:root {
  color-scheme: dark;
  --space: #000;
  --focus: rgba(225, 235, 255, .65);
  --ease: cubic-bezier(.22, 1, .36, 1);
  --planet-size: 20.915%;
  --selector-width: 760px;
}

body {
  display: grid;
  min-height: 100svh;
  margin: 0;
  place-items: center;
  overflow: hidden;
  background: var(--space);
}

.selector {
  position: relative;
  width: min(100vw, 153svh, var(--selector-width));
  aspect-ratio: 459 / 300;
  isolation: isolate;
  opacity: 0;
  cursor: grab;
  touch-action: pan-y;
  user-select: none;
  -webkit-user-select: none;
  transition: opacity 420ms var(--ease);
}

.selector.ready {
  opacity: 1;
}

.planet {
  position: absolute;
  top: 42.667%;
  left: 48.802%;
  width: var(--planet-size);
  aspect-ratio: 1;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 50%;
  outline: none;
  background: transparent;
  cursor: pointer;
  transform: translate(-50%, -50%);
  -webkit-tap-highlight-color: transparent;
}

.art {
  position: absolute;
  top: 50%;
  left: 50%;
  display: block;
  width: 100%;
  height: auto;
  max-width: none;
  translate: -50% -50%;
  pointer-events: none;
  transition: scale 220ms var(--ease), opacity 160ms ease;
  animation: float 7s ease-in-out infinite;
}

.ringed .art {
  width: 185%;
}

.planet:nth-child(2n) .art {
  animation-delay: -2.4s;
}

.planet:nth-child(3n) .art {
  animation-delay: -4.7s;
}

.planet[aria-pressed="true"] .art {
  scale: 1.035;
}

.planet::after {
  position: absolute;
  inset: 6%;
  border: 1px solid transparent;
  border-radius: 50%;
  content: "";
  pointer-events: none;
  transition: border-color 180ms ease;
}

.planet:focus-visible::after {
  border-color: var(--focus);
}

@media (hover: hover) {
  .planet:hover .art {
    scale: 1.095;
  }
}

.planet:active .art {
  scale: .97;
}

.planet:disabled {
  cursor: default;
}

.planet:disabled .art {
  opacity: .3;
}

.selector.dragging,
.selector.dragging .planet {
  cursor: grabbing;
}

.selector.dragging .art {
  scale: 1;
}

@keyframes float {
  0%, 100% {
    transform: translateY(-1px) rotate(-1deg);
  }
  50% {
    transform: translateY(1.8px) rotate(1deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .selector,
  .art,
  .planet::after {
    transition: none;
  }

  .art {
    animation: none;
  }
}