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

  html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
  }

  body {
    overflow-x: hidden;
  }

  /* Scroll reveal — progressive enhancement, hidden by default */
  .reveal {
    opacity: 0;
    transform: translateY(24px);
    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);
  }

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

  /* Mobile menu open state */
  #mobile-menu.open {
    translate: 0;
  }

  /* Navigation transitions */
  .nav-text {
    color: #0F2140;
  }

  .nav-subtext {
    color: #214788;
  }

  .nav-link {
    color: #0F2140;
  }

  .nav-link:hover {
    color: #1D8A62;
  }

  /* Scrolled nav state */
  #nav.scrolled .nav-text {
    color: #0A1628;
  }

  #nav.scrolled .nav-subtext {
    color: #214788;
  }

  #nav.scrolled .nav-link {
    color: #0F2140;
  }

  #nav.scrolled .nav-link:hover {
    color: #1D8A62;
  }

  /* Hero nav state (light text) */
  #nav.hero-visible .nav-text {
    color: #F0FAF6;
  }

  #nav.hero-visible .nav-subtext {
    color: rgba(240, 250, 246, 0.6);
  }

  #nav.hero-visible .nav-link {
    color: rgba(240, 250, 246, 0.85);
  }

  #nav.hero-visible .nav-link:hover {
    color: #4CC79A;
  }

  #nav.hero-visible .nav-btn .nav-line-1,
  #nav.hero-visible .nav-btn .nav-line-2 {
    background-color: #F0FAF6;
  }

  #nav.scrolled .nav-btn .nav-line-1,
  #nav.scrolled .nav-btn .nav-line-2 {
    background-color: #0F2140;
  }

  /* Mobile menu button */
  #menu-btn.open .nav-line-1 {
    transform: translateY(5px) rotate(45deg);
    background-color: #0F2140 !important;
  }

  #menu-btn.open .nav-line-2 {
    transform: translateY(-5px) rotate(-45deg);
    background-color: #0F2140 !important;
  }

  /* Mobile links */
  .mobile-link {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.3s ease, transform 0.3s ease;
  }

  #mobile-menu.open .mobile-link {
    opacity: 1;
    transform: translateY(0);
  }

  #mobile-menu.open .mobile-link:nth-child(1) { transition-delay: 0.1s; }
  #mobile-menu.open .mobile-link:nth-child(2) { transition-delay: 0.15s; }
  #mobile-menu.open .mobile-link:nth-child(3) { transition-delay: 0.2s; }
  #mobile-menu.open .mobile-link:nth-child(4) { transition-delay: 0.25s; }
  #mobile-menu.open .mobile-link:nth-child(6) { transition-delay: 0.3s; }

  /* Selection color */
  ::selection {
    background: rgba(76, 199, 154, 0.25);
    color: #0A1628;
  }

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

  ::-webkit-scrollbar-track {
    background: #0A1628;
  }

  ::-webkit-scrollbar-thumb {
    background: #1B3A70;
    border-radius: 4px;
  }

  ::-webkit-scrollbar-thumb:hover {
    background: #214788;
  }

  /* Focus styles */
  a:focus-visible,
  button:focus-visible,
  input:focus-visible,
  textarea:focus-visible {
    outline: 2px solid #4CC79A;
    outline-offset: 2px;
  }