.card {
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.card-header {
    background-color: #f8f9fa;
    border-bottom: 1px solid #eee;
}

#power-generation-chart {
    height: 400px;
    width: 100%;
}

.card-title {
    margin-bottom: 0;
    color: #333;
}

.text-muted {
    color: #6c757d !important;
}

.card-body.text-center h3 {
    font-size: 2rem;
    font-weight: 600;
    color: #007bff;
}