:root{--bg-base: #0f172a;--bg-surface-1: #1e293b;--bg-surface-2: #334155;--bg-surface-3: #475569;--text-primary: #f8fafc;--text-secondary: #cbd5e1;--text-tertiary: #94a3b8;--text-inverse: #0f172a;--primary: #8b5cf6;--primary-hover: #7c3aed;--primary-light: rgba(139, 92, 246, .15);--accent: #38bdf8;--success: #10b981;--success-bg: rgba(16, 185, 129, .15);--warning: #f59e0b;--warning-bg: rgba(245, 158, 11, .15);--error: #ef4444;--error-bg: rgba(239, 68, 68, .15);--border-color: rgba(148, 163, 184, .1);--border-hover: rgba(148, 163, 184, .2);--space-xs: .25rem;--space-sm: .5rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--space-2xl: 3rem;--sidebar-width: 260px;--context-panel-width: 320px;--header-height: 64px;--border-radius-sm: 8px;--border-radius: 16px;--border-radius-lg: 24px;--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", sans-serif;--font-serif: "Merriweather", "Georgia", serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.5rem;--font-size-2xl: 2rem;--line-height-normal: 1.5;--line-height-relaxed: 1.7;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .3);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .4);--transition: all .2s cubic-bezier(.4, 0, .2, 1)}:root{--main-bg: var(--bg-base);--sidebar-bg: var(--bg-surface-1);--card-bg: var(--bg-surface-1);--panel-bg: var(--bg-surface-1);--accent-color: var(--primary);--primary-color: var(--primary)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background:var(--bg-base);color:var(--text-primary);line-height:var(--line-height-normal);-webkit-font-smoothing:antialiased}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--bg-surface-2);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--bg-surface-3)}:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:block;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}body{margin:0;font-family:var(--font-family);background-color:var(--bg-base);color:var(--text-primary);-webkit-font-smoothing:antialiased;background-image:radial-gradient(circle at 15% 15%,rgba(139,92,246,.08) 0%,transparent 40%),radial-gradient(circle at 85% 85%,rgba(56,189,248,.08) 0%,transparent 40%);min-height:100vh}#root{width:100%;margin:0;padding:0}h1,h2,h3,h4,h5,h6{font-weight:700;letter-spacing:-.025em;color:var(--text-primary)}.container{display:flex;flex-direction:column;gap:2rem}.card{background:var(--bg-surface-1);border:1px solid var(--border-color);border-radius:var(--border-radius);padding:1.5rem;box-shadow:var(--shadow-sm);transition:var(--transition)}.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--border-hover)}.input-group{display:flex;gap:1rem}input[type=text],.edit-input,textarea,.edit-textarea{flex:1;background:var(--bg-surface-2);border:2px solid transparent;color:var(--text-primary);padding:.75rem 1rem;border-radius:var(--border-radius-sm);font-size:.95rem;font-family:inherit;transition:var(--transition)}input[type=text]:focus,.edit-input:focus,textarea:focus,.edit-textarea:focus{outline:none;background:var(--bg-surface-2);border-color:var(--primary);box-shadow:0 0 0 4px var(--primary-light)}input::placeholder{color:var(--text-tertiary)}button{background:var(--primary);color:#fff;border:none;padding:.6rem 1.25rem;border-radius:9999px;font-weight:600;font-size:.9rem;letter-spacing:.01em;cursor:pointer;transition:var(--transition);display:inline-flex;align-items:center;justify-content:center;gap:.5rem;box-shadow:0 2px 4px #0003}button:hover{background:var(--primary-hover);transform:translateY(-1px);box-shadow:0 4px 6px #0000004d}button:active{transform:translateY(0)}button:disabled{opacity:.6;cursor:not-allowed;transform:none}.dashboard{display:grid;grid-template-columns:300px 1fr;gap:2rem;height:calc(100vh - 200px)}@media (max-width: 768px){.dashboard{grid-template-columns:1fr;height:auto;gap:1rem}.chunk-list{max-height:250px;border-bottom:1px solid var(--border-color);padding-bottom:1rem}}.chunk-list{overflow-y:auto;padding-right:.5rem;display:flex;flex-direction:column;gap:.5rem}.chunk-item{padding:.75rem 1rem;background:transparent;border-radius:var(--border-radius-sm);border:1px solid transparent;cursor:pointer;transition:var(--transition);display:flex;justify-content:space-between;align-items:center;color:var(--text-secondary)}.chunk-item:hover{background:var(--bg-surface-2);color:var(--text-primary)}.chunk-item.active{background:var(--primary-light);color:var(--primary);font-weight:600}.chunk-status{width:8px;height:8px;border-radius:50%}.status-pending{background-color:var(--text-tertiary)}.status-processing{background-color:var(--warning);box-shadow:0 