@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;600;700;800&family=DM+Sans:wght@300;400;500;600;700&family=Montserrat:wght@400;500;600;700;800;900&display=swap";:root{--color-primary: #6C63FF;--color-primary-light: #8B85FF;--color-primary-dark: #4A42D6;--color-accent: #FF6B6B;--color-accent-2: #4ECDC4;--color-accent-3: #FFD93D;--bg-app: #0F0F1A;--bg-surface: #1A1A2E;--bg-elevated: #252540;--bg-card: #1E1E35;--bg-hover: #2A2A48;--bg-active: #2E2E55;--border-subtle: rgba(255,255,255,.06);--border-default: rgba(255,255,255,.12);--border-focus: var(--color-primary);--text-primary: #F0F0FF;--text-secondary: #A0A0C0;--text-muted: #606080;--text-inverse: #0F0F1A;--shadow-sm: 0 2px 8px rgba(0,0,0,.4);--shadow-md: 0 4px 20px rgba(0,0,0,.5);--shadow-lg: 0 8px 40px rgba(0,0,0,.6);--shadow-glow: 0 0 24px rgba(108,99,255,.35);--glass-bg-surface: rgba(20, 20, 35, .95);--glass-bg-dropdown: rgba(20, 20, 35, 1);--glass-bg-card: rgba(25, 25, 45, .95);--glass-bg-elevated: rgba(35, 35, 60, .98);--glass-border: rgba(255, 255, 255, .14);--glass-border-subtle: rgba(255, 255, 255, .08);--glass-blur: blur(20px);--glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, .4);--modal-overlay-bg: rgba(0, 0, 0, .35);--radius-sm: 6px;--radius-md: 12px;--radius-lg: 20px;--radius-xl: 28px;--radius-full: 9999px;--font-ui: "Inter", system-ui, sans-serif;--font-display: "Montserrat", "Inter", system-ui, sans-serif;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--space-10: 40px;--space-12: 48px;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-normal: .25s cubic-bezier(.4, 0, .2, 1);--transition-slow: .4s cubic-bezier(.4, 0, .2, 1);--sidebar-width: 280px;--header-height: 72px}html.light-mode{--font-ui: "DM Sans", system-ui, sans-serif;--font-display: "DM Sans", system-ui, sans-serif;--color-primary: #1A73E8;--color-primary-light: #4A90E2;--color-primary-dark: #1557B0;--bg-app: #FFFFFF;--bg-surface: #FFFFFF;--bg-elevated: #FFFFFF;--bg-card: #FFFFFF;--bg-hover: #F1F3F4;--bg-active: #E8F0FE;--glass-bg-surface: rgba(255, 255, 255, .95);--glass-bg-dropdown: rgba(255, 255, 255, 1);--glass-bg-card: rgba(255, 255, 255, .98);--glass-bg-elevated: rgba(245, 247, 250, .95);--glass-border: rgba(15, 23, 42, .16);--glass-border-subtle: rgba(15, 23, 42, .08);--glass-blur: blur(20px);--glass-shadow: 0 8px 32px 0 rgba(15, 23, 42, .06);--modal-overlay-bg: rgba(15, 23, 42, .08);--border-subtle: #E8EAED;--border-default: #DADCE0;--text-primary: #202124;--text-secondary: #5F6368;--text-muted: #80868B;--text-inverse: #FFFFFF;--shadow-sm: 0 1px 2px rgba(60,64,67,.3), 0 1px 3px rgba(60,64,67,.15);--shadow-md: 0 2px 6px rgba(60,64,67,.15), 0 4px 12px rgba(60,64,67,.1);--shadow-lg: 0 4px 12px rgba(60,64,67,.15), 0 8px 24px rgba(60,64,67,.1);--shadow-glow: 0 0 0 3px rgba(26,115,232,.2);--radius-sm: 4px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 28px}html.light-mode body{font-family:DM Sans,system-ui,sans-serif}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth}body{font-family:var(--font-ui);background:radial-gradient(ellipse at 50% -10%,#0d1520,#0b0b14 40%,#07070f);color:var(--text-primary);line-height:1.6;min-height:100vh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow:hidden;position:relative}body:before{content:"";position:absolute;top:-10%;right:-10%;width:50vw;height:50vw;background:radial-gradient(circle,#6c63ff0f,#6c63ff00 70%);pointer-events:none;z-index:0}body:after{content:"";position:absolute;bottom:-10%;left:-10%;width:60vw;height:60vw;background:radial-gradient(circle,#4ecdc40a,#4ecdc400 70%);pointer-events:none;z-index:0}html.light-mode body{background:radial-gradient(circle at 50% 50%,#f7f9fa,#eef1f3)}html.light-mode body:before{background:radial-gradient(circle,#1a73e808,#1a73e800 70%)}html.light-mode body:after{background:radial-gradient(circle,#4ecdc405,#4ecdc400 70%)}#root{height:100vh;display:flex;flex-direction:column}a{color:inherit;text-decoration:none}button{cursor:pointer;font-family:var(--font-ui)}input,textarea{font-family:var(--font-ui)}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-default);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--color-primary)}.app-shell{display:flex;height:100vh;overflow:hidden}.main-content{flex:1;display:flex;flex-direction:column;overflow:hidden;margin-left:var(--sidebar-width);transition:margin-left