/**
 * Adaptive Carousel — frontend stylesheet
 * Version: 1.0.3
 * Standalone. Matches src/frontend.js and block-adaptive-carousel.js.
 * No dependency on the original Grid to Carousel plugin.
 */

/* ------------------------------------------------------------
   1. Base wrapper and media safety
   ------------------------------------------------------------ */
.wp-block-adaptive-carousel-wrapper,
.adc-wrapper {
  display: block;
  position: relative;
  box-sizing: border-box;
  inline-size: 100%;
  max-inline-size: 100%;
  min-inline-size: 0;
}

.adc-wrapper .adc-track,
.adc-wrapper .adc-track > * {
  box-sizing: border-box;
  min-inline-size: 0;
}

.adc-wrapper .adc-track {
  inline-size: 100%;
  max-inline-size: 100%;
}

.adc-wrapper .adc-track img,
.adc-wrapper .adc-track video,
.adc-wrapper .adc-track iframe {
  max-inline-size: 100%;
}

.adc-wrapper .adc-track img,
.adc-wrapper .adc-track video {
  block-size: auto;
}

/* ------------------------------------------------------------
   2. Normal grid mode (and safe pre-initialisation fallback)
   The user's grid-template values continue to take precedence.
   ------------------------------------------------------------ */
.adc-wrapper.is-grid .adc-track,
.adc-wrapper:not(.is-grid):not(.is-carousel):not(.is-editor) .adc-track {
  display: grid;
  grid-template-columns: var(--adc-template-columns, none);
  grid-template-rows: var(--adc-template-rows, none);
  grid-auto-flow: var(--adc-auto-flow, row);
  column-gap: var(--adc-col-gap, 0px);
  row-gap: var(--adc-row-gap, 0px);
}

/* ------------------------------------------------------------
   3. Carousel shell and track
   Flex column permits grouped controls before/after the track
   without needing new markup or modern :has() selectors.
   ------------------------------------------------------------ */
.adc-wrapper.is-carousel {
  display: flex;
  flex-direction: column;
  position: relative;
  min-inline-size: 0;
  /* Keep outside arrows visible; the scroll TRACK clips slides. */
  overflow: visible;
}

.adc-wrapper.is-carousel .adc-track {
  display: flex;
  flex-flow: row nowrap;
  flex: 0 0 auto;
  order: 2;
  align-items: stretch;
  gap: var(--adc-col-gap, 0px);
  inline-size: 100%;
  max-inline-size: 100%;
  min-inline-size: 0;
  box-sizing: border-box;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-inline: contain;
  scroll-snap-type: x var(--adc-snap-mode, mandatory);
  scroll-padding-inline: var(--adc-edge-padding, 0px);
  padding-inline: var(--adc-edge-padding, 0px);
}

/*
 * The frontend engine calculates --adc-slide-basis from the actual track
 * width, the computed column gap and the responsive slides-per-view value.
 * Explicit flex basis and width override GenerateBlocks container sizing.
 * This avoids relying on CSS division by a custom property.
 */
.adc-wrapper.is-carousel .adc-track > * {
  flex: 0 0 var(--adc-slide-basis, 100%) !important;
  inline-size: var(--adc-slide-basis, 100%) !important;
  min-inline-size: 0 !important;
  max-inline-size: var(--adc-slide-basis, 100%) !important;
  box-sizing: border-box;
  scroll-snap-align: start;
  scroll-snap-stop: normal;
}

.adc-wrapper.is-carousel .adc-track > .adc-slide {
  /* JS applies min-height where equal heights are enabled. */
  position: relative;
}

/* Respect the Gutenberg Hide Scrollbar option. */
.adc-wrapper.is-carousel .adc-track.adc-hide-scrollbar {
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.adc-wrapper.is-carousel .adc-track.adc-hide-scrollbar::-webkit-scrollbar {
  display: none;
  inline-size: 0;
  block-size: 0;
}

/* ------------------------------------------------------------
   4. Movement modes
   ------------------------------------------------------------ */
.adc-wrapper.adc-movement-snap .adc-track {
  scroll-snap-type: x var(--adc-snap-mode, mandatory);
}

.adc-wrapper.adc-movement-smooth .adc-track {
  /* JS handles snap destination and transition animation. */
  scroll-snap-type: none;
  touch-action: pan-y;
  cursor: grab;
}

