Redesigned buttons with modern styling and hover effects

[Tia-ani]

Enhanced Button Design with Glassmorphism Effect:

• Solved Issue Enhance Buttons Design with Modern and Attractive Styling #25
• Glassmorphism Design: Implemented transparent gradient buttons with backdrop blur for a modern frosted glass effect
• Consistent Styling: Applied uniform purple gradient (#667eea to #764ba2) across all language buttons with matching shadows and borders
• Interactive Animations: Added smooth hover effects (lift, scale, shimmer), active states, and cubic-bezier transitions for premium feel
• Responsive Layout: Optimized grid system for desktop, tablet (≤768px), and mobile (≤480px) with 2-column layout on small screens
• Accessibility: Added focus indicators, rel="noopener" security, prefers-reduced-motion support, and high contrast mode compatibility
• Typography Update: Changed heading to pure white for better contrast and removed unnecessary bold formatting from footer