*, *::before, *::after {
    box-sizing: border-box;
  }

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

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

  /* ─── NAVBAR ─── */
  #navbar {
    background: transparent;
    transition: background 0.3s ease, box-shadow 0.3s ease, backdrop-filter 0.3s ease;
  }

  #navbar.scrolled {
    background: rgba(5, 13, 26, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 1px 0 rgba(255,255,255,0.06);
  }

  /* ─── MOBILE MENU ─── */
  #mobile-menu {
    animation: slideDown 0.25s ease;
  }

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

  .mobile-link {
    display: block;
    padding: 0.5rem 0;
    font-size: 1rem;
  }

  /* ─── HERO GEOMETRIC SHAPES ─── */
  .geo-shape {
    position: absolute;
    opacity: 0.08;
    pointer-events: none;
  }

  .circle-1 {
    top: 10%;
    right: 5%;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    border: 3px solid #34d4a8;
    animation: float-slow 18s ease-in-out infinite;
  }

  .circle-2 {
    bottom: 15%;
    left: 3%;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: #34d4a8;
    animation: float-slow 14s ease-in-out infinite reverse;
  }

  .triangle-1 {
    top: 25%;
    left: 8%;
    width: 0;
    height: 0;
    border-left: 60px solid transparent;
    border-right: 60px solid transparent;
    border-bottom: 104px solid #34d4a8;
    opacity: 0.06;
    animation: spin-slow 25s linear infinite;
  }

  .triangle-2 {
    bottom: 30%;
    right: 10%;
    width: 0;
    height: 0;
    border-left: 40px solid transparent;
    border-right: 40px solid transparent;
    border-bottom: 70px solid #60a5fa;
    opacity: 0.07;
    animation: spin-slow 20s linear infinite reverse;
  }

  .rect-1 {
    top: 60%;
    right: 20%;
    width: 80px;
    height: 80px;
    background: #34d4a8;
    opacity: 0.05;
    transform: rotate(45deg);
    animation: float-slow 12s ease-in-out infinite;
  }

  .circle-3 {
    top: 45%;
    left: 15%;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: 2px solid #60a5fa;
    opacity: 0.06;
    animation: float-slow 16s ease-in-out infinite reverse;
  }

  @keyframes float-slow {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(3deg); }
  }

  @keyframes spin-slow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
  }

  /* ─── SERVICE CARDS ─── */
  .service-card {
    position: relative;
    overflow: hidden;
  }

  .service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #34d4a8, #60a5fa);
    opacity: 0;
    transition: opacity 0.3s ease;
  }

  .service-card:hover::before {
    opacity: 1;
  }

  /* ─── REASON CARDS ─── */
  .reason-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }

  .reason-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
  }

  /* ─── SCROLL REVEAL (progressive enhancement) ─── */
  @media (prefers-reduced-motion: no-preference) {
    .reveal {
      opacity: 0;
      transform: translateY(24px);
      transition: opacity 0.6s ease, transform 0.6s ease;
    }

    .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; }
  }

  /* ─── SELECT STYLING ─── */
  select option {
    background: #0a1628;
    color: #e2e8f0;
  }

  /* ─── CUSTOM SCROLLBAR ─── */
  ::-webkit-scrollbar {
    width: 8px;
  }
  ::-webkit-scrollbar-track {
    background: #050d1a;
  }
  ::-webkit-scrollbar-thumb {
    background: #1e3a5f;
    border-radius: 4px;
  }
  ::-webkit-scrollbar-thumb:hover {
    background: #34d4a8;
  }