.qr-container{background:#fff;border-radius:8px;padding:2rem;box-shadow:0 2px 4px rgba(0,0,0,.1)}.qr-preview{text-align:center;margin:2rem 0;min-height:300px;display:flex;align-items:center;justify-content:center}.qr-preview canvas{max-width:100%;height:auto}.color-picker{width:100%;height:40px;padding:0;border:1px solid #ced4da;border-radius:4px}.options-container{margin:1.5rem 0}.processing-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(255,255,255,.8);display:none;align-items:center;justify-content:center;z-index:1000}.processing-overlay.active{display:flex}.spinner{width:40px;height:40px;border:4px solid #f3f3f3;border-top:4px solid var(--primary-color);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}100%{transform:rotate(360deg)}}
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