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<title>Neuraxon v2.0 Multi-Sphere โ€” Interactive Brain Builder By David Vivancos & Jose Sanchez (2026) for Qubic Science</title>
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<div class="hud" id="hud-top"><div id="brand" class="glass"><h1><a href="https://www.researchgate.net/publication/400868863" target="_blank">๐Ÿง  Neuraxon v2.0 Multi-Sphere</a></h1><div class="sub">Bioinspired Modular Connectomic Architecture โ€” By <a href="https://vivancos.com/" target="_blank" style="color:var(--cyan)">David Vivancos</a> & <a href="https://josesanchezgarcia.com/" target="_blank" style="color:var(--cyan)">Jose Sanchez</a> โ€” <a href="https://qubic.org/" target="_blank" style="color:var(--cyan)">Qubic</a> Open Science ยท</div></div><div id="stats" class="glass"><span class="l">Spheres:</span> <span class="v" id="s-sph">0</span> <span class="l">Links:</span> <span class="v" id="s-lnk">0</span> <span class="l">Neurons:</span> <span class="v" id="s-neu">0</span> <span class="l">Syn:</span> <span class="v" id="s-syn">0</span><br><span class="l">Time:</span> <span class="v" id="s-time">0</span><span class="l">ms</span> <span class="l">Steps:</span> <span class="v" id="s-steps">0</span> <span class="l">Energy:</span> <span class="c" id="s-nrg">0</span> <span class="l">Active:</span> <span class="c" id="s-act">0</span><br><span class="l" style="opacity:.5;font-size:8px;">โœ‹ Layout mode to drag spheres ยท DblClick to add ยท ๐Ÿ”— to link</span></div></div>
<div id="toolbar"><button class="tbtn" onclick="showPresets()"><span>๐Ÿง </span><span class="tp">Brain Presets</span></button><button class="tbtn" onclick="addSphereUI()"><span>โž•</span><span class="tp">Add Sphere</span></button><button class="tbtn" onclick="startLinking()" id="lnk-tool"><span>๐Ÿ”—</span><span class="tp">Connect Spheres</span></button><button class="tbtn" onclick="deleteSelected()"><span>๐Ÿ—‘</span><span class="tp">Delete</span></button><button class="tbtn" onclick="togLayout()" id="layout-btn"><span>โœ‹</span><span class="tp">Layout Mode</span></button><div style="height:1px;background:var(--border);margin:3px 5px;"></div><button class="tbtn" onclick="saveBrain()"><span>๐Ÿ’พ</span><span class="tp">Save Brain</span></button><button class="tbtn" onclick="document.getElementById('li').click()"><span>๐Ÿ“‚</span><span class="tp">Load Brain</span></button><input type="file" id="li" accept=".json" style="display:none" onchange="loadBrain(this)"><button class="tbtn" onclick="exportSphere()"><span>๐Ÿ“ค</span><span class="tp">Export Sphere</span></button><button class="tbtn" onclick="document.getElementById('lsi').click()"><span>๐Ÿ“ฅ</span><span class="tp">Import Sphere</span></button><input type="file" id="lsi" accept=".json" style="display:none" onchange="importSphere(this)"><div style="height:1px;background:var(--border);margin:3px 5px;"></div><button class="tbtn" onclick="resetCam()"><span>๐ŸŽฏ</span><span class="tp">Reset View</span></button><button class="tbtn on" onclick="togRotate()" id="rot-btn"><span>๐Ÿ”„</span><span class="tp">Auto Rotate</span></button></div>
<div id="m-toolbar" class="glass"><button class="mb" onclick="showPresets()">๐Ÿง </button><button class="mb" onclick="addSphereUI()">โž•</button><button class="mb" onclick="startLinking()" id="m-lnk">๐Ÿ”—</button><button class="mb" onclick="togLayout()" id="m-layout">โœ‹</button><button class="mb" onclick="deleteSelected()">๐Ÿ—‘</button><button class="mb" onclick="saveBrain()">๐Ÿ’พ</button><button class="mb" onclick="document.getElementById('li').click()">๐Ÿ“‚</button><button class="mb" onclick="togMobilePanel()">โš™</button></div>
<div id="panel" class="glass"><div class="ptog" onclick="togPanel()"><h2>Control Center</h2><span class="ar">โ—‚</span></div><div class="tabs"><button class="tab on" onclick="stab('spheres',this)">Spheres</button><button class="tab" onclick="stab('neuromod',this)">Neuromod</button><button class="tab" onclick="stab('links',this)">Links</button><button class="tab" onclick="stab('detail',this)">Detail</button></div><div class="pbody"><div class="tc on" id="t-spheres"><div class="br"><button class="btn btn-p" onclick="addSphereUI()">+ Add Sphere</button><button class="btn" onclick="showPresets()">๐Ÿง  Presets</button></div><div id="sph-list"></div></div><div class="tc" id="t-neuromod"><div class="sec"><div class="st">Global Volume Transmission</div><div class="nm"><span class="ni">๐ŸŽฏ</span><label>Dopamine</label><input type="range" id="nm-da" min="0" max="1" step="0.01" value="0.15"><span class="nv" id="nv-da">0.15</span></div><div class="nm"><span class="ni">๐Ÿ˜Š</span><label>Serotonin</label><input type="range" id="nm-5ht" min="0" max="1" step="0.01" value="0.15"><span class="nv" id="nv-5ht">0.15</span></div><div class="nm"><span class="ni">๐Ÿ’ก</span><label>Acetylcholine</label><input type="range" id="nm-ach" min="0" max="1" step="0.01" value="0.15"><span class="nv" id="nv-ach">0.15</span></div><div class="nm"><span class="ni">โšก</span><label>Norepinephrine</label><input type="range" id="nm-na" min="0" max="1" step="0.01" value="0.15"><span class="nv" id="nv-na">0.15</span></div></div><div class="sec"><div class="st">Receptors</div><div id="r-disp" style="display:grid;grid-template-columns:repeat(3,1fr);gap:2px;"></div></div><div class="sec"><div class="st">Oscillators</div><div id="osc-disp" style="display:flex;align-items:flex-end;gap:2px;height:28px;"></div><div style="display:flex;justify-content:space-between;font-size:7px;font-family:var(--mono);color:var(--dim);margin-top:1px;"><span>Infra</span><span>Slow</span><span>ฮธ</span><span>ฮฑ</span><span>ฮณ</span></div></div></div><div class="tc" id="t-links"><div class="br"><button class="btn" onclick="startLinking()">๐Ÿ”— New Link</button></div><div id="lnk-list"></div></div><div class="tc" id="t-detail"><div id="det-c"><div style="color:var(--dim);font-size:.75em;padding:16px 0;text-align:center;">Click a sphere to see details</div></div></div></div></div>
<div id="bbar" class="glass"><div style="display:flex;gap:3px;"><button class="sb" id="btn-play" onclick="togSim()">โ–ถ</button><button class="sb" onclick="stepOnce()">โญ</button><button class="sb" onclick="resetSim()">โ†ป</button></div><input type="range" id="spd-sl" min="1" max="60" value="15" style="width:70px;height:3px;-webkit-appearance:none;background:var(--border);border-radius:2px;outline:none;"><span id="spd">15 Hz</span><div class="pip"><div class="pp" id="pp-ch">CHRONO</div><div class="pp" id="pp-ds">DSN</div><div class="pp" id="pp-ct">CTSN</div><div class="pp" id="pp-ag">AGMP</div></div></div>
<div class="legend glass"><div class="li"><div class="lc2" style="background:#00ccff;"></div>Input (Box)</div><div class="li"><div class="lc2" style="background:#bb77ff;border-radius:50%;"></div>Hidden (Sphere)</div><div class="li"><div class="lc2" style="background:#ff3366;"></div>Output (Cone)</div><div class="li"><div class="lc2" style="background:#00ff88;height:3px;"></div>Excitatory</div><div class="li"><div class="lc2" style="background:#ff4488;height:3px;"></div>Inhibitory</div><div class="li"><div class="lc2" style="background:#ffc040;border-radius:50%;"></div>Neuromod ๐ŸŽฏ๐Ÿ˜Š๐Ÿ’กโšก</div></div>
