/* Module hub + lesson page styles */

.breadcrumb {
  padding: 20px 0 0;
  font-size: 13px;
  color: var(--muted);
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
}
.breadcrumb a, .breadcrumb .here, .breadcrumb .sep { white-space: nowrap; }
.breadcrumb a { color: var(--light); text-decoration: none; transition: color 150ms; }
.breadcrumb a:hover { color: var(--white); text-decoration: underline; text-underline-offset: 3px; }
.breadcrumb .sep { color: var(--border); }
.breadcrumb .here { color: var(--white); font-weight: 500; }

/* Overview banner */
.overview-banner {
  background: linear-gradient(135deg, var(--bg-card-alt) 0%, var(--bg-card) 100%);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 48px;
  margin-top: 32px;
  position: relative;
  overflow: hidden;
}
@media (max-width: 767px) { .overview-banner { padding: 28px; } }
.overview-banner::before {
  content: "";
  position: absolute; left: 0; top: 0; bottom: 0;
  width: 6px; background: var(--accent);
}
.overview-banner .tier-pill {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 11px; letter-spacing: 0.14em; font-weight: 700; text-transform: uppercase;
  color: var(--accent); margin-bottom: 20px;
}
.overview-banner .tier-pill::before {
  content: ""; width: 10px; height: 10px; border-radius: 3px; background: var(--accent);
}
.overview-banner h1 { margin-bottom: 20px; }
.overview-banner .lead { max-width: 720px; color: var(--light); font-size: 18px; line-height: 1.6; }
.overview-banner .meta-row {
  margin-top: 32px; display: flex; gap: 12px; flex-wrap: wrap; align-items: center;
}
.overview-banner .cta-row { margin-top: 28px; display: flex; gap: 12px; flex-wrap: wrap; }

/* Why it matters */
.why-section { margin-top: 80px; }
.why-section .long-copy { max-width: 760px; margin-top: 24px; }
.why-section .long-copy p {
  font-size: 18px; line-height: 1.65; color: var(--light);
  margin: 0 0 20px;
}
.why-section .long-copy p em { color: var(--white); font-style: normal; font-weight: 500; }

/* Lessons list */
.lessons-list { margin-top: 32px; display: flex; flex-direction: column; gap: 12px; }
.lesson-row {
  display: grid;
  grid-template-columns: 60px 240px 1fr;
  gap: 24px;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  transition: border-color 150ms, transform 150ms;
  cursor: pointer;
}
@media (max-width: 900px) {
  .lesson-row { grid-template-columns: 1fr; gap: 16px; padding: 20px; }
  .lesson-row .l-num { display: none; }
  .lesson-row .l-thumb { max-width: 280px; }
}
.lesson-row:hover { border-color: var(--muted); transform: translateY(-1px); }
.lesson-row:hover h3 { color: var(--accent); }
.lesson-row .l-num {
  font-size: 44px; font-weight: 700; color: var(--muted);
  letter-spacing: -0.03em; line-height: 1; font-feature-settings: "tnum";
}
.lesson-row .l-thumb {
  position: relative; aspect-ratio: 16/9; background: var(--bg-card-alt);
  border-radius: 10px; border: 1px solid var(--border);
  display: grid; place-items: center;
}
.lesson-row .l-thumb .play {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--accent); color: #0A0A0A;
  display: grid; place-items: center;
}
.lesson-row .l-thumb .play [data-lucide] { width: 16px; height: 16px; stroke-width: 2; }
.lesson-row h3 { color: var(--white); transition: color 150ms; font-size: 18px; font-weight: 600; }
.lesson-row .l-desc { margin-top: 6px; color: var(--light); font-size: 14px; line-height: 1.55; }
.lesson-row .l-meta {
  margin-top: 14px; display: flex; gap: 16px; align-items: center;
  font-size: 12px; color: var(--muted);
}
.lesson-row .l-meta > * { white-space: nowrap; flex-shrink: 0; }
.dots { display: inline-flex; gap: 4px; }
.dots i {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--muted); opacity: 0.4;
}

/* Glossary grid */
.glossary-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 32px;
}
@media (max-width: 767px) { .glossary-grid { grid-template-columns: 1fr; } }
.gloss-card {
  position: relative;
  background: var(--bg-card-alt);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 20px 20px 28px;
}
.gloss-card::before {
  content: ""; position: absolute; left: 0; top: 20px; bottom: 20px;
  width: 4px; border-radius: 2px; background: var(--accent);
}
.gloss-card.high::before { background: var(--severity-high); }
.gloss-card.low::before { background: var(--severity-low); }
.gloss-card.info::before { background: var(--severity-info); }
.gloss-card .term {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-weight: 700; color: var(--accent); font-size: 14px; letter-spacing: -0.02em;
}
.gloss-card.high .term { color: var(--severity-high); }
.gloss-card.low .term { color: var(--severity-low); }
.gloss-card.info .term { color: var(--severity-info); }
.gloss-card p { margin: 8px 0 0; font-size: 14px; color: var(--light); line-height: 1.6; }

