body {
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    min-height: 100vh;
    background: #2c2c2c;
    font-family: system-ui, sans-serif;
}
#qr-reader {
    width: 100%;
    max-width: 400px;
}
#result {
    margin-top: 12px;
    padding: 8px 12px;
    background: #585858;
    border: 1px solid #636363;
    border-radius: 4px;
    max-width: 400px;
    word-break: break-all;
}
@media print {
  body { display: none !important; }
}
img {
  -webkit-touch-callout: none;
  -webkit-user-select: none;
}