/* Base & Utilities */
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }

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

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

  ::selection {
    background: rgba(4, 120, 87, 0.2);
    color: #047857;
  }

  /* Navbar */
  #nav.scrolled {
    background: rgba(2, 44, 34, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
  }

  /* Service Cards */
  .service-card {
    transform: translateY(0);
  }

  .service-card:hover {
    transform: translateY(-4px);
  }

  /* Gallery */
  .gallery-item {
    cursor: pointer;
  }

  .gallery-item:hover img {
    transform: scale(1.08);
  }

  /* Scroll Reveal (progressive enhancement — content visible without JS) */
  @media (prefers-reduced-motion: no-preference) {
    .reveal {
      opacity: 0;
      transform: translateY(24px);
      transition: opacity 0.7s ease, transform 0.7s 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; }
    .reveal-delay-5 { transition-delay: 0.5s; }
    .reveal-delay-6 { transition-delay: 0.6s; }
  }

  /* Mobile menu transitions */
  #mobileMenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
  }

  #mobileMenu.open {
    max-height: 400px;
    padding-top: 0;
  }

  /* Focus styles */
  a:focus-visible,
  button:focus-visible,
  input:focus-visible,
  textarea:focus-visible,
  select:focus-visible {
    outline: 2px solid #10b981;
    outline-offset: 2px;
    border-radius: 4px;
  }

  /* Custom scrollbar */
  ::-webkit-scrollbar {
    width: 8px;
  }

  ::-webkit-scrollbar-track {
    background: #064e3b;
  }

  ::-webkit-scrollbar-thumb {
    background: #047857;
    border-radius: 4px;
  }

  ::-webkit-scrollbar-thumb:hover {
    background: #10b981;
  }