/* ───── Episode page styles ───── */

.back-link{
  display:inline-flex; align-items:center; gap:8px;
  margin-top:20px;
  font-family:var(--mono);
  font-size:11.5px;
  letter-spacing:.06em;
  text-transform:uppercase;
  color:var(--fg-mute);
  text-decoration:none;
  transition: color .15s ease, gap .15s ease;
}
.back-link:hover{ color:var(--accent); gap:12px; }

/* ── episode hero ─────────────────────────────── */
.ep-hero{ padding:40px 0 56px }
.ep-hero-grid{
  display:grid;
  grid-template-columns: 1.15fr 1fr;
  gap:80px;
  align-items:center;
}
.ep-hero-left{ min-width:0 }

.ep-kicker{
  display:inline-flex; flex-wrap:wrap; align-items:center; gap:10px;
  font-family:var(--mono);
  font-size:11.5px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--fg-mute);
  margin-bottom:22px;
}
.ep-kicker-num{
  color:var(--accent);
  padding:4px 10px;
  border:1px solid oklch(0.62 0.17 250 / 0.35);
  border-radius:999px;
  background: oklch(0.62 0.17 250 / 0.08);
  letter-spacing:.14em;
}
[data-theme="light"] .ep-kicker-num{
  border-color: oklch(0.52 0.17 248 / 0.3);
  background: oklch(0.52 0.17 248 / 0.08);
}
.ep-kicker-dot{ opacity:.5 }

.ep-title-big{
  font-family:var(--display);
  font-weight:600;
  font-size:clamp(32px, 4.8vw, 60px);
  line-height:1.04;
  letter-spacing:-0.025em;
  margin:0 0 22px;
  color:var(--fg);
  text-wrap:balance;
  max-width:22ch;
}

.ep-authors{
  font-family:var(--sans);
  font-size:15px;
  color:var(--fg-dim);
  margin:0 0 22px;
  max-width:52ch;
  line-height:1.5;
}
.ep-authors .muted{ color:var(--fg-mute); font-style:italic }

.ep-badges{ display:flex; flex-wrap:wrap; gap:8px }
.tag{
  display:inline-flex; align-items:center;
  font-family:var(--mono);
  font-size:10.5px;
  letter-spacing:.12em;
  text-transform:uppercase;
  padding:5px 10px;
  border:1px solid var(--line);
  border-radius:999px;
  color:var(--fg-dim);
  background: transparent;
}

.ep-cover{ width:100%; max-width:260px; justify-self:end }

/* ── player */
.ep-player-sec{ padding:40px 0 40px; border-top:1px solid var(--line-soft) }

.player{
  display:grid;
  grid-template-columns: auto 1fr auto;
  align-items:center;
  gap:24px;
  padding:20px 24px;
  border:1px solid var(--line);
  border-radius:12px;
  background: var(--bg-2);
  box-shadow: 0 30px 60px -30px oklch(0.15 0.1 250 / 0.5);
}
[data-theme="light"] .player{
  box-shadow: 0 20px 40px -24px oklch(0.3 0.1 250 / 0.18);
}

.play-btn{
  width:58px; height:58px;
  border-radius:50%;
  border:0;
  background: var(--accent);
  color: var(--accent-ink);
  display:inline-flex; align-items:center; justify-content:center;
  cursor:pointer;
  transition: transform .15s ease, box-shadow .2s ease, filter .2s ease;
  box-shadow: 0 10px 24px -8px oklch(0.62 0.17 250 / 0.6);
  flex-shrink:0;
}
.play-btn:hover{ transform: translateY(-1px); filter:brightness(1.05) }
.play-btn:active{ transform: translateY(0) }
.play-btn svg{ width:22px; height:22px }
.play-btn .ico-play{ margin-left:3px }
.play-btn .ico-pause{ display:none }
.is-playing .play-btn .ico-play{ display:none }
.is-playing .play-btn .ico-pause{ display:block }

