/* GTMOS Insights — blog at gtmos.run/insights */

:root {
  --amber: var(--accent-amber);
  --amber-dim: var(--accent-amber-dim);
  --amber-2: #E8590C;
  --amber-glow: rgba(194, 65, 12, 0.12);
  --green: #4ade80;
  --green-glow: rgba(74, 222, 128, 0.08);
  --bg-surface-3: #24242c;
  --sans: var(--font-sans);
  --mono: var(--font-mono);
  --serif: var(--font-serif);
  --dur: var(--dur-normal);
  --ease: var(--ease-standard);
}

/* Essay sub-nav (standalone essay pages) */
.blog-subnav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 16px 48px;
  background: rgba(11, 11, 13, 0.92);
  border-bottom: 1px solid var(--border-subtle);
  backdrop-filter: blur(8px);
}
.blog-subnav .logo {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 18px;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.blog-subnav .nav-right {
  display: flex;
  align-items: center;
  gap: 20px;
}
.blog-subnav .back {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
}
.blog-subnav .back:hover { color: var(--text-primary); }
.blog-subnav .nav-cta {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 10px 20px;
  background: var(--amber);
  color: var(--bg-base);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.blog-subnav .nav-cta:hover { background: var(--amber-2); }
.blog-subnav .arrow { transition: transform 0.2s; }
.blog-subnav .nav-cta:hover .arrow { transform: translateX(3px); }

/* Scroll progress */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0;
  background: var(--amber);
  z-index: 30;
}

/* Blog overview — card grid */
.insights-index {
  padding-bottom: 120px;
}
.insights-index a {
  text-decoration: none;
  color: inherit;
}

.insights-hero {
  position: relative;
  padding: 112px 0 64px;
  border-bottom: 1px solid var(--border-subtle);
  overflow: hidden;
}
.insights-hero-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(63, 63, 78, 0.4) 1px, transparent 1px),
    linear-gradient(90deg, rgba(63, 63, 78, 0.4) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 75% 65% at 20% 15%, #000 12%, transparent 78%);
}
.insights-hero-inner { position: relative; z-index: 1; }
.insights-eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin: 0 0 24px;
}
.insights-eyebrow .slash { color: var(--amber); }
.insights-hero h1 {
  font-size: clamp(40px, 5.5vw, 56px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.02;
  max-width: 14ch;
  margin: 0 0 22px;
  color: var(--text-primary);
}
.insights-hero h1 .secondary { color: var(--text-secondary); }
.insights-lede {
  font-size: 18px;
  line-height: 1.55;
  color: var(--text-secondary);
  max-width: 50ch;
  margin: 0;
}

.insights-main { padding: 56px 0 0; }
.insights-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 28px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}
.insights-toolbar b { color: var(--text-primary); font-weight: 500; }

.insights-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.post-card {
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  background: var(--bg-surface);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.post-card:hover {
  border-color: var(--amber-dim);
  box-shadow: 0 0 0 1px var(--amber-dim);
}
.post-card-link {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.post-thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--bg-base);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.post-thumb::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 70% at 50% 100%, var(--amber-glow), transparent 70%);
  opacity: 0.6;
}
.thumb-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--amber-2);
  background: rgba(11, 11, 13, 0.85);
  border: 1px solid var(--amber-dim);
  padding: 5px 9px;
  border-radius: 2px;
}

.thumb-stack {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 52%;
  max-width: 180px;
}
.thumb-stack span {
  display: block;
  height: 12px;
  border: 1px solid var(--border-strong);
  border-radius: 2px;
  background: var(--bg-surface-2);
}
.thumb-stack span.hot { border-color: var(--amber); background: var(--amber-glow); }

