/* ==========================================================================
   Tidepool · article typography, code, math, media
   ========================================================================== */

.prose {
  width: 100%;
  max-width: var(--prose-width);
  margin-inline: auto;
  min-width: 0;
  contain: paint;
  color: var(--text);
  font-family: var(--font-article);
  font-size: clamp(1rem, 0.965rem + 0.14vw, 1.075rem);
  line-height: 1.95;
  letter-spacing: 0.004em;
  overflow-wrap: break-word;
}

.prose > :first-child {
  margin-top: 0 !important;
}

.prose > :last-child {
  margin-bottom: 0 !important;
}

.prose p {
  margin: 1.15em 0;
}

.prose h1,
.prose h2,
.prose h3,
.prose h4,
.prose h5,
.prose h6 {
  position: relative;
  margin: 2.1em 0 0.75em;
  color: var(--text);
  font-family: var(--font-ui);
  line-height: 1.35;
  letter-spacing: -0.02em;
  scroll-margin-top: calc(var(--nav-height) + 1.5rem);
}

.prose h1 {
  font-size: 1.85em;
}

.prose h2 {
  padding-left: 0.85rem;
  font-size: 1.52em;
}

.prose h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.22em;
  width: 0.26rem;
  height: 1.05em;
  border-radius: var(--radius-full);
  background: linear-gradient(180deg, var(--primary), var(--accent));
}

.prose h3 {
  font-size: 1.24em;
}

.prose h4 {
  font-size: 1.08em;
}

.prose h5,
.prose h6 {
  font-size: 1em;
  color: var(--text-soft);
}

.prose a {
  color: var(--primary);
  text-decoration: underline;
  text-decoration-color: oklch(0.62 0.13 var(--hue) / 0.35);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--dur-fast) var(--ease), text-decoration-color var(--dur-fast) var(--ease);
}

.prose a:hover {
  color: var(--primary-strong);
  text-decoration-color: var(--primary);
}

.prose strong {
  color: var(--text);
  font-weight: 800;
}

.prose em {
  color: var(--text-soft);
}

.prose del {
  color: var(--text-mute);
}

.prose hr {
  height: 1px;
  margin: 2.6em 0;
  border: 0;
  background: linear-gradient(90deg, transparent, var(--border-strong), transparent);
}

.prose ul,
.prose ol {
  margin: 1.1em 0;
  padding-left: 1.55em;
}

.prose ul {
  list-style: disc;
}

.prose ol {
  list-style: decimal;
}

.prose li {
  margin: 0.4em 0;
  padding-left: 0.15em;
}

.prose li::marker {
  color: var(--primary);
  font-weight: 700;
}

.prose li > ul,
.prose li > ol {
  margin: 0.35em 0;
}

.prose blockquote {
  position: relative;
  margin: 1.7em 0;
  padding: 0.9em 1.15em;
  border-left: 3px solid var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--primary-faint);
  color: var(--text-soft);
}

.prose blockquote p {
  margin: 0.35em 0;
}

.prose blockquote p:first-child {
  margin-top: 0;
}

.prose blockquote p:last-child {
  margin-bottom: 0;
}

.prose blockquote strong {
  color: var(--primary-strong);
}

/* -- inline code --------------------------------------------------------- */

.prose code {
  padding: 0.14em 0.4em;
  border: 1px solid var(--border);
  border-radius: 0.4em;
  background: var(--primary-faint);
  color: var(--primary-strong);
  font-family: var(--font-mono);
  font-size: 0.86em;
  word-break: break-word;
}

.prose h2 code,
.prose h3 code,
.prose h4 code {
  font-size: 0.82em;
}

/* -- code blocks --------------------------------------------------------- */

.prose figure.highlight,
.prose .highlight {
  position: relative;
  margin: 1.7em 0;
  border: 1px solid oklch(0.3 0.03 var(--hue));
  border-radius: var(--radius-md);
  background: var(--code-bg);
  color: var(--code-text);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.prose .highlight table {
  width: 100%;
  margin: 0;
  border: 0;
  border-collapse: collapse;
  background: transparent;
  display: block;
  overflow: visible;
}

