/* Shared DARK theme for server-rendered Markdown (`.article-content`).
   Layout/overflow rules come from chat/css/chat-rich-content.css (specificity-0
   :where() selectors); this file only provides the THEME so every surface
   (blog article, wiki page, wiki live preview) renders rich content identically. */

.article-content {
  color: var(--text-color);
  font-size: 1.02rem;
  line-height: 1.75;
}

.article-content h1,
.article-content h2,
.article-content h3,
.article-content h4,
.article-content h5,
.article-content h6 {
  margin: 1.8rem 0 0.8rem;
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-emphasis);
}

.article-content h1:first-child,
.article-content h2:first-child,
.article-content h3:first-child {
  margin-top: 0;
}

.article-content h1 {
  font-size: 1.9rem;
}

.article-content h2 {
  font-size: 1.55rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid rgba(var(--primary-rgb), 0.14);
}

.article-content h3 {
  font-size: 1.25rem;
}

.article-content h4 {
  font-size: 1.05rem;
}

.article-content h5 {
  font-size: 0.98rem;
}

.article-content h6 {
  font-size: 0.92rem;
}

/* ToC anchors (wiki aside `#anchor`) must clear the fixed 74px navbar. */
.article-content :where(h1, h2, h3, h4) {
  scroll-margin-top: 96px;
}

.article-content p {
  margin: 0 0 1.1rem;
}

.article-content a {
  color: var(--secondary-color);
  text-decoration: underline;
  text-decoration-thickness: 1.5px;
  text-underline-offset: 0.18em;
}

.article-content a:hover {
  color: var(--secondary-soft);
}

.article-content ul,
.article-content ol {
  margin: 0 0 1.1rem;
  padding-left: 1.5rem;
}

.article-content ul ul,
.article-content ul ol,
.article-content ol ul,
.article-content ol ol {
  margin-top: 0.35rem;
  margin-bottom: 0.35rem;
}

.article-content li {
  margin-bottom: 0.35rem;
}

/* GFM task lists */
.article-content li > input[type="checkbox"] {
  margin-right: 0.45rem;
  accent-color: var(--secondary-color);
}

.article-content blockquote {
  margin: 1.2rem 0;
  padding: 0.8rem 1.2rem;
  border-left: 4px solid var(--primary-color);
  background: rgba(var(--primary-rgb), 0.08);
  border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
  color: var(--text-color);
}

.article-content kbd {
  padding: 0.1rem 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.82em;
  color: var(--text-emphasis);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-color);
  border-bottom-width: 2px;
  border-radius: 6px;
}

.article-content mark {
  padding: 0.05em 0.25em;
  color: var(--text-emphasis);
  background: rgba(var(--secondary-rgb), 0.24);
  border-radius: 4px;
}

.article-content del {
  color: var(--text-muted);
}

.article-content img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 1.2rem auto;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
}

.article-content hr {
  margin: 2rem 0;
  border: 0;
  border-top: 1px solid var(--border-color);
}

/* Inline code : light chip. Code BLOCKS stay dark (atom-one-dark, like chat). */
.article-content code {
  padding: 0.12rem 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.88em;
  color: var(--secondary-color);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(var(--primary-rgb), 0.24);
  border-radius: 6px;
}

.article-content pre {
  overflow: auto;
  margin: 1.2rem 0;
  padding: 14px;
  background: #081824;
  border: 1px solid rgba(10, 15, 31, 0.4);
  border-radius: var(--border-radius-md);
}

.article-content pre code {
  padding: 0;
  color: #dbeafe;
  background: transparent;
  border: 0;
}

/* Tables : light */
.article-content .table-wrap {
  margin: 1.2rem 0;
  border: 1px solid rgba(var(--primary-rgb), 0.14);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
}

.article-content table {
  width: 100%;
  margin: 0;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.article-content th,
.article-content td {
  padding: 0.6rem 0.9rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.article-content thead th {
  font-weight: 700;
  color: var(--text-emphasis);
  background: rgba(var(--primary-rgb), 0.16);
}

.article-content tbody tr:hover {
  background: rgba(255, 255, 255, 0.04);
}

/* Callouts : light variants (structure from chat-utils.js transformCallouts) */
.article-content .md-callout {
  margin: 1.2rem 0;
  padding: 0.9rem 1.1rem;
  border-radius: var(--border-radius-md);
  border: 1px solid;
  background: var(--card-bg-soft);
}

