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

  html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

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

  /* Custom scrollbar */
  ::-webkit-scrollbar {
    width: 8px;
  }
  ::-webkit-scrollbar-track {
    background: #051525;
  }
  ::-webkit-scrollbar-thumb {
    background: #0F3460;
    border-radius: 4px;
  }
  ::-webkit-scrollbar-thumb:hover {
    background: #4FD1C5;
  }

  /* Selection */
  ::selection {
    background: rgba(79, 209, 197, 0.3);
    color: #fff;
  }

  /* Marquee animation */
  @keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
  }

  .animate-marquee {
    animation: marquee 30s linear infinite;
  }

  /* Reveal animations */
  .reveal-up {
    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-up.revealed {
    opacity: 1;
    transform: translateY(0);
  }

  /* Nav scroll state */
  #site-header.scrolled {
    background: rgba(5, 21, 37, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  /* Service card tilt effect */
  .service-card {
    transform: translateY(0);
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.5s ease;
  }

  .service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(79, 209, 197, 0.15);
  }

  /* Mobile link animation */
  .mobile-link {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease, transform 0.4s ease, color 0.3s ease;
  }

  #mobile-menu.open .mobile-link {
    opacity: 1;
    transform: translateY(0);
  }

  #mobile-menu.open .mobile-link:nth-child(1) { transition-delay: 0.05s; }
  #mobile-menu.open .mobile-link:nth-child(2) { transition-delay: 0.1s; }
  #mobile-menu.open .mobile-link:nth-child(3) { transition-delay: 0.15s; }
  #mobile-menu.open .mobile-link:nth-child(4) { transition-delay: 0.2s; }
  #mobile-menu.open .mobile-link:nth-child(5) { transition-delay: 0.25s; }

  /* Hamburger animation */
  #mobile-menu.open #bar1 {
    transform: translateY(4px) rotate(45deg);
  }
  #mobile-menu.open #bar2 {
    opacity: 0;
    transform: scaleX(0);
  }
  #mobile-menu.open #bar3 {
    transform: translateY(-4px) rotate(-45deg);
    width: 1.5rem;
  }

  /* Parallax hero subtle */
  #hero {
    will-change: transform;
  }

  /* Form focus styles */
  input:focus, select:focus, textarea:focus {
    outline: none;
  }

  /* Smooth image loading */
  img {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
  }

  /* Responsive typography tweaks */
  @media (max-width: 640px) {
    .font-serif {
      line-height: 1.1;
    }
  }

  @media (min-width: 641px) and (max-width: 1024px) {
    .service-card .absolute.inset-0 img {
      transition: opacity 0.5s ease;
    }
  }
</style>