 = !visible.0;
+    let target = if visible.0 {
+        Visibility::Visible
+    } else {
+        Visibility::Hidden
+    };
+    for mut v in &mut roots {
+        *v = target;
+    }
+}
+
+/// Reads the smoothed FPS + frame-time diagnostics each frame and
+/// rewrites the readout text. Skipped while the overlay is hidden so
+/// we don't pay the diagnostic-store lookup or the text mutation
+/// when nobody's looking.
+fn update_diagnostics_hud(
+    diagnostics: Res<DiagnosticsStore>,
+    visible: Res<DiagnosticsHudVisible>,
+    mut texts: Query<&mut Text, With<DiagnosticsHudText>>,
+) {
+    if !visible.0 {
+        return;
+    }
+    let fps = diagnostics
+        .get(&FrameTimeDiagnosticsPlugin::FPS)
+        .and_then(|d| d.smoothed())
+        .unwrap_or(0.0);
+    let frame_time_ms = diagnostics
+        .get(&FrameTimeDiagnosticsPlugin::FRAME_TIME)
+        .and_then(|d| d.smoothed())
+        .unwrap_or(0.0);
+    for mut text in &mut texts {
+        **text = format!("FPS {fps:.0} \u{2022} {frame_time_ms:.2} ms");
+    }
+}

solitaire_engine/src/help_plugin.rs

@@ -184,6 +184,8 @@ const CONTROL_SECTIONS: &[ControlSection] = &[
     ControlSection {
         title: "Overlays",
         rows: &[
+            ControlRow { keys: "M", description: "Mode launcher (Home)" },
+            ControlRow { keys: "P", description: "Profile" },
             ControlRow { keys: "S", description: "Stats & progression" },
             ControlRow { keys: "A", description: "Achievements" },
             ControlRow { keys: "L", description: "Leaderboard" },
@@ -192,6 +194,7 @@ const CONTROL_SECTIONS: &[ControlSection] = &[
             ControlRow { keys: "F11", description: "Toggle fullscreen" },
             ControlRow { keys: "Esc", description: "Pause / resume" },
             ControlRow { keys: "[ / ]", description: "SFX volume down / up" },
+            ControlRow { keys: "Enter", description: "Play Again (on the Win Summary)" },
         ],
     },
 ];

solitaire_engine/src/input_plugin.rs

@@ -35,7 +35,7 @@ use crate::card_plugin::{
     CardEntity, HintHighlight, HintHighlightTimer, STACK_FAN_FRAC, TABLEAU_FACEDOWN_FAN_FRAC,
     TABLEAU_FAN_FRAC,
 };
-use crate::ui_theme::MOTION_DRAG_REJECT_SECS;
+use crate::ui_theme::{MOTION_DRAG_REJECT_SECS, STATE_WARNING};
 use solitaire_core::game_state::DrawMode;
 use crate::challenge_plugin::CHALLENGE_UNLOCK_LEVEL;
 use crate::events::{
@@ -335,8 +335,11 @@ pub fn emit_hint_visuals(
         for (entity, card_entity, mut sprite) in card_entities.iter_mut() {
             if card_entity.card_id == card_id {
                 // Tint the card gold without replacing the Sprite (which would
-                // discard the image handle set by CardImageSet).
+                // discard the image handle set by CardImageSet). Uses the
-                sprite.color = Color::srgba(1.0, 1.0, 0.4, 1.0);
+                // design-system `STATE_WARNING` token so the source-card
+                // tint matches the destination pile highlight, both of
+                // which signal "look here" for the hint.
+                sprite.color = STATE_WARNING;
                 commands.entity(entity)
                     .insert(HintHighlight { remaining: 2.0 })
                     .insert(HintHighlightTimer(2.0));

solitaire_engine/src/lib.rs

@@ -12,6 +12,7 @@ pub mod feedback_anim_plugin;
 pub mod challenge_plugin;
 pub mod cursor_plugin;
 pub mod daily_challenge_plugin;
+pub mod diagnostics_hud;
 pub mod events;
 pub mod game_plugin;
 pub mod help_plugin;
@@ -85,6 +86,7 @@ pub use card_plugin::{
 };
 pub use font_plugin::{FontPlugin, FontResource};
 pub use cursor_plugin::CursorPlugin;
+pub use diagnostics_hud::DiagnosticsHudPlugin;
 pub use events::{
     AchievementUnlockedEvent, CardFaceRevealedEvent, CardFlippedEvent, DrawRequestEvent,
     ForfeitEvent, ForfeitRequestEvent, FoundationCompletedEvent, GameWonEvent, HelpRequestEvent,

solitaire_engine/src/replay_overlay.rs

@@ -208,8 +208,9 @@ fn spawn_overlay(
             GlobalZIndex(Z_REPLAY_OVERLAY),
         ))
         .with_children(|banner| {
-            // Left: "Replay" label in the loud yellow accent so it reads
+            // Left: "Replay" label in the cyan primary accent
-            // unmistakably as a non-gameplay surface.
+            // (`ACCENT_PRIMARY`) so it reads unmistakably as a
+            // non-gameplay surface.
             banner.spawn((
                 ReplayOverlayBannerText,
                 Text::new(banner_label),
@@ -236,7 +237,7 @@ fn spawn_overlay(
 
             // Right: Stop button. Tertiary variant — the action is
             // available but not the loudest element in the banner; the
-            // "Replay" yellow accent owns that slot. `spawn_modal_button`
+            // "Replay" cyan accent owns that slot. `spawn_modal_button`
             // gives us hover / press paint and focus rings for free via
             // the existing `UiModalPlugin` paint system.
             banner

solitaire_engine/src/selection_plugin.rs

@@ -48,6 +48,7 @@ use crate::input_plugin::{best_destination, best_tableau_destination_for_stack};
 use crate::layout::LayoutResource;
 use crate::pause_plugin::PausedResource;
 use crate::resources::{DragState, GameStateResource};
+use crate::ui_theme::{ACCENT_PRIMARY, STATE_SUCCESS, STATE_WARNING};
 