.player-body{ min-width:0 }
.player-title{ margin-bottom:10px }
.pt-ep{
  font-family:var(--mono);
  font-size:10.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--fg-mute);
  margin-bottom:3px;
}
.pt-name{
  font-family:var(--display);
  font-weight:500;
  font-size:15px;
  color:var(--fg);
  letter-spacing:-0.005em;
  line-height:1.3;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}

.scrub{
  display:grid;
  grid-template-columns: auto 1fr auto;
  align-items:center;
  gap:12px;
}
.time{
  font-family:var(--mono);
  font-size:11.5px;
  color:var(--fg-mute);
  font-variant-numeric: tabular-nums;
  min-width:38px;
  text-align:center;
}
.scrub-track{
  position:relative;
  height:20px;
  cursor:pointer;
  display:flex; align-items:center;
}
.scrub-track::before{
  content:""; position:absolute; left:0; right:0; top:50%;
  height:4px; transform:translateY(-50%);
  background: var(--line);
  border-radius:2px;
}
.scrub-buf{
  position:absolute; left:0; top:50%;
  height:4px; width:0;
  transform:translateY(-50%);
  background: oklch(0.5 0.05 250 / 0.4);
  border-radius:2px;
  pointer-events:none;
}
.scrub-fill{
  position:absolute; left:0; top:50%;
  height:4px; width:0;
  transform:translateY(-50%);
  background: var(--accent);
  border-radius:2px;
  pointer-events:none;
}
.scrub-thumb{
  position:absolute; top:50%; left:0;
  width:12px; height:12px; border-radius:50%;
  background:var(--accent);
  transform: translate(-50%, -50%);
  box-shadow: 0 0 0 3px var(--bg-2), 0 2px 8px oklch(0.62 0.17 250 / 0.5);
  pointer-events:none;
  transition: transform .15s ease;
}
.scrub-track:hover .scrub-thumb{ transform: translate(-50%, -50%) scale(1.15) }

.player-tools{
  display:flex; align-items:center; gap:6px;
}
.tool-btn{
  position:relative;
  display:inline-flex; align-items:center; justify-content:center;
  width:36px; height:36px;
  border-radius:8px;
  border:1px solid transparent;
  background: transparent;
  color: var(--fg-dim);
  cursor:pointer;
  text-decoration:none;
  transition: color .15s ease, background .15s ease, border-color .15s ease;
}
.tool-btn:hover{ color:var(--accent); background: var(--bg); border-color:var(--line) }
.tool-btn svg{ width:18px; height:18px }
.tool-lbl{
  position:absolute;
  bottom:4px; right:3px;
  font-family:var(--mono);
  font-size:8px;
  font-weight:600;
  color:var(--fg-mute);
  background: var(--bg-2);
  padding:1px 2px;
  border-radius:2px;
  line-height:1;
}
.rate-btn{
  width:auto; padding:0 10px;
  font-family:var(--mono);
  font-size:12px;
  color:var(--fg-dim);
  min-width:44px;
}

.is-error .scrub-fill{ background: var(--fg-mute) }

/* ── about this episode ───────────────────────── */
.ep-about-sec{ padding:72px 0 96px; border-top:1px solid var(--line-soft) }

.ep-about{
  display:grid;
  grid-template-columns: 280px 1fr;
  gap:64px;
  align-items:start;
}

.ep-about-side{ position:sticky; top:32px }

.sidecard{
  border:1px solid var(--line);
  border-radius:8px;
  padding:20px;
  background: var(--bg-2);
  display:flex;
  flex-direction:column;
  gap:14px;
}
.sc-label{
  font-family:var(--mono);
  font-size:10px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color: var(--fg-mute);
  margin-bottom:5px;
}
.sc-val{
  font-family:var(--display);
  font-size:15px;
  line-height:1.3;
  color: var(--fg);
  font-weight:500;
  letter-spacing:-0.005em;
}
.sc-val.sm{ font-family:var(--mono); font-size:12px; font-weight:400; color:var(--fg-dim); letter-spacing:0 }
.sc-row{ display:grid; grid-template-columns:1fr 1fr; gap:14px }
.sc-divider{ height:1px; background:var(--line-soft); margin:2px 0 }