<div id="pmod"><div class="mbox"><h2>๐Ÿง  Brain Presets</h2><div class="pc" onclick="loadPreset('sensory-motor')"><h3>๐Ÿ‘๐Ÿ‘‚ Sensory โ†’ Association โ†’ Motor ๐Ÿ’ช</h3><p>V1+A1 โ†’ Associative โ†’ Prefrontal โ†’ Motor. Feedback connections.</p><div class="tgs"><span class="tg">5 spheres</span><span class="tg">FF+FB</span></div></div><div class="pc" onclick="loadPreset('prefrontal')"><h3>๐Ÿงฉ Prefrontal Executive Control</h3><p>V1, A1, Somatosensory, Association, dlPFC, Motor.</p><div class="tgs"><span class="tg">6 spheres</span><span class="tg">executive</span></div></div><div class="pc" onclick="loadPreset('triangle')"><h3>๐Ÿ”„ Triangular Recurrent Loop</h3><p>Aโ†’Bโ†’Cโ†’A cycle with laterals.</p><div class="tgs"><span class="tg">3 spheres</span><span class="tg">recurrent</span></div></div><div class="pc" onclick="loadPreset('star')"><h3>๐Ÿง  Star / Global Workspace</h3><p>Central executive โ†” 4 modality spheres.</p><div class="tgs"><span class="tg">5 spheres</span><span class="tg">broadcast</span></div></div><div class="pc" onclick="loadPreset('minimal')"><h3>โšก Minimal Pair</h3><p>Two spheres, bidirectional.</p><div class="tgs"><span class="tg">2 spheres</span></div></div><div class="pc" onclick="loadPreset('drosophila')" style="border:1px solid rgba(0,230,176,0.25);background:rgba(0,230,176,0.03);"><h3>๐Ÿชฐ Drosophila melanogaster Adult Brain</h3><p>Hemibrain connectome: 139,255 neurons across 10 brain regions (OL, CX, MB, INP, FB, VB, SIP, SLP, CRE, LH). Small-world topology with region-specific connectivity from published connectomics data.</p><div class="tgs"><span class="tg">10 spheres</span><span class="tg">139,255 neurons</span><span class="tg">hemibrain v1.2</span><span class="tg">connectome</span><span class="tg">FF+FB+LAT</span></div></div><div style="text-align:center;margin-top:10px;"><button class="btn" onclick="hidePresets()">Close</button></div></div></div></div>
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'use strict';const E=id=>document.getElementById(id);
const ST={sensory_visual:{hex:0xddaa44,css:'#ddaa44',label:'V1 Visual',emoji:'๐Ÿ‘',layer:'L0'},sensory_auditory:{hex:0x55bbcc,css:'#55bbcc',label:'A1 Auditory',emoji:'๐Ÿ‘‚',layer:'L0'},sensory_somatosensory:{hex:0x66bb66,css:'#66bb66',label:'Somatosensory',emoji:'๐Ÿ–',layer:'L0'},association:{hex:0x7799cc,css:'#7799cc',label:'Association',emoji:'๐Ÿ”„',layer:'L1'},prefrontal:{hex:0x55cc88,css:'#55cc88',label:'Prefrontal',emoji:'๐Ÿงฉ',layer:'L2'},motor:{hex:0xcc66aa,css:'#cc66aa',label:'Motor',emoji:'๐Ÿ’ช',layer:'L2'},executive:{hex:0xaa77dd,css:'#aa77dd',label:'Executive',emoji:'๐Ÿง ',layer:'L3'},custom:{hex:0x77aacc,css:'#77aacc',label:'Custom',emoji:'โš™',layer:'L1'}};
const ME={DA:'๐ŸŽฏ','5HT':'๐Ÿ˜Š',ACh:'๐Ÿ’ก',NA:'โšก'};
let B={spheres:{},links:{},gNM:{DA:.15,'5HT':.15,ACh:.15,NA:.15},gP:{DA:0,'5HT':0,ACh:0,NA:0},R:{D1:0,D2:0,'5HT1A':0,'5HT2A':0,'5HT4':0,M1:0,M2:0,beta1:0,alpha2:0},osc:{infraslow:Math.random()*6.28,slow:Math.random()*6.28,theta:Math.random()*6.28,alpha:Math.random()*6.28,gamma:Math.random()*6.28},t:0,steps:0};
let selId=null,linkMode=false,linkSrc=null,simOn=false,simIv=null,sCtr=0;
function mkN(id,tp){return{id,type:tp,state:0,pot:0,st:0,ch:0,adapt:0,auto:0,hp:1,act:true,fr:.2,ast:0,da:.5};}
function mkSy(p,q){return{p,q,b:~~(Math.random()*3),wf:(Math.random()-.5)*.6,ws:(Math.random()-.5)*.3,wm:(Math.random()-.5)*.1,sil:Math.random()<.1,mod:Math.random()<.15,int:1,pt:0,qt:0,dw:0,cf:0,cs:0,om:.5,el:0};}
function mkSphere(id,type,pos,p={}){const nI=p.nI||4,nH=p.nH||15,nO=p.nO||4;let ni=0;const neu={input:[],hidden:[],output:[]};for(let i=0;i<nI;i++)neu.input.push(mkN(ni++,'input'));for(let i=0;i<nH;i++)neu.hidden.push(mkN(ni++,'hidden'));for(let i=0;i<nO;i++)neu.output.push(mkN(ni++,'output'));const all=[...neu.input,...neu.hidden,...neu.output],N=all.length;const shIdx=Array.from({length:N},(_,i)=>i);for(let i=N-1;i>0;i--){const j=~~(Math.random()*(i+1));[shIdx[i],shIdx[j]]=[shIdx[j],shIdx[i]];}const ring=shIdx.map(i=>all[i]);const k=Math.min(Math.max(6,Math.round(N*.3)),N-1),hk=Math.max(~~(k/2),1);const edges=new Set();for(let i=0;i<N;i++)for(let j=1;j<=hk;j++)for(const t of[(i+j)%N,(i-j+N)%N])if(!(ring[i].type==='output'&&ring[t].type==='input')&&i!==t)edges.add(ring[i].id+'-'+ring[t].id);const ea=[...edges];for(const e of ea)if(Math.random()<.35){edges.delete(e);const s2=ring[~~(Math.random()*N)],t2=ring[~~(Math.random()*N)];if(s2.id!==t2.id&&!edges.has(s2.id+'-'+t2.id)&&!(s2.type==='output'&&t2.type==='input'))edges.add(s2.id+'-'+t2.id);else edges.add(e);}const syn=[];for(const e of edges){const[a,b]=e.split('-').map(Number);syn.push(mkSy(a,b));}const col=ST[type]||ST.custom;return{id,type,label:p.label||col.label,layerId:p.layerId||col.layer,pos:{x:pos.x||0,y:pos.y||0,z:pos.z||0},color:col,neu,syn,nI,nH,nO,nm:{DA:.15,'5HT':.15,ACh:.15,NA:.15},ph:{DA:0,'5HT':0,ACh:0,NA:0},osc:{infraslow:Math.random()*6.28,slow:Math.random()*6.28,theta:Math.random()*6.28,alpha:Math.random()*6.28,gamma:Math.random()*6.28},inP:neu.input.map(n=>n.id),outP:neu.output.map(n=>n.id),nrg:0,time:0};}
function mkLink(si,ti,type='feedforward'){const s=B.spheres[si],t=B.spheres[ti];if(!s||!t)return null;const W=[];for(let r=0;r<s.outP.length;r++){const row=[];for(let c=0;c<t.inP.length;c++)row.push((Math.random()-.3)*.5);W.push(row);}return{id:si+'__'+ti+'__'+Date.now(),si,ti,type,W,pr:.005};}
function fN(s,nid){return[...s.neu.input,...s.neu.hidden,...s.neu.output].find(n=>n.id===nid);}
// โ•โ•โ• SIMULATION โ•โ•โ•
function simStep(){const dt=1,of={infraslow:.05,slow:.5,theta:6,alpha:10,gamma:40};for(const b in B.osc)B.osc[b]=(B.osc[b]+2*Math.PI*of[b]*dt/1000)%(2*Math.PI);let mA=0,cnt=0;for(const si in B.spheres){[...B.spheres[si].neu.input,...B.spheres[si].neu.hidden,...B.spheres[si].neu.output].forEach(n=>{mA+=Math.abs(n.state);cnt++;});}if(cnt>0)mA/=cnt;B.gP.DA+=dt/200*(-B.gP.DA)+.02*mA*dt;B.gP['5HT']+=dt/200*(-B.gP['5HT'])+.01*mA*dt;B.gP.ACh+=dt/200*(-B.gP.ACh)+.015*mA*dt;B.gP.NA+=dt/200*(-B.gP.NA)+.02*mA*dt;const T=B.gNM,P=B.gP,rd={D1:{p:'DA',th:.35,t:false},D2:{p:'DA',th:.25,t:true},'5HT1A':{p:'5HT',th:.05,t:true},'5HT2A':{p:'5HT',th:.3,t:false},'5HT4':{p:'5HT',th:.2,t:false},M1:{p:'ACh',th:.3,t:false},M2:{p:'ACh',th:.1,t:true},beta1:{p:'NA',th:.2,t:false},alpha2:{p:'NA',th:.08,t:true}};for(const[n,r]of Object.entries(rd)){const c=r.t?T[r.p]:(T[r.p]+(P[r.p]||0));B.R[n]=1/(1+Math.exp(Math.max(-50,Math.min(50,-(r.t?20:10)*(c-r.th)))));}const inj={};for(const si in B.spheres)inj[si]={};for(const li in B.links){const l=B.links[li],src=B.spheres[l.si],tgt=B.spheres[l.ti];if(!src||!tgt)continue;let gate=1;if(l.type==='feedforward')gate=1+.3*(.5+.5*Math.sin(src.osc.gamma))*Math.max(0,Math.cos(src.osc.gamma));else if(l.type==='feedback')gate=1+.3*Math.max(0,-Math.cos(tgt.osc.alpha));else if(l.type==='lateral')gate=1+.2*Math.max(0,Math.cos(src.osc.theta-tgt.osc.theta));for(let r=0;r<Math.min(src.outP.length,l.W.length);r++){const sn=fN(src,src.outP[r]);if(!sn)continue;for(let c=0;c<Math.min(tgt.inP.length,l.W[r].length);c++){inj[l.ti][tgt.inP[c]]=(inj[l.ti][tgt.inP[c]]||0)+gate*l.W[r][c]*sn.state;}}}for(const si in B.spheres)simSph(B.spheres[si],inj[si]||{},dt);for(const li in B.links){const l=B.links[li],src=B.spheres[l.si],tgt=B.spheres[l.ti];if(!src||!tgt||l.pr<=0)continue;const dg=.5+B.gNM.DA;for(let r=0;r<l.W.length;r++){const sn=fN(src,src.outP[r]);if(!sn)continue;for(let c=0;c<l.W[r].length;c++){const tn=fN(tgt,tgt.inP[c]);if(!tn)continue;l.W[r][c]=Math.max(-1.5,Math.min(1.5,l.W[r][c]+l.pr*sn.state*tn.state*dg*dt));}}}B.steps++;let mx=0;for(const si in B.spheres)mx=Math.max(mx,B.spheres[si].time);B.t=mx;animPip();updHUD();if(B.steps%2===0)spawnIntra();spawnInter();}
