* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    text-align: center;
    color: white;
    margin-bottom: 30px;
}

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.upload-section {
    background: white;
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.upload-area {
    border: 3px dashed #667eea;
    border-radius: 10px;
    padding: 40px;
    text-align: center;
    background: #f8f9ff;
    transition: all 0.3s ease;
    cursor: pointer;
}

.upload-area:hover {
    border-color: #764ba2;
    background: #f0f2ff;
}

.upload-area.dragover {
    border-color: #4CAF50;
    background: #f0fff0;
}

.upload-icon {
    font-size: 3rem;
    color: #667eea;
    margin-bottom: 15px;
}

.upload-text {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #666;
}

.file-input {
    display: none;
}

.upload-btn {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    font-size: 1rem;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.upload-btn:hover {
    transform: translateY(-2px);
}

.results {
    display: none;
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.tabs {
    display: flex;
    background: #f8f9fa;
    border-bottom: 2px solid #e9ecef;
}

.tab {
    flex: 1;
    padding: 15px 20px;
    background: none;
    border: none;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border-bottom: 3px solid transparent;
}

.tab:hover {
    background: #e9ecef;
}

.tab.active {
    background: white;
    border-bottom-color: #667eea;
    color: #667eea;
    font-weight: bold;
}

.tab-content {
    padding: 30px;
    min-height: 400px;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.stat-value {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

.project-info {
    background: #f8f9ff;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    border-left: 4px solid #667eea;
}

.activities-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.activities-table th,
.activities-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

.activities-table th {
    background: #f8f9fa;
    font-weight: bold;
    color: #666;
}

.activities-table tr:hover {
    background: #f8f9ff;
}

.status-badge {
    padding: 4px 8px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: bold;
    text-transform: uppercase;
}

.status-not-started {
    background: #ffeaa7;
    color: #d63031;
}

.status-active {
    background: #81ecec;
    color: #00b894;
}

.status-complete {
    background: #a29bfe;
    color: #6c5ce7;
}

.filters {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    align-items: center;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.filter-group label {
    font-size: 0.9rem;
    font-weight: bold;
    color: #666;
}

.filter-group select,
.filter-group input {
    padding: 8px 12px;
    border: 2px solid #e9ecef;
    border-radius: 5px;
    font-size: 0.9rem;
}

.loading {
    text-align: center;
    padding: 40px;
    color: #667eea;
}

.loading-spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 15px;
}

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

.error {
    background: #ffe6e6;
    color: #d63031;
    padding: 20px;
    border-radius: 10px;
    border-left: 4px solid #d63031;
    margin: 20px 0;
}

.success {
    background: #e6ffe6;
    color: #00b894;
    padding: 20px;
    border-radius: 10px;
    border-left: 4px solid #00b894;
    margin: 20px 0;
}

.export-section {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    margin-top: 20px;
}

.export-section h4 {
    color: #333;
    margin: 15px 0 10px 0;
    border-bottom: 2px solid #667eea;
    padding-bottom: 5px;
}

.export-section h4:first-of-type {
    margin-top: 0;
}

.export-btn {
    background: #28a745;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    margin-right: 10px;
    margin-bottom: 10px;
    transition: all 0.3s ease;
}

.export-btn:hover {
    background: #218838;
    transform: translateY(-1px);
}

.export-btn:disabled {
    background: #6c757d;
    cursor: not-allowed;
    transform: none;
}

.critical-activity {
    background: #ffe6e6 !important;
}

.resource-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.resource-card {
    background: #f8f9ff;
    padding: 15px;
    border-radius: 8px;
    border-left: 4px solid #667eea;
}

.resource-name {
    font-weight: bold;
    margin-bottom: 5px;
}

.resource-type {
    color: #666;
    font-size: 0.9rem;
}

.assignments-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.assignments-table th,
.assignments-table td {
    padding: 10px;
    text-align: left;
    border-bottom: 1px solid #ddd;
    font-size: 0.9rem;
}

.assignments-table th {
    background: #f8f9fa;
    font-weight: bold;
    color: #666;
}

