custom_css = '''
.card {
    transition: transform 0.2s;
}
.card:hover {
    transform: scale(1.02);
}
.dash-tabs-container {
    margin-top: 20px;
}
.dash-tab {
    padding: 10px 20px;
    font-size: 16px;
}
.dash-tab--selected {
    border-top: 3px solid #2c3e50 !important;
    font-weight: bold;
}
@media (max-width: 768px) {
    .col-md-4 {
        margin-bottom: 20px;
    }
}