/* Global Styles */
    .gradient-bg {
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    }
    .trending-card {
      transition: all 0.3s ease;
      transform: translateY(0);
    }

    .user-dropdown {
            display: none;
    }
    
    .user-dropdown.active {
            display: block;
    }

    .trending-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    }
    .topic-tag {
      transition: all 0.2s ease;
    }
    .topic-tag:hover {
      transform: scale(1.05);
    }
    .search-glow:focus {
      box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.5);
    }
    .stats-counter {
      animation: countUp 2s ease-out;
    }
    @keyframes countUp {
      from { opacity: 0; transform: translateY(20px); }
      to { opacity: 1; transform: translateY(0); }
    }
    .pulse-dot {
      animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
    }
    .featured-gradient {
      background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    }
    .category-hover:hover {
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      color: white;
    }
    .mobile-menu {
      transform: translateX(-100%);
      transition: transform 0.3s ease;
    }
    .mobile-menu.active {
      transform: translateX(0);
    }
    .dataset-card {
      transition: all 0.3s ease;
    }
    .dataset-card:hover {
      transform: translateY(-2px);
    }
    .floating-action {
      position: fixed;
      bottom: 2rem;
      right: 2rem;
      z-index: 50;
    }
    .modal {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(0, 0, 0, 0.5);
      z-index: 1000;
    }
    .modal.active {
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .animate-fade-in {
      animation: fadeIn 0.5s ease-in;
    }
    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(20px); }
      to { opacity: 1; transform: translateY(0); }
    }

    /* Enhanced Footer Styles */
    .footer-gradient {
      background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
      position: relative;
    }
    
    .footer-section {
      opacity: 0;
      transform: translateY(30px);
      animation: fadeInUp 0.8s ease forwards;
      animation-play-state: paused;
    }
    
    .footer-section:nth-child(1) { animation-delay: 0.1s; }
    .footer-section:nth-child(2) { animation-delay: 0.2s; }
    .footer-section:nth-child(3) { animation-delay: 0.3s; }
    .footer-section:nth-child(4) { animation-delay: 0.4s; }
    
    @keyframes fadeInUp {
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }
    
    .footer-link {
      position: relative;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      display: inline-flex;
      align-items: center;
      padding: 0.25rem 0;
      border-radius: 0.25rem;
    }
    
    .footer-link::after {
      content: '';
      position: absolute;
      width: 0;
      height: 2px;
      bottom: -2px;
      left: 0;
      background: linear-gradient(90deg, #667eea, #764ba2);
      transition: width 0.3s ease;
    }
    
    .footer-link:hover::after {
      width: 100%;
    }
    
    .footer-link:hover {
      color: #667eea !important;
      transform: translateX(5px);
    }
    
    .footer-link i {
      transition: all 0.3s ease;
    }
    
    .footer-link:hover i {
      transform: scale(1.2);
      color: #667eea;
    }
    
    .newsletter-input {
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.2);
      backdrop-filter: blur(10px);
      transition: all 0.3s ease;
      font-size: 0.875rem;
    }
    
    .newsletter-input:focus {
      background: rgba(255, 255, 255, 0.15);
      border-color: #667eea;
      box-shadow: 0 0 20px rgba(102, 126, 234, 0.3);
      outline: none;
    }
    
    .newsletter-input::placeholder {
      color: rgba(255, 255, 255, 0.6);
    }
    
    .subscribe-btn {
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      position: relative;
      overflow: hidden;
      transition: all 0.3s ease;
      border: none;
      cursor: pointer;
      font-weight: 600;
    }
    
    .subscribe-btn::before {
      content: '';
      position: absolute;
      top: 0;
      left: -100%;
      width: 100%;
      height: 100%;
      background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
      transition: left 0.5s ease;
    }
    
