:root{color-scheme:dark;--bg: #0f1218;--panel: #161b24;--border: #232a36;--text: #e6e9ef;--muted: #8b94a7;--accent: #7aa2ff}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text)}button{font:inherit;cursor:pointer}.ghost{background:none;border:none;color:var(--muted);padding:2px 6px;border-radius:4px}.ghost:hover{color:var(--text);background:var(--border)}.login{display:grid;place-items:center;min-height:100vh}.login-card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:32px;width:340px;display:flex;flex-direction:column;gap:12px}.login-card h1{margin:0;font-size:20px}.login-card p{margin:0;color:var(--muted);font-size:14px}.login-card input{font:inherit;padding:10px 12px;border-radius:8px;border:1px solid var(--border);background:var(--bg);color:var(--text)}.login-card button{padding:10px;border-radius:8px;border:none;background:var(--accent);color:#0b0e14;font-weight:600}.error{color:#f7768e}.layout{display:flex;min-height:100vh}.sidebar{width:260px;flex-shrink:0;border-right:1px solid var(--border);background:var(--panel);display:flex;flex-direction:column}.brand{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;font-weight:600;border-bottom:1px solid var(--border)}.content{flex:1;min-width:0}.empty{display:grid;place-items:center;height:100%;color:var(--muted)}.tree{padding:8px 4px;overflow-y:auto;flex:1}.tree-row{display:flex;align-items:center;gap:2px;padding:3px 6px;border-radius:6px;font-size:14px}.tree-row:hover{background:var(--border)}.tree-row.active{background:#1d2634;color:var(--accent)}.tree-title{flex:1;cursor:pointer;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;padding:2px 0}.caret{width:20px;font-size:10px}.tree-actions{visibility:hidden}.tree-row:hover .tree-actions{visibility:visible}.add-root{margin:10px;padding:8px;width:calc(100% - 20px);border-radius:8px;border:1px dashed var(--border);background:none;color:var(--muted)}.add-root:hover{color:var(--text);border-color:var(--muted)}.editor{max-width:860px;margin:0 auto;padding:28px 40px 80px}.editor-bar{display:flex;align-items:center;gap:12px;margin-bottom:18px}.title{flex:1;font-size:26px;font-weight:700;background:none;border:none;color:var(--text);outline:none;min-width:0}.save-state{color:var(--muted);font-size:12px;white-space:nowrap}.md{width:100%;min-height:60vh;background:none;border:none;outline:none;resize:none;color:var(--text);font:14px/1.6 ui-monospace,SF Mono,Menlo,monospace;unicode-bidi:plaintext}.preview{line-height:1.65;font-size:15px}.preview h1,.preview h2,.preview h3{border-bottom:1px solid var(--border);padding-bottom:4px}.preview code{background:var(--border);padding:1px 6px;border-radius:4px;font-size:13px}.preview pre{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:12px;overflow-x:auto}.preview pre code{background:none;padding:0}.preview blockquote{border-left:3px solid var(--accent);margin-left:0;padding-left:14px;color:var(--muted)}.preview a{color:var(--accent)}.preview img{max-width:100%}.todo-editor{position:relative;font-size:14.5px}.todo-toolbar{position:absolute;top:-44px;right:44px}.todo-menu{position:absolute;right:0;background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:4px;z-index:30}.todo-menu button{display:block;width:100%;text-align:left;background:none;border:none;color:var(--text);padding:6px 12px;border-radius:5px;white-space:nowrap}.todo-menu button:hover{background:var(--border)}.todo-row{position:relative;display:flex;align-items:center;gap:8px;padding:2px 84px 2px 0;border-radius:5px;min-height:26px;cursor:text}.todo-row:hover{background:#141926}.todo-row.rtl .hover-actions{right:auto;left:0}.todo-row.dragging{opacity:.35}.todo-row.drop-before{box-shadow:0 -2px 0 0 var(--accent)}.todo-row.drop-after{box-shadow:0 2px 0 0 var(--accent)}.todo-row.blank{min-height:14px}.todo-row.heading{margin-top:10px;font-weight:700}.todo-row.h1{font-size:19px}.todo-row.h2{font-size:15.5px;color:var(--muted)}.todo-row.h3{font-size:14px;color:var(--muted);font-weight:600}.todo-row.plain{color:#c3cadb}.circle{flex-shrink:0;width:17px;height:17px;border-radius:50%;border:1.5px solid #4a5468;background:none;color:#0b0e14;font-size:11px;line-height:1;display:inline-flex;align-items:center;justify-content:center;padding:0}.circle.done{background:#9ece6a;border-color:#9ece6a}.circle.cancelled{background:#f7768e;border-color:#f7768e}.task-text{display:inline-flex;align-items:center;gap:6px;min-width:0}.task-text.struck .line-text{text-decoration:line-through;color:var(--muted)}.line-text{unicode-bidi:plaintext;word-break:break-word}.line-text code{background:var(--border);border-radius:4px;padding:0 5px;font-size:12.5px}.hover-actions{position:absolute;right:0;top:50%;transform:translateY(-50%);display:none;background:var(--panel);border-radius:6px}.todo-row:hover .hover-actions{display:inline-flex}.todo-input{flex:1;background:none;border:none;outline:none;resize:none;color:var(--text);font:inherit;padding:0;margin:0;overflow:hidden;unicode-bidi:plaintext}.todo-tail{height:120px;cursor:text}.chip{font-size:10px;font-weight:700;letter-spacing:.4px;padding:1px 7px;border-radius:6px;border:1px solid;flex-shrink:0}.select-overlay{position:absolute;top:-6px;right:-6px;bottom:-6px;left:-6px;background:#7aa2ff26;border-radius:8px;pointer-events:none;z-index:5}.picker-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:20}.color-popover{position:absolute;left:0;top:100%;z-index:25;background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:10px}.color-popover.up{top:auto;bottom:100%}.no-color{display:block;background:none;border:none;color:var(--muted);margin-bottom:8px;padding:2px 4px;font-size:12px}.no-color:hover{color:var(--text)}.dots{display:grid;grid-template-columns:repeat(6,22px);gap:8px}.dots.inline{position:absolute;right:40px;top:100%;z-index:25;background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:8px}.dot{width:18px;height:18px;border-radius:50%;border:none;padding:0}.chip-editor-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;z-index:40;display:grid;place-items:center}.chip-editor{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:18px;width:360px;max-height:80vh;overflow-y:auto}.chip-editor-head{display:flex;align-items:center;gap:10px;margin-bottom:12px}.chip-editor-head .muted{color:var(--muted);font-size:12px;flex:1}.chip-row{position:relative;display:flex;align-items:center;gap:8px;padding:5px 0}.chip-row input{flex:1;background:var(--bg);border:1px solid var(--border);color:var(--text);border-radius:6px;padding:6px 10px;font:inherit;text-transform:uppercase}.restore{margin-top:12px;width:100%;background:none;border:1px dashed var(--border);color:var(--muted);border-radius:8px;padding:7px}.restore:hover{color:var(--text)}