body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.card {
    border: none;
    border-radius: 15px;
    overflow: hidden;
}

.bg-primary {
    background: linear-gradient(135deg, #4e73df 0%, #224abe 100%) !important;
}

.card-body {
    padding: 3rem 2rem;
}

.input-group-text {
    border: none;
    border-radius: 10px 0 0 10px;
}

.form-control {
    border: none;
    padding: 0.75rem;
    background-color: #f8f9fa;
}

.input-group .form-control {
    border-radius: 0 10px 10px 0;
}

.form-control:focus {
    background-color: #fff;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.15);
}

.btn-primary {
    padding: 0.8rem;
    border-radius: 10px;
    background: linear-gradient(135deg, #4e73df 0%, #224abe 100%);
    border: none;
    font-weight: 500;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(13, 110, 253, 0.3);
}

.form-check-input:checked {
    background-color: #4e73df;
    border-color: #4e73df;
}

.alert {
    border-radius: 10px;
    border: none;
}

.shadow-lg {
    box-shadow: 0 1rem 3rem rgba(0,0,0,.175) !important;
}

/* Animasi */
.card {
    animation: slideUp 0.5s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Responsif */
@media (max-width: 768px) {
    .card-body {
        padding: 2rem 1.5rem;
    }
}