/* Metric panels */
.metrics-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
  margin-top: 32px;
}
@media (max-width: 900px) { .metrics-grid { grid-template-columns: 1fr; } }
.metric-panel {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 14px; padding: 24px;
  position: relative;
}
.metric-panel h4 { color: var(--white); font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.metric-panel .mp-visual {
  margin: 16px 0;
  height: 48px;
  background: linear-gradient(90deg, var(--bg-card-alt), var(--bg-card-alt));
  border-radius: 8px;
  position: relative;
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.metric-panel .mp-num {
  font-size: 32px; font-weight: 700; letter-spacing: -0.03em;
  color: var(--accent); font-feature-settings: "tnum";
}
.metric-panel.ok .mp-num { color: var(--accent-2); }
.metric-panel p { margin: 0; color: var(--light); font-size: 13.5px; line-height: 1.55; }

/* Ask Chief block */
.ask-chief {
  position: relative;
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-card-alt) 100%);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 40px;
  margin-top: 32px;
  overflow: hidden;
}
.ask-chief::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(500px 300px at 85% 0%, rgba(245,192,75,0.08), transparent 60%);
  pointer-events: none;
}
.ask-chief > * { position: relative; }
.ask-chief .c-head { display: flex; align-items: center; gap: 14px; margin-bottom: 20px; }
.ask-chief .c-icon {
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--accent-2-dim);
  color: var(--accent-2);
  display: grid; place-items: center;
  border: 1px solid rgba(245,192,75,0.3);
}
.ask-chief .c-label { font-size: 11px; letter-spacing: 0.14em; font-weight: 700; color: var(--accent-2); text-transform: uppercase; }
.ask-chief h3 { color: var(--white); margin-top: 4px; }
.ask-chief .prompts {
  margin-top: 20px; background: rgba(0,0,0,0.3);
  border: 1px solid var(--border); border-radius: 12px;
  padding: 20px; display: flex; flex-direction: column; gap: 12px;
}
.ask-chief .prompts .p-row {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 13px; color: var(--white); line-height: 1.5;
  padding-left: 20px; position: relative;
}
.ask-chief .prompts .p-row::before {
  content: "›"; position: absolute; left: 0; color: var(--accent-2); font-weight: 700;
}
.ask-chief .c-ctas { margin-top: 24px; display: flex; gap: 12px; flex-wrap: wrap; }

/* Prereq / next up */
.prereq-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 32px;
}
@media (max-width: 767px) { .prereq-grid { grid-template-columns: 1fr; } }
.pn-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 14px; padding: 24px;
  display: flex; flex-direction: column; gap: 8px;
  transition: border-color 150ms, transform 150ms;
}
.pn-card:hover { border-color: var(--muted); transform: translateY(-2px); }
.pn-card .kicker { font-size: 11px; letter-spacing: 0.14em; font-weight: 700; color: var(--muted); text-transform: uppercase; }
.pn-card h4 { color: var(--white); font-size: 17px; font-weight: 600; }
.pn-card p { margin: 0; color: var(--light); font-size: 13.5px; }
.pn-card .arrow-link { margin-top: 8px; color: var(--accent); font-size: 13px; font-weight: 600; }

/* ============= Lesson page ============= */

.lesson-hero { margin-top: 32px; max-width: 920px; }
.lesson-hero h1 { margin-bottom: 12px; }
.lesson-hero .lesson-tagline {
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 400;
  line-height: 1.45;
  color: var(--light);
  letter-spacing: -0.01em;
  max-width: 700px;
  margin: 0 0 16px;
}
.lesson-hero .lede {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.65;
  max-width: 680px;
}
.lesson-hero .meta {
  margin-top: 24px;
  display: flex; gap: 16px; align-items: center; flex-wrap: wrap;
  font-size: 13px; color: var(--muted);
}
.lesson-hero .meta > span,
.lesson-hero .meta > .chip { white-space: nowrap; flex-shrink: 0; }
.lesson-hero .meta .divider { color: var(--border); }
.lesson-hero .icon-actions { margin-left: auto; display: flex; gap: 8px; }

.lesson-body {
  display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 48px;
  margin-top: 40px;
}
@media (max-width: 1023px) {
  .lesson-body { grid-template-columns: 1fr; gap: 32px; }
  .lesson-body .right-rail { position: static !important; order: 2; }
}

