*, *::before, *::after {
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
  }

  body {
    margin: 0;
    overflow-x: hidden;
  }

  /* Hero entrance animations */
  @keyframes fadeUp {
    from {
      opacity: 0;
      transform: translateY(30px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .animate-fade-up {
    animation: fadeUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  }

  /* Scroll reveal — progressive enhancement */
  @media (prefers-reduced-motion: no-preference) {
    .reveal {
      opacity: 0;
      transform: translateY(40px);
      transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .reveal.revealed {
      opacity: 1;
      transform: translateY(0);
    }
  }

  /* Default state: always visible (no JS required) */
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  @media (prefers-reduced-motion: no-preference) {
    .reveal {
      opacity: 0;
      transform: translateY(40px);
      transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .reveal.revealed {
      opacity: 1;
      transform: translateY(0);
    }
  }

  /* Mobile menu */
  #mobile-menu.open {
    opacity: 1;
    pointer-events: all;
  }

  #mobile-menu:not(.open) {
    opacity: 0;
    pointer-events: none;
  }

  /* Navbar scrolled state */
  #navbar.scrolled {
    background: rgba(10, 21, 40, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  /* Custom scrollbar */
  ::-webkit-scrollbar {
    width: 8px;
  }
  ::-webkit-scrollbar-track {
    background: #0a1528;
  }
  ::-webkit-scrollbar-thumb {
    background: #1e3a66;
    border-radius: 4px;
  }
  ::-webkit-scrollbar-thumb:hover {
    background: #2a4d88;
  }

  /* Selection color */
  ::selection {
    background: rgba(53, 160, 104, 0.3);
    color: #f0f4ff;
  }

  /* Image lazy load fallback */
  img[loading="lazy"] {
    opacity: 1;
  }
</style>