.prose .highlight tbody,
.prose .highlight tr,
.prose .highlight td {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
}

.prose .highlight .gutter {
  display: none;
}

.prose .highlight .code,
.prose .highlight td.code {
  display: block;
  width: 100%;
}

.prose .highlight pre {
  margin: 0;
  padding: 2.1rem 1.1rem 1.1rem;
  overflow-x: auto;
  background: transparent;
  color: var(--code-text);
  font-family: var(--font-mono);
  font-size: 0.84rem;
  line-height: 1.72;
  tab-size: 2;
}

.prose .highlight pre::-webkit-scrollbar {
  height: 8px;
}

.prose .highlight pre::-webkit-scrollbar-thumb {
  background: oklch(0.45 0.03 var(--hue));
  border-radius: 999px;
}

.prose .highlight code {
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font-size: inherit;
  white-space: pre;
}

.code-lang {
  position: absolute;
  top: 0.62rem;
  left: 0.95rem;
  z-index: 2;
  color: var(--code-mute);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  pointer-events: none;
}

.code-copy {
  position: absolute;
  top: 0.5rem;
  right: 0.55rem;
  z-index: 2;
  display: grid;
  place-items: center;
  width: 1.9rem;
  height: 1.9rem;
  border: 1px solid oklch(0.36 0.03 var(--hue));
  border-radius: 0.5rem;
  background: oklch(0.26 0.025 var(--hue));
  color: var(--code-mute);
  opacity: 0;
  transition: opacity var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease),
    background var(--dur-fast) var(--ease);
}

.highlight:hover .code-copy,
.code-copy:focus-visible {
  opacity: 1;
}

.code-copy:hover {
  color: var(--code-text);
  background: oklch(0.32 0.03 var(--hue));
}

.code-copy.is-copied {
  color: oklch(0.78 0.15 150);
}

.code-copy .icon {
  width: 0.95rem;
  height: 0.95rem;
}

/* Hexo / highlight.js token colours */
.highlight .comment,
.highlight .quote {
  color: oklch(0.62 0.02 var(--hue));
  font-style: italic;
}

.highlight .keyword,
.highlight .selector-tag,
.highlight .addition {
  color: oklch(0.76 0.14 330);
}

.highlight .string,
.highlight .meta .string {
  color: oklch(0.78 0.13 150);
}

.highlight .number,
.highlight .literal,
.highlight .built_in,
.highlight .type {
  color: oklch(0.8 0.13 85);
}

.highlight .title,
.highlight .title.function_,
.highlight .section {
  color: oklch(0.78 0.12 240);
}

.highlight .attr,
.highlight .attribute,
.highlight .variable,
.highlight .template-variable {
  color: oklch(0.78 0.13 45);
}

.highlight .meta,
.highlight .meta .keyword {
  color: oklch(0.72 0.1 275);
}

.highlight .tag,
.highlight .name,
.highlight .selector-id,
.highlight .selector-class {
  color: oklch(0.77 0.12 200);
}

.highlight .regexp,
.highlight .link {
  color: oklch(0.78 0.12 110);
}

.highlight .deletion {
  color: oklch(0.7 0.16 25);
}

.highlight .emphasis {
  font-style: italic;
}

.highlight .strong {
  font-weight: 700;
}

/* -- media --------------------------------------------------------------- */

.prose img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 1.8em auto;
  border-radius: var(--radius-md);
  cursor: zoom-in;
}

.prose figure {
  margin: 1.8em 0;
}

.prose figure img {
  margin: 0 auto;
}

.prose figcaption {
  margin-top: 0.5em;
  color: var(--text-mute);
  font-size: 0.8em;
  text-align: center;
}

.prose video,
.prose iframe {
  max-width: 100%;
  border-radius: var(--radius-md);
}

