*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #0f172a;--bg-surface: #1e293b;--bg-elevated: #334155;--border: #475569;--border-light: #334155;--text: #f1f5f9;--text-muted: #94a3b8;--text-dim: #64748b;--primary: #3b82f6;--primary-hover: #2563eb;--primary-muted: rgba(59, 130, 246, .15);--danger: #ef4444;--danger-hover: #dc2626;--success: #22c55e;--warning: #f59e0b;--radius: 8px;--radius-sm: 6px;--shadow: 0 4px 24px rgba(0,0,0,.3);--transition: .15s ease}html,body{height:100%;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg);color:var(--text);overflow:hidden}#toolbar{display:flex;align-items:center;justify-content:space-between;height:56px;padding:0 20px;background:var(--bg-surface);border-bottom:1px solid var(--border-light);z-index:100}.toolbar-brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:15px;color:var(--text)}.toolbar-brand svg{color:var(--primary)}.toolbar-app-name{font-weight:700;font-size:15px}.toolbar-divider{color:var(--border);font-weight:300;font-size:18px;margin:0 2px}.graph-title-display{font-weight:500;font-size:14px;color:var(--text-muted);max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;cursor:pointer;transition:color var(--transition)}.graph-title-display:hover{color:var(--text)}.toolbar-actions{display:flex;gap:8px}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;font-family:inherit;font-size:13px;font-weight:500;border:1px solid transparent;border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition);white-space:nowrap}.btn:disabled{opacity:.4;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-hover)}.btn-save-all{background:var(--bg-elevated);color:var(--text-muted);border-color:var(--border);transition:all .2s ease}.btn-save-all:disabled{opacity:.4;cursor:not-allowed}.btn-save-all.has-changes{background:#16a34a;color:#fff;border-color:#16a34a;animation:pulse-save 2s ease-in-out infinite}.btn-save-all.has-changes:hover{background:#15803d}@keyframes pulse-save{0%,to{box-shadow:0 0 #16a34a66}50%{box-shadow:0 0 0 6px #16a34a00}}#btn-hide-dead-ends.active{background:#b45309;color:#fff;border-color:#b45309}#btn-hide-dead-ends.active:hover{background:#92400e}.btn-secondary{background:var(--bg-elevated);color:var(--text);border-color:var(--border)}.btn-secondary:hover:not(:disabled){background:var(--border)}.btn-danger{background:transparent;color:var(--danger);border-color:var(--danger)}.btn-danger:hover:not(:disabled){background:var(--danger);color:#fff}.btn-ghost{background:transparent;color:var(--text-muted);border:1px solid var(--border)}.btn-ghost:hover{background:var(--bg-elevated);color:var(--text)}.btn-full{width:100%;justify-content:center}.btn-sm{padding:6px 12px;font-size:12px}.btn-icon{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;background:none;border:none;color:var(--text-muted);cursor:pointer;border-radius:var(--radius-sm);transition:all var(--transition)}.btn-icon:hover{background:var(--bg-elevated);color:var(--text)}#main{display:flex;height:calc(100vh - 56px);position:relative}#network-container{flex:1;position:relative;background:var(--bg)}#panel{position:relative;width:340px;min-width:340px;background:var(--bg-surface);border-left:1px solid var(--border-light);display:flex;flex-direction:column;transition:width var(--transition),min-width var(--transition);overflow:hidden}#panel.panel-collapsed{width:0;min-width:0;border-left:none}#panel.panel-collapsed #panel-content{display:none}#panel-toggle{position:absolute;left:-32px;top:12px;width:32px;height:32px;background:var(--bg-surface);border:1px solid var(--border-light);border-right:none;border-radius:var(--radius-sm) 0 0 var(--radius-sm);display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text-muted);z-index:10;transition:all var(--transition)}#panel-toggle:hover{color:var(--text);background:var(--bg-elevated)}#panel.panel-collapsed #panel-toggle svg{transform:rotate(180deg)}#panel-content{flex:1;overflow-y:auto;padding:20px}#panel-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;text-align:center;gap:16px}#panel-empty p{color:var(--text-dim);font-size:13px;line-height:1.6;max-width:200px}#panel-title{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--border-light);display:flex;align-items:center;gap:8px}.panel-actions{margin-top:20px;padding-top:16px;border-top:1px solid var(--border-light)}.panel-actions-row{display:flex;gap:8px}.panel-action-btn{flex:1;justify-content:center}.form-group{margin-bottom:14px}.form-group