function simSph(s,ext,dt){const all=[...s.neu.input,...s.neu.hidden,...s.neu.output],R=B.R;for(const k in B.gNM)s.nm[k]+=.1*(B.gNM[k]-s.nm[k])*dt;const of2={infraslow:.05,slow:.5,theta:6,alpha:10,gamma:40};for(const b in s.osc)s.osc[b]=(s.osc[b]+2*Math.PI*of2[b]*dt/1000)%(2*Math.PI);const bI={},mI={};all.forEach(n=>{bI[n.id]={0:[],1:[],2:[]};mI[n.id]=[];});for(const syn of s.syn){if(syn.int<=0)continue;const pre=all.find(n=>n.id===syn.p);if(!pre||!pre.act)continue;const sp=Math.abs(pre.state)===1?1:0;syn.cf=.95*syn.cf+sp;syn.cs=Math.pow(.99,syn.om)*syn.cs+sp;syn.om=1/(1+Math.exp(-(2*sp+1.5*syn.cs-1)));let inp=0;if(!syn.sil)inp=(syn.wf+syn.ws)*pre.state+.15*syn.wf*syn.cf+.08*syn.ws*syn.cs;if(bI[syn.q]&&bI[syn.q][syn.b])bI[syn.q][syn.b].push(inp);if(syn.mod&&mI[syn.q])mI[syn.q].push(syn.wm*pre.state);}for(const n of all){if(!n.act)continue;n._pv=n.state;if(n.type==='input'){const e=ext[n.id];if(e!==undefined){n.state=e>.25?1:(e<-.25?-1:0);n.pot=e;}continue;}let D=0;const bi=bI[n.id]||{};for(const b in bi){const sm=bi[b].reduce((a,v)=>a+v,0);D+=Math.abs(sm)>.4?Math.sign(sm)*Math.pow(Math.abs(sm),1.3):sm;}if(ext[n.id]!==undefined)D+=ext[n.id];const gNA=1+.5*(R.beta1||0)+.2*(R.alpha2||0),sp2=(.02+.3*(R.alpha2||0))*(Math.random()<.5?1:-1)*(Math.random()<.02?1:0),od=.1*(Math.sin(s.osc.gamma*2+n.id*.5)*Math.max(0,Math.cos(s.osc.theta+n.id*.3)));n.pot=n.da*n.pot+(1-n.da)*(gNA*D+od-n.adapt+sp2);n.ch=.9*n.ch+.1*Math.tanh((Math.abs(D)+Math.abs(ext[n.id]||0))*.5);n.st=n.pot+n.ch;const rm=(mI[n.id]||[]).reduce((a,v)=>a+v,0)+.3*(R.M1||0)-.2*(R.M2||0),dM=.3*Math.tanh(rm),dH=.0005*(n.fr-.2);n.state=n.st>(.4-dM+dH-.1*n.auto)?1:(n.st<(-.4-dM+dH+.1*n.auto)?-1:0);n.adapt+=dt/100*(-n.adapt+.1*Math.abs(n.state));n.auto+=dt/200*(-n.auto+.2*n.state);n.fr+=.01*(Math.abs(n.state)-n.fr)*dt;n.ast=.999*n.ast+.001*Math.abs(n.st);}for(const syn of s.syn){if(syn.int<=0)continue;const pre=all.find(n=>n.id===syn.p),post=all.find(n=>n.id===syn.q);if(!pre||!post||!pre.act||!post.act)continue;syn.pt+=(-syn.pt/20+(pre.state===1?1:0))*dt;syn.qt+=(-syn.qt/20+(post.state===1?1:0))*dt;let dw=.01*syn.pt*(post.state===1?1:0)*(R.D1||.5)-.01*syn.qt*(pre.state===1?1:0)*(R.D2||.5);syn.wf=Math.max(-1,Math.min(1,syn.wf+dt/5*(-.01*syn.wf+.3*dw)));syn.ws=Math.max(-1,Math.min(1,syn.ws+dt/50*(-.01*syn.ws+.1*dw)));syn.wm=Math.max(-.5,Math.min(.5,syn.wm+dt/1000*(-.01*syn.wm+.05*dw)));if(Math.abs(syn.wf)<.01&&Math.abs(syn.ws)<.01)syn.int-=.01*dt;else syn.int=Math.min(1,syn.int+.001*dt);}s.nrg+=.01*all.filter(n=>n.act&&n.state!==0).length*dt;s.time+=dt;}
let pipS=0;function animPip(){pipS=(pipS+1)%4;['pp-ch','pp-ds','pp-ct','pp-ag'].forEach((id,i)=>E(id).classList.toggle('on',i===pipS));}
// โ•โ•โ• THREE.JS โ•โ•โ•
let scene,cam,rnd,orb,world,brainG;const VM={},LVM={};let iParts=[],eParts=[];const emoTex={},ray=new THREE.Raycaster(),mouse=new THREE.Vector2();
function initThree(){const cv=E('c3d');scene=new THREE.Scene();scene.background=new THREE.Color(0x040810);cam=new THREE.PerspectiveCamera(50,cv.clientWidth/cv.clientHeight,.1,900);cam.position.set(0,25,90);rnd=new THREE.WebGLRenderer({canvas:cv,antialias:true});rnd.setSize(cv.clientWidth,cv.clientHeight,false);rnd.setPixelRatio(Math.min(devicePixelRatio,2));rnd.toneMapping=THREE.ACESFilmicToneMapping;rnd.toneMappingExposure=1.15;orb=new THREE.OrbitControls(cam,rnd.domElement);orb.enableDamping=true;orb.dampingFactor=.06;orb.autoRotate=true;orb.autoRotateSpeed=.12;scene.add(new THREE.HemisphereLight(0x0a1428,0x060a10,.55));scene.add(new THREE.AmbientLight(0x1a2840,.3));const d=new THREE.DirectionalLight(0x8ab4f8,.7);d.position.set(35,45,25);scene.add(d);const p1=new THREE.PointLight(0xff5588,.35,140);p1.position.set(-35,20,-25);scene.add(p1);const p2=new THREE.PointLight(0x44ddee,.35,140);p2.position.set(25,-15,35);scene.add(p2);const sg=new THREE.BufferGeometry(),sv=[];for(let i=0;i<500;i++)sv.push((Math.random()-.5)*350,(Math.random()-.5)*350,(Math.random()-.5)*350);sg.setAttribute('position',new THREE.Float32BufferAttribute(sv,3));scene.add(new THREE.Points(sg,new THREE.PointsMaterial({color:0x223344,size:.35,transparent:true,opacity:.4})));world=new THREE.Group();scene.add(world);mkBrain();mkEmoji();cv.addEventListener('click',onClick);cv.addEventListener('dblclick',onDbl);cv.addEventListener('mousedown',onDown);cv.addEventListener('mousemove',onMove);cv.addEventListener('mouseup',onUp);requestAnimationFrame(loop);}
function mkBrain(){brainG=new THREE.Group();
function mkHemi(xOff){
 const geo=new THREE.SphereGeometry(26,48,36);
 const pos=geo.attributes.position;
 for(let i=0;i<pos.count;i++){
 let x=pos.getX(i),y=pos.getY(i),z=pos.getZ(i);
 y*=.72;z*=.88;
 const xDist=Math.abs(x);if(xDist<3.5)x+=Math.sign(x||1)*(.7*(3.5-xDist));
 // Cortical folds via multiple sine waves
 const r=Math.sqrt(x*x+y*y+z*z);
 if(r>2){
 const lat=Math.atan2(y,Math.sqrt(x*x+z*z)),lon=Math.atan2(z,x);
 const folds=Math.sin(lat*4+lon*2)*.6+Math.sin(lat*7-lon*3)*.3+Math.sin(lon*5+lat)*.25+Math.cos(lat*3+lon*4)*.2;
 const sc=(r+folds)/r;x*=sc;y*=sc;z*=sc;
 }
 pos.setXYZ(i,x+xOff,y+2,z);
 }
 geo.computeVertexNormals();
 brainG.add(new THREE.Mesh(geo,new THREE.MeshPhongMaterial({color:0x3a5577,emissive:0x1a3355,emissiveIntensity:.4,transparent:true,opacity:.14,side:THREE.FrontSide,depthWrite:false,flatShading:true})));
 // Subtle wireframe
 const wGeo=geo.clone();
 brainG.add(new THREE.Mesh(wGeo,new THREE.MeshBasicMaterial({color:0x4a7099,transparent:true,opacity:.05,wireframe:true,depthWrite:false})));
}
mkHemi(-3);mkHemi(3);
// Cerebellum
const cg=new THREE.SphereGeometry(10,28,22);const cp=cg.attributes.position;
for(let i=0;i<cp.count;i++){let x=cp.getX(i),y=cp.getY(i),z=cp.getZ(i);y*=.55;const r=Math.sqrt(x*x+y*y+z*z);if(r>1){const f=Math.sin(x*3.5)*.35+Math.sin(z*5)*.25;const sc=(r+f)/r;x*=sc;y*=sc;z*=sc;}cp.setXYZ(i,x,y-12+2,z-12);}
cg.computeVertexNormals();
brainG.add(new THREE.Mesh(cg,new THREE.MeshPhongMaterial({color:0x3a5577,emissive:0x1a3355,emissiveIntensity:.35,transparent:true,opacity:.11,side:THREE.FrontSide,depthWrite:false,flatShading:true})));
// Brainstem
const bsMesh=new THREE.Mesh(new THREE.CylinderGeometry(3.5,2.5,12,12),new THREE.MeshPhongMaterial({color:0x3a5577,emissive:0x1a3050,emissiveIntensity:.3,transparent:true,opacity:.09,depthWrite:false}));bsMesh.position.set(0,-16,-6);brainG.add(bsMesh);
world.add(brainG);}
function mkEmoji(){const all={...ME,...Object.fromEntries(Object.entries(ST).map(([k,v])=>[k,v.emoji]))};for(const[k,e]of Object.entries(all)){const c=document.createElement('canvas');c.width=128;c.height=128;const x=c.getContext('2d');x.font='96px serif';x.textAlign='center';x.textBaseline='middle';x.fillText(e,64,68);emoTex[k]=new THREE.CanvasTexture(c);}}
