body {
    background-color: #f4f6f9;
    padding-top: 80px;
}

.card {
    max-width: 500px;
    margin: auto;
    margin-top: 30px;
    padding: 30px;
    border-radius: 16px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.08);
    background-color: #ffffff;
}

h3 {
    font-weight: bold;
}

.btn-danger {
    font-weight: 600;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(220, 53, 69, 0.3);
}

.btn-danger:hover {
    background-color: #bb2d3b;
}

#successMsg {
    font-weight: 500;
}