/* cohdl.org — long-form styles for docs, blog and use-case pages.
   Loaded AFTER style.css; shares its tokens and code-specimen classes. */

/* ------------------------------------------------------------- page head */

.page-head {
  margin-bottom: clamp(2rem, 6vw, 3.2rem);
}

.crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  align-items: center;
  margin: 0 0 1.1rem;
  padding: 0;
  color: var(--text-tertiary);
  font-size: 0.85rem;
  list-style: none;
}

.crumbs a {
  color: var(--text-tertiary);
  text-decoration: none;
}

.crumbs a:hover {
  color: var(--accent);
}

.crumbs li:not(:last-child)::after {
  margin-left: 0.45rem;
  color: var(--border-strong);
  content: "/";
}

.page-title {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 5.4vw, 3rem);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.page-title em {
  color: var(--accent);
  font-style: normal;
}

.page-lede {
  max-width: 62ch;
  margin: 0;
  color: var(--text-secondary);
  font-size: clamp(1rem, 2.1vw, 1.12rem);
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
  margin: 1.1rem 0 0;
  color: var(--text-tertiary);
  font-size: 0.88rem;
}

.post-meta .sep {
  color: var(--border-strong);
}

/* ----------------------------------------------------------------- prose */

.prose {
  max-width: 70ch;
}

.prose--wide {
  max-width: none;
}

.prose h2 {
  margin: 2.6rem 0 0.9rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--border-subtle);
  font-size: 1.45rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.prose h3 {
  margin: 1.9rem 0 0.6rem;
  font-size: 1.12rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.prose h4 {
  margin: 1.5rem 0 0.5rem;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.005em;
}

.prose p,
.prose ul,
.prose ol {
  margin: 0 0 1.05rem;
  color: var(--text-secondary);
}

.prose ul,
.prose ol {
  padding-left: 1.4rem;
}

.prose li {
  margin-bottom: 0.4rem;
}

.prose li::marker {
  color: var(--text-tertiary);
}

.prose strong {
  color: var(--text);
  font-weight: 600;
}

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

.prose code {
  padding: 0.1em 0.35em;
  border-radius: 6px;
  background: var(--surface-2);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.86em;
}

.prose a code {
  color: inherit;
}

.prose pre {
  margin: 1.3rem 0;
  padding: 1.1rem 1.2rem;
  overflow-x: auto;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, var(--surface-1), rgb(10 16 24 / 92%));
}

.prose pre code {
  padding: 0;
  background: none;
  color: var(--text-secondary);
  font: 0.85rem/1.7 var(--font-mono);
}

.prose .code-figure {
  margin: 1.3rem 0;
}

.prose .code-figure pre {
  margin: 0;
  border: 0;
  border-radius: 0;
  background: none;
}

.prose blockquote {
  margin: 1.3rem 0;
  padding: 0.2rem 0 0.2rem 1.1rem;
  border-left: 2px solid var(--border-strong);
  color: var(--text-secondary);
}

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

.prose hr {
  height: 1px;
  margin: 2.4rem 0;
  border: 0;
  background: var(--border-subtle);
}

.prose figure {
  margin: 1.6rem 0;
}

.prose figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
}

.prose figcaption {
  margin-top: 0.6rem;
  color: var(--text-tertiary);
  font-size: 0.85rem;
}

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

.table-scroll {
  margin: 1.3rem 0;
  overflow-x: auto;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.prose th {
  padding: 0.6rem 0.9rem;
  border-bottom: 1px solid var(--border);
  background: rgb(19 29 42 / 55%);
  color: var(--text-secondary);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-align: left;
  text-transform: uppercase;
  white-space: nowrap;
}

.prose td {
  padding: 0.55rem 0.9rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  vertical-align: top;
}

