body {
    background: linear-gradient(135deg, #000000, #626262, #000000);
}

.card {
    background: rgba(255, 255, 255, 0.9);
    border: none;
    margin-bottom: 30%;
}


.card-header {
    background: linear-gradient(90deg, #000000, #bcbcbc);
    color: white;
    font-weight: bold;
    text-align: center;
    border-bottom: none;
}

.btn-primary {
    background: linear-gradient(135deg, #000000, #626262, #000000);
    border: none;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: linear-gradient(90deg, #8B0000, #000000);
    transform: scale(1.02);
}

.form-control:focus {
    border-color: #8B0000;
    box-shadow: 0 0 0 0.2rem rgba(139, 0, 0, 0.25);
}

.form-check-input:checked {
    background-color: #8B0000;
    border-color: #8B0000;
}

.img-fluid {
    max-width: 150px;
    margin: 0rem auto;
    display: block;
    border: 3px solid #8B0000;
    padding: 3px;
    background: white;
}

.alert-danger {
    background: rgba(139, 0, 0, 0.1);
    border-color: #8B0000;
    color: #8B0000;
}