:root {
  --paper: #f6f1e8;
  --paper-strong: #fff8ef;
  --ink: #1d1a16;
  --muted: #665b4b;
  --accent: #8c4a1f;
  --accent-soft: #eabf7b;
  --line: rgba(29, 26, 22, 0.12);
  --line-strong: rgba(140, 74, 31, 0.32);
  --panel-bg: rgba(255, 248, 239, 0.84);
  --panel-bg-quiet: rgba(255, 252, 247, 0.68);
  --shadow: 0 24px 60px rgba(79, 49, 27, 0.12);
  --focus-ring: rgba(140, 74, 31, 0.28);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(249, 214, 122, 0.72) 0, rgba(249, 214, 122, 0) 28%),
    radial-gradient(circle at bottom right, rgba(215, 162, 101, 0.35) 0, rgba(215, 162, 101, 0) 26%),
    linear-gradient(180deg, #f6f1e8 0%, #e7ddcc 100%);
}

a {
  color: inherit;
}

button,
input {
  font: inherit;
  color: inherit;
}

.app-shell {
  max-width: 84rem;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 4rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.reader-shell {
  display: grid;
  gap: 0.65rem;
}

.app-shell.reader-shell {
  width: min(100%, 98rem);
  max-width: 98rem;
  height: 100dvh;
  padding: 0.75rem;
  grid-template-rows: auto auto minmax(0, 1fr);
  overflow: hidden;
}

.reader-topbar {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(22rem, 0.85fr);
  gap: 0.65rem;
  min-width: 0;
  align-items: stretch;
}

.hero {
  display: grid;
  gap: 0.9rem;
  margin-bottom: 1.25rem;
  padding: 1.2rem 1.3rem;
  border: 1px solid var(--line);
  border-radius: 1.25rem;
  background: rgba(255, 248, 239, 0.76);
  box-shadow: var(--shadow);
}

.hero-meta,
.status-row,
.scope-tags,
.topic-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
}

.eyebrow {
  margin: 0;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.74rem;
  color: var(--accent);
}

.hero h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.02;
  text-wrap: balance;
}

.hero p,
.panel p,
.section-copy,
.muted {
  color: var(--muted);
}

.hero > p {
  max-width: 60rem;
}

.hero-support {
  max-width: 46rem;
}

.hero p,
.panel p,
.section-copy {
  margin: 0;
  line-height: 1.65;
}

.reader-header {
  display: grid;
  gap: 0.45rem;
  min-width: 0;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: rgba(255, 248, 239, 0.7);
  box-shadow: 0 12px 34px rgba(79, 49, 27, 0.1);
}

.reader-meta {
  gap: 0.5rem;
}

.reader-title-wrap {
  display: grid;
  gap: 0.35rem;
  max-width: 60rem;
}

.reader-state-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem;
  min-width: 0;
}

.reader-state-pill {
  display: grid;
  gap: 0.15rem;
  min-width: 0;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: rgba(255, 252, 247, 0.7);
  box-shadow: 0 12px 30px rgba(79, 49, 27, 0.08);
}

.reader-state-label {
  color: var(--accent);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.reader-state-value {
  font-size: 0.98rem;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.reader-title {
  margin: 0;
  font-size: 1.45rem;
  line-height: 1.08;
  overflow: hidden;
  text-wrap: balance;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.scope-tag,
.topic-chip,
.link-button {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  min-height: 2.6rem;
  padding: 0.55rem 0.82rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  font-size: 0.95rem;
  line-height: 1.2;
}

.reader-header .link-button,
.reader-header .scope-tag {
  min-height: 2.35rem;
  padding: 0.48rem 0.74rem;
  background: rgba(255, 255, 255, 0.78);
}

.reader-back-link {
  color: var(--accent);
}

.reader-video-id {
  font-family: ui-monospace, "SFMono-Regular", "SF Mono", Menlo, Monaco, Consolas, monospace;
  font-size: 0.88rem;
}

.reader-pane-tabs {
  display: none;
}

.reader-workspace {
  display: grid;
  grid-template-columns: minmax(17rem, 0.78fr) minmax(24rem, 1.35fr) minmax(18rem, 0.88fr);
  grid-template-rows: minmax(0, 1fr) minmax(0, 1fr);
  grid-template-areas:
    "tldw highlights outline"
    "tldw highlights transcript";
  gap: 0.65rem;
  min-height: 0;
}

.reader-pane {
  min-width: 0;
  min-height: 0;
}

.reader-tldw-pane {
  grid-area: tldw;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 0.65rem;
  overflow: hidden;
}

