/* ─── Reset & Base ─── */
  *, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  body {
    overflow-x: hidden;
  }

  ::selection {
    background: rgba(43, 175, 124, 0.2);
    color: #0A1628;
  }

  /* ─── Scroll Animations ─── */
  .scroll-animate {
    opacity: 1;
    transform: translateY(0);
    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);
  }

  @media (prefers-reduced-motion: no-preference) {
    .scroll-animate {
      opacity: 0;
      transform: translateY(24px);
    }

    .scroll-animate.visible {
      opacity: 1;
      transform: translateY(0);
    }
  }

  /* Staggered delays */
  .scroll-animate:nth-child(1) { transition-delay: 0ms; }
  .scroll-animate:nth-child(2) { transition-delay: 100ms; }
  .scroll-animate:nth-child(3) { transition-delay: 200ms; }
  .scroll-animate:nth-child(4) { transition-delay: 300ms; }
  .scroll-animate:nth-child(5) { transition-delay: 400ms; }
  .scroll-animate:nth-child(6) { transition-delay: 500ms; }

  /* ─── Navbar Scroll State ─── */
  #navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(10, 22, 40, 0.06);
  }

  #navbar.scrolled .nav-link {
    color: #0A1628;
  }

  /* ─── Mobile Menu Animations ─── */
  #mobile-menu.open {
    opacity: 1;
    pointer-events: all;
  }

  #mobile-menu .mobile-nav-link {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.4s ease, transform 0.4s ease, color 0.3s ease;
  }

  #mobile-menu.open .mobile-nav-link {
    opacity: 1;
    transform: translateY(0);
  }

  #mobile-menu.open .mobile-nav-link:nth-child(1) { transition-delay: 0.05s; }
  #mobile-menu.open .mobile-nav-link:nth-child(2) { transition-delay: 0.1s; }
  #mobile-menu.open .mobile-nav-link:nth-child(3) { transition-delay: 0.15s; }
  #mobile-menu.open .mobile-nav-link:nth-child(4) { transition-delay: 0.2s; }

  /* ─── Mobile Menu Button ─── */
  #menu-btn.active .menu-line:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  #menu-btn.active .menu-line:nth-child(2) {
    opacity: 0;
  }

  #menu-btn.active .menu-line:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
    width: 1.25rem;
  }

  /* ─── 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='1.5' 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;
  }

  /* ─── Utility ─── */
  .nav-link {
    position: relative;
  }

  .nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: #2BAF7C;
    transition: width 0.3s ease;
  }

  .nav-link:hover::after {
    width: 100%;
  }

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

  /* ─── Smooth image loading ─── */
  img {
    display: block;
    max-width: 100%;
  }

  /* ─── Print ─── */
  @media print {
    #navbar, #menu-btn, .scroll-animate { display: none; }
    body { color: #000; background: #fff; }
  }