.thumb-signals {
  position: relative;
  z-index: 1;
  width: 68%;
  max-width: 200px;
  height: 88px;
}
.thumb-signals .dot {
  position: absolute;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--border-strong);
  border: 1px solid var(--border-strong);
}
.thumb-signals .dot:nth-child(1) { left: 0; top: 18%; }
.thumb-signals .dot:nth-child(2) { left: 0; top: 52%; }
.thumb-signals .dot:nth-child(3) { left: 0; top: 78%; }
.thumb-signals .dot.hot { left: 20%; top: 36%; background: var(--amber); border-color: var(--amber); }
.thumb-signals .hub {
  position: absolute;
  left: 44%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 32px;
  height: 32px;
  border: 1px solid var(--border-strong);
  border-radius: 3px;
  background: var(--bg-surface-2);
}
.thumb-signals .card {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 36%;
  height: 48px;
  border: 1px solid var(--amber-dim);
  border-radius: 3px;
  background: var(--amber-glow);
}

.post-card-body {
  padding: 22px 22px 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.post-card-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.post-num {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--amber);
}
.post-tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  border: 1px solid var(--border-subtle);
  padding: 3px 8px;
  border-radius: 2px;
}
.post-title {
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.18;
  margin: 0 0 12px;
  color: var(--text-primary);
}
.post-card:hover .post-title { color: var(--amber-2); }
.post-excerpt {
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.55;
  color: var(--text-secondary);
  margin: 0 0 18px;
  flex: 1;
}
.post-card-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
}
.post-meta {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}
.post-meta .sep { margin: 0 6px; color: var(--amber); }
.post-read {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  transition: color var(--dur) var(--ease);
}
.post-card:hover .post-read { color: var(--amber-2); }
.post-read .arrow { transition: transform var(--dur) var(--ease); }
.post-card:hover .post-read .arrow { transform: translateX(3px); }

@media (max-width: 820px) {
  .insights-hero { padding: 96px 0 48px; }
  .insights-grid { grid-template-columns: 1fr; }
  .post-card-foot { flex-direction: column; align-items: flex-start; gap: 8px; }
}

/* Legacy essay list (unused) — kept for post page compat */
.knowledge-page .home-hero {
  padding: 120px 0 40px;
  position: relative;
  overflow: hidden;
}
.knowledge-page .home-hero .grid {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(63, 63, 78, 0.45) 1px, transparent 1px),
    linear-gradient(90deg, rgba(63, 63, 78, 0.45) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 60% at 25% 25%, #000 10%, transparent 75%);
}
.knowledge-page .home-hero .inner { position: relative; z-index: 1; }
.knowledge-page .home-hero h1 {
  font-weight: 600;
  font-size: clamp(40px, 6vw, 72px);
  line-height: 1;
  letter-spacing: -0.035em;
  max-width: 15ch;
  margin: 26px 0 22px;
}
.knowledge-page .home-hero h1 .secondary { color: var(--text-secondary); }
.knowledge-page .home-hero .lede {
  font-size: 20px;
  color: var(--text-secondary);
  max-width: 56ch;
  line-height: 1.5;
}
.knowledge-page .home-hero .lede strong { color: var(--text-primary); font-weight: 500; }

.knowledge-page .essays { padding: 40px 0 20px; }
.knowledge-page .essays-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 6px;
}
.knowledge-page .essays-head .t {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.knowledge-page .essays-head .t b { color: var(--text-primary); font-weight: 400; }
.knowledge-page .essays-head .c {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-tertiary);
}

