body {
    font-family: Arial, sans-serif;
    background-color: #121212;
    color: #ffffff;
    margin: 0;
    padding: 50px;
}

.container {
    max-width: 600px;
    margin: auto;
    background: #1e1e1e;
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 0 20px rgba(0,0,0,0.4);
}

h1 {
    margin-bottom: 25px;
}

input {
    width: 80%;
    padding: 12px;
    font-size: 16px;
    border: 1px solid #444;
    border-radius: 6px;
    background: #2a2a2a;
    color: white;
}

input::placeholder {
    color: #999;
}

button {
    margin-top: 15px;
    padding: 12px 20px;
    font-size: 16px;
    cursor: pointer;
    border: none;
    border-radius: 6px;
    background: #4f46e5;
    color: white;
}

button:hover {
    background: #6366f1;
}

#qrcode {
    margin-top: 30px;
    display: flex;
    justify-content: center;
    align-items: center;
}

#downloadBtn {
    margin-top: 25px;
}