/* ── Page intro badges ── */
.td-page-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 1rem 0 1.5rem;
}
.td-page-badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-heading, 'Outfit', sans-serif);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.35rem 0.75rem;
  border-radius: 3px;
  line-height: 1.3;
  border: 1.5px solid;
}
.badge-slides { 
  background: #e8f4fd; 
  color: #0991E0; 
  border-color: #0991E0;
}
.badge-lang   { 
  background: #fef8e6; 
  color: #D4941F; 
  border-color: #D4941F;
}
.badge-source { 
  background: #f3e8fd; 
  color: #7c3aed; 
  border-color: #a78bfa;
}
.badge-audio  { 
  background: #fde8ea; 
  color: #d32f2f; 
  border-color: #f87171;
}

/* ── Slide viewer ── */
.slide-viewer {
  margin: 0 0 1.5rem;
  border: 1px solid var(--color-border, #C5CCD3);
  background: #1a1a2e;
  overflow: hidden;
}

.slide-display {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  user-select: none;
}
.slide-display img {
  display: block;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

/* Navigation arrows */
.slide-nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 3rem;
  height: 3rem;
  background: rgba(0,0,0,0.45);
  border: none;
  border-radius: 50%;
  color: #fff;
  font-size: 1.3rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, transform 0.2s;
  z-index: 5;
}
.slide-nav-btn:hover {
  background: rgba(0,0,0,0.7);
  transform: translateY(-50%) scale(1.08);
}
.slide-nav-btn:active { transform: translateY(-50%) scale(0.95); }
.slide-nav-btn[disabled] { opacity: 0.3; cursor: default; pointer-events: none; }
.slide-prev { left: 0.75rem; }
.slide-next { right: 0.75rem; }

/* Toolbar */
.slide-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 1rem;
  background: #111827;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.slide-counter {
  font-family: var(--font-heading, 'Outfit', sans-serif);
  font-size: 0.85rem;
  font-weight: 700;
  color: #e5e7eb;
  letter-spacing: 0.03em;
}
.slide-counter .current { color: #fff; }
.slide-toolbar-actions {
  display: flex;
  gap: 0.5rem;
}

/* ── Thumbnail strip ── */
.slide-thumbstrip {
  display: flex;
  gap: 0.4rem;
  padding: 0.6rem 1rem;
  background: #111827;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: #4b5563 #111827;
}
.slide-thumbstrip::-webkit-scrollbar { height: 6px; }
.slide-thumbstrip::-webkit-scrollbar-track { background: #111827; }
.slide-thumbstrip::-webkit-scrollbar-thumb { background: #4b5563; border-radius: 3px; }
.thumb-item {
  flex-shrink: 0;
  width: 72px;
  cursor: pointer;
  border: 2px solid transparent;
  opacity: 0.5;
  transition: opacity 0.2s, border-color 0.2s;
  position: relative;
}
.thumb-item:hover { opacity: 0.8; }
.thumb-item.active {
  opacity: 1;
  border-color: var(--color-accent-warm, #FFBD0A);
}
.thumb-item img {
  display: block;
  width: 100%;
  height: auto;
}

/* ── Note info ── */
.viewer-note {
  margin: 0 0 1.5rem;
  padding: 0.75rem 1rem;
  background: linear-gradient(135deg, rgba(9, 145, 224, 0.06) 0%, rgba(9, 145, 224, 0.02) 100%);
  border-left: 3px solid var(--color-primary, #1B3A6B);
  font-size: 0.85rem;
  color: var(--color-text-muted, #555);
  line-height: 1.55;
}
.viewer-note strong { color: var(--color-text, #1a1a2e); }

/* ── Tags section ── */
.td-tags-section {
  margin: 0 0 2rem;
}
.td-tags-section h3 {
  font-family: var(--font-heading, 'Outfit', sans-serif);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-text-muted, #6b7280);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0 0 0.75rem;
}
.td-tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.td-tag-item {
  font-size: 0.78rem;
  padding: 0.2rem 0.6rem;
  background: #f3f4f6;
  color: #4b5563;
  border: 1px solid #e5e7eb;
  border-radius: 2px;
}

@media (max-width: 600px) {
  .slide-nav-btn { width: 2.4rem; height: 2.4rem; font-size: 1rem; }
  .slide-prev { left: 0.4rem; }
  .slide-next { right: 0.4rem; }
}

/* ══════════════════════════════════════════════════════════════
   Dark mode — html[data-theme="dark"] provides sufficient
   specificity, no !important needed
   ══════════════════════════════════════════════════════════════ */
html[data-theme="dark"] .viewer-note {
  background: rgba(9, 145, 224, 0.08);
  color: var(--dm-text-muted);
}
html[data-theme="dark"] .viewer-note strong {
  color: var(--dm-text-heading);
}
html[data-theme="dark"] .td-tags-section h3 {
  color: var(--dm-text-muted);
}
html[data-theme="dark"] .slide-viewer {
  border-color: var(--dm-border);
}
html[data-theme="dark"] .td-tag-item {
  background: var(--dm-surface-hi);
  color: var(--dm-text);
  border-color: var(--dm-border);
}
html[data-theme="dark"] .td-resource-section {
  background: var(--dm-surface);
  color: var(--dm-text);
  border-left-color: var(--dm-link);
}
html[data-theme="dark"] .td-resource-section h3 {
  color: var(--dm-text-muted);
}
html[data-theme="dark"] .td-resource-section p {
  color: var(--dm-text);
}
html[data-theme="dark"] .td-resource-section a {
  color: var(--dm-link);
  border-bottom-color: var(--dm-link);
}
html[data-theme="dark"] .badge-slides {
  background: rgba(9, 145, 224, 0.15);
  color: #7ba3d8;
  border-color: #7ba3d8;
}
html[data-theme="dark"] .badge-lang {
  background: rgba(218, 165, 32, 0.15);
  color: #fbbf24;
  border-color: #fbbf24;
}
html[data-theme="dark"] .badge-source {
  background: rgba(124, 58, 237, 0.15);
  color: #c4b5fd;
  border-color: #a78bfa;
}
html[data-theme="dark"] .badge-audio {
  background: rgba(211, 47, 47, 0.15);
  color: #fca5a5;
  border-color: #f87171;
}