0 8px var(--warning-bg);animation:pulse 1.5s infinite}.status-done{background-color:var(--success);box-shadow:0 0 8px var(--success-bg)}@keyframes pulse{0%{opacity:.6}50%{opacity:1}to{opacity:.6}}.content-area{overflow-y:auto;position:relative}.note-card.editing{background:var(--bg-surface-1);border:1px solid var(--primary);box-shadow:0 0 0 2px var(--primary-light)}.btn-small{padding:.4rem .8rem;font-size:.8rem;min-height:unset}.sidebar{background:var(--bg-surface-1);border-right:1px solid var(--border-color);display:flex;flex-direction:column;height:100vh;overflow-y:auto}.sidebar-header{padding:var(--space-lg) var(--space-md)}.sidebar-title{font-size:var(--font-size-lg);font-weight:700;color:var(--text-primary);cursor:pointer;display:flex;align-items:center;gap:var(--space-sm);padding:0 var(--space-sm)}.sidebar-title:hover{color:var(--primary)}.sidebar-content{flex:1;padding:0 var(--space-md)}.sidebar-section{margin-bottom:var(--space-lg)}.sidebar-section-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-xs) var(--space-sm);cursor:pointer;color:var(--text-tertiary);font-size:var(--font-size-xs);font-weight:600;text-transform:uppercase;letter-spacing:.05em;-webkit-user-select:none;user-select:none;margin-bottom:var(--space-xs)}.sidebar-section-header:hover{color:var(--text-secondary)}.sidebar-section-title{display:flex;align-items:center;gap:var(--space-sm)}.sidebar-section-content{display:flex;flex-direction:column;gap:2px}.sidebar-section.collapsed .sidebar-section-content{display:none}.sidebar-item{padding:.6rem .75rem;margin:1px 0;border-radius:var(--border-radius-sm);cursor:pointer;display:flex;align-items:center;gap:var(--space-sm);color:var(--text-secondary);font-size:var(--font-size-sm);font-weight:500;transition:var(--transition)}.sidebar-item:hover{background:var(--bg-surface-2);color:var(--text-primary);transform:translate(4px)}.sidebar-item.active{background:var(--primary);color:var(--text-primary);box-shadow:var(--shadow-sm)}.sidebar-item-icon{width:18px;height:18px;flex-shrink:0;opacity:.8}.sidebar-item.active .sidebar-item-icon{opacity:1}.sidebar-item-text{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sidebar-item-badge{background:var(--bg-surface-3);color:var(--text-primary);font-size:.7rem;padding:2px 8px;border-radius:12px;font-weight:600}.sidebar-item.active .sidebar-item-badge{background:#fff3;color:#fff}.sidebar-footer{padding:var(--space-lg) var(--space-md);font-size:var(--font-size-xs);color:var(--text-tertiary);text-align:center;opacity:.5}.context-panel{background:var(--panel-bg);border-left:1px solid var(--border-color);display:flex;flex-direction:column;height:100vh;overflow-y:auto}.context-panel-header{padding:var(--space-md);border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between}.context-panel-title{font-size:var(--font-size-sm);color:var(--text-secondary);font-weight:600;text-transform:uppercase;letter-spacing:.05em}.context-panel-close{background:transparent;border:none;color:var(--text-secondary);padding:var(--space-xs);cursor:pointer;border-radius:var(--border-radius)}.context-panel-close:hover{background:#ffffff0d;color:var(--text-primary)}.context-panel-content{flex:1;padding:var(--space-md)}.context-panel-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;color:var(--text-tertiary);text-align:center;padding:var(--space-xl)}.context-panel-empty-icon{margin-bottom:var(--space-md);opacity:.3}.context-panel-empty-text{font-size:var(--font-size-sm);line-height:var(--line-height-relaxed)}.layout{display:grid;grid-template-columns:var(--sidebar-width) 1fr var(--context-panel-width);height:100vh;overflow:hidden}.layout.context-panel-hidden{grid-template-columns:var(--sidebar-width) 1fr}.mobile-header,.mobile-menu-toggle,.mobile-sidebar-overlay{display:none}@media (max-width: 1024px){.layout{grid-template-columns:var(--sidebar-width) 1fr}.layout .context-panel{display:none}}@media (max-width: 768px){.layout{display:block;position:relative;height:100vh;overflow:hidden}.mobile-header{display:flex;align-items:center;gap:1rem;position:fixed;top:0;left:0;right:0;height:var(--header-height);background:#0f172acc;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border-color);z-index:2000;padding:0 1rem}.mobile-menu-toggle{display:flex;align-items:center;justify-content:center;background:transparent;border:none;padding:0;color:var(--text-primary);width:32px;height:32px;box-shadow:none}.mobile-brand{font-size:1.1rem;font-weight:700;color:var(--text-primary)}.sidebar-container{position:fixed;top:0;left:-280px;width:280px;height:100%;background:var( --bg-base );z-index:2001;transition:transform .3s cubic-bezier(.4,0,.2,1);box-shadow:var(--shadow-lg)}.sidebar-container.mobile-visible{transform:translate(280px)}.mobile-sidebar-overlay{display:block;position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;z-index:900;animation:fadeIn .3s}.main-content{height:100%;padding-top:60px}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.note-view{padding:var(--space-xl);width:100%;height:100vh;overflow-y:auto}.note-view-header{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:var(--space-lg);padding-bottom:var(--space-md)}.note-view-title-section{flex:1}.note-view-title{font-size:var(--font-size-xl);font-weight:600;color:var(--text-primary);line-height:var(--line-height-tight);margin-bottom:var(--space-sm);border:none;background:transparent;width:100%;padding:var(--space-xs);border-radius:var(--border-radius)}.note-view-title:not(input){cursor:text}.note-view-title:hover:not(input){background:#ffffff05}.note-view-title input{border:1px solid var(--accent-color);background:var(--card-bg)}.note-view-meta{display:flex;gap:var(--space-md);align-items:center;font-size:var(--font-size-sm);color:var(--text-secondary);margin-top:var(--space-sm)}.note-view-source-link{color:var(--accent-color);text-decoration:none;cursor:pointer}.note-view-source-link:hover{text-decoration:underline}.note-view-actions{display:flex;gap:var(--space-sm)}.note-view-btn{padding:var(--space-sm) var(--space-md);border-radius:var(--border-radius);border:1px solid var(--border-color);background:var(--card-bg);color:var(--text-primary);font-size:var(--font-size-sm);cursor:pointer;display:flex;align-items:center;gap:var(--space-xs);transition:all var(--transition-fast)}.note-view-btn:hover{background:#ffffff0d;border-color:var(--border-hover)}.note-view-btn.primary{background:var(--accent-color);border-color:var(--accent-color)}.note-view-btn.primary:hover{background:var(--accent-hover)}.note-view-btn:disabled{opacity:.5;cursor:not-allowed}.note-view-content{margin-bottom:var(--space-xl)}.note-view-content textarea{width:100%;min-height:calc(100vh - 300px);padding:var(--space-xl);background:transparent;border:none;border-radius:0;color:var(--text-primary);font-size:16px;line-height:1.7;font-family:Inter,system-ui,sans-serif;resize:none;box-shadow:none}.note-view-content textarea:focus{outline:none;background:transparent}.note-view-markdown{font-size:var(--font-size-base);line-height:var(--line-height-relaxed);color:var(--text-primary)}.note-view-markdown h1,.note-view-markdown h2,.note-view-markdown h3{margin-top:var(--space-lg);margin-bottom:var(--space-md);color:var(--text-primary)}.note-view-markdown 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input:focus{outline:none;border-color:var(--accent-color)}.note-view-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;height:60vh;color:var(--text-tertiary);text-align:center}.note-view-empty-icon{margin-bottom:var(--space-md);opacity:.3}.graph-view{height:100vh;display:flex;flex-direction:column;background:var(--main-bg)}.graph-view-header{padding:var(--space-lg) var(--space-xl);border-bottom:1px solid var(--border-color);background:var(--sidebar-bg)}.graph-view-title{font-size:var(--font-size-lg);font-weight:600;color:var(--text-primary);margin-bottom:var(--space-md)}.graph-view-filters{display:flex;gap:var(--space-md);align-items:center;flex-wrap:wrap}.graph-view-filter{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm) 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0;color:var(--text-secondary)}.graph-view-legend-color{width:12px;height:12px;border-radius:50%}.graph-view-stats{position:absolute;bottom:var(--space-md);left:var(--space-md);background:var(--card-bg);padding:var(--space-sm) var(--space-md);border-radius:var(--border-radius);border:1px solid var(--border-color);font-size:var(--font-size-xs);color:var(--text-tertiary);display:flex;gap:var(--space-md)}.graph-view-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;color:var(--text-tertiary);text-align:center;padding:var(--space-xl)}.graph-view-empty-icon{margin-bottom:var(--space-md);opacity:.3}.folder-view{padding:var(--space-xl);width:100%;height:100vh;overflow-y:auto}.folder-view-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-xl);padding-bottom:var(--space-lg);border-bottom:1px solid var(--border-color)}.folder-view-title{font-size:var(--font-size-xl);font-weight:600;color:var(--text-primary)}.folder-view-action-btn{padding:var(--space-sm) var(--space-lg);background:var(--accent-color);color:#fff;border:none;border-radius:var(--border-radius);font-size:var(--font-size-sm);font-weight:500;cursor:pointer;display:flex;align-items:center;gap:var(--space-sm);transition:all