#dsn-popup {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.55);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}

#dsn-popup.dsn-hidden {
    display: none;
}

.dsn-box {
    background: #fff;
    max-width: 480px;
    padding: 25px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.dsn-box h3 {
    margin-top: 0;
    color: #c0392b;
}

.dsn-box button {
    margin-top: 20px;
    padding: 10px 25px;
    border: none;
    background: #2c3e50;
    color: #fff;
    cursor: pointer;
    border-radius: 4px;
}