.knowledge-page .essay,
.essay {
  display: grid;
  grid-template-columns: 132px 1fr auto;
  gap: 36px;
  align-items: start;
  padding: 40px 20px 40px 18px;
  border-top: 1px solid var(--border-subtle);
  border-left: 2px solid transparent;
  transition: background var(--dur) var(--ease), border-left-color var(--dur) var(--ease);
  text-decoration: none;
  color: inherit;
}
.knowledge-page .essay:last-of-type,
.essay:last-of-type { border-bottom: 1px solid var(--border-subtle); }
.knowledge-page .essay:hover,
.essay:hover { background: var(--bg-surface); border-left-color: var(--amber); }
.essay-aside { display: flex; flex-direction: column; gap: 8px; padding-top: 6px; }
.essay-idx { font-family: var(--mono); font-size: 13px; color: var(--amber); }
.essay-date { font-family: var(--mono); font-size: 13px; color: var(--text-tertiary); }
.essay-kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 12px;
}
.essay-title {
  font-size: clamp(26px, 3.4vw, 38px);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.08;
  margin: 0 0 16px;
}
.essay:hover .essay-title { color: var(--amber); }
.essay-dek {
  font-family: var(--serif);
  font-size: 19px;
  color: var(--text-secondary);
  max-width: 60ch;
  line-height: 1.5;
  margin: 0;
}
.essay-foot {
  display: flex;
  gap: 16px;
  margin-top: 20px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-tertiary);
}
.essay-foot .has-viz { color: var(--amber); }
.essay-open {
  align-self: center;
  font-family: var(--mono);
  font-size: 14px;
  color: var(--text-secondary);
  white-space: nowrap;
  opacity: 0;
  transform: translateX(-6px);
  transition: all var(--dur) var(--ease);
}
.essay:hover .essay-open { opacity: 1; transform: translateX(0); color: var(--amber); }

.knowledge-page .home-note { padding: 64px 0 8px; }
.knowledge-page .home-note p {
  font-family: var(--serif);
  font-size: 19px;
  color: var(--text-secondary);
  max-width: 60ch;
  line-height: 1.6;
}
.knowledge-page .home-note p .amber { font-family: var(--mono); font-weight: 500; color: var(--amber); }

/* Article layout */
.article-hero {
  padding: 140px 0 48px;
  position: relative;
  overflow: hidden;
}
.article-hero .grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(63, 63, 78, 0.35) 1px, transparent 1px),
    linear-gradient(90deg, rgba(63, 63, 78, 0.35) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 70% at 30% 20%, #000 8%, transparent 72%);
}
.article-hero .inner { position: relative; z-index: 1; }
.article-hero .crumbs {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 24px;
}
.article-hero .crumbs .idx { color: var(--amber); }
.article-hero .crumbs .sep { color: var(--amber); margin: 0 8px; }
.article-hero h1 {
  font-size: clamp(34px, 4.8vw, 52px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.06;
  max-width: 720px;
  margin: 0 0 20px;
}
.article-hero .dek {
  font-family: var(--serif);
  font-size: 20px;
  line-height: 1.5;
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-tertiary);
}
.article-meta .has-viz { color: var(--amber); }

.article { padding: 0 0 96px; }

/* Same shell as .wrap — prose left-aligned with hero, not centered independently */
.prose-wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 48px;
}

.prose-wrap > .lead,
.prose-wrap > p,
.prose-wrap > h2.sec,
.prose-wrap > blockquote.pull,
.prose-wrap > .cta-card,
.prose-wrap > .sources,
.prose-wrap > .next-essay {
  max-width: 720px;
}

.prose-wrap > .breakout,
.prose-wrap > figure.breakout {
  max-width: 960px;
}

.prose-wrap .lead {
  font-family: var(--serif);
  font-size: 21px;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 28px;
}
.prose-wrap p {
  font-size: 17px;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 20px;
}
.prose-wrap strong { color: var(--text-primary); font-weight: 600; }
.prose-wrap .fig {
  font-family: var(--mono);
  font-weight: 500;
  color: var(--text-primary);
}
.prose-wrap h2.sec {
  display: flex;
  gap: 14px;
  align-items: baseline;
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin: 56px 0 20px;
  scroll-margin-top: 88px;
}
.prose-wrap h2.sec .n {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--amber);
  letter-spacing: 0.06em;
}
.prose-wrap blockquote.pull {
  margin: 36px 0;
  padding: 24px 0 24px 24px;
  border-left: 2px solid var(--amber);
  font-family: var(--serif);
  font-size: 24px;
  line-height: 1.45;
  color: var(--text-primary);
}
.prose-wrap blockquote.pull em { color: var(--text-secondary); }