var(--transition-normal)}.main-content.sidebar-collapsed{margin-left:0}.glass{background:#1a1a2ecc;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid var(--border-subtle)}html.light-mode .glass{background:#ffffffd9}.display-lg{font-family:var(--font-display);font-size:2.5rem;font-weight:800}.display-md{font-family:var(--font-display);font-size:1.75rem;font-weight:700}.display-sm{font-family:var(--font-display);font-size:1.25rem;font-weight:600}.text-lg{font-size:1.125rem}.text-sm{font-size:.875rem}.text-xs{font-size:.75rem}.text-muted{color:var(--text-muted)}.text-secondary{color:var(--text-secondary)}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-2{gap:var(--space-2)}.gap-3{gap:var(--space-3)}.gap-4{gap:var(--space-4)}.w-full{width:100%}.truncate{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.hide-scrollbar::-webkit-scrollbar{display:none}.hide-scrollbar{-ms-overflow-style:none;scrollbar-width:none}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-6px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}@keyframes slideInRight{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:translate(0)}}@keyframes slideInLeft{0%{opacity:0;transform:translate(-20px)}to{opacity:1;transform:translate(0)}}@keyframes scaleIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.6}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes shimmer{0%{background-position:-200% center}to{background-position:200% center}}.animate-fade-in{animation:fadeIn var(--transition-normal) ease both}.animate-slide-right{animation:slideInRight var(--transition-normal) ease both}.animate-scale-in{animation:scaleIn var(--transition-fast) ease both}.animate-spin{animation:spin 1s linear infinite}@keyframes glow-pulse{0%,to{text-shadow:0 0 2px currentColor;opacity:1}50%{text-shadow:0 0 6px currentColor;opacity:.85}}.animate-glow-pulse{animation:glow-pulse 3s ease-in-out infinite}.gradient-text,.text-gradient-premium{background:linear-gradient(135deg,var(--color-primary),var(--color-accent-2));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.mindmap-wrapper{flex:1;overflow:hidden;position:relative;background:var(--bg-app);background-image:radial-gradient(circle at 20% 20%,rgba(108,99,255,.08) 0%,transparent 50%),radial-gradient(circle at 80% 80%,rgba(78,205,196,.06) 0%,transparent 50%)}html.light-mode .mindmap-wrapper{background-image:none}.mindmap-canvas{width:100%;height:100%;position:relative;overflow:hidden;cursor:grab}.mindmap-canvas:active{cursor:grabbing}.mindmap-inner{position:absolute;transform-origin:0 0;will-change:transform}.topic-node{position:absolute;width:200px;-webkit-user-select:none;user-select:none}.topic-node-inner{background:var(--glass-bg-card);border:1px solid var(--glass-border);border-radius:var(--radius-lg);padding:var(--space-3) var(--space-4);cursor:pointer;transition:all var(--transition-fast);position:relative;overflow:hidden;backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);box-shadow:0 4px 15px #0003}.topic-node-inner:before{content:"";position:absolute;top:0;left:0;width:4px;height:100%;background:var(--node-color, var(--color-primary));border-radius:var(--radius-sm) 0 0 var(--radius-sm)}.topic-node-inner:hover{border-color:var(--node-color, var(--color-primary));box-shadow:0 0 15px #6c63ff40,var(--glass-shadow);transform:translateY(-2px)}.topic-node-inner.selected{border-color:var(--node-color, var(--color-primary));box-shadow:0 0 20px #6c63ff59,var(--glass-shadow);background:var(--glass-bg-elevated)}.topic-node-inner.dragging{opacity:.5;cursor:grabbing}.topic-node-title{font-size:.875rem;font-weight:600;color:var(--text-primary);line-height:1.3;padding-left:var(--space-2)}.topic-node-meta{display:flex;align-items:center;gap:var(--space-2);margin-top:var(--space-1);padding-left:var(--space-2)}.topic-node-badge{font-size:.7rem;color:var(--text-muted);background:var(--bg-hover);padding:2px 6px;border-radius:var(--radius-full)}.topic-node-actions{display:none;position:absolute;top:var(--space-2);right:var(--space-2);gap:var(--space-1)}.topic-node-inner:hover .topic-node-actions{display:flex}.node-action-btn{width:48px;height:48px;border-radius:var(--radius-md);border:1px solid