/* Small link/button row under the teaching header (YouTube, Export, Copy JSON) */
.detail-action {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--fg-2);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-lg);
  padding: 0.55rem 0.9rem;
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  line-height: 1.3;
  text-decoration: none;
  cursor: pointer;
}

.detail-action svg { flex-shrink: 0; }

.detail-action--primary {
  background: var(--fg-0);
  border-color: var(--fg-0);
  color: var(--bg-0);
}

.detail-action--danger {
  border-color: var(--warm-border);
  color: var(--warm);
}

.detail-action:hover:not(:disabled) {
  background: var(--bg-2);
  border-color: var(--fg-0);
  color: var(--fg-0);
}
.detail-action--primary:hover:not(:disabled) {
  background: var(--fg-2);
  border-color: var(--fg-2);
  color: var(--bg-0);
}

.detail-action:disabled { cursor: default; opacity: 0.75; }

.teaching-detail-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-7);
}

/* The teaching page narrows to a reading measure below the cover. */
.reading-column {
  max-width: 47rem;
  margin-inline: auto;
}

.detail-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-5);
  text-align: center;
  margin-bottom: var(--space-7);
}

.detail-header__title {
  font-family: var(--serif);
  font-size: 3.1rem;
  font-weight: 600;
  line-height: 1.06;
  letter-spacing: -0.022em;
  color: var(--fg-0);
  margin: 0;
  text-wrap: pretty;
}

.detail-header__byline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.detail-header__byline .meta-label--strong { color: var(--fg-2); }

.detail-byline-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--rule-strong);
}

.detail-cover {
  display: block;
  width: 100%;
  max-width: 62rem;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: var(--bg-2);
  margin: 0 auto var(--space-6);
}

.detail-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--rule);
}

.detail-actions__visibility {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-left: auto;
}

.detail-actions__visibility select {
  width: auto;
  min-width: 12rem;
  padding: 0.5rem 2.25rem 0.5rem 0.75rem;
}

.detail-section {
  border-top: 1px solid var(--rule);
  padding-top: var(--space-6);
  margin-top: var(--space-6);
}

.detail-section:first-of-type {
  border-top: 0;
  padding-top: 0;
  margin-top: var(--space-7);
}

.detail-disclosure {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  padding: 0.4rem 0;
  background: transparent;
  border: 0;
  cursor: pointer;
  text-align: left;
  color: inherit;
  font-family: var(--sans);
}

.detail-disclosure::-webkit-details-marker { display: none; }
.detail-disclosure::marker { content: ''; }

details[open] > .detail-disclosure .detail-disclosure__chevron {
  transform: rotate(180deg);
}

.detail-disclosure__chevron {
  flex-shrink: 0;
  width: 1.05rem;
  height: 1.05rem;
  color: var(--fg-5);
  transition: transform 0.2s;
}

.detail-section__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: var(--space-5);
}

.pull-quote-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.detail-transcript {
  white-space: pre-wrap;
  word-break: break-word;
  font-family: var(--sans);
  font-size: 0.88rem;
  color: var(--fg-3);
  line-height: 1.7;
  background: var(--bg-2);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  margin: 0.9rem 0 0;
  max-height: 26rem;
  overflow: auto;
}

.detail-tech {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  gap: 0.4rem 1.25rem;
  margin: 0.9rem 0 0;
  font-size: 0.82rem;
  color: var(--fg-4);
}

.detail-tech dt { margin: 0; }

.detail-tech dd {
  margin: 0;
  color: var(--fg-2);
  word-break: break-all;
}

.detail-tech code { font-family: var(--mono); }

.detail-destructive {
  display: flex;
  justify-content: flex-end;
  border-top: 1px solid var(--rule);
  margin-top: var(--space-8);
  padding-top: var(--space-6);
}

/* The generated text cover fills the same 16:9 slot as a real one. */
.teaching-cover-preview--detail {
  aspect-ratio: 16 / 9;
  margin-bottom: 1.5rem;
}

@media (max-width: 640px) {
  .detail-header__title { font-size: 2.1rem; }
}

/* Cover preview on the edit page. */
.edit-cover-preview {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-top: 0.5rem;
}

.edit-cover-empty {
  margin: 0.5rem 0 0;
  font-size: 0.85rem;
  color: var(--fg-4);
}