/* ============================================================
   READER PAGE
   ============================================================ */

/* Top bar */
.reader-topbar {
  background: var(--bg-dark);
  color: var(--text-light);
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}
.reader-topbar .back-link {
  color: var(--accent-gold);
  font-family: var(--font-ui);
  font-size: 0.85rem;
}
.reader-topbar .title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-light);
}

/* Layout */
.reader-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: calc(100vh - 52px);
}

/* Sidebar */
.reader-sidebar {
  background: var(--bg-card);
  border-right: 1px solid #e0dcd4;
  padding: 1.5rem 1rem;
  overflow-y: auto;
  max-height: calc(100vh - 52px);
  position: sticky;
  top: 52px;
}
.sidebar-section {
  margin-bottom: 1.5rem;
}
.sidebar-section h3 {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

/* Layer toggles */
.layer-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0;
  cursor: pointer;
  font-family: var(--font-ui);
  font-size: 0.85rem;
}
.layer-toggle input[type="checkbox"] {
  accent-color: var(--accent-dark);
}
.layer-toggle .layer-swatch {
  width: 12px;
  height: 12px;
  border-radius: 2px;
}

/* Sidebar legends */
.sidebar-divider {
  border: none;
  border-top: 1px solid #e0dcd4;
  margin: 0.75rem 0;
}
.legend-block { margin-top: 14px; }
.legend-title {
  font-family: var(--font-ui);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
  font-family: var(--font-ui);
  font-size: 11px;
  color: var(--text-muted);
}
.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.legend-line {
  width: 20px;
  height: 2px;
  flex-shrink: 0;
}

/* Show/hide legends based on layers */
#legend-topics { display: none; }
.layer-topics #legend-topics { display: block; }

/* TOC nav */
.toc-nav {
  list-style: none;
}
.toc-nav li {
  margin-bottom: 0.25rem;
}
.toc-nav a {
  font-family: var(--font-ui);
  font-size: 0.8rem;
  color: var(--text-muted);
  display: block;
  padding: 0.2rem 0.5rem;
  border-radius: 3px;
  transition: background 0.15s;
}
.toc-nav a:hover {
  background: var(--bg-code);
  text-decoration: none;
}
.toc-nav a.active {
  color: var(--accent-dark);
  font-weight: 500;
  background: rgba(200, 133, 42, 0.08);
}
.toc-book {
  font-weight: 600;
  color: var(--text-body) !important;
  margin-top: 0.5rem;
}

/* Search */
.search-box {
  position: relative;
  margin-bottom: 1rem;
}
.search-box input {
  width: 100%;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  padding: 0.5rem 0.75rem;
  border: 1px solid #d0ccc4;
  border-radius: 4px;
  background: #fff;
  outline: none;
}
.search-box input:focus {
  border-color: var(--accent-dark);
  box-shadow: 0 0 0 2px rgba(200, 133, 42, 0.15);
}
.search-mode-toggle {
  display: flex;
  gap: 0;
  margin-top: 0.5rem;
}
.search-mode-toggle button {
  flex: 1;
  font-family: var(--font-ui);
  font-size: 0.7rem;
  padding: 0.3rem;
  border: 1px solid #d0ccc4;
  background: #fff;
  cursor: pointer;
  color: var(--text-muted);
}
.search-mode-toggle button:first-child { border-radius: 3px 0 0 3px; }
.search-mode-toggle button:last-child { border-radius: 0 3px 3px 0; }
.search-mode-toggle button.active {
  background: var(--accent-dark);
  color: #fff;
  border-color: var(--accent-dark);
}
.search-results {
  margin-top: 0.75rem;
  max-height: 200px;
  overflow-y: auto;
}
.search-result {
  font-family: var(--font-ui);
  font-size: 0.8rem;
  padding: 0.4rem 0.5rem;
  border-radius: 3px;
  cursor: pointer;
  color: var(--text-muted);
  border-bottom: 1px solid #f0ebe0;
}
.search-result:hover {
  background: var(--bg-code);
}
.search-result .sr-idx {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-dark);
}
.search-status {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* Main reader area */
.reader-main {
  padding: 2rem 2.5rem;
  max-width: 780px;
}