label{display:block;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);margin-bottom:6px}.form-group label .required{color:var(--danger);margin-left:2px}.form-group input,.form-group textarea,.form-group select{width:100%;padding:9px 12px;background:var(--bg);border:1px solid var(--border-light);border-radius:var(--radius-sm);color:var(--text);font-family:inherit;font-size:13px;transition:border-color var(--transition);outline:none}.form-group input:focus,.form-group textarea:focus,.form-group select:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-muted)}.form-group textarea{resize:vertical;min-height:60px}.form-static{font-size:13px;color:var(--text-muted);padding:9px 0}.form-group select{cursor:pointer;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center;padding-right:32px}#modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .15s ease}#modal-overlay.hidden{display:none}#modal{background:var(--bg-surface);border:1px solid var(--border-light);border-radius:12px;width:460px;max-width:90vw;max-height:85vh;display:flex;flex-direction:column;box-shadow:var(--shadow);animation:slideUp .2s ease}#modal-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border-light)}#modal-header h3{font-size:15px;font-weight:600}#modal-body{padding:20px;overflow-y:auto;flex:1}#modal-footer{display:flex;justify-content:flex-end;gap:8px;padding:16px 20px;border-top:1px solid var(--border-light)}#toast-container{position:fixed;bottom:20px;right:20px;z-index:2000;display:flex;flex-direction:column;gap:8px}.toast{padding:12px 20px;border-radius:var(--radius);font-size:13px;font-weight:500;color:#fff;animation:slideIn .2s ease,fadeOut .3s ease 2.7s;box-shadow:var(--shadow)}.toast-success{background:var(--success)}.toast-error{background:var(--danger)}.toast-info{background:var(--primary)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}@keyframes slideIn{0%{opacity:0;transform:translate(40px)}to{opacity:1;transform:translate(0)}}@keyframes fadeOut{0%{opacity:1}to{opacity:0}}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-dim)}.context-hint{font-size:11px;color:var(--text-dim);margin-top:4px}.type-badge{display:inline-block;font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;padding:3px 8px;border-radius:4px;background:var(--primary-muted);color:var(--primary)}.type-badge.edge{background:#a855f726;color:#a855f7}.type-badge.graph{background:#22c55e26;color:#22c55e}.toolbar-separator{width:1px;height:24px;background:var(--border);margin:0 4px;align-self:center}.toolbar-user{display:flex;align-items:center;gap:8px;margin-left:4px}.user-display{font-size:12px;color:var(--text-muted);max-width:140px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.graph-list-section{max-height:260px;overflow-y:auto}.graph-list-item{display:flex;align-items:center;justify-content:space-between;padding:8px 10px;border-radius:var(--radius-sm);cursor:pointer;transition:background var(--transition);gap:8px}.graph-list-item:hover{background:var(--bg-elevated)}.graph-list-item.active{background:var(--primary-muted)}.graph-list-item-info{flex:1;min-width:0}.graph-list-item-title{font-size:13px;font-weight:500;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.graph-list-item-date{font-size:11px;color:var(--text-dim);margin-top:2px}.dropdown{position:relative}.dropdown-menu{position:absolute;top:calc(100% + 8px);right:0;width:300px;max-height:80vh;overflow-y:auto;background:var(--bg-surface);border:1px solid var(--border-light);border-radius:var(--radius);box-shadow:var(--shadow);z-index:500;animation:slideUp .15s ease}.dropdown-menu.hidden{display:none}.dropdown-section{padding:12px 16px;border-bottom:1px solid var(--border-light)}.dropdown-section:last-child{border-bottom:none}.dropdown-label{font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--text-dim);margin-bottom:8px}.settings-actions{display:flex;flex-direction:column;gap:2px;padding:8px!important}.settings-action-btn{justify-content:flex-start!important;gap:10px;padding:8px 10px!important;border-radius:6px;font-size:13px;color:var(--text-muted);transition:background .1s}.settings-action-btn:hover{background:var(--bg-hover, rgba(255,255,255,.06))}.settings-user-row{display:flex;align-items:center;gap:8px;padding:6px 10px;color:var(--text-dim)}.accordion-trigger{position:relative}.accordion-chevron{margin-left:auto;transition:transform .2s ease;flex-shrink:0;opacity:.5}.accordion-trigger.open .accordion-chevron{transform:rotate(180deg)}.accordion-body{max-height:0;overflow:hidden;transition:max-height .25s ease}.accordion-body.open{max-height:600px}.accordion-content{padding:10px 10px 6px;border-left:2px solid var(--border-light, rgba(255,255,255,.06));margin-left:8px;margin-top:2px}.setting-row{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;color:var(--text-muted)}.toggle{position:relative;display:inline-block;width:36px;height:20px;flex-shrink:0}.toggle input{opacity:0;width:0;height:0}.toggle-slider{position:absolute;cursor:pointer;top:0;right:0;bottom:0;left:0;background:var(--bg-elevated);border:1px solid var(--border);border-radius:10px;transition:all var(--transition)}.toggle-slider:before{content:"";position:absolute;width:14px;height:14px;left:2px;top:2px;background:var(--text-muted);border-radius:50%;transition:all var(--transition)}.toggle input:checked+.toggle-slider{background:var(--primary);border-color:var(--primary)}.toggle input:checked+.toggle-slider:before{transform:translate(16px);background:#fff}.setting-select{width:100%;padding:7px 28px 7px 10px;background:var(--bg);border:1px solid var(--border-light);border-radius:var(--radius-sm);color:var(--text);font-family:inherit;font-size:13px;outline:none;cursor:pointer;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 8px center;transition:border-color var(--transition)}.setting-select:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-muted)}.setting-row-stacked{flex-direction:column;align-items:flex-start!important;gap:4px}.setting-row-stacked label{font-size:12px;color:var(--text-muted);font-weight:500}.setting-input{width:100%;padding:7px 10px;background:var(--bg);border:1px solid var(--border-light);border-radius:var(--radius-sm);color:var(--text);font-family:inherit;font-size:13px;outline:none;transition:border-color var(--transition);box-sizing:border-box}.setting-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-muted)}.setting-textarea{width:100%;padding:7px 10px;background:var(--bg);border:1px solid var(--border-light);border-radius:var(--radius-sm);color:var(--text);font-family:inherit;font-size:12px;line-height:1.5;outline:none;resize:vertical;transition:border-color var(--transition);box-sizing:border-box}.setting-textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-muted)}.model-select-group{width:100%;display:flex;flex-direction:column;gap:4px}.dropdown-divider{height:1px;background:var(--border-light);margin:4px 0}.spinner-overlay{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;padding:32px}.spinner{width:36px;height:36px;border:3px solid var(--border-light);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.spinner-text{font-size:13px;color:var(--text-muted)}.setting-range{flex:1;-webkit-appearance:none;-moz-appearance:none;appearance:none;height:4px;background:var(--bg-elevated);border-radius:2px;outline:none;cursor:pointer}.setting-range::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:14px;height:14px;background:var(--primary);border-radius:50%;cursor:pointer;transition:transform var(--transition)}.setting-range::-webkit-slider-thumb:hover{transform:scale(1.2)}.setting-range::-moz-range-thumb{width:14px;height:14px;background:var(--primary);border:none;border-radius:50%;cursor:pointer}.range-value{font-size:12px;font-weight:500;color:var(--text-dim);min-width:32px;text-align:right;font-variant-numeric:tabular-nums}.color-field{display:flex;align-items:center;gap:10px}.color-field input[type=color]{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:40px;height:36px;border:1px solid var(--border-light);border-radius:var(--radius-sm);background:none;cursor:pointer;padding:2px}.color-field input[type=color]::-webkit-color-swatch-wrapper{padding:0}.color-field input[type=color]::-webkit-color-swatch{border:none;border-radius:3px}.color-field .color-hex{font-size:13px;font-family:Courier New,monospace;color:var(--text-muted);flex:1}.color-reset-btn{flex-shrink:0;padding:4px 8px!important;font-size:11px!important}#node-legend{position:absolute;top:12px;right:12px;z-index:10;transition:right var(--transition);background:#0f172ad9;border:1px solid var(--border);border-radius:8px;padding:10px 14px;display:flex;flex-direction:column;gap:6px;pointer-events:none}#node-legend .legend-title{font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin-bottom:2px}#node-legend .legend-item{display:flex;align-items:center;gap:8px}#node-legend .legend-swatch{width:14px;height:14px;border-radius:3px;flex-shrink:0}#node-legend .legend-label{font-size:12px;color:var(--text-secondary)}