.player-wrap { max-width: 860px; }
.player {
  position: relative; aspect-ratio: 16/9;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px; overflow: hidden;
  display: grid; place-items: center;
}
.player::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(700px 400px at 30% 20%, rgba(255,74,28,0.12), transparent 60%),
    radial-gradient(500px 300px at 80% 80%, rgba(245,192,75,0.06), transparent 60%);
  pointer-events: none;
}
.player:has(video)::before {
  display: none;
}
.player .play {
  width: 88px; height: 88px; border-radius: 50%;
  background: var(--accent); color: #0A0A0A;
  display: grid; place-items: center;
  box-shadow: 0 16px 60px rgba(255,74,28,0.4);
  position: relative; z-index: 1;
}
.player .play [data-lucide] { width: 32px; height: 32px; stroke-width: 2; }
.player .duration {
  position: absolute; top: 14px; right: 14px;
  background: rgba(10,10,10,0.85); border: 1px solid rgba(245,245,244,0.15);
  padding: 4px 10px; border-radius: 4px;
  font-family: "JetBrains Mono", monospace; font-size: 12px; color: #F5F5F4; z-index: 1;
}
.video-play-overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  pointer-events: none;
  z-index: 1;
  transition: opacity 0.25s ease, visibility 0.25s ease;
  border: none;
  background: none;
  padding: 0;
}
.video-play-overlay > svg {
  pointer-events: auto;
  cursor: pointer;
  width: 72px;
  height: 72px;
  padding: 18px;
  border-radius: 50%;
  background: rgba(10, 10, 10, 0.7);
  border: 2px solid rgba(245, 245, 244, 0.25);
  color: #F5F5F4;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  transition: background 0.15s, border-color 0.15s, transform 0.15s;
}
.video-play-overlay:hover > svg,
.video-play-overlay > svg:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #0A0A0A;
  transform: scale(1.08);
}
.video-play-overlay.is-playing {
  opacity: 0;
  visibility: hidden;
}
.video-play-overlay.is-playing > svg {
  width: 52px;
  height: 52px;
  padding: 14px;
  background: rgba(10, 10, 10, 0.55);
}
.player:hover .video-play-overlay.is-playing {
  opacity: 1;
  visibility: visible;
}
.watch-map-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 10px;
}
.watch-map {
  flex: 1;
  position: relative;
  height: 8px;
  background: rgba(255,255,255,0.08);
  border-radius: 4px;
  overflow-x: clip;
  overflow-y: visible;
}
.watch-map-segment {
  position: absolute;
  top: 0; height: 100%;
  border-radius: 4px;
  transition: opacity 0.2s;
}
.watch-map-segment.watched {
  background: #22c55e;
  opacity: 0.85;
  transition: width 0.15s linear, left 0.15s linear, opacity 0.2s;
}
.watch-map-segment.watched.pulse-active::after {
  content: "";
  position: absolute;
  top: -2px;
  right: -1px;
  width: 4px;
  bottom: -2px;
  border-radius: 2px;
  background: #22c55e;
  box-shadow: 0 0 6px 2px rgba(34,197,94,0.6), 0 0 12px 4px rgba(34,197,94,0.3);
  animation: watch-pulse 1.4s ease-in-out infinite;
  pointer-events: none;
}
@keyframes watch-pulse {
  0%, 100% { opacity: 0.5; box-shadow: 0 0 4px 1px rgba(34,197,94,0.4), 0 0 8px 2px rgba(34,197,94,0.2); }
  50% { opacity: 1; box-shadow: 0 0 8px 3px rgba(34,197,94,0.7), 0 0 16px 6px rgba(34,197,94,0.35); }
}
.watch-map-segment.unwatched {
  background: rgba(255,255,255,0.12);
  cursor: pointer;
  border-radius: 4px;
}
.watch-map-segment.unwatched:hover {
  background: rgba(255,255,255,0.28);
  opacity: 1;
}
.watch-map-segment.unwatched:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.watch-map-playhead {
  position: absolute;
  top: -3px;
  width: 2px;
  height: 14px;
  background: var(--white);
  border-radius: 1px;
  transform: translateX(-50%);
  pointer-events: none;
  box-shadow: 0 0 4px rgba(255,255,255,0.5);
}
.coverage-badge {
  flex-shrink: 0;
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  white-space: nowrap;
  letter-spacing: 0.01em;
  padding: 2px 8px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-radius: 20px;
  transition: color 0.3s;
}
.coverage-warning {
  margin-top: 10px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  background: rgba(245,158,11,0.12);
  border: 1px solid rgba(245,158,11,0.3);
  border-radius: 8px;
}
.cw-content {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13px;
  color: var(--fg);
  line-height: 1.5;
}
.cw-icon {
  flex-shrink: 0;
  color: #f59e0b;
  margin-top: 1px;
}
.cw-seek-btn {
  display: inline-flex;
  align-items: center;
  margin-left: 10px;
  padding: 3px 10px;
  font-size: 12px;
  font-weight: 600;
  background: var(--accent);
  color: #0a0a0a;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  vertical-align: middle;
  transition: opacity 0.15s;
}
.cw-seek-btn:hover { opacity: 0.85; }
.cw-dismiss {
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 24px; height: 24px;
  background: transparent;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  color: var(--muted);
  transition: color 0.15s, background 0.15s;
}
.cw-dismiss:hover { color: var(--fg); background: rgba(255,255,255,0.08); }
.chapter-bar {
  margin-top: 16px;
  height: 4px; background: var(--bg-card-alt); border-radius: 2px;
  position: relative;
}
.chapter-bar .tick {
  position: absolute; top: -4px; width: 2px; height: 12px;
  background: var(--accent); border-radius: 1px;
  transition: background 0.2s, box-shadow 0.2s;
}
.chapter-bar .tick-active {
  background: var(--accent);
  box-shadow: 0 0 6px rgba(255, 74, 28, 0.6);
  height: 14px; top: -5px; width: 3px;
}
.chapters {
  margin-top: 20px;
  display: flex; gap: 8px; flex-wrap: wrap;
}
.chapters.chapters-timeline {
  display: flex;
  flex-wrap: nowrap;
  gap: 0;
  margin-top: 14px;
  align-items: stretch;
}
.chapters .ch-cell {
  flex-shrink: 1;
  min-width: 0;
  padding-right: 3px;
  box-sizing: border-box;
  display: flex;
}
.chapters.chapters-timeline .ch {
  max-width: 100%;
  padding: 4px 6px;
  font-size: 10px;
  gap: 1px;
  flex: 1;
  flex-direction: column;
  align-items: flex-start;
  border-radius: 6px;
  overflow: hidden;
}
.chapters.chapters-timeline .ch .ch-top-row {
  display: flex;
  align-items: center;
  gap: 4px;
  width: 100%;
}
.chapters.chapters-timeline .ch .ch-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  line-height: 1.2;
  width: 100%;
  font-size: 10px;
}
.chapters .ch {
  display: inline-flex; gap: 6px; align-items: center;
  font-size: 12px; color: var(--light);
  background: var(--bg-card-alt); border: 1px solid var(--border);
  padding: 7px 12px; border-radius: 999px; font-weight: 500;
  cursor: default; transition: all 0.15s ease;
  font-family: inherit;
}
.chapters .ch.ch-clickable {
  cursor: pointer;
}
.chapters .ch.ch-clickable:hover {
  background: rgba(255, 74, 28, 0.08);
  border-color: var(--accent);
  color: var(--white);
}
.chapters .ch.ch-active {
  background: rgba(255, 74, 28, 0.12);
  border-color: var(--accent);
  color: var(--white);
  box-shadow: 0 0 0 1px rgba(255, 74, 28, 0.25);
}
.chapters .ch:disabled {
  opacity: 0.5; cursor: not-allowed;
}
.chapters .ch .n { color: var(--accent); font-weight: 700; font-family: "JetBrains Mono", monospace; font-size: 10px; }
.chapters .ch .ch-time {
  font-size: 9px; color: var(--muted); font-family: "JetBrains Mono", monospace;
  font-variant-numeric: tabular-nums;
  margin-left: 2px;
}