var(--glass-border);background:var(--glass-bg-elevated);color:var(--text-secondary);display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast);flex-shrink:0;cursor:pointer;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}.node-action-btn:hover{background:#ffffff0d;border-color:#fff3;color:var(--color-primary)!important;transform:scale(1.05)}html.light-mode .node-action-btn:hover{background:#00000008;border-color:#0000001f}.expand-toggle{width:20px;height:20px;border-radius:var(--radius-full);border:1px solid var(--glass-border);background:var(--glass-bg-elevated);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);color:var(--text-secondary);display:flex;align-items:center;justify-content:center;position:absolute;bottom:-10px;left:50%;transform:translate(-50%);transition:all var(--transition-fast);z-index:10;font-size:10px;cursor:pointer}.expand-toggle:hover{border-color:var(--color-primary);color:var(--color-primary);background:var(--glass-bg-elevated)}.connections-svg{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;overflow:visible}.connection-path{fill:none;stroke:var(--border-default);stroke-width:2;transition:stroke var(--transition-fast)}.connection-path:hover,.connection-path.highlighted{stroke:var(--color-primary);stroke-width:2.5}.tree-list-view{flex:1;overflow-y:auto;padding:var(--space-4)}.tree-list-root{list-style:none}.tree-list-item{animation:fadeIn var(--transition-fast) ease both}.tree-list-row{display:flex;align-items:center;gap:var(--space-2);padding:var(--space-3) var(--space-3);border-radius:var(--radius-md);cursor:pointer;position:relative;transition:all var(--transition-fast);-webkit-user-select:none;user-select:none;min-height:56px}.tree-list-row:hover{background:var(--bg-hover)}.tree-list-row.selected{background:var(--bg-active)}.tree-list-row:hover .tree-row-actions{display:flex}.tree-row-indent{display:flex;align-items:center;flex-shrink:0}.tree-row-line{width:20px;height:2px;background:var(--border-subtle);border-radius:1px}.tree-row-dot{width:8px;height:8px;border-radius:var(--radius-full);background:var(--node-color, var(--color-primary));flex-shrink:0}.tree-row-title{flex:1;font-size:1rem;font-weight:500;color:var(--text-primary);truncate:true;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tree-row-actions{display:none;align-items:center;gap:var(--space-1)}.tree-row-actions .node-action-btn{width:48px;height:48px}.view-toggle{display:flex;background:var(--glass-bg-elevated);border:1px solid var(--glass-border);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border-radius:var(--radius-md);padding:4px;gap:4px;box-shadow:var(--glass-shadow)}.view-toggle-btn{display:flex;align-items:center;gap:var(--space-2);padding:var(--space-3) var(--space-5);border-radius:8px;border:none;background:transparent;color:var(--text-secondary);font-size:1rem;font-weight:500;transition:all var(--transition-fast)}.view-toggle-btn.active{background:linear-gradient(135deg,var(--color-primary),var(--color-primary-dark));border:1px solid rgba(255,255,255,.1);color:#fff;box-shadow:0 4px 10px #6c63ff40}.view-toggle-btn:hover:not(.active){background:#ffffff0d;color:var(--text-primary)}.zoom-controls{position:absolute;bottom:var(--space-6);right:var(--space-6);display:flex;flex-direction:column;gap:var(--space-1);background:var(--glass-bg-surface);border:1px solid var(--glass-border);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border-radius:var(--radius-md);padding:var(--space-1);box-shadow:var(--glass-shadow);z-index:50}.zoom-btn{width:48px;height:48px;border:none;background:transparent;color:var(--text-secondary);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast);font-size:1.25rem;font-weight:600}.zoom-btn:hover{background:#ffffff0d;color:var(--color-primary)}.zoom-label{font-size:.8rem;color:var(--text-muted);text-align:center;padding:4px;font-weight:500}.drag-overlay{background:var(--bg-elevated);border:2px solid var(--color-primary);border-radius:var(--radius-lg);padding:var(--space-3) var(--space-4);box-shadow:var(--shadow-glow);opacity:.9;cursor:grabbing;transform:rotate(2deg);min-width:140px}.drop-target-highlight{outline:2px dashed var(--color-primary);outline-offset:4px;border-radius:var(--radius-md);background:#6c63ff14}.btn{display:inline-flex;align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-5);border-radius:var(--radius-md);border:1px