- Added responsive hamburger menu button visible on mobile (sm:hidden)
- Hidden desktop navigation on mobile (hidden sm:block)
- Added mobile menu dropdown with all navigation links
- Added mobile language switcher and theme toggle in menu
- JavaScript toggle functionality for menu open/close
- Auto-close menu when clicking navigation links
- Updated theme toggle to work with both desktop and mobile toggles
- Proper ARIA attributes for accessibility (aria-expanded, aria-label)
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