function buildSV(sph){const g=new THREE.Group();g.position.set(sph.pos.x,sph.pos.y,sph.pos.z);const all=[...sph.neu.input,...sph.neu.hidden,...sph.neu.output];const R=3.5+all.length*.08;const sGeo=new THREE.SphereGeometry(R,48,48);const sMat=new THREE.MeshPhongMaterial({color:sph.color.hex,emissive:sph.color.hex,emissiveIntensity:.2,transparent:true,opacity:.07,shininess:30,side:THREE.DoubleSide,depthWrite:false});const shell=new THREE.Mesh(sGeo,sMat);shell.renderOrder=10;g.add(shell);const igm=new THREE.Mesh(new THREE.SphereGeometry(R*.6,24,24),new THREE.MeshBasicMaterial({color:sph.color.hex,transparent:true,opacity:.04,blending:THREE.AdditiveBlending,depthWrite:false}));igm.renderOrder=10;g.add(igm);const golden=Math.PI*(3-Math.sqrt(5)),iR=R*.72,nM={};all.forEach((n,i)=>{const y=1-(i/Math.max(1,all.length-1))*2,r=Math.sqrt(Math.max(0,1-y*y)),theta=golden*i,px=Math.cos(theta)*r*iR,py=y*iR,pz=Math.sin(theta)*r*iR;let geo,ch,sc;if(n.type==='input'){geo=new THREE.BoxGeometry(1.2,1.2,1.2);ch=0x00ccff;sc=.35;}else if(n.type==='output'){geo=new THREE.ConeGeometry(.7,1.8,6);ch=0xff3366;sc=.35;}else{geo=new THREE.SphereGeometry(.7,16,16);ch=0xbb77ff;sc=.28;}const base=new THREE.Color(ch);const mat=new THREE.MeshPhongMaterial({color:base,emissive:base,emissiveIntensity:.7,transparent:true,opacity:.95,shininess:80});const mesh=new THREE.Mesh(geo,mat);mesh.position.set(px,py,pz);mesh.scale.set(sc,sc,sc);mesh.userData={nRef:n,bp:new THREE.Vector3(px,py,pz)};g.add(mesh);nM[n.id]=mesh;});const sM=[];const mx=Math.min(sph.syn.length,Math.max(180,all.length*4));const tubeSeg=all.length>50?8:12;for(let si=0;si<mx;si++){const syn=sph.syn[si];if(syn.int<=0)continue;const pM=nM[syn.p],qM=nM[syn.q];if(!pM||!qM)continue;const tw=syn.wf+syn.ws,str=Math.min(Math.abs(tw),1),c=tw>.02?0x00ff88:(tw<-.02?0xff4488:0x6688aa),rad=.012+.028*str;const d=new THREE.Vector3().subVectors(qM.position,pM.position),len=Math.max(.001,d.length()),dn=d.clone().normalize();let up=new THREE.Vector3(0,1,0);if(Math.abs(dn.dot(up))>.95)up=new THREE.Vector3(1,0,0);const nn=new THREE.Vector3().crossVectors(up,dn).normalize(),bn=new THREE.Vector3().crossVectors(dn,nn).normalize(),amp=len*.18;const p1=pM.position.clone().add(dn.clone().multiplyScalar(len*.3)).add(nn.clone().multiplyScalar((Math.random()-.5)*amp)),p2=pM.position.clone().add(dn.clone().multiplyScalar(len*.7)).add(bn.clone().multiplyScalar((Math.random()-.5)*amp));const curve=new THREE.CatmullRomCurve3([pM.position.clone(),p1,p2,qM.position.clone()]);const tGeo=new THREE.TubeGeometry(curve,tubeSeg,rad,5,false);const tMat=new THREE.MeshPhongMaterial({color:c,emissive:new THREE.Color(c),emissiveIntensity:.6,transparent:true,opacity:.85,shininess:50});const tMesh=new THREE.Mesh(tGeo,tMat);tMesh.userData={syn,curve,baseR:rad};g.add(tMesh);sM.push(tMesh);}const ringMat=new THREE.MeshBasicMaterial({color:0x40d0ff,transparent:true,opacity:0,side:THREE.DoubleSide,depthWrite:false});g.add(new THREE.Mesh(new THREE.RingGeometry(R+.3,R+.6,64),ringMat)).rotation.x=Math.PI/2;const lc=document.createElement('canvas');lc.width=512;lc.height=64;const lx=lc.getContext('2d');lx.font='bold 36px "DM Sans",sans-serif';lx.shadowColor='rgba(0,0,0,0.8)';lx.shadowBlur=6;lx.fillStyle=sph.color.css;lx.textAlign='center';lx.fillText(sph.label,256,42);const lsp=new THREE.Sprite(new THREE.SpriteMaterial({map:new THREE.CanvasTexture(lc),transparent:true,opacity:.9,depthTest:false}));lsp.scale.set(R*1.8,R*.35,1);lsp.position.y=R+1.5;lsp.renderOrder=998;g.add(lsp);if(emoTex[sph.type]){const es=new THREE.Sprite(new THREE.SpriteMaterial({map:emoTex[sph.type],transparent:true,opacity:.9,depthTest:false}));es.scale.set(3.5,3.5,1);es.position.y=R+3.5;es.renderOrder=999;es.userData.isEmojiIcon=true;g.add(es);}world.add(g);VM[sph.id]={group:g,shell,sMat,nM,sM,ringMat,R,all};}
function buildLV(lnk){const src=B.spheres[lnk.si],tgt=B.spheres[lnk.ti];if(!src||!tgt)return;
const sP=new THREE.Vector3(src.pos.x,src.pos.y,src.pos.z),eP=new THREE.Vector3(tgt.pos.x,tgt.pos.y,tgt.pos.z);
const mid=sP.clone().add(eP).multiplyScalar(.5),len=sP.distanceTo(eP);mid.y+=len*.15;mid.x+=(Math.random()-.5)*len*.1;
const curve=new THREE.QuadraticBezierCurve3(sP,mid,eP);
const tcol={feedforward:0x40d0ff,feedback:0xff9040,lateral:0xb060ff,recurrent:0xff5090};const c=tcol[lnk.type]||0x40d0ff;
// Main tract tube
const tube=new THREE.Mesh(new THREE.TubeGeometry(curve,32,.45,8,false),new THREE.MeshPhongMaterial({color:c,emissive:new THREE.Color(c),emissiveIntensity:.7,transparent:true,opacity:.55,shininess:60}));
const core=new THREE.Mesh(new THREE.TubeGeometry(curve,32,.15,6,false),new THREE.MeshBasicMaterial({color:0xffffff,transparent:true,opacity:.8,blending:THREE.AdditiveBlending}));
const glow=new THREE.Mesh(new THREE.TubeGeometry(curve,32,.9,8,false),new THREE.MeshBasicMaterial({color:c,transparent:true,opacity:.1,blending:THREE.AdditiveBlending,depthWrite:false}));
world.add(glow);world.add(tube);world.add(core);
// Port-to-port axon lines: output neurons โ†’ input neurons
const axons=[];const svM=VM[lnk.si],tvM=VM[lnk.ti];
if(svM&&tvM){
 svM.group.updateMatrixWorld(true);tvM.group.updateMatrixWorld(true);
 const nAxons=Math.min(src.outP.length,tgt.inP.length,6);
 for(let i=0;i<nAxons;i++){
 const oM=svM.nM[src.outP[i%src.outP.length]],iM=tvM.nM[tgt.inP[i%tgt.inP.length]];
 if(!oM||!iM)continue;
 // Convert local neuron positions to world positions
 const oW=oM.position.clone().applyMatrix4(svM.group.matrixWorld);
 const iW=iM.position.clone().applyMatrix4(tvM.group.matrixWorld);
 const aMid=oW.clone().add(iW).multiplyScalar(.5);
 aMid.y+=(Math.random()-.3)*3;aMid.x+=(Math.random()-.5)*2;aMid.z+=(Math.random()-.5)*2;
 const aCurve=new THREE.QuadraticBezierCurve3(oW,aMid,iW);
 const aGeo=new THREE.TubeGeometry(aCurve,16,.06,4,false);
 const aMat=new THREE.MeshBasicMaterial({color:c,transparent:true,opacity:.35,blending:THREE.AdditiveBlending,depthWrite:false});
 const aMesh=new THREE.Mesh(aGeo,aMat);
 world.add(aMesh);axons.push(aMesh);
 }
}
LVM[lnk.id]={tube,core,glow,axons,curve,color:c,link:lnk};}
function updSV(sph){const vm=VM[sph.id];if(!vm)return;const all=[...sph.neu.input,...sph.neu.hidden,...sph.neu.output];let ac=0;for(const n of all){const m=vm.nM[n.id];if(!m)continue;const act=Math.abs(n.state),bp=m.userData.bp,br=1+.08*act*Math.sin(B.t*.008+n.id);m.position.set(bp.x*br,bp.y*br,bp.z*br);let col,ei;if(n.state===1){col=n.type==='input'?0x00eeff:(n.type==='output'?0xff1144:0xdd44ff);ei=1.2;ac++;}else if(n.state===-1){col=n.type==='input'?0x4477ff:(n.type==='output'?0xaa0033:0x8844cc);ei=.9;ac++;}else{col=0x556688;ei=.35;}m.material.color.setHex(col);m.material.emissive.setHex(col);m.material.emissiveIntensity=n.act?ei:.1;m.scale.setScalar((n.type==='hidden'?.28:.35)*(1+.25*act));}vm.sMat.opacity=.05+.12*(all.length>0?ac/all.length:0);vm.sMat.emissiveIntensity=.15+.5*(all.length>0?ac/all.length:0);vm.ringMat.opacity=selId===sph.id?.4+.2*Math.sin(B.t*.04):0;if(B.steps%10===0)for(const tm of vm.sM){const syn=tm.userData.syn;if(!syn||syn.int<=0){tm.visible=false;continue;}tm.visible=true;const tw=syn.wf+syn.ws,c=tw>.08?0x00ff88:(tw<-.08?0xff4488:0x7799bb);tm.material.color.setHex(c);tm.material.emissive.setHex(c);tm.material.emissiveIntensity=.4+.6*Math.min(Math.abs(tw),1);tm.material.opacity=.6+.3*Math.min(Math.abs(tw),1);}}
function spawnIntra(){for(const si in B.spheres){const sph=B.spheres[si],vm=VM[si];if(!vm||vm.sM.length===0)continue;for(const mk of['DA','5HT','ACh','NA']){if(Math.random()>sph.nm[mk]*1.5)continue;const sm=vm.sM[~~(Math.random()*vm.sM.length)];if(!sm||!sm.userData.curve)continue;const sp=new THREE.Sprite(new THREE.SpriteMaterial({map:emoTex[mk],transparent:true,opacity:.8,depthTest:false}));sp.scale.set(.5,.5,.5);vm.group.add(sp);iParts.push({sp,curve:sm.userData.curve,prog:Math.random()*.2,spd:.008+.02*sph.nm[mk]+Math.random()*.005,grp:vm.group});}}}
// Cache for flow emoji textures (by emoji char)
const flowEmoCache={};
function getFlowEmoTex(emoji){
 if(flowEmoCache[emoji])return flowEmoCache[emoji];
 const c=document.createElement('canvas');c.width=64;c.height=64;
 const x=c.getContext('2d');x.font='48px serif';x.textAlign='center';x.textBaseline='middle';x.fillText(emoji,32,34);
 flowEmoCache[emoji]=new THREE.CanvasTexture(c);return flowEmoCache[emoji];
}
function spawnInter(){for(const li in B.links){const lv=LVM[li];if(!lv)continue;const src=B.spheres[lv.link.si];if(!src)continue;let tA=0;src.outP.forEach(nid=>{const n=fN(src,nid);if(n)tA+=Math.abs(n.state);});