.adc-wrapper.adc-movement-smooth .adc-track:active {
  cursor: grabbing;
}

.adc-wrapper.adc-movement-smooth .adc-track img {
  -webkit-user-drag: none;
}

.adc-wrapper.is-carousel.adc-movement-continuous .adc-track {
  /* This track never scrolls: animation happens on the composited inner belt. */
  display: block;
  scroll-snap-type: none;
  overflow: hidden; /* Fallback for older browsers. */
  overflow: clip;
  scrollbar-width: none;
  touch-action: pan-y;
  overflow-anchor: none;
}

.adc-wrapper.is-carousel.adc-movement-continuous .adc-track > .adc-marquee-belt {
  display: flex;
  flex-flow: row nowrap;
  align-items: stretch;
  gap: var(--adc-col-gap, 0px);
  inline-size: max-content !important;
  min-inline-size: 0;
  max-inline-size: none !important;
  flex: none !important;
  will-change: transform;
  backface-visibility: hidden;
}

/* GenerateBlocks slide widths must apply to the belt's children, not the belt. */
.adc-wrapper.is-carousel.adc-movement-continuous .adc-track > .adc-marquee-belt > * {
  flex: 0 0 var(--adc-slide-basis, 100%) !important;
  inline-size: var(--adc-slide-basis, 100%) !important;
  min-inline-size: 0 !important;
  max-inline-size: var(--adc-slide-basis, 100%) !important;
  box-sizing: border-box;
  scroll-snap-align: none;
}

/* Prevent a flash of unpositioned logos before the first transform is applied. */
.adc-wrapper.adc-movement-continuous:not(.adc-marquee-ready) .adc-track {
  visibility: hidden;
}
.adc-wrapper.adc-movement-continuous .adc-track::-webkit-scrollbar {
  display: none;
}

.adc-wrapper.adc-movement-continuous .adc-marquee-belt > [data-adc-clone="true"] {
  pointer-events: none;
}

/* ------------------------------------------------------------
   5. Arrow buttons — shared appearance
   Text glyphs supplied by frontend.js; no SVG/font dependencies.
   ------------------------------------------------------------ */
.adc-wrapper.is-carousel .adc-arrow {
  appearance: none;
  -webkit-appearance: none;
  display: inline-flex;
  flex: 0 0 auto;
  justify-content: center;
  align-items: center;
  inline-size: 42px;
  block-size: 42px;
  padding: 0;
  margin: 0;
  border: 1px solid currentColor;
  border-radius: 50%;
  background-color: transparent;
  color: inherit;
  font-family: inherit;
  font-size: 30px;
  font-weight: 400;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  z-index: 2;
  transition: opacity 160ms ease, background-color 160ms ease;
}

.adc-wrapper.is-carousel .adc-arrow > span {
  display: block;
  line-height: 1;
  margin-block-start: -3px;
}

.adc-wrapper.is-carousel .adc-arrow:hover:not(:disabled) {
  background-color: rgb(128 128 128 / 10%);
}

.adc-wrapper.is-carousel .adc-arrow:focus-visible,
.adc-wrapper.is-carousel .adc-dots button:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 3px;
}

.adc-wrapper.is-carousel .adc-arrow:disabled {
  opacity: 0.32;
  cursor: default;
}

/* Standard side-edge arrows: anchored to the visible carousel. */
.adc-wrapper.is-carousel > .adc-arrow {
  position: absolute;
  inset-block-start: 50%;
  transform: translateY(-50%);
}

.adc-wrapper.is-carousel > .adc-arrow.adc-prev {
  inset-inline-start: var(--adc-arrows-offset, 16px);
}

.adc-wrapper.is-carousel > .adc-arrow.adc-next {
  inset-inline-end: var(--adc-arrows-offset, 16px);
}

/* Original "outside" option places arrows beyond the wrapper. */
.adc-wrapper.is-carousel.adc-arrows-outside > .adc-arrow.adc-prev {
  inset-inline-start: calc(0px - var(--adc-arrows-offset, 16px) - 42px);
}
.adc-wrapper.is-carousel.adc-arrows-outside > .adc-arrow.adc-next {
  inset-inline-end: calc(0px - var(--adc-arrows-offset, 16px) - 42px);
}

/* ------------------------------------------------------------
   6. Grouped arrows — upper/lower, left/right
   The group is inserted AFTER the track in the DOM; flex order
   positions it visually without changing saved Gutenberg markup.
   ------------------------------------------------------------ */
.adc-wrapper.is-carousel .adc-arrow-group {
  display: flex;
  align-items: center;
  gap: 10px;
  inline-size: 100%;
  box-sizing: border-box;
  padding-inline: var(--adc-arrows-offset, 16px);
  flex: 0 0 auto;
}

