/* Article body typography, MDX components and code highlighting. */

.prose {
  font-size: var(--step-1);
  line-height: 1.75;
  color: var(--ink);
  /* Articles without a cover image would otherwise run the dek straight into the first
     paragraph. */
  margin-top: var(--space-6);
}

/* The cover already provides its own breathing room. */
.article__cover + .prose {
  margin-top: 0;
}

.prose > * + * {
  margin-top: var(--space-4);
}

.prose h2,
.prose h3,
.prose h4 {
  line-height: 1.28;
  letter-spacing: -0.018em;
  font-weight: 680;
  text-wrap: balance;
}

.prose h2 {
  font-size: var(--step-3);
  margin-top: var(--space-7);
}

.prose h3 {
  font-size: var(--step-2);
  margin-top: var(--space-6);
}

.prose h4 {
  font-size: var(--step-1);
  margin-top: var(--space-5);
}

.prose h2 + *,
.prose h3 + *,
.prose h4 + * {
  margin-top: var(--space-3);
}

.prose a {
  color: var(--accent-text);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.prose a:hover {
  text-decoration-thickness: 2px;
}

.prose strong {
  font-weight: 680;
}

.prose ul,
.prose ol {
  padding-inline-start: 1.4em;
}

.prose li + li {
  margin-top: var(--space-2);
}

.prose li > ul,
.prose li > ol {
  margin-top: var(--space-2);
}

.prose blockquote {
  padding-inline-start: var(--space-4);
  border-inline-start: 3px solid var(--line-strong);
  color: var(--ink-soft);
  font-style: italic;
}

.prose hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: var(--space-6) 0;
}

.prose img {
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--step-0);
  display: block;
  overflow-x: auto;
}

.prose th,
.prose td {
  border: 1px solid var(--line);
  padding: var(--space-2) var(--space-3);
  text-align: start;
}

.prose th {
  background: var(--surface-sunk);
  font-weight: 620;
}

.prose :not(pre) > code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--surface-sunk);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.1em 0.34em;
}

/* --------------------------------------------------------- code + shiki */

.prose pre {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  line-height: 1.6;
  background: var(--surface-sunk);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--space-4);
  overflow-x: auto;
  tab-size: 2;
}

.prose pre code {
  font: inherit;
  background: none;
  border: 0;
  padding: 0;
}

.prose pre.code-block {
  position: relative;
  padding-top: var(--space-6);
}

.prose pre.code-block::before {
  content: attr(data-lang);
  position: absolute;
  inset-inline-start: var(--space-4);
  top: var(--space-2);
  font-size: var(--step--2);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/*
 * Shiki dual themes: light by default, dark via the theme attribute or the OS.
 *
 * Only `color` comes from shiki. Its background variables (`--shiki-light-bg`,
 * `--shiki-dark-bg`) are declared on the <pre> and are inherited by every token span, so
 * setting `background-color: var(--shiki-*-bg)` here — which is what shiki's own dual-theme
 * snippet does — paints that colour behind *each token*: github-light's is #fff, which
 * showed up as a white rectangle behind every word of a code block. The block's background
 * is ours (`--surface-sunk`, below), so spans must add nothing.
 */
.prose .shiki,
.prose .shiki span {
  color: var(--shiki-light);
}

:root[data-theme='dark'] .prose .shiki,
:root[data-theme='dark'] .prose .shiki span {
  color: var(--shiki-dark);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) .prose .shiki,
  :root:not([data-theme='light']) .prose .shiki span {
    color: var(--shiki-dark);
  }
}

.prose .shiki {
  background: var(--surface-sunk);
}

/* ------------------------------------------------------------ components */

.prose .callout {
  border: 1px solid var(--line);
  border-inline-start: 3px solid var(--ink-faint);
  border-radius: var(--radius);
  background: var(--surface);
  padding: var(--space-4);
}

.prose .callout > * + * {
  margin-top: var(--space-3);
}

.prose .callout-title {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  font-weight: 620;
  letter-spacing: 0.01em;
  color: var(--ink-soft);
  margin: 0;
}

.prose .callout-note {
  border-inline-start-color: var(--ink-faint);
}

.prose .callout-tip {
  border-inline-start-color: var(--ok);
}

.prose .callout-warn {
  border-inline-start-color: var(--warn);
}

.prose .callout-danger {
  border-inline-start-color: var(--danger);
}

.prose .figure {
  margin: var(--space-6) 0;
}

.prose .figure img {
  width: 100%;
}

.prose .figure figcaption {
  margin-top: var(--space-2);
  font-size: var(--step--1);
  color: var(--ink-faint);
  text-align: center;
}

.prose .quote {
  border-inline-start: 3px solid var(--accent-text);
  font-style: normal;
}

.prose .quote footer {
  margin-top: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  font-style: normal;
  color: var(--ink-faint);
}

.prose .spoiler {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: var(--space-3) var(--space-4);
}

.prose .spoiler summary {
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--ink-soft);
}

.prose .spoiler[open] summary {
  margin-bottom: var(--space-3);
}

.prose .timeline {
  list-style: none;
  padding-inline-start: 0;
  border-inline-start: 2px solid var(--line);
  margin-inline-start: var(--space-2);
}

.prose .timeline-item {
  position: relative;
  padding-inline-start: var(--space-5);
  padding-bottom: var(--space-4);
}

.prose .timeline-item::before {
  content: '';
  position: absolute;
  inset-inline-start: -5px;
  top: 0.55em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

.prose .timeline-meta {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--ink-soft);
  margin-bottom: var(--space-1);
}

.prose .embed {
  display: flex;
  gap: var(--space-4);
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: var(--space-4);
  text-decoration: none;
}

.prose .embed:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-1);
}

.prose .embed img {
  width: 88px;
  height: 88px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex: none;
}

.prose .embed-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 0;
}

.prose .embed-title {
  font-weight: 620;
  color: var(--ink);
}

.prose .embed-desc {
  font-size: var(--step--1);
  color: var(--ink-soft);
}

/*
 * A video embed is a real player, on load — the same thing every other site ships. The 16:9 box
 * keeps it from shifting the layout while the iframe connects, and `loading="lazy"` (set in the
 * markup) keeps off-screen players off the wire.
 */
.prose .embed-video {
  margin: 0 0 var(--space-5);
}

.prose .embed-video .embed-frame {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #000;
}

.prose .embed-video .embed-caption {
  margin-top: var(--space-2);
  font-size: var(--step--1);
  color: var(--ink-soft);
}

@media (max-width: 780px) {
  .prose {
    font-size: var(--step-0);
  }
}