/* Right rail */
.right-rail {
  position: sticky; top: 88px; align-self: start;
}
.rail-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 14px; padding: 20px;
}
.rail-card h5 { font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); font-weight: 700; margin: 0 0 14px; }
.rail-card + .rail-card { margin-top: 16px; }
.rail-meta { display: flex; flex-direction: column; gap: 10px; font-size: 13px; }
.rail-meta .row { display: flex; justify-content: space-between; gap: 12px; color: var(--light); white-space: nowrap; }
.rail-meta .row .k { color: var(--muted); flex-shrink: 0; }
.rail-meta .row > span:last-child { flex-shrink: 0; }
.rail-actions { display: flex; flex-direction: column; gap: 8px; }
.rail-actions button {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: 8px;
  color: var(--light); font-size: 13px; font-weight: 500;
  transition: background 150ms, color 150ms;
  text-align: left;
}
.rail-actions button:hover { background: var(--bg-card-alt); color: var(--white); }
.rail-actions button.bookmarked { color: var(--accent); }
.rail-actions button.bookmarked:hover { color: var(--accent); }
.rail-next {
  background: var(--bg-card-alt);
}
.rail-next .nx-thumb {
  position: relative; aspect-ratio: 16/9;
  background: radial-gradient(circle at 30% 35%, rgba(255,74,28,0.18), transparent 55%), linear-gradient(145deg, var(--bg-card) 0%, var(--bg-card-alt) 100%);
  border-radius: 8px; border: 1px solid var(--border);
  overflow: hidden;
  display: grid; place-items: center; margin-bottom: 12px;
}
.rail-next .nx-thumb .nx-thumb-img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  z-index: 0;
}
.rail-next .nx-thumb .nx-overlay {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 50%, transparent 0%, rgba(10,10,10,0.2) 60%, rgba(10,10,10,0.5) 100%);
  z-index: 1; pointer-events: none;
}
.rail-next .nx-thumb .play {
  position: relative; z-index: 2;
  width: 28px; height: 28px; border-radius: 50%;
  background: rgba(10,10,10,0.85);
  border: 1px solid rgba(245,245,244,0.25);
  backdrop-filter: blur(10px);
  color: #F5F5F4; display: grid; place-items: center;
  transition: background 150ms;
}
.rail-next-link:hover .nx-thumb .play { background: var(--accent); border-color: var(--accent); color: #0A0A0A; }
.rail-next .nx-thumb .play [data-lucide] { width: 12px; height: 12px; stroke-width: 2; }
.rail-next h4 { font-size: 14px; color: var(--white); font-weight: 600; line-height: 1.4; margin: 0 0 6px; }
.rail-next .nx-meta { font-size: 12px; color: var(--muted); display: flex; align-items: center; gap: 6px; }
.rail-next-link { display: block; text-decoration: none; cursor: pointer; transition: border-color 150ms, transform 150ms; }
.rail-next-link:hover { border-color: var(--muted); transform: translateY(-2px); }
.rail-action-link {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: 8px;
  color: var(--light); font-size: 13px; font-weight: 500;
  transition: background 150ms, color 150ms;
  text-align: left; text-decoration: none;
}
.rail-action-link:hover { background: var(--bg-card-alt); color: var(--white); }

