/* Folder Sidebar Styles */
.main-layout {
    display: flex;
    gap: 0;
    width: 100%;
    min-height: calc(100vh - 120px);
}

.folder-sidebar {
    width: 280px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-base);
    overflow: hidden;
    transition: all 0.3s ease;
    flex-shrink: 0;
    height: fit-content;
    max-height: calc(100vh - 140px);
    position: sticky;
    top: 20px;
}

.folder-sidebar.collapsed {
    width: 0;
    border: none;
    opacity: 0;
    pointer-events: none;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--lora-accent);
    color: white;
    font-weight: 600;
    font-size: 0.9em;
}

.sidebar-header h3 {
    margin: 0;
    font-size: 0.9em;
    display: flex;
    align-items: center;
    gap: 8px;
}

.sidebar-close-btn {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    opacity: 0.8;
    transition: opacity 0.2s ease;
}

.sidebar-close-btn:hover {
    opacity: 1;
    background: rgba(255, 255, 255, 0.1);
}

.sidebar-content {
    height: calc(100% - 45px);
    overflow: hidden;
}

.folder-tree-container {
    height: 100%;
    max-height: calc(100vh - 185px);
    overflow-y: auto;
    padding: 8px 0;
}

/* Tree Node Styles */
.sidebar-tree-node {
    position: relative;
    user-select: none;
}

.sidebar-tree-node-content {
    display: flex;
    align-items: center;
    padding: 6px 16px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.85em;
    border-left: 3px solid transparent;
}

.sidebar-tree-node-content:hover {
    background: var(--lora-accent);
    color: white;
}

.sidebar-tree-node-content.selected {
    background: var(--lora-accent);
    color: white;
    border-left-color: oklch(var(--lora-accent-l) var(--lora-accent-c) var(--lora-accent-h) / 0.8);
    font-weight: 500;
}

.sidebar-tree-expand-icon {
    width: 16px;
    height: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 4px;
    transition: transform 0.2s ease;
    opacity: 0.6;
}

.sidebar-tree-expand-icon.expanded {
    transform: rotate(90deg);
}

.sidebar-tree-expand-icon i {
    font-size: 10px;
}

.sidebar-tree-folder-icon {
    margin-right: 8px;
    color: var(--lora-accent);
    opacity: 0.8;
}

.sidebar-tree-node-content.selected .sidebar-tree-folder-icon {
    color: white;
    opacity: 1;
}

.sidebar-tree-folder-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.sidebar-tree-children {
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.3s ease;
}

.sidebar-tree-children.expanded {
    max-height: 1000px;
}

.sidebar-tree-children .sidebar-tree-node-content {
    padding-left: 32px;
}

.sidebar-tree-children .sidebar-tree-children .sidebar-tree-node-content {
    padding-left: 48px;
}

.sidebar-tree-children .sidebar-tree-children .sidebar-tree-children .sidebar-tree-node-content {
    padding-left: 64px;
}

/* Breadcrumb Styles */
.breadcrumb-container {
    margin-top: 8px;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
    background: var(--card-bg);
    border-radius: var(--border-radius-xs);
}

.breadcrumb-nav {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 4px;
    font-size: 0.85em;
    padding: 0 8px;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    border-radius: var(--border-radius-xs);
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-muted);
}

.breadcrumb-item:hover {
    background: var(--lora-accent);
    color: white;
}

.breadcrumb-item.active {
    background: var(--lora-accent);
    color: white;
    font-weight: 500;
}

.breadcrumb-separator {
    color: var(--text-muted);
    opacity: 0.6;
    margin: 0 2px;
}

/* Content Area */
.content-area {
    flex: 1;
    min-width: 0;
    margin-left: 16px;
}

/* Sidebar Toggle Button */
.sidebar-toggle-container {
    margin-left: auto;
}

.sidebar-toggle-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.sidebar-toggle-btn:hover {
    background: var(--lora-accent);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.1);
}

.sidebar-toggle-btn.active {
    background: var(--lora-accent);
    color: white;
}

/* Empty State */
.sidebar-tree-placeholder {
    padding: 24px 16px;
    text-align: center;
    color: var(--text-muted);
    opacity: 0.7;
}

.sidebar-tree-placeholder i {
    font-size: 2em;
    opacity: 0.5;
    margin-bottom: 8px;
    display: block;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .folder-sidebar {
        position: fixed;
        top: 68px;
        left: 16px;
        z-index: 1000;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        max-height: calc(100vh - 88px);
    }
    
    .folder-sidebar.collapsed {
        left: -300px;
    }
    
    .content-area {
        margin-left: 0;
    }
    
    .main-layout {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .folder-sidebar {
        width: calc(100vw - 32px);
        left: 16px;
        right: 16px;
    }
    
    .breadcrumb-nav {
        font-size: 0.8em;
    }
    
    .breadcrumb-item {
        padding: 3px 6px;
    }
}

/* Hide scrollbar but keep functionality */
.folder-tree-container::-webkit-scrollbar {
    width: 6px;
}

.folder-tree-container::-webkit-scrollbar-track {
    background: transparent;
}

.folder-tree-container::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

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