.assignments-table tr:hover {
    background: #f8f9ff;
}

.curve-chart {
    background: white;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    padding: 20px;
    margin-top: 20px;
    min-height: 400px;
    display: flex;
    flex-direction: column;
    gap: 4ex;
}

.chart-container {
    position: relative;
    height: 400px;
    margin-bottom: 20px;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    padding: 20px;
    background: white;
}

.chart-canvas {
    position: relative;
    width: 100%;
    height: 350px;
    background: #fafafa;
    border-radius: 5px;
    overflow: hidden;
}

.chart-axis {
    position: absolute;
    color: #666;
    font-size: 0.8rem;
}

.chart-axis.x-axis {
    bottom: -20px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    padding: 0 30px;
}

.chart-axis.y-axis {
    left: -25px;
    top: 0;
    bottom: 20px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    text-align: right;
    padding: 10px 0;
}

.chart-line {
    position: absolute;
    pointer-events: none;
}

.chart-line.target-line {
    border-top: 3px solid #667eea;
    z-index: 2;
}

.chart-line.actual-line {
    border-top: 3px solid #dc3545;
    z-index: 3;
}

.chart-point {
    position: absolute;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 4;
    transition: all 0.3s ease;
}

.chart-point:hover {
    transform: scale(1.5);
}

.chart-point.target-point {
    background: #667eea;
    border: 2px solid white;
}

.chart-point.actual-point {
    background: #dc3545;
    border: 2px solid white;
}

.chart-bars-time {
    position: absolute;
    bottom: 20px;
    left: 30px;
    right: 30px;
    height: 320px;
    display: flex;
    align-items: end;
    gap: 2px;
}

.time-bar {
    flex: 1;
    min-height: 2px;
    border-radius: 2px 2px 0 0;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.time-bar:hover {
    opacity: 0.8;
}

.time-bar.target-bar {
    background: linear-gradient(180deg, #667eea, #764ba2);
    margin-right: 1px;
}

.time-bar.actual-bar {
    background: linear-gradient(180deg, #dc3545, #fd7e14);
}

.chart-grid {
    position: absolute;
    top: 20px;
    left: 30px;
    right: 30px;
    bottom: 20px;
    pointer-events: none;
}

.grid-line {
    position: absolute;
    border-top: 1px solid #e9ecef;
    width: 100%;
}

.chart-tooltip {
    position: absolute;
    background: rgba(0, 0, 0, 0.9);
    color: white;
    padding: 10px 12px;
    border-radius: 5px;
    font-size: 0.8rem;
    pointer-events: none;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s;
    max-width: 250px;
    line-height: 1.4;
}

.chart-bars {
    display: flex;
    align-items: end;
    height: 300px;
    gap: 5px;
    padding: 20px 0;
}

.chart-bar {
    flex: 1;
    background: linear-gradient(180deg, #667eea, #764ba2);
    border-radius: 3px 3px 0 0;
    min-height: 5px;
    position: relative;
    cursor: pointer;
    transition: all 0.3s ease;
}

.chart-bar:hover {
    opacity: 0.8;
    transform: translateY(-2px);
}

.chart-bar.cost-bar {
    background: linear-gradient(180deg, #28a745, #20c997);
}

.chart-bar.actual-bar {
    background: linear-gradient(180deg, #dc3545, #fd7e14);
}

.chart-legend {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 10px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.9rem;
}

.legend-color {
    width: 16px;
    height: 16px;
    border-radius: 3px;
}

.utilization-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.utilization-card {
    background: #f8f9ff;
    padding: 15px;
    border-radius: 8px;
    border-left: 4px solid #667eea;
}

.utilization-header {
    font-weight: bold;
    margin-bottom: 10px;
    color: #333;
}

.utilization-metrics {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    font-size: 0.9rem;
}

.metric-label {
    color: #666;
}

.metric-value {
    font-weight: bold;
    color: #333;
}

.assignment-detail {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    margin: 10px 0;
    border-left: 3px solid #667eea;
}

.no-data {
    text-align: center;
    padding: 40px;
    color: #666;
    font-style: italic;
}

.integrity-actions {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    margin: 20px 0;
    text-align: center;
}

