:root{--bg-primary: #1a1b2e;--bg-secondary: #232541;--bg-tertiary: #2a2d4a;--bg-input: #1e2038;--border: #3a3d5c;--text-primary: #e8e9f0;--text-secondary: #a0a3c0;--text-muted: #6b6f8a;--accent: #6c5ce7;--accent-hover: #7d6ff0;--accent-light: rgba(108, 92, 231, .15);--success: #00cec9;--warning: #fdcb6e;--danger: #ff7675;--node-default: #6c5ce7;--scrollbar-bg: #1a1b2e;--scrollbar-thumb: #3a3d5c;--radius: 10px;--radius-sm: 6px;--shadow: 0 4px 24px rgba(0, 0, 0, .3);--transition: .2s ease}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg-primary);color:var(--text-primary);overflow:hidden}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:var(--scrollbar-bg)}::-webkit-scrollbar-thumb{background:var(--scrollbar-thumb);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#4a4d6c}.app-container{display:flex;height:100vh;width:100vw}.sidebar{width:380px;min-width:380px;background:var(--bg-secondary);border-right:1px solid var(--border);display:flex;flex-direction:column;z-index:10}.main-area{flex:1;display:flex;flex-direction:column;position:relative}.app-header{padding:16px 20px;border-bottom:1px solid var(--border);background:var(--bg-secondary)}.app-header h1{font-size:20px;font-weight:700;background:linear-gradient(135deg,var(--accent),var(--success));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.app-header .subtitle{font-size:12px;color:var(--text-muted);margin-top:2px}.toolbar{display:flex;gap:8px;padding:12px 20px;border-bottom:1px solid var(--border);flex-wrap:wrap}.btn{padding:8px 16px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-tertiary);color:var(--text-primary);font-size:13px;cursor:pointer;transition:all var(--transition);display:flex;align-items:center;gap:6px;white-space:nowrap}.btn:hover{background:var(--accent-light);border-color:var(--accent)}.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover)}.btn-danger{border-color:var(--danger);color:var(--danger)}.btn-danger:hover{background:#ff76751a}.btn-sm{padding:4px 10px;font-size:12px}.btn-icon{padding:6px 8px}.search-container{padding:12px 20px;border-bottom:1px solid var(--border)}.search-input{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-input);color:var(--text-primary);font-size:13px;outline:none;transition:border-color var(--transition)}.search-input:focus{border-color:var(--accent)}.search-input::placeholder{color:var(--text-muted)}.search-results{max-height:200px;overflow-y:auto;margin-top:8px}.search-result-item{padding:10px 12px;border-radius:var(--radius-sm);cursor:pointer;transition:background var(--transition);display:flex;align-items:center;gap:8px}.search-result-item:hover{background:var(--accent-light)}.search-result-item .dot{width:8px;height:8px;border-radius:50%;flex-shrink:0}.search-result-item .info{flex:1;min-width:0}.search-result-item .title{font-size:13px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.search-result-item .meta{font-size:11px;color:var(--text-muted);margin-top:2px}.node-list{flex:1;overflow-y:auto;padding:12px 20px}.section-title{font-size:11px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:1px;margin-bottom:12px}.node-card{padding:12px 14px;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:8px;cursor:pointer;transition:all var(--transition);border-left:3px solid transparent}.node-card:hover{border-color:var(--accent);transform:translate(2px)}.node-card.selected{border-color:var(--accent);background:var(--accent-light)}.node-card .card-header{display:flex;align-items:center;gap:8px}.node-card .node-dot{width:10px;height:10px;border-radius:50%;flex-shrink:0}.node-card .node-title{font-size:14px;font-weight:500;flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.node-card .node-meta{font-size:11px;color:var(--text-muted);margin-top:6px;display:flex;gap:12px}.node-card .tags-row{display:flex;gap:4px;flex-wrap:wrap;margin-top:6px}.tag-badge{padding:2px 8px;border-radius:20px;font-size:10px;font-weight:500;color:#fff}.graph-container{flex:1;position:relative;background:radial-gradient(ellipse at center,var(--bg-secondary) 0%,var(--bg-primary) 100%)}.graph-container .vis-network{outline:none}.graph-hint{position:absolute;bottom:20px;left:50%;transform:translate(-50%);background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-sm);padding:8px 