 // ---------------------------------------------------------------------------
 // Public types
@@ -660,14 +661,18 @@ fn update_selection_highlight(
     };
     let card_size = layout.0.card_size;
 
-    // Choose colours per mode: cyan in source-pick, gold while lifted.
+    // Highlight tints follow the Terminal palette's semantic state
+    // tokens: cyan focus/selection while picking the source, gold
+    // attention/commitment once the cards are lifted, lime valid-move
+    // tint on the destination. Alphas are kept non-zero so the card
+    // face beneath remains readable through the wash.
     let lifted = kbd_drag.is_lifted();
     let source_color = if lifted {
-        Color::srgba(1.0, 0.84, 0.0, 0.6)
+        STATE_WARNING.with_alpha(0.6)
     } else {
-        Color::srgba(0.0, 1.0, 1.0, 0.5)
+        ACCENT_PRIMARY.with_alpha(0.5)
     };
-    let dest_color = Color::srgba(0.0, 1.0, 0.4, 0.6);
+    let dest_color = STATE_SUCCESS.with_alpha(0.6);
 
     // Resolve the source pile from KeyboardDragState (when lifted) or
     // SelectionState (otherwise). Lifted takes precedence so the gold

solitaire_engine/src/settings_plugin.rs

@@ -144,6 +144,13 @@ struct ReplayMoveIntervalText;
 #[derive(Component, Debug)]
 struct WinnableDealsOnlyText;
 
+/// Marks the `Text` node showing the current "Smart window size"
+/// state ("ON" / "OFF") in the Gameplay section. The flag is stored
+/// negatively in `Settings::disable_smart_default_size`, so the
+/// label inverts: "ON" = smart sizing enabled (the default).
+#[derive(Component, Debug)]
+struct SmartDefaultSizeText;
+
 /// Marks the scrollable inner card so the mouse-wheel system can target it.
 #[derive(Component, Debug)]
 struct SettingsPanelScrollable;
@@ -199,6 +206,13 @@ enum SettingsButton {
     /// [`solitaire_core::solver::try_solve`] until one is provably
     /// winnable (or the retry cap is hit). Off by default.
     ToggleWinnableDealsOnly,
+    /// Toggle the inverse of [`Settings::disable_smart_default_size`].
+    /// When the visible label reads "ON", the launch-time window
+    /// sizer scales the window to ~70 % of the primary monitor on a
+    /// fresh install; "OFF" pins the literal 1280×800 baseline. The
+    /// flag only affects launches without saved geometry — the
+    /// player's last window size always wins.
+    ToggleSmartDefaultSize,
     SyncNow,
     Done,
     /// Select a specific card-back by index from the picker row.
@@ -236,6 +250,8 @@ impl SettingsButton {
             // sits between TimeBonusUp (48) and the Cosmetic section.
             SettingsButton::ReplayMoveIntervalDown => 49,
             SettingsButton::ReplayMoveIntervalUp => 49,
+            // Smart-default-size toggle — sits at the end of Gameplay.
+            SettingsButton::ToggleSmartDefaultSize => 50,
             // Cosmetic section
             SettingsButton::ToggleTheme => 55,
             SettingsButton::ToggleColorBlind => 60,
@@ -330,6 +346,7 @@ impl Plugin for SettingsPlugin {
                     update_time_bonus_multiplier_text,
                     update_replay_move_interval_text,
                     update_winnable_deals_only_text,
+                    update_smart_default_size_text,
                     attach_focusable_to_settings_buttons,
                     scroll_focus_into_view,
                 ),
@@ -600,6 +617,21 @@ fn update_winnable_deals_only_text(
     }
 }
 
+/// Refreshes the live "Smart window size" toggle value whenever
+/// `SettingsResource` changes. The flag is stored negatively as
+/// `disable_smart_default_size`, so the label inverts.
+fn update_smart_default_size_text(
+    settings: Res<SettingsResource>,
+    mut text_nodes: Query<&mut Text, With<SmartDefaultSizeText>>,
+) {
+    if !settings.is_changed() {
+        return;
+    }
+    for mut text in &mut text_nodes {
+        **text = smart_default_size_label(!settings.0.disable_smart_default_size);
+    }
+}
+
 /// Refreshes the live tooltip-delay value in the Gameplay section
 /// whenever `SettingsResource` changes (slider buttons, hand-edited
 /// settings.json reload, etc.).
@@ -854,6 +886,17 @@ fn handle_settings_buttons(
                 // The Text node is refreshed by `update_winnable_deals_only_text`
                 // on the next frame via `settings.is_changed()`.
             }
+            SettingsButton::ToggleSmartDefaultSize => {
+                settings.0.disable_smart_default_size =
+                    !settings.0.disable_smart_default_size;
+                persist(&path, &settings.0);
+                changed.write(SettingsChangedEvent(settings.0.clone()));
+                // The Text node is refreshed by
+                // `update_smart_default_size_text` next frame. The
+                // sizer system is gated only at startup, so flipping
+                // this mid-session takes effect on the next launch —
+                // documented on the field in `solitaire_data::Settings`.
+            }
             SettingsButton::SelectCardBack(idx) => {
                 settings.0.selected_card_back = *idx;
                 persist(&path, &settings.0);
@@ -915,6 +958,14 @@ fn winnable_deals_only_label(enabled: bool) -> String {
     if enabled { "ON".into() } else { "OFF".into() }
 }
 
