- Add complete 2D control panel with HTML structure and CSS styling
- Implement JavaScript functionality for all control buttons:
- Fullscreen toggle for immersive 16:9 video experience
- Play/pause with dynamic icon switching
- Back/forward 15-second skip controls
- Mute/unmute toggle
- Click-to-seek progress bar with real-time updates
- Add auto-hide behavior (5-second timeout) with mouse/touch activation
- Integrate with existing 2D mode - shows only when VR not supported
- Include all button PNG assets (normal and hover states)
- Responsive design for mobile devices
- Professional styling matching design specifications
- Replace embedded SVG code with external play.svg file
- Update HTML to use <img src='play.svg'> for cleaner code
- Update CSS selector from 'svg' to 'img' element
- Maintain all existing functionality and styling
- Improve code maintainability and separation of concerns
- Enable better caching and easier SVG updates
- Replace text button with beautiful SVG play button
- Position button over center of video with responsive sizing
- Add smooth hover and click animations
- Hide button after click and enable native browser controls for 2D
- Maintain VR functionality when supported
- Add proper accessibility with aria-label
- Responsive design works on mobile and desktop
