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(max-width:520px){.file-upload,.qr-scanner,.text-input{padding:1.35rem}.generator-section,.qr-data-display,.qr-generator,.scanner-section{border-radius:22px;padding:1.75rem}.history-menu{border-radius:22px}.scanner-meta{align-items:stretch;flex-direction:column}.scanner-meta-actions{justify-content:space-between}.camera-select{width:100%}}