body {
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background: var(--page-background) center center / cover no-repeat;
}

@media screen and (prefers-color-scheme: dark) {
  body {
    backdrop-filter: invert(0.8) hue-rotate(180deg);
  }
}

.cube {
  width: var(--cube-size);
  height: var(--cube-size);
  position: relative;
  transform-style: preserve-3d;
  animation: rotate 5s infinite linear;
  image-rendering: pixelated;
  cursor: pointer;
}

.face {
  position: absolute;
  width: var(--cube-size);
  height: var(--cube-size);
  background-image: var(--face-background);
  background-size: 100% 100%;
}

.front {
  transform: rotateY(0deg) translateZ(calc(var(--cube-size) / 2));
}

.back {
  transform: rotateY(180deg) translateZ(calc(var(--cube-size) / 2));
}

.right {
  transform: rotateY(90deg) translateZ(calc(var(--cube-size) / 2));
}

.left {
  transform: rotateY(-90deg) translateZ(calc(var(--cube-size) / 2));
}

.top {
  transform: rotateX(90deg) translateZ(calc(var(--cube-size) / 2));
}

.bottom {
  transform: rotateX(-90deg) translateZ(calc(var(--cube-size) / 2));
}

@keyframes rotate {
  from {
    transform: rotateX(0) rotateY(0);
  }

  to {
    transform: rotateX(360deg) rotateY(360deg);
  }
}