/**
 * ASIOS Website — Content Block Styles
 * Styles the 6 block wrapper classes markdown.mjs's directive transforms emit:
 * block-hint, block-expandable, block-stepper, block-cards, block-figure,
 * block-tabs. Per 260907-009-gitbook-website-build-recommendation.md §5.3-5.4.
 * Assumes tokens.css is loaded first — no new custom properties are added here.
 */

/* ---- block-hint ---- */

.block-hint {
  border-left: 4px solid;
  border-radius: var(--radius-card);
  padding: 12px 16px;
  margin: 16px 0;
}

.block-hint p {
  font-weight: 400;
}

.block-hint strong {
  font-weight: 600;
}

.block-hint--info {
  border-left-color: var(--hint-info);
  background: color-mix(in srgb, var(--hint-info) 8%, transparent);
}

.block-hint--success {
  border-left-color: var(--hint-success);
  background: color-mix(in srgb, var(--hint-success) 8%, transparent);
}

.block-hint--warning {
  border-left-color: var(--hint-warning);
  background: color-mix(in srgb, var(--hint-warning) 8%, transparent);
}

.block-hint--danger {
  border-left-color: var(--hint-danger);
  background: color-mix(in srgb, var(--hint-danger) 8%, transparent);
}

[data-theme="dark"] .block-hint--info {
  background: color-mix(in srgb, var(--hint-info) 14%, transparent);
}

[data-theme="dark"] .block-hint--success {
  background: color-mix(in srgb, var(--hint-success) 14%, transparent);
}

[data-theme="dark"] .block-hint--warning {
  background: color-mix(in srgb, var(--hint-warning) 14%, transparent);
}

[data-theme="dark"] .block-hint--danger {
  background: color-mix(in srgb, var(--hint-danger) 14%, transparent);
}

/* ---- block-expandable ---- */

.block-expandable {
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  margin: 16px 0;
  overflow: hidden;
}

.block-expandable__summary {
  list-style: none;
  cursor: pointer;
  padding: 12px 16px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.block-expandable__summary::-webkit-details-marker {
  display: none;
}

.block-expandable__summary::after {
  content: '';
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  margin-left: 12px;
  border-right: 2px solid var(--text-muted);
  border-bottom: 2px solid var(--text-muted);
  transform: rotate(-45deg);
  transition: transform 150ms ease;
}

.block-expandable[open] .block-expandable__summary::after {
  transform: rotate(45deg);
}

.block-expandable__content {
  padding: 0 16px 16px;
}

.block-expandable__content > :first-child {
  margin-top: 0;
}

/* ---- block-stepper ---- */

.block-stepper {
  counter-reset: block-stepper-step;
  margin: 16px 0;
}

.block-stepper__step {
  counter-increment: block-stepper-step;
  position: relative;
  padding-left: 40px;
  padding-bottom: 24px;
}

.block-stepper__step:last-child {
  padding-bottom: 0;
}

.block-stepper__step::before {
  content: counter(block-stepper-step);
  position: absolute;
  left: 0;
  top: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent-bg);
  color: var(--accent);
  font-weight: 600;
  font-size: 13px;
  line-height: 28px;
  text-align: center;
}

.block-stepper__step:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 13px;
  top: 28px;
  bottom: 0;
  width: 2px;
  background: var(--border);
}

.block-stepper__step-title {
  font-weight: 600;
  margin-bottom: 4px;
}

.block-stepper__step-content > :first-child {
  margin-top: 0;
}

/* ---- block-cards ---- */

.block-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--grid-gap-desktop);
  margin: 16px 0;
}

.block-cards__card {
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 16px;
}

.block-cards__card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-card-hover);
}

.block-cards__card-title {
  font-weight: 600;
  margin-bottom: 8px;
}

.block-cards__card-content > :first-child {
  margin-top: 0;
}

@media (max-width: 640px) {
  .block-cards {
    grid-template-columns: 1fr;
  }
}

/* ---- block-figure ---- */

.block-figure {
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 16px;
  margin: 16px 0;
  text-align: center;
}

.block-figure img {
  max-width: 100%;
  border-radius: var(--radius-inline-code);
}

.block-figure img[data-zoomable] {
  cursor: zoom-in;
}

.block-figure figcaption {
  margin-top: 8px;
  color: var(--text-muted);
  font-size: var(--font-size-toc-item);
}

