/* ===== Base & Utilities ===== */
  *, *::before, *::after {
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
  }

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

  /* ===== Animations ===== */
  @keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
  }

  @keyframes float-delayed {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
  }

  @keyframes scroll-line {
    0% { opacity: 0; transform: scaleY(0); transform-origin: top; }
    50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
    51% { transform-origin: bottom; }
    100% { opacity: 0; transform: scaleY(0); transform-origin: bottom; }
  }

  @keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
  }

  @keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
  }

  .animate-float {
    animation: float 4s ease-in-out infinite;
  }

  .animate-float-delayed {
    animation: float-delayed 5s ease-in-out infinite;
    animation-delay: 1s;
  }

  .animate-scroll-line {
    animation: scroll-line 2s ease-in-out infinite;
  }

  /* ===== Scroll Reveal ===== */
  .reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  }

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

  .reveal-delay-1 { transition-delay: 0.1s; }
  .reveal-delay-2 { transition-delay: 0.2s; }
  .reveal-delay-3 { transition-delay: 0.3s; }
  .reveal-delay-4 { transition-delay: 0.4s; }

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

  #navbar.scrolled {
    background: rgba(253, 249, 243, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 20px rgba(19, 39, 64, 0.08);
  }

  /* ===== Nav Links ===== */
  .nav-link {
    position: relative;
  }

  .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #b8860b, #e8ab2e);
    border-radius: 1px;
    transition: width 0.3s ease, left 0.3s ease;
  }

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

  /* ===== Mobile Menu ===== */
  #mobile-menu {
    animation: fadeIn 0.3s ease;
  }

  .mobile-link {
    border-radius: 0.75rem;
    transition: all 0.2s ease;
  }

  /* ===== Section Headers ===== */
  .section-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  /* ===== Buttons ===== */
  .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 9999px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
  }

  .btn-primary:hover {
    transform: translateY(-2px);
  }

  /* ===== Cards ===== */
  .card-hover {
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  }

  .card-hover:hover {
    transform: translateY(-4px);
  }

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

  ::-webkit-scrollbar-track {
    background: #fdf9f3;
  }

  ::-webkit-scrollbar-thumb {
    background: #d9e0ef;
    border-radius: 4px;
  }

  ::-webkit-scrollbar-thumb:hover {
    background: #b3c2df;
  }

  /* ===== Selection ===== */
  ::selection {
    background: #f9edc4;
    color: #1c3553;
  }

  /* ===== Responsive tweaks ===== */
  @media (max-width: 767px) {
    html {
      scroll-padding-top: 70px;
    }

    #hero h1 {
      font-size: 2.75rem;
      line-height: 1.1;
    }

    .floating-card {
      position: relative;
      margin-top: 1rem;
    }
  }

  @media (min-width: 768px) and (max-width: 1023px) {
    #hero h1 {
      font-size: 3.5rem;
    }
  }

  /* ===== Print ===== */
  @media print {
    nav, .animate-float, .animate-float-delayed, .animate-scroll-line {
      display: none !important;
    }

    body {
      color: #000;
      background: #fff;
    }
  }