/**
 * A5.6 — Carousel (plain CSS, --canvas-* tokens).
 * Native scroll-snap; prev/next chrome beside track (not over slides).
 */

.canvas-carousel {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-areas:
    "prev track next"
    "status status status";
  align-items: center;
  gap: var(--canvas-space-s);
  box-sizing: border-box;
  min-width: 0;
  container-type: inline-size;
}

.canvas-carousel__track {
  grid-area: track;
  display: flex;
  flex-direction: row;
  gap: var(--canvas-space-m);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
  outline: none;
  padding-block: var(--canvas-space-xs);
  min-width: 0;
}

.canvas-carousel__track::-webkit-scrollbar {
  display: none;
}

.canvas-carousel[data-reduced-motion="true"] .canvas-carousel__track,
.canvas-carousel--reduced-motion .canvas-carousel__track {
  scroll-behavior: auto;
}

.canvas-carousel__slide {
  box-sizing: border-box;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  flex: 0 0 min(280px, 85%);
  display: flex;
  flex-direction: column;
  gap: var(--canvas-space-m);
  padding: var(--canvas-space-m);
  border-radius: var(--canvas-radius-2xl);
  background: var(--canvas-surface-raised, var(--canvas-surface-background));
  border: 1px solid var(--canvas-border-default);
  color: var(--canvas-text-primary);
  min-height: var(--canvas-touch-target-min, 44px);
}

.canvas-carousel--sunk .canvas-carousel__slide {
  background: var(--canvas-surface-sunken, var(--canvas-surface-subtle, var(--canvas-surface-background)));
}

.canvas-carousel__btn {
  position: static;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: var(--canvas-touch-target-min, 44px);
  min-height: var(--canvas-touch-target-min, 44px);
  padding: var(--canvas-space-xs);
  border-radius: var(--canvas-radius-s);
  border: 1px solid var(--canvas-border-default);
  background: var(--canvas-surface-raised, var(--canvas-surface-background));
  color: var(--canvas-text-primary);
  cursor: pointer;
  font-size: 1.25rem;
  line-height: 1;
  transform: none;
}

.canvas-carousel__btn:disabled,
.canvas-carousel__btn[disabled] {
  opacity: 0.4;
  cursor: not-allowed;
}

.canvas-carousel__btn--prev {
  grid-area: prev;
}

.canvas-carousel__btn--next {
  grid-area: next;
}

.canvas-carousel__status {
  grid-area: status;
  font-size: var(--canvas-font-size-s, 0.875rem);
  color: var(--canvas-text-secondary);
  text-align: center;
}

.canvas-carousel[data-structure-error="true"] {
  outline: 1px dashed var(--canvas-status-danger-border, var(--canvas-border-default));
}

@container (max-width: 400px) {
  .canvas-carousel__slide {
    flex-basis: min(248px, 90%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .canvas-carousel__track {
    scroll-behavior: auto;
  }
}