/* markdown.css */
.markdown-body {
  font-family: var(--font-mono);
  color: var(--fg);
  background: transparent;
  line-height: 1.7;
  font-size: 1.05rem;
  --media-max-width: 720px;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
  font-weight: 700;
  margin-top: 1.2em;
  margin-bottom: 0.6em;
  color: var(--fg-strong);
  line-height: 1.25;
}

.markdown-body h1 {
  font-size: 1.8rem;
  margin-top: 1.8em;
}

.markdown-body h2 {
  font-size: 1.45rem;
}

.markdown-body h3 {
  font-size: 1.2rem;
}

.markdown-body h4 {
  font-size: 1.08rem;
}

.markdown-body h5 {
  font-size: 0.95rem;
}

.markdown-body h6 {
  font-size: 0.9rem;
  letter-spacing: 0.01em;
}

.markdown-body p {
  margin: 0 0 0.8em 0;
}

.markdown-body ul, .markdown-body ol {
  margin: 1em 0;
  padding-left: 1.8em;
}

.markdown-body ul ul,
.markdown-body ol ol,
.markdown-body ul ol,
.markdown-body ol ul {
  margin-left: 0.25em;
}

.markdown-body :not(pre) > code {
  font-family: var(--font-mono, ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);
  background: var(--surface-soft);
  color: var(--fg);
  border-radius: 4px;
}

.markdown-body pre:not(:where(.expressive-code *)) {
  font-family: var(--font-mono, ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);
  background: var(--surface-soft);
  color: var(--fg);
  border-radius: 4px;
  padding: 1em 1.2em;
  overflow-x: auto;
  margin: 1.5em 0;
  text-indent: 0;
  line-height: 1.4;
  border: 1px solid var(--border-soft);
}

.markdown-body pre:not(:where(.expressive-code *)) code {
  background: transparent;
  color: inherit;
  text-indent: 0;
  margin-left: 0;
  display: block;
  font-size: 0.84em;
  padding: 0;
  line-height: 1.4;
}

.markdown-body :not(pre) > code {
  padding: 0.15em 0.3em;
  font-size: 0.85em;
}

.markdown-body pre:not(:where(.expressive-code *)),
.markdown-body :not(pre) > code,
.markdown-body pre:not(:where(.expressive-code *)) code {
  white-space: pre-wrap;
  word-break: break-word;
  overflow-wrap: break-word;
}

.markdown-body .expressive-code {
  margin: 1.5em 0;
}

/* --- KaTeX display math: scrollable on overflow --- */
.markdown-body .katex-display {
  overflow-x: auto;
  overflow-y: visible;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) var(--surface-elev);
  padding: 0.5em 0;
}

.markdown-body .katex-display::-webkit-scrollbar { height: 8px; }
.markdown-body .katex-display::-webkit-scrollbar-track { background: var(--surface-elev); border-radius: 6px; }
.markdown-body .katex-display::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 6px; }
.markdown-body .katex-display::-webkit-scrollbar-thumb:hover { background: var(--fg-subtle); }

.markdown-body .md-table-wrap {
  --table-right-bleed: 0px;
  --table-base-width: calc(100% - var(--table-right-bleed));
  width: 100%;
  margin: 0.7em 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) var(--surface-elev);
}

@media (min-width: 1024px) {
  .markdown-body .md-table-wrap {
    --table-edge-gap: calc(var(--side-gutter, 1rem) * 2);
    --table-right-bleed: max(0px, calc((100vw - var(--content-max-width, 800px)) / 2 + var(--side-gutter, 1rem) - var(--table-edge-gap)));
    width: calc(100% + var(--table-right-bleed));
    max-width: calc(100vw - var(--table-edge-gap));
  }
}

.markdown-body .md-table-wrap::-webkit-scrollbar { height: 8px; }
.markdown-body .md-table-wrap::-webkit-scrollbar-track { background: var(--surface-elev); border-radius: 6px; }
.markdown-body .md-table-wrap::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 6px; }
.markdown-body .md-table-wrap::-webkit-scrollbar-thumb:hover { background: var(--fg-subtle); }

.markdown-body .md-table-wrap > table {
  border-collapse: collapse;
  margin: 0;
  background: none;
  color: inherit;
  width: max-content;
  min-width: var(--table-base-width);
  table-layout: auto;
}

.markdown-body th, .markdown-body td {
  padding: 0.4em 0.6em;
  text-align: left;
  border: none;
  background: none;
  white-space: nowrap;
  overflow: visible;
  width: auto;
}

.markdown-body th {
  font-weight: 600;
  font-size: 0.95rem;
  border-bottom: 2px solid var(--border-strong);
  color: var(--fg-strong);
}

.markdown-body tr:not(:first-child) td {
  border-top: 1px solid var(--border-muted);
}

