:root {
  --bg-dark-url: url('https://i.pinimg.com/originals/ec/60/47/ec6047e888811f61cc4b896a4c3dd22e.gif');
  --bg-light-url: url('https://i.pinimg.com/originals/a5/43/0d/a5430d131e591c8ac612d13e7b9556f8.gif');
  --text-color: #fff;
  --bg-color: rgba(0, 0, 0, 0.85);
  --card-bg: #000;
  --link-color: #fff;
  --highlight: #ff7f50;
}

body.light {
  --bg-dark-url: var(--bg-light-url);
  --text-color: #000;
  --bg-color: rgba(255, 255, 255, 0.85);
  --card-bg: #f0f0f0;
  --link-color: #000;
}