.chart-container {
    position: relative;
    height: 500px;
    background-color: var(--card-color);
    border-radius: 1rem;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.chart-container:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

canvas {
    width: 100% !important;
    height: 100% !important;
}

.chart-legend {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.5rem;
    padding: 1rem;
    background-color: var(--secondary-color);
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
}

.legend-item {
    display: flex;
    align-items: center;
    padding: 0.5rem 1rem;
    background-color: var(--card-color);
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.legend-item:hover {
    transform: translateY(-2px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow);
}

.legend-color {
    width: 1rem;
    height: 1rem;
    margin-right: 0.75rem;
    border-radius: 0.25rem;
}

.legend-text {
    font-size: 0.875rem;
    color: var(--text-color);
    font-weight: 500;
}