*, *::before, *::after {
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  body {
    overflow-x: hidden;
  }

  /* Scroll reveal — progressive enhancement, hidden by default, revealed by JS */
  @media (prefers-reduced-motion: no-preference) {
    .reveal {
      opacity: 0;
      transform: translateY(24px);
      transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }
    .reveal.revealed {
      opacity: 1;
      transform: translateY(0);
    }
  }

  /* Fallback: always visible if JS is disabled */
  .reveal {
    opacity: 1;
    transform: none;
  }
  @media (prefers-reduced-motion: no-preference) {
    .reveal {
      opacity: 0;
      transform: translateY(24px);
    }
  }

  /* Navbar scroll state */
  #navbar.scrolled {
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(255,255,255,0.05);
  }

  /* Scroll indicator animation */
  @keyframes scrollBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(6px); }
  }
  .scroll-indicator svg {
    animation: scrollBounce 2s ease-in-out infinite;
  }

  /* Mobile menu transitions */
  #mobile-menu.open {
    opacity: 1;
    pointer-events: all;
  }

  /* Input focus styles */
  input:focus, textarea:focus {
    outline: none;
  }

  /* Selection color */
  ::selection {
    background: rgba(201, 168, 76, 0.2);
    color: #0a1628;
  }

  /* Custom scrollbar */
  ::-webkit-scrollbar {
    width: 6px;
  }
  ::-webkit-scrollbar-track {
    background: #0a1628;
  }
  ::-webkit-scrollbar-thumb {
    background: rgba(201, 168, 76, 0.4);
    border-radius: 3px;
  }
  ::-webkit-scrollbar-thumb:hover {
    background: rgba(201, 168, 76, 0.6);
  }

  /* Light theme scrollbar */
  body:not(#hero) ::-webkit-scrollbar-track {
    background: #f5f5f5;
  }