.sbp-form {
    max-width: 500px;
    margin: 30px auto;
    padding: 25px;
    background: #fff;
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
    border-radius: 12px;
    font-family: Arial, sans-serif;
}
.sbp-form h2 {
    text-align: center;
    color: #333;
}
.sbp-form input {
    width: 100%;
    margin: 12px 0;
    padding: 12px;
    font-size: 16px;
    border: 1px solid #ddd;
    border-radius: 6px;
}
.sbp-form button {
    width: 100%;
    padding: 12px;
    background: #28a745;
    border: none;
    color: white;
    font-size: 16px;
    border-radius: 6px;
    cursor: pointer;
}
.sbp-form button:hover {
    background: #218838;
}
.sbp-success {
    color: green;
    text-align: center;
    margin-top: 15px;
}
.sbp-error {
    color: red;
    text-align: center;
    margin-top: 15px;
}