/* ── Base & Utilities ── */
  html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
  }

  body {
    overflow-x: hidden;
  }

  /* ── Scroll Reveal (progressive enhancement) ── */
  @media (prefers-reduced-motion: no-preference) {
    .reveal-up {
      opacity: 0;
      transform: translateY(30px);
      transition: opacity 0.7s ease, transform 0.7s ease;
    }
    .reveal-left {
      opacity: 0;
      transform: translateX(-30px);
      transition: opacity 0.7s ease, transform 0.7s ease;
    }
    .reveal-right {
      opacity: 0;
      transform: translateX(30px);
      transition: opacity 0.7s ease, transform 0.7s ease;
    }
    .reveal-fade {
      opacity: 0;
      transition: opacity 0.7s ease;
    }
    .reveal-up.revealed,
    .reveal-left.revealed,
    .reveal-right.revealed,
    .reveal-fade.revealed {
      opacity: 1;
      transform: translate(0, 0);
    }
  }

  /* ── Nav scroll state ── */
  #site-header.scrolled {
    background: rgba(254, 253, 248, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 20px rgba(5, 150, 105, 0.08);
  }

  /* ── Mobile menu animation ── */
  #mobile-menu {
    animation: slideDown 0.3s ease;
  }
  @keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
  }

  .mobile-link {
    display: block;
  }

  /* ── Custom scrollbar ── */
  ::-webkit-scrollbar {
    width: 8px;
  }
  ::-webkit-scrollbar-track {
    background: #fdf9ef;
  }
  ::-webkit-scrollbar-thumb {
    background: #a7f3d0;
    border-radius: 4px;
  }
  ::-webkit-scrollbar-thumb:hover {
    background: #6ee7b7;
  }

  /* ── Selection color ── */
  ::selection {
    background: #d1fae5;
    color: #064e3b;
  }