a7cc899832
Changes: - Replaced fixed positioning with flexible layout for mobile buttons - Now shows 4 buttons on mobile: Download, Print, Shortcuts, Info - Hide only Zoom button on mobile (accessible via hamburger menu) - All buttons now 50×50px (consistent size, info button was smaller) - Even 10px spacing between buttons - Perfectly centered as a group in viewport - Future-proof: easy to add/remove buttons without breaking layout Layout details: - Total width: 4 buttons × 50px + 3 gaps × 10px = 230px - Centered using calc(50% - offset) for each button - Maintains smooth hover effects with translateY only - All buttons at same vertical position (bottom: 1.5rem) Benefits: - Consistent button sizes across mobile/desktop - Maintainable: adding/removing buttons only requires adjusting calculations - Better UX: users can access all main actions from bottom bar - Shortcuts and info buttons now easily accessible on mobile