/* Light/dark variants are both emitted at build time and swapped via CSS (token
   inheritance), not JS — same pattern as R02's block-cards theme handling. */
.block-figure__dark {
  display: none;
}

[data-theme="dark"] .block-figure .block-figure__light {
  display: none;
}

[data-theme="dark"] .block-figure .block-figure__dark {
  display: block;
}

/* ---- figure-zoom overlay ---- */

.figure-zoom-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.figure-zoom-overlay.is-open {
  display: flex;
}

.figure-zoom-overlay__img {
  max-width: 90vw;
  max-height: 90vh;
  border-radius: var(--radius-card);
  cursor: zoom-out;
}

/* ---- block-tabs ---- */

.block-tabs {
  margin: 16px 0;
}

.block-tabs__list {
  display: flex;
  flex-direction: row;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}

.block-tabs__button {
  appearance: none;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 8px 12px;
  margin-bottom: -1px;
  font: inherit;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
}

.block-tabs__button.is-active {
  color: var(--accent-text);
  border-bottom-color: var(--accent);
}

/* Before tabs.js runs, only the first panel is visible so the block still
   renders sensibly with no JS; tabs.js then drives visibility via .is-active. */
.block-tabs__tab {
  display: none;
}

.block-tabs__tab:first-of-type {
  display: block;
}

.block-tabs__tab.is-active {
  display: block;
}

/* ---- block-code ---- */

.block-code {
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  margin: 16px 0;
  overflow: hidden;
  background: var(--code-bg);
}

.block-code__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  background: var(--code-bg);
  border-bottom: 1px solid var(--border);
}

.block-code__lang {
  font-family: var(--font-mono);
  font-size: var(--font-size-toc-item);
  color: var(--text-muted);
  text-transform: lowercase;
}

.block-code__copy {
  appearance: none;
  background: none;
  border: none;
  border-radius: var(--radius-button);
  padding: 4px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  cursor: pointer;
}

.block-code__copy:hover {
  color: var(--text);
  background: color-mix(in srgb, var(--text) 8%, transparent);
}

.block-code__copy.is-copied {
  color: var(--hint-success);
}

.block-code__copy.is-copied svg {
  display: none;
}

.block-code__copy::after {
  content: '';
  display: none;
}

.block-code__copy.is-copied::after {
  content: '\2713';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  font-size: 14px;
  line-height: 1;
}

/* Dual-theme Shiki output: `defaultColor: false` (markdown.mjs) emits every
   token as `--shiki-light`/`--shiki-dark` CSS variables with no baked-in
   color, per shiki.style's documented approach — consume them here instead
   of adding new tokens. */
.block-code .shiki,
.block-code .shiki span {
  color: var(--shiki-light);
  background-color: var(--shiki-light-bg);
}

[data-theme="dark"] .block-code .shiki,
[data-theme="dark"] .block-code .shiki span {
  color: var(--shiki-dark);
  background-color: var(--shiki-dark-bg);
}

.block-code pre.shiki {
  margin: 0;
  padding: 16px 0;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: var(--font-size-toc-item);
  line-height: 1.6;
}

.block-code pre.shiki code {
  counter-reset: block-code-line;
}

/* Line numbers via a CSS counter, same technique as `.block-stepper`'s
   counter above — the number is drawn by `::before`, never inserted into
   the line's own text, so `.block-code__copy`'s `data-code` (plain source
   only) never picks it up. */
.block-code pre.shiki .line {
  counter-increment: block-code-line;
  display: inline-block;
  width: 100%;
  padding: 0 16px 0 48px;
  position: relative;
}

.block-code pre.shiki .line::before {
  content: counter(block-code-line);
  position: absolute;
  left: 16px;
  top: 0;
  width: 24px;
  text-align: right;
  color: var(--text-muted);
  opacity: .5;
  user-select: none;
}

.block-code pre.shiki .line.is-highlighted {
  background: var(--accent-bg);
}

.block-code pre.shiki .line.is-diff-add {
  background: color-mix(in srgb, var(--hint-success) 8%, transparent);
}

.block-code pre.shiki .line.is-diff-remove {
  background: color-mix(in srgb, var(--hint-danger) 8%, transparent);
}

[data-theme="dark"] .block-code pre.shiki .line.is-diff-add {
  background: color-mix(in srgb, var(--hint-success) 14%, transparent);
}

[data-theme="dark"] .block-code pre.shiki .line.is-diff-remove {
  background: color-mix(in srgb, var(--hint-danger) 14%, transparent);
}