.markdown-body td:first-child,
.markdown-body th:first-child {
  padding-left: 0;
}

.markdown-body td:last-child,
.markdown-body th:last-child {
  padding-right: 0;
}

@media (max-width: 768px) {
  .markdown-body .md-table-wrap {
    border: 1px solid var(--border-muted);
    border-radius: 6px;
  }

  .markdown-body .md-table-wrap > table {
    min-width: 100%;
  }

  .markdown-body th,
  .markdown-body td {
    padding: 0.35em 0.5em;
    font-size: 0.85rem;
  }

  .markdown-body th:first-child,
  .markdown-body td:first-child { padding-left: 0.5em; }
  .markdown-body th:last-child,
  .markdown-body td:last-child { padding-right: 0.5em; }
}

.markdown-body blockquote {
  border-left: 3px solid var(--border-strong);
  background: transparent;
  color: var(--fg-soft);
  margin: 1.5em 0;
  padding: 0.5em 0 0.5em 0.75em;
  font-style: normal;
}

.markdown-body blockquote p {
  margin: 0;
}

.markdown-body a {
  color: var(--accent);
  text-decoration: none;
}

.markdown-body a:hover {
  text-decoration: underline;
}

.markdown-body img {
  display: block;
  max-width: min(100%, var(--media-max-width));
  height: auto;
  width: auto;
  margin: 1.5rem auto;
  border-radius: 8px;
  box-shadow: 0 1px 8px rgba(var(--shadow-rgb), 0.2);
}

.markdown-body svg {
  display: block;
  height: auto;
  width: 100%;
  max-width: 100%;
  margin: 1.5rem auto;
  overflow: visible;
}

.markdown-body img[src$='.svg'],
.markdown-body img[src*='.svg?'] {
  border-radius: 0;
  box-shadow: none;
}

:root[data-theme='dark'] .markdown-body svg,
:root[data-theme='dark'] .markdown-body img[src$='.svg'],
:root[data-theme='dark'] .markdown-body img[src*='.svg?'] {
  filter: invert(0.94) hue-rotate(180deg) saturate(0.92) contrast(0.95);
}

/* Keep KaTeX's internal delimiter SVGs on KaTeX's own layout rules. */
.markdown-body .katex svg {
  display: block;
  width: 100%;
  height: inherit;
  margin: 0;
  max-width: none;
  border-radius: 0;
  box-shadow: none;
  overflow: visible;
}

:root[data-theme='dark'] .markdown-body .katex svg {
  filter: none;
}

@media (max-width: 600px) {
  .markdown-body {
    --media-max-width: 100%;
    font-size: 0.94rem;
    line-height: 1.6;
  }

  .markdown-body h1 {
    font-size: 1.4rem;
    margin-top: 1.4em;
  }

  .markdown-body h2 {
    font-size: 1.2rem;
  }

  .markdown-body h3 {
    font-size: 1.05rem;
  }

  .markdown-body h4 {
    font-size: 0.98rem;
  }

  .markdown-body h5 {
    font-size: 0.9rem;
  }

  .markdown-body h6 {
    font-size: 0.86rem;
  }

  .markdown-body ul,
  .markdown-body ol {
    padding-left: 1.1em;
    margin: 0.7em 0;
  }

  .markdown-body ul ul,
  .markdown-body ol ol,
  .markdown-body ul ol,
  .markdown-body ol ul {
    margin-left: 0;
    padding-left: 1em;
  }

  .markdown-body li {
    margin: 0.15em 0;
  }

  .markdown-body blockquote {
    margin: 1em 0;
    padding: 0.4em 0 0.4em 0.6em;
  }

  .markdown-body pre:not(:where(.expressive-code *)) {
    padding: 0.7em 0.8em;
    margin: 1em -0.4em;
    border-radius: 6px;
  }

  .markdown-body pre:not(:where(.expressive-code *)) code {
    font-size: 0.78em;
  }

  .markdown-body :not(pre) > code {
    font-size: 0.82em;
  }

  .markdown-body .callout {
    padding: 0.5em 0.7em;
  }

  .sidenote {
    margin: 0.3em 0 0.3em 0.5em;
    padding: 0.35em 0.6em;
    font-size: 0.82rem;
  }
}

/* Markdown galleries */
.md-gallery {
  margin: 1.5rem 0;
}

.md-gallery-thumb {
  position: relative;
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.md-gallery-thumb img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 1px 8px rgba(var(--shadow-rgb), 0.2);
}

@media (min-width: 1024px) {
  .markdown-body img {
    max-width: var(--media-max-width);
    width: auto;
  }

  .markdown-body .md-gallery-thumb img {
    width: 100%;
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
    transform: none;
  }
}

