:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}.app{max-width:600px;margin:0 auto;padding:2rem;text-align:center;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}h1{color:#333;margin-bottom:2rem;font-size:2.5rem}.upload-container,.download-container{background:#fff;border-radius:12px;padding:2rem;box-shadow:0 4px 6px #0000001a;margin-bottom:2rem}.download-container h2{margin-top:0;margin-bottom:1.5rem;color:#333;font-size:1.5rem}.file-input-container{margin-bottom:20px}#file-input{display:none}.file-input-label{display:inline-block;padding:12px 24px;background:#007bff;color:#fff;border-radius:8px;cursor:pointer;transition:background-color .3s ease;font-size:1rem;font-weight:500}.file-input-label:hover{background:#0056b3}.file-input-label:active{transform:translateY(1px)}.file-info{background:#e9ecef;border-radius:8px;padding:1rem;margin:1rem 0;text-align:left}.file-info p{margin:.5rem 0;color:#495057}.upload-button{background:#007bff;color:#fff;border:none;padding:12px 24px;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;transition:background-color .3s ease;width:100%;margin-top:1rem}.upload-button:hover:not(:disabled){background:#0056b3}.upload-button:disabled{background:#ccc;cursor:not-allowed}.download-button{background:#28a745;color:#fff;border:none;padding:12px 24px;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;transition:background-color .3s ease;width:100%;margin-top:1rem}.download-button:hover:not(:disabled){background:#1e7e34}.download-button:disabled{background:#ccc;cursor:not-allowed}.progress-container{margin:2rem 0;padding:1.5rem;background:#fff;border-radius:8px;border:1px solid #dee2e6}.overall-progress{margin-bottom:2rem}.progress-bar{width:100%;height:20px;background:#e9ecef;border-radius:10px;overflow:hidden;margin-top:.5rem}.progress-fill{height:100%;background:linear-gradient(90deg,#28a745,#20c997);transition:width .3s ease;border-radius:10px}.progress-text{margin-top:.5rem;font-size:.9rem;color:#495057;font-weight:500}.failed-chunks{color:#dc3545;font-weight:600}.chunk-progress h4{margin-bottom:1rem;color:#495057;font-size:1.1rem}.chunk-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(40px,1fr));gap:8px;max-width:400px;margin:0 auto}.chunk-status{width:40px;height:40px;border-radius:6px;display:flex;align-items:center;justify-content:center;font-size:.8rem;font-weight:600;color:#fff;cursor:pointer;transition:all .2s ease}.chunk-status.pending{background:#6c757d}.chunk-status.uploading{background:#007bff;animation:pulse 1.5s infinite}.chunk-status.completed{background:#28a745}.chunk-status.failed{background:#dc3545;animation:shake .5s ease-in-out}@keyframes pulse{0%{opacity:1}50%{opacity:.6}to{opacity:1}}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-2px)}75%{transform:translate(2px)}}.chunk-status:hover{transform:scale(1.1)}.status{margin-top:1rem;padding:1rem;border-radius:8px;font-weight:500}.status.success{background:#d4edda;color:#155724;border:1px solid #c3e6cb}.status.error{background:#f8d7da;color:#721c24;border:1px solid #f5c6cb}.config-info{background:#f8f9fa;border-radius:8px;padding:1.5rem;text-align:left;border:1px solid #dee2e6}.config-info h3{margin-top:0;color:#495057;font-size:1.25rem}.config-info h4{margin-bottom:.5rem;color:#495057;font-size:1.1rem}.config-info p{margin:.5rem 0;color:#6c757d;font-family:Courier New,monospace;font-size:.9rem}.key-input-container{margin-bottom:20px}.key-input-label{display:block;margin-bottom:8px;font-weight:600;color:#333}.key-input{width:100%;padding:12px 16px;border:2px solid #ddd;border-radius:8px;font-size:16px;font-family:inherit;transition:border-color .3s ease}.key-input:focus{outline:none;border-color:#007bff}.key-input:disabled{background-color:#f5f5f5;cursor:not-allowed}.key-input-hint{display:block;margin-top:4px;font-size:12px;color:#666;font-style:italic}@media(max-width:768px){.app,.upload-container,.progress-container{padding:1rem}.chunk-grid{grid-template-columns:repeat(auto-fill,minmax(35px,1fr));gap:6px}.chunk-status{width:35px;height:35px;font-size:.7rem}h1{font-size:2rem}}