/* uxmeas.com /insights — Linear blog as structural reference, uxmeas tokens throughout.
   Chrome (.wrap, .nav, .site, .eyebrow, .lede, .h-display, .h-section)
   already lives in /shared.css. This file adds ONLY the layout patterns
   not covered by canonical classes.

   TOKENS ONLY. All values reference shared.css tokens — no hardcoded hex,
   no fake-token fallbacks, no parallel scale. */

/* ---- Narrow column for article reading measure ----------------------- */
.wrap-narrow {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding-inline: var(--gutter);
}

/* ---- Card / eyebrow primitives shared across cards ------------------- */
.card-eyebrow {
  font-family: var(--f-sans);
  font-size: var(--t-eyebrow);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin: 0 0 18px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.card-eyebrow .cat { color: var(--accent); }
.card-eyebrow .sep { color: var(--fg-4); }

.card-meta {
  font-family: var(--f-mono);
  font-size: var(--t-mono-label);
  letter-spacing: var(--ls-mono);
  text-transform: uppercase;
  color: var(--fg-3);
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}
.card-meta .sep { color: var(--fg-4); }

/* ---- Index hero ------------------------------------------------------ */
.insights-hero {
  padding: clamp(80px, 12vw, 160px) 0 clamp(48px, 7vw, 80px);
}
.insights-hero .eyebrow { margin-bottom: 28px; }
.insights-hero .h-display { margin: 0 0 24px; max-width: 18ch; text-wrap: balance; }
.insights-hero .lede { margin: 0; }

/* ---- Empty state ----------------------------------------------------- */
.insights-empty-section {
  padding: clamp(40px, 6vw, 80px) 0 clamp(80px, 12vw, 160px);
  border-top: 1px solid var(--rule);
}
.empty {
  color: var(--fg-3);
  font-style: italic;
  margin: 0;
}

/* ---- Featured post (Linear-style large card) ------------------------- */
.insights-featured {
  padding: clamp(32px, 5vw, 64px) 0 clamp(48px, 6vw, 80px);
  border-top: 1px solid var(--rule);
}
.featured-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 48px);
  text-decoration: none;
  color: inherit;
  padding: clamp(32px, 4vw, 56px) 0;
}
@media (min-width: 900px) {
  .featured-card {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    align-items: start;
  }
}
.featured-card:focus-visible { outline: none; box-shadow: var(--focus); }

.featured-cover {
  background: var(--bg-2);
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-radius: var(--radius);
}
.featured-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}
.featured-card:hover .featured-cover img { transform: scale(1.02); }

.featured-meta { display: flex; flex-direction: column; gap: 0; }
.featured-title {
  font-family: var(--f-sans);
  font-size: var(--t-h-section);
  font-weight: 500;
  letter-spacing: -0.022em;
  line-height: 1.1;
  color: var(--fg);
  margin: 0 0 16px;
  text-wrap: balance;
  transition: color 0.15s ease;
}
.featured-card:hover .featured-title { color: var(--accent); }
.featured-subtitle {
  font-family: var(--f-sans);
  font-size: var(--t-lede);
  line-height: 1.45;
  color: var(--fg-2);
  margin: 0 0 16px;
  max-width: 52ch;
}
.featured-excerpt {
  font-family: var(--f-sans);
  font-size: var(--t-body);
  line-height: 1.6;
  color: var(--fg-2);
  margin: 0 0 24px;
  max-width: 56ch;
}

/* ---- Post list (Linear-style stacked rows) --------------------------- */
.insights-list {
  padding: clamp(32px, 5vw, 64px) 0 clamp(96px, 14vw, 180px);
  border-top: 1px solid var(--rule);
}
.post-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.post-row + .post-row { border-top: 1px solid var(--rule); }
.post-row-link {
  display: block;
  padding: clamp(32px, 4vw, 48px) 0;
  text-decoration: none;
  color: inherit;
}
.post-row-link:focus-visible { outline: none; box-shadow: var(--focus); }

.post-row-meta { max-width: 64ch; }
.post-row-title {
  font-family: var(--f-sans);
  font-size: var(--t-h-sub);
  font-weight: 500;
  letter-spacing: -0.018em;
  line-height: 1.18;
  color: var(--fg);
  margin: 0 0 12px;
  text-wrap: balance;
  transition: color 0.15s ease;
}
.post-row-link:hover .post-row-title { color: var(--accent); }
.post-row-excerpt {
  font-family: var(--f-sans);
  font-size: var(--t-body);
  line-height: 1.6;
  color: var(--fg-2);
  margin: 0 0 18px;
}

