.scan-field { display: grid; grid-template-columns: 1fr auto; gap: 8px; align-items: end; }
.scan-field input { margin: 0; }
.scan-field button { white-space: nowrap; }
.reader-status { margin: -4px 0 14px; padding: 10px; border-radius: 8px; background: #f5faf6; }
.reader-status.scan-success { color: var(--green); background: #d9f2df; font-weight: 700; }
@media (max-width: 480px) { .scan-field { grid-template-columns: 1fr; } }