Issues fixed:
1. Zoom button now uses purple color (rgba(155, 89, 182, 0.7)) instead of blue
2. Info button keeps blue color (rgba(52, 152, 219, 0.7))
3. Both buttons now show distinct colors in default state, not just on hover
4. Device detection now considers viewport width, not just user agent
5. Buttons no longer hide in responsive mode at desktop viewport sizes
Changes:
- Updated zoom-toggle-btn to use purple background color
- Updated info-button to use blue background color (explicit, not var)
- Modified device-detection.js to check viewport width (≤900px) in addition to UA
- Added resize listener to update device class dynamically
- Created test (67-button-colors-and-visibility-test.mjs) to verify fixes
Testing:
- Desktop (1278px): All buttons visible with distinct colors
- Mobile (375px): Zoom/shortcuts hidden, core buttons visible
- Device detection now viewport-aware (prevents hiding at desktop sizes)
Issue 1: Blur bar compatibility (Android doesn't always show at bottom)
✅ Solution: Wrap blur bar in @supports query for backdrop-filter
- Only shows on devices that support backdrop-filter (primarily iOS)
- Android devices without support won't see the bar
- Prevents layout issues on non-iOS devices
Issue 2: Keyboard shortcuts button on real mobile (no physical keyboard)
✅ Solution: Device detection + conditional hiding
- Added device-detection.js: Detects real mobile vs desktop browser
- Checks user agent (Android, iPhone, iPad, etc.) + touch support
- Adds 'is-mobile-device' or 'is-desktop' class to <html>
- CSS hides shortcuts button only on real mobile devices
- Desktop browser in mobile view: shortcuts button still visible (for testing)
Implementation Details:
1. Device Detection (static/js/device-detection.js):
- User agent detection: /Android|iPhone|iPad|etc./
- Touch support check: ontouchstart + maxTouchPoints
- Class added to <html>: is-mobile-device or is-desktop
2. Blur Bar (@supports query):
- Detects backdrop-filter support before applying
- iOS: Shows blur bar with backdrop-filter
- Android (most): No blur bar (no backdrop-filter support)
- Prevents empty/broken bar on incompatible devices
3. CSS Hiding Rules:
- .is-mobile-device .shortcuts-btn { display: none !important; }
- Also hides zoom-toggle-btn and zoom-control on real mobile
- Desktop mobile view: shortcuts button remains visible
Files Modified:
- static/js/device-detection.js: NEW - Device detection logic
- templates/index.html: Load device-detection.js early
- static/css/05-responsive/_breakpoints.css: @supports wrapper for blur bar
- static/css/04-interactive/_scroll-behavior.css: Hide shortcuts on real mobile
- tests/mjs/52-mobile-device-detection-test.mjs: Comprehensive device detection test
Test Results:
✅ iPhone (real mobile): is-mobile-device class, shortcuts hidden
✅ Desktop browser (mobile view): is-desktop class, shortcuts visible
✅ Blur bar: Only shows on devices with backdrop-filter support
juanatsap