/* ===== BASE & RESET ===== */
  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; scroll-padding-top: 80px; }
  body { overflow-x: hidden; }

  /* ===== SCROLL REVEAL ===== */
  .reveal {
    opacity: 1;
    transform: none;
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
  }

  @media (prefers-reduced-motion: no-preference) {
    .reveal {
      opacity: 0;
      transform: translateY(32px);
    }
    .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 ===== */
  #site-header {
    background: transparent;
  }
  #site-header.scrolled {
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
  }
  #site-header.scrolled #nav-logo-text,
  #site-header.scrolled .nav-link {
    color: #1e293b;
  }
  #site-header.scrolled #nav-logo-sub {
    color: #64748b;
  }

  /* ===== MOBILE MENU ===== */
  #mobile-menu {
    box-shadow: none;
  }
  #mobile-menu.open {
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  }

  /* ===== HERO ===== */
  .hero-overlay {
    background: linear-gradient(135deg, rgba(2, 6, 23, 0.92) 0%, rgba(4, 47, 46, 0.85) 50%, rgba(15, 23, 42, 0.70) 100%);
  }

  /* ===== BUTTONS ===== */
  a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
    outline: 2px solid #0d9488;
    outline-offset: 2px;
    border-radius: 4px;
  }

  /* ===== SELECTION ===== */
  ::selection {
    background: rgba(13, 148, 136, 0.2);
    color: #0f766e;
  }

  /* ===== SCROLLBAR ===== */
  ::-webkit-scrollbar { width: 8px; }
  ::-webkit-scrollbar-track { background: #f1f5f9; }
  ::-webkit-scrollbar-thumb { background: #94a3b8; border-radius: 4px; }
  ::-webkit-scrollbar-thumb:hover { background: #64748b; }

  /* ===== CARDS ===== */
  .service-card {
    transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.4s ease;
  }
  .service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.12);
  }

  /* ===== FORM ===== */
  input, select, textarea {
    font-family: inherit;
  }

  /* ===== DIVIDER ===== */
  .section-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(13, 148, 136, 0.3), transparent);
  }

  /* ===== COUNTER ANIMATION ===== */
  .stat-number {
    display: inline-block;
  }