*, *::before, *::after { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body { margin: 0; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

  /* Scroll reveal — progressive enhancement, only active when JS is available */
  .scroll-reveal {
    opacity: 1;
    transform: none;
    transition: opacity 0.6s ease, transform 0.6s ease;
  }
  @media (prefers-reduced-motion: no-preference) {
    .scroll-reveal[data-revealed="false"] {
      opacity: 0;
      transform: translateY(32px);
    }
    .scroll-reveal[data-revealed="true"] {
      opacity: 1;
      transform: translateY(0);
    }
  }

  /* Mobile menu transitions */
  #mobile-menu.open {
    opacity: 1;
    pointer-events: auto;
  }
  #mobile-menu.closed {
    opacity: 0;
    pointer-events: none;
  }

  /* Header scroll state */
  #site-header.scrolled {
    background: rgba(13, 20, 74, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(255,255,255,0.06);
  }

  /* Geometric decorations */
  .geo-dots {
    background-image: radial-gradient(circle, currentColor 1px, transparent 1px);
    background-size: 24px 24px;
    opacity: 0.15;
  }

  /* Custom scrollbar */
  ::-webkit-scrollbar { width: 8px; }
  ::-webkit-scrollbar-track { background: #0d144a; }
  ::-webkit-scrollbar-thumb { background: #19c28b; border-radius: 4px; }
  ::-webkit-scrollbar-thumb:hover { background: #38ce9d; }
</style>