.card {
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    border: none;
}

.card-header {
    background-color: #fff;
    border-bottom: 1px solid #eee;
    padding: 20px;
}

.card-body {
    padding: 30px;
}

.btn-primary {
    background-color: #4CAF50;
    border-color: #4CAF50;
}

.btn-primary:hover {
    background-color: #45a049;
    border-color: #45a049;
}

.form-control:focus {
    border-color: #4CAF50;
    box-shadow: 0 0 0 0.2rem rgba(76,175,80,0.25);
}

.alert {
    margin-bottom: 20px;
}