.paper-link{
  display:flex; justify-content:space-between; align-items:center; gap:12px;
  padding:12px 14px;
  border:1px solid var(--line);
  border-radius:6px;
  color:var(--fg);
  text-decoration:none;
  transition: border-color .15s ease, color .15s ease, transform .15s ease;
}
.paper-link:hover{ border-color:var(--accent); color:var(--accent) }
.pl-eye{
  font-family:var(--mono);
  font-size:10.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--fg-mute);
  margin-bottom:3px;
}
.pl-url{
  font-family:var(--mono);
  font-size:12px;
  color:var(--fg);
}
.paper-link:hover .pl-url{ color:var(--accent) }

.apple-line, .platform-line{
  display:flex; align-items:center; gap:10px;
  font-family:var(--display);
  font-size:14px;
  color:var(--fg);
  text-decoration:none;
  padding:4px 2px;
  transition: color .15s ease;
}
.apple-line:hover, .platform-line:hover{ color:var(--accent) }
.apple-line .apple-arrow,
.platform-line .platform-arrow{ margin-left:auto; color:var(--fg-mute); transition: color .15s ease, transform .15s ease }
.apple-line:hover .apple-arrow,
.platform-line:hover .platform-arrow{ color:var(--accent); transform: translateX(3px) }

.ep-about-body{
  font-family:var(--sans);
  font-size:16px;
  line-height:1.7;
  color: var(--fg-dim);
  max-width:64ch;
}
.ep-about-body p{ margin:0 0 18px }
.ep-about-body em{ color: var(--fg); font-style: italic }
.ep-about-body strong{ color: var(--fg); font-weight:600 }
.ep-about-body ul,
.ep-about-body ol{ margin:0 0 22px; padding-left:22px }
.ep-about-body li{ margin:0 0 8px; line-height:1.6 }
.ep-lede{
  font-family:var(--display);
  font-size:21px;
  line-height:1.45;
  color: var(--fg);
  font-weight:400;
  letter-spacing:-0.005em;
  margin:0 0 28px !important;
  text-wrap:pretty;
}
.ep-lede strong{ color: var(--accent); font-weight:500 }
.ep-lede em{ font-style: italic; color:var(--fg) }

.ep-h{
  font-family:var(--display);
  font-weight:500;
  font-size:13px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--fg-mute);
  margin:34px 0 14px;
  padding-top:22px;
  border-top:1px solid var(--line-soft);
}

.chapters{
  list-style:none;
  padding:0;
  margin:0 0 8px;
  counter-reset: ch;
}
.chapters li{
  display:grid;
  grid-template-columns: 60px 1fr;
  gap:18px;
  padding:10px 0;
  border-bottom:1px solid var(--line-soft);
  font-size:15px;
  color:var(--fg);
}
.ch-time{
  font-family:var(--mono);
  font-size:12px;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  padding-top:2px;
}

.refs{
  list-style:none !important;
  padding-left:0 !important;
}
.refs li{
  padding:8px 0;
  border-bottom:1px solid var(--line-soft);
  font-size:14px;
  color:var(--fg-dim);
}
.refs a{ color:var(--fg); text-decoration:none; border-bottom:1px solid var(--line) }
.refs a:hover{ color:var(--accent); border-color:var(--accent) }

/* ── full transcript ──────────────────────────── */
.ep-transcript-sec{ padding:72px 0 96px; border-top:1px solid var(--line-soft) }

.ep-tx{
  margin:0 0 14px;
  line-height:1.7;
  text-indent:0;
}
.ep-tx-time{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.04em;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  margin-right: 12px;
}
.ep-tx-speaker{
  font-family:var(--display);
  font-weight:600;
  color: var(--fg);
  margin-right: 4px;
}

/* ── concepts cloud ───────────────────────────── */
.ep-concepts-sec{ padding:40px 0 40px; border-top:1px solid var(--line-soft) }

.ep-concept-cloud{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin: 16px 0 14px;
}