solid transparent;font-size:.95rem;font-weight:500;cursor:pointer;transition:all var(--transition-fast);white-space:nowrap;position:relative;overflow:hidden;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}.btn:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:#fff0;transition:background var(--transition-fast);pointer-events:none}.btn:active:after{background:#ffffff1a}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn-primary{background:linear-gradient(135deg,var(--color-accent-2),var(--color-primary));color:#fff;box-shadow:0 0 30px #4ecdc433,0 4px 15px #6c63ff4d;border:none}.btn-primary:hover:not(:disabled){box-shadow:0 0 50px #4ecdc466,0 8px 24px #6c63ff80;transform:translateY(-2px) scale(1.02)}.btn-primary:disabled{box-shadow:none}.btn-secondary{background:var(--glass-bg-elevated);color:var(--text-primary);border:1px solid var(--glass-border);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur)}.btn-secondary:hover{background:#ffffff0d;border-color:#fff3;transform:translateY(-1px)}html.light-mode .btn-secondary:hover{background:#00000008;border-color:#00000026}.btn-ghost{background:transparent;color:var(--text-secondary);border:1px solid transparent}.btn-ghost:hover{background:var(--glass-bg-elevated);border-color:var(--glass-border);color:var(--text-primary)}.btn-danger{background:#ff6b6b1a;color:var(--color-accent);border:1px solid rgba(255,107,107,.2)}.btn-danger:hover{background:var(--color-accent);color:#fff;box-shadow:0 4px 15px #ff6b6b4d;transform:translateY(-1px)}.btn-sm{padding:6px var(--space-3);font-size:.85rem}.btn-lg{padding:var(--space-3) var(--space-6);font-size:1rem}.btn-icon{width:40px;height:40px;padding:0;border-radius:var(--radius-md);justify-content:center}.btn-icon.btn-sm{width:32px;height:32px;border-radius:var(--radius-sm)}.input-group{display:flex;flex-direction:column;gap:var(--space-2)}.input-label{font-size:.8rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em}.input{width:100%;padding:var(--space-3) var(--space-4);background:var(--glass-bg-elevated);border:1px solid var(--glass-border);border-radius:var(--radius-md);color:var(--text-primary);font-size:.9rem;transition:all var(--transition-fast);outline:none;backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur)}.input:focus{border-color:var(--color-primary-light);box-shadow:0 0 12px #6c63ff40}.input::placeholder{color:var(--text-muted)}.textarea{resize:vertical;min-height:80px}.select{-webkit-appearance:none;-moz-appearance:none;appearance:none;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23A0A0C0' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right var(--space-3) center;padding-right:var(--space-8)}.sidebar{width:var(--sidebar-width);height:100vh;background:var(--glass-bg-surface);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border-right:1px solid var(--glass-border);box-shadow:var(--glass-shadow);display:flex;flex-direction:column;position:fixed;left:0;top:0;z-index:100;transition:transform var(--transition-normal);overflow:hidden}.sidebar.collapsed{transform:translate(calc(-1 * var(--sidebar-width)))}.sidebar-resizer:hover,.sidebar-resizer:active{background-color:var(--color-primary)!important;opacity:.8}.sidebar-logo{height:var(--header-height);padding:0 var(--space-5);border-bottom:1px solid var(--glass-border);display:flex;align-items:center;gap:var(--space-3);flex-shrink:0}.sidebar-logo-icon{display:flex;align-items:center;justify-content:center;color:#a0d8ef;flex-shrink:0}.sidebar-logo-text{font-family:var(--font-display);font-size:1.4rem;font-weight:700;letter-spacing:-.2px;color:#a0d8ef;text-shadow:0 0 15px rgba(160,216,239,.4)}html.light-mode .sidebar-logo-text{background:linear-gradient(90deg,#0f172a,#2563eb);-webkit-background-clip:text;-webkit-text-fill-color:transparent;text-shadow:none}.sidebar-section{padding:var(--space-4) var(--space-3);flex:1;overflow-y:auto}.sidebar-section-title{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);padding:0 var(--space-2);margin-bottom:var(--space-2)}.sidebar-item{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-2) var(--space-3);border:1px solid transparent;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);color:var(--text-secondary);font-size:.875rem;font-weight:500;position:relative}.sidebar-item:hover{background:#ffffff0a;color:var(--text-primary)}html.light-mode .sidebar-item:hover{background:#00000008}.sidebar-item.active{background:#6c63ff1f;border-color:#6c63ff66;box-shadow:inset 0 0 15px #6c63ff26;color:#fff;font-weight:600}html.light-mode .sidebar-item.active{background:#1a73e814;border-color:#1a73e826;color:var(--color-primary)}.sidebar-footer{padding:var(--space-4);border-top:1px solid var(--border-subtle);display:flex;align-items:center;gap:var(--space-3)}.header{height:var(--header-height);background:var(--glass-bg-surface);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border-bottom:1px solid var(--glass-border);box-shadow:var(--glass-shadow);display:flex;align-items:center;padding:0 var(--space-6);gap:var(--space-4);flex-shrink:0;z-index:50}.header-breadcrumb{display:flex;align-items:center;gap:var(--space-2);flex:1;overflow:hidden}.breadcrumb-item{font-size:.875rem;color:var(--text-secondary);white-space:nowrap;cursor:pointer;transition:color var(--transition-fast)}.breadcrumb-item:hover{color:var(--color-primary)}.breadcrumb-item.active{color:var(--text-primary);font-weight:600;cursor:default}.breadcrumb-sep{color:var(--text-muted);font-size:.75rem}.header-actions{display:flex;align-items:center;gap:var(--space-2);flex-shrink:0}.search-container{position:relative;width:100%}.search-input{width:100%;padding:var(--space-2) var(--space-3) var(--space-2) 40px;background:var(--glass-bg-elevated);border:1px solid var(--glass-border);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border-radius:var(--radius-full);color:var(--text-primary);font-size:.875rem;outline:none;transition:all var(--transition-fast)}.search-input:focus{border-color:var(--color-primary-light);box-shadow:0 0 12px #6c63ff33;background:var(--glass-bg-elevated)}.search-icon{position:absolute;left:var(--space-3);top:50%;transform:translateY(-50%);color:var(--text-muted);pointer-events:none}.search-results{position:absolute;top:calc(100% + var(--space-2));left:0;right:0;background:var(--bg-card);border:1px solid var(--border-default);border-radius:var(--radius-md);box-shadow:var(--glass-shadow);max-height:320px;overflow-y:auto;z-index:200;animation:scaleIn var(--transition-fast) ease both}.search-result-item{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-4);cursor:pointer;transition:background var(--transition-fast)}.search-result-item:hover{background:var(--bg-hover)}.search-result-path{font-size:.75rem;color:var(--text-muted)}.material-panel{width:380px;min-width:280px;max-width:720px;height:100%;background:var(--glass-bg-surface);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border-left:1px solid var(--glass-border);box-shadow:-10px 0 60px #6c63ff1f,var(--glass-shadow);display:flex;flex-direction:column;position:absolute;right:0;top:0;z-index:80;animation:slideInRight var(--transition-normal) ease both;overflow:hidden}.material-panel-header{padding:var(--space-5) var(--space-5);border-bottom:1px solid var(--border-subtle);display:flex;flex-direction:column;gap:var(--space-2)}.material-panel-title{font-family:var(--font-display);font-size:1.1rem;font-weight:700;color:var(--text-primary)}.material-panel-close{position:absolute;top:var(--space-4);right:var(--space-4)}.material-panel-body{flex:1;overflow-y:auto;padding:var(--space-4);display:flex;flex-direction:column;gap:var(--space-3)}.material-card{background:var(--glass-bg-card);border:1px solid var(--glass-border);border-left:4px solid var(--mat-color);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border-radius:var(--radius-md);padding:var(--space-4);transition:all var(--transition-fast);position:relative;box-shadow:inset 0 1px 1px #ffffff26,0 4px 15px #0000001a,0 8px 30px color-mix(in srgb,var(--mat-color) 15%,transparent);animation:fadeIn var(--transition-fast) ease both}html.light-mode .material-card{box-shadow:inset 0 1px 2px #ffffffbf,0 4px 15px #0000000f,0 8px 30px color-mix(in srgb,var(--mat-color) 25%,transparent)}.material-card:before{display:none}.material-card:hover{border:1px solid rgba(255,255,255,.25);border-left:4px solid var(--mat-color);transform:translateY(-2px);box-shadow:inset 0 1px 1px #ffffff4d,0 8px 32px color-mix(in srgb,var(--mat-color) 25%,transparent),var(--glass-shadow)}html.light-mode .material-card:hover{border:1px solid rgba(0,0,0,.14);border-left:4px solid var(--mat-color);box-shadow:inset 0 1px 2px #ffffffd9,0 8px 32px color-mix(in srgb,var(--mat-color) 30%,transparent),var(--glass-shadow)}.material-card-header{display:flex;align-items:flex-start;gap:var(--space-3)}.material-icon{width:36px;height:36px;border-radius:var(--radius-sm);background:var(--bg-elevated);display:flex;align-items:center;justify-content:center;font-size:1.1rem;flex-shrink:0}.material-info{flex:1;overflow:hidden}.material-title{font-size:.875rem;font-weight:600;color:var(--text-primary);margin-bottom:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.material-type-badge{font-size:.7rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--mat-color, var(--color-primary));background:#6c63ff1a;padding:2px 6px;border-radius:var(--radius-full);display:inline-block}.material-desc{font-size:.8rem;color:var(--text-muted);margin-top:var(--space-2)}.material-url{font-size:.75rem;color:var(--color-primary);margin-top:var(--space-2);display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;transition:color var(--transition-fast)}.material-url:hover{color:var(--color-primary-light)}.material-card-actions{display:flex;gap:var(--space-1);margin-top:var(--space-3);justify-content:flex-end}.add-material-form{background:var(--bg-card);border:1px dashed var(--border-default);border-radius:var(--radius-md);padding:var(--space-4);display:flex;flex-direction:column;gap:var(--space-3);animation:fadeIn var(--transition-fast) ease both}.add-material-form.hidden{display:none}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--modal-overlay-bg);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);z-index:1000;display:flex;align-items:center;justify-content:center;animation:fadeIn var(--transition-fast) ease both}.modal{background:var(--glass-bg-surface);border:1px solid var(--glass-border);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border-radius:var(--radius-xl);padding:var(--space-6);width:90%;max-width:520px;max-height:85vh;overflow:hidden;display:flex;flex-direction:column;box-shadow:inset 0 1px 1px #ffffff26,0 0 80px #6c63ff26,var(--glass-shadow),0 20px 50px #0006;animation:scaleIn var(--transition-fast) ease both;position:relative}html.light-mode .modal{box-shadow:inset 0 1px 2px #fffc,var(--glass-shadow),0 20px 50px #00000014}.modal-title{font-family:var(--font-display);font-size:1.2rem;font-weight:700;margin-bottom:var(--space-4);color:var(--text-primary)}.modal-actions{display:flex;gap:var(--space-3);margin-top:var(--space-6);justify-content:flex-end}.move-to-tree{max-height:300px;overflow-y:auto;border:1px solid var(--border-subtle);border-radius:var(--radius-md);background:var(--bg-app)}.move-to-item{display:flex;align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-3);cursor:pointer;border-radius:var(--radius-sm);transition:background var(--transition-fast);font-size:.875rem}.move-to-item:hover{background:var(--bg-hover)}.move-to-item.selected{background:#6c63ff26;color:var(--color-primary)}.move-to-item.disabled{opacity:.4;cursor:not-allowed}.notes-editor{width:100%;min-height:120px;background:transparent;border:none;color:var(--text-primary);font-size:.875rem;line-height:1.8;resize:none;outline:none;font-family:var(--font-ui);padding:var(--space-2)}.notes-editor::placeholder{color:var(--text-muted)}.toast-container{position:fixed;bottom:var(--space-6);left:50%;transform:translate(-50%);z-index:2000;display:flex;flex-direction:column;gap:var(--space-2);align-items:center}.toast{background:var(--glass-bg-elevated);border:1px solid var(--glass-border);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border-radius:var(--radius-md);padding:var(--space-3) var(--space-5);font-size:.875rem;box-shadow:var(--glass-shadow);animation:fadeIn var(--transition-fast) ease both;display:flex;align-items:center;gap:var(--space-3);white-space:nowrap}.toast.success{border-color:#4ecdc480;color:var(--color-accent-2)}.toast.error{border-color:#ff6b6b80;color:var(--color-accent)}.skeleton{background:linear-gradient(90deg,var(--bg-elevated) 25%,var(--bg-hover) 50%,var(--bg-elevated) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:var(--radius-md)}.color-swatches{display:flex;gap:var(--space-2);flex-wrap:wrap}.color-swatch{width:28px;height:28px;border-radius:var(--radius-full);cursor:pointer;border:2px