*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #f2f2f7;--surface: #ffffff;--surface2: #e5e5ea;--border: #d1d1d6;--text: #1c1c1e;--text-muted: #6e6e73;--text-faint: #c7c7cc;--accent: #6366f1;--accent-hover: #4f52e0;--green: #34c759;--red: #ff3b30;--yellow: #ff9500}html,body,#root{height:100%}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,SF Pro Display,Segoe UI,sans-serif;font-size:14px;-webkit-font-smoothing:antialiased;-webkit-user-select:none;user-select:none}.app{display:flex;flex-direction:column;min-height:100vh}.titlebar{height:28px;-webkit-app-region:drag;flex-shrink:0}.header{display:flex;align-items:center;justify-content:space-between;max-width:720px;width:100%;margin:0 auto;padding:20px 20px 12px}.header-left{display:flex;align-items:center;gap:8px}.app-icon{font-size:18px}.app-title{font-size:16px;font-weight:600;color:var(--text)}.main{display:flex;flex-direction:column;padding:0 20px 40px;gap:12px;max-width:720px;width:100%;margin:0 auto}.settings-bar{display:flex;flex-direction:column;gap:14px;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:14px 16px}.setting-group{display:flex;align-items:flex-start;gap:8px}.setting-pills-col{display:flex;flex-direction:column;gap:4px}.option-desc{font-size:11px;color:var(--text-muted);padding-left:2px}.output-folder-group{margin-left:auto}.setting-label{font-size:12px;color:var(--text-muted);font-weight:500;white-space:nowrap;padding-top:6px;min-width:68px}.option-pills{display:flex;gap:4px}.pill{display:flex;flex-direction:column;align-items:center;padding:5px 12px;border-radius:8px;border:1px solid var(--border);background:transparent;color:var(--text-muted);font-size:12px;font-weight:500;cursor:pointer;transition:all .15s;line-height:1.2}.pill:hover:not(:disabled){background:var(--surface2);color:var(--text);border-color:var(--accent)}.pill.active{background:var(--accent);color:#fff;border-color:var(--accent)}.pill-sub{font-size:9px;opacity:.7;font-weight:400}.folder-btn{display:flex;align-items:center;gap:6px;padding:5px 12px;border-radius:8px;border:1px solid var(--border);background:transparent;color:var(--text-muted);font-size:12px;cursor:pointer;transition:all .15s;max-width:200px}.folder-btn:hover:not(:disabled){background:var(--surface2);color:var(--text);border-color:var(--accent)}.folder-icon{flex-shrink:0}.folder-path{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text)}.dropzone-hero{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;border:2px dashed var(--border);border-radius:20px;cursor:pointer;transition:all .15s;background:var(--surface);padding:80px 20px}.dropzone-hero:hover,.dropzone-hero.drag-over{border-color:var(--accent);background:#6366f108}.dropzone-icon{font-size:44px;opacity:.35;margin-bottom:4px}.dropzone-title{font-size:20px;font-weight:700;color:var(--text)}.dropzone-sub{font-size:14px;color:var(--text-muted)}.dropzone-link{color:var(--accent);font-weight:500}.dropzone-hint{font-size:12px;color:var(--text-faint);margin-top:4px}.format-row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.format-card{display:flex;flex-direction:column;gap:4px;padding:14px 16px;border-radius:12px;border:1.5px solid var(--border);background:var(--surface);cursor:pointer;transition:all .15s;text-align:left}.format-card:hover{border-color:var(--accent);background:#6366f108}.format-card.active{border-color:var(--accent);background:#6366f10f}.format-card-label{font-size:14px;font-weight:700;color:var(--text)}.format-card.active .format-card-label{color:var(--accent)}.format-card-desc{font-size:11px;color:var(--text-muted);line-height:1.4}.file-list-wrap{display:flex;flex-direction:column}.file-list{display:flex;flex-direction:column;gap:6px}.file-list::-webkit-scrollbar{width:4px}.file-list::-webkit-scrollbar-track{background:transparent}.file-list::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}.file-list.drag-over{outline:2px