/* =================================================================
   WORKSPACE TREE NAVIGATION STYLES
   Collapsible tree for workspace/project navigation in sidebar.
   Uses CSS variables from theme-variables.css for theme support.
   ================================================================= */

/* Tree Container */
.workspace-tree {
    padding: 0;
    margin: 0;
    list-style: none;
    font-size: 0.875rem;
}

/* Header Row with Add Button */
.workspace-tree-header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 1rem;
    margin-bottom: 0.25rem;
}

.workspace-tree-header-row .workspace-tree-header {
    padding: 0;
    margin-bottom: 0;
}

.workspace-tree-header {
    color: var(--text-on-brand-muted);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.5rem 1rem;
    margin-bottom: 0.25rem;
    opacity: 0.8;
}

/* Add Workspace Button */
.workspace-tree-add-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.25rem;
    height: 1.25rem;
    padding: 0;
    border: none;
    border-radius: 0.25rem;
    background-color: transparent;
    color: var(--text-on-brand-muted);
    cursor: pointer;
    transition: all 0.15s ease;
    opacity: 0.7;
}

.workspace-tree-add-btn:hover {
    background-color: var(--surface-overlay);
    color: var(--text-on-brand);
    opacity: 1;
}

.workspace-tree-add-btn:active {
    transform: scale(0.95);
}

.workspace-tree-add-btn i {
    font-size: 0.65rem;
}

/* Tree Items */
.workspace-tree-item {
    position: relative;
}

.workspace-tree-link {
    display: flex;
    align-items: center;
    padding: 0.5rem 1rem;
    color: var(--text-on-brand-muted);
    text-decoration: none;
    border-radius: 0.375rem;
    margin: 0.125rem 0.5rem;
    transition: all 0.2s ease;
    cursor: pointer;
    gap: 0.5rem;
}

.workspace-tree-link:hover {
    color: var(--text-on-brand);
    background-color: var(--surface-overlay);
}

.workspace-tree-link.active {
    color: var(--text-on-brand);
    background-color: var(--surface-overlay);
}

/* Expand/Collapse Toggle */
.workspace-tree-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1rem;
    height: 1rem;
    flex-shrink: 0;
    font-size: 0.65rem;
    opacity: 0.7;
    transition: transform 0.2s ease;
    cursor: pointer;
}

.workspace-tree-toggle:hover {
    opacity: 1;
}

.workspace-tree-toggle.expanded {
    transform: rotate(90deg);
}

.workspace-tree-toggle.empty {
    visibility: hidden;
}

/* Tree Node Name */
.workspace-tree-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Memory Count Badge */
.workspace-tree-count {
    font-size: 0.7rem;
    background-color: rgba(255, 255, 255, 0.2);
    color: var(--text-on-brand-muted);
    padding: 0.125rem 0.375rem;
    border-radius: 0.75rem;
    min-width: 1.25rem;
    text-align: center;
    flex-shrink: 0;
}

/* Project Status Indicator */
.workspace-tree-status {
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
    flex-shrink: 0;
}

.workspace-tree-status.draft {
    background-color: #6c757d;
}

.workspace-tree-status.active {
    background-color: #28a745;
}

.workspace-tree-status.on_hold,
.workspace-tree-status.onhold {
    background-color: #ffc107;
}

.workspace-tree-status.completed {
    background-color: #17a2b8;
}

.workspace-tree-status.cancelled {
    background-color: #dc3545;
}

.workspace-tree-status.archived {
    background-color: #6c757d;
    opacity: 0.5;
}

/* Nested Items */
.workspace-tree-children {
    padding-left: 1rem;
    margin: 0;
    list-style: none;
    display: none;
}

.workspace-tree-children.expanded {
    display: block;
}

/* Nesting Level Indicators - cap at level 2 to prevent excessive indentation */
.workspace-tree-item[data-level="1"] > .workspace-tree-link {
    padding-left: 1.5rem;
}

.workspace-tree-item[data-level="2"] > .workspace-tree-link,
.workspace-tree-item[data-level="3"] > .workspace-tree-link,
.workspace-tree-item[data-level="4"] > .workspace-tree-link,
.workspace-tree-item[data-level="5"] > .workspace-tree-link {
    padding-left: 2.25rem;
}

