/* Navigation — боковое меню */

.sidebar {
  display: flex;
  flex-direction: column;
  padding: var(--space-md);
  background: linear-gradient(180deg, #8f5520 0%, var(--wood) 50%, var(--wood-dark) 100%);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.sidebar__book {
  width: 48px;
  margin: var(--space-md) auto 0;
  opacity: 0.9;
}

.nav__head {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 2px dashed rgba(212, 168, 67, 0.4);
}

.nav__compass {
  width: 44px;
  height: 44px;
}

.nav__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 400;
  text-align: center;
  color: var(--parchment-card);
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-list__link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.7rem;
  margin-bottom: 0.4rem;
  font-size: 0.84rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--parchment-card);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.12), transparent), #7a4818;
  border: 2px solid var(--wood-dark);
  border-radius: var(--radius-sm);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.nav-list__link:hover {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.2), transparent), #9a6028;
  transform: translateX(4px);
}

.nav-list__link:focus-visible {
  outline: 2px solid var(--gold-light);
  outline-offset: 2px;
}

.nav-list__link.is-active {
  color: var(--ink);
  background: linear-gradient(180deg, var(--gold-light), var(--gold));
  border-color: #8b6914;
}

.nav-list__icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.nav-list__link.is-active .nav-list__icon {
  filter: brightness(0.35);
}

.nav-toggle {
  display: none;
}

.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgba(26, 40, 64, 0.45);
}

.nav-overlay:not([hidden]) {
  display: block;
}

body.is-nav-open {
  overflow: hidden;
}