/* callouts.css -- WS-Reading callout blocks + reading-mode chrome.
 *
 * Consumes semantic tokens from tokens.css only -- no primitive references,
 * no hex literals. Loaded after tokens.css and doc-style.css so we can
 * specialise the generic .content blockquote selector.
 *
 * Three callout kinds, mapped to GitHub-style markers in reading.js:
 *   > [!info]    -> blockquote[data-callout="info"]
 *   > [!warn]    -> blockquote[data-callout="warn"]
 *   > [!danger]  -> blockquote[data-callout="danger"]
 *
 * Also styles:
 *   .acms-anchor-link        anchor-on-hover icons
 *   .acms-read-time          per-section reading-time badge
 *   #acms-read-progress      fixed-top reading-progress bar
 *   .acms-hl / .tok-*        syntax-highlighter token classes
 */

/* ─── Callout blocks ────────────────────────────────────────────────────── */

.content blockquote[data-callout] {
  margin: 24px 0;
  padding: 16px 20px;
  border-left: 4px solid var(--border-default);
  border-radius: var(--radius-md);
  background: var(--bg-inset);
  color: var(--fg-primary);
  font-style: normal;
}

.content blockquote[data-callout] > p:first-child {
  margin-top: 0;
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
}

.content blockquote[data-callout] > p:last-child {
  margin-bottom: 0;
}

.acms-callout-label {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid currentColor;
  flex-shrink: 0;
}

.content blockquote[data-callout="info"] {
  border-left-color: var(--status-info-border);
  background: var(--status-info-bg);
  color: var(--fg-primary);
}
.content blockquote[data-callout="info"] .acms-callout-label {
  color: var(--status-info-fg);
}

.content blockquote[data-callout="warn"] {
  border-left-color: var(--status-warning-border);
  background: var(--status-warning-bg);
  color: var(--fg-primary);
}
.content blockquote[data-callout="warn"] .acms-callout-label {
  color: var(--status-warning-fg);
}

.content blockquote[data-callout="danger"] {
  border-left-color: var(--status-danger-border);
  background: var(--status-danger-bg);
  color: var(--fg-primary);
}
.content blockquote[data-callout="danger"] .acms-callout-label {
  color: var(--status-danger-fg);
}

/* ─── Anchor-on-hover icons ─────────────────────────────────────────────── */

.content h2,
.content h3 {
  position: relative;
}

.acms-anchor-link {
  display: inline-block;
  margin-left: var(--space-3);
  padding: 0 6px;
  font-family: var(--font-sans);
  font-size: 0.7em;
  font-weight: var(--font-weight-regular);
  line-height: 1.4;
  color: var(--fg-tertiary);
  text-decoration: none;
  opacity: 0;
  vertical-align: middle;
  border-radius: var(--radius-sm);
  transition:
    opacity var(--duration-fast) var(--ease-out-quint),
    color var(--duration-fast) var(--ease-out-quint),
    background-color var(--duration-fast) var(--ease-out-quint);
}

.content h2:hover .acms-anchor-link,
.content h3:hover .acms-anchor-link,
.acms-anchor-link:focus,
.acms-anchor-link:focus-visible {
  opacity: 1;
}

.acms-anchor-link:hover {
  color: var(--accent-bg);
  background: var(--accent-subtle-bg);
}

.acms-anchor-link:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.acms-anchor-link.copied {
  opacity: 1;
  color: var(--status-success-fg);
  background: var(--status-success-bg);
}

.acms-anchor-link.copied::after {
  content: "copied";
  margin-left: 6px;
  font-size: 0.9em;
}

/* ─── Reading-time badge ────────────────────────────────────────────────── */

.acms-read-time {
  display: inline-block;
  margin-left: var(--space-4);
  padding: 2px 8px;
  font-family: var(--font-sans);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.02em;
  color: var(--fg-tertiary);
  background: var(--bg-inset);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  vertical-align: middle;
  white-space: nowrap;
}

/* ─── Reading-progress bar ──────────────────────────────────────────────── */

#acms-read-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: var(--z-sticky);
  background: transparent;
  pointer-events: none;
}

#acms-read-progress .acms-read-progress-fill {
  height: 100%;
  width: 0;
  background: var(--accent-bg);
  transition: width var(--duration-fast) var(--ease-linear);
  will-change: width;
}

/* ─── Code-block syntax tokens ──────────────────────────────────────────── */

.content pre.acms-hl > code {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
}

.content pre.acms-hl .tok-kw  { color: var(--accent-bg); font-weight: var(--font-weight-semibold); }
.content pre.acms-hl .tok-str { color: var(--status-success-fg); }
.content pre.acms-hl .tok-num { color: var(--status-warning-fg); }
.content pre.acms-hl .tok-com { color: var(--fg-tertiary); font-style: italic; }
.content pre.acms-hl .tok-pun { color: var(--fg-secondary); }

/* ─── Print: hide chrome, soften callouts ──────────────────────────────── */

@media print {
  #acms-read-progress { display: none; }
  .acms-anchor-link   { display: none; }
  .acms-read-time     { display: none; }
  .content blockquote[data-callout] {
    background: none;
    border-left-width: 2px;
  }
}

/* ─── Reduced motion fallback ──────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  #acms-read-progress .acms-read-progress-fill {
    transition: none;
  }
  .acms-anchor-link {
    transition: none;
  }
}

/* ─── Narrow viewports ─────────────────────────────────────────────────── */

@media (max-width: 768px) {
  .content blockquote[data-callout] {
    margin: 16px 0;
    padding: 12px 14px;
  }
  .content blockquote[data-callout] > p:first-child {
    flex-wrap: wrap;
    gap: var(--space-2);
  }
  .acms-read-time {
    display: block;
    margin: var(--space-2) 0 0 0;
    width: fit-content;
  }
  .acms-anchor-link {
    /* On touch devices the hover state never fires, so always-on at low opacity. */
    opacity: 0.4;
  }
}