.background-remove .model-loading{background:#f8f9fa;border:1px solid #e9ecef;border-radius:8px;padding:20px;margin-bottom:20px;text-align:center}.background-remove .model-loading .loading-content{display:flex;flex-direction:column;align-items:center;gap:12px}.background-remove .model-loading .loading-content .spinner{width:32px;height:32px;border:3px solid #f3f3f3;border-top-color:#41907c;border-radius:50%;animation:spin 1s linear infinite}.background-remove .model-loading .loading-content p{margin:0;color:#666;font-size:14px}.background-remove .preview{display:flex;justify-content:center;gap:20px;margin-top:20px;flex-wrap:wrap;padding:20px}.background-remove .result-container{position:relative;display:inline-block}.background-remove .result-canvas{max-width:100%;height:auto;border:1px solid #ddd;border-radius:4px;background:linear-gradient(45deg,#f0f0f0 25%,transparent 0),linear-gradient(-45deg,#f0f0f0 25%,transparent 0),linear-gradient(45deg,transparent 75%,#f0f0f0 0),linear-gradient(-45deg,transparent 75%,#f0f0f0 0);background-size:20px 20px;background-position:0 0,0 10px,10px -10px,-10px 0}.background-remove .processing-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:rgba(255,255,255,.9);display:flex;align-items:center;justify-content:center;border-radius:4px}.background-remove .processing-content{text-align:center}.background-remove .processing-content .processing-spinner{width:32px;height:32px;border:3px solid #f3f3f3;border-top-color:#41907c;border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 10px}.background-remove .processing-content p{margin:0;color:#666;font-size:14px;font-weight:500}.background-remove .actions{display:flex;flex-direction:column;justify-content:center;padding:20px;border-top:1px solid #e5e7eb;margin-top:20px}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}@media screen and (max-width:768px){.background-remove .model-loading{padding:15px;margin-bottom:15px}.background-remove .model-loading .loading-content{gap:10px}.background-remove .model-loading .loading-content .spinner{width:28px;height:28px}.background-remove .model-loading .loading-content p{font-size:13px}.background-remove .preview{flex-direction:column;align-items:center;gap:15px;padding:15px}.background-remove .result-canvas{max-width:calc(100vw - 60px);max-height:60vh;object-fit:contain}.background-remove .processing-overlay .processing-content .processing-spinner{width:28px;height:28px}.background-remove .processing-overlay .processing-content p{font-size:13px}.background-remove .actions{padding:15px}}@media screen and (max-width:480px){.background-remove .preview{padding:10px;gap:10px}.background-remove .result-canvas{max-width:calc(100vw - 40px);max-height:50vh}.background-remove .actions,.background-remove .model-loading{padding:10px}}.device-switch{margin-top:1rem;padding:1rem;border:1px solid #e0e0e0;border-radius:8px;background:#f8f9fa}.device-switch .device-info{margin-bottom:.75rem}.device-switch .device-info .current-device{font-weight:600;color:#495057;display:block;margin-bottom:.25rem}.device-switch .device-info .device-hint{font-size:.875rem;color:#6c757d;line-height:1.4}.device-switch .btn{min-width:120px}