.reader-highlights-pane {
  grid-area: highlights;
}

.reader-outline-pane {
  grid-area: outline;
}

.reader-transcript-pane {
  grid-area: transcript;
}

#reader-highlights-region,
#reader-outline-region,
#reader-transcript-region {
  height: 100%;
  min-height: 0;
}

.topic-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.35rem;
  padding: 0.1rem 0.38rem;
  border-radius: 999px;
  background: rgba(140, 74, 31, 0.08);
  color: var(--muted);
  font-size: 0.8rem;
}

.topic-chip,
.reader-pane-tab,
.seek-button,
.form button,
.link-button,
.outline-row,
.highlight-row,
.transcript-row {
  cursor: pointer;
}

.topic-chip[data-active="true"],
.reader-pane-tab[aria-selected="true"],
.seek-button:hover,
.form button:hover,
.link-button:hover,
.reader-pane-tab:hover,
.outline-row:hover,
.highlight-row:hover,
.transcript-row:hover {
  border-color: var(--line-strong);
  background: rgba(234, 191, 123, 0.24);
}

.topic-chip[data-active="true"] {
  color: var(--accent);
  box-shadow: inset 0 0 0 1px rgba(140, 74, 31, 0.14);
}

.reader-pane-tabs {
  gap: 0.4rem;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  padding: 0.25rem;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: rgba(255, 252, 247, 0.72);
}

.reader-pane-tab {
  min-width: 0;
  min-height: 2.45rem;
  padding: 0.45rem 0.5rem;
  border: 1px solid transparent;
  border-radius: 0.55rem;
  background: transparent;
  color: var(--muted);
  line-height: 1.15;
}

.reader-pane-tab[aria-selected="true"] {
  color: var(--accent);
  background: rgba(255, 255, 255, 0.82);
}

.reader-stage {
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 1.45fr) minmax(18rem, 0.9fr);
  align-items: start;
}

.reader-stage-sidebar {
  display: grid;
  gap: 1rem;
}

.reader-layout {
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 1.25fr) minmax(19rem, 0.85fr);
  align-items: start;
}

.reader-sidebar {
  display: grid;
  gap: 1rem;
}

.panel {
  display: grid;
  gap: 0.9rem;
  padding: 0.95rem;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: var(--panel-bg);
  box-shadow: 0 14px 36px rgba(79, 49, 27, 0.1);
  min-height: 0;
}

.panel h2,
.panel h3,
.panel h4,
.panel strong {
  margin: 0;
  color: var(--ink);
}

.panel-header {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: space-between;
  align-items: flex-start;
}

.panel-title-group {
  display: grid;
  gap: 0.18rem;
  min-width: 0;
}

.panel-header h2 {
  font-size: 1.28rem;
  line-height: 1.15;
  text-wrap: balance;
}

.panel-subheader {
  display: grid;
  gap: 0.2rem;
}

.panel-status {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.2rem;
  padding: 0.42rem 0.76rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.58);
  line-height: 1.3;
}

.player-panel {
  gap: 0.85rem;
  align-content: start;
}

.summary-panel {
  background: var(--panel-bg-quiet);
  overflow-y: auto;
}

.player-frame-shell {
  position: relative;
  overflow: hidden;
  border-radius: 0.75rem;
  background:
    linear-gradient(135deg, rgba(29, 26, 22, 0.92), rgba(42, 49, 54, 0.92)),
    linear-gradient(90deg, rgba(234, 191, 123, 0.18), rgba(103, 137, 132, 0.2));
}

.player-frame {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 0;
  background: transparent;
}

.player-frame-overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 1rem;
  background: linear-gradient(135deg, rgba(29, 26, 22, 0.92), rgba(45, 55, 60, 0.82));
  color: #fff8ef;
  font-size: 0.95rem;
  pointer-events: none;
  transition: opacity 180ms ease;
}

.player-frame-shell[data-player-state="loaded"] .player-frame-overlay {
  opacity: 0;
}

.player-frame-shell[data-player-state="error"] .player-frame-overlay {
  opacity: 1;
}

.player-fallback-link {
  position: absolute;
  right: 0.55rem;
  bottom: 0.55rem;
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.35rem 0.58rem;
  border: 1px solid rgba(255, 248, 239, 0.22);
  border-radius: 999px;
  background: rgba(29, 26, 22, 0.72);
  color: #fff8ef;
  font-size: 0.82rem;
  text-decoration: none;
}

.summary-takeaways {
  display: grid;
  gap: 0.5rem;
  margin: 0;
  padding: 0 0 0 1.15rem;
}

.summary-lede {
  font-size: 1rem;
  line-height: 1.6;
}

.summary-context {
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.55;
  padding-top: 0.2rem;
  border-top: 1px solid var(--line);
}

