/* ── Base ── */
  *, *::before, *::after { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body { margin: 0; -webkit-font-smoothing: antialiased; }

  /* ── Selection ── */
  ::selection { background: rgba(74, 222, 128, 0.3); color: #f0fdf4; }

  /* ── Scrollbar ── */
  ::-webkit-scrollbar { width: 8px; }
  ::-webkit-scrollbar-track { background: #0a1628; }
  ::-webkit-scrollbar-thumb { background: #243b53; border-radius: 4px; }
  ::-webkit-scrollbar-thumb:hover { background: #334e68; }

  /* ── Float animations (hero cards) ── */
  @keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
  }
  @keyframes float-delayed {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
  }
  .animate-float { animation: float 4s ease-in-out infinite; }
  .animate-float-delayed { animation: float-delayed 4s ease-in-out infinite 1s; }

  /* ── Scroll reveal ── */
  .scroll-reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }
  @media (prefers-reduced-motion: no-preference) {
    .scroll-reveal {
      opacity: 0;
      transform: translateY(24px);
    }
    .scroll-reveal.revealed {
      opacity: 1;
      transform: translateY(0);
    }
  }

  /* ── No-underline helper ── */
  a.no-underline { text-decoration: none; }

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