16px;font-size:12px;color:var(--text-muted);pointer-events:none;opacity:.7}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;z-index:100;display:flex;align-items:center;justify-content:center;animation:fadeIn .15s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius);width:560px;max-height:80vh;overflow-y:auto;box-shadow:var(--shadow);animation:slideUp .2s ease}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.modal-header{padding:16px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;background:var(--bg-secondary);z-index:1}.modal-header h3{font-size:16px;font-weight:600}.modal-close{background:none;border:none;color:var(--text-muted);font-size:20px;cursor:pointer;padding:4px 8px;border-radius:var(--radius-sm);transition:all var(--transition)}.modal-close:hover{color:var(--text-primary);background:var(--bg-tertiary)}.modal-body{padding:20px}.form-group{margin-bottom:16px}.form-group label{display:block;font-size:13px;font-weight:500;color:var(--text-secondary);margin-bottom:6px}.form-group input,.form-group textarea,.form-group select{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-input);color:var(--text-primary);font-size:13px;font-family:inherit;outline:none;transition:border-color var(--transition)}.form-group input:focus,.form-group textarea:focus,.form-group select:focus{border-color:var(--accent)}.form-group textarea{min-height:160px;resize:vertical;font-family:JetBrains Mono,Fira Code,monospace;line-height:1.6}.form-group .color-picker-row{display:flex;gap:8px;flex-wrap:wrap}.color-dot{width:28px;height:28px;border-radius:50%;cursor:pointer;border:2px solid transparent;transition:all var(--transition)}.color-dot:hover,.color-dot.active{border-color:#fff;transform:scale(1.15)}.form-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:20px;padding-top:16px;border-top:1px solid var(--border)}.markdown-preview{margin-top:12px;padding:12px 14px;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);font-size:13px;line-height:1.7;max-height:200px;overflow-y:auto}.markdown-preview h1{font-size:18px}.markdown-preview h2{font-size:16px}.markdown-preview h3{font-size:14px}.markdown-preview p{margin-bottom:8px}.markdown-preview ul,.markdown-preview ol{padding-left:20px;margin-bottom:8px}.markdown-preview code{background:var(--bg-tertiary);padding:2px 6px;border-radius:4px;font-size:12px}.markdown-preview pre{background:var(--bg-tertiary);padding:12px;border-radius:var(--radius-sm);overflow-x:auto}.markdown-preview blockquote{border-left:3px solid var(--accent);padding-left:12px;color:var(--text-secondary);margin:8px 0}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;color:var(--text-muted);text-align:center;padding:40px;gap:12px}.empty-state .icon{font-size:48px;opacity:.5}.empty-state h3{font-size:16px;color:var(--text-secondary)}.empty-state p{font-size:13px;max-width:300px}.toast-container{position:fixed;top:20px;right:20px;z-index:200;display:flex;flex-direction:column;gap:8px}.toast{padding:12px 18px;border-radius:var(--radius-sm);font-size:13px;font-weight:500;box-shadow:var(--shadow);animation:slideIn .3s ease}.toast.success{background:#0d8043;color:#fff}.toast.error{background:#c0392b;color:#fff}.toast.info{background:var(--accent);color:#fff}@keyframes slideIn{0%{transform:translate(100px);opacity:0}to{transform:translate(0);opacity:1}}.edge-mode-banner{padding:8px 20px;background:var(--warning);color:#1a1b2e;text-align:center;font-size:13px;font-weight:600;display:flex;align-items:center;justify-content:center;gap:10px}.tags-section{padding:12px 20px;border-bottom:1px solid var(--border)}.tags-list{display:flex;flex-wrap:wrap;gap:4px}.tag-chip{padding:3px 10px;border-radius:20px;font-size:11px;cursor:pointer;transition:all var(--transition);display:flex;align-items:center;gap:4px;border:1px solid transparent}.tag-chip:hover{border-color:currentColor}.tag-chip .remove{cursor:pointer;opacity:.6;font-size:14px;line-height:1}.tag-chip .remove:hover{opacity:1}.drop-zone{border:2px dashed var(--border);border-radius:var(--radius);padding:30px;text-align:center;color:var(--text-muted);transition:all var(--transition);margin-top:12px;cursor:pointer}.drop-zone:hover,.drop-zone.drag-over{border-color:var(--accent);background:var(--accent-light);color:var(--accent)}