Hand tiles (components/hand.js):
- Proper PIP_POSITIONS matching board tiles (position-based, not flex-wrap)
- Dynamic sizing: tiles scale to always fit viewport width
- Fan layout for 5+ tiles (card-like spread with arc lift)
- Slide-in animation for newly drawn tiles
- Premium domino look: gradient bg, 3D pips, edge shine, realistic border

Board (canvas/board.js):
- Smooth animated auto-pan + auto-zoom when chain exceeds viewport
- Lerp-based transitions (no jarring jumps on new tiles)
- Vignette overlay for depth
- Manual pan updates target state for smooth resume

Tile renderer (canvas/tile-renderer.js):
- Gradient fill (cream to warm), thicker border, top-edge shine
- 3D pips with specular highlights
- Better shadow depth and double-tile accent

Drag proxy (components/drag.js):
- Matches hand tile visual style (position-based pips)
- Valid/invalid state with colored borders + glow
- Spring animation on snap/bounce-back

Room screens (scenes/room.js):
- Unified design language across menu/bot-picker/target-picker/lobby
- Floating icon animation, consistent card styles
- Touch-responsive buttons with spring scale

Game layout (scenes/game.js):
- Polished opponent bar with avatar border glow
- Score bar with colored indicators
- Control buttons with active states and pulse animation
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>