/* ─── Base & Utilities ─── */
  *, *::before, *::after { box-sizing: border-box; }
  html { scroll-behavior: smooth; scroll-padding-top: 80px; }
  body { overflow-x: hidden; }

  /* ─── Scroll Reveal ─── */
  @media (prefers-reduced-motion: no-preference) {
    .reveal {
      opacity: 0;
      transform: translateY(30px);
      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);
    }
  }
  @media (prefers-reduced-motion: reduce) {
    .reveal { opacity: 1; transform: none; }
  }

  /* ─── Navbar ─── */
  #navbar {
    background: rgba(255, 255, 255, 0.0);
    backdrop-filter: none;
    border-bottom: 1px solid transparent;
    transition: background 0.4s ease, backdrop-filter 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
  }
  #navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.06);
  }

  /* ─── Mobile Menu ─── */
  #mobileMenu.open { transform: translateX(0); }

  /* ─── Custom Scrollbar ─── */
  ::-webkit-scrollbar { width: 8px; }
  ::-webkit-scrollbar-track { background: #f6f6f6; }
  ::-webkit-scrollbar-thumb { background: #d1d1d1; border-radius: 4px; }
  ::-webkit-scrollbar-thumb:hover { background: #a0a0a0; }

  /* ─── Selection ─── */
  ::selection { background: #fce4de; color: #2e2e2e; }

  /* ─── Image Placeholder Fallback ─── */
  img { background: linear-gradient(135deg, #fce4de 0%, #eef0ea 100%); }

  /* ─── Smooth anchor offset for fixed header ─── */
  section[id] { scroll-margin-top: 80px; }