.article-content .md-callout-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
  font-weight: 700;
  font-size: 0.92rem;
}

.article-content .md-callout-icon {
  display: inline-flex;
  width: 1.1rem;
  height: 1.1rem;
}

.article-content .md-callout-body > :last-child {
  margin-bottom: 0;
}

.article-content .md-callout-note {
  border-color: rgba(var(--primary-rgb), 0.35);
  background: var(--primary-light);
}

.article-content .md-callout-note .md-callout-title {
  color: var(--secondary-color);
}

.article-content .md-callout-tip {
  border-color: rgba(var(--success-rgb), 0.35);
  background: rgba(var(--success-rgb), 0.12);
}

.article-content .md-callout-tip .md-callout-title {
  color: var(--success-color);
}

.article-content .md-callout-important {
  border-color: rgba(var(--accent-rgb), 0.35);
  background: rgba(var(--accent-rgb), 0.14);
}

.article-content .md-callout-important .md-callout-title {
  color: var(--accent-color);
}

.article-content .md-callout-warning {
  border-color: rgba(var(--warning-rgb), 0.4);
  background: rgba(var(--warning-rgb), 0.12);
}

.article-content .md-callout-warning .md-callout-title {
  color: var(--warning-color);
}

.article-content .md-callout-danger {
  border-color: rgba(var(--danger-rgb), 0.35);
  background: rgba(var(--danger-rgb), 0.12);
}

.article-content .md-callout-danger .md-callout-title {
  color: var(--danger-color);
}

/* Figures keep the light palette used by Mermaid and Chart.js in the chat. */
.article-content .mermaid-block,
.article-content .chart-block {
  position: relative;
  margin: 1.4rem 0;
  padding: 2.8rem 1.2rem 1.2rem;
  background: #ffffff;
  border: 1px solid rgba(var(--primary-rgb), 0.24);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  overflow-x: auto;
}

.article-content .mermaid-block {
  background: #f8fafc;
}

.article-content .mermaid-block > svg {
  max-width: 100%;
  height: auto;
}

/* HTML labels inside SVG must inherit Mermaid's palette, not the page text. */
.article-content .mermaid-block p {
  color: inherit;
  margin: 0;
}

/* Keep the bitmap ratio when the shared layer forces width: 100%. */
.article-content .chart-block canvas {
  height: auto !important;
  max-height: none;
}

.article-content .mermaid-error,
.article-content .chart-error {
  margin: 1.2rem 0;
  padding: 0.9rem 1.1rem;
  color: var(--danger-color);
  background: rgba(var(--danger-rgb), 0.12);
  border: 1px solid rgba(var(--danger-rgb), 0.35);
  border-radius: var(--border-radius-md);
}

.article-content .mermaid-pending,
.article-content .chart-pending {
  display: none;
}

/* Copy / PNG buttons retain the dark brand treatment. */
.article-content .code-block {
  position: relative;
}

.article-content .code-copy-btn,
.article-content .mermaid-png-btn,
.article-content .chart-png-btn {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.6rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  background: var(--card-bg);
  border: 1px solid rgba(var(--primary-rgb), 0.3);
  border-radius: 6px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.article-content .code-block:hover .code-copy-btn,
.article-content .mermaid-block:hover .mermaid-png-btn,
.article-content .chart-block:hover .chart-png-btn,
.article-content .code-copy-btn:focus-visible,
.article-content .mermaid-png-btn:focus-visible,
.article-content .chart-png-btn:focus-visible {
  opacity: 1;
}

.article-content .code-copy-btn:hover,
.article-content .mermaid-png-btn:hover,
.article-content .chart-png-btn:hover {
  color: var(--secondary-color);
  border-color: var(--primary-color);
}

.article-content .code-copy-btn svg,
.article-content .mermaid-png-btn svg,
.article-content .chart-png-btn svg {
  width: 0.9rem;
  height: 0.9rem;
}

@media (max-width: 575.98px) {
  .article-content .code-copy-btn,
  .article-content .mermaid-png-btn,
  .article-content .chart-png-btn {
    opacity: 1;
  }
}