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

  html {
    scroll-behavior: smooth;
    scroll-padding-top: 5rem;
  }

  body {
    margin: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  /* Navigation link active state */
  .nav-link.active {
    color: #f5744a !important;
  }

  /* Mobile menu transitions */
  #mobile-menu {
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
  }

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

  .mobile-nav-link {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.25s ease, transform 0.25s ease;
  }

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

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

  /* Scroll reveal animations */
  @media (prefers-reduced-motion: no-preference) {
    .reveal {
      opacity: 0;
      transform: translateY(28px);
      transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
    }

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

    /* Staggered delays for grid items */
    .reveal:nth-child(1) { transition-delay: 0ms; }
    .reveal:nth-child(2) { transition-delay: 80ms; }
    .reveal:nth-child(3) { transition-delay: 160ms; }
    .reveal:nth-child(4) { transition-delay: 240ms; }
    .reveal:nth-child(5) { transition-delay: 320ms; }
    .reveal:nth-child(6) { transition-delay: 400ms; }
  }

  /* Reduced motion */
  @media (prefers-reduced-motion: reduce) {
    html {
      scroll-behavior: auto;
    }

    .reveal {
      opacity: 1 !important;
      transform: none !important;
      transition: none !important;
    }

    #mobile-menu .mobile-nav-link {
      opacity: 1;
      transform: none;
      transition: none;
    }
  }

  /* Custom scrollbar */
  ::-webkit-scrollbar {
    width: 8px;
  }

  ::-webkit-scrollbar-track {
    background: #1e2028;
  }

  ::-webkit-scrollbar-thumb {
    background: #5c6070;
    border-radius: 4px;
  }

  ::-webkit-scrollbar-thumb:hover {
    background: #7a7e8e;
  }

  /* Focus visible styles */
  a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
    outline: 2px solid #f5744a;
    outline-offset: 2px;
    border-radius: 0.5rem;
  }

  /* Header background transition */
  #header-bg {
    background: rgba(17, 18, 24, 0);
    backdrop-filter: blur(0px);
    -webkit-backdrop-filter: blur(0px);
  }

  #header-bg.scrolled {
    background: rgba(17, 18, 24, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
  }

  /* Hero scroll indicator animation */
  @keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(6px); }
  }

  /* Print styles */
  @media print {
    header, #contact-form button, .reveal {
      display: none !important;
    }

    body {
      color: #1e2028;
      background: white;
    }

    section {
      page-break-inside: avoid;
    }
  }