:root{--bg:#fff;--bg-sidebar:#f7f7f5;--bg-statusbar:#f0f0ee;--text:#1f1f1f;--text-muted:#6b6b6b;--border:#e5e5e2;--border-soft:#efefec;--code-bg:#0000000e;--accent:#2563eb;--accent-bg:#2563eb1a;--danger:#dc2626;font-family:system-ui,-apple-system,Segoe UI,sans-serif}[data-theme=dark]{--bg:#1c1c1c;--bg-sidebar:#161616;--bg-statusbar:#121212;--text:#e8e8e6;--text-muted:#9a9a96;--border:#2c2c2c;--border-soft:#232323;--code-bg:#ffffff14;--accent:#60a5fa;--accent-bg:#60a5fa24;--danger:#f87171}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text)}.app{grid-template-columns:var(--sidebar-w,260px) 1fr;grid-template-rows:1fr auto;grid-template-areas:"sidebar editor""status status";height:100vh;display:grid}.app[data-sidebar=closed]{--sidebar-w:0px}.sidebar{background:var(--bg-sidebar);border-right:1px solid var(--border);flex-direction:column;grid-area:sidebar;display:flex;overflow:hidden}.editor-pane{grid-area:editor;justify-content:center;display:flex;overflow-y:auto}.editor-pane>.editor-root{width:100%;max-width:66.6667vw;padding:32px 24px 96px}.outline{background:color-mix(in srgb, var(--bg-sidebar) 88%, transparent);-webkit-backdrop-filter:blur(8px);border:1px solid var(--border);z-index:10;border-radius:8px;width:220px;padding:12px 8px;font-size:13px;position:fixed;top:24px;bottom:56px;right:24px;overflow-y:auto;box-shadow:0 4px 16px #0000000f}.outline-header{justify-content:space-between;align-items:center;padding-right:4px;display:flex}.outline-title{color:var(--text-muted);text-transform:uppercase;letter-spacing:.06em;padding:4px 8px 8px;font-size:11px}.outline-toggle{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:4px;padding:2px 6px;font-size:12px;line-height:1}.outline-toggle:hover{background:var(--accent-bg);color:var(--text)}.outline-toggle-collapsed{background:color-mix(in srgb, var(--bg-sidebar) 88%, transparent);-webkit-backdrop-filter:blur(8px);border:1px solid var(--border);z-index:10;border-radius:8px;justify-content:center;align-items:center;width:32px;height:32px;font-size:14px;display:flex;position:fixed;top:24px;right:24px;box-shadow:0 4px 16px #0000000f}.outline-list{margin:0;padding:0;list-style:none}.outline-item{cursor:pointer;color:var(--text);text-overflow:ellipsis;white-space:nowrap;border-radius:4px;padding:4px 8px;overflow:hidden}.outline-item:hover{background:var(--accent-bg)}.outline-l1{font-weight:600}.outline-l2{padding-left:20px}.outline-l3{color:var(--text-muted);padding-left:32px}.outline-item-active,.outline-item-active.outline-l3{background:var(--accent-bg);color:var(--accent);font-weight:600}.outline-empty{color:var(--text-muted);padding:8px;font-size:12px}.source-editor{resize:none;width:100%;min-height:calc(100vh - 200px);color:var(--text);white-space:pre-wrap;word-break:break-word;box-sizing:border-box;background:0 0;border:none;outline:none;padding:60px 120px;font-family:ui-monospace,SFMono-Regular,SF Mono,Menlo,Consolas,Liberation Mono,monospace;font-size:14px;line-height:1.65}.statusbar{background:var(--bg-statusbar);border-top:1px solid var(--border);height:32px;color:var(--text-muted);grid-area:status;align-items:center;gap:16px;padding:0 12px;font-size:12px;display:flex}.statusbar .spacer{flex:1}.statusbar button{color:inherit;cursor:pointer;font:inherit;background:0 0;border:none;border-radius:4px;padding:4px 8px}.statusbar button:hover{background:var(--accent-bg)}.mode-switch{border:1px solid var(--border);border-radius:6px;display:inline-flex;overflow:hidden}.mode-switch-btn{color:var(--text-muted);font-size:12px;border-radius:0!important;padding:3px 10px!important}.mode-switch-btn+.mode-switch-btn{border-left:1px solid var(--border)}.mode-switch-btn.selected{background:var(--accent-bg);color:var(--accent)}.mode-switch-btn.selected:hover{background:var(--accent-bg)}.sidebar-actions{padding:12px 12px 6px}.sidebar-actions button{border:1px solid var(--border);background:var(--bg);width:100%;color:var(--text);cursor:pointer;font:inherit;border-radius:6px;padding:8px 10px}.sidebar-actions button:hover{background:var(--accent-bg)}.sidebar-search{padding:6px 12px 12px}.sidebar-search input{border:1px solid var(--border);background:var(--bg);width:100%;color:var(--text);font:inherit;border-radius:6px;padding:6px 8px}.doc-list{flex:1;margin:0;padding:0 6px;list-style:none;overflow-y:auto}.doc-item{cursor:pointer;border-radius:6px;align-items:center;gap:8px;padding:6px 8px;font-size:14px;display:flex}.doc-item:hover{background:var(--accent-bg)}.doc-item.active{background:var(--accent-bg);color:var(--accent)}.doc-title{text-overflow:ellipsis;white-space:nowrap;flex:1;overflow:hidden}.doc-title-input{background:var(--bg);min-width:0;color:var(--text);border:1px