/* WBS Container - Allow horizontal scrolling */
#wbs-container {
    width: 100%;
    overflow-x: auto;
    min-width: 100%;
}

/* WBS Tree Container - Flexible width */
.wbs-tree-container {
    min-width: 100%;
    width: auto;
    padding: 1rem;
    display: block;
}

/* --- FORCE TOP-LEVEL FLEX LAYOUT FOR WBS, OVERRIDING BOOTSTRAP ---
   This ensures top-level WBS cards are always side by side, never stacked,
   even if Bootstrap list-group/list-group-item classes are present. */
ul.wbs-level.top-level {
    display: flex !important;
    flex-wrap: nowrap !important;
    flex-direction: row !important;
    gap: 1.5rem !important;
    list-style: none !important;
    padding: 0 !important;
    margin: 0 !important;
    width: 100% !important;
    overflow-x: auto !important;
    align-items: flex-start !important;
}

ul.wbs-level.top-level > li.wbs-item {
    min-width: 350px !important;
    max-width: 600px !important;
    width: auto !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: stretch !important;
    background-color: #f8f9fa !important;
    border: 1px solid #dee2e6 !important;
    border-radius: 0.375rem !important;
    padding: 1rem !important;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1) !important;
    transition: box-shadow 0.2s ease !important;
    margin-bottom: 0 !important;
    flex-shrink: 0 !important;
}

ul.wbs-level.top-level > li.wbs-item:hover {
    box-shadow: 0 2px 6px rgba(0,0,0,0.15);
}

/* Child levels - Hierarchical indented list format */
.wbs-level:not(.top-level) {
    list-style: none;
    padding: 0;
    margin: 0;
    width: 100%;
}

/* Level 1-3: Compact cards with borders */
.wbs-level.level-1,
.wbs-level.level-2,
.wbs-level.level-3 {
    margin-left: 1.5rem;
    margin-top: 0.75rem;
}

.wbs-level.level-1 .wbs-item,
.wbs-level.level-2 .wbs-item,
.wbs-level.level-3 .wbs-item {
    background-color: #ffffff;
    border: 1px solid #e9ecef;
    border-radius: 0.25rem;
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
    position: relative;
    min-width: 0;
    display: block;
}

.wbs-level.level-1 .wbs-item::before,
.wbs-level.level-2 .wbs-item::before,
.wbs-level.level-3 .wbs-item::before {
    content: '';
    position: absolute;
    left: -1.5rem;
    top: 1rem;
    width: 1rem;
    height: 1px;
    background-color: #dee2e6;
}

/* Level 4+: Simple indented list format */
.wbs-level.level-4,
.wbs-level.level-5,
.wbs-level.level-6,
.wbs-level.level-7,
.wbs-level.level-8,
.wbs-level.level-9,
.wbs-level.level-10 {
    margin-left: 2rem;
    margin-top: 0.5rem;
}

.wbs-level.level-4 .wbs-item,
.wbs-level.level-5 .wbs-item,
.wbs-level.level-6 .wbs-item,
.wbs-level.level-7 .wbs-item,
.wbs-level.level-8 .wbs-item,
.wbs-level.level-9 .wbs-item,
.wbs-level.level-10 .wbs-item {
    background-color: transparent;
    border: none;
    border-left: 2px solid #dee2e6;
    border-radius: 0;
    padding: 0.5rem 0 0.5rem 1rem;
    margin-bottom: 0.25rem;
    box-shadow: none;
    position: relative;
    min-width: 0;
    width: auto;
    max-width: none;
    display: block;
}

/* WBS Item Layout */
.wbs-item {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 0.75rem;
    width: 100%;
    min-width: 0;
}

.wbs-item-content {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex: 1;
    min-width: 0;
    width: 100%;
    white-space: normal;
    word-break: normal;
}

.wbs-item-name {
    font-weight: 600;
    color: #212529;
    word-wrap: break-word;
    hyphens: auto;
    line-height: 1.4;
    white-space: normal;
    word-break: normal;
}

/* Level 4+ items get smaller font and different styling */
.wbs-level.level-4 .wbs-item-name,
.wbs-level.level-5 .wbs-item-name,
.wbs-level.level-6 .wbs-item-name,
.wbs-level.level-7 .wbs-item-name,
.wbs-level.level-8 .wbs-item-name,
.wbs-level.level-9 .wbs-item-name,
.wbs-level.level-10 .wbs-item-name {
    font-weight: 500;
    font-size: 0.95rem;
    color: #495057;
}