/* ---- Article (post detail — Linear-shaped) --------------------------- */
.insight-post {
  padding: clamp(64px, 10vw, 120px) 0 clamp(96px, 14vw, 180px);
}

.post-header { margin-bottom: clamp(40px, 6vw, 64px); }
.post-eyebrow {
  margin-bottom: 28px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.post-eyebrow .back {
  color: var(--fg-3);
  text-decoration: none;
}
.post-eyebrow .back:hover { color: var(--accent); }
.post-eyebrow .cat { color: var(--accent); }
.post-eyebrow .sep { color: var(--fg-4); }

.post-header .post-title {
  margin: 0 0 20px;
  max-width: 22ch;
  text-wrap: balance;
}
.post-header .post-subtitle {
  margin: 0 0 28px;
  max-width: 56ch;
}

.post-byline {
  font-family: var(--f-mono);
  font-size: var(--t-mono-label);
  letter-spacing: var(--ls-mono);
  text-transform: uppercase;
  color: var(--fg-3);
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  padding-top: 20px;
  border-top: 1px solid var(--rule);
}
.post-byline .author { color: var(--fg-2); }
.post-byline .sep { color: var(--fg-4); }

/* ---- Cover image ----------------------------------------------------- */
.post-cover {
  margin: 0 0 clamp(40px, 6vw, 64px);
  padding: 0;
}
.post-cover img {
  width: 100%;
  max-height: 560px;
  object-fit: cover;
  display: block;
  border-radius: var(--radius);
  background: var(--bg-2);
}

/* ---- Article body (MDX output) --------------------------------------- */
.post-body {
  font-family: var(--f-sans);
  font-size: 18px;
  line-height: 1.7;
  color: var(--fg);
}
.post-body > * + * { margin-top: 1.4em; }
.post-body p,
.post-body ul,
.post-body ol,
.post-body blockquote,
.post-body pre,
.post-body figure { margin-bottom: 0; }

.post-body h2 {
  font-family: var(--f-sans);
  font-size: var(--t-h-section);
  font-weight: 500;
  letter-spacing: -0.022em;
  line-height: 1.15;
  color: var(--fg);
  margin-top: 2.2em;
  margin-bottom: 0.6em;
  text-wrap: balance;
}
.post-body h3 {
  font-family: var(--f-sans);
  font-size: var(--t-h-sub);
  font-weight: 500;
  letter-spacing: -0.018em;
  line-height: 1.22;
  color: var(--fg);
  margin-top: 1.8em;
  margin-bottom: 0.5em;
}
.post-body a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 0.2em;
  text-decoration-thickness: 1px;
}
.post-body a:hover { text-decoration-thickness: 2px; }
.post-body strong { font-weight: 600; color: var(--fg); }
.post-body em { font-style: italic; }

.post-body ul,
.post-body ol {
  padding-left: 1.5em;
}
.post-body li + li { margin-top: 0.4em; }

.post-body blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 1.4em;
  color: var(--fg-2);
  font-style: italic;
}

.post-body code {
  font-family: var(--f-mono);
  font-size: 0.92em;
  background: var(--bg-2);
  padding: 2px 6px;
  border-radius: var(--radius);
  color: var(--fg);
}
.post-body pre {
  background: var(--bg-2);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 20px 22px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.6;
}
.post-body pre code {
  background: none;
  padding: 0;
  font-size: 1em;
  border-radius: 0;
}

.post-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  margin: 1.8em 0;
  background: var(--bg-2);
}
.post-body hr {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 3em auto;
  max-width: 4em;
}

/* ---- Article footer -------------------------------------------------- */
.post-footer {
  margin-top: clamp(56px, 8vw, 96px);
  padding-top: clamp(28px, 3vw, 40px);
  border-top: 1px solid var(--rule);
}
.post-footer-back {
  margin: 0;
}
.post-footer-back a {
  color: var(--fg-3);
  text-decoration: none;
  font-family: var(--f-mono);
  font-size: var(--t-mono-label);
  letter-spacing: var(--ls-mono);
  text-transform: uppercase;
}
.post-footer-back a:hover { color: var(--accent); }