solid var(--accent);font:inherit;border-radius:4px;outline:none;flex:1;margin:-3px 0;padding:2px 6px;font-size:14px}.doc-delete{color:var(--text-muted);cursor:pointer;visibility:hidden;background:0 0;border:none;border-radius:4px;padding:0 4px}.doc-item:hover .doc-delete{visibility:visible}.doc-delete:hover{color:var(--danger);background:#dc26261a}.tree-node{list-style:none}.tree-node .doc-list{margin:0;padding:0}.tree-toggle{cursor:pointer;width:16px;color:var(--text-muted);background:0 0;border:none;flex:none;padding:0;font-size:10px;line-height:1}.tree-toggle.invisible{visibility:hidden;cursor:default}.doc-add{cursor:pointer;color:var(--text-muted);visibility:hidden;background:0 0;border:none;border-radius:4px;padding:0 4px}.doc-item:hover .doc-add{visibility:visible}.doc-add:hover{color:var(--accent);background:var(--accent-bg)}.doc-item.drop-into{outline:2px solid var(--accent);outline-offset:-2px}.doc-item.drop-before{box-shadow:inset 0 2px 0 0 var(--accent)}.doc-item.drop-after{box-shadow:inset 0 -2px 0 0 var(--accent)}.app[data-dragover=true]:after{content:"Drop .md to import";border:2px dashed var(--accent);background:var(--accent-bg);color:var(--accent);pointer-events:none;z-index:1000;border-radius:12px;justify-content:center;align-items:center;font-size:18px;display:flex;position:fixed;inset:16px}.doc-empty{color:var(--text-muted);padding:12px;font-size:13px}.qo-backdrop{z-index:1000;background:#00000052;justify-content:center;align-items:flex-start;padding-top:14vh;display:flex;position:fixed;inset:0}.qo{background:var(--bg);border:1px solid var(--border);border-radius:10px;flex-direction:column;width:min(520px,100% - 32px);max-height:60vh;display:flex;overflow:hidden;box-shadow:0 16px 40px #00000038}.qo-input{color:var(--text);font:inherit;border:none;border-bottom:1px solid var(--border-soft);background:0 0;outline:none;padding:14px 16px;font-size:15px}.qo-list{margin:0;padding:4px;list-style:none;overflow-y:auto}.qo-item{cursor:pointer;color:var(--text);text-overflow:ellipsis;white-space:nowrap;border-radius:6px;padding:8px 12px;font-size:14px;overflow:hidden}.qo-item.selected{background:var(--accent-bg);color:var(--accent)}.qo-hl{color:inherit;background:0 0;font-weight:700}.qo-empty{color:var(--text-muted);text-align:center;padding:16px;font-size:13px}.toast{z-index:1100;background:var(--bg);color:var(--text);border:1px solid var(--border);border-radius:8px;align-items:center;gap:12px;max-width:min(520px,100% - 32px);padding:8px 8px 8px 14px;font-size:13px;animation:.16s ease-out toast-in;display:flex;position:fixed;bottom:48px;left:50%;transform:translate(-50%);box-shadow:0 8px 24px #0000002e}@keyframes toast-in{0%{opacity:0;transform:translate(-50%,8px)}to{opacity:1;transform:translate(-50%)}}.toast-msg{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.toast-action{color:var(--accent);cursor:pointer;font:inherit;background:0 0;border:none;border-radius:4px;padding:4px 8px;font-weight:600}.toast-action:hover{background:var(--accent-bg)}.toast-close{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:4px;padding:4px 6px;font-size:12px}.toast-close:hover{background:var(--accent-bg);color:var(--text)}.onboard-card{left:calc(var(--sidebar-w,260px) + 24px);z-index:50;background:var(--bg);border:1px solid var(--border);border-radius:10px;width:320px;padding:16px;font-size:13px;animation:.2s ease-out toast-in;position:fixed;bottom:56px;box-shadow:0 12px 32px #00000029}.onboard-header{justify-content:space-between;align-items:center;margin-bottom:6px;display:flex}.onboard-title{font-size:14px;font-weight:600}.onboard-close{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:4px;padding:2px 6px;font-size:12px}.onboard-close:hover{background:var(--accent-bg);color:var(--text)}.onboard-intro{color:var(--text-muted);margin:0 0 10px;line-height:1.45}.onboard-tips{grid-template-columns:auto 1fr;align-items:center;gap:4px 10px;margin:0 0 10px;padding:0;list-style:none;display:grid}.onboard-tips li{display:contents}.onboard-tips kbd{background:var(--code-bg);border:1px solid var(--border);color:var(--text);white-space:nowrap;border-radius:4px;justify-self:end;padding:2px 6px;font-family:ui-monospace,SFMono-Regular,SF Mono,Menlo,Consolas,monospace;font-size:11px}.onboard-tips span{color:var(--text)}.onboard-hint{color:var(--text-muted);margin:0 0 12px;font-size:12px}.onboard-hint code{background:var(--code-bg);border-radius:3px;padding:1px 5px;font-size:11px}.onboard-cta{border:1px solid var(--border);background:var(--bg);width:100%;color:var(--text);cursor:pointer;font:inherit;border-radius:6px;padding:8px 12px}.onboard-cta:hover{background:var(--accent-bg);color:var(--accent)}