.prose tr:last-child td {
  border-bottom: 0;
}

.prose td code,
.prose th code {
  white-space: nowrap;
}

/* --------------------------------------------------------------- callout */

.callout {
  margin: 1.3rem 0;
  padding: 0.9rem 1.1rem;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
  background: var(--surface-1);
  color: var(--text-secondary);
  font-size: 0.94rem;
}

.callout > :first-child {
  margin-top: 0;
}

.callout > :last-child {
  margin-bottom: 0;
}

.callout-title {
  display: block;
  margin-bottom: 0.3rem;
  color: var(--text);
  font-weight: 600;
}

/* ------------------------------------------------------------ card grids */

.card-grid {
  display: grid;
  gap: 1.1rem;
  margin: 0;
  padding: 0;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  list-style: none;
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 1.25rem 1.35rem;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  background: var(--surface-1);
  transition:
    border-color 0.15s var(--ease),
    transform 0.15s var(--ease);
}

.card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

.card-kicker {
  margin: 0 0 0.5rem;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.card-title {
  margin: 0 0 0.45rem;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

/* The whole card is the click target. */
.card-title a {
  color: var(--text);
  text-decoration: none;
}

.card-title a::after {
  position: absolute;
  inset: 0;
  content: "";
}

.card:hover .card-title a {
  color: var(--accent-hover);
}

.card-body {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.93rem;
}

.card-meta {
  margin: 0.8rem 0 0;
  color: var(--text-tertiary);
  font-size: 0.83rem;
}

/* ------------------------------------------------------------- post list */

.post-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.post-item {
  position: relative;
  padding: 1.4rem 0;
  border-top: 1px solid var(--border-subtle);
}

.post-item:last-child {
  border-bottom: 1px solid var(--border-subtle);
}

.post-item-date {
  margin: 0 0 0.3rem;
  color: var(--text-tertiary);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.post-item-title {
  margin: 0 0 0.4rem;
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.015em;
}

.post-item-title a {
  color: var(--text);
  text-decoration: none;
}

.post-item-title a::after {
  position: absolute;
  inset: 0;
  content: "";
}

.post-item:hover .post-item-title a {
  color: var(--accent-hover);
}

.post-item-excerpt {
  max-width: 64ch;
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* --------------------------------------------------------- rfc index */

.rfc-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.rfc-item {
  position: relative;
  display: grid;
  gap: 0.15rem 1.4rem;
  padding: 1rem 0;
  border-top: 1px solid var(--border-subtle);
  grid-template-columns: 5.2rem 1fr;
}

.rfc-item:last-child {
  border-bottom: 1px solid var(--border-subtle);
}

.rfc-no {
  grid-row: span 2;
  padding-top: 0.15rem;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
}

.rfc-item-title {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.rfc-item-title a {
  color: var(--text);
  text-decoration: none;
}

.rfc-item-title a::after {
  position: absolute;
  inset: 0;
  content: "";
}

.rfc-item:hover .rfc-item-title a {
  color: var(--accent-hover);
}

.rfc-item-summary {
  grid-column: 2;
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.92rem;
}

@media (max-width: 560px) {
  .rfc-item {
    grid-template-columns: 1fr;
  }

  .rfc-no {
    grid-row: auto;
  }

  .rfc-item-summary {
    grid-column: 1;
  }
}

/* -------------------------------------------------------- fact panels */

.fact-panel {
  margin: 1.6rem 0;
  padding: 1.2rem 1.35rem;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  background: var(--surface-1);
}

.fact-panel dl {
  display: grid;
  gap: 0.7rem 1.6rem;
  margin: 0;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
}

.fact-panel dt {
  color: var(--text-tertiary);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.fact-panel dd {
  margin: 0.15rem 0 0;
  color: var(--text);
  font-size: 0.95rem;
}

/* -------------------------------------------------------- pager / next */

.pager {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  justify-content: space-between;
  margin-top: 3rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.93rem;
}

.pager a {
  text-decoration: none;
}

.pager a:hover {
  text-decoration: underline;
}