+/// Display string for the "Smart window size" toggle. The argument
+/// is the *enabled* state (i.e. the inverse of the underlying
+/// `disable_smart_default_size` field) so reading the label gives
+/// the player intuitive ON/OFF semantics.
+fn smart_default_size_label(enabled: bool) -> String {
+    if enabled { "ON".into() } else { "OFF".into() }
+}
+
 /// Formats the tooltip-hover delay for display in the Settings panel.
 /// `0.0` reads as `"Instant"` so the zero-delay case has a name; any
 /// other value prints as `"{n:.1} s"` (e.g. `"0.5 s"`, `"1.2 s"`).
@@ -1303,6 +1354,17 @@ fn spawn_settings_panel(
                 settings.replay_move_interval_secs,
                 font_res,
             );
+            toggle_row(
+                body,
+                "Smart window size",
+                SmartDefaultSizeText,
+                smart_default_size_label(!settings.disable_smart_default_size),
+                SettingsButton::ToggleSmartDefaultSize,
+                "When ON, fresh launches resize the window to ~70 % of the \
+                 monitor. OFF pins the 1280\u{00D7}800 baseline. Saved \
+                 window size always wins.",
+                font_res,
+            );
 
             // --- Cosmetic ---
             section_label(body, "Cosmetic", font_res);

solitaire_engine/src/splash_plugin.rs

@@ -101,6 +101,15 @@ struct SplashTitle;
 #[derive(Component, Debug)]
 struct SplashSubtitle;
 
+/// Marker on the cyan "terminal cursor" block (`▌`) painted above the
+/// title. Visual signature of the Terminal design system per
+/// `docs/ui-mockups/design-system.md` — the same `#6fc2ef` block
+/// appears on the card-back theme, on the splash, and (per spec) is
+/// the project's cursor motif. Faded together with the rest of the
+/// splash so the dissolve still reads as one layer.
+#[derive(Component, Debug)]
+struct SplashCursor;
+
 // ---------------------------------------------------------------------------
 // Systems
 // ---------------------------------------------------------------------------
@@ -129,6 +138,14 @@ fn spawn_splash(
     }
 
     let font_handle = font_res.map(|f| f.0.clone()).unwrap_or_default();
+    let cursor_font = TextFont {
+        font: font_handle.clone(),
+        // Larger than TYPE_DISPLAY so the cursor block reads as the
+        // signature element above the wordmark. Hand-tuned literal —
+        // a one-off display character outside the regular text scale.
+        font_size: 96.0,
+        ..default()
+    };
     let title_font = TextFont {
         font: font_handle.clone(),
         font_size: TYPE_DISPLAY,
@@ -171,6 +188,12 @@ fn spawn_splash(
             GlobalZIndex(Z_SPLASH),
         ))
         .with_children(|root| {
+            root.spawn((
+                SplashCursor,
+                Text::new("\u{258C}"), // ▌ — the Terminal cursor block.
+                cursor_font,
+                TextColor(initial_title),
+            ));
             root.spawn((
                 SplashTitle,
                 Text::new("Solitaire Quest"),
@@ -219,12 +242,23 @@ fn splash_alpha(age: Duration) -> Option<f32> {
 /// scrim + text alpha, despawning the splash once the timeline
 /// finishes. Despawns with descendants so the title and subtitle leave
 /// the world together.
+#[allow(clippy::type_complexity)]
 fn advance_splash(
     mut commands: Commands,
     time: Res<Time>,
     mut roots: Query<(Entity, &mut SplashAge, &mut BackgroundColor, &Children), With<SplashRoot>>,
-    mut titles: Query<&mut TextColor, (With<SplashTitle>, Without<SplashSubtitle>)>,
+    mut titles: Query<
-    mut subtitles: Query<&mut TextColor, (With<SplashSubtitle>, Without<SplashTitle>)>,
+        &mut TextColor,
+        (With<SplashTitle>, Without<SplashSubtitle>, Without<SplashCursor>),
+    >,
+    mut subtitles: Query<
+        &mut TextColor,
+        (With<SplashSubtitle>, Without<SplashTitle>, Without<SplashCursor>),
+    >,
+    mut cursors: Query<
+        &mut TextColor,
+        (With<SplashCursor>, Without<SplashTitle>, Without<SplashSubtitle>),
+    >,
 ) {
     for (entity, mut age, mut bg, children) in &mut roots {
         age.0 = age.0.saturating_add(time.delta());
@@ -239,9 +273,16 @@ fn advance_splash(
         bg.0 = scrim;
 
         // Walk the splash root's direct children for the title /
-        // subtitle markers and update their alpha. The hierarchy is
+        // subtitle / cursor markers and update their alpha. The
-        // shallow (root → 2 text children) so a small loop is fine.
+        // hierarchy is shallow (root → 3 text children) so a small
+        // loop is fine.
         for child in children.iter() {
+            if let Ok(mut color) = cursors.get_mut(child) {
+                let mut c = ACCENT_PRIMARY;
+                c.set_alpha(alpha);
+                color.0 = c;
+                continue;
+            }
             if let Ok(mut color) = titles.get_mut(child) {
                 let mut c = ACCENT_PRIMARY;
                 c.set_alpha(alpha);