/* Visual indicator for deeply nested items (level 3+) */
.workspace-tree-item[data-level="3"] > .workspace-tree-link,
.workspace-tree-item[data-level="4"] > .workspace-tree-link,
.workspace-tree-item[data-level="5"] > .workspace-tree-link {
    border-left: 2px solid rgba(255, 255, 255, 0.15);
    margin-left: 0.5rem;
    border-radius: 0;
}

.workspace-tree-item[data-level="3"] > .workspace-tree-link:hover,
.workspace-tree-item[data-level="4"] > .workspace-tree-link:hover,
.workspace-tree-item[data-level="5"] > .workspace-tree-link:hover {
    border-left-color: rgba(255, 255, 255, 0.3);
}

/* Compact mode for level 2+ - reduce visual clutter to show more of the name */
.workspace-tree-item[data-level="2"] > .workspace-tree-link,
.workspace-tree-item[data-level="3"] > .workspace-tree-link,
.workspace-tree-item[data-level="4"] > .workspace-tree-link,
.workspace-tree-item[data-level="5"] > .workspace-tree-link {
    gap: 0.25rem;
    font-size: 0.8rem;
    padding-top: 0.375rem;
    padding-bottom: 0.375rem;
}

/* Hide count badge at level 2+, show on hover */
.workspace-tree-item[data-level="2"] > .workspace-tree-link > .workspace-tree-count,
.workspace-tree-item[data-level="3"] > .workspace-tree-link > .workspace-tree-count,
.workspace-tree-item[data-level="4"] > .workspace-tree-link > .workspace-tree-count,
.workspace-tree-item[data-level="5"] > .workspace-tree-link > .workspace-tree-count {
    display: none;
}

.workspace-tree-item[data-level="2"] > .workspace-tree-link:hover > .workspace-tree-count,
.workspace-tree-item[data-level="3"] > .workspace-tree-link:hover > .workspace-tree-count,
.workspace-tree-item[data-level="4"] > .workspace-tree-link:hover > .workspace-tree-count,
.workspace-tree-item[data-level="5"] > .workspace-tree-link:hover > .workspace-tree-count {
    display: inline-block;
}

/* Smaller toggle and icon at level 2+ */
.workspace-tree-item[data-level="2"] > .workspace-tree-link > .workspace-tree-toggle,
.workspace-tree-item[data-level="3"] > .workspace-tree-link > .workspace-tree-toggle,
.workspace-tree-item[data-level="4"] > .workspace-tree-link > .workspace-tree-toggle,
.workspace-tree-item[data-level="5"] > .workspace-tree-link > .workspace-tree-toggle {
    width: 0.75rem;
    font-size: 0.55rem;
}

.workspace-tree-item[data-level="2"] > .workspace-tree-link > .workspace-tree-icon,
.workspace-tree-item[data-level="3"] > .workspace-tree-link > .workspace-tree-icon,
.workspace-tree-item[data-level="4"] > .workspace-tree-link > .workspace-tree-icon,
.workspace-tree-item[data-level="5"] > .workspace-tree-link > .workspace-tree-icon {
    width: 0.875rem;
    font-size: 0.75rem;
}

/* Divider */
.workspace-tree-divider {
    border-top: 1px solid var(--sidebar-divider);
    margin: 0.75rem 1rem;
}

/* Unfiled Section */
.workspace-tree-unfiled {
    display: flex;
    align-items: center;
    padding: 0.5rem 1rem;
    color: var(--text-on-brand-muted);
    text-decoration: none;
    border-radius: 0.375rem;
    margin: 0.125rem 0.5rem;
    transition: all 0.2s ease;
    cursor: pointer;
    gap: 0.5rem;
}

.workspace-tree-unfiled:hover {
    color: var(--text-on-brand);
    background-color: var(--surface-overlay);
}

.workspace-tree-unfiled.active {
    color: var(--text-on-brand);
    background-color: var(--surface-overlay);
}

.workspace-tree-unfiled .fa-inbox {
    opacity: 0.7;
}

/* Empty State */
.workspace-tree-empty {
    color: var(--text-on-brand-muted);
    font-size: 0.8rem;
    padding: 0.5rem 1rem;
    font-style: italic;
    opacity: 0.7;
}

