/* Base styles & custom utilities */
  html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
  }

  body {
    overflow-x: hidden;
  }

  /* Custom scrollbar */
  ::-webkit-scrollbar {
    width: 8px;
  }
  ::-webkit-scrollbar-track {
    background: #f0f3f9;
  }
  ::-webkit-scrollbar-thumb {
    background: #b8c6e2;
    border-radius: 4px;
  }
  ::-webkit-scrollbar-thumb:hover {
    background: #8fa5d0;
  }

  /* Scroll reveal animations — progressive enhancement */
  @media (prefers-reduced-motion: no-preference) {
    .reveal {
      opacity: 1;
      transform: translateY(0);
      transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
    }
    .reveal.revealed {
      opacity: 1;
      transform: translateY(0);
    }
  }

  /* Navbar scroll state */
  #navbar.scrolled {
    background: rgba(10, 17, 37, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
  }

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

  /* Menu toggle animation */
  #menu-toggle.active .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
  }
  #menu-toggle.active .menu-line:nth-child(2) {
    opacity: 0;
    transform: translateX(10px);
  }
  #menu-toggle.active .menu-line:nth-child(3) {
    width: 6px;
    transform: rotate(-45deg) translate(4px, -4px);
  }

  /* Hero subtle parallax */
  @media (prefers-reduced-motion: no-preference) {
    #top .absolute.inset-0 img {
      will-change: transform;
    }
  }

  /* Card hover lift */
  .reveal {
    opacity: 1;
    transform: translateY(0);
  }
</style>