.md-gallery-thumb__badge {
  position: absolute;
  right: 0.75rem;
  bottom: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background: var(--overlay-control-bg);
  border: 1px solid var(--overlay-control-border);
  color: var(--overlay-text);
  font-size: 0.85rem;
  line-height: 1.2;
  backdrop-filter: blur(6px);
}

.md-gallery-overlay[hidden] {
  display: none;
}

.md-gallery-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
}

.md-gallery-overlay__backdrop {
  position: absolute;
  inset: 0;
  background: var(--overlay-bg);
}

.md-gallery-overlay__panel {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  box-sizing: border-box;
}

.md-gallery-overlay__content {
  position: relative;
  width: min(1100px, 100%);
  max-height: calc(100vh - 3rem);
  display: grid;
  grid-template-rows: 1fr auto auto;
  gap: 0.75rem;
}

.md-gallery-overlay__img {
  width: 100%;
  height: 100%;
  max-height: calc(100vh - 8rem);
  object-fit: contain;
  border-radius: 12px;
  background: rgba(var(--shadow-rgb), 0.18);
}

.md-gallery-overlay__caption {
  color: var(--overlay-text);
  font-size: 0.95rem;
  text-align: center;
}

.md-gallery-overlay__counter {
  color: var(--overlay-text-muted);
  font-size: 0.85rem;
  text-align: center;
}

.md-gallery-overlay__close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  border: 1px solid var(--overlay-control-border);
  background: var(--overlay-control-bg);
  color: var(--overlay-text);
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
}

.md-gallery-overlay__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  border-radius: 999px;
  border: 1px solid var(--overlay-control-border);
  background: var(--overlay-control-bg);
  color: var(--overlay-text);
  font-size: 34px;
  line-height: 1;
  cursor: pointer;
}

.md-gallery-overlay__nav--prev {
  left: 1rem;
}

.md-gallery-overlay__nav--next {
  right: 1rem;
}

/* --- Callout blockquotes --- */
.markdown-body .callout {
  border-left-width: 3px;
  border-radius: 0 4px 4px 0;
  padding: 0.6em 0.9em;
  background: var(--surface-note);
  transition: background-color 0.68s ease, border-color 0.68s ease, color 0.68s ease;
}

.markdown-body .callout .callout-label {
  font-family: var(--font-mono);
  font-size: 0.82em;
  letter-spacing: 0.04em;
  text-transform: lowercase;
  transition: color 0.68s ease;
}

.markdown-body .callout-update {
  border-left-color: var(--accent);
}
.markdown-body .callout-update .callout-label { color: var(--accent); }

.markdown-body .callout-tldr {
  border-left-color: var(--cat-bio);
}
.markdown-body .callout-tldr .callout-label { color: var(--cat-bio); }

.markdown-body .callout-note {
  border-left-color: var(--cat-gpu);
}
.markdown-body .callout-note .callout-label { color: var(--cat-gpu); }

.markdown-body .callout-warning {
  border-left-color: var(--cat-ml);
}
.markdown-body .callout-warning .callout-label { color: var(--cat-ml); }

/* --- Tufte-style sidenotes --- */
.markdown-body {
  counter-reset: sidenote-counter;
}

.sidenote-number {
  counter-increment: sidenote-counter;
  cursor: pointer;
}

.sidenote-number::after {
  content: counter(sidenote-counter);
  font-size: 0.7em;
  vertical-align: super;
  line-height: 0;
  color: var(--accent, #4a7c96);
  font-family: var(--font-mono);
  margin-left: 1px;
}

.sidenote-toggle {
  display: none;
}

/* Default: inline collapsible (mobile + medium screens) */
.sidenote {
  display: none;
  float: none;
  width: auto;
  margin: 0.4em 0 0.4em 1em;
  padding: 0.4em 0.75em;
  background: var(--surface-note);
  border-left: 2px solid var(--border-muted);
  border-radius: 0 4px 4px 0;
  font-size: 0.85rem;
  line-height: 1.45;
  color: var(--fg-soft);
}

.sidenote::before {
  content: counter(sidenote-counter) ". ";
  font-family: var(--font-mono);
  font-size: 0.85em;
  color: var(--accent, #4a7c96);
}

.sidenote-toggle:checked + .sidenote {
  display: block;
}

/* Wide screens: float into the right margin */
@media (min-width: 1280px) {
  .sidenote {
    display: block;
    float: right;
    clear: right;
    width: 200px;
    margin: 0.2rem 0 0.5rem -200px;
    margin-right: calc(-200px - 2rem);
    padding: 0;
    background: none;
    border-left: none;
    border-radius: 0;
    font-size: 0.8rem;
    color: var(--fg-faint);
    position: relative;
  }

  .sidenote-number {
    cursor: default;
  }

  /* Hide checkbox behavior — always visible */
  .sidenote-toggle:checked + .sidenote {
    display: block;
  }
}