.integrity-results {
    margin-top: 20px;
}

.dcma-point {
    background: white;
    border-radius: 10px;
    margin: 15px 0;
    padding: 20px;
    border-left: 5px solid #ddd;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.dcma-point.pass {
    border-left-color: #28a745;
    background: #f8fff9;
}

.dcma-point.fail {
    border-left-color: #dc3545;
    background: #fff8f8;
}

.dcma-point.warning {
    border-left-color: #ffc107;
    background: #fffdf5;
}

.dcma-point h4 {
    margin: 0 0 10px 0;
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.dcma-point h4:hover {
    color: #667eea;
}

.dcma-expand-icon {
    margin-left: auto;
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.dcma-expand-icon.expanded {
    transform: rotate(180deg);
}

.dcma-summary {
    margin-bottom: 15px;
}

.dcma-expandable {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease;
}

.dcma-expandable.expanded {
    max-height: 2000px;
}

.dcma-expandable-content {
    padding-top: 15px;
    border-top: 2px solid rgba(102, 126, 234, 0.1);
    margin-top: 15px;
}

.dcma-status {
    font-size: 1.2rem;
    font-weight: bold;
}

.dcma-status.pass {
    color: #28a745;
}

.dcma-status.fail {
    color: #dc3545;
}

.dcma-status.warning {
    color: #fd7e14;
}

.dcma-details {
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid #eee;
}

.dcma-metric {
    display: inline-block;
    margin-right: 20px;
    margin-bottom: 5px;
}

.dcma-metric strong {
    color: #333;
}

.integrity-summary {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    text-align: center;
}

.summary-score {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 10px;
}

.summary-grade {
    font-size: 1.5rem;
    margin-bottom: 5px;
}

.summary-breakdown {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 15px;
    flex-wrap: wrap;
}

.breakdown-item {
    text-align: center;
}

.breakdown-count {
    font-size: 1.5rem;
    font-weight: bold;
}

.breakdown-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

.dcma-recommendations {
    background: #f0f8ff;
    padding: 15px;
    border-radius: 8px;
    border-left: 4px solid #667eea;
    margin: 15px 0;
}

.dcma-recommendations h5 {
    margin: 0 0 10px 0;
    color: #333;
}

.dcma-recommendations ul {
    margin: 10px 0 0 20px;
    padding: 0;
}

.dcma-recommendations li {
    margin-bottom: 8px;
    line-height: 1.4;
}

.dcma-impact {
    padding: 15px;
    border-radius: 8px;
    margin: 15px 0;
}

.dcma-impact.high-impact {
    background: #fff0f0;
    border-left: 4px solid #dc3545;
}

.dcma-impact.medium-impact {
    background: #fffaf0;
    border-left: 4px solid #ffc107;
}

.dcma-impact h5 {
    margin: 0 0 10px 0;
    color: #333;
}

.dcma-details h5 {
    margin: 15px 0 10px 0;
    color: #333;
    font-size: 1rem;
}

.failed-items-section {
    background: #fff8f0;
    border: 2px solid #ffc107;
    border-radius: 8px;
    padding: 15px;
    margin: 15px 0;
    display: block;
    position: relative;
    z-index: 1;
    max-height: 500px;
    overflow-y: auto;
}

.failed-items-section h5 {
    margin: 0 0 15px 0;
    color: #856404;
}

.failed-items-table {
    margin-bottom: 20px;
    display: block;
    width: 100%;
}

.failed-items-table h6 {
    margin: 0 0 10px 0;
    color: #495057;
    font-size: 0.95rem;
    font-weight: bold;
    display: block;
}

.table-container {
    overflow-x: auto;
    border-radius: 6px;
    border: 1px solid #dee2e6;
    display: block;
    width: 100%;
    margin: 10px 0;
}

.integrity-items-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
    background: white;
    display: table;
    table-layout: auto;
}

.integrity-items-table th {
    background: #f8f9fa;
    padding: 8px 12px;
    text-align: left;
    font-weight: bold;
    color: #495057;
    border-bottom: 2px solid #dee2e6;
    white-space: nowrap;
}

