/* =====================================================
   THE CODEX — ornate sidebar navigation
   Loaded after style.css; .sidebar-scoped so it wins.
   The unfurl (max-height) animation lives in style.css
   and is intentionally left intact.
   ===================================================== */

/* Faint stone-and-gold field behind the chapters */
.sidebar .nav-section {
  background:
    radial-gradient(120% 55% at 50% 0%, rgba(201, 162, 39, 0.05), transparent 65%),
    linear-gradient(180deg, rgba(18, 16, 12, 0.35), rgba(8, 7, 6, 0.45));
}

/* ---------- Chapter heading (category) ---------- */
.sidebar .nav-category {
  border-bottom: none;
}
.sidebar .nav-category-header {
  position: relative;
}
.sidebar .nav-category-header .cat-name-area {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 1rem 0.9rem 0.9rem;
}
/* gold flourish rules flanking the centered chapter title */
.sidebar .nav-category-header .cat-name-area::before,
.sidebar .nav-category-header .cat-name-area::after {
  content: "";
  flex: 1 1 auto;
  height: 1px;
  transition: background var(--transition-normal), box-shadow var(--transition-normal);
}
.sidebar .nav-category-header .cat-name-area::before {
  background: linear-gradient(90deg, transparent, rgba(201, 162, 39, 0.4));
}
.sidebar .nav-category-header .cat-name-area::after {
  background: linear-gradient(90deg, rgba(201, 162, 39, 0.4), transparent);
}
.sidebar .nav-category-header .cat-icon {
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  color: var(--gold-deep);
  filter: drop-shadow(0 0 5px rgba(201, 162, 39, 0.4));
  transition: color var(--transition-normal), filter var(--transition-normal);
}
.sidebar .nav-category-header .cat-name {
  flex: 0 0 auto;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--bone);
  background: none;
  -webkit-text-fill-color: currentColor;
  transition: color var(--transition-normal), letter-spacing var(--transition-normal), text-shadow var(--transition-normal);
}
.sidebar .nav-category-header .cat-count {
  flex: 0 0 auto;
  font-family: var(--font-display);
  font-size: 0.74rem;
  color: var(--gold-deep);
  background: none;
  border: none;
  padding: 0;
  opacity: 0.85;
}
.sidebar .nav-category-header .cat-toggle { padding: 0.75rem 0.6rem; }
.sidebar .nav-category-header .chevron {
  width: 13px;
  height: 13px;
  color: var(--gold-deep);
  opacity: 0.7;
}

/* hover / open: the chapter illuminates */
.sidebar .nav-category-header:hover .cat-name,
.sidebar .nav-category.open .cat-name {
  color: var(--gold-bright);
  letter-spacing: 0.25em;
  text-shadow: 0 0 12px rgba(232, 192, 64, 0.35);
}
.sidebar .nav-category-header:hover .cat-icon,
.sidebar .nav-category.open .cat-icon {
  color: var(--gold-bright);
  filter: drop-shadow(0 0 9px rgba(232, 192, 64, 0.6));
}
.sidebar .nav-category.open > .nav-category-header {
  background: linear-gradient(180deg, rgba(201, 162, 39, 0.06), transparent);
  box-shadow: none;
}
.sidebar .nav-category.open .cat-name-area::before {
  background: linear-gradient(90deg, transparent, var(--gold-bright));
  box-shadow: 0 0 8px rgba(201, 162, 39, 0.35);
}
.sidebar .nav-category.open .cat-name-area::after {
  background: linear-gradient(90deg, var(--gold-bright), transparent);
  box-shadow: 0 0 8px rgba(201, 162, 39, 0.35);
}

/* ---------- Entries: fleuron-marked chapter lines ---------- */
.sidebar .nav-item {
  position: relative;
  padding: 0.42rem 1rem 0.42rem 2.6rem;
  border-left: none;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text-dim);
}
.sidebar .nav-item::before {
  content: "\2767"; /* rotated floral heart bullet */
  position: absolute;
  left: 1.3rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gold-deep);
  opacity: 0.5;
  font-size: 0.8rem;
  transition: color var(--transition-fast), opacity var(--transition-fast), transform var(--transition-fast);
}
.sidebar .nav-item:hover {
  background: linear-gradient(90deg, rgba(201, 162, 39, 0.07), transparent);
  color: var(--bone);
}
.sidebar .nav-item:hover::before {
  color: var(--gold-bright);
  opacity: 1;
  transform: translateY(-50%) translateX(2px);
}
.sidebar .nav-item.active {
  color: var(--gold-bright);
  background: linear-gradient(90deg, rgba(139, 26, 50, 0.22), rgba(201, 162, 39, 0.1) 60%, transparent);
}
.sidebar .nav-item.active::before {
  color: var(--gold-bright);
  opacity: 1;
}