solitaire_engine/src/stats_plugin.rs

@@ -317,6 +317,15 @@ fn handle_copy_share_link_button(
         ));
         return;
     };
+
+    // Desktop: `arboard` writes the URL to the OS clipboard.
+    // Android: `arboard` has no platform backend (would fail to
+    // compile, so the dependency is target-gated in
+    // solitaire_engine/Cargo.toml). The button still spawns and
+    // resolves to a meaningful toast instead — when we wire the
+    // Android Phase, this becomes a JNI call into ClipboardManager.
+    #[cfg(not(target_os = "android"))]
+    {
         match arboard::Clipboard::new() {
             Ok(mut cb) => match cb.set_text(url.clone()) {
                 Ok(()) => {
@@ -336,6 +345,13 @@ fn handle_copy_share_link_button(
                 ));
             }
         }
+    }
+    #[cfg(target_os = "android")]
+    {
+        toast.write(InfoToastEvent(format!(
+            "Share link: {url}"
+        )));
+    }
 }
 
 fn handle_watch_replay_button(
@@ -847,8 +863,23 @@ fn spawn_stats_screen(
             // Surfaces the most recent winning game so the player can spot
             // whether their last victory has been recorded. The Watch
             // Replay action below is what the player clicks to revisit it.
+            //
+            // When the displayed replay carries a `share_url` (uploaded
+            // to a sync server, persisted by v0.19.0's share-link
+            // contract), append a "Shareable" badge so the player can
+            // tell at a glance whether the Copy share link button below
+            // will produce a URL — without it the button surfaces a
+            // toast explaining why nothing was copied, which is more
+            // friction than necessary when a quick visual cue suffices.
             let replay_caption = match latest_replay {
-                Some(r) => format!("Latest win: {}", format_replay_caption(r)),
+                Some(r) => {
+                    let base = format!("Latest win: {}", format_replay_caption(r));
+                    if r.share_url.is_some() {
+                        format!("{base} \u{2022} Shareable")
+                    } else {
+                        base
+                    }
+                }
                 None => "No replay recorded yet \u{2014} win a game first.".to_string(),
             };
             body.spawn((

solitaire_engine/src/sync_plugin.rs

@@ -502,10 +502,28 @@ mod tests {
     #[test]
     fn pull_failure_sets_error_status() {
         let mut app = headless_app_with(FailingProvider);
-        // Pump frames until the task resolves (it's synchronous under
+        // Wall-clock-bounded loop instead of a fixed 5-update budget.
-        // AsyncComputeTaskPool in test mode, so a few updates suffice).
+        // Under heavy parallel cargo-test load the AsyncComputeTaskPool
-        for _ in 0..5 {
+        // can be starved long enough that 5 updates aren't sufficient
+        // for the failing pull to surface. Pumping until either the
+        // status flips to `Error` or a 5-second deadline elapses
+        // mirrors the auto-save flake fix and turns this test from
+        // "pass on a fast machine" into "pass on any machine that
+        // makes meaningful progress".
+        let deadline =
+            std::time::Instant::now() + std::time::Duration::from_secs(5);
+        loop {
             app.update();
+            if matches!(
+                app.world().resource::<SyncStatusResource>().0,
+                SyncStatus::Error(_)
+            ) {
+                break;
+            }
+            if std::time::Instant::now() >= deadline {
+                break;
+            }
+            std::thread::yield_now();
         }
         let status = &app.world().resource::<SyncStatusResource>().0;
         assert!(

solitaire_engine/src/table_plugin.rs

@@ -14,9 +14,21 @@ use crate::layout::{compute_layout, Layout, LayoutResource, LayoutSystem};
 #[cfg(test)]
 use crate::layout::TABLE_COLOUR;
 use crate::settings_plugin::{SettingsChangedEvent, SettingsResource};
+use crate::ui_theme::TEXT_PRIMARY;
 #[cfg(test)]
 use solitaire_data::Theme;
 
+/// Default tint applied to every empty-pile marker sprite. Pure white
+/// at 8% alpha — soft enough that the marker reads as a "hint of a
+/// slot" rather than a panel, but visible against every felt
+/// background.
+///
+/// Re-exported as the source of truth for `cursor_plugin::MARKER_DEFAULT`,
+/// which used to duplicate the literal alongside a "kept in sync" doc
+/// comment. Pulling both call sites through this const makes drift a
+/// compile error instead of a stale comment.
+pub const PILE_MARKER_DEFAULT_COLOUR: Color = Color::srgba(1.0, 1.0, 1.0, 0.08);
+
 /// Holds pre-loaded [`Handle<Image>`]s for the 5 selectable table backgrounds.
 ///
 /// Loaded once at startup by [`load_background_images`].  Index 0 is the
@@ -218,7 +230,7 @@ pub fn suit_symbol(suit: &Suit) -> &'static str {
 }
 
 fn spawn_pile_markers(commands: &mut Commands, layout: &Layout) {
-    let marker_colour = Color::srgba(1.0, 1.0, 1.0, 0.08);
+    let marker_colour = PILE_MARKER_DEFAULT_COLOUR;
     let marker_size = layout.card_size;
     let font_size = layout.card_size.x * 0.28;
 
@@ -254,7 +266,7 @@ fn spawn_pile_markers(commands: &mut Commands, layout: &Layout) {
                 b.spawn((
                     Text2d::new("K"),
                     TextFont { font_size, ..default() },
-                    TextColor(Color::srgba(1.0, 1.0, 1.0, 0.35)),
+                    TextColor(TEXT_PRIMARY.with_alpha(0.35)),
                     Transform::from_xyz(0.0, 0.0, 0.1),
                 ));
             });
@@ -308,9 +320,14 @@ fn on_window_resized(
 // Task #6 — Hint pile-marker highlight
 // ---------------------------------------------------------------------------
 
