/* Base styles */
  html {
    scroll-behavior: smooth;
  }

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

  /* Navbar scroll state */
  #navbar.scrolled {
    background: rgba(10, 15, 30, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
  }

  /* Nav link hover underline effect */
  .nav-link {
    position: relative;
  }

  .nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: #4ade80;
    transition: width 0.3s ease;
  }

  .nav-link:hover::after {
    width: 100%;
  }

  /* Scroll reveal animations — progressive enhancement */
  @media (prefers-reduced-motion: no-preference) {
    .reveal {
      opacity: 0;
      transform: translateY(24px);
      transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .reveal.revealed {
      opacity: 1;
      transform: translateY(0);
    }

    .reveal:nth-child(2) { transition-delay: 0.1s; }
    .reveal:nth-child(3) { transition-delay: 0.2s; }
    .reveal:nth-child(4) { transition-delay: 0.3s; }
  }

  /* Fallback: always show content if JS is disabled */
  .reveal {
    opacity: 1;
    transform: none;
  }

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

  /* Mobile menu transitions */
  #mobile-menu {
    animation: slideDown 0.3s ease;
  }

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

  /* Image hover zoom wrapper */
  .aspect-square img,
  .aspect-\[4\/5\] img,
  .aspect-\[4\/3\] iframe {
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  }

  /* Subtle focus styles */
  a:focus-visible,
  button:focus-visible {
    outline: 2px solid #4ade80;
    outline-offset: 2px;
    border-radius: 4px;
  }

  /* Selection color */
  ::selection {
    background: rgba(74, 222, 128, 0.2);
    color: #111827;
  }

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

  ::-webkit-scrollbar-track {
    background: #f0f3f9;
  }

  ::-webkit-scrollbar-thumb {
    background: #b3c2e0;
    border-radius: 4px;
  }

  ::-webkit-scrollbar-thumb:hover {
    background: #8da4d0;
  }