.ep-chip{
  display:inline-flex; align-items:center;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.08em;
  text-transform:uppercase;
  padding:6px 12px;
  border:1px solid var(--line);
  border-radius:999px;
  color:var(--fg-dim);
  background: transparent;
  text-decoration:none;
  transition: color .12s ease, border-color .12s ease, background .12s ease;
}
.ep-chip:hover{
  color: var(--accent);
  border-color: var(--accent);
}
.ep-chip--theme{
  color: var(--fg);
  border-color: var(--fg-dim);
  font-weight:600;
}
.ep-chip--theme:hover{
  color: var(--accent);
  border-color: var(--accent);
}
.ep-chip--author{
  text-transform: none;
  letter-spacing: 0;
  font-family: var(--display);
  font-size: 12px;
}

.ep-concepts-foot{
  margin: 0;
  font-size: 13px;
  color: var(--fg-mute);
}
.ep-concepts-foot a{
  color: var(--fg-dim);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.ep-concepts-foot a:hover{ color: var(--accent) }

/* ── prev/next episode nav ──────────────────────────── */
.ep-prev-next{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:18px;
  margin:24px 0 8px;
}
.ep-nav-link{
  display:flex; align-items:center; gap:14px;
  padding:14px 18px;
  border:1px solid var(--line-soft);
  border-radius:12px;
  text-decoration:none;
  color: var(--fg);
  background: transparent;
  transition: border-color .12s ease, transform .12s ease;
  min-height:60px;
}
.ep-nav-link:hover{ border-color: var(--accent); transform: translateY(-1px) }
.ep-nav-empty{ visibility:hidden }
.ep-nav-next{ justify-content:flex-end; text-align:right }
.ep-nav-arrow{
  font-family:var(--display);
  font-size:22px;
  color: var(--fg-mute);
  flex-shrink:0;
}
.ep-nav-text{ display:flex; flex-direction:column; gap:2px; min-width:0 }
.ep-nav-eyebrow{
  font-family:var(--mono);
  font-size:10.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color: var(--fg-mute);
}
.ep-nav-title{
  font-family:var(--display);
  font-weight:500;
  font-size:15px;
  line-height:1.3;
  color: var(--fg);
  overflow:hidden;
  text-overflow:ellipsis;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
}

/* ── transcript alt link (standalone transcript page) ── */
.ep-tx-alt{
  font-family:var(--mono);
  font-size:12px;
  color: var(--fg-mute);
  margin: 0 0 24px;
}
.ep-tx-alt a{
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

/* ── related episodes ─────────────────────────────── */
.ep-related-sec{ padding:64px 0 }
.related-eps{
  display:grid;
  grid-template-columns: repeat(2, 1fr);
  gap:16px;
}
.related-ep{
  display:flex; flex-direction:column; gap:6px;
  padding:18px 20px;
  border:1px solid var(--line-soft);
  border-radius:12px;
  text-decoration:none;
  color: var(--fg);
  transition: border-color .12s ease, transform .12s ease;
}
.related-ep:hover{ border-color: var(--accent); transform: translateY(-1px) }
.related-ep-num{
  font-family:var(--mono);
  font-size:10.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color: var(--fg-mute);
}
.related-ep-title{
  font-family:var(--display);
  font-weight:500;
  font-size:15.5px;
  line-height:1.3;
  color: var(--fg);
}

/* ── responsive ───────────────────────────────── */
@media (max-width: 860px){
  .ep-hero-grid{ grid-template-columns: 1fr; gap:48px }
  .ep-hero-right{ order:-1; max-width:420px }
  .ep-about{ grid-template-columns: 1fr; gap:32px }
  .ep-about-side{ position:static }

  .player{
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto;
    gap:14px 18px;
    padding:16px;
  }
  .player-tools{ grid-column: 1 / -1; justify-content:space-between }
  .pt-name{ font-size:14px }

  .ep-prev-next{ grid-template-columns: 1fr }
  .ep-nav-next{ justify-content:flex-start; text-align:left }
  .related-eps{ grid-template-columns: 1fr }
}