.transcript-sync-panel {
  margin-top: 20px; max-width: 860px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; overflow: hidden;
}
.transcript-sync-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 16px; border-bottom: 1px solid var(--border);
}
.transcript-sync-header h4 {
  margin: 0; font-size: 14px; font-weight: 600; color: var(--white);
  display: flex; align-items: center; gap: 8px;
}
.transcript-sync-actions {
  display: flex; gap: 8px; align-items: center;
}
.transcript-action-btn {
  background: none; border: 1px solid var(--border); border-radius: 6px;
  color: var(--light); font-size: 12px; padding: 4px 10px; cursor: pointer;
  display: flex; align-items: center; gap: 5px; transition: all .15s;
}
.transcript-action-btn:hover {
  background: rgba(255,255,255,0.06); color: var(--white);
  border-color: rgba(255,255,255,0.2);
}
.transcript-sync-body {
  overflow-y: auto; transition: max-height .4s ease-out;
  scrollbar-width: thin; scrollbar-color: rgba(255,255,255,0.15) transparent;
  overscroll-behavior: contain;
}
.transcript-sync-body:not(.expanded) {
  max-height: 240px;
}
.transcript-sync-body.expanded { max-height: 70vh; }
.transcript-seg {
  display: flex; gap: 16px; padding: 10px 16px; cursor: pointer;
  transition: all .15s; border-left: 3px solid transparent;
  align-items: flex-start;
}
.transcript-seg:hover { background: rgba(255,255,255,0.06); }
.transcript-seg.active {
  background: rgba(255,74,28,0.08);
  border-left-color: var(--accent);
}
.transcript-seg.active .transcript-text { color: var(--white); }
.transcript-seg.active .transcript-ts { color: var(--accent); }
.transcript-ts {
  font-size: 11px; color: var(--muted); font-variant-numeric: tabular-nums;
  flex-shrink: 0; min-width: 80px; padding-top: 2px; font-family: var(--font-mono, monospace);
  white-space: nowrap;
}
.transcript-text {
  font-size: 13px; line-height: 1.6; color: var(--light); transition: color .12s;
}
.transcript-seg.active .ts-current {
  color: var(--white);
  background: rgba(255, 74, 28, 0.12);
  border-radius: 3px;
  padding: 1px 0;
  transition: background 0.2s, color 0.15s;
}
.transcript-seg.active .ts-dim {
  color: var(--muted);
  transition: color 0.2s;
}
.transcript-seg:not(.active) .ts-dim {
  color: inherit;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Collapsible sections */
.collapsible-section {
  max-width: 860px;
  margin-top: 32px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg-card);
  overflow: hidden;
}
.collapsible-section-header {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 16px 20px;
  border: none;
  background: none;
  cursor: pointer;
  color: var(--white);
  font-size: 15px;
  font-weight: 600;
  text-align: left;
  transition: background 0.15s;
}
.collapsible-section-header:hover {
  background: rgba(255,255,255,0.03);
}
.collapsible-chevron {
  flex-shrink: 0;
  transition: transform 0.3s ease;
  color: var(--muted);
}
.collapsible-section.is-expanded .collapsible-chevron {
  transform: rotate(90deg);
}
.collapsible-icon {
  display: flex;
  align-items: center;
  color: var(--accent);
  flex-shrink: 0;
}
.collapsible-title {
  flex: 1;
}
.collapsible-section-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.collapsible-section.is-expanded .collapsible-section-body {
  overflow: visible;
}

/* Wrapper overrides for collapsible sections */
.written-companion-wrapper { margin-top: 48px; }
.takeaways-wrapper { margin-top: 20px; }
.try-it-wrapper { margin-top: 20px; }