const spawnChance=.15+tA*.2;
if(Math.random()<spawnChance){const srcEmoji=src._customEmoji||ST[src.type]?.emoji||'โš™';const tex=getFlowEmoTex(srcEmoji);const sp=new THREE.Sprite(new THREE.SpriteMaterial({map:tex,transparent:true,opacity:.9,depthTest:false}));const sz=1.2+tA*.4;sp.scale.set(sz,sz,sz);sp.renderOrder=500;world.add(sp);eParts.push({sp,curve:lv.curve,prog:0,spd:.006+Math.random()*.012+tA*.003});}}}
function updParts(dt){for(let i=iParts.length-1;i>=0;i--){const p=iParts[i];p.prog+=p.spd*(dt/16.67);if(p.prog>=1){p.grp.remove(p.sp);p.sp.material.dispose();iParts.splice(i,1);continue;}p.sp.position.copy(p.curve.getPoint(p.prog));p.sp.material.opacity=.8*Math.sin(p.prog*Math.PI);}for(let i=eParts.length-1;i>=0;i--){const p=eParts[i];p.prog+=p.spd*(dt/16.67);if(p.prog>=1){world.remove(p.sp);p.sp.material.dispose();eParts.splice(i,1);continue;}p.sp.position.copy(p.curve.getPoint(p.prog));p.sp.position.y+=Math.sin(p.prog*12)*.3;const s=1.0+.8*Math.sin(p.prog*Math.PI);p.sp.scale.set(s,s,s);p.sp.material.opacity=.95*Math.sin(p.prog*Math.PI);}}
function updBrain(){if(!brainG)return;const t=performance.now()*.0003;let tA=0,cnt=0;for(const si in B.spheres){[...B.spheres[si].neu.input,...B.spheres[si].neu.hidden,...B.spheres[si].neu.output].forEach(n=>{tA+=Math.abs(n.state);cnt++;});}const act=cnt>0?tA/cnt:0;brainG.children.forEach((c,i)=>{if(c.material&&c.material.opacity!==undefined){const base=c.material.wireframe?.05:.12;c.material.opacity=base+.08*act+.015*Math.sin(t+i);}});}
let lastT=performance.now();function loop(ts){requestAnimationFrame(loop);const dt=ts-lastT;lastT=ts;for(const si in B.spheres)updSV(B.spheres[si]);updParts(dt);updBrain();orb.update();const cv=E('c3d'),r=cv.getBoundingClientRect(),w=Math.max(1,~~r.width),h=Math.max(1,~~r.height);if(cv.width!==w||cv.height!==h){cam.aspect=w/h;cam.updateProjectionMatrix();rnd.setSize(w,h,false);}rnd.render(scene,cam);}
// โ•โ•โ• INTERACTION (Layout mode toggle + Click + Link) โ•โ•โ•
let layoutMode=false,dragging=null,didDrag=false,dragPlane=new THREE.Plane(),dragOff=new THREE.Vector3(),dragPt=new THREE.Vector3();
function togLayout(){layoutMode=!layoutMode;E('layout-btn').classList.toggle('on',layoutMode);E('c3d').classList.toggle('layout-on',layoutMode);if(E('m-layout'))E('m-layout').classList.toggle('on',layoutMode);
 orb.enabled=!layoutMode;E('c3d').style.cursor=layoutMode?'crosshair':'';
 if(layoutMode){orb.autoRotate=false;E('rot-btn').classList.remove('on');}
 toast(layoutMode?'โœ‹ Layout mode ON โ€” drag spheres':'๐Ÿ”„ Orbit mode โ€” rotate view','ok');}
function getMouseXY(e){const cv=E('c3d'),rc=cv.getBoundingClientRect();mouse.x=((e.clientX-rc.left)/rc.width)*2-1;mouse.y=-((e.clientY-rc.top)/rc.height)*2+1;}
function hitSphere(){const shells=Object.entries(VM).map(([id,vm])=>({id,mesh:vm.shell}));const hits=ray.intersectObjects(shells.map(s=>s.mesh));if(hits.length>0){const f=shells.find(s=>s.mesh===hits[0].object);return f||null;}return null;}
function onDown(e){if(e.button!==0)return;getMouseXY(e);ray.setFromCamera(mouse,cam);
 if(layoutMode&&!linkMode){const f=hitSphere();
 if(f){dragging=f.id;didDrag=false;const g=VM[f.id].group;
 dragPlane.setFromNormalAndCoplanarPoint(cam.getWorldDirection(new THREE.Vector3()).negate(),g.position);
 ray.ray.intersectPlane(dragPlane,dragPt);dragOff.copy(g.position).sub(dragPt);E('c3d').style.cursor='grabbing';}}}
function onMove(e){if(!dragging)return;didDrag=true;getMouseXY(e);ray.setFromCamera(mouse,cam);
 if(ray.ray.intersectPlane(dragPlane,dragPt)){const np=dragPt.add(dragOff);VM[dragging].group.position.copy(np);B.spheres[dragging].pos={x:np.x,y:np.y,z:np.z};}}
function onUp(e){if(dragging){const sid=dragging;dragging=null;E('c3d').style.cursor=layoutMode?'crosshair':'';
 for(const li in B.links){const l=B.links[li];if(l.si===sid||l.ti===sid){rmLV(li);buildLV(l);}}
 if(!didDrag){selSph(sid);}}didDrag=false;}
function onClick(e){if(didDrag){didDrag=false;return;}getMouseXY(e);ray.setFromCamera(mouse,cam);const f=hitSphere();
 if(f){if(linkMode){if(!linkSrc){linkSrc=f.id;toast(`Source: ${B.spheres[f.id].label}. Click target.`,'ok');}
 else if(f.id!==linkSrc){const l=mkLink(linkSrc,f.id,'feedforward');if(l){B.links[l.id]=l;buildLV(l);updLL();toast('Link created!','ok');}linkMode=false;linkSrc=null;E('lnk-tool').classList.remove('on');}return;}
 if(!layoutMode||!didDrag)selSph(f.id);}
 else{if(!linkMode)selSph(null);}}
function onDbl(e){getMouseXY(e);ray.setFromCamera(mouse,cam);if(!hitSphere())addSphereUI();}
function selSph(id){selId=id;updSL();if(id)showDet(id);stab('detail',document.querySelectorAll('.tab')[3]);}
function startLinking(){linkMode=!linkMode;linkSrc=null;E('lnk-tool').classList.toggle('on',linkMode);if(E('m-lnk'))E('m-lnk').classList.toggle('on',linkMode);if(linkMode)toast('Tap source sphere, then target','ok');}
// โ•โ•โ• UI โ•โ•โ•
function updHUD(){let tN=0,tS=0,tE=0,tA=0,tRealN=0;for(const si in B.spheres){const s=B.spheres[si];const a=[...s.neu.input,...s.neu.hidden,...s.neu.output];tN+=a.length;tS+=s.syn.length;tE+=s.nrg;tA+=a.filter(n=>n.state!==0).length;if(s._realNeurons)tRealN+=s._realNeurons;}const neuDisp=tRealN>0?(tRealN.toLocaleString()+' <span style="font-size:7px;color:var(--dim);">('+tN+' sim)</span>'):tN;E('s-sph').textContent=Object.keys(B.spheres).length;E('s-lnk').textContent=Object.keys(B.links).length;E('s-neu').innerHTML=neuDisp;E('s-syn').textContent=tS;E('s-time').textContent=B.t.toFixed(1);E('s-steps').textContent=B.steps;E('s-nrg').textContent=tE.toFixed(2);E('s-act').textContent=tA;const rd=E('r-disp');if(rd&&rd.children.length===0)for(const n of['D1','D2','5HT1A','5HT2A','5HT4','M1','M2','ฮฒ1','ฮฑ2']){const d=document.createElement('div');d.style.cssText='padding:2px 3px;border-radius:3px;font-family:var(--mono);font-size:8px;text-align:center;background:var(--bg);border:1px solid var(--border);';d.innerHTML=`<div style="font-weight:600;color:var(--bright)">${n}</div><div class="rv" style="color:var(--cyan)">0</div>`;rd.appendChild(d);}const rn=['D1','D2','5HT1A','5HT2A','5HT4','M1','M2','beta1','alpha2'];rd.querySelectorAll('.rv').forEach((el,i)=>{el.textContent=(B.R[rn[i]]||0).toFixed(2);});const od=E('osc-disp');if(od&&od.children.length===0)for(const b of['infraslow','slow','theta','alpha','gamma']){const bar=document.createElement('div');bar.style.cssText='flex:1;border-radius:2px 2px 0 0;background:linear-gradient(to top,var(--cyan),var(--teal));min-height:2px;opacity:.7;transition:height .1s;';bar.id='ob-'+b;od.appendChild(bar);}for(const b of['infraslow','slow','theta','alpha','gamma']){const el=E('ob-'+b);if(el)el.style.height=(3+25*Math.abs(Math.sin(B.osc[b]||0)))+'px';}}
function updSL(){const c=E('sph-list');c.innerHTML='';for(const sph of Object.values(B.spheres).sort((a,b)=>a.layerId.localeCompare(b.layerId))){const a=[...sph.neu.input,...sph.neu.hidden,...sph.neu.output];const d=document.createElement('div');d.className='sc'+(selId===sph.id?' sel':'');const nDisp=sph._realNeurons?(sph._realNeurons.toLocaleString()+'n'):a.length+'n';d.innerHTML=`<div class="sct"><div class="dot" style="background:${sph.color.css}"></div><span class="sn">${sph._customEmoji||ST[sph.type]?.emoji||'โš™'} ${sph.label}</span><span class="sl">${sph.layerId}</span></div><div class="si">${nDisp} ยท ${sph.syn.length}s ยท ${a.filter(n=>n.state!==0).length} act</div>`;d.onclick=()=>selSph(sph.id);c.appendChild(d);}}
