/*
 * ===================================
 * UTKTreeView.uss
 * Unity TreeView 래핑 스타일
 * ===================================
 */

/* ===================================
   Base Container
   =================================== */

.utk-treeview {
    flex-grow: 1;
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-s);
    border-width: var(--border-width);
    border-color: var(--color-border);
}

/* ===================================
   Tree Items
   =================================== */

.utk-treeview .unity-tree-view__item {
    padding: var(--space-xs) 0;
    background-color: transparent;
    transition-duration: var(--anim-fast);
    transition-property: background-color;
}

.utk-treeview .unity-tree-view__item:hover {
    background-color: var(--color-btn-hover);
}

.utk-treeview .unity-tree-view__item--selected {
    background-color: var(--color-btn-primary);
}

.utk-treeview .unity-tree-view__item--selected:hover {
    background-color: var(--color-btn-primary-hover);
}

/* ===================================
   Toggle (Expand/Collapse)
   =================================== */

.utk-treeview .unity-tree-view__item-toggle {
    width: 16px;
    height: 16px;
    margin-right: var(--space-xs);
    -unity-background-image-tint-color: var(--color-text-secondary);
    transition-duration: var(--anim-fast);
    transition-property: rotate;
}

.utk-treeview .unity-tree-view__item-toggle:checked {
    rotate: 90deg;
}

.utk-treeview .unity-tree-view__item--selected .unity-tree-view__item-toggle {
    -unity-background-image-tint-color: var(--color-text-on-primary);
}

/* ===================================
   Indentation
   =================================== */

.utk-treeview .unity-tree-view__item-indents-container {
    flex-direction: row;
}

.utk-treeview .unity-tree-view__item-indent {
    width: 16px;
}

/* ===================================
   Item Content
   =================================== */

.utk-treeview .unity-tree-view__item-content {
    flex-direction: row;
    align-items: center;
    padding-right: var(--space-m);
}

.utk-treeview .unity-tree-view__item-content > .unity-label {
    font-size: var(--font-size-body2);
    color: var(--color-text-primary);
}

.utk-treeview .unity-tree-view__item--selected .unity-tree-view__item-content > .unity-label {
    color: var(--color-text-on-primary);
}

/* ===================================
   Scrollbar
   =================================== */

.utk-treeview .unity-scroller--vertical {
    width: 8px;
}

.utk-treeview .unity-scroller--vertical > .unity-scroller__low-button,
.utk-treeview .unity-scroller--vertical > .unity-scroller__high-button {
    display: none;
}

.utk-treeview .unity-scroller--vertical .unity-base-slider__tracker {
    background-color: transparent;
    border-width: 0;
}

.utk-treeview .unity-scroller--vertical .unity-base-slider__dragger {
    width: 6px;
    border-radius: 3px;
    background-color: var(--color-text-disabled);
    border-width: 0;
}

.utk-treeview .unity-scroller--vertical .unity-base-slider__dragger:hover {
    background-color: var(--color-text-secondary);
}