/* Written companion */
.written-companion { max-width: none; margin-top: 0; }
.written-companion h2 {
  font-size: 24px; font-weight: 700; color: var(--white);
  margin: 40px 0 14px; letter-spacing: -0.015em;
}
.written-companion h2:first-child { margin-top: 0; }
.written-companion p {
  font-size: 18px; line-height: 1.7; color: var(--light);
  margin: 0 0 18px;
}
.written-companion p em { color: var(--white); }
.written-companion strong { color: var(--white); font-weight: 600; }
.written-companion .pullquote {
  margin: 32px 0;
  padding: 20px 28px;
  border-left: 4px solid var(--accent);
  font-size: 21px; line-height: 1.5; color: var(--white); font-weight: 500;
  letter-spacing: -0.01em;
  background: var(--bg-card-alt);
  border-radius: 0 12px 12px 0;
}
.written-companion .inline-gloss {
  margin: 24px 0;
  background: var(--bg-card-alt);
  border: 1px solid var(--border);
  border-left: 4px solid var(--severity-high);
  border-radius: 0 10px 10px 0;
  padding: 18px 22px;
  position: relative;
  cursor: default;
}
.gloss-popover {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 50;
  margin-top: 4px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 8px 32px rgba(0,0,0,.45);
  animation: gp-fade-in .15s ease-out;
}
@keyframes gp-fade-in {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}
.gloss-popover .gp-term {
  font-family: "JetBrains Mono", monospace;
  font-size: 14px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
}
.gloss-popover .gp-def {
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
  margin: 0 0 10px;
}
.gloss-popover .gp-section {
  margin-top: 10px;
}
.gloss-popover .gp-label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--accent);
  margin-bottom: 4px;
}
.gloss-popover .gp-section p {
  font-size: 13px;
  line-height: 1.55;
  color: var(--muted);
  margin: 0;
}
.gloss-popover .gp-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-top: 14px;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  transition: color .15s;
}
.gloss-popover .gp-link:hover {
  color: var(--white);
}
.written-companion .inline-gloss.term-low { border-left-color: var(--severity-low); }
.written-companion .inline-gloss.term-medium { border-left-color: var(--severity-medium, #f59e0b); }
.written-companion .inline-gloss .h {
  font-family: "JetBrains Mono", monospace;
  font-size: 13px; font-weight: 700; color: var(--severity-high);
  margin-bottom: 6px;
}
.written-companion .inline-gloss.term-low .h { color: var(--severity-low); }
.written-companion .inline-gloss.term-medium .h { color: var(--severity-medium, #f59e0b); }
.written-companion .inline-gloss p { font-size: 15px; margin: 0; line-height: 1.6; }

/* Takeaways */
.takeaways {
  max-width: none;
  margin: 0;
  background: none;
  border: none;
  border-radius: 0;
  padding: 0 20px 20px;
}
.takeaway-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 12px; }
.takeaway-list li {
  display: grid; grid-template-columns: 20px 1fr; gap: 12px; align-items: flex-start;
  color: var(--light); font-size: 15px; line-height: 1.55;
}
.takeaway-list li::before {
  content: ""; width: 18px; height: 18px;
  border: 1.5px solid var(--muted); border-radius: 4px;
  margin-top: 3px;
}

/* Try-it block (reuses ask-chief style) */
.try-it { max-width: none; }
.try-it h3 { color: var(--white); font-size: 20px; margin: 0 0 8px; }
.try-it p { color: var(--light); font-size: 15px; margin: 0 0 20px; }
.try-it-wrapper .ask-chief { border-radius: 0 0 14px 14px; }

/* Next up big card */
.next-up-big {
  max-width: 720px;
  margin-top: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  display: grid; grid-template-columns: 200px 1fr auto; gap: 20px; align-items: center;
  transition: border-color 150ms, transform 150ms; cursor: pointer;
}
@media (max-width: 767px) { .next-up-big { grid-template-columns: 1fr; } }
.next-up-big:hover { border-color: var(--muted); transform: translateY(-2px); }
.next-up-big .nu-thumb {
  position: relative; aspect-ratio: 16/9;
  background: radial-gradient(circle at 30% 35%, rgba(255,74,28,0.22), transparent 55%), linear-gradient(145deg, var(--bg-card) 0%, var(--bg-card-alt) 100%);
  border-radius: 10px; border: 1px solid var(--border);
  overflow: hidden;
  display: grid; place-items: center;
}
.next-up-big .nu-thumb .nu-thumb-img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  z-index: 0;
}
.next-up-big .nu-thumb .nu-overlay {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 50%, transparent 0%, rgba(10,10,10,0.2) 60%, rgba(10,10,10,0.5) 100%);
  z-index: 1; pointer-events: none;
}
.next-up-big .nu-thumb .play {
  position: relative; z-index: 2;
  width: 36px; height: 36px; border-radius: 50%;
  background: rgba(10,10,10,0.85);
  border: 1px solid rgba(245,245,244,0.25);
  backdrop-filter: blur(10px);
  color: #F5F5F4; display: grid; place-items: center;
  transition: background 150ms;
}
.next-up-big:hover .nu-thumb .play { background: var(--accent); border-color: var(--accent); color: #0A0A0A; }
.next-up-big .nu-thumb .play [data-lucide] { width: 14px; height: 14px; stroke-width: 2; }
.next-up-big .nu-thumb .nu-duration {
  position: absolute;
  bottom: 10px; right: 10px;
  z-index: 2;
  background: rgba(10,10,10,0.85);
  border: 1px solid rgba(245,245,244,0.15);
  padding: 3px 7px;
  border-radius: 4px;
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  color: #F5F5F4;
  font-weight: 600;
}
.next-up-big .kicker { font-size: 11px; letter-spacing: 0.14em; font-weight: 700; color: var(--muted); text-transform: uppercase; }
.next-up-big h4 { color: var(--white); font-size: 18px; font-weight: 600; margin: 4px 0 0; }
.next-up-big .nu-meta { margin-top: 6px; font-size: 13px; color: var(--muted); }

