/* ============================================
   NARA ANALYTICS DASHBOARD - CHART STYLES
   ============================================ */

/* Chart Grid Layouts */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.charts-grid.single-row {
    grid-template-columns: 1fr;
}

/* Chart Card */
.chart-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    border: 1px solid var(--color-sand-200);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-base);
}

.chart-card:hover {
    box-shadow: var(--shadow-md);
}

.chart-card.large {
    grid-column: span 2;
}

.chart-card.full-width {
    grid-column: 1 / -1;
}

.chart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
}

.chart-header h3 {
    font-size: 1rem;
    font-weight: 500;
}

.chart-controls {
    display: flex;
    gap: 4px;
    background: var(--color-sand-100);
    padding: 4px;
    border-radius: var(--radius-md);
}

.chart-btn {
    padding: 6px 12px;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-gray-600);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.chart-btn:hover {
    color: var(--color-gray-800);
}

.chart-btn.active {
    background: var(--color-white);
    color: var(--color-terracotta);
    box-shadow: var(--shadow-sm);
}

.chart-container {
    position: relative;
    height: 280px;
}

.chart-container.tall {
    height: 400px;
}

.chart-container.short {
    height: 200px;
}

/* Legend Controls */
.legend-controls {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    background: var(--color-sand-100);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.legend-item:hover {
    background: var(--color-sand-200);
}

.legend-item.disabled {
    opacity: 0.5;
}

.legend-color {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

/* Chart.js Tooltip Override */
.chartjs-tooltip {
    background: var(--color-night) !important;
    border-radius: var(--radius-md) !important;
    padding: var(--space-sm) var(--space-md) !important;
    font-family: var(--font-body) !important;
    font-size: 0.8125rem !important;
    box-shadow: var(--shadow-lg) !important;
}

/* No Data State */
.no-data-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--color-gray-500);
}

.no-data-state svg {
    width: 48px;
    height: 48px;
    margin-bottom: var(--space-md);
    opacity: 0.5;
}

.no-data-state span {
    font-size: 0.875rem;
}

/* Chart Color Palette */
:root {
    --chart-color-1: #C4785D;
    --chart-color-2: #B87333;
    --chart-color-3: #D4A855;
    --chart-color-4: #8B9A7D;
    --chart-color-5: #6B5B7A;
    --chart-color-6: #5B7A8A;
    --chart-color-7: #5B8A72;
    --chart-color-8: #A65D42;
    --chart-color-9: #7A6B5B;
    --chart-color-10: #8A5B7A;
}

/* Responsive */
@media (max-width: 992px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }
    
    .chart-card.large {
        grid-column: span 1;
    }
    
    .chart-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-md);
    }
}

@media (max-width: 768px) {
    .chart-container {
        height: 240px;
    }
    
    .chart-container.tall {
        height: 320px;
    }
}