body { 
    background: var(--bg-page);
}

.container { 
    max-width: 1400px; 
    margin: 0 auto; 
    padding: 24px;
    box-sizing: border-box;
}

.header-card { 
    background: var(--bg-card); 
    padding: 20px 28px; 
    border-radius: 12px; 
    box-shadow: var(--card-shadow); 
    border: 1px solid var(--border-color);
    margin-bottom: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    transition: background-color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.header-text h2 { 
    margin: 0 0 4px 0;
    font-size: 1.5rem;
    color: var(--text-primary);
}

.header-text p {
    margin: 0;
    font-size: 0.92rem;
    color: var(--text-secondary);
}

/* Responsive Grid Dashboard */
#dashboard {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.metric-section-heading {
    margin: 0 0 4px;
    font-size: 1.4rem;
    color: var(--text-primary);
}

.metric-section-description {
    margin: 0 0 18px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.metric-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
    gap: 24px;
}

.chart-card { 
    background: var(--bg-card); 
    padding: 20px; 
    border-radius: 12px; 
    box-shadow: var(--card-shadow); 
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: background-color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.chart-title {
    margin: 0 0 6px 4px; 
    font-size: 1.15rem;
    color: var(--text-primary);
}

.chart-description {
    margin: 0 0 14px 4px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.45;
    flex-grow: 0;
}

.chart-container { 
    width: 100%; 
    height: 340px; 
    flex-grow: 1;
}

/* Responsive Breakpoints */
@media (max-width: 900px) {
    .metric-grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }
}

@media (max-width: 600px) {
    .container {
        padding: 14px;
    }
    .header-card {
        padding: 16px;
    }
    .chart-card {
        padding: 14px;
    }
    .chart-container {
        height: 290px;
    }
}

@media (max-width: 600px) {
    .container {
        padding: 14px;
    }
    .header-card {
        padding: 16px;
    }
    .chart-card {
        padding: 14px;
    }
    .chart-container {
        height: 290px;
    }
}