/* ===== BASE ===== */
  *, *::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; }

  /* ===== NAVBAR ===== */
  #navbar { background: transparent; }
  #navbar.scrolled {
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(12,31,58,0.08);
  }
  #navbar.scrolled .nav-link { color: #0c1f3a; }
  #navbar.scrolled .nav-link:hover { color: #0c1f3a; background: rgba(12,31,58,0.05); }
  #navbar.scrolled .logo-text { color: #0c1f3a; }
  #navbar.scrolled .menu-line { background: #0c1f3a; }

  /* ===== MOBILE MENU ===== */
  #mobile-menu.open { opacity: 1; pointer-events: auto; }
  .mobile-link { transition: opacity 0.3s ease; }
  .mobile-link:hover { opacity: 0.7; }

  /* ===== SERVICE CARDS ===== */
  .service-card { border: 1px solid rgba(12,31,58,0.08); }
  .service-card:hover { border-color: rgba(94,234,212,0.3); }

  /* ===== GALLERY ===== */
  .gallery-item { cursor: pointer; }
  .gallery-item:hover img { transform: scale(1.05); }

  /* ===== SCROLL REVEAL ===== */
  @media (prefers-reduced-motion: no-preference) {
    .reveal {
      opacity: 0;
      transform: translateY(30px);
      transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
    }
    .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; }
    .reveal-delay-5 { transition-delay: 0.5s; }
  }

  /* ===== MOBILE MENU ANIMATION ===== */
  .menu-btn.active .menu-line:nth-child(1) { transform: translateY(4px) rotate(45deg); }
  .menu-btn.active .menu-line:nth-child(2) { opacity: 0; transform: scaleX(0); }
  .menu-btn.active .menu-line:nth-child(3) { transform: translateY(-4px) rotate(-45deg); }

  /* ===== SMOOTH HOVER TRANSITIONS ===== */
  a, button { transition: all 0.2s ease; }

  /* ===== CUSTOM SCROLLBAR ===== */
  ::-webkit-scrollbar { width: 8px; }
  ::-webkit-scrollbar-track { background: #f0f4f8; }
  ::-webkit-scrollbar-thumb { background: #abc0d9; border-radius: 4px; }
  ::-webkit-scrollbar-thumb:hover { background: #819fc6; }

  /* ===== FOCUS STYLES ===== */
  a:focus-visible, button:focus-visible {
    outline: 2px solid #5eead4;
    outline-offset: 2px;
    border-radius: 4px;
  }