var(--transition-fast)}.folder-view-action-btn:hover{background:var(--accent-hover)}.folder-view-action-btn:disabled{opacity:.5;cursor:not-allowed}.folder-view-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;height:60vh;color:var(--text-tertiary);text-align:center}.folder-view-empty-icon{margin-bottom:var(--space-md);opacity:.3}.folder-view-empty-text{font-size:var(--font-size-base);line-height:var(--line-height-relaxed);margin-bottom:var(--space-lg)}.folder-list{display:flex;flex-direction:column;gap:var(--space-lg)}.folder-card{background:var(--card-bg);border:1px solid var(--border-color);border-radius:var(--border-radius);padding:var(--space-lg);transition:all var(--transition-fast)}.folder-card:hover{border-color:var(--border-hover);box-shadow:var(--shadow-md)}.folder-card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-md)}.folder-card-title{font-size:var(--font-size-lg);font-weight:600;color:var(--text-primary);display:flex;align-items:center;gap:var(--space-sm)}.folder-card-count{background:#6366f126;color:var(--accent-color);padding:var(--space-xs) var(--space-sm);border-radius:12px;font-size:var(--font-size-xs);font-weight:600}.folder-card-notes{display:grid;gap:var(--space-sm)}.folder-note-item{padding:var(--space-sm) var(--space-md);background:#ffffff05;border-radius:var(--border-radius);cursor:pointer;transition:all var(--transition-fast);display:flex;align-items:center;gap:var(--space-sm)}.folder-note-item:hover{background:#ffffff0d;transform:translate(4px)}.folder-note-icon{color:var(--text-tertiary);flex-shrink:0}.folder-note-title{color:var(--text-secondary);font-size:var(--font-size-sm);flex:1}.main-content{background:var(--main-bg);height:100vh;overflow-y:auto}.main-content-empty{display:flex;align-items:center;justify-content:center;height:100%;color:var(--text-tertiary);font-size:var(--font-size-base)}.markdown-content{max-width:65ch;margin:0 auto;padding:var(--space-lg) 0;font-family:var(--font-serif);color:var(--text-primary);line-height:var(--line-height-relaxed);font-size:1.125rem}.markdown-content h1,.markdown-content h2,.markdown-content h3,.markdown-content h4,.markdown-content h5,.markdown-content h6{font-family:var(--font-family);color:var(--text-primary);margin-top:2em;margin-bottom:.75em;line-height:var(--line-height-tight);font-weight:700}.markdown-content h1{font-size:2.25rem}.markdown-content h2{font-size:1.875rem;border-bottom:1px solid var(--border-color);padding-bottom:.3em}.markdown-content h3{font-size:1.5rem}.markdown-content h4{font-size:1.25rem}.markdown-content p{margin-bottom:1.5em}.markdown-content ul,.markdown-content ol{margin-bottom:1.5em;padding-left:1.5em}.markdown-content li{margin-bottom:.5em}.markdown-content li>p{margin-bottom:.5em}.markdown-content blockquote{border-left:4px solid var(--accent-color);margin-left:0;margin-right:0;margin-bottom:1.5em;font-style:italic;color:var(--text-secondary);background:#6366f10d;padding:1em;border-radius:0 4px 4px 0}.markdown-content code{font-family:var(--font-mono);background:#ffffff1a;padding:.2em .4em;border-radius:4px;font-size:.9em;color:var(--accent-color)}.markdown-content pre{background:var(--card-bg);padding:1em;border-radius:8px;overflow-x:auto;margin-bottom:1.5em;border:1px solid var(--border-color)}.markdown-content pre code{background:none;padding:0;color:inherit;font-size:.9em}.markdown-content strong{font-weight:600;color:var(--text-primary)}.markdown-content a{color:var(--accent-color);text-decoration:none;border-bottom:1px solid transparent}.markdown-content a:hover{border-bottom-color:var(--accent-color)}.markdown-content hr{border:none;border-top:1px solid var(--border-color);margin:3em 0}.book-dashboard{gap:1rem}.dashboard-tabs{display:inline-flex;background:var(--bg-surface-2);padding:.25rem;border-radius:9999px;border:1px solid var(--border-color);margin-bottom:1.5rem;overflow-x:auto;gap:0}.tab-btn{background:transparent;border:none;padding:.5rem 1.25rem;font-size:.9rem;color:var(--text-secondary);white-space:nowrap;border-radius:9999px;font-weight:500;cursor:pointer;transition:all .2s cubic-bezier(.4,0,.2,1)}.tab-btn:hover{color:var(--text-primary);background:#ffffff0d}.tab-btn.active{background:var(--primary);color:#fff;box-shadow:0 2px 4px #0000001a;font-weight:600}@media (max-width: 600px){.dashboard-tabs{gap:.5rem}.tab-btn{padding:.5rem .75rem;font-size:.85rem}}