/* ---------- Region sub-chapters ---------- */
.sidebar .nav-subcategory {
  margin: 0.1rem 0.5rem 0.1rem 1.3rem;
}
.sidebar .nav-subcategory-header {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.7rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}
.sidebar .nav-subcategory.expanded > .nav-subcategory-header {
  background: linear-gradient(90deg, rgba(201, 162, 39, 0.07), transparent);
}
.sidebar .nav-subcategory.expanded > .nav-subcategory-header::after {
  content: "";
  position: absolute;
  left: 0.7rem;
  right: 0.7rem;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--gold-deep), transparent 75%);
}
.sidebar .nav-subcategory-header .sub-icon {
  width: 13px;
  height: 13px;
  color: var(--gold-deep);
  opacity: 0.85;
  transition: color var(--transition-fast), filter var(--transition-fast);
}
.sidebar .nav-subcategory-header:hover .sub-icon,
.sidebar .nav-subcategory.expanded > .nav-subcategory-header .sub-icon {
  color: var(--gold-bright);
  filter: drop-shadow(0 0 6px rgba(232, 192, 64, 0.5));
}
.sidebar .nav-subcategory-header .sub-name {
  font-family: var(--font-ui);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.68rem;
  color: var(--text-dim);
  transition: color var(--transition-fast), letter-spacing var(--transition-fast);
}
.sidebar .nav-subcategory-header:hover .sub-name,
.sidebar .nav-subcategory.expanded > .nav-subcategory-header .sub-name {
  color: var(--gold);
  letter-spacing: 0.2em;
}
.sidebar .nav-subcategory-header .sub-count {
  margin-left: auto;
  font-family: var(--font-display);
  color: var(--gold-deep);
  background: none;
  border: none;
  padding: 0;
  font-size: 0.7rem;
}

/* ---------- Gilded entry-spine (nested entries) ---------- */
.sidebar .nav-subcategory-items,
.sidebar .nav-item-children {
  position: relative;
  margin-left: 1.55rem;
  padding-left: 0;
}
.sidebar .nav-subcategory.expanded .nav-subcategory-items::before,
.sidebar .nav-item-parent.expanded .nav-item-children::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.35rem;
  bottom: 0.35rem;
  width: 1px;
  background: linear-gradient(180deg, transparent, rgba(201, 162, 39, 0.4) 12%, rgba(201, 162, 39, 0.4) 88%, transparent);
}
.sidebar .nav-subcategory-items .nav-item,
.sidebar .nav-item-children .nav-item {
  padding: 0.3rem 0.7rem 0.3rem 0.95rem;
  font-size: 0.95rem;
}
/* branch-tick reaching from the spine to each portrait */
.sidebar .nav-subcategory-items .nav-item::after,
.sidebar .nav-item-children .nav-item::after {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 0.9rem;
  height: 1px;
  background: rgba(201, 162, 39, 0.3);
  transform: translateY(-50%);
  z-index: 0;
}
.sidebar .nav-subcategory-items .nav-item:hover::after,
.sidebar .nav-item-children .nav-item:hover::after {
  background: rgba(232, 192, 64, 0.6);
}

/* ---------- Portrait entries — faces in the tree ---------- */
.sidebar .nav-item.has-portrait {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.sidebar .nav-item.has-portrait::before { content: none; } /* drop the fleuron */
/* flat (top-level) portrait entries: no spine, a little more room */
.sidebar .nav-category-items > .nav-item.has-portrait {
  padding: 0.36rem 1rem 0.36rem 1.1rem;
}
.sidebar .nav-item-portrait {
  position: relative;
  z-index: 1;
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  overflow: hidden;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at 50% 35%, rgba(40, 34, 24, 0.9), var(--abyss));
  border: 1px solid rgba(201, 162, 39, 0.35);
  box-shadow: inset 0 0 4px rgba(0, 0, 0, 0.6);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}
.sidebar .nav-item-portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.sidebar .nav-item-monogram {
  font-family: var(--font-display);
  font-size: 0.72rem;
  color: var(--gold-deep);
  text-transform: uppercase;
}
.sidebar .nav-item-label {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.sidebar .nav-item.has-portrait:hover .nav-item-portrait {
  border-color: var(--gold);
  box-shadow: inset 0 0 4px rgba(0, 0, 0, 0.6), 0 0 8px rgba(232, 192, 64, 0.4);
  transform: scale(1.06);
}
.sidebar .nav-item.has-portrait.active .nav-item-portrait {
  border-color: var(--gold-bright);
  box-shadow: inset 0 0 4px rgba(0, 0, 0, 0.6), 0 0 10px rgba(232, 192, 64, 0.6);
}
.sidebar .nav-item.has-portrait.active .nav-item-label {
  color: var(--gold-bright);
}