function updLL(){const c=E('lnk-list');c.innerHTML='';for(const li in B.links){const l=B.links[li];const d=document.createElement('div');d.className='lc';d.innerHTML=`<span class="lp">${(B.spheres[l.si]||{}).label||'?'} โ†’ ${(B.spheres[l.ti]||{}).label||'?'}</span><span class="lt">[${l.type.toUpperCase()}]</span><button class="btn btn-r" style="padding:1px 5px;font-size:.65em;margin-left:auto;" onclick="rmLink('${li}')">ร—</button>`;c.appendChild(d);}}
function showDet(sid){const sph=B.spheres[sid];if(!sph)return;const a=[...sph.neu.input,...sph.neu.hidden,...sph.neu.output];
const EMOJIS=['๐Ÿ‘','๐Ÿ‘‚','๐Ÿ–','๐Ÿ”„','๐Ÿงฉ','๐Ÿ’ช','๐Ÿง ','โš™','๐ŸŒ','๐Ÿ’Ž','๐Ÿ”ฅ','โญ','๐ŸŽฏ','๐Ÿซ€','๐Ÿฆ ','๐Ÿงฌ','๐Ÿ“ก','๐Ÿ”ฎ','๐ŸŒŠ','โšก','๐ŸŽญ','๐Ÿช','๐Ÿงช','๐Ÿ›'];
E('det-c').innerHTML=`
<div class="sec"><div class="st" style="color:${sph.color.css}">Sphere Settings</div>
 <div style="margin-bottom:6px;">
 <label style="font-size:.65em;color:var(--dim);">Name</label>
 <input type="text" id="det-name" value="${sph.label}" style="width:100%;padding:4px 6px;background:var(--bg);border:1px solid var(--border);border-radius:4px;color:var(--bright);font-family:var(--font);font-size:.75em;margin-top:2px;">
 </div>
 <div style="margin-bottom:6px;">
 <label style="font-size:.65em;color:var(--dim);">Emoji Icon</label>
 <div id="det-emoji-grid" style="display:flex;flex-wrap:wrap;gap:2px;margin-top:3px;"></div>
 </div>
 <div style="margin-bottom:6px;">
 <label style="font-size:.65em;color:var(--dim);">Type</label>
 <select id="det-type" style="width:100%;padding:3px 5px;background:var(--bg);border:1px solid var(--border);border-radius:4px;color:var(--bright);font-size:.7em;margin-top:2px;">
 ${Object.entries(ST).map(([k,v])=>`<option value="${k}" ${k===sph.type?'selected':''}>${v.emoji} ${v.label}</option>`).join('')}
 </select>
 </div>
</div>
<div class="sec"><div class="st">Network Architecture</div>
 <div style="display:grid;grid-template-columns:1fr;gap:5px;">
 <div style="display:flex;align-items:center;gap:6px;">
 <label style="font-size:.65em;color:var(--dim);min-width:55px;">Input <span style="color:var(--cyan);font-family:var(--mono);" id="det-nI-v">${sph.nI}</span></label>
 <input type="range" id="det-nI" min="1" max="10" value="${sph.nI}" style="flex:1;height:3px;background:var(--border);border-radius:2px;-webkit-appearance:none;outline:none;">
 </div>
 <div style="display:flex;align-items:center;gap:6px;">
 <label style="font-size:.65em;color:var(--dim);min-width:55px;">Hidden <span style="color:var(--purple);font-family:var(--mono);" id="det-nH-v">${sph.nH}</span></label>
 <input type="range" id="det-nH" min="5" max="100" value="${sph.nH}" style="flex:1;height:3px;background:var(--border);border-radius:2px;-webkit-appearance:none;outline:none;">
 </div>
 <div style="display:flex;align-items:center;gap:6px;">
 <label style="font-size:.65em;color:var(--dim);min-width:55px;">Output <span style="color:var(--red);font-family:var(--mono);" id="det-nO-v">${sph.nO}</span></label>
 <input type="range" id="det-nO" min="1" max="10" value="${sph.nO}" style="flex:1;height:3px;background:var(--border);border-radius:2px;-webkit-appearance:none;outline:none;">
 </div>
 <div style="font-size:.58em;color:var(--dim);font-style:italic;">Total: <span id="det-nT" style="color:var(--bright)">${a.length}</span> neurons ยท Changing rebuilds the network</div>
 </div>
</div>
<div style="margin-bottom:8px;">
 <button class="btn btn-p" onclick="applySphSettings('${sid}')" style="width:100%;justify-content:center;">Apply Changes</button>
</div>
<div class="sec"><div class="st">Status</div>
 <div style="display:grid;grid-template-columns:1fr 1fr;gap:3px;font-size:.7em;font-family:var(--mono);">
 <div>Neurons: <span style="color:var(--bright)">${sph._realNeurons?sph._realNeurons.toLocaleString():a.length}</span></div>
 <div>Synapses: <span style="color:var(--bright)">${sph.syn.length}</span></div>
 <div>Exc: <span style="color:var(--green)">${a.filter(n=>n.state===1).length}</span></div>
 <div>Inh: <span style="color:var(--red)">${a.filter(n=>n.state===-1).length}</span></div>
 <div>Energy: <span style="color:var(--cyan)">${sph.nrg.toFixed(2)}</span></div>
 <div>Layer: <span style="color:var(--cyan)">${sph.layerId}</span></div>
 ${sph._realNeurons?'<div style="grid-column:span 2;margin-top:3px;padding:3px 5px;background:rgba(0,230,176,0.06);border:1px solid rgba(0,230,176,0.15);border-radius:4px;font-size:.9em;"><span style="color:var(--teal);">Connectome region</span> ยท '+sph._realNeurons.toLocaleString()+' biological neurons<br><span style="color:var(--dim);font-size:.85em;">Sim: '+a.length+' neurons (proportional representation)</span></div>':''}
 </div>
</div>
<div class="sec"><div class="st">Inputs (Click to toggle)</div><div id="di" style="display:grid;grid-template-columns:repeat(auto-fill,minmax(48px,1fr));gap:2px;"></div></div>
<div class="sec"><div class="st">Outputs</div><div id="do2" style="display:grid;grid-template-columns:repeat(auto-fill,minmax(48px,1fr));gap:2px;"></div></div>
<div class="br" style="margin-top:6px;"><button class="btn btn-r" onclick="rmSph('${sid}')">๐Ÿ—‘ Delete</button><button class="btn" style="border-color:var(--gold);color:var(--gold);" onclick="exportSphere('${sid}')">๐Ÿ“ค Export</button></div>`;
// Slider live preview
['nI','nH','nO'].forEach(k=>{const sl=E('det-'+k),vl=E('det-'+k+'-v'),tl=E('det-nT');if(sl)sl.oninput=()=>{vl.textContent=sl.value;const ni=parseInt(E('det-nI').value),nh=parseInt(E('det-nH').value),no=parseInt(E('det-nO').value);tl.textContent=ni+nh+no;};});
// Style range thumbs
document.querySelectorAll('#det-nI,#det-nH,#det-nO').forEach(sl=>{sl.style.cssText+=';-webkit-appearance:none;height:3px;background:var(--border);border-radius:2px;outline:none;';});
// Emoji grid
const eg=E('det-emoji-grid');sph._customEmoji=sph._customEmoji||ST[sph.type]?.emoji||'โš™';
EMOJIS.forEach(em=>{const b=document.createElement('button');b.textContent=em;b.style.cssText=`width:26px;height:26px;border:1px solid ${em===sph._customEmoji?'var(--cyan)':'var(--border)'};border-radius:4px;background:${em===sph._customEmoji?'rgba(60,180,255,.15)':'var(--bg)'};font-size:14px;cursor:pointer;padding:0;line-height:1;`;
 b.onclick=()=>{sph._customEmoji=em;showDet(sid);};eg.appendChild(b);});
// Inputs
sph.neu.input.forEach((n,i)=>{const b=document.createElement('button');b.className='btn';b.style.cssText='padding:3px;font-size:.65em;font-family:var(--mono);';setIB(b,n,i);b.onclick=()=>{n.state=n.state===0?1:(n.state===1?-1:0);n.pot=n.state*.5;setIB(b,n,i);};E('di').appendChild(b);});
sph.neu.output.forEach((n,i)=>{const d=document.createElement('div');d.style.cssText=`padding:3px;font-size:.65em;font-family:var(--mono);text-align:center;border-radius:3px;border:1px solid var(--border);background:var(--bg);color:${n.state===1?'var(--green)':(n.state===-1?'var(--red)':'var(--dim)')};`;d.textContent=`O${i}:${n.state}`;E('do2').appendChild(d);});}
function applySphSettings(sid){
 const sph=B.spheres[sid];if(!sph)return;
 const newName=E('det-name')?.value||sph.label;
 const newType=E('det-type')?.value||sph.type;
 const newEmoji=sph._customEmoji||ST[newType]?.emoji||'โš™';
 const newNI=parseInt(E('det-nI')?.value)||sph.nI;
 const newNH=parseInt(E('det-nH')?.value)||sph.nH;
 const newNO=parseInt(E('det-nO')?.value)||sph.nO;
 const needsRebuild=(newNI!==sph.nI||newNH!==sph.nH||newNO!==sph.nO);
 sph.label=newName;sph.type=newType;sph.color=ST[newType]||ST.custom;
 if(needsRebuild){
 // Rebuild neurons and synapses from scratch with new counts
 rebuildSphNetwork(sph,newNI,newNH,newNO);
 }
 // Rebuild visual
 rmSV(sid);buildSV(sph);