/* ============= Rich content blocks ============= */

/* Callout blocks */
.callout-block {
  margin: 24px 0;
  padding: 20px 24px;
  border-radius: 12px;
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.callout-block::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
}
.callout-why-matters { background: rgba(255,74,28,0.06); }
.callout-why-matters::before { background: var(--accent); }
.callout-watch-out { background: rgba(245,192,75,0.06); }
.callout-watch-out::before { background: var(--accent-2); }
.callout-pro-tip { background: rgba(56,189,248,0.06); }
.callout-pro-tip::before { background: #38bdf8; }
.callout-block .cb-head {
  display: flex; align-items: center; gap: 8px;
  font-size: 12px; letter-spacing: 0.1em; font-weight: 700; text-transform: uppercase;
  margin-bottom: 10px;
}
.callout-why-matters .cb-head { color: var(--accent); }
.callout-watch-out .cb-head { color: var(--accent-2); }
.callout-pro-tip .cb-head { color: #38bdf8; }
.callout-block p { font-size: 15px; line-height: 1.65; color: var(--light); margin: 0; }

/* Role lens */
.role-lens {
  margin: 16px 0;
  padding: 20px 24px;
  background: var(--bg-card-alt);
  border: 1px solid var(--border);
  border-radius: 12px;
  border-left: 4px solid var(--accent);
}
.role-lens .rl-head {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 700; color: var(--accent);
  margin-bottom: 8px;
}
.role-lens p { font-size: 15px; line-height: 1.65; color: var(--light); margin: 0; }

/* Step blocks */
.step-block {
  display: grid; grid-template-columns: 48px 1fr; gap: 16px;
  margin: 20px 0; padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  align-items: flex-start;
}
.step-block .sb-num {
  font-size: 28px; font-weight: 700; color: var(--accent);
  font-family: "JetBrains Mono", monospace;
  letter-spacing: -0.03em; line-height: 1;
  padding-top: 4px;
}
.step-block .sb-body h3 { color: var(--white); font-size: 16px; font-weight: 600; margin: 0 0 6px; }
.step-block .sb-body p { color: var(--light); font-size: 15px; line-height: 1.6; margin: 0; }

/* Checklist */
.checklist-block {
  margin: 20px 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  display: flex; flex-direction: column; gap: 12px;
}
.checklist-block .cl-row {
  display: flex; align-items: flex-start; gap: 12px;
  font-size: 15px; color: var(--light); line-height: 1.55;
  cursor: default;
}
.checklist-block .cl-row svg { color: var(--muted); flex-shrink: 0; margin-top: 2px; }

/* Scenario */
.scenario-block {
  margin: 24px 0;
  padding: 24px;
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-card-alt) 100%);
  border: 1px solid var(--border);
  border-radius: 14px;
  border-left: 4px solid var(--accent-2);
}
.scenario-block .sc-head {
  display: flex; align-items: center; gap: 8px;
  font-size: 12px; letter-spacing: 0.1em; font-weight: 700; color: var(--accent-2);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.scenario-block p { font-size: 15px; line-height: 1.7; color: var(--light); margin: 0; }

/* Comparison / KPI table */
.comp-table-wrap {
  margin: 20px 0;
  overflow-x: auto;
  border-radius: 12px;
  border: 1px solid var(--border);
}
.comp-table {
  width: 100%; border-collapse: collapse;
  font-size: 14px;
}
.comp-table th {
  text-align: left; padding: 14px 16px;
  background: var(--bg-card-alt);
  font-size: 12px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
}
.comp-table td {
  padding: 12px 16px;
  color: var(--light);
  border-bottom: 1px solid var(--border);
  line-height: 1.55;
}
.comp-table tr:last-child td { border-bottom: none; }
.comp-table td:first-child { color: var(--white); font-weight: 600; }

/* Info severity inline gloss */
.written-companion .inline-gloss.term-info { border-left-color: var(--severity-info, #38bdf8); }
.written-companion .inline-gloss.term-info .h { color: var(--severity-info, #38bdf8); }

