/* Figure embedding, ported from the Zephon blog post so the guide and the post
 * present the same figures the same way.
 *
 * Sources in ../datology-web:
 *   src/payload/blocks/FigureCarousel/styles.css  (the carousel)
 *   src/features/StudioBlog/styles.css            (iframes and captions)
 *   src/features/ZephonBlog/styles.css            (the post's teal palette)
 *
 * Two deliberate departures. The post is always light, so it gives only the
 * fault-resume figure a white card; here every figure gets one, because the
 * figures ship a light palette on a transparent background and only go dark
 * when their own document carries data-theme="dark", which a parent page cannot
 * set across a frame. And the post's hash deep-linking into a slide is dropped,
 * since the guide does not link to individual slides. */

.zephon-post {
  --zephon-ink: #112a2b;
  --zephon-teal: #096361;
  --zephon-mint: #d8f8f3;
  --zephon-muted: #526e6b;
  --zephon-line: #cee2dd;
  --zephon-wash: #f0f9f6;
}

/* ---- a figure on its own ------------------------------------------------ */

.zephon-post.zephon-embed {
  margin-block: 2rem;
}

/* The backdrop is what the post does not need: it is always light, whereas a
   figure here has to stay legible when the guide is read in dark mode, and it
   only goes dark when its own document carries data-theme="dark", which a
   parent page cannot set across a frame. The radius matches the frame most of
   the figures draw for themselves. */
.zephon-post iframe {
  display: block;
  width: 100%;
  max-width: 100%;
  border: 0;
  border-radius: 4px;
  background: #fff;
}

/* Most figures arrive with their own frame; the fault-resume comparison does
   not, which is why the post gives that one a card. Adding a card to a figure
   that already has a frame draws the border twice. */
.zephon-post.zephon-framed {
  border: 1px solid var(--zephon-line);
  border-radius: 0.75rem;
  padding: 0.875rem 0.625rem 1rem;
  background: #fff;
}

.zephon-post figcaption {
  margin-top: 0.75rem;
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--zephon-muted);
}

.zephon-post.zephon-framed figcaption {
  padding-inline: 0.625rem;
}

.zephon-post figcaption strong {
  color: var(--zephon-ink);
}

/* ---- the carousel ------------------------------------------------------- */

/* The post gets this from Tailwind's preflight. Without it a slide is its 100%
   width *plus* its padding, so it hangs 40px past the viewport that clips it and
   the figure inside sits off-centre. */
.figure-carousel,
.figure-carousel * {
  box-sizing: border-box;
}

.zephon-post.figure-carousel {
  --carousel-ink: var(--zephon-ink);
  --carousel-muted: var(--zephon-muted);
  margin-block: 2rem;
  min-width: 0;
  border: 1px solid var(--zephon-line);
  border-radius: 0.875rem;
  background: #fff;
  box-shadow: none;
}

.figure-carousel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--zephon-line);
  color: var(--carousel-muted);
  font-size: 0.8125rem;
  line-height: 1.5;
}

/* The post weights this at 500, where it labels the carousel's chrome. Here it
   is the figure's subtitle, so it matches the bold lead-in the other figures
   put at the head of their captions. */
.figure-carousel-title {
  font-weight: 700;
  color: var(--carousel-ink);
}

.figure-carousel-count {
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
}

.figure-carousel-viewport {
  position: relative;
  overflow: hidden;
}

/* A hidden slide keeps its width and its DOM, so the figure inside it keeps
   its layout and its state instead of being rebuilt on every switch. */
.figure-carousel-item {
  display: flow-root;
  width: 100%;
  padding: 1.25rem;
  position: absolute;
  inset: 0 0 auto;
  opacity: 0;
  visibility: hidden;
}

.figure-carousel-item[data-active="true"] {
  position: relative;
  opacity: 1;
  visibility: visible;
}

.figure-carousel-item > :first-child {
  margin-top: 0;
}

.figure-carousel-item > :last-child {
  margin-bottom: 0;
}

.figure-carousel-navigation {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  border-top: 1px solid var(--zephon-line);
  border-radius: 0 0 0.875rem 0.875rem;
  background: var(--zephon-wash);
}

.figure-carousel-navigation button {
  cursor: pointer;
  min-height: 44px;
  color: var(--carousel-muted);
  background: transparent;
  border: 0;
  border-radius: 0.5rem;
  font: inherit;
  font-size: 0.8125rem;
  line-height: 1.35;
  transition:
    background 150ms,
    color 150ms,
    box-shadow 150ms;
}

.figure-carousel-arrow {
  display: grid;
  place-items: center;
  flex: 0 0 44px;
  width: 44px;
  background: #fff;
  border: 1px solid var(--zephon-line);
}

.figure-carousel-choices {
  display: flex;
  justify-content: center;
  gap: 0.25rem;
  flex: 1;
  min-width: 0;
  flex-wrap: wrap;
}

.figure-carousel-choices button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 0.875rem;
}

.figure-carousel-dot {
  width: 5px;
  height: 5px;
  flex-shrink: 0;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.5;
}

.figure-carousel-navigation button:hover {
  background: var(--zephon-mint);
  color: var(--carousel-ink);
}

.figure-carousel-choices button[aria-pressed="true"] {
  color: var(--zephon-teal);
  background: var(--zephon-mint);
  font-weight: 500;
}

.figure-carousel-choices button[aria-pressed="true"] .figure-carousel-dot {
  opacity: 1;
}

.figure-carousel-navigation button:focus-visible,
.figure-carousel:focus-visible {
  outline: 2px solid var(--zephon-teal);
  outline-offset: 3px;
}

/* The post gets this from Tailwind; furo has no equivalent, and without it the
   carousel's live region reads as visible text under the caption. */
.figure-carousel-live {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* Each slide carries its own caption, so the two switch together. */
.figure-carousel .figure-caption {
  margin: 1.5rem 0 0;
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--zephon-muted);
}

.figure-carousel .figure-caption strong {
  color: var(--zephon-ink);
}

@media (max-width: 640px) {
  .figure-carousel-header {
    padding: 0.875rem 1rem;
  }
  .figure-carousel-item {
    padding: 0.875rem;
  }
  .figure-carousel-navigation {
    gap: 0.25rem;
    padding: 0.5rem;
  }
  .figure-carousel-choices button {
    padding-inline: 0.5rem;
    font-size: 0.75rem;
  }
  .figure-carousel-dot {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .figure-carousel-navigation button {
    transition: none;
  }
}

@media print {
  .figure-carousel-viewport {
    height: auto !important;
    overflow: visible;
  }
  .figure-carousel-item {
    position: relative;
    visibility: visible;
    opacity: 1;
    break-inside: avoid;
  }
  .figure-carousel-navigation,
  .figure-carousel-count {
    display: none;
  }
}