solid transparent;transition:all var(--transition-fast);flex-shrink:0}.color-swatch:hover{transform:scale(1.2)}.color-swatch.selected{border-color:#fff;box-shadow:0 0 0 2px var(--color-primary)}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-4);padding:var(--space-10);text-align:center;color:var(--text-muted)}.empty-state-icon{font-size:3rem;opacity:.5}.empty-state-title{font-family:var(--font-display);font-size:1.1rem;font-weight:600;color:var(--text-secondary)}@media (max-width: 1024px){:root{--sidebar-width: 260px}.sidebar{transform:translate(calc(-1 * var(--sidebar-width)))}.sidebar.open{transform:translate(0)}.main-content{margin-left:0!important}.material-panel{width:100%}.header{padding:var(--space-2) var(--space-4);min-height:var(--header-height);height:auto;flex-wrap:wrap}.header-search-wrapper{order:3;min-width:100%!important;margin-top:var(--space-2)}.modal.modal-large{max-width:100vw!important;width:100vw!important;height:100vh!important;max-height:100vh!important;border-radius:0!important;margin:0!important}.hide-on-mobile{display:none!important}}.level1-accordion{background:var(--glass-bg-surface)!important;border:1px solid var(--glass-border)!important;backdrop-filter:var(--glass-blur)!important;-webkit-backdrop-filter:var(--glass-blur)!important;box-shadow:inset 0 1px 1px #ffffff26,var(--glass-shadow)!important;transition:all var(--transition-fast)!important}html.light-mode .level1-accordion{box-shadow:inset 0 1px 2px #ffffffbf,var(--glass-shadow)!important}.level1-accordion:hover{border-color:#6c63ff40!important;box-shadow:inset 0 1px 1px #fff3,0 4px 20px #6c63ff1f,var(--glass-shadow)!important}html.light-mode .level1-accordion:hover{border-color:#1a73e833!important;box-shadow:inset 0 1px 2px #fffc,0 4px 20px #1a73e814,var(--glass-shadow)!important}.level2-card{background:var(--glass-bg-card)!important;border:1px solid var(--glass-border)!important;backdrop-filter:var(--glass-blur)!important;-webkit-backdrop-filter:var(--glass-blur)!important;box-shadow:inset 0 1px 1px #ffffff1a,0 4px 12px #0000001a!important;transition:all var(--transition-fast)!important}html.light-mode .level2-card{box-shadow:inset 0 1px 2px #ffffffa6,0 4px 12px #00000008!important}.level2-card:hover{border-color:#6c63ff33!important;box-shadow:inset 0 1px 1px #ffffff26,0 4px 16px #6c63ff14!important}html.light-mode .level2-card:hover{border-color:#1a73e826!important;box-shadow:inset 0 1px 2px #ffffffb3,0 4px 16px #1a73e80a!important}.selected-accordion{border-color:var(--color-primary)!important;box-shadow:inset 0 1px 1px #ffffff26,0 0 15px #6c63ff40,var(--glass-shadow)!important;background:#6c63ff0a!important}html.light-mode .selected-accordion{box-shadow:inset 0 1px 2px #ffffffb3,0 0 15px #1a73e826,var(--glass-shadow)!important;background:#1a73e808!important}.selected-accordion-sub{background:#6c63ff0d!important;border-color:var(--color-primary)!important;box-shadow:inset 0 1px 1px #ffffff1a,0 0 12px #6c63ff26!important}html.light-mode .selected-accordion-sub{background:#1a73e808!important;box-shadow:inset 0 1px 2px #fff9,0 0 12px #1a73e814!important}.syllabus-hover-actions{opacity:0;transition:opacity var(--transition-fast) ease}div:hover>.syllabus-hover-actions{opacity:1}.syllabus-bullet-actions{opacity:0;transition:opacity var(--transition-fast) ease}.syllabus-bullet-item:hover .syllabus-bullet-actions{opacity:1}.syllabus-bullet-item:hover{background:var(--bg-hover)!important}.draft-row-actions{opacity:0;transition:opacity var(--transition-fast) ease}.draft-editor-row:hover .draft-row-actions{opacity:1}.modal.modal-large{max-width:80vw;width:80vw;height:80vh;max-height:80vh;display:flex;flex-direction:column}.splitter-bar:hover .splitter-line,.splitter-bar:active .splitter-line{background-color:var(--color-primary)!important}.feedback-fab{position:fixed;bottom:24px;right:24px;background:linear-gradient(135deg,var(--color-accent-2),var(--color-primary));color:#fff;border:none;border-radius:var(--radius-full);padding:10px 18px;display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:.9rem;box-shadow:0 4px 15px #6c63ff4d;cursor:pointer;z-index:1000;transition:all