/* ============= Expandable lesson cards ============= */
.lesson-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  transition: border-color 150ms;
}
.lesson-card:hover { border-color: var(--muted); }
.lesson-card.expanded { border-color: var(--accent); }
.lesson-card .lc-header {
  display: grid; grid-template-columns: 60px 1fr 40px;
  gap: 16px; align-items: center;
  padding: 20px; cursor: pointer;
  width: 100%; text-align: left;
  background: none; border: none; color: inherit; font: inherit;
}
.lesson-card .lc-header:hover h3 { color: var(--accent); }
.lesson-card .l-num {
  font-size: 36px; font-weight: 700; color: var(--muted);
  letter-spacing: -0.03em; line-height: 1;
  font-feature-settings: "tnum";
}
.lesson-card.expanded .l-num { color: var(--accent); }
.lesson-card .lc-info h3 {
  color: var(--white); font-size: 18px; font-weight: 600;
  margin: 0 0 4px; transition: color 150ms;
}
.lesson-card .lc-sub { color: var(--light); font-size: 14px; margin: 0 0 8px; }
.lesson-card .l-meta {
  display: flex; gap: 16px; align-items: center;
  font-size: 12px; color: var(--muted);
}
.lesson-card .l-meta svg { margin-right: 4px; }
.lesson-card .lc-toggle { color: var(--muted); display: grid; place-items: center; }
.lesson-card .lc-body {
  padding: 0 20px 24px 20px;
  border-top: 1px solid var(--border);
  margin-top: 0;
  padding-top: 24px;
}

.report-modal-overlay {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(0,0,0,0.6); backdrop-filter: blur(4px);
  display: grid; place-items: center; padding: 24px;
}
.report-modal {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; width: 100%; max-width: 480px;
  box-shadow: 0 24px 48px rgba(0,0,0,0.4);
}
.report-modal-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px 20px; border-bottom: 1px solid var(--border);
}
.report-modal-header h3 { margin: 0; font-size: 16px; color: var(--white); }
.report-modal-close {
  width: 28px; height: 28px; display: grid; place-items: center;
  border-radius: 6px; border: none; background: transparent;
  color: var(--muted); cursor: pointer; transition: all 150ms;
}
.report-modal-close:hover { background: var(--bg-card-alt); color: var(--white); }
.report-modal-body { padding: 20px; }
.report-modal-hint { color: var(--light); font-size: 13px; margin: 0 0 12px; }
.report-textarea {
  width: 100%; box-sizing: border-box;
  padding: 12px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--bg);
  color: var(--white); font-size: 14px; font-family: inherit;
  resize: vertical; min-height: 100px;
  transition: border-color 150ms;
}
.report-textarea:focus { outline: none; border-color: var(--accent); }
.report-modal-footer {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  margin-top: 12px;
}
.report-char-count { font-size: 11px; color: var(--muted); }
.report-error { font-size: 12px; color: var(--danger, #ef4444); }
.report-modal-actions { display: flex; gap: 8px; margin-left: auto; }
.report-success {
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  padding: 20px 0; text-align: center; color: var(--success, #22c55e);
}
.report-success p { color: var(--light); margin: 0; font-size: 14px; }
.report-modal-done { width: 100%; }

.bookmark-toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  background: var(--bg-card);
  border: 1px solid var(--accent);
  border-radius: 10px;
  color: var(--white);
  font-size: 14px;
  font-weight: 500;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  z-index: 9999;
  animation: toastSlideUp 0.3s ease;
}
.bookmark-toast svg { color: var(--accent); flex-shrink: 0; }
@keyframes toastSlideUp {
  from { opacity: 0; transform: translateX(-50%) translateY(16px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

.meta-action-btn.bookmarked { color: var(--accent); }
.rail-actions .bookmarked { color: var(--accent); }

/* Reset for view containers */
.view-body { padding-bottom: 64px; }

/* =================================================================
   Top-of-page "Next module" CTA — lives in the lesson meta-bar so
   users can jump to the next module without scrolling all the way
   to the bottom of the page on long transcripts.
   ================================================================= */
.next-module-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  max-width: 320px;
  height: 32px;
  padding: 0 12px;
  margin-right: 4px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--light);
  font-size: 12px;
  font-weight: 500;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  overflow: hidden;
  transition: color 150ms ease, border-color 150ms ease, background 150ms ease, transform 150ms ease;
}
.next-module-cta:hover {
  color: var(--white);
  border-color: var(--accent);
  background: var(--bg-card-alt);
  transform: translateY(-1px);
}
.next-module-cta .nmc-label {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  flex-shrink: 0;
}
.next-module-cta:hover .nmc-label { color: var(--accent); }
.next-module-cta .nmc-title {
  min-width: 0;
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--white);
}
.next-module-cta .nmc-arrow {
  font-size: 14px;
  line-height: 1;
  color: var(--muted);
  flex-shrink: 0;
  transition: transform 150ms ease, color 150ms ease;
}
.next-module-cta:hover .nmc-arrow {
  color: var(--accent);
  transform: translateX(2px);
}
@media (max-width: 640px) {
  .next-module-cta .nmc-title { max-width: 110px; }
}
@media (max-width: 480px) {
  /* On the smallest viewports just show the label + arrow so the
     meta-bar doesn't wrap awkwardly. */
  .next-module-cta .nmc-title { display: none; }
}