    .subscribe-btn:hover::before {
      left: 100%;
    }
    
    .subscribe-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
    }
    
    .subscribe-btn:active {
      transform: translateY(0);
    }
    
    .social-icon {
      width: 45px;
      height: 45px;
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.2);
      backdrop-filter: blur(10px);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      position: relative;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
      text-decoration: none;
      color: rgba(255, 255, 255, 0.8);
    }
    
    .social-icon::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, transparent, rgba(255,255,255,0.1));
      opacity: 0;
      transition: opacity 0.3s ease;
    }
    
    .social-icon:hover::before {
      opacity: 1;
    }
    
    .social-icon:hover {
      transform: translateY(-3px) rotate(5deg);
      border-color: #667eea;
      color: #667eea !important;
      box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
    }
    
    .social-icon i {
      font-size: 1.1rem;
      transition: all 0.3s ease;
    }
    
    .social-icon:hover i {
      transform: scale(1.1);
    }
    
    .data-stats {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      backdrop-filter: blur(10px);
      border-radius: 15px;
      padding: 20px;
      text-align: center;
      transition: all 0.3s ease;
    }
    
    .data-stats:hover {
      background: rgba(255, 255, 255, 0.08);
      transform: translateY(-5px);
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    }
    
    .floating-particles {
      position: absolute;
      width: 100%;
      height: 100%;
      overflow: hidden;
      pointer-events: none;
    }
    
    .particle {
      position: absolute;
      background: rgba(102, 126, 234, 0.3);
      border-radius: 50%;
      animation: float 6s ease-in-out infinite;
    }
    
    .particle:nth-child(1) { 
      width: 4px; 
      height: 4px; 
      left: 10%; 
      animation-delay: 0s; 
    }
    .particle:nth-child(2) { 
      width: 6px; 
      height: 6px; 
      left: 20%; 
      animation-delay: 1s; 
    }
    .particle:nth-child(3) { 
      width: 3px; 
      height: 3px; 
      left: 60%; 
      animation-delay: 2s; 
    }
    .particle:nth-child(4) { 
      width: 5px; 
      height: 5px; 
      left: 80%; 
      animation-delay: 3s; 
    }
    .particle:nth-child(5) { 
      width: 4px; 
      height: 4px; 
      left: 40%; 
      animation-delay: 4s; 
    }
    
    @keyframes float {
      0%, 100% { 
        transform: translateY(0) rotate(0deg); 
        opacity: 0; 
      }
      50% { 
        transform: translateY(-100px) rotate(180deg); 
        opacity: 1; 
      }
    }
    
    .success-message {
      display: none;
      background: linear-gradient(135deg, #10b981 0%, #059669 100%);
      color: white;
      padding: 12px 20px;
      border-radius: 8px;
      margin-top: 10px;
      animation: slideIn 0.5s ease;
      font-size: 0.875rem;
      font-weight: 500;
    }
    
    @keyframes slideIn {
      from { 
        transform: translateX(-100%); 
        opacity: 0; 
      }
      to { 
        transform: translateX(0); 
        opacity: 1; 
      }
    }
    
    .continent-badge {
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      color: white;
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 12px;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      display: inline-block;
      box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
    }
    
    .footer-divider {
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
      margin: 30px 0;
    }

    /* Additional improvements for better visual hierarchy */
    .footer-gradient h4 {
      color: #ffffff;
      margin-bottom: 1.5rem;
    }

    .footer-gradient p {
      line-height: 1.6;
    }

    /* Responsive improvements */
    @media (max-width: 768px) {
      .footer-section {
        margin-bottom: 2rem;
      }
      
      .social-icon {
        width: 40px;
        height: 40px;
      }
      
      .data-stats {
        padding: 15px;
      }
    }

    /* Smooth scrolling for footer links */
    .footer-link {
      scroll-behavior: smooth;
    }

    /* Enhanced focus states for accessibility */
    .newsletter-input:focus,
    .subscribe-btn:focus,
    .social-icon:focus,
    .footer-link:focus {
      outline: 2px solid #667eea;
      outline-offset: 2px;
    }