/* Base */
  html {
    scroll-behavior: smooth;
  }

  body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  ::selection {
    background-color: #99f6e4;
    color: #042f2e;
  }

  /* Scroll reveal — progressive enhancement */
  .scroll-reveal {
    opacity: 1;
    transform: none;
    transition: opacity 0.6s ease, transform 0.6s ease;
  }

  @media (prefers-reduced-motion: no-preference) {
    .scroll-reveal {
      opacity: 0;
      transform: translateY(24px);
    }
    .scroll-reveal.revealed {
      opacity: 1;
      transform: translateY(0);
    }
  }

  /* Stat cards */
  .stat-card {
    animation: float 6s ease-in-out infinite;
  }

  .stat-card:nth-child(2) {
    animation-delay: -2s;
  }

  .stat-card:nth-child(3) {
    animation-delay: -4s;
  }

  @keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
  }

  /* Menu card image */
  .menu-card img {
    transition: transform 0.5s ease;
  }

  /* Navbar transition */
  #nav.scrolled {
    background-color: rgba(13, 148, 136, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  }

  /* Mobile menu animation */
  #mobile-menu {
    animation: slideDown 0.3s ease;
  }

  @keyframes slideDown {
    from {
      opacity: 0;
      transform: translateY(-8px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  /* Smooth focus outlines */
  a:focus-visible,
  button:focus-visible {
    outline: 2px solid #5eead4;
    outline-offset: 2px;
    border-radius: 4px;
  }

  /* Custom scrollbar */
  ::-webkit-scrollbar {
    width: 8px;
  }
  ::-webkit-scrollbar-track {
    background: #f1f5f9;
  }
  ::-webkit-scrollbar-thumb {
    background: #94a3b8;
    border-radius: 4px;
  }
  ::-webkit-scrollbar-thumb:hover {
    background: #64748b;
  }