.data-container {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    margin: 2rem auto;
    max-width: 1000px;
}

.chart-wrapper {
    background: #f8f9fa;
    border-radius: 12px;
    padding: 1.5rem;
    margin: 2rem 0;
}

.chart-controls {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 2rem;
}

.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
    margin-top: 2rem;
}