/* =========================== */
/* CATEGORY TREE COMPONENT */
/* =========================== */

/* CSS Variables (Design System Compatibility) */
:root {
    --tree_primary: #7c3aed;
    --tree_primary_hover: #6b21a8;
    --tree_primary_light: rgba(124, 58, 237, 0.1);
    --tree_bg: #ffffff;
    --tree_bg_hover: #f9fafb;
    --tree_border: #e5e7eb;
    --tree_border_hover: #d1d5db;
    --tree_text_primary: #111827;
    --tree_text_secondary: #6b7280;
    --tree_text_tertiary: #9ca3af;
    --tree_radius_md: 0.375rem;
    --tree_radius_lg: 0.5rem;
    --tree_shadow_sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --tree_transition: 200ms ease;
}

[data-theme="dark"] {
    --tree_bg: #171717;
    --tree_bg_hover: #262626;
    --tree_border: #262626;
    --tree_border_hover: #404040;
    --tree_text_primary: #f5f5f5;
    --tree_text_secondary: #a3a3a3;
    --tree_text_tertiary: #737373;
}

/* Main Container */
.category-tree {
    min-height: auto !important;
    height: auto !important;
    overflow: visible !important;
    background: transparent !important;
    border: none !important;
    padding: 0 !important;
    margin: 0 !important;
}

/* Tree Container */
.tree-container {
    background-color: var(--tree_bg);
    border: 1px solid var(--tree_border);
    border-radius: var(--tree_radius_lg);
    padding: 0.75rem;
    max-height: 600px;
    overflow-y: auto;
    box-shadow: var(--tree_shadow_sm);
}

/* Search Input */
.tree-container input[type="text"] {
    width: 100%;
    height: 40px;
    padding: 0 0.75rem 0 2.5rem;
    margin-bottom: 0.75rem;
    font-family: inherit;
    font-size: 0.875rem;
    line-height: 1;
    color: var(--tree_text_primary);
    background-color: var(--tree_bg);
    border: 1px solid var(--tree_border);
    border-radius: var(--tree_radius_md);
    transition: all var(--tree_transition);
}

.tree-container input[type="text"]:hover {
    border-color: var(--tree_border_hover);
}

.tree-container input[type="text"]:focus {
    outline: none;
    border-color: var(--tree_primary);
    box-shadow: 0 0 0 3px var(--tree_primary_light);
}

.tree-container input[type="text"]::placeholder {
    color: var(--tree_text_tertiary);
}

/* Tree Node */
.tree-node {
    padding: 0.5rem 0.75rem;
    cursor: pointer;
    user-select: none;
    border-radius: var(--tree_radius_md);
    transition: all var(--tree_transition);
    display: flex;
    align-items: center;
    margin-bottom: 2px;
}

.tree-node:hover {
    background-color: var(--tree_bg_hover);
}

.tree-node.has-children {
    font-weight: 500;
}

.tree-node.active {
    background-color: var(--tree_primary_light);
    color: var(--tree_primary);
}

/* Tree Icon */
.tree-icon {
    width: 1.25rem;
    min-width: 1.25rem;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    color: var(--tree_text_tertiary);
    transition: color var(--tree_transition);
}

.tree-node:hover .tree-icon {
    color: var(--tree_text_secondary);
}

.tree-icon .fa-caret-right,
.tree-icon .fa-caret-down {
    font-size: 0.875rem;
    transition: transform var(--tree_transition);
}

.tree-icon .fa-circle {
    font-size: 0.4rem;
}

/* Tree Title */
.tree-title {
    margin-left: 0.5rem;
    font-size: 0.875rem;
    color: var(--tree_text_primary);
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.tree-node:hover .tree-title {
    color: var(--tree_primary);
}

/* Tree Link */
.tree-node a {
    margin-left: 0.5rem;
    color: var(--tree_text_tertiary);
    text-decoration: none;
    transition: color var(--tree_transition);
    display: inline-flex;
    align-items: center;
    padding: 0.25rem;
    border-radius: var(--tree_radius_md);
}

.tree-node a:hover {
    color: var(--tree_primary);
    background-color: var(--tree_primary_light);
}

.tree-node a i {
    font-size: 0.75rem;
}

/* Tree Children */
.tree-children {
    margin-left: 0;
    overflow: hidden;
}

/* Disabled State */
.tree-title[style*="opacity: 0.5"] {
    color: var(--tree_text_tertiary);
}

/* Toggle Animation */
.tree-toggle {
    cursor: pointer;
    transition: transform var(--tree_transition);
}

/* Scrollbar Styling */
.tree-container::-webkit-scrollbar {
    width: 8px;
}

.tree-container::-webkit-scrollbar-track {
    background: var(--tree_bg);
    border-radius: var(--tree_radius_md);
}

.tree-container::-webkit-scrollbar-thumb {
    background: var(--tree_border);
    border-radius: var(--tree_radius_md);
    transition: background var(--tree_transition);
}

.tree-container::-webkit-scrollbar-thumb:hover {
    background: var(--tree_border_hover);
}

/* Focus States */
.tree-node:focus-visible {
    outline: 2px solid var(--tree_primary);
    outline-offset: 2px;
}

/* Loading State */
.tree-container.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Empty State */
.tree-container:empty::after {
    content: "Нет категорий";
    display: block;
    text-align: center;
    padding: 2rem;
    color: var(--tree_text_tertiary);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
    .tree-container {
        max-height: 400px;
    }

    .tree-node {
        padding: 0.625rem 0.5rem;
    }
}