/* Charts */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

body.is-drag-selecting { user-select: none; cursor: cell; }

@media (max-width: 900px) {
    .stats-summary {
        grid-template-columns: repeat(1, minmax(0, 1fr));
    }

}

@media (max-width: 700px) {
    .charts-grid { grid-template-columns: 1fr; }
}

.progress-charts {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.chart-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem 1.5rem;
}

.stats-page[data-active-metric] .progress-charts .chart-card {
    border-color: color-mix(in srgb, var(--active-metric-accent) 35%, var(--border));
}

.chart-card__header {
    display: flex;
    align-items: baseline;
    gap: .45rem;
    flex-wrap: wrap;
    margin-bottom: 1.1rem;
}

.chart-card__title {
    font-size: .85rem;
    font-weight: 600;
    color: var(--text);
    text-transform: uppercase;
    letter-spacing: .04em;
}

.chart-card__subtitle {
    font-size: .8rem;
    font-weight: 500;
    color: var(--text-muted);
}

.chart-card__subtitle::before {
    content: '';
    display: inline-block;
    width: .25rem;
    height: .25rem;
    margin-right: .45rem;
    border-radius: 50%;
    vertical-align: middle;
    background: var(--border);
}

.chart-card h2 {
    font-size: .85rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: .06em;
    margin-bottom: 1rem;
}

.charts-empty {
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.chart-skeleton {
    display: block;
    width: 100%;
    height: 180px;
    border-radius: 6px;
    background: linear-gradient(90deg, var(--surface-2) 25%, var(--border) 50%, var(--surface-2) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s ease-in-out infinite;
}

@keyframes shimmer {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}


@media (max-width: 600px) {
    .progress-charts {
        grid-template-columns: 1fr;
    }

}