.summary-takeaways li {
  color: var(--muted);
  line-height: 1.55;
}

.topic-block,
.transcript-preview-shell,
.transcript-expanded {
  display: grid;
  gap: 0.7rem;
  padding-top: 0.2rem;
  border-top: 1px solid var(--line);
}

.compact-empty {
  padding: 0.72rem 0.8rem;
}

.compact-topic-row {
  gap: 0.5rem;
}

.highlights-panel {
  gap: 0.85rem;
  height: 100%;
  grid-template-rows: auto auto minmax(0, 1fr) auto;
}

.outline-list {
  display: grid;
  gap: 0.45rem;
}

.highlight-list,
.search-match-list,
.transcript-nearby-list,
.transcript-full-list,
.transcript-preview {
  display: grid;
  gap: 0.55rem;
}

.outline-panel,
.transcript-panel {
  gap: 0.75rem;
  height: 100%;
}

.outline-panel {
  grid-template-rows: auto minmax(0, 1fr) auto;
}

.transcript-panel {
  overflow-y: auto;
}

.outline-row,
.highlight-row,
.transcript-row {
  width: 100%;
  padding: 0.78rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 0.95rem;
  background: rgba(255, 255, 255, 0.62);
  text-align: left;
  transition:
    border-color 180ms ease,
    background 180ms ease,
    transform 180ms ease;
}

.outline-row[data-active="true"],
.highlight-row[data-active="true"],
.transcript-row-active {
  border-color: var(--line-strong);
  background: rgba(234, 191, 123, 0.18);
}

.outline-row,
.transcript-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.68rem;
  align-items: start;
}

.outline-row {
  padding: 0.62rem 0.78rem;
}

.highlight-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.75rem;
  align-items: start;
}

.transcript-row {
  padding: 0.7rem 0.8rem;
}

.outline-row-copy,
.highlight-row-copy,
.transcript-row-copy {
  display: grid;
  gap: 0.18rem;
  min-width: 0;
}

.outline-row-copy strong,
.highlight-row-copy strong,
.transcript-row-copy strong {
  font-size: 0.97rem;
  line-height: 1.4;
}

.outline-row-copy strong {
  display: -webkit-box;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 1;
}

.search-match-list .transcript-row-copy strong,
.transcript-preview-shell .transcript-row-copy strong {
  display: -webkit-box;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.highlight-summary {
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.45;
  display: -webkit-box;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.outline-summary {
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
  display: -webkit-box;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.row-badge {
  align-self: center;
  justify-self: end;
  max-width: 13rem;
  overflow: hidden;
  padding: 0.3rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(234, 191, 123, 0.14);
  color: var(--muted);
  font-size: 0.8rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.timestamp {
  min-width: 3.55rem;
  color: var(--accent);
  font-size: 0.88rem;
}

.outline-row .timestamp,
.transcript-row .timestamp {
  min-width: 3.2rem;
}

.search-result-row {
  background: rgba(234, 191, 123, 0.14);
}

.transcript-preview-header {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: space-between;
  align-items: center;
  font-size: 0.92rem;
}

.panel-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.panel-scroll {
  min-height: 0;
  overflow-y: auto;
  padding-right: 0.12rem;
  scrollbar-gutter: stable;
}

.form-label {
  display: block;
  font-size: 0.84rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
}

.form {
  display: grid;
  gap: 0.9rem;
  max-width: 36rem;
}

.search-form {
  display: grid;
  gap: 0.75rem;
}

.form input,
.search-form input {
  width: 100%;
  min-height: 3rem;
  padding: 0.95rem 1rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.74);
}

.seek-button,
.form button,
.link-button {
  border: 1px solid var(--line);
  border-radius: 999px;
  min-height: 2.6rem;
  padding: 0.68rem 0.95rem;
  background: rgba(255, 255, 255, 0.74);
}

.seek-button {
  justify-self: start;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
  border-color: rgba(140, 74, 31, 0.5);
}

.create-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr 0.9fr;
  align-items: start;
}

.detail-list {
  display: grid;
  gap: 0.75rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.detail-list li {
  display: grid;
  gap: 0.45rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.56);
}

.error-card {
  padding: 1rem;
  border: 1px solid rgba(140, 74, 31, 0.25);
  border-radius: 1rem;
  background: rgba(140, 74, 31, 0.08);
  color: #6d3310;
}

.info-card {
  padding: 1rem;
  border: 1px solid rgba(140, 74, 31, 0.16);
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.68);
  color: var(--muted);
}

.empty-state {
  padding: 1rem;
  border: 1px dashed var(--line);
  border-radius: 1rem;
  color: var(--muted);
}

.compact-note {
  margin: 0;
  font-size: 0.92rem;
}

.transcript-expanded {
  max-height: 22rem;
  overflow-y: auto;
  padding-right: 0.15rem;
}