.wbs-item-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-shrink: 0;
}

.wbs-item-actions i {
    cursor: pointer;
    font-size: 0.9rem;
    padding: 0.25rem;
    border-radius: 0.25rem;
    transition: background-color 0.2s ease;
}

.wbs-item-actions i:hover {
    background-color: rgba(0,0,0,0.1);
}

/* Level 4+ actions get smaller */
.wbs-level.level-4 .wbs-item-actions i,
.wbs-level.level-5 .wbs-item-actions i,
.wbs-level.level-6 .wbs-item-actions i,
.wbs-level.level-7 .wbs-item-actions i,
.wbs-level.level-8 .wbs-item-actions i,
.wbs-level.level-9 .wbs-item-actions i,
.wbs-level.level-10 .wbs-item-actions i {
    font-size: 0.8rem;
    padding: 0.2rem;
}

/* Override Bootstrap container width for WBS page */
.container.wbs-page {
    max-width: 100%;
    padding-left: 1rem;
    padding-right: 1rem;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .wbs-level.top-level {
        flex-direction: column;
        gap: 1rem;
    }
    
    .wbs-level.level-1,
    .wbs-level.level-2,
    .wbs-level.level-3 {
        margin-left: 1rem;
    }
    
    .wbs-level.level-4,
    .wbs-level.level-5,
    .wbs-level.level-6,
    .wbs-level.level-7,
    .wbs-level.level-8,
    .wbs-level.level-9,
    .wbs-level.level-10 {
        margin-left: 1.5rem;
    }
    
    .wbs-item {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .wbs-item-actions {
        align-self: flex-end;
    }
}

/* Print styles */
@media print {
    #wbs-container {
        overflow-x: visible;
    }
    
    .wbs-tree-container {
        width: 100%;
    }
    
    .wbs-item-actions {
        display: none;
    }
}

/* WBS Visualization Styles */
#wbs-visualization {
    width: 100%;
    height: 600px;
    border: 1px solid #dee2e6;
    border-radius: 0.375rem;
    background-color: #f8f9fa;
    position: relative;
    overflow: hidden;
}

#wbs-visualization svg {
    width: 100%;
    height: 100%;
}

.wbs-node {
    cursor: pointer;
    transition: all 0.2s ease;
}

.wbs-node:hover {
    opacity: 0.8;
}

.wbs-node circle {
    fill: #007bff;
    stroke: #0056b3;
    stroke-width: 2px;
}

.wbs-node .parent-node {
    fill: #28a745;
    stroke: #1e7e34;
    stroke-width: 2px;
}

.wbs-node .leaf-node {
    fill: #007bff;
    stroke: #0056b3;
    stroke-width: 2px;
}

.wbs-node text {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 12px;
    fill: #333;
}

.wbs-link {
    fill: none;
    stroke: #6c757d;
    stroke-width: 2px;
}

.wbs-node-label {
    font-size: 11px;
    font-weight: bold;
    fill: #007bff;
}

.wbs-code {
    font-size: 10px;
    fill: #6c757d;
    font-style: italic;
}

/* Loading animation */
.wbs-loading {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 200px;
}

.wbs-loading::after {
    content: '';
    width: 20px;
    height: 20px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #007bff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Tooltip styles */
.wbs-tooltip {
    position: absolute;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 12px;
    pointer-events: none;
    z-index: 1000;
    max-width: 200px;
    word-wrap: break-word;
}

/* Tab Styles */
.btn-check:checked + .btn-outline-primary {
    background-color: #007bff;
    border-color: #007bff;
    color: white;
}

/* Export Button Styles */
#export-buttons .dropdown-item {
    cursor: pointer;
}

#export-buttons .dropdown-item:hover {
    background-color: #f8f9fa;
}

/* Print Styles for Export */
@media print {
    #wbs-visualization {
        border: none;
        background-color: white;
    }
    
    .wbs-node circle {
        fill: #000 !important;
        stroke: #000 !important;
    }
    
    .wbs-node text {
        fill: #000 !important;
    }
    
    .wbs-link {
        stroke: #000 !important;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    #wbs-visualization {
        height: 400px;
    }
    
    .btn-group {
        flex-direction: column;
    }
    
    .btn-group .btn {
        margin-bottom: 0.25rem;
    }
}

/* --- WBS Modal Tag Select Visual Feedback --- */
#wbsTags option:checked {
    background-color: #007bff !important;
    color: #fff !important;
    font-weight: bold;
}