.sng-container {
    max-width: 500px;
    margin: 40px auto;
    padding: 20px;
    background: #ffffffc7;
    border-radius: 12px;
    box-shadow: 0 0 12px rgba(0, 0, 0, 0.1);
    text-align: center;
    font-family: 'Segoe UI', sans-serif;
}

.sng-container h3 {
    font-size: 26px;
    margin-bottom: 15px;
    color: #222;
}

.sng-container select {
    padding: 10px;
    margin: 10px;
    font-size: 16px;
    border-radius: 6px;
    border: 1px solid #ccc;
    width: 45%;
}

.sng-container button {
    background: linear-gradient(to right, #89f7fe, #66a6ff);
    color: #fff;
    border: none;
    padding: 10px 20px;
    font-weight: bold;
    border-radius: 8px;
    cursor: pointer;
    margin-top: 10px;
    transition: background 0.3s ease;
}

.sng-container button:hover {
    background: linear-gradient(to right, #66a6ff, #89f7fe);
}

#sng-result {
    margin-top: 20px;
    font-size: 24px;
    font-weight: bold;
    color: #333;
    font-family: 'Courier New', Courier, monospace;
}

#sng-copy {
    margin-top: 15px;
}

@media (max-width: 480px) {
    .sng-container select, .sng-container button {
        width: 100%;
        margin-top: 10px;
    }
}