body {
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg, #667eea, #764ba2);
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    background: white;
    padding: 25px;
    width: 320px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

h2 {
    margin-bottom: 15px;
}

input, select {
    width: 100%;
    padding: 10px;
    margin: 8px 0;
    border-radius: 6px;
    border: 1px solid #ccc;
}

button {
    width: 100%;
    padding: 10px;
    margin-top: 10px;
    border: none;
    background: #667eea;
    color: white;
    border-radius: 6px;
    cursor: pointer;
    font-weight: bold;
}

button:hover {
    background: #5563d6;
}

#qr-box {
    margin-top: 20px;
}

#qrcode img {
    margin: auto;
}