/* Loading State */
.workspace-tree-loading {
    color: var(--text-on-brand-muted);
    font-size: 0.8rem;
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.workspace-tree-loading .spinner-border {
    width: 0.875rem;
    height: 0.875rem;
    border-width: 0.125rem;
}

/* Error State */
.workspace-tree-error {
    color: #f8d7da;
    font-size: 0.8rem;
    padding: 0.5rem 1rem;
}

/* Icon styling */
.workspace-tree-icon {
    width: 1rem;
    text-align: center;
    opacity: 0.7;
    flex-shrink: 0;
}

/* Workspace vs Project Icon Differentiation */
.workspace-tree-workspace .workspace-tree-icon {
    color: var(--text-on-brand);
}

.workspace-tree-project .workspace-tree-icon {
    color: var(--text-on-brand-muted);
}

/* Collapsed state styling */
.workspace-tree-item.collapsed > .workspace-tree-children {
    display: none;
}

/* Smooth transition for expand/collapse */
.workspace-tree-children {
    transition: max-height 0.2s ease-out;
    overflow: hidden;
}

/* Dark Mode Adjustments (if needed beyond CSS variables) */
[data-theme="dark"] .workspace-tree-count {
    background-color: rgba(255, 255, 255, 0.15);
}

[data-theme="dark"] .workspace-tree-status.draft {
    background-color: #9ca3af;
}

[data-theme="dark"] .workspace-tree-status.active {
    background-color: #34d399;
}

[data-theme="dark"] .workspace-tree-status.on_hold,
[data-theme="dark"] .workspace-tree-status.onhold {
    background-color: #fbbf24;
}

[data-theme="dark"] .workspace-tree-status.completed {
    background-color: #38bdf8;
}

[data-theme="dark"] .workspace-tree-status.cancelled {
    background-color: #f87171;
}

/* =================================================================
   SCOPED VIEW NAVIGATION (for focus mode)
   ================================================================= */

/* Scope header with back button */
.workspace-tree-scope-header {
    display: flex;
    align-items: center;
    padding: 0.5rem 0.75rem;
    background-color: rgba(0, 0, 0, 0.15);
    border-bottom: 1px solid var(--sidebar-divider);
}

.workspace-tree-scope-back {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    color: var(--text-on-brand);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0.375rem 0.625rem;
    border-radius: 0.375rem;
    transition: all 0.15s ease;
    background-color: rgba(255, 255, 255, 0.1);
}

.workspace-tree-scope-back:hover {
    background-color: rgba(255, 255, 255, 0.2);
    color: var(--text-on-brand);
}

.workspace-tree-scope-back i {
    font-size: 0.7rem;
}

/* Breadcrumb trail (shown below the back button when there are ancestors) */
.workspace-tree-breadcrumbs {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    padding: 0.375rem 1rem;
    gap: 0.25rem;
    font-size: 0.7rem;
    color: var(--text-on-brand-muted);
    background-color: rgba(0, 0, 0, 0.05);
}

.workspace-tree-breadcrumb-item {
    color: var(--text-on-brand-muted);
    text-decoration: none;
    padding: 0.125rem 0.25rem;
    border-radius: 0.25rem;
    transition: all 0.15s ease;
    white-space: nowrap;
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
}

.workspace-tree-breadcrumb-item:hover {
    color: var(--text-on-brand);
    background-color: var(--surface-overlay);
}

.workspace-tree-breadcrumb-sep {
    color: var(--text-on-brand-muted);
    opacity: 0.5;
    font-size: 0.55rem;
    flex-shrink: 0;
}

/* Dark Mode Scoped View Adjustments */
[data-theme="dark"] .workspace-tree-scope-header {
    background-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .workspace-tree-scope-back {
    background-color: rgba(255, 255, 255, 0.12);
}

[data-theme="dark"] .workspace-tree-scope-back:hover {
    background-color: rgba(255, 255, 255, 0.18);
}

[data-theme="dark"] .workspace-tree-breadcrumbs {
    background-color: rgba(255, 255, 255, 0.03);
}