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

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

  body {
    overflow-x: hidden;
  }

  /* ===== FLOATING ANIMATIONS ===== */
  @keyframes float-slow {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-16px) rotate(1deg); }
  }

  @keyframes float-medium {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-22px) rotate(-1deg); }
  }

  @keyframes float-fast {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-12px) rotate(1.5deg); }
  }

  .animate-float-slow {
    animation: float-slow 5s ease-in-out infinite;
  }

  .animate-float-medium {
    animation: float-medium 4s ease-in-out infinite;
  }

  .animate-float-fast {
    animation: float-fast 3.5s ease-in-out infinite;
  }

  /* ===== SCROLL REVEAL (progressive enhancement) ===== */
  @media (prefers-reduced-motion: no-preference) {
    .reveal {
      opacity: 0;
      transform: translateY(30px);
      transition: opacity 0.7s ease, transform 0.7s ease;
    }

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

    .reveal-delay-1 { transition-delay: 0.1s; }
    .reveal-delay-2 { transition-delay: 0.2s; }
    .reveal-delay-3 { transition-delay: 0.3s; }
    .reveal-delay-4 { transition-delay: 0.4s; }
  }

  /* ===== NAVBAR SCROLLED STATE ===== */
  #navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 20px rgba(15, 21, 48, 0.08);
  }

  #navbar.scrolled .font-display,
  #navbar.scrolled a:not(.bg-midnight-800) {
    color: #0f1530 !important;
  }

  /* ===== MOBILE MENU ===== */
  #mobile-menu {
    animation: slideDown 0.3s ease;
  }

  @keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
  }

  .mobile-link {
    position: relative;
  }

  .mobile-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #5eead4;
    transition: width 0.3s ease;
  }

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

  /* ===== CUSTOM SCROLLBAR ===== */
  ::-webkit-scrollbar {
    width: 8px;
  }

  ::-webkit-scrollbar-track {
    background: #f0fdf9;
  }

  ::-webkit-scrollbar-thumb {
    background: #a0a4d6;
    border-radius: 4px;
  }

  ::-webkit-scrollbar-thumb:hover {
    background: #7a7fc4;
  }

  /* ===== SELECTION ===== */
  ::selection {
    background: #5eead4;
    color: #0f1530;
  }