body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #121212;
    color: #e0e0e0;
    margin: 0;
}
.container {
    background: #1e1e1e;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.5);
    text-align: center;
    width: 300px;
}
.container p {
    margin: 0;
    padding-bottom: 10px;
    font-size: 18px;
    font-weight: 500;
}
#qrText {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #333;
    border-radius: 4px;
    background-color: #333;
    color: #e0e0e0;
}
button {
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    background-color: #007bff;
    color: #fff;
    cursor: pointer;
    font-size: 16px;
    margin-top: 10px;
}
button:hover {
    background-color: #0056b3;
}
#imgBox {
    margin-top: 20px;
}
#qrImage {
    max-width: 100%;
    border: 1px solid #333;
    border-radius: 4px;
}
.hidden {
    display: none;
}