body {
    background-color: #f8f9fa;
}
.card {
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}
.card-header {
    background-color: #00796b;
    color: white;
}
.btn-primary {
    background-color: #00796b;
    border-color: #00796b;
}
.btn-primary:hover {
    background-color: #004d40;
    border-color: #004d40;
}
.alert {
    margin-top: 10px;
}