*{box-sizing:border-box;margin:0;padding:0}:root{--ios-blue: #007aff;--ios-red: #ff3b30;--ios-green: #34c759;--ios-gray: #8e8e93;--ios-light-gray: #e5e5ea;--ios-ultra-light-gray: #f2f2f7;--ios-border-radius: 10px}body{font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,SF Pro Icons,Helvetica Neue,Helvetica,Arial,sans-serif;line-height:1.5;color:#000;background-color:#f2f2f7;padding:20px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.container{max-width:500px;margin:0 auto 24px;background-color:#fff;border-radius:var(--ios-border-radius);box-shadow:0 2px 8px #0000001f;padding:24px}h1{text-align:center;margin-bottom:16px;font-weight:600;font-size:22px;letter-spacing:-.5px}p{color:#3c3c43;font-size:14px;text-align:center;margin-bottom:24px}.upload-area{border:2px dashed var(--ios-light-gray);border-radius:var(--ios-border-radius);padding:32px 20px;text-align:center;margin-bottom:24px;transition:all .2s;cursor:pointer;background-color:var(--ios-ultra-light-gray)}.upload-area:hover,.upload-area.active{border-color:var(--ios-blue);background-color:#007aff0d}.upload-prompt .icon{font-size:48px;margin-bottom:16px}.primary-btn{background-color:var(--ios-blue);color:#fff;border:none;padding:12px 20px;border-radius:12px;cursor:pointer;font-size:16px;font-weight:600;transition:all .2s;width:100%;margin-top:8px}#selectFilesBtn{background-color:var(--ios-blue);color:#fff;border:none;padding:8px 16px;border-radius:12px;cursor:pointer;font-size:14px;font-weight:500;transition:all .2s;margin-top:12px}.primary-btn:hover,#selectFilesBtn:hover{background-color:#0062cc;transform:translateY(-1px)}.primary-btn:active,#selectFilesBtn:active{transform:translateY(1px)}.primary-btn:disabled{background-color:var(--ios-light-gray);color:var(--ios-gray);cursor:not-allowed;transform:none}.file-list{margin:20px 0}.file-item.dragging{opacity:.6;cursor:grabbing}.file-item.drag-over{border:2px dashed #4a90e2}.video-preview-container{display:none;position:absolute;top:-210px;left:50%;transform:translate(-50%);z-index:10;background:rgba(0,0,0,.8);border-radius:4px;box-shadow:0 2px 8px #0000004d;padding:4px}.video-preview{max-width:320px;max-height:200px;display:block}.remove-btn{background-color:var(--ios-red);color:#fff;border:none;border-radius:8px;padding:6px 10px;cursor:pointer;font-size:12px;font-weight:500;margin-left:10px}.progress-container{margin-top:24px;animation:fadeIn .5s}.progress-label{font-size:14px;margin-bottom:8px;color:var(--ios-gray)}.progress-bar{height:8px;background-color:var(--ios-light-gray);border-radius:4px;margin:8px 0;overflow:hidden}.progress-fill{height:100%;background-color:var(--ios-blue);width:0%;border-radius:4px;transition:width .3s ease-out}.progress-text{font-size:12px;text-align:right;color:var(--ios-gray)}.download-container{text-align:center;margin-top:24px;padding:20px;border-radius:var(--ios-border-radius);background-color:#34c7591a;border:1px solid rgba(52,199,89,.2);animation:fadeIn .5s}.download-container p{color:var(--ios-green);font-weight:500;margin-bottom:12px}.download-container .primary-btn{background-color:var(--ios-green)}.download-container .primary-btn:hover{background-color:#30b650}#compatibility-warning{max-width:500px;margin:0 auto;border-radius:var(--ios-border-radius);animation:fadeIn .5s}@keyframes slideIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@media (max-width: 500px){body{padding:10px}.container{border-radius:var(--ios-border-radius);padding:20px}h1{font-size:20px}.upload-area{padding:24px 15px}.upload-prompt .icon{font-size:36px}}.wasm-loading-indicator{position:fixed;bottom:20px;right:20px;background-color:#000000b3;color:#fff;padding:8px 16px;border-radius:20px;font-size:12px;display:none;align-items:center;gap:8px;z-index:1000;transition:all .3s ease;box-shadow:0 2px 10px #0003}.wasm-loading-indicator.loaded{background-color:#34c759cc;animation:fadeOut 3s forwards 2s}.wasm-loading-indicator.error{background-color:#ff3b30cc}.loading-spinner{width:12px;height:12px;border:2px solid rgba(255,255,255,.3);border-radius:50%;border-top-color:#fff;animation:spin 1s linear infinite}.wasm-loading-indicator.loaded .loading-spinner{border-color:transparent;border-top-color:transparent;animation:none}@keyframes spin{to{transform:rotate(360deg)}}@keyframes fadeOut{to{opacity:0;visibility:hidden}}.duration-label{font-size:12px;color:var(--ios-gray);margin-left:8px;min-width:40px}.duration-info{text-align:right;font-size:14px;color:var(--ios-blue);margin-top:8px;margin-bottom:16px;font-weight:500}.thumbnail-container{width:80px;height:45px;margin-right:10px;border-radius:4px;overflow:hidden;background-color:#eee;flex-shrink:0;display:flex;align-items:center;justify-content:center;position:relative}.thumbnail-container.loading:after{content:"";position:absolute;width:16px;height:16px;border:2px solid rgba(0,0,0,.1);border-top:2px solid var(--ios-blue);border-radius:50%;animation:spin 1s linear infinite}.video-thumbnail{max-width:100%;max-height:100%;object-fit:contain;transition:opacity .3s ease-in}.video-thumbnail.hidden{opacity:0}.file-item{position:relative;cursor:grab;display:flex;align-items:center;padding:8px;border-radius:4px;margin-bottom:8px;background-color:#f5f5f5;transition:background-color .2s}.file-name{flex-grow:1;text-overflow:ellipsis;overflow:hidden;white-space:nowrap;margin-right:8px}.drag-handle{cursor:grab;padding:0 8px;color:#888;font-size:16px;margin-right:4px}