*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}:root{--bg: #0d1117;--bg2: #161b22;--bg3: #21262d;--bg4: #2d333b;--border: #30363d;--text: #e6edf3;--text2: #8b949e;--accent: #58a6ff;--accent-hover: #79c0ff;--danger: #f85149;--danger-hover: #ff6b63;--success: #3fb950;--orange: #d29922;--purple: #bc8cff;--radius: 10px;--radius-sm: 6px;--shadow: 0 4px 24px rgba(0,0,0,.4);--transition: .15s ease}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);min-height:100vh}#app{max-width:960px;margin:0 auto;padding:24px 20px}header{text-align:center;margin-bottom:28px}header h1{font-size:28px;font-weight:700;letter-spacing:-.5px}header h1 .icon{font-size:32px}.subtitle{color:var(--text2);margin-top:6px;font-size:14px}.drop-zone{border:2px dashed var(--border);border-radius:var(--radius);padding:40px 24px;text-align:center;cursor:pointer;transition:all var(--transition);background:var(--bg2)}.drop-zone:hover,.drop-zone.drag-over{border-color:var(--accent);background:#58a6ff0f}.drop-icon{font-size:48px;margin-bottom:10px}.drop-text{font-size:18px;font-weight:600;margin-bottom:6px}.drop-hint{font-size:13px;color:var(--text2);margin-bottom:18px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:5px;padding:9px 18px;border-radius:var(--radius-sm);font-size:13px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:all var(--transition);white-space:nowrap;-webkit-user-select:none;user-select:none}.btn:disabled{opacity:.4;cursor:not-allowed;pointer-events:none}.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}.btn-primary:hover{background:var(--accent-hover);border-color:var(--accent-hover)}.btn-outline{background:transparent;color:var(--text2);border-color:var(--border)}.btn-outline:hover{border-color:var(--text2);color:var(--text);background:var(--bg3)}.btn-outline-danger{background:transparent;color:var(--danger);border-color:var(--border)}.btn-outline-danger:hover{border-color:var(--danger);background:#f851491a}.btn-action{background:var(--bg3);color:var(--text);border-color:var(--border)}.btn-action:hover{border-color:var(--accent);color:var(--accent);background:#58a6ff14}.btn-sm{padding:6px 14px;font-size:12px}.btn-row{display:flex;flex-wrap:wrap;justify-content:center;gap:8px}.toolbar{display:flex;flex-direction:column;gap:8px;padding:12px 0;margin-top:16px}.toolbar-row{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px}.toolbar-row-1{padding-bottom:8px;border-bottom:1px solid var(--border)}.toolbar-left,.toolbar-right{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.badge{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:20px;font-size:12px;font-weight:600;line-height:1.4}.badge-count{background:var(--bg3);color:var(--text);border:1px solid var(--border)}.badge-img{background:#58a6ff1f;color:var(--accent)}.badge-pdf{background:#bc8cff1f;color:var(--purple)}.badge-office{background:#d299221f;color:var(--orange)}.file-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px;margin-top:8px}.file-card{position:relative;background:var(--bg2);border:2px solid transparent;border-radius:var(--radius);overflow:hidden;cursor:grab;transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition)}.file-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.file-card.dragging{opacity:.4}.file-card.drag-over{border-color:var(--accent)}.file-card.selected{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}.file-card .preview{width:100%;height:130px;object-fit:cover;display:block;background:var(--bg3)}.file-card .preview-placeholder{width:100%;height:130px;display:flex;align-items:center;justify-content:center;font-size:40px;background:var(--bg3)}.file-card .info{padding:8px 10px 6px;font-size:12px;color:var(--text2)}.file-card .info .name{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:140px;color:var(--text);font-weight:500}.file-card .info .type-tag{display:inline-block;padding:0 6px;border-radius:3px;font-size:10px;font-weight:600;margin-top:3px}.type-tag-img{background:#58a6ff26;color:var(--accent)}.type-tag-pdf{background:#bc8cff26;color:var(--purple)}.type-tag-office{background:#d2992226;color:var(--orange)}.card-top-actions{position:absolute;top:4px;right:4px;display:flex;gap:3px;opacity:0;transition:opacity var(--transition)}.file-card:hover .card-top-actions{opacity:1}.card-top-actions .card-btn{width:26px;height:26px;border-radius:4px;border:none;background:#000000a6;color:#fff;font-size:13px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background var(--transition)}.card-top-actions .card-btn:hover{background:#000000e6}.card-top-actions .card-btn.card-btn-danger:hover{background:var(--danger)}.card-bottom-actions{display:flex;border-top:1px solid var(--border)}.card-bottom-actions .card-btn{flex:1;padding:6px 0;border:none;background:transparent;color:var(--text2);font-size:12px;cursor:pointer;transition:all var(--transition);display:flex;align-items:center;justify-content:center;gap:3px}.card-bottom-actions .card-btn:hover{background:var(--bg3);color:var(--text)}.card-bottom-actions .card-btn+.card-btn{border-left:1px solid var(--border)}.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%);padding:12px 24px;border-radius:8px;font-size:14px;font-weight:500;background:var(--bg3);color:var(--text);border:1px solid var(--border);box-shadow:var(--shadow);z-index:999;transition:opacity .3s;max-width:90vw;text-align:center}.toast.success{border-color:var(--success)}.toast.error{border-color:var(--danger)}.toast.hidden{opacity:0;pointer-events:none}@media (max-width: 700px){.toolbar-row{flex-direction:column;align-items:stretch}.toolbar-left,.toolbar-right{justify-content:center}.toolbar-row-1 .toolbar-right{flex-wrap:wrap}.btn-row{gap:6px}.btn{font-size:12px;padding:7px 14px}.file-list{grid-template-columns:repeat(auto-fill,minmax(120px,1fr))}.file-card .preview,.file-card .preview-placeholder{height:90px}}