/* Sentence rendering */
.sent {
  display: inline;
  line-height: 1.85;
  font-size: calc(0.85em + (var(--pr, 0.3) * 0.55em));
  transition: background 0.15s, font-size 0.3s ease;
}
/* When PageRank layer is OFF, reset all sentences to base size */
body:not(.layer-pagerank) .sent {
  font-size: 1rem;
}
.sent:hover {
  background: rgba(232, 201, 126, 0.12);
}
.sent.highlight {
  background: rgba(200, 133, 42, 0.15);
}

/* Book / chapter headings */
.book-heading {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 2.5rem 0 0.5rem;
  padding-top: 1.5rem;
  border-top: 2px solid var(--accent-gold);
  color: var(--text-body);
}
.chapter-heading {
  font-size: 1rem;
  font-weight: 600;
  margin: 1.5rem 0 0.5rem;
  color: var(--text-muted);
}

/* --- Chunks --- */
.chunk {
  position: relative;
  padding-left: 0.75rem;
  margin-bottom: 0.25rem;
  border-radius: 3px;
  background-color: transparent;
  transition: background-color 0.3s ease;
}
.layer-topics .chunk {
  border-left: 3px solid;
  background-color: var(--chunk-bg);
}
body:not(.layer-topics) .chunk {
  border-left-color: transparent !important;
}

/* Topic badge */
.topic-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  display: none;
  align-items: center;
  gap: 5px;
  background: white;
  border: 0.5px solid #e0dcd4;
  border-radius: 12px;
  padding: 2px 8px 2px 5px;
  font-family: var(--font-ui);
  font-size: 10px;
  color: var(--text-muted);
  pointer-events: none;
}
.layer-topics .topic-badge { display: flex; }
.topic-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.topic-kw {
  font-family: var(--font-ui);
}

/* --- Layer: Entities (underline + tooltip) --- */
.layer-entities .ent {
  border-bottom: 2px solid;
  cursor: pointer;
  position: relative;
}
.ent[data-type="PERSON"] { border-color: var(--ent-person); }
.ent[data-type="GPE"] { border-color: var(--ent-gpe); }
.ent[data-type="ORG"] { border-color: var(--ent-org); }
.ent[data-type="NORP"] { border-color: var(--ent-norp); }
.ent[data-type="DATE"] { border-color: var(--ent-date); }
.ent[data-type="LOC"] { border-color: var(--ent-gpe); }

/* Entity tooltip (dynamically created) */
.entity-tooltip {
  position: absolute;
  bottom: calc(100% + 6px);
  left: 0;
  z-index: 1000;
  background: white;
  border: 0.5px solid #e0dcd4;
  border-radius: 8px;
  padding: 12px 14px;
  width: 220px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.10);
  pointer-events: none;
  font-style: normal;
}
.entity-tooltip .tooltip-link { pointer-events: auto; }
.tooltip-type {
  font-family: var(--font-ui);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--accent-dark);
  margin-bottom: 4px;
}
.tooltip-name {
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-body);
  margin-bottom: 6px;
}
.tooltip-link {
  font-family: var(--font-ui);
  font-size: 12px;
  color: #3a7abf;
  text-decoration: none;
}

/* --- Layer: Metaphors (token highlighting) --- */
.layer-metaphors .met-token {
  padding: 0 2px;
  border-radius: 2px;
}
.layer-metaphors .met-token.orientational {
  border-bottom: 2px dotted var(--met-orientational);
}
.layer-metaphors .met-token.structural {
  border-bottom: 2px dashed var(--met-structural);
}
.layer-metaphors .met-token.rhetorical {
  background: rgba(200, 133, 42, 0.15);
  border-bottom: 2px solid var(--met-rhetorical);
}

/* --- Layer classes on body --- */
body:not(.layer-entities) .ent { border-bottom-color: transparent !important; }
body:not(.layer-entities) .entity-tooltip { display: none !important; }
body:not(.layer-metaphors) .met-token { border-bottom-color: transparent !important; background: none !important; }

/* Loading indicator */
.loading-overlay {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4rem;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  color: var(--text-muted);
}
.loading-overlay .spinner {
  width: 24px;
  height: 24px;
  border: 3px solid #e0dcd4;
  border-top-color: var(--accent-dark);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-right: 0.75rem;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Responsive */
@media (max-width: 768px) {
  .reader-layout {
    grid-template-columns: 1fr;
  }
  .reader-sidebar {
    position: static;
    max-height: none;
    border-right: none;
    border-bottom: 1px solid #e0dcd4;
  }
  .reader-main {
    padding: 1.5rem 1rem;
  }
}