/* TikZJax — 按文章加载的浏览器端 TikZ 图形 */
.tikzjax-figure {
  margin: var(--space-6) 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #ffffff;
  box-shadow: var(--shadow-sm);
}

.tikzjax-output {
  display: flex;
  min-height: 5rem;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  overflow-x: auto;
  color: #111111;
  scrollbar-width: thin;
}

.tikzjax-output svg {
  display: block;
  width: auto;
  max-width: 100%;
  height: auto;
  flex: 0 0 auto;
}

.tikzjax-source {
  color: var(--color-text);
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
}

.tikzjax-source summary {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  color: var(--color-text-muted);
  font-size: 0.875em;
  font-weight: 500;
  line-height: 1.5;
  list-style: none;
  cursor: pointer;
  user-select: none;
  transition:
    color var(--transition-fast) var(--ease-in-out),
    background-color var(--transition-fast) var(--ease-in-out);
}

.tikzjax-source summary::-webkit-details-marker {
  display: none;
}

.tikzjax-source summary::before {
  content: '';
  width: 0.5em;
  height: 0.5em;
  flex: 0 0 auto;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(-45deg);
  transition: transform 280ms cubic-bezier(0.22, 1, 0.36, 1);
}

.tikzjax-source[open] summary::before {
  transform: rotate(45deg);
}

.tikzjax-source.is-closing summary::before {
  transform: rotate(-45deg);
}

.tikzjax-source summary:hover {
  color: var(--color-primary);
  background: color-mix(in srgb, var(--color-primary) 8%, transparent);
}

.tikzjax-source summary:focus-visible {
  color: var(--color-primary);
  outline: 2px solid color-mix(in srgb, var(--color-primary) 55%, transparent);
  outline-offset: -2px;
}

.tikzjax-source[open] summary {
  color: var(--color-primary);
}

.tikzjax-source-body {
  overflow: hidden;
  border-top: 1px solid var(--color-border);
  will-change: height, opacity;
}

.tikzjax-source pre {
  max-height: 24rem;
  margin: 0;
  padding: var(--space-4);
  overflow: auto;
  border-radius: 0;
  background: #f6f8fa;
  color: #24292f;
  white-space: pre;
  scrollbar-width: thin;
  tab-size: 2;
}

.tikzjax-source code {
  display: block;
  padding: 0;
  background: transparent;
  color: inherit;
  font-size: 0.9em;
  line-height: 1.65;
}

.tikz-token-comment { color: #6e7781; font-style: italic; }
.tikz-token-command { color: #0550ae; font-weight: 600; }
.tikz-token-math { color: #953800; }
.tikz-token-number { color: #8250df; }
.tikz-token-delimiter { color: #cf222e; }

[data-theme="dark"] .tikzjax-source pre {
  background: #0d1117;
  color: #c9d1d9;
}

[data-theme="dark"] .tikz-token-comment { color: #8b949e; }
[data-theme="dark"] .tikz-token-command { color: #79c0ff; }
[data-theme="dark"] .tikz-token-math { color: #ffa657; }
[data-theme="dark"] .tikz-token-number { color: #d2a8ff; }
[data-theme="dark"] .tikz-token-delimiter { color: #ff7b72; }

.tikzjax-source code::selection,
.tikzjax-source code *::selection {
  background: color-mix(in srgb, var(--color-primary) 28%, transparent);
}

.tikzjax-error {
  margin: 0;
  color: #9f2d20;
  text-align: center;
}

[data-theme="dark"] .tikzjax-figure {
  border-color: color-mix(in srgb, var(--color-border) 75%, #ffffff 25%);
}

@media (max-width: 767px) {
  .tikzjax-output {
    justify-content: flex-start;
    padding: var(--space-4);
  }
}

@media (prefers-reduced-motion: reduce) {
  .tikzjax-source summary,
  .tikzjax-source summary::before {
    transition: none;
  }
}

@media print {
  .tikzjax-figure {
    break-inside: avoid;
    border-color: #cccccc;
    box-shadow: none;
  }

  .tikzjax-source {
    display: none;
  }
}