.nav-label {
  margin: 1rem 0.55rem 0.35rem;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.nav-group > button {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.38rem 0.55rem;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  text-align: left;
}

.nav-group > button:hover {
  background: var(--surface-hover);
  color: var(--text-primary);
}

.nav-group ul {
  margin: 0.1rem 0 0.3rem;
}

.nav-group[data-open="false"] ul {
  display: none;
}

.rail a {
  display: block;
  padding: 0.34rem 0.55rem 0.34rem 0.85rem;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  text-decoration: none;
}

.rail a:hover {
  background: var(--surface-hover);
  color: var(--text-primary);
}

.rail a[aria-current="page"] {
  background: var(--surface-selected);
  color: var(--text-primary);
  box-shadow: inset 2px 0 0 var(--accent-primary);
}

.rail-backdrop {
  display: none;
}