/* ─── Base & Utilities ─── */
  html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  body {
    overflow-x: hidden;
  }

  ::selection {
    background: rgba(212, 168, 75, 0.2);
    color: #1B3A5C;
  }

  /* ─── Navbar ─── */
  #navbar {
    background: transparent;
    transition: background 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
  }

  #navbar.scrolled {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 1px 20px rgba(27, 58, 92, 0.06);
  }

  .nav-link {
    position: relative;
  }

  .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: #D4A84B;
    transition: width 0.3s ease, left 0.3s ease;
    border-radius: 1px;
  }

  .nav-link:hover::after {
    width: 60%;
    left: 20%;
  }

  /* ─── Mobile menu ─── */
  #mobile-menu {
    animation: slideDown 0.3s ease;
  }

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

  .mobile-link {
    display: block;
    transition: background 0.2s ease;
  }

  /* ─── Hero animations ─── */
  @keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
  }

  .animate-fade-in-up {
    animation: fadeInUp 0.8s ease both;
  }

  .delay-100 { animation-delay: 0.1s; }
  .delay-200 { animation-delay: 0.2s; }
  .delay-300 { animation-delay: 0.3s; }
  .delay-400 { animation-delay: 0.4s; }

  @keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(20px, -20px) scale(1.05); }
    66% { transform: translate(-10px, 15px) scale(0.97); }
  }

  @keyframes floatDelayed {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(-15px, 20px) scale(1.03); }
    66% { transform: translate(25px, -10px) scale(0.98); }
  }

  .animate-float {
    animation: float 8s ease-in-out infinite;
  }

  .animate-float-delayed {
    animation: floatDelayed 10s ease-in-out infinite;
  }

  /* ─── Scroll reveal ─── */
  .reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
  }

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

  /* ─── Service cards ─── */
  .service-card {
    transition: transform 0.4s ease, box-shadow 0.4s ease;
  }

  .service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(27, 58, 92, 0.08);
  }

  /* ─── Custom select arrow ─── */
  select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
  }

  /* ─── Responsive tweaks ─── */
  @media (max-width: 640px) {
    .font-serif {
      line-height: 1.15;
    }
  }

  /* ─── Focus visible ─── */
  :focus-visible {
    outline: 2px solid #D4A84B;
    outline-offset: 2px;
  }

  /* ─── Smooth image loading ─── */
  img {
    background-color: rgb(220, 230, 240);
  }