Fixes three critical mobile UI issues:
1. Theme Button Transparency (FIXED)
- Changed theme button from 50% to full opacity on mobile
- Updated _themes.css with rgba(x, y, z, 1) for all theme modes
- Added opacity: 1 !important to mobile media query
2. Info Button Color Differentiation (FIXED)
- Changed info button from green (#27ae60) to blue (#3498db)
- Now visually distinct from green back-to-top button
- Updated all states: default, hover, at-bottom
3. Button Layout Reorganization (FIXED)
- Added .is-mobile-device rules for 5-button layout (no shortcuts)
- Buttons centered without gap: Download, Print, Theme, Info, Back-to-top
- Total width: 290px (5 buttons + 4 gaps) vs 350px (6 buttons)
Files modified:
- static/css/01-foundation/_themes.css - Primary theme button fix
- static/css/04-interactive/_scroll-behavior.css - Info color + layout
- static/css/color-theme.css - Mobile device positioning sync
- tests/mjs/53-final-mobile-fixes-test.mjs - Comprehensive validation
Test results:
✅ Shortcuts hidden on real mobile (iPhone user agent)
✅ 5 buttons evenly spaced with no gap (60px spacing)
✅ Info button blue (52, 152, 219) vs back-to-top green (39, 174, 96)
✅ Theme button full opacity (alpha: 1, opacity: 1)
juanatsap