/* ── Base ── */
  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body { overflow-x: hidden; }

  /* ── Navbar ── */
  .nav-fixed {
    transition: box-shadow 0.3s ease;
  }

  /* ── Service Cards ── */
  .service-card {
    will-change: transform;
  }

  /* ── Scroll Reveal (progressive enhancement) ── */
  @media (prefers-reduced-motion: no-preference) {
    .reveal {
      opacity: 1;
      transform: none;
      transition: opacity 0.6s ease, transform 0.6s ease;
    }

    .reveal[data-reveal] {
      opacity: 0;
      transform: translateY(24px);
      transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
    }

    .reveal[data-reveal="left"] {
      transform: translateX(-24px);
    }

    .reveal[data-reveal="right"] {
      transform: translateX(24px);
    }

    .reveal[data-reveal="scale"] {
      transform: scale(0.96);
    }
  }

  /* ── Stagger children ── */
  .stagger-children .reveal[data-reveal] {
    opacity: 0;
    transform: translateY(24px);
  }

  @media (prefers-reduced-motion: no-preference) {
    .stagger-children .reveal[data-reveal].is-visible {
      animation: staggerIn 0.6s cubic-bezier(0.22, 1, 0.36, 1) forwards;
    }
  }

  @keyframes staggerIn {
    to {
      opacity: 1;
      transform: translateY(0) translateX(0) scale(1);
    }
  }

  /* ── Mobile menu animation ── */
  #mobile-menu {
    animation: slideDown 0.25s ease;
  }

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

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

  /* ── Selection ── */
  ::selection {
    background: rgba(200, 162, 58, 0.2);
    color: #0a1628;
  }

  /* ── Scrollbar ── */
  ::-webkit-scrollbar { width: 8px; }
  ::-webkit-scrollbar-track { background: #0a1628; }
  ::-webkit-scrollbar-thumb { background: #1a3a6e; border-radius: 4px; }
  ::-webkit-scrollbar-thumb:hover { background: #c8a23a; }

  /* ── Utility ── */
  .nav-height { padding-top: 72px; }