 updSphEmoji(sid,newEmoji);
 // Rebuild connected links (port IDs may have changed)
 for(const li in B.links){const l=B.links[li];if(l.si===sid||l.ti===sid){
 // Update weight matrices if port counts changed
 if(needsRebuild)rebuildLinkWeights(l);
 rmLV(li);buildLV(l);}}
 updSL();updHUD();showDet(sid);toast(`Updated: ${newName}${needsRebuild?' (network rebuilt)':''}`,'ok');
}
function rebuildSphNetwork(sph,nI,nH,nO){
 let ni=0;const neu={input:[],hidden:[],output:[]};
 for(let i=0;i<nI;i++)neu.input.push(mkN(ni++,'input'));
 for(let i=0;i<nH;i++)neu.hidden.push(mkN(ni++,'hidden'));
 for(let i=0;i<nO;i++)neu.output.push(mkN(ni++,'output'));
 const all=[...neu.input,...neu.hidden,...neu.output],N=all.length;
 // Shuffle for ring to interleave types
 const idx=Array.from({length:N},(_,i)=>i);for(let i=N-1;i>0;i--){const j=~~(Math.random()*(i+1));[idx[i],idx[j]]=[idx[j],idx[i]];}
 const ring=idx.map(i=>all[i]);
 // Scale k: 30% of N, minimum 6
 const k=Math.min(Math.max(6,Math.round(N*.3)),N-1),hk=Math.max(~~(k/2),1);
 const edges=new Set();
 for(let i=0;i<N;i++)for(let j=1;j<=hk;j++)for(const t of[(i+j)%N,(i-j+N)%N])if(!(ring[i].type==='output'&&ring[t].type==='input')&&i!==t)edges.add(ring[i].id+'-'+ring[t].id);
 const ea=[...edges];for(const e of ea)if(Math.random()<.35){edges.delete(e);const src=ring[~~(Math.random()*N)],tgt=ring[~~(Math.random()*N)];if(src.id!==tgt.id&&!edges.has(src.id+'-'+tgt.id)&&!(src.type==='output'&&tgt.type==='input'))edges.add(src.id+'-'+tgt.id);else edges.add(e);}
 const syn=[];for(const e of edges){const[a,b]=e.split('-').map(Number);syn.push(mkSy(a,b));}
 sph.neu=neu;sph.syn=syn;sph.nI=nI;sph.nH=nH;sph.nO=nO;
 sph.inP=neu.input.map(n=>n.id);sph.outP=neu.output.map(n=>n.id);
 sph.nrg=0;sph.time=0;
}
function rebuildLinkWeights(l){
 const src=B.spheres[l.si],tgt=B.spheres[l.ti];if(!src||!tgt)return;
 const W=[];for(let r=0;r<src.outP.length;r++){const row=[];for(let c=0;c<tgt.inP.length;c++)row.push((Math.random()-.3)*.5);W.push(row);}
 l.W=W;
}
function updSphEmoji(sid,emoji){
 const vm=VM[sid];if(!vm)return;
 // Safely collect and remove ALL old emoji sprites
 const toRemove=[];
 vm.group.children.forEach(c=>{if(c.userData&&c.userData.isEmojiIcon)toRemove.push(c);});
 toRemove.forEach(c=>{vm.group.remove(c);if(c.material){if(c.material.map)c.material.map.dispose();c.material.dispose();}});
 // Create new emoji texture
 const cv2=document.createElement('canvas');cv2.width=128;cv2.height=128;
 const cx=cv2.getContext('2d');cx.font='96px serif';cx.textAlign='center';cx.textBaseline='middle';cx.fillText(emoji,64,68);
 const tex=new THREE.CanvasTexture(cv2);
 const sp=new THREE.Sprite(new THREE.SpriteMaterial({map:tex,transparent:true,opacity:.9,depthTest:false}));
 sp.scale.set(3.5,3.5,1);sp.position.y=vm.R+3.5;sp.renderOrder=999;sp.userData.isEmojiIcon=true;vm.group.add(sp);
}
function setIB(b,n,i){const cs={1:{bg:'rgba(0,220,80,.12)',bc:'var(--green)',c:'var(--green)'},'-1':{bg:'rgba(255,50,80,.12)',bc:'var(--red)',c:'var(--red)'},0:{bg:'var(--bg)',bc:'var(--border)',c:'var(--dim)'}};const s=cs[n.state];b.style.background=s.bg;b.style.borderColor=s.bc;b.style.color=s.c;b.textContent=`I${i}:${n.state>0?'+1':(n.state<0?'-1':'0')}`;}
// โ•โ•โ• ACTIONS โ•โ•โ•
function addSphereUI(){const types=Object.keys(ST),type=types[sCtr%types.length],id='S'+sCtr++,a=sCtr*1.1,dist=14+Math.random()*8;const sph=mkSphere(id,type,{x:Math.cos(a)*dist,y:(Math.random()-.5)*8,z:Math.sin(a)*dist},{label:ST[type].label});B.spheres[id]=sph;buildSV(sph);updSL();updHUD();selSph(id);toast(`Added: ${sph.label}`,'ok');}
function rmSph(sid){for(const li in B.links)if(B.links[li].si===sid||B.links[li].ti===sid){rmLV(li);delete B.links[li];}rmSV(sid);delete B.spheres[sid];if(selId===sid)selId=null;updSL();updLL();updHUD();toast('Removed','ok');}
function rmSV(sid){const vm=VM[sid];if(vm){world.remove(vm.group);delete VM[sid];}}function rmLV(li){const lv=LVM[li];if(lv){world.remove(lv.tube);world.remove(lv.core);if(lv.glow)world.remove(lv.glow);if(lv.axons)lv.axons.forEach(a=>world.remove(a));delete LVM[li];}}function rmLink(li){rmLV(li);delete B.links[li];updLL();toast('Link removed','ok');}function deleteSelected(){if(selId)rmSph(selId);}
function togSim(){simOn=!simOn;const b=E('btn-play');if(simOn){b.classList.add('run');b.textContent='โธ';const hz=parseInt(E('spd-sl').value);simIv=setInterval(simStep,Math.max(10,1000/hz));}else{b.classList.remove('run');b.textContent='โ–ถ';if(simIv){clearInterval(simIv);simIv=null;}}}
function stepOnce(){if(!simOn)simStep();}function resetSim(){if(simOn)togSim();for(const si in B.spheres){const s=B.spheres[si];[...s.neu.input,...s.neu.hidden,...s.neu.output].forEach(n=>{n.state=0;n.pot=0;n.st=0;n.ch=0;n.adapt=0;n.auto=0;n.ast=0;});s.time=0;s.nrg=0;}B.t=0;B.steps=0;updHUD();toast('Reset','ok');}
E('spd-sl').addEventListener('input',e=>{const hz=parseInt(e.target.value);E('spd').textContent=hz+' Hz';if(simOn){clearInterval(simIv);simIv=setInterval(simStep,Math.max(10,1000/hz));}});
['da','5ht','ach','na'].forEach(k=>{const m={da:'DA','5ht':'5HT',ach:'ACh',na:'NA'};E('nm-'+k).addEventListener('input',e=>{const v=parseFloat(e.target.value);E('nv-'+k).textContent=v.toFixed(2);B.gNM[m[k]]=v;});});
function saveBrain(){const d={v:'2.0-multi',spheres:{},links:{},gNM:B.gNM,t:B.t,steps:B.steps};for(const si in B.spheres){const s=B.spheres[si];d.spheres[si]={id:s.id,type:s.type,label:s.label,layerId:s.layerId,pos:s.pos,nI:s.nI,nH:s.nH,nO:s.nO,neu:s.neu,syn:s.syn,inP:s.inP,outP:s.outP,nrg:s.nrg,time:s.time};}for(const li in B.links)d.links[li]=B.links[li];dl(JSON.stringify(d),'neuraxon_multi_brain.json');toast('Brain saved!','ok');}
function exportSphere(sid){sid=sid||selId;if(!sid||!B.spheres[sid])return toast('Select sphere','er');const s=B.spheres[sid];dl(JSON.stringify({v:'2.0-sphere',id:s.id,type:s.type,label:s.label,nI:s.nI,nH:s.nH,nO:s.nO,neu:s.neu,syn:s.syn}),`sphere_${s.label.replace(/\s+/g,'_')}.json`);toast('Exported!','ok');}
/* ===== Neuraxon-Life (NxEr) interoperability ===== */
/* Detects a Neuraxon-Life server export ({name,params,brain,stats}) and converts
 it into this builder's native {v,spheres,links,gNM,t,steps} format. The export
 stores inter-sphere links (with real weight matrices) but often ships an EMPTY
 brain.spheres map โ€” spheres exist only as ids referenced inside links. We rebuild
 each sphere, inferring neuron counts from the links, and transpose the weight
 matrices (Neuraxon stores [input x output]; this builder expects [output x input]). */
function looksNeuraxon(d){
 if(!d||typeof d!=='object')return false;
 if(d.spheres&&d.v&&String(d.v).indexOf('2.0')===0)return false; // already native builder format
 if(d.brain&&typeof d.brain==='object')return true;
 if(d.global_neuromodulators||d.layers)return true;
 if(d.params&&(d.links||d.stats))return true;
 if(d.links){for(const k in d.links){return !!(d.links[k]&&d.links[k].source_sphere_id);}}
 return false;
}
function convertNeuraxon(d){
 const brain=d.brain||d, P=d.params||{};
 const links=brain.links||{}, srcSpheres=brain.spheres||{};
 const NXTYPE={feedforward:1,feedback:1,lateral:1,recurrent:1};
 const ROLE={
 sensory: {type:'sensory_somatosensory',layer:'L0',depth:0,label:'Sensory Hub'},
 visual: {type:'sensory_visual', layer:'L0',depth:0,label:'Visual'},
 auditory: {type:'sensory_auditory', layer:'L0',depth:0,label:'Auditory'},
 intero: {type:'sensory_somatosensory', layer:'L0',depth:0,label:'Interoceptive'},
 assoc_fluid:{type:'association', layer:'L1',depth:1,label:'Assoc ยท Fluid'},
