/* Category Tree Styles */

.category-tree {
    max-height: calc(100vh - 400px);
    overflow-y: auto;
}

.tree-node {
    user-select: none;
}

.tree-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm);
    border-radius: 4px;
    cursor: pointer;
}

.tree-header:hover {
    background: var(--bg-hover);
}

.expand-icon {
    width: 16px;
    text-align: center;
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    transition: transform 0.2s;
}

.tree-node.expanded > .tree-header .expand-icon {
    transform: rotate(45deg);
}

.cat-checkbox {
    accent-color: var(--accent);
}

.cat-icon {
    width: 20px;
    text-align: center;
    font-size: var(--font-size-sm);
}

.cat-name {
    flex: 1;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
}

.cat-count {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.tree-children {
    margin-left: 32px;
    border-left: 1px solid var(--border);
    padding-left: var(--space-sm);
}

.tree-children.hidden {
    display: none;
}

.tree-child {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) var(--space-sm);
    border-radius: 4px;
    cursor: pointer;
}

.tree-child:hover {
    background: var(--bg-hover);
}

.tree-child .cat-name {
    font-size: var(--font-size-sm);
}

/* Selected state */
.tree-node.selected > .tree-header,
.tree-child.selected {
    background: var(--accent-muted);
}

.tree-node.selected > .tree-header .cat-name,
.tree-child.selected .cat-name {
    color: white;
}

/* Indeterminate checkbox (some children selected) */
.tree-header input[type="checkbox"]:indeterminate {
    opacity: 0.6;
}

/* Subcategory nodes */
.tree-child-node {
    margin-bottom: 2px;
}

.expand-icon.sub {
    width: 14px;
    font-size: 10px;
    color: var(--text-muted);
}

/* Adapter list under subcategories */
.adapter-list {
    margin-left: 24px;
    padding: var(--space-xs) 0;
    border-left: 1px dashed var(--border);
    padding-left: var(--space-sm);
}

.adapter-list.hidden {
    display: none;
}

.adapter-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 2px var(--space-xs);
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.adapter-item:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
    border-radius: 3px;
}

.adapter-icon {
    font-size: 10px;
    color: var(--accent);
}

.adapter-name {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 150px;
}