/* Base & Utilities */
  html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  body {
    overflow-x: hidden;
  }

  ::selection {
    background: #0d9488;
    color: white;
  }

  /* Scroll Reveal Animations */
  .reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .reveal[data-reveal-state="hidden"] {
    opacity: 0;
    transform: translateY(30px);
  }

  /* Card Hover */
  .card-hover {
    opacity: 1;
    transform: translateY(0);
  }

  .card-hover[data-reveal-state="hidden"] {
    opacity: 0;
    transform: translateY(30px);
  }

  /* Navbar Scroll State */
  #navbar.scrolled {
    background: rgba(10, 15, 26, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06);
  }

  /* Mobile Menu */
  #mobileMenu.open {
    opacity: 1;
    pointer-events: all;
  }

  #mobileMenu:not(.open) {
    opacity: 0;
    pointer-events: none;
  }

  .mobile-link {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.4s ease, transform 0.4s ease, color 0.3s ease;
  }

  #mobileMenu:not(.open) .mobile-link {
    opacity: 0;
    transform: translateY(12px);
  }

  /* Custom Select Arrow */
  select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' 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;
  }

  /* Smooth focus */
  input:focus, textarea:focus, select:focus {
    outline: none;
  }

  /* Image loading placeholder */
  img {
    background-color: #f1f5f9;
  }

  /* Reduced motion */
  @media (prefers-reduced-motion: reduce) {
    html {
      scroll-behavior: auto;
    }

    .reveal, .card-hover {
      opacity: 1;
      transform: none;
      transition: none;
    }

    #mobileMenu .mobile-link {
      opacity: 1;
      transform: none;
      transition: color 0.3s ease;
    }
  }

  /* Print */
  @media print {
    #navbar, #contactForm, #formSuccess {
      display: none;
    }

    body {
      color: #000;
      background: white;
    }
  }