-/// Gold tint applied to a `PileMarker` sprite when it is the current hint
+/// Gold tint applied to a `PileMarker` sprite when it is the current
-/// destination.
+/// hint destination. Same RGB as the design-system [`STATE_WARNING`]
-const HINT_PILE_HIGHLIGHT_COLOUR: Color = Color::srgb(1.0, 0.85, 0.1);
+/// token (`#ddb26f`) so the in-game "look here" colour is the same hue
+/// as every other warning/attention signal in the UI. Spelled as a
+/// literal because `Alpha::with_alpha` is not yet a `const` trait
+/// method on stable; the tracking test below pins the RGB to
+/// `STATE_WARNING` so a future palette swap can't drift the two apart.
+const HINT_PILE_HIGHLIGHT_COLOUR: Color = Color::srgb(0.867, 0.698, 0.435);
 
 /// Listens for `HintVisualEvent` and tints the matching `PileMarker` entity
 /// gold for 2 s, storing the original colour in `HintPileHighlight` so it can
@@ -480,19 +497,33 @@ mod tests {
     /// default pile marker colour so the player can see which pile is highlighted.
     #[test]
     fn hint_pile_highlight_colour_is_distinct_from_default() {
-        let default = Color::srgba(1.0, 1.0, 1.0, 0.08); // PILE_MARKER_DEFAULT_COLOUR
         assert_ne!(
-            HINT_PILE_HIGHLIGHT_COLOUR, default,
+            HINT_PILE_HIGHLIGHT_COLOUR, PILE_MARKER_DEFAULT_COLOUR,
             "HINT_PILE_HIGHLIGHT_COLOUR must differ from the default pile marker colour"
         );
     }
 
+    /// `HINT_PILE_HIGHLIGHT_COLOUR` is spelled as a literal because
+    /// `Alpha::with_alpha` is not a `const` trait method on stable.
+    /// This test pins its RGB to the design-system `STATE_WARNING`
+    /// token so a future palette swap that updates the token but
+    /// forgets the hint highlight fails loudly here.
+    #[test]
+    fn hint_pile_highlight_rgb_tracks_state_warning_token() {
+        use crate::ui_theme::STATE_WARNING;
+        let hint = HINT_PILE_HIGHLIGHT_COLOUR.to_srgba();
+        let warning = STATE_WARNING.to_srgba();
+        assert!((hint.red - warning.red).abs() < 1e-6);
+        assert!((hint.green - warning.green).abs() < 1e-6);
+        assert!((hint.blue - warning.blue).abs() < 1e-6);
+    }
+
     /// A freshly-created HintPileHighlight has a positive timer countdown.
     #[test]
     fn hint_pile_highlight_timer_starts_positive() {
         let h = HintPileHighlight {
             timer: 2.0,
-            original_color: Color::srgba(1.0, 1.0, 1.0, 0.08),
+            original_color: PILE_MARKER_DEFAULT_COLOUR,
         };
         assert!(
             h.timer > 0.0,
@@ -529,17 +560,22 @@ mod tests {
         );
     }
 
-    /// The gold hint colour must have a strong yellow component (r ≥ 0.9, g ≥ 0.8,
+    /// The hint colour must read as "gold-ish" — red dominant, green
-    /// b ≤ 0.3) to be clearly visible as a "destination" indicator.
+    /// close behind, blue noticeably lower — so a player intuitively
+    /// associates the highlight with attention/warning. Bounds are
+    /// loose enough to accommodate the Terminal palette's muted gold
+    /// (`STATE_WARNING`, `#ddb26f`) while still rejecting a stray
+    /// red, green, or neutral grey if someone refactors badly.
+    /// Exact-RGB tracking lives in
+    /// `hint_pile_highlight_rgb_tracks_state_warning_token`.
     #[test]
     fn hint_pile_highlight_colour_is_gold() {
-        // Extract linear components.  srgb(1.0, 0.85, 0.1) is the expected gold.
-        // We test the channel values rather than exact equality so future tweaks
-        // to the shade do not break the test, as long as the colour remains golden.
         let Srgba { red, green, blue, .. } = HINT_PILE_HIGHLIGHT_COLOUR.to_srgba();
-        assert!(red >= 0.9, "gold hint colour must have red ≥ 0.9, got {red}");
+        assert!(red >= 0.7, "gold hint colour must have red ≥ 0.7, got {red}");
-        assert!(green >= 0.7, "gold hint colour must have green ≥ 0.7, got {green}");
+        assert!(green >= 0.5, "gold hint colour must have green ≥ 0.5, got {green}");
-        assert!(blue <= 0.3, "gold hint colour must have blue ≤ 0.3, got {blue}");
+        assert!(blue <= 0.6, "gold hint colour must have blue ≤ 0.6, got {blue}");
+        assert!(red > blue, "gold hint colour must be warmer than cool, got r={red} b={blue}");
+        assert!(green > blue, "gold hint colour must be warmer than cool, got g={green} b={blue}");
     }
 
     #[test]

solitaire_engine/src/ui_modal.rs

@@ -135,7 +135,8 @@ pub const MODAL_ENTER_START_SCALE: f32 = 0.96;
 /// Visual emphasis tier applied to a [`ModalButton`].
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum ButtonVariant {
-    /// Loud yellow CTA — Confirm, Play Again. One per modal; right-aligned.
+    /// Cyan CTA (`ACCENT_PRIMARY`) — Confirm, Play Again, Resume. One per
+    /// modal; right-aligned in the actions row.
     Primary,
     /// Mid-emphasis — Cancel, Close, Done.
     Secondary,
@@ -332,14 +333,17 @@ pub fn spawn_modal_button<M: Component>(
     };
 
