.sea-water {
  position: absolute;
  z-index: 0;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  visibility: hidden;
}

.sea-scene.is-water-ready {
  background: var(--sea-photo), #07172a;
}

.sea-scene.is-water-ready .sea-water { visibility: visible; }

.sea-scene.is-water-ready::before {
  position: absolute;
  z-index: 1;
  inset: 0;
  background: var(--sea-shade);
  content: "";
}

.sea-scene.is-water-ready .sea-ship { z-index: 2; }

@media (prefers-reduced-motion: reduce) {
  .sea-scene.is-water-ready { background: var(--sea-shade), var(--sea-photo), #07172a; }
  .sea-scene.is-water-ready .sea-water { visibility: hidden; }
  .sea-scene.is-water-ready::before { display: none; }
}