[data-fui-comp="tree"], [data-fui-comp="tree"] .tree__group {
  list-style: none;
  margin: 0;
  padding: 0;
}
[data-fui-comp="tree"] .tree__group { padding-inline-start: var(--spacing-lg, 16px); }
[data-fui-comp="tree"] .tree__group[hidden] { display: none; }
[data-fui-comp="tree"] .tree__item { display: block; }
[data-fui-comp="tree"] .tree__row {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs, 4px);
  min-height: var(--spacing-touch-target, 44px);
  padding: 4px 6px;
  border-radius: var(--radii-sm, 4px);
}
[data-fui-comp="tree"] .tree__item[tabindex="0"] > .tree__row,
[data-fui-comp="tree"] .tree__item:focus-within > .tree__row {
  outline: 2px solid var(--color-primary, #4F46E5);
  outline-offset: -2px;
}
[data-fui-comp="tree"] .tree__item[aria-selected="true"] > .tree__row {
  background: var(--color-muted, #f1f1f3);
  font-weight: 600;
}
[data-fui-comp="tree"] .tree__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  inline-size: 1.5em;
  block-size: 1.5em;
  border: none;
  background: transparent;
  color: var(--color-text-muted, #6b7280);
  font: inherit;
  font-size: 0.75rem;
  cursor: pointer;
  transition: transform var(--duration-fast, 120ms) var(--easing-standard, ease);
}
[data-fui-comp="tree"] .tree__item[aria-expanded="true"] > .tree__row > .tree__toggle {
  transform: rotate(90deg);
}
[data-fui-comp="tree"] .tree__label {
  color: var(--color-text, #111);
  text-decoration: none;
  flex: 1 1 auto;
  min-inline-size: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
[data-fui-comp="tree"] a.tree__label:hover { text-decoration: underline; }