/* Smooth scrolling */
  html {
    scroll-behavior: smooth;
  }

  /* Scroll reveal base — content is visible by default for no-JS / reduced-motion */
  .scroll-reveal {
    opacity: 1;
    transform: none;
    transition: opacity 0.6s ease, transform 0.6s ease;
  }

  @media (prefers-reduced-motion: no-preference) {
    .scroll-reveal {
      opacity: 0;
      transform: translateY(24px);
    }
    .scroll-reveal.revealed {
      opacity: 1;
      transform: translateY(0);
    }
  }

  /* Nav scroll state */
  nav.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06), 0 4px 20px rgba(0, 0, 0, 0.04);
  }

  /* Mobile menu transitions */
  #mobileMenu {
    animation: slideDown 0.2s ease;
  }

  @keyframes slideDown {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
  }

  /* Custom scrollbar */
  ::-webkit-scrollbar {
    width: 8px;
  }
  ::-webkit-scrollbar-track {
    background: #f8fafc;
  }
  ::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
  }
  ::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
  }

  /* Selection color */
  ::selection {
    background: #99f6e4;
    color: #134e4a;
  }