/* -- tables -------------------------------------------------------------- */

.prose table {
  display: block;
  width: 100%;
  max-width: 100%;
  margin: 1.7em 0;
  overflow-x: auto;
  border-collapse: collapse;
  border-spacing: 0;
  font-family: var(--font-ui);
  font-size: 0.86em;
  white-space: nowrap;
}

.prose thead {
  background: var(--card-bg-soft);
}

.prose th,
.prose td {
  padding: 0.6em 0.85em;
  border: 1px solid var(--border);
  text-align: left;
}

.prose th {
  font-weight: 800;
  color: var(--text);
}

.prose tbody tr:nth-child(even) {
  background: var(--primary-faint);
}

/* -- math ---------------------------------------------------------------- */

.prose .katex {
  font-size: 1.06em;
}

.prose .katex-display {
  max-width: 100%;
  margin: 1.5em 0;
  padding: 0.4em 0 0.55em;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: thin;
  scrollbar-color: var(--primary) var(--primary-faint);
  -webkit-overflow-scrolling: touch;
}

.prose .katex-display::-webkit-scrollbar {
  height: 7px;
}

.prose .katex-display::-webkit-scrollbar-track {
  background: var(--primary-faint);
  border-radius: 999px;
}

.prose .katex-display::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 999px;
}

@media (max-width: 1180px) {
  .prose .katex-display > .katex > .katex-html > .tag {
    position: relative !important;
    right: 0 !important;
    margin-left: 0.6rem;
  }
}

.katex-error {
  color: var(--accent-strong) !important;
  background: var(--accent-soft);
  border-radius: 4px;
  padding: 0 0.2em;
}

/* -- misc ---------------------------------------------------------------- */

.prose kbd {
  display: inline-block;
  padding: 0.15em 0.45em;
  border: 1px solid var(--border-strong);
  border-bottom-width: 2px;
  border-radius: 0.4em;
  background: var(--card-bg-soft);
  font-family: var(--font-mono);
  font-size: 0.82em;
}

.prose details {
  margin: 1.5em 0;
  padding: 0.9em 1.1em;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--card-bg-soft);
}

.prose summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--text);
}

.prose details[open] summary {
  margin-bottom: 0.6em;
}

.prose input[type="checkbox"] {
  accent-color: var(--primary);
  margin-right: 0.4em;
}

.prose .task-list-item {
  list-style: none;
  margin-left: -1.2em;
}

.prose mark {
  background: var(--accent-soft);
  color: inherit;
  padding: 0 0.15em;
  border-radius: 3px;
}

.prose .heading-anchor {
  margin-left: 0.4em;
  color: var(--primary);
  font-family: var(--font-mono);
  font-size: 0.72em;
  font-weight: 400;
  opacity: 0;
  text-decoration: none;
  transition: opacity var(--dur-fast) var(--ease);
}

.prose h2:hover .heading-anchor,
.prose h3:hover .heading-anchor,
.prose h4:hover .heading-anchor,
.prose .heading-anchor:focus-visible {
  opacity: 1;
}

.prose .footnotes {
  margin-top: 2.6em;
  padding-top: 1.1em;
  border-top: 1px solid var(--divider);
  color: var(--text-soft);
  font-size: 0.84em;
}

.prose .footnotes ol {
  padding-left: 1.4em;
}

.prose .footnotes li {
  margin: 0.3em 0;
}

.prose .footnote-ref a,
.prose .footnote-backref {
  text-decoration: none;
  font-weight: 700;
}

/* -- mobile article ------------------------------------------------------ */

@media (max-width: 760px) {
  .prose {
    font-size: 1rem;
    line-height: 1.85;
  }

  .prose h2 {
    font-size: 1.35em;
  }

  .prose h3 {
    font-size: 1.16em;
  }

  .prose .highlight pre {
    font-size: 0.78rem;
    padding: 2rem 0.85rem 0.95rem;
  }

  .code-copy {
    opacity: 1;
  }

  .prose .katex-display {
    font-size: 0.94em;
  }

  .prose table {
    font-size: 0.8em;
  }
}