var(--transition-fast) ease}.feedback-fab:hover{transform:translateY(-2px) scale(1.05);box-shadow:0 6px 20px #6c63ff66}.feedback-fab-text{max-width:0;overflow:hidden;white-space:nowrap;transition:max-width var(--transition-normal) ease}.feedback-fab:hover .feedback-fab-text{max-width:100px}.feedback-modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:1001;display:flex;align-items:flex-end;justify-content:right;padding:24px}.feedback-modal{width:400px;max-width:100%;background:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--radius-lg);box-shadow:0 10px 30px #00000040;display:flex;flex-direction:column;overflow:hidden;animation:feedbackSlideInUp .3s ease}@keyframes feedbackSlideInUp{0%{transform:translateY(100px);opacity:0}to{transform:translateY(0);opacity:1}}.feedback-modal-header{padding:16px;border-bottom:1px solid var(--border-default);display:flex;justify-content:space-between;align-items:center}.feedback-close-btn{background:transparent;border:none;color:var(--text-secondary);cursor:pointer;padding:4px;border-radius:var(--radius-sm);display:flex}.feedback-close-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.feedback-form{padding:16px;display:flex;flex-direction:column;gap:12px}.feedback-input{width:100%;background:var(--bg-elevated);border:1px solid var(--border-default);border-radius:var(--radius-md);padding:8px 12px;color:var(--text-primary);font-size:.9rem;outline:none;transition:border-color var(--transition-fast) ease}.feedback-input:focus{border-color:var(--color-primary)}.feedback-textarea{resize:vertical}.feedback-error{background:#ff6b6b1a;border:1px solid var(--color-accent);color:var(--color-accent);border-radius:var(--radius-md);padding:8px 12px;font-size:.85rem}.feedback-success-state{padding:32px 16px;display:flex;flex-direction:column;align-items:center}.beta-banner{background:linear-gradient(90deg,#6c63ff14,#4ecdc414);border-bottom:1px solid var(--border-default);color:var(--text-primary);padding:6px 16px;font-size:.85rem;font-weight:500;text-align:center;display:flex;justify-content:center;align-items:center;gap:8px;z-index:99}.beta-banner.with-sidebar{padding-left:calc(var(--sidebar-width, 260px) / 2)}@media (max-width: 1024px){.beta-banner.with-sidebar{padding-left:16px}}.beta-badge{background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-accent) 100%);color:#fff;font-size:.62rem;font-weight:800;padding:3px 8px;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--radius-full);text-transform:uppercase;letter-spacing:.6px;margin-left:8px;align-self:center;box-shadow:0 0 10px #6c63ff66;animation:beta-flag-pulse 2s infinite ease-in-out}@keyframes beta-flag-pulse{0%{box-shadow:0 0 #6c63ff80,0 0 10px #6c63ff66;transform:scale(1)}50%{box-shadow:0 0 0 5px #ff6b6b00,0 0 15px #ff6b6b99;transform:scale(1.04)}to{box-shadow:0 0 #6c63ff00,0 0 10px #6c63ff66;transform:scale(1)}}.admin-table{width:100%;border-collapse:collapse;margin-top:16px;font-size:.9rem;background:var(--bg-surface);border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border-default)}.admin-table th,.admin-table td{padding:12px;text-align:left;border-bottom:1px solid var(--border-default)}.admin-table th{background:var(--bg-elevated);font-weight:600;color:var(--text-secondary)}.admin-badge{font-size:.75rem;font-weight:600;padding:2px 8px;border-radius:var(--radius-full);text-transform:capitalize;display:inline-block}.admin-badge-bug{background:#ff6b6b26;color:#ff6b6b}.admin-badge-feature{background:#4ecdc426;color:#4ecdc4}.admin-badge-feedback{background:#6c63ff26;color:#6c63ff}.admin-badge-open{background:#ffa50026;color:orange}.admin-badge-in-progress{background:#1e90ff26;color:#1e90ff}.admin-badge-resolved{background:#2e8b5726;color:#2e8b57}.mobile-warning-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0b0b14cc;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);display:flex;align-items:center;justify-content:center;z-index:10000;padding:24px}.mobile-warning-card{background:#161626e6;border:1px solid rgba(255,255,255,.1);border-radius:24px;padding:36px 28px;max-width:420px;width:100%;text-align:center;box-shadow:0 24px 48px #0009;animation:mobileModalFadeIn .3s cubic-bezier(.16,1,.3,1)}@keyframes mobileModalFadeIn{0%{opacity:0;transform:scale(.92) translateY(10px)}to{opacity:1;transform:scale(1) translateY(0)}}