.carousel {
  position: relative;
  flex: 1;
  min-block-size: calc(var(--size-card) * 9 / 16 + 2 * var(--space-10));
  touch-action: pan-y;
}

.carousel__track {
  position: absolute;
  inset: 0;
}

/* Each card's place comes from its slot (carousel-layout.js): which side, how many card widths and
   gaps from the center, and how small and dim it is. */
.card {
  --side: 1;
  --shift: 0;
  --distance: 0;
  --scale: 1;
  --dimming: 1;
  --card-opacity: 1;
  --depth: 4;

  position: absolute;
  inset-block-start: 50%;
  inset-inline-start: 50%;
  z-index: var(--depth);
  display: block;
  inline-size: var(--size-card);
  aspect-ratio: 16 / 9;
  padding: 0;
  margin-block-start: calc(var(--size-card) * -9 / 32);
  margin-inline-start: calc(var(--size-card) / -2);
  color: inherit;
  cursor: pointer;
  background: none;
  border: 0;
  outline: none;
  opacity: var(--card-opacity);
  transform: translateX(
      calc(var(--side) * (var(--size-card) * var(--shift) + var(--distance) * var(--size-card-gap)))
    )
    scale(var(--scale));
  user-select: none;
  -webkit-touch-callout: none;
  transition:
    transform var(--duration-carousel) var(--easing-spring),
    opacity var(--duration-fade) var(--easing-standard);
  animation: card-enter var(--duration-enter) var(--easing-spring) backwards;
  animation-delay: calc(var(--distance) * var(--duration-stagger));
}

.card.is-hidden,
.card.is-leaving {
  pointer-events: none;
}

/* The copy of a card leaving by one side starts where the card stood, not with the page's entrance. */
.card.is-leaving {
  animation: none;
}

.card__ring {
  position: absolute;
  inset: calc(-1 * var(--size-card-ring-gap));
  border: var(--border-width-ring) solid var(--color-card-ring);
  border-radius: var(--radius-card-ring);
  opacity: 0;
  scale: var(--scale-ring-rest);
  transition:
    opacity var(--duration-fade) var(--easing-standard),
    scale var(--duration-ring) var(--easing-spring);
}

.card.is-center .card__ring {
  opacity: 1;
  scale: 1;
}

.card__frame {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background: var(--color-card-blank);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  filter: brightness(calc(1 - (1 - var(--dimming)) * var(--dim-strength)));
  container-type: inline-size;
  transition:
    filter var(--duration-fade) var(--easing-standard),
    scale var(--duration-press) var(--easing-standard);
}

.card__frame::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card-edge);
  pointer-events: none;
}

.card__frame.is-launching,
.tile__frame.is-launching {
  opacity: 0;
  transition: none;
}

@media (hover: hover) {
  .card:not(.is-center):hover .card__frame {
    filter: brightness(
      calc(1 - (1 - var(--dimming)) * var(--dim-strength) + var(--dimming-hover-lift))
    );
  }
}

.card:active .card__frame {
  scale: var(--scale-pressed);
  transition-duration: var(--duration-fast);
}

.art {
  display: block;
  inline-size: 100%;
  block-size: 100%;
  object-fit: cover;
  image-rendering: pixelated;
}

.art.is-smooth {
  image-rendering: auto;
}

.art--monogram {
  display: grid;
  place-items: center;
  font-size: var(--font-size-monogram);
  font-weight: var(--font-weight-semibold);
  line-height: var(--leading-none);
  color: var(--color-label);
  background: linear-gradient(
    to bottom,
    var(--color-card-monogram-top),
    var(--color-card-monogram-bottom)
  );
}

/* A teaser: a dark slate with a slow sheen passing over it, waiting for a game. */
.art--soon {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(to bottom, var(--color-soon-top), var(--color-soon-bottom));
}

.art--soon::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    var(--color-clear) 35%,
    var(--color-soon-sheen) 50%,
    var(--color-clear) 65%
  );
  translate: -100% 0;
  animation: sheen var(--duration-sheen) var(--easing-gentle) infinite;
}

.art__glyph {
  inline-size: var(--size-soon-glyph);
  block-size: var(--size-soon-glyph);
  fill: var(--color-soon-glyph);
}

.art__label {
  font-size: var(--font-size-soon);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--tracking-tight);
  color: var(--color-soon-label);
}

.carousel__arrow {
  position: absolute;
  inset-block-start: 50%;
  z-index: var(--layer-arrows);
  inline-size: var(--size-carousel-arrow);
  block-size: var(--size-carousel-arrow);
  translate: 0 -50%;
}

.carousel__arrow--previous {
  inset-inline-start: max(var(--space-gutter), env(safe-area-inset-left));
}

.carousel__arrow--next {
  inset-inline-end: max(var(--space-gutter), env(safe-area-inset-right));
}

/* Phones swipe the carousel, and the round arrows would sit on the center card's ring. */
@media (hover: none) and (pointer: coarse) {
  .carousel__arrow {
    display: none;
  }
}

@keyframes sheen {
  60%,
  100% {
    translate: 100% 0;
  }
}

@keyframes card-enter {
  from {
    opacity: 0;
    translate: 0 var(--offset-card-enter);
  }
}

@media (prefers-reduced-motion: reduce) {
  .card,
  .card__ring,
  .card__frame,
  .art--soon::after {
    transition: none;
    animation: none;
  }
}