.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.6s var(--ease), transform 0.6s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* Breakouts & viz chrome */
.breakout { margin: 32px 0; }
.viz {
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  background: var(--bg-surface);
  overflow: hidden;
}
.viz-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-base);
}
.viz-head .t {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.viz-head .t .d { color: var(--amber); margin-right: 6px; }
.viz-head .seg {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}
.viz-head .seg button {
  appearance: none;
  border: 1px solid var(--border-strong);
  background: var(--bg-surface-2);
  color: var(--text-secondary);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 7px 10px;
  border-radius: 3px;
  cursor: pointer;
}
.viz-head .seg button[aria-pressed="true"] {
  border-color: var(--amber);
  color: var(--text-primary);
  background: var(--amber-glow);
}
.viz-foot {
  padding: 12px 18px;
  border-top: 1px solid var(--border-subtle);
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.5;
  color: var(--text-tertiary);
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1px;
  background: var(--border-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  overflow: hidden;
}
.stat {
  background: var(--bg-surface);
  padding: 22px 20px;
}
.stat .n {
  display: block;
  font-family: var(--mono);
  font-weight: 300;
  font-size: clamp(36px, 5vw, 52px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 10px;
}
.stat .n .amber { color: var(--amber); }
.stat .n .unit { font-size: 0.55em; }
.stat .lbl {
  font-size: 14px;
  line-height: 1.45;
  color: var(--text-secondary);
  margin: 0;
}
.stat .spark { display: block; margin-top: 12px; max-width: 100%; }

/* Essay CTA */
.cta-card {
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  padding: 28px 28px 24px;
  background: var(--bg-surface);
}
.cta-card h3 {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
}
.cta-card p {
  font-size: 16px;
  line-height: 1.55;
  color: var(--text-secondary);
  margin-bottom: 20px;
}
.cta-card .btn,
.prose-wrap .btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 12px 20px;
  background: var(--amber);
  color: var(--bg-base);
}
.cta-card .btn:hover,
.prose-wrap .btn:hover { background: var(--amber-2); }

.sources {
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--border-subtle);
}
.sources ol {
  margin: 16px 0 0;
  padding-left: 20px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.6;
}
.sources a { color: var(--text-primary); }
.sources a:hover { color: var(--amber); }

.next-essay {
  display: block;
  margin-top: 48px;
  padding: 24px 0;
  border-top: 1px solid var(--border-subtle);
  text-decoration: none;
  color: inherit;
}
.next-essay .k {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}
.next-essay .t {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 10px 0 0;
  color: var(--text-primary);
}
.next-essay:hover .t { color: var(--amber); }
.next-essay .arrow { color: var(--amber); margin-left: 8px; }

footer.site {
  border-top: 1px solid var(--border-subtle);
  padding: 32px 0 48px;
}
footer.site .row {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 48px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-tertiary);
}
footer.site a { color: var(--text-secondary); text-decoration: none; }
footer.site a:hover { color: var(--text-primary); }

@media (max-width: 820px) {
  .blog-subnav { padding: 14px 24px; }
  .blog-subnav .back { display: none; }
  .knowledge-page .home-hero { padding: 100px 0 32px; }
  .knowledge-page .essay,
  .essay { grid-template-columns: 1fr; gap: 14px; padding: 30px 12px; }
  .essay-aside { flex-direction: row; align-items: center; gap: 14px; padding-top: 0; }
  .essay-open { display: none; }
  .article-hero { padding: 120px 0 36px; }
  .prose-wrap { padding: 0 24px; }
  footer.site .row { padding: 0 24px; }
  .viz-head { flex-direction: column; align-items: flex-start; }
}