body {
  background: linear-gradient(
    135deg,
    #fde4f5 0%,
    #e8d5ff 15%,
    #d0e8ff 30%,
    #d0ffe8 45%,
    #fffacc 60%,
    #ffe0cc 75%,
    #ffd0e8 90%,
    #fde4f5 100%
  );
  background-size: 150% 150%;
  animation: rainbowShift 18s ease infinite;
  min-height: 100vh;
}
@media (prefers-color-scheme: dark) {
  body {
    background: linear-gradient(
      135deg,
      #3d2435 0%,
      #28153f 15%,
      #10283f 30%,
      #103f28 45%,
      #2f3a0c 60%,
      #3f200c 75%,
      #3f1028 90%,
      #3d2435 100%
    );
  }
}