.integrity-items-table td {
    padding: 8px 12px;
    border-bottom: 1px solid #dee2e6;
    vertical-align: top;
    word-wrap: break-word;
    max-width: 200px;
}

.integrity-items-table tbody {
    display: table-row-group;
}

.integrity-items-table tr {
    display: table-row;
}

.integrity-items-table tr:hover {
    background: #f8f9ff;
}

.integrity-items-table small {
    color: #6c757d;
    font-size: 0.8em;
}

.table-note {
    margin: 10px 0 0 0;
    font-size: 0.8rem;
    color: #6c757d;
    font-style: italic;
    text-align: center;
    padding: 8px;
    background: #f8f9fa;
}

/* Gantt Chart Styles */
.gantt-header-info {
    text-align: center;
    padding: 20px;
    background: #f8f9fa;
    border-bottom: 1px solid #e9ecef;
}

.gantt-header-info h3 {
    margin-bottom: 10px;
    color: #495057;
}

.gantt-header-info p {
    margin-bottom: 15px;
    color: #6c757d;
}

.gantt-results {
    min-height: 400px;
}

.gantt-container {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.gantt-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background: #f8f9fa;
    border-bottom: 1px solid #e9ecef;
}

.gantt-controls {
    display: flex;
    align-items: center;
    gap: 15px;
}

.gantt-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 8px 12px;
    background: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 0.875rem;
    cursor: pointer;
    transition: background-color 0.2s;
}

.gantt-btn:hover {
    background: #0056b3;
}

.gantt-select {
    padding: 8px 12px;
    border: 1px solid #ced4da;
    border-radius: 4px;
    font-size: 0.875rem;
    background: white;
}

.gantt-checkbox {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.875rem;
    cursor: pointer;
}

.gantt-checkbox input[type="checkbox"] {
    margin: 0;
}

.gantt-zoom-control {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    color: #495057;
}

.gantt-zoom-slider {
    width: 120px;
    height: 6px;
    background: #e9ecef;
    border-radius: 3px;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

.gantt-zoom-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: #007bff;
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.gantt-zoom-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: #007bff;
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.gantt-zoom-slider::-webkit-slider-track {
    background: #e9ecef;
    border-radius: 3px;
    height: 6px;
}

.gantt-zoom-slider::-moz-range-track {
    background: #e9ecef;
    border-radius: 3px;
    height: 6px;
    border: none;
}

.gantt-info {
    font-size: 0.875rem;
    color: #6c757d;
}

.gantt-main {
    display: flex;
    height: 600px;
    overflow: hidden;
}

.gantt-left-panel {
    width: 550px;
    border-right: 1px solid #e9ecef;
    overflow-y: auto;
    overflow-x: hidden;
    min-width: 500px;
}

.gantt-right-panel {
    flex: 1;
    position: relative;
    display: flex;
    flex-direction: column;
    overflow: auto;
}

.gantt-header {
    display: flex;
    background: #f8f9fa;
    border-bottom: 1px solid #e9ecef;
    font-weight: 600;
    font-size: 0.875rem;
    position: sticky;
    top: 0;
    z-index: 10;
    height: 48px;
    white-space: nowrap;
    box-sizing: border-box;
}

.gantt-header-cell {
    padding: 12px 8px;
    border-right: 1px solid #e9ecef;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    user-select: none;
    white-space: nowrap;
    box-sizing: border-box;
}

.gantt-header-cell .resize-handle {
    position: absolute;
    right: 0;
    top: 0;
    width: 4px;
    height: 100%;
    background: transparent;
    cursor: col-resize;
    z-index: 1;
}

.gantt-header-cell .resize-handle:hover {
    background: #007bff;
}

.gantt-header-cell.resizing {
    background: #e3f2fd;
}

.gantt-task-cell {
    padding: 6px 8px;
    border-right: 1px solid #f1f3f4;
    display: flex;
    align-items: center;
    font-size: 0.875rem;
    overflow: hidden;
    position: relative;
}

.gantt-task-row{
    display: flex;
}

.gantt-task-row:hover {
    background: #f8f9fa;
    display: flex;
}

.gantt-task-row.critical {
    background: #ffebee;
    display: flex;
}

.gantt-wbs-row {
    display: flex;
    border-bottom: 1px solid #f1f3f4;
    transition: background-color 0.1s;
    background: #f0f8f0;
    font-weight: 600;
}