.adc-wrapper.is-carousel .adc-arrow-group.adc-arrows-top-left,
.adc-wrapper.is-carousel .adc-arrow-group.adc-arrows-top-right {
  order: 1;
  margin-block-end: 14px;
}
.adc-wrapper.is-carousel .adc-arrow-group.adc-arrows-bottom-left,
.adc-wrapper.is-carousel .adc-arrow-group.adc-arrows-bottom-right {
  order: 3;
  margin-block-start: 14px;
}

.adc-wrapper.is-carousel .adc-arrow-group.adc-arrows-top-left,
.adc-wrapper.is-carousel .adc-arrow-group.adc-arrows-bottom-left {
  justify-content: flex-start;
}
.adc-wrapper.is-carousel .adc-arrow-group.adc-arrows-top-right,
.adc-wrapper.is-carousel .adc-arrow-group.adc-arrows-bottom-right {
  justify-content: flex-end;
}

/* Grouped buttons participate in normal layout, not side overlays. */
.adc-wrapper.is-carousel .adc-arrow-group .adc-arrow {
  position: static;
  transform: none;
}

/* ------------------------------------------------------------
   7. Dot navigation
   JS uses aria-current="true", not aria-selected.
   ------------------------------------------------------------ */
.adc-wrapper.is-carousel .adc-dots {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  order: 4;
  align-items: center;
  justify-content: center;
  inline-size: 100%;
  margin-block-start: 24px;
}

.adc-wrapper.is-carousel .adc-dots.align-left {
  justify-content: flex-start;
}
.adc-wrapper.is-carousel .adc-dots.align-right {
  justify-content: flex-end;
}

.adc-wrapper.is-carousel .adc-dots button {
  appearance: none;
  -webkit-appearance: none;
  display: block;
  flex: 0 0 auto;
  inline-size: 10px;
  block-size: 10px;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background-color: #b2b2be;
  cursor: pointer;
  transition: background-color 160ms ease, transform 160ms ease;
}

.adc-wrapper.is-carousel .adc-dots button[aria-current="true"] {
  background-color: var(--accent, currentColor);
  transform: scale(1.15);
}

/* ------------------------------------------------------------
   8. Masonry — grid mode only
   Retains the original column layout and optional centred stacks.
   ------------------------------------------------------------ */
.adc-wrapper.masonry.is-grid:not(.masonry-center) .adc-track {
  display: block !important;
  grid-template-columns: none !important;
  grid-template-rows: none !important;
  grid-auto-flow: initial !important;
  row-gap: 0 !important;
  column-count: 2;
  column-gap: var(--adc-col-gap, 25px);
}

.adc-wrapper.masonry.is-grid:not(.masonry-center) .adc-track > * {
  display: inline-block;
  inline-size: 100%;
  margin: 0 0 var(--adc-row-gap, 25px);
  break-inside: avoid;
  height: auto !important;
  min-height: 0 !important;
}

.adc-wrapper.masonry-center.is-grid .adc-track,
.adc-wrapper.masonry.masonry-center.is-grid .adc-track {
  display: grid !important;
  grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
  column-count: initial !important;
  column-gap: var(--adc-col-gap, 25px) !important;
  row-gap: 0 !important;
}

.adc-wrapper.masonry-center.is-grid .adc-track > .masonry-col {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--adc-row-gap, 25px);
  min-inline-size: 0;
  min-block-size: 100%;
}

.adc-wrapper.masonry-center.is-grid .adc-track > .masonry-col > * {
  inline-size: 100%;
  height: auto !important;
  min-height: 0 !important;
}

@media (max-width: 1024px) {
  .adc-wrapper.masonry.is-grid:not(.masonry-center) .adc-track {
    column-count: 2;
  }
}

@media (max-width: 768px) {
  .adc-wrapper.masonry.is-grid:not(.masonry-center) .adc-track {
    column-count: 1;
  }
}

/* ------------------------------------------------------------
   9. Accessibility / motion preferences
   Avoid transitions where the operating system requests less motion.
   ------------------------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
  .adc-wrapper .adc-arrow,
  .adc-wrapper .adc-dots button {
    transition: none;
  }
  .adc-wrapper.is-carousel .adc-track {
    scroll-behavior: auto;
  }
}