/* ── Tree Nodes ── */

.tree-node {
  --indent: calc(var(--depth, 0) * 20px);
}

.tree-node__row {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  padding-left: calc(var(--indent) + var(--space-2));
  border-radius: var(--radius-sm);
  transition: background var(--duration-fast) var(--ease-out);
}

.tree-node__row:hover {
  background: var(--surface-hover);
}

.tree-node__row--active {
  background: var(--surface-active);
}

.tree-node__toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border: none;
  background: none;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
  transition: transform var(--duration-fast) var(--ease-out);
}

.tree-node__toggle[aria-expanded="true"] .tree-node__arrow {
  transform: rotate(90deg);
}

.tree-node__arrow {
  font-size: 16px;
  transition: transform var(--duration-fast) var(--ease-out);
}

.tree-node__spacer {
  width: 20px;
  flex-shrink: 0;
}

.tree-node__link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex: 1;
  min-width: 0;
  text-decoration: none;
  color: var(--text-primary);
  padding: var(--space-1) 0;
}

.tree-node__badge {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: var(--radius-sm);
  background: var(--surface-sunken);
  color: var(--text-secondary);
  flex-shrink: 0;
}

.tree-node__badge .material-symbols-rounded {
  font-size: 14px;
}

.tree-node__name {
  font-size: var(--text-sm);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tree-node__children {
  /* controlled via hidden attribute and JS */
}