:root{--bg: #1e1e1e;--bg-elev: #252526;--bg-side: #1a1a1a;--line: #2d2d2d;--line-soft: #353535;--text: #d4d4d4;--text-muted: #858585;--text-dim: #6a6a6a;--accent: #4ea1ff;--accent-soft: rgba(78, 161, 255, .15);--danger: #f48771;--warn: #cca700;--ok: #89d185;--row-hover: rgba(255, 255, 255, .04);--row-active: rgba(78, 161, 255, .18);--shadow: 0 8px 24px rgba(0, 0, 0, .5);--radius: 6px;--mono: ui-monospace, SFMono-Regular, "JetBrains Mono", Menlo, Consolas, monospace;--sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", sans-serif}@media (prefers-color-scheme: light){:root{--bg: #ffffff;--bg-elev: #f7f7f7;--bg-side: #f0f0f0;--line: #e5e5e5;--line-soft: #ececec;--text: #1f1f1f;--text-muted: #5a5a5a;--text-dim: #8a8a8a;--row-hover: rgba(0, 0, 0, .04);--row-active: rgba(78, 161, 255, .15);--shadow: 0 4px 12px rgba(0, 0, 0, .08)}}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text);font-family:var(--sans);font-size:13px;-webkit-font-smoothing:antialiased;overflow:hidden}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}button{font:inherit;color:inherit;background:var(--bg-elev);border:1px solid var(--line);border-radius:var(--radius);padding:6px 12px;cursor:pointer;transition:background .12s,border-color .12s}button:hover{background:var(--line-soft)}button:disabled{opacity:.5;cursor:not-allowed}button.primary{background:var(--accent);color:#fff;border-color:var(--accent)}button.primary:hover{filter:brightness(1.1)}button.danger{color:var(--danger)}button.danger:hover{background:#f487711f}input[type=password],input[type=text]{font:inherit;color:inherit;background:var(--bg-elev);border:1px solid var(--line);border-radius:var(--radius);padding:8px 10px;outline:none;transition:border-color .12s}input:focus{border-color:var(--accent)}.titlebar{height:38px;display:flex;align-items:center;padding:0 12px;background:var(--bg-side);border-bottom:1px solid var(--line);gap:12px;-webkit-app-region:drag;user-select:none}.titlebar .brand{font-weight:600;letter-spacing:.3px}.titlebar .breadcrumb{flex:1;font-family:var(--mono);color:var(--text-muted);font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.titlebar .breadcrumb .seg{cursor:pointer}.titlebar .breadcrumb .seg:hover{color:var(--text)}.titlebar .actions{display:flex;gap:8px;align-items:center;flex-shrink:0}.tools-menu{position:relative}.tools-popover{position:absolute;top:calc(100% + 4px);right:0;z-index:50;min-width:148px;display:grid;gap:4px;padding:4px;background:var(--bg-elev);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.tools-popover button{width:100%;text-align:left;background:transparent;border:0}.search-box{position:relative;display:flex;align-items:center;width:220px}.search-box .search-icon{position:absolute;left:8px;color:var(--text-dim);pointer-events:none;font-size:13px}.search-box input{width:100%;padding:5px 26px;font-size:12px;background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);font-family:var(--mono)}.search-box input:focus{border-color:var(--accent);outline:none}.search-box .search-clear{position:absolute;right:4px;padding:0 6px;background:transparent;border:0;color:var(--text-dim);cursor:pointer;font-size:14px}.search-box .search-clear:hover{color:var(--text)}.workspace{display:grid;grid-template-columns:280px 1fr;height:calc(100% - 60px)}.sidebar{background:var(--bg-side);border-right:1px solid var(--line);overflow:auto}.main{display:grid;grid-template-rows:1fr;overflow:hidden}.main.with-preview{grid-template-columns:1fr 1fr}.tree{padding:8px 0;font-family:var(--mono);font-size:12.5px}.tree .node{display:flex;align-items:center;padding:3px 12px 3px 8px;cursor:pointer;white-space:nowrap;user-select:none}.tree .node:hover{background:var(--row-hover)}.tree .node.active{background:var(--row-active);color:var(--text)}.tree .node.drag-over,.list .row.drag-over,.grid .cell.drag-over{outline:2px solid var(--accent);outline-offset:-2px;background:var(--accent-soft)}.list .row[draggable=true]:active,.grid .cell[draggable=true]:active{opacity:.6}.tree .node .icon{width:16px;text-align:center;margin-right:4px;opacity:.85}.tree .node .caret{width:12px;color:var(--text-dim)}.list{overflow:auto;padding:4px 0}.list .row{display:grid;grid-template-columns:24px 1fr 110px 160px 28px;align-items:center;padding:5px 12px;cursor:default;border-bottom:1px solid var(--line-soft);font-size:12.5px}.list .row:hover{background:var(--row-hover)}.list .row.active{background:var(--row-active)}.list .row .icon{opacity:.85}.list .row .name{font-family:var(--mono)}.list .row .name .dim{color:var(--text-dim)}.list .row .size,.list .row .modified{color:var(--text-muted);font-variant-numeric:tabular-nums}.list .row .menu{opacity:0;text-align:right;color:var(--text-muted);display:inline-flex;gap:4px;justify-content:flex-end}.list .row:hover .menu{opacity:1}.list .row .menu .menu-btn{cursor:pointer;padding:0 4px;border-radius:3px}.list .row .menu .menu-btn:hover{background:var(--line-soft);color:var(--text)}.grid{overflow:auto;padding:12px;display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:12px;align-content:start}.grid .cell{position:relative;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg-elev);padding:8px;cursor:pointer;display:flex;flex-direction:column;gap:4px;overflow:hidden;transition:border-color .12s,background .12s}.grid .cell:hover{border-color:var(--accent)}.grid .cell.active{border-color:var(--accent);background:var(--row-active)}.grid .cell.folder .thumb{font-size:36px;color:var(--accent)}.grid .cell .thumb{height:96px;display:grid;place-items:center;background:var(--bg);border-radius:4px;overflow:hidden}.grid .cell .thumb img{width:100%;height:100%;object-fit:cover}.grid .cell .name{font-family:var(--mono);font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.grid .cell .meta{color:var(--text-dim);font-size:11px;font-variant-numeric:tabular-nums}.grid .cell .cell-menu{position:absolute;top:4px;right:4px;display:inline-flex;gap:2px;opacity:0}.grid .cell:hover .cell-menu{opacity:1}.grid .cell .cell-menu button{padding:0 6px;font-size:11px;background:#0000008c;color:#fff;border:0;border-radius:3px}.grid-empty{grid-column:1 / -1;text-align:center;padding:36px;color:var(--text-dim)}.seg-btn{display:inline-flex;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.seg-btn button{border:0;border-radius:0;padding:5px 10px;background:transparent}.seg-btn button.active{background:var(--accent);color:#fff}.seg-btn button+button{border-left:1px solid var(--line)}.preview{border-left:1px solid var(--line);background:var(--bg-elev);overflow:auto;display:flex;flex-direction:column}.preview-head{padding:10px 14px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:10px}.preview-head .meta{font-family:var(--mono);font-size:11.5px;color:var(--text-muted);overflow:hidden;text-overflow:ellipsis}.preview-body{flex:1;overflow:auto;display:flex;align-items:center;justify-content:center;padding:12px}.preview-body img,.preview-body video{max-width:100%;max-height:100%;border-radius:var(--radius);box-shadow:var(--shadow)}.preview-body iframe{width:100%;height:100%;border:0;background:#fff;border-radius:var(--radius)}.preview-body pre{width:100%;height:100%;margin:0;padding:12px;font-family:var(--mono);font-size:12px;background:var(--bg);border-radius:var(--radius);white-space:pre-wrap;overflow:auto}.preview-body .empty{color:var(--text-dim);font-style:italic}.statusbar{height:22px;display:flex;align-items:center;padding:0 12px;background:var(--accent);color:#fff;font-size:11.5px;font-family:var(--mono);gap:16px}.statusbar.idle{background:var(--bg-side);color:var(--text-muted);border-top:1px solid var(--line)}.toast{position:fixed;right:16px;bottom:34px;z-index:200;max-width:min(420px,calc(100vw - 32px));padding:9px 12px;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg-elev);color:var(--text);box-shadow:var(--shadow);font-size:12px}.toast.ok{border-color:#89d1858c}.toast.error{border-color:#f48771b3;color:var(--danger)}.login{display:grid;place-items:center;height:100vh;background:var(--bg)}.login .card{width:320px;padding:32px;background:var(--bg-elev);border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow)}.login h1{margin:0 0 6px;font-size:18px}.login p{margin:0 0 20px;color:var(--text-muted);font-size:12px}.login .field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}.login .field label{font-size:11.5px;color:var(--text-muted)}.login .err{color:var(--danger);font-size:12px;margin-bottom:10px}.dropzone{position:absolute;inset:0;background:#4ea1ff2e;border:2px dashed var(--accent);display:grid;place-items:center;font-size:16px;color:var(--accent);pointer-events:none;z-index:10}.spinner{display:inline-block;width:12px;height:12px;border:2px solid var(--line);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media (max-width: 900px){.search-box{width:160px}.workspace{grid-template-columns:220px 1fr}.statusbar span:last-child{display:none}}@media (max-width: 700px){.titlebar{gap:6px;padding:0 8px}.titlebar .brand,.search-box{display:none}.titlebar .actions{gap:4px}.titlebar .actions button,.seg-btn button{padding:5px 8px}.workspace{grid-template-columns:1fr}.sidebar{display:none}.main.with-preview{grid-template-columns:1fr}.preview{position:fixed;inset:38px 0 22px;z-index:20}}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--line-soft);border-radius:5px}::-webkit-scrollbar-thumb:hover{background:var(--text-dim)}