     let label_color = match variant {
-        // Primary buttons sit on the loud yellow accent — dark text on
+        // Primary buttons sit on the cyan accent — `BG_BASE` text on
-        // top reads well and passes AAA contrast.
+        // top reads well and passes AAA contrast against `#6fc2ef`.
         ButtonVariant::Primary => BG_BASE,
         ButtonVariant::Secondary | ButtonVariant::Tertiary => TEXT_PRIMARY,
     };
     let caption_color = match variant {
-        // Use a slightly muted version of the label colour so the chip
+        // Muted near-black on the cyan Primary so the hotkey chip reads
-        // reads as a secondary detail without disappearing.
+        // as a secondary detail without disappearing. Deliberately a
+        // pure-black-at-alpha rather than `BG_BASE.with_alpha(...)`:
+        // `BG_BASE` is `#151515` (not 0,0,0), so the alpha-on-cyan
+        // composite would tint slightly cooler than intended here.
         ButtonVariant::Primary => Color::srgba(0.0, 0.0, 0.0, 0.55),
         ButtonVariant::Secondary | ButtonVariant::Tertiary => TEXT_SECONDARY,
     };
@@ -395,9 +399,10 @@ fn hover_bg(variant: ButtonVariant) -> Color {
     }
 }
 
-/// Pressed-state background colour. Primary swaps to the magenta
+/// Pressed-state background colour. Primary swaps to the lavender
-/// secondary accent for a moment of celebration; Secondary darkens to
+/// secondary accent (`ACCENT_SECONDARY`, `#e1a3ee`) for a moment of
-/// the base elevation; Tertiary darkens further.
+/// celebration; Secondary darkens to the base elevation; Tertiary
+/// darkens further to `BG_ELEVATED_PRESSED`.
 fn pressed_bg(variant: ButtonVariant) -> Color {
     match variant {
         ButtonVariant::Primary => ACCENT_SECONDARY,

solitaire_engine/src/ui_theme.rs

@@ -8,12 +8,12 @@
 //! engine; collapsing them into one source of truth keeps the visual
 //! system coherent and makes future palette swaps a single-file change.
 //!
-//! Palette is "Midnight Purple + Balatro accent" — see the 2026-04-30
+//! Palette is "Terminal" (base16-eighties) — see
-//! UX overhaul Phase 2 proposal for the rationale behind specific
+//! `docs/ui-mockups/design-system.md` for the full token spec, mockup
-//! values. The tokens are exposed as `pub const` so static contexts
+//! library, and rationale. The tokens are exposed as `pub const` so
-//! (default colours on Sprite components, etc.) can use them; a future
+//! static contexts (default colours on Sprite components, etc.) can use
-//! `UiTheme` resource can layer runtime switching on top without
+//! them; a future `UiTheme` resource can layer runtime switching on top
-//! changing the constant API.
+//! without changing the constant API.
 
 use bevy::color::Color;
 use bevy::math::Vec2;
@@ -21,93 +21,96 @@ use bevy::prelude::Val;
 use solitaire_data::AnimSpeed;
 
 // ---------------------------------------------------------------------------
-// Colours — Midnight Purple base with a Balatro-yellow primary accent.
+// Colours — Terminal (base16-eighties): near-black surface ramp with a cyan
+// primary accent and lime/lavender/gold/teal/pink semantic accents.
 // ---------------------------------------------------------------------------
 
 /// Window backstop and the default text colour on top of `ACCENT_PRIMARY`.
-/// Deep midnight purple, near-black. `#1A0F2E`.
+/// Near-black terminal background. `#151515`.
-pub const BG_BASE: Color = Color::srgb(0.102, 0.059, 0.180);
+pub const BG_BASE: Color = Color::srgb(0.082, 0.082, 0.082);
 
 /// Elevated surface — modal cards, popover panels, button backgrounds.
-/// One step lighter than `BG_BASE` so cards visually float above the
+/// One step lighter than `BG_BASE` so cards read as a separate plane
-/// felt without needing real drop shadows. `#2D1B69`.
+/// without needing drop shadows. `#202020`.
-pub const BG_ELEVATED: Color = Color::srgb(0.176, 0.106, 0.412);
+pub const BG_ELEVATED: Color = Color::srgb(0.125, 0.125, 0.125);
 
 /// Hovered/highlighted surface — used on button hover and on the
-/// currently-active row of a popover. `#3A2580`.
+/// currently-active row of a popover. `#2a2a2a`.
-pub const BG_ELEVATED_HI: Color = Color::srgb(0.227, 0.145, 0.502);
+pub const BG_ELEVATED_HI: Color = Color::srgb(0.165, 0.165, 0.165);
 
 /// Top elevation step — Secondary button hover, popover currently-
-/// hovered row. One rung above `BG_ELEVATED_HI`. `#482F97`.
+/// hovered row. One rung above `BG_ELEVATED_HI`. `#353535`.
-pub const BG_ELEVATED_TOP: Color = Color::srgb(0.282, 0.184, 0.592);
+pub const BG_ELEVATED_TOP: Color = Color::srgb(0.208, 0.208, 0.208);
 
-/// Pressed-button surface — `BG_ELEVATED` darkened ~15%. `#26155B`.
+/// Pressed-button surface — sits below `BG_ELEVATED` so a press reads
-pub const BG_ELEVATED_PRESSED: Color = Color::srgb(0.149, 0.082, 0.357);
+/// as the surface receding rather than rising. `#1a1a1a`.
+pub const BG_ELEVATED_PRESSED: Color = Color::srgb(0.102, 0.102, 0.102);
 
-/// Uniform scrim under every modal. The audit found 0.60–0.92 alpha
+/// Uniform scrim under every modal. Per the Terminal design system,
-/// drift across 11 overlay plugins; this single value replaces all of
+/// modals dim the table aggressively (95% opacity) without blurring,
-/// them. `rgba(13, 7, 28, 0.85)`.
+/// to maintain the crisp synthwave-flat aesthetic. `rgba(21, 21, 21, 0.95)`.
-pub const SCRIM: Color = Color::srgba(0.051, 0.027, 0.110, 0.85);
+pub const SCRIM: Color = Color::srgba(0.082, 0.082, 0.082, 0.95);
 