dashed var(--accent);outline-offset:4px;border-radius:8px}.file-card{display:flex;align-items:center;gap:12px;padding:10px 14px;background:var(--surface);border:1px solid var(--border);border-radius:10px;transition:border-color .15s;flex-shrink:0}.file-card.status-converting{border-color:var(--accent)}.file-card.status-done{border-color:#34c75966}.file-card.status-error{border-color:#ff3b304d}.file-card-icon{font-size:18px;flex-shrink:0;width:24px;text-align:center}.status-done .file-card-icon{color:var(--green)}.status-error .file-card-icon{color:var(--red)}.status-converting .file-card-icon{color:var(--accent);animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.file-card-info{flex:1;min-width:0;display:flex;flex-direction:column;gap:3px}.file-card-name{font-size:13px;font-weight:500;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-card-meta{font-size:11px;color:var(--text-muted)}.meta-done{color:var(--green)}.meta-error{color:var(--red)}.progress-bar{height:3px;background:var(--border);border-radius:2px;overflow:hidden;margin-top:4px}.progress-fill{height:100%;background:var(--accent);border-radius:2px;transition:width .2s}.file-card-actions{display:flex;align-items:center;gap:4px;flex-shrink:0}.btn-download{background:none;border:1px solid var(--border);color:var(--accent);cursor:pointer;font-size:14px;font-weight:600;padding:3px 8px;border-radius:6px;transition:all .15s}.btn-download:hover{background:#6366f114;border-color:var(--accent)}.remove-btn{background:none;border:none;color:var(--text-faint);cursor:pointer;font-size:12px;padding:4px 6px;border-radius:6px;transition:all .15s}.remove-btn:hover{background:#ff3b301a;color:var(--red)}.add-more{display:flex;align-items:center;justify-content:center;padding:10px;border:1px dashed var(--border);border-radius:10px;color:var(--text-muted);font-size:13px;cursor:pointer;transition:all .15s;flex-shrink:0}.add-more:hover{border-color:var(--accent);color:var(--accent);background:#6366f10a}.footer{display:flex;align-items:center;justify-content:space-between;padding-top:4px}.footer-stats{font-size:12px;color:var(--text-muted)}.stat-done{color:var(--green)}.footer-actions{display:flex;gap:8px;align-items:center}.btn-ghost{padding:7px 14px;border-radius:8px;border:1px solid var(--border);background:transparent;color:var(--text-muted);font-size:13px;cursor:pointer;transition:all .15s}.btn-ghost:hover:not(:disabled){background:var(--surface2);color:var(--text)}.btn-primary{padding:7px 20px;border-radius:8px;border:none;background:var(--accent);color:#fff;font-size:13px;font-weight:600;cursor:pointer;transition:all .15s}.btn-primary:hover:not(:disabled){background:var(--accent-hover)}.btn-primary:disabled{opacity:.6;cursor:default}.done-btn{background:var(--green)}.warning-banner{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 14px;background:#fff8eb;border:1px solid #f59e0b;border-radius:10px;font-size:12px;color:#92400e}.warning-close{background:none;border:none;color:#92400e;cursor:pointer;font-size:11px;padding:2px 4px;flex-shrink:0;opacity:.6}.warning-close:hover{opacity:1}.quality-slider-wrap{display:flex;align-items:center;gap:8px}.quality-slider{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:110px;height:4px;border-radius:2px;background:var(--border);outline:none;cursor:pointer}.quality-slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:14px;height:14px;border-radius:50%;background:var(--accent);cursor:pointer;transition:background .15s}.quality-slider::-webkit-slider-thumb:hover{background:var(--accent-hover)}.quality-slider:disabled{opacity:.4;cursor:default}.quality-value{font-size:12px;color:var(--text);font-weight:500;min-width:30px;text-align:right}