.blc-container {
    max-width: 400px;
    margin: 20px auto;
    background: #fff;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    text-align: center;
    font-family: Arial, sans-serif;
}
.blc-form label {
    display: block;
    margin-top: 10px;
    font-weight: bold;
}
.blc-form input, .blc-form select {
    width: 100%;
    padding: 8px;
    margin-top: 4px;
    border: 1px solid #ccc;
    border-radius: 6px;
}
.blc-form button {
    margin-top: 15px;
    width: 100%;
    padding: 10px;
    background-color: #0073aa;
    color: #fff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}
.blc-form button:hover {
    background-color: #005f8d;
}
.blc-result {
    margin-top: 15px;
    font-size: 16px;
    font-weight: bold;
}