/* =================================================================
   Hermes Atlas — Tonbi Masterclass
   Editorial curriculum layout built on the shared industrial tokens.
   ================================================================= */

.masterclass-shell {
  max-width: 1440px;
  margin: 0 auto;
}

.series-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(300px, 0.65fr);
  gap: clamp(48px, 8vw, 120px);
  padding: clamp(64px, 9vw, 124px) 40px clamp(72px, 10vw, 132px);
  border-bottom: 1px solid var(--rule-strong);
}

.series-kicker,
.creator-kicker,
.curriculum-label,
.episode-kind,
.notes-label {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--accent);
}

.series-kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.series-kicker::before {
  content: '';
  width: 28px;
  height: 1px;
  background: var(--accent);
}

.series-title {
  max-width: 10ch;
  font-size: clamp(58px, 9.2vw, 132px);
  font-weight: 500;
  line-height: 0.84;
  letter-spacing: -0.065em;
  text-wrap: balance;
}

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

.series-lede {
  max-width: 62ch;
  margin-top: 34px;
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.5vw, 17px);
  line-height: 1.75;
  color: var(--ink-dim);
  text-wrap: pretty;
}

.series-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin-top: 28px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
}

.series-facts span::before {
  content: '▸ ';
  color: var(--accent);
}

.creator-panel {
  align-self: end;
  border-left: 1px solid var(--rule-strong);
  padding: 8px 0 8px 32px;
}

.creator-name {
  margin: 18px 0 12px;
  font-size: clamp(26px, 3vw, 40px);
  font-weight: 550;
  line-height: 1.02;
  letter-spacing: -0.035em;
}

.creator-copy {
  max-width: 37ch;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.creator-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 24px;
}

.creator-links a,
.watch-link {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink);
  border-bottom: 1px solid var(--accent);
  padding-bottom: 3px;
  transition: color 0.2s, border-color 0.2s;
}

.creator-links a:hover,
.watch-link:hover {
  color: var(--accent);
  border-color: var(--ink);
}

.curriculum {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 32px;
  padding: 26px 40px;
  border-bottom: 1px solid var(--rule-strong);
  background: var(--bg-offset);
}

.curriculum-label {
  color: var(--ink-soft);
  padding-top: 9px;
}

.curriculum-nav {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  border-left: 1px solid var(--rule);
  border-top: 1px solid var(--rule);
}

.curriculum-nav a {
  min-width: 0;
  padding: 10px 12px 11px;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1.35;
  color: var(--ink-soft);
  transition: color 0.2s, background 0.2s;
}

.curriculum-nav a:hover {
  color: var(--ink);
  background: var(--bg-elev);
}

.curriculum-nav strong {
  display: block;
  margin-bottom: 3px;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.episode {
  display: grid;
  grid-template-columns: minmax(130px, 0.23fr) minmax(0, 1fr);
  gap: clamp(36px, 7vw, 104px);
  padding: clamp(72px, 9vw, 120px) 40px clamp(82px, 10vw, 132px);
  border-bottom: 1px solid var(--rule-strong);
  scroll-margin-top: 24px;
}

.episode:nth-of-type(even) {
  background: var(--bg-offset);
}

.episode-rail {
  align-self: start;
  position: sticky;
  top: 24px;
}

.episode-number {
  font-family: var(--font-mono);
  font-size: clamp(56px, 7vw, 96px);
  font-weight: 400;
  line-height: 0.82;
  letter-spacing: -0.08em;
  color: var(--rule-strong);
  font-variant-numeric: tabular-nums;
}

.episode-duration {
  margin-top: 22px;
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-mute);
  font-variant-numeric: tabular-nums;
}

.episode-heading-row {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 24px;
  margin: 10px 0 30px;
}

.episode-title {
  max-width: 18ch;
  font-size: clamp(36px, 5.2vw, 72px);
  font-weight: 500;
  line-height: 0.98;
  letter-spacing: -0.045em;
  text-wrap: balance;
}

.watch-link {
  flex: 0 0 auto;
  margin-bottom: 7px;
}

.video-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #070604;
  border: 1px solid var(--rule-strong);
  box-shadow: 12px 12px 0 var(--rule);
}

.video-frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.episode-notes {
  margin-top: 34px;
  border-top: 1px solid var(--rule-strong);
  border-bottom: 1px solid var(--rule-strong);
}

.episode-notes summary {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink);
  transition: color 0.2s;
}

.episode-notes summary::-webkit-details-marker { display: none; }
.episode-notes summary:hover { color: var(--accent); }
.episode-notes summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }

.notes-arrow {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border: 1px solid var(--rule-strong);
  color: var(--accent);
  transition: transform 0.25s, background 0.25s;
}

.episode-notes[open] .notes-arrow {
  transform: rotate(45deg);
  background: var(--bg-elev);
}

.notes-body {
  display: grid;
  grid-template-columns: minmax(220px, 0.48fr) minmax(0, 1fr);
  gap: clamp(28px, 6vw, 80px);
  padding: 10px 0 42px;
}

.notes-label {
  color: var(--ink-mute);
  margin-bottom: 14px;
}

.notes-tldr {
  font-size: clamp(20px, 2.2vw, 29px);
  line-height: 1.25;
  letter-spacing: -0.025em;
  color: var(--ink);
  text-wrap: pretty;
}

.takeaways {
  list-style: none;
  border-top: 1px solid var(--rule);
}

.takeaways li {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 16px;
  padding: 15px 0 16px;
  border-bottom: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.68;
  color: var(--ink-dim);
}

.takeaways strong { color: var(--ink); font-weight: 600; }

.timecode {
  align-self: start;
  font-size: 10px;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  border-bottom: 1px solid var(--accent-dim);
}

.timecode:hover { color: var(--ink); }

.source-note {
  padding: 34px 40px 38px;
  border-bottom: 1px solid var(--rule-strong);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.7;
  color: var(--ink-mute);
}

.source-note strong { color: var(--ink-soft); }
.source-note a { color: var(--accent); border-bottom: 1px solid var(--accent-dim); }

@media (max-width: 900px) {
  .series-hero { grid-template-columns: 1fr; padding-inline: 20px; }
  .creator-panel { max-width: 640px; }
  .curriculum { grid-template-columns: 1fr; padding-inline: 20px; }
  .curriculum-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .episode { grid-template-columns: 1fr; padding-inline: 20px; }
  .episode-rail { position: static; display: flex; align-items: end; gap: 18px; }
  .episode-number { font-size: 54px; }
  .episode-duration { margin: 0 0 2px; }
  .notes-body { grid-template-columns: 1fr; }
  .source-note { padding-inline: 20px; }
}

@media (max-width: 560px) {
  .series-title { font-size: clamp(50px, 17vw, 76px); }
  .creator-panel { padding-left: 20px; }
  .curriculum-nav { grid-template-columns: 1fr 1fr; }
  .episode-heading-row { display: block; }
  .watch-link { display: inline-block; margin-top: 18px; }
  .video-frame { box-shadow: 7px 7px 0 var(--rule); }
  .takeaways li { grid-template-columns: 46px minmax(0, 1fr); gap: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  .notes-arrow,
  .creator-links a,
  .watch-link,
  .curriculum-nav a { transition: none; }
}