/* ============================================================
   墨韵纸香 — Module-specific page styles
   Reader layout · Character grid · Worldview tabs & timeline
   All colors via CSS variables. No hardcoded hex.
   ============================================================ */

/* ---------- Reader layout ---------- */
.reader-bar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--container-gutter-desktop);
}
.reader-back, .reader-fwd {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--fg-2);
  text-decoration: none;
  background: none;
  border: none;
  cursor: pointer;
}
.reader-back:hover, .reader-fwd:hover { color: var(--accent); }
.reader-back svg, .reader-fwd svg { width: 18px; height: 18px; }
.reader-ch-title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  color: var(--fg);
  font-weight: 500;
  text-align: center;
  flex: 1;
}
.reader-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-12);
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 88px var(--container-gutter-desktop) var(--space-20);
}
.reader-toc {
  position: sticky;
  top: 88px;
  align-self: start;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
}
.reader-toc h4 {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}
.toc-link {
  display: block;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--fg-2);
  text-decoration: none;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
  transition: all var(--motion-fast) var(--ease-standard);
}
.toc-link:hover { color: var(--accent); background: var(--surface-warm); }
.toc-link--active { color: var(--accent); border-left-color: var(--accent); font-weight: 500; }
.reader-main { max-width: var(--reading-width); margin: 0 auto; width: 100%; }
.chapter-head { margin-bottom: var(--space-8); }
.reader-toc-mobile { display: none; }

/* ---------- Character grid ---------- */
.character-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  max-width: 52rem;
}
.character-card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-8);
  box-shadow: var(--elev-raised);
}
.character-card__head {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}
.character-card__avatar {
  flex: 0 0 auto;
  width: 56px; height: 56px;
  border-radius: var(--radius-pill);
  display: flex; align-items: center; justify-content: center;
  background: var(--surface-warm);
  border: 1px solid var(--border);
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--accent);
  font-style: italic;
}
.character-card__id { min-width: 0; }
.character-name {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 600;
  margin: 0;
  line-height: 1.2;
}
.character-title {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  color: var(--accent);
  font-style: italic;
  margin: 0 0 var(--space-4);
}
.character-card__badges {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-top: var(--space-2);
}
.char-badge {
  display: inline-flex;
  align-items: center;
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-pill);
  background: var(--surface-warm);
  border: 1px solid var(--border);
  color: var(--fg-2);
}
.char-badge--source {
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 35%, var(--border));
}
.character-card__bio {
  position: relative;
  max-width: var(--reading-width);
}
.character-card__bio[data-collapsed='true'] {
  max-height: 16rem;
  overflow: hidden;
}
.character-card__bio[data-collapsed='true']::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 5rem;
  background: linear-gradient(to bottom, transparent, var(--surface));
  pointer-events: none;
}
.character-card__toggle {
  margin-top: var(--space-4);
  background: none;
  border: none;
  color: var(--accent);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  cursor: pointer;
  padding: 0;
}
.character-card__toggle:hover { text-decoration: underline; }
.character-meta-row {
  display: flex;
  justify-content: space-between;
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--border-soft);
  font-size: var(--text-sm);
}
.character-meta-row:last-child { border-bottom: none; }

/* ---------- Worldview tabs ---------- */
.tab-list {
  display: flex;
  gap: var(--space-1);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
}
.tab-button {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--fg-2);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  padding: var(--space-3) var(--space-4);
  cursor: pointer;
  transition: color var(--motion-fast) var(--ease-standard);
  margin-bottom: -1px;
}
.tab-button:hover { color: var(--accent); }
.tab-button--active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 500; }
.tab-panel { display: none; animation: fadeIn var(--motion-base) var(--ease-standard); }
.tab-panel--active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* ---------- Timeline ---------- */
.timeline { position: relative; padding-left: var(--space-6); }
.timeline::before {
  content: '';
  position: absolute;
  left: 7px; top: 4px; bottom: 4px;
  width: 1px;
  background: var(--border);
}
.timeline-item { position: relative; padding-bottom: var(--space-8); }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: -25px; top: 6px;
  width: 9px; height: 9px;
  border-radius: var(--radius-pill);
  background: var(--surface);
  border: 2px solid var(--accent);
}
.timeline-era {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--accent);
  letter-spacing: 0.08em;
  margin-bottom: var(--space-1);
}
.timeline-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  margin-bottom: var(--space-2);
}
.timeline-desc { color: var(--muted); font-size: var(--text-sm); line-height: 1.7; max-width: 36rem; }

/* ---------- Faction & culture cards ---------- */
.faction-card, .culture-card { margin-bottom: var(--space-6); }
.faction-card__head, .culture-card__head {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}
.faction-card__icon, .culture-card__icon {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  background: var(--surface-warm);
  border-radius: var(--radius-sm);
  color: var(--accent);
}
.faction-card__icon svg, .culture-card__icon svg { width: 20px; height: 20px; }