-/// Translucent fill for the top-of-window HUD band painted by
+/// Solid fill for the top-of-window HUD band painted by
-/// `hud_plugin::spawn_hud_band`. Same midnight-purple hue as `BG_BASE`,
+/// `hud_plugin::spawn_hud_band`. Terminal HUD chips are opaque
-/// but at 0.70 alpha so the green felt reads through subtly — enough
+/// `surface-container` panels — no transparency — so the chrome reads
-/// to mark the band as "UI" without feeling like a hard chrome strip.
+/// as a status-line strip rather than a glassy overlay. `#202020`.
-/// `rgba(26, 15, 46, 0.70)`.
+pub const BG_HUD_BAND: Color = Color::srgba(0.125, 0.125, 0.125, 1.0);
-pub const BG_HUD_BAND: Color = Color::srgba(0.102, 0.059, 0.180, 0.70);
 
-/// Primary text — warm off-white with a hint of purple to fit the
+/// Primary text — warm off-white. The base16-eighties foreground.
-/// midnight palette without feeling clinical. `#F5F0FF`.
+/// `#d0d0d0`.
-pub const TEXT_PRIMARY: Color = Color::srgb(0.961, 0.941, 1.000);
+pub const TEXT_PRIMARY: Color = Color::srgb(0.816, 0.816, 0.816);
 
-/// Secondary text — captions, hints, muted labels. Lavender-grey.
+/// Secondary text — captions, hints, muted labels. `#a0a0a0`.
-/// `#B5A8D5`.
+pub const TEXT_SECONDARY: Color = Color::srgb(0.627, 0.627, 0.627);
-pub const TEXT_SECONDARY: Color = Color::srgb(0.710, 0.659, 0.835);
 
-/// Disabled text — greyed-out buttons, locked items. `#6B5F85`.
+/// Disabled text — greyed-out buttons, locked items. `#505050`.
-pub const TEXT_DISABLED: Color = Color::srgb(0.420, 0.373, 0.522);
+pub const TEXT_DISABLED: Color = Color::srgb(0.314, 0.314, 0.314);
 
-/// Balatro-yellow primary accent — the loudest colour in the palette.
+/// Cyan primary accent — the CTA colour of the system. Reserved for
-/// Reserved for primary actions (Confirm, Play Again), win states, and
+/// primary actions (Play, Resume, Save), focus rings, and selection.
-/// "look here" callouts. `BG_BASE` text on top of this colour passes
+/// `BG_BASE` text on top of this colour passes AAA contrast. `#6fc2ef`.
-/// AAA contrast. `#FFD23F`.
+pub const ACCENT_PRIMARY: Color = Color::srgb(0.435, 0.761, 0.937);
-pub const ACCENT_PRIMARY: Color = Color::srgb(1.000, 0.824, 0.247);
 
 /// Brightened `ACCENT_PRIMARY` for hover states on primary buttons.
-/// Picks up saturation while keeping the same hue. `#FFE36B`.
+/// Picks up luminance while keeping the same hue. `#a8dcf5`.
-pub const ACCENT_PRIMARY_HOVER: Color = Color::srgb(1.000, 0.890, 0.420);
+pub const ACCENT_PRIMARY_HOVER: Color = Color::srgb(0.659, 0.863, 0.961);
 
-/// Warm magenta secondary accent — celebratory states (achievement
+/// Lavender secondary accent — celebratory states (level-up,
-/// unlocked, streak milestones). Used sparingly so it stays special.
+/// achievement unlocked, streak milestones). Used sparingly so it stays
-/// `#FF6B9D`.
+/// special. `#e1a3ee`.
-pub const ACCENT_SECONDARY: Color = Color::srgb(1.000, 0.420, 0.616);
+pub const ACCENT_SECONDARY: Color = Color::srgb(0.882, 0.639, 0.933);
 
-/// Success — foundation completion, valid drop tint, sync OK. `#4ADE80`.
+/// Success — foundation completion, valid drop tint, sync OK. Lime
-pub const STATE_SUCCESS: Color = Color::srgb(0.290, 0.871, 0.502);
+/// from base16-eighties. `#acc267`.
+pub const STATE_SUCCESS: Color = Color::srgb(0.675, 0.761, 0.404);
 
-/// Warning — penalty signal. **Both** Undo and Recycle counters use
+/// Warning — penalty signal, daily-seed expiry countdown, sync-pending
-/// this when non-zero (the audit found these were inconsistent — Undos
+/// status. Gold from base16-eighties. **Both** Undo and Recycle
-/// amber, Recycles white). `#FFA94D`.
+/// counters use this when non-zero. `#ddb26f`.
-pub const STATE_WARNING: Color = Color::srgb(1.000, 0.663, 0.302);
+pub const STATE_WARNING: Color = Color::srgb(0.867, 0.698, 0.435);
 
-/// Danger — rejection shake, illegal placement, sync error. `#F77272`.
+/// Danger — rejection shake, illegal placement, sync error. Pink from
-pub const STATE_DANGER: Color = Color::srgb(0.969, 0.447, 0.447);
+/// base16-eighties (also doubles as `suit-red` per the design.md
+/// rationale). `#fb9fb1`.
+pub const STATE_DANGER: Color = Color::srgb(0.984, 0.624, 0.694);
 
