Mobile optimizations for Card Sorting game:
**Spectator Mode Bottom Sheet (iPhone):**
- Convert right sidebar to compact bottom sheet (120px tall)
- 3-column horizontal grid layout for stats (Time/Cards/Accuracy)
- Compact sizing: 8px padding, 10px labels, 16px values
- Dual-orientation toggle: ▲/▼ on mobile, ◀/▶ on desktop
- Emoji-only labels on mobile to save space
- Full viewport width on mobile (no wasted space)
**Results Screen:**
- Vertical layout on mobile (score panel above cards)
- Dynamic card sizing based on count (5→130%, 15→105%)
- Horizontal action buttons with equal widths
- 130px top padding to avoid mini app nav
- Compact score display (80px circle vs 160px desktop)
**Mini App Nav:**
- Prevent text wrapping with whiteSpace: nowrap
- Consistent height regardless of content length
**Bug Fixes:**
- Remove dead "Reveal Numbers" button code
- Fix checkSolution onClick handler type error
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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