.gantt-wbs-row:hover {
    background: #e8f5e8;
}

.gantt-wbs-row.critical {
    background: #fff3e0;
}

.wbs-name {
    font-weight: 600;
    color: #2e7d32;
}

.expand-icon {
    display: inline-block;
    width: 16px;
    text-align: center;
    margin-right: 5px;
    font-size: 0.75rem;
    color: #6c757d;
}

.expand-icon.has-children {
    cursor: pointer;
    color: #007bff;
}

.expand-icon.has-children:hover {
    color: #0056b3;
}

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

.progress-indicator {
    position: relative;
    width: 100%;
    height: 16px;
    background: #f1f3f4;
    border-radius: 8px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: #28a745;
    border-radius: 8px;
    transition: width 0.3s;
}

.progress-text {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 500;
    color: #333;
}

.gantt-timeline-header {
    position: sticky;
    top: 0;
    height: 48px;
    background: #f8f9fa;
    border-bottom: 1px solid #e9ecef;
    overflow-x: hidden;
    overflow-y: hidden;
    z-index: 9;
    white-space: nowrap;
    box-sizing: border-box;
    flex-shrink: 0;
}

.timeline-header-cell {
    position: absolute;
    top: 0;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 600;
    border-right: 1px solid #e9ecef;
    background: #f8f9fa;
    white-space: nowrap;
    box-sizing: border-box;
}

.gantt-chart-area {
    position: relative;
    flex: 1;
    overflow: auto;
}

.gantt-grid {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
}

.grid-line {
    position: absolute;
    background: #e9ecef;
}

.grid-line.vertical {
    width: 1px;
    height: 100%;
}

.grid-line.horizontal {
    height: 1px;
    width: 100%;
}

.gantt-bars {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 3;
}

.gantt-bar {
    position: absolute;
    border-radius: 4px;
    cursor: pointer;
    transition: opacity 0.2s;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.gantt-bar:hover {
    opacity: 0.8;
}

.gantt-wbs-bar {
    position: absolute;
    border-radius: 6px;
    cursor: pointer;
    transition: opacity 0.2s;
    display: flex;
    align-items: center;
    overflow: hidden;
    border: 2px solid #2e7d32;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.gantt-wbs-bar:hover {
    opacity: 0.8;
    box-shadow: 0 3px 6px rgba(0,0,0,0.15);
}

.gantt-progress {
    border-radius: 4px;
    background: #28a745 !important;
    opacity: 0.7;
}

.gantt-milestone {
    position: absolute;
    width: 16px;
    height: 16px;
    color: #F5A623;
    font-size: 16px;
    cursor: pointer;
    z-index: 4;
    display: flex;
    align-items: center;
    justify-content: center;
}

.gantt-dependencies {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

.dependency-line {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.gantt-today-line {
    position: absolute;
    top: 0;
    width: 2px;
    height: 100%;
    background: #dc3545;
    z-index: 5;
    display: none;
}

.gantt-today-line::before {
    content: 'Today';
    position: absolute;
    top: -20px;
    left: -20px;
    background: #dc3545;
    color: white;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.75rem;
    white-space: nowrap;
}

.gantt-legend {
    display: flex;
    justify-content: center;
    gap: 20px;
    padding: 15px 20px;
    background: #f8f9fa;
    border-top: 1px solid #e9ecef;
    font-size: 0.875rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.legend-color {
    width: 16px;
    height: 16px;
    border-radius: 2px;
}

.legend-color.milestone {
    background: none;
    color: #F5A623;
    font-size: 16px;
    width: auto;
    height: auto;
}

.legend-color.milestone::before {
    content: '♦';
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .gantt-main {
        flex-direction: column;
        height: auto;
    }
    
    .gantt-left-panel {
        width: 100%;
        max-height: 300px;
    }
    
    .gantt-right-panel {
        height: 400px;
    }
    
    .gantt-controls {
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .gantt-legend {
        flex-wrap: wrap;
        gap: 15px;
    }
}