@media (max-width: 1100px) {
  .app-shell.reader-shell {
    width: 100%;
    padding: 0.65rem;
    grid-template-rows: auto auto minmax(0, 1fr);
  }

  .reader-topbar {
    grid-template-columns: 1fr;
  }

  .reader-header {
    padding: 0.62rem 0.72rem;
  }

  .reader-title {
    font-size: 1.28rem;
    -webkit-line-clamp: 2;
  }

  .reader-state-row {
    display: flex;
    gap: 0.5rem;
    overflow-x: auto;
    padding-bottom: 0.1rem;
    scrollbar-gutter: stable;
  }

  .reader-state-pill {
    min-width: 10.5rem;
  }

  .reader-pane-tabs {
    display: grid;
  }

  .reader-workspace {
    display: block;
    overflow: hidden;
  }

  .reader-pane {
    display: none;
    height: 100%;
    overflow: hidden;
  }

  .reader-shell[data-active-pane="tldw"] [data-reader-pane="tldw"],
  .reader-shell[data-active-pane="highlights"] [data-reader-pane="highlights"],
  .reader-shell[data-active-pane="outline"] [data-reader-pane="outline"],
  .reader-shell[data-active-pane="transcript"] [data-reader-pane="transcript"] {
    display: grid;
  }

  .reader-tldw-pane {
    grid-template-rows: auto minmax(0, 1fr);
    overflow-y: auto;
  }

  .reader-highlights-pane,
  .reader-outline-pane,
  .reader-transcript-pane {
    grid-template-rows: minmax(0, 1fr);
  }

  .player-panel {
    align-content: start;
  }

  .summary-panel {
    min-height: 0;
  }
}

@media (max-width: 960px) {
  .reader-stage,
  .reader-layout,
  .create-grid {
    grid-template-columns: 1fr;
  }

  .reader-state-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .row-badge {
    justify-self: start;
  }
}

@media (max-width: 720px) {
  .app-shell {
    padding: 1rem 0.9rem 3rem;
  }

  .hero,
  .panel,
  .reader-header {
    padding: 1rem;
  }

  .hero {
    gap: 0.75rem;
  }

  .hero h1 {
    font-size: clamp(1.9rem, 10vw, 2.6rem);
  }

  .reader-title {
    font-size: 1.18rem;
  }

  .reader-state-row {
    display: grid;
    grid-template-columns: 1fr;
    overflow-x: visible;
    padding-bottom: 0;
  }

  .reader-header .link-button,
  .reader-header .scope-tag,
  .scope-tag,
  .topic-chip,
  .link-button,
  .seek-button,
  .form button {
    min-height: 2.45rem;
    padding: 0.54rem 0.76rem;
  }

  .panel-header {
    flex-direction: column;
    align-items: stretch;
    gap: 0.55rem;
  }

  .panel-status {
    align-self: flex-start;
    justify-content: flex-start;
  }

  .outline-row,
  .transcript-row {
    padding: 0.62rem 0.72rem;
  }

  .highlight-row {
    grid-template-columns: auto 1fr;
  }

  .row-badge {
    grid-column: 2;
    max-width: 100%;
    justify-self: start;
  }
}

@media (max-width: 480px) {
  .app-shell {
    padding: 0.85rem 0.75rem 2.5rem;
  }

  .hero,
  .panel,
  .reader-header,
  .reader-state-pill {
    padding: 0.9rem;
    border-radius: 1.05rem;
  }

  .hero h1 {
    font-size: clamp(1.7rem, 11vw, 2.2rem);
    line-height: 1;
  }

  .reader-title {
    font-size: 1.08rem;
    line-height: 1.04;
  }

  .reader-channel-tag {
    display: none;
  }

  .reader-state-pill {
    min-width: 0;
  }

  .reader-pane-tab {
    min-height: 2.25rem;
    padding: 0.38rem 0.34rem;
    font-size: 0.88rem;
  }

  .hero-tags,
  .reader-meta,
  .topic-row,
  .scope-tags {
    gap: 0.45rem;
  }

  .form input,
  .search-form input {
    min-height: 2.8rem;
    padding: 0.82rem 0.88rem;
  }

  .reader-header .link-button,
  .reader-header .scope-tag,
  .scope-tag,
  .topic-chip,
  .link-button {
    font-size: 0.91rem;
  }

  .reader-video-id {
    font-size: 0.82rem;
  }

  .player-frame {
    border-radius: 0.9rem;
  }
}

@media (max-width: 360px) {
  .reader-header .link-button,
  .reader-header .scope-tag {
    padding: 0.46rem 0.64rem;
  }

  .timestamp {
    min-width: 3.15rem;
    font-size: 0.84rem;
  }
}