*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;min-height:100vh;display:flex;align-items:center;justify-content:center;background:#f5f5f5;color:#333}.container{width:100%;max-width:400px;padding:20px}.card{background:#fff;border-radius:12px;padding:32px;box-shadow:0 2px 8px #0000001a;text-align:center;margin-bottom:20px}.card.error{border:2px solid #ef4444;background:#fef2f2}.card h1{font-size:24px;margin-bottom:12px;color:#111}.card h2{font-size:18px;margin-bottom:16px;color:#111}.card p{color:#666;margin-bottom:8px}.upload-label{display:inline-flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 60px;border:2px dashed #ccc;border-radius:8px;cursor:pointer;margin-top:20px;transition:all .2s}.upload-label:hover{border-color:#3b82f6;background:#eff6ff}.upload-label input{display:none}.upload-label span{font-size:16px;color:#666}.spinner{width:40px;height:40px;border:3px solid #e5e7eb;border-top-color:#3b82f6;border-radius:50%;animation:spin .8s linear infinite;margin:0 auto 16px}.file-list{list-style:none;text-align:left}.file-list li{display:flex;justify-content:space-between;align-items:center;padding:10px 12px;border-bottom:1px solid #eee}.file-list li:last-child{border-bottom:none}.file-name{font-size:14px;color:#333;word-break:break-all}.file-status{font-size:12px;color:#666;white-space:nowrap;margin-left:12px}.file-list li.uploading .file-status{color:#3b82f6}.file-list li.completed .file-status{color:#22c55e}.file-list li.error .file-status{color:#ef4444}.file-list li.uploading .file-status:before{content:"";display:inline-block;width:10px;height:10px;border:2px solid #3b82f6;border-top-color:transparent;border-radius:50%;animation:spin .8s linear infinite;margin-right:6px}@keyframes spin{to{transform:rotate(360deg)}}@media(prefers-color-scheme:dark){body{background:#1a1a1a;color:#eee}.card{background:#262626;box-shadow:0 2px 8px #0000004d}.card h1,.card h2{color:#fff}.card p{color:#aaa}.card.error{background:#2a1a1a;border-color:#ef4444}.upload-label{border-color:#444}.upload-label:hover{border-color:#3b82f6;background:#1a2a3a}.upload-label span{color:#aaa}.spinner{border-color:#444;border-top-color:#3b82f6}.file-list li{border-color:#333}.file-name{color:#eee}.file-status{color:#aaa}.file-list li.completed .file-status{color:#4ade80}}