-/// Info — daily-challenge constraint, draw-cycle indicator. `#6BBBFF`.
+/// Info — neutral system toasts, sync-connected indicator. Teal from
-pub const STATE_INFO: Color = Color::srgb(0.420, 0.733, 1.000);
+/// base16-eighties. `#12cfc0`.
+pub const STATE_INFO: Color = Color::srgb(0.071, 0.812, 0.753);
 
 /// Soft fill colour for the drop-target overlay shown over every legal
-/// destination pile while the player is dragging a card. Same green hue
+/// destination pile while the player is dragging a card. Same lime hue
-/// as `STATE_SUCCESS` (`#4ADE80`) so the visual language stays
+/// as `STATE_SUCCESS` (`#acc267`) so the visual language stays
 /// consistent, but at 10 % alpha so the underlying card faces remain
 /// fully readable through the wash.
-pub const DROP_TARGET_FILL: Color = Color::srgba(0.290, 0.871, 0.502, 0.10);
+pub const DROP_TARGET_FILL: Color = Color::srgba(0.675, 0.761, 0.404, 0.10);
 
 /// Outline colour for the drop-target overlay. Matches the
 /// `STATE_SUCCESS` hue at 75 % alpha so the rectangle border reads
 /// unmistakably against both the felt and stacked card faces without
 /// drowning the cards themselves.
-pub const DROP_TARGET_OUTLINE: Color = Color::srgba(0.290, 0.871, 0.502, 0.75);
+pub const DROP_TARGET_OUTLINE: Color = Color::srgba(0.675, 0.761, 0.404, 0.75);
 
 /// Thickness of the drop-target outline edges, in world-space pixels.
 pub const DROP_TARGET_OUTLINE_PX: f32 = 3.0;
@@ -131,7 +134,7 @@ pub const STOCK_BADGE_BG: Color = BG_ELEVATED_HI;
 /// Foreground (text) colour of the stock-pile remaining-count chip.
 ///
 /// `ACCENT_PRIMARY` keeps the chip readable against the elevated
-/// purple background and matches the Balatro accent already used for
+/// surface background and matches the cyan accent already used for
 /// other "look here" callouts.
 pub const STOCK_BADGE_FG: Color = ACCENT_PRIMARY;
 
@@ -159,15 +162,19 @@ pub const Z_STOCK_BADGE: f32 = 30.0;
 /// separately via [`CARD_SHADOW_ALPHA_IDLE`] / [`CARD_SHADOW_ALPHA_DRAG`].
 pub const CARD_SHADOW_COLOR: Color = Color::srgb(0.0, 0.0, 0.0);
 
-/// Alpha for the resting-state card shadow. Low enough that 52 stacked
+/// Alpha for the resting-state card shadow. Set to 0 under the Terminal
-/// shadows do not darken the felt into a uniform smear, high enough that
+/// design system: depth is achieved through 1px suit-color borders and
-/// each card reads as separated from the surface.
+/// tonal layering, not blur shadows ("no `box-shadow` anywhere" is a
-pub const CARD_SHADOW_ALPHA_IDLE: f32 = 0.25;
+/// hard constraint of `docs/ui-mockups/design-system.md`). The shadow
+/// rendering code path is left in place so a future palette swap can
+/// re-enable it without touching consumers.
+pub const CARD_SHADOW_ALPHA_IDLE: f32 = 0.0;
 
-/// Alpha for the lifted/dragged card shadow. Stronger than the idle value
+/// Alpha for the lifted/dragged card shadow. Set to 0 for the same
-/// so the dragged stack visibly "casts more shadow" while the player holds
+/// reason as [`CARD_SHADOW_ALPHA_IDLE`]. Drag affordance under the
-/// it above the table.
+/// Terminal system is the cyan focus glow + z-index lift, not a deeper
-pub const CARD_SHADOW_ALPHA_DRAG: f32 = 0.40;
+/// shadow.
+pub const CARD_SHADOW_ALPHA_DRAG: f32 = 0.0;
 
 /// World-space pixel offset of the resting-state card shadow relative to
 /// its parent card centre. Down-and-right matches a soft top-left light
@@ -197,15 +204,20 @@ pub const CARD_SHADOW_PADDING_DRAG: Vec2 = Vec2::new(8.0, 8.0);
 pub const CARD_SHADOW_LOCAL_Z: f32 = -0.05;
 
 /// Subtle border — default popover, card, and idle button outline.
-pub const BORDER_SUBTLE: Color = Color::srgba(0.647, 0.549, 1.000, 0.12);
+/// `outline-variant` from the design system at full alpha; the Terminal
+/// aesthetic uses solid 1px borders rather than translucent washes.
+/// `#353535`.
+pub const BORDER_SUBTLE: Color = Color::srgba(0.208, 0.208, 0.208, 1.0);
 
 /// Strong border — hover outline, focused button, active popover.
-pub const BORDER_STRONG: Color = Color::srgba(0.647, 0.549, 1.000, 0.30);
+/// `outline` from the design system. `#505050`.
+pub const BORDER_STRONG: Color = Color::srgba(0.314, 0.314, 0.314, 1.0);
 
-/// 2 px ring drawn around the focused interactive element. Balatro yellow
+/// 2 px ring drawn around the focused interactive element. Cyan
 /// (matches `ACCENT_PRIMARY`) at 85% alpha so the ring stays legible
 /// against both elevated surfaces and the modal scrim backdrop.
-pub const FOCUS_RING: Color = Color::srgba(1.0, 0.823, 0.247, 0.85);
+/// `rgba(111, 194, 239, 0.85)`.
+pub const FOCUS_RING: Color = Color::srgba(0.435, 0.761, 0.937, 0.85);
 
 // ---------------------------------------------------------------------------
 // Typography scale (px) — 5 rungs replace the prior