*, *::before, *::after { box-sizing: border-box; }
  html { scroll-behavior: smooth; scroll-padding-top: 80px; }
  body { overflow-x: hidden; }
  img { max-width: 100%; height: auto; }

  /* Reveal animations */
  .reveal-up, .reveal-left, .reveal-right {
    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-left { transform: translateX(-30px); }
  .reveal-right { transform: translateX(30px); }
  .reveal-visible { opacity: 1; transform: translate(0, 0); }

  /* Service cards */
  .service-card {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    border: 1px solid #f1f5f9;
    transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.3s ease, border-color 0.3s ease;
  }
  .service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.06);
    border-color: #99f6e4;
  }

  /* Nav active state */
  .nav-link.active { color: #0d9488; }

  /* Mobile menu */
  #mobile-menu { animation: slideDown 0.25s ease; }
  @keyframes slideDown {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
  }

  /* Subtle line decorations */
  .thin-line { height: 1px; background: linear-gradient(90deg, transparent, #cbd5e1, transparent); }

  /* Focus styles */
  a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
    outline: 2px solid #0d9488;
    outline-offset: 2px;
  }

  /* Selection */
  ::selection { background: #ccfbf1; color: #134e4a; }