/**
 * The fixed ice scene behind every screen: a navy (or pale) base, four slow
 * drifting glacier blobs, glossy ice orbs and a whisper of grain. Purely
 * decorative — it never intercepts pointer events, and the drift stops under
 * `prefers-reduced-motion`.
 */
export function IceBackdrop() {
  return (
    <div className="ice-scene" aria-hidden>
      <span className="ice-blob ice-blob-a" />
      <span className="ice-blob ice-blob-b" />
      <span className="ice-blob ice-blob-c" />
      <span className="ice-blob ice-blob-d" />
      <span className="ice-orb ice-orb-1" />
      <span className="ice-orb ice-orb-2" />
      <span className="ice-orb ice-orb-3" />
      <span className="ice-orb ice-orb-4" />
      <span className="ice-orb ice-orb-5" />
      <span className="ice-grain" />
    </div>
  );
}