 assoc_cryst:{type:'executive', layer:'L2',depth:2,label:'Assoc ยท Cryst'},
 motor: {type:'motor', layer:'L3',depth:3,label:'Motor'},
 peer: {type:'custom', layer:'L1',depth:1,label:'Peer'}
 };
 const roleOf=id=>{
 if(ROLE[id])return ROLE[id];
 if(/motor/.test(id))return {type:'motor',layer:'L3',depth:3,label:id};
 if(/assoc|association/.test(id))return {type:'association',layer:'L1',depth:1,label:id};
 if(/visual|audi|sensor|intero|somat|touch|smell|taste/.test(id))return {type:'sensory_somatosensory',layer:'L0',depth:0,label:id};
 if(/exec|pfc|prefront/.test(id))return {type:'executive',layer:'L2',depth:2,label:id};
 return {type:'custom',layer:'L1',depth:1,label:id};
 };
 // collect sphere ids (from spheres map + everything referenced by links)
 const ids=new Set(Object.keys(srcSpheres));
 for(const lid in links){const L=links[lid];if(L.source_sphere_id)ids.add(L.source_sphere_id);if(L.target_sphere_id)ids.add(L.target_sphere_id);}
 // infer neuron I/O counts per sphere from link connectivity
 const need={};ids.forEach(id=>need[id]={nO:0,nI:0});
 for(const lid in links){
 const L=links[lid],wm=L.weight_matrix||[];
 const soc=(L.source_output_ids||[]).length||(wm[0]?wm[0].length:0);
 const tic=(L.target_input_ids||[]).length||wm.length;
 if(need[L.source_sphere_id])need[L.source_sphere_id].nO=Math.max(need[L.source_sphere_id].nO,soc);
 if(need[L.target_sphere_id])need[L.target_sphere_id].nI=Math.max(need[L.target_sphere_id].nI,tic);
 }
 const hiddenFor=id=>{
 if(/assoc|association/.test(id))return P.ms_association_hidden||P.num_hidden_neurons||16;
 if(/motor/.test(id))return P.ms_motor_hidden||P.num_hidden_neurons||8;
 if(/visual|audi|sensor|intero|somat/.test(id))return P.ms_sensory_hidden||P.num_hidden_neurons||12;
 return P.num_hidden_neurons||14;
 };
 // layout: bucket spheres by depth, spread them out
 const idArr=[...ids],byDepth={};
 idArr.forEach(id=>{const dp=roleOf(id).depth;(byDepth[dp]=byDepth[dp]||[]).push(id);});
 const pos={};
 Object.keys(byDepth).forEach(dp=>{
 const arr=byDepth[dp],n=arr.length;
 arr.forEach((id,i)=>{
 const x=(Number(dp)-1.5)*18;
 const z=(n===1)?0:((i/(n-1))-0.5)*Math.max(20,n*9);
 const y=Math.max(-9,Math.min(9,(i%2?1:-1)*i*2.2));
 pos[id]={x,y,z};
 });
 });
 // build spheres (mkSphere generates valid neu/syn/inP/outP for render + sim)
 const spheres={};
 idArr.forEach(id=>{
 const role=roleOf(id),sd=srcSpheres[id]||{};
 const nO=Math.max(need[id].nO,3),nI=Math.max(need[id].nI,3),nH=hiddenFor(id);
 const label=sd.label||sd.name||role.label||id;
 spheres[id]=mkSphere(id,role.type,pos[id],{nI,nH,nO,label,layerId:role.layer});
 });
 // build links (transpose weight matrix; map link kind -> builder link type)
 const outLinks={};
 for(const lid in links){
 const L=links[lid],si=L.source_sphere_id,ti=L.target_sphere_id;
 if(!spheres[si]||!spheres[ti])continue;
 const wm=L.weight_matrix||[],rows=wm.length,cols=rows&&wm[0]?wm[0].length:0,W=[];
 for(let c=0;c<cols;c++){const row=[];for(let rr=0;rr<rows;rr++)row.push(+wm[rr][c]||0);W.push(row);}
 let type=(L.params&&L.params.kind)||L.kind||'';
 if(!NXTYPE[type]){const ds=roleOf(si).depth,dt=roleOf(ti).depth;type=si===ti?'recurrent':(ds<dt?'feedforward':(ds>dt?'feedback':'lateral'));}
 const pr=(L.params&&L.params.plasticity_rate!=null)?L.params.plasticity_rate:0.005;
 outLinks[lid]={id:lid,si,ti,type,W,pr};
 }
 const g=brain.global_neuromodulators||{},pick=(v,f)=>v!=null?v:f;
 const gNM={DA:pick(g.dopamine,.15),'5HT':pick(g.serotonin,.15),ACh:pick(g.acetylcholine,.15),NA:pick(g.norepinephrine,.15)};
 return {v:'2.0-multi-converted',spheres,links:outLinks,gNM,t:brain.time||0,steps:brain.step_count||0,_nxName:d.name||brain.name||'NxEr'};
}
function loadBrain(inp){const f=inp.files[0];if(!f)return;inp.value='';const r=new FileReader();r.onload=ev=>{try{let d=JSON.parse(ev.target.result);if(looksNeuraxon(d))d=convertNeuraxon(d);clearBrain();B.gNM=d.gNM||{DA:.15,'5HT':.15,ACh:.15,NA:.15};B.t=d.t||0;B.steps=d.steps||0;for(const si in d.spheres){const sd=d.spheres[si],type=sd.type||'custom',col=ST[type]||ST.custom;const sph={id:sd.id,type,label:sd.label,layerId:sd.layerId||'L0',pos:sd.pos||{x:0,y:0,z:0},color:col,neu:sd.neu,syn:sd.syn||[],nm:{DA:.15,'5HT':.15,ACh:.15,NA:.15},ph:{DA:0,'5HT':0,ACh:0,NA:0},osc:{infraslow:Math.random()*6.28,slow:Math.random()*6.28,theta:Math.random()*6.28,alpha:Math.random()*6.28,gamma:Math.random()*6.28},nI:sd.nI,nH:sd.nH,nO:sd.nO,inP:sd.inP||sd.neu.input.map(n=>n.id),outP:sd.outP||sd.neu.output.map(n=>n.id),nrg:sd.nrg||0,time:sd.time||0};B.spheres[si]=sph;buildSV(sph);}for(const li in d.links){B.links[li]=d.links[li];buildLV(d.links[li]);}sCtr=Object.keys(B.spheres).length;updSL();updLL();updHUD();if(typeof resetCam==='function')resetCam();const conv=d.v&&String(d.v).indexOf('converted')>=0;toast(conv?('Neuraxon model loaded: '+(d._nxName||'NxEr')+' ยท '+sCtr+' spheres, '+Object.keys(B.links).length+' links'):'Loaded!','ok');}catch(err){toast('Error: '+err.message,'er');}};r.readAsText(f);}
function importSphere(inp){const f=inp.files[0];if(!f)return;inp.value='';const r=new FileReader();r.onload=ev=>{try{const d=JSON.parse(ev.target.result),id='S'+sCtr++,type=d.type||'custom',col=ST[type]||ST.custom,a=sCtr*1.1,dist=14+Math.random()*8;const sph={id,type,label:d.label||'Imported',layerId:'L0',pos:{x:Math.cos(a)*dist,y:(Math.random()-.5)*8,z:Math.sin(a)*dist},color:col,neu:d.neu,syn:d.syn||[],nm:{DA:.15,'5HT':.15,ACh:.15,NA:.15},ph:{DA:0,'5HT':0,ACh:0,NA:0},osc:{infraslow:Math.random()*6.28,slow:Math.random()*6.28,theta:Math.random()*6.28,alpha:Math.random()*6.28,gamma:Math.random()*6.28},nI:d.nI||d.neu.input.length,nH:d.nH||d.neu.hidden.length,nO:d.nO||d.neu.output.length,inP:d.neu.input.map(n=>n.id),outP:d.neu.output.map(n=>n.id),nrg:0,time:0};B.spheres[id]=sph;buildSV(sph);updSL();updHUD();selSph(id);toast('Imported!','ok');}catch(err){toast('Error','er');}};r.readAsText(f);}
function clearBrain(){if(simOn)togSim();for(const li in B.links)rmLV(li);for(const si in B.spheres)rmSV(si);B.spheres={};B.links={};B.t=0;B.steps=0;selId=null;iParts.forEach(p=>{p.grp.remove(p.sp);p.sp.material.dispose();});iParts=[];eParts.forEach(p=>{world.remove(p.sp);p.sp.material.dispose();});eParts=[];}
function showPresets(){E('pmod').classList.add('vis');}function hidePresets(){E('pmod').classList.remove('vis');}
function loadPreset(name){hidePresets();clearBrain();sCtr=0;const P={'sensory-motor':()=>{aS('V1','sensory_visual',{x:-22,y:-10,z:10},{label:'V1 Visual',nH:14});aS('A1','sensory_auditory',{x:-22,y:-10,z:-10},{label:'A1 Auditory',nH:14});aS('Assoc','association',{x:0,y:0,z:0},{label:'Association Cortex',nH:20,layerId:'L1'});aS('PFC','prefrontal',{x:18,y:6,z:5},{label:'Prefrontal dlPFC',nH:18,layerId:'L2'});aS('M1','motor',{x:12,y:14,z:-3},{label:'M1 Motor',nH:12,layerId:'L2'});aL('V1','Assoc','feedforward');aL('A1','Assoc','feedforward');aL('Assoc','PFC','feedforward');aL('Assoc','M1','feedforward');aL('PFC','M1','feedforward');aL('PFC','Assoc','feedback');aL('M1','Assoc','feedback');},'prefrontal':()=>{aS('V1','sensory_visual',{x:-26,y:-12,z:12},{label:'V1 Visual',nH:10});aS('A1','sensory_auditory',{x:-26,y:-12,z:-12},{label:'A1 Auditory',nH:10});aS('SOM','sensory_somatosensory',{x:-24,y:-6,z:0},{label:'Somatosensory',nH:10});aS('Assoc','association',{x:-4,y:-2,z:0},{label:'Assoc Cortex',nH:18,layerId:'L1'});aS('dlPFC','prefrontal',{x:18,y:6,z:6},{label:'dlPFC',nH:20,layerId:'L2'});aS('M1','motor',{x:14,y:14,z:-4},{label:'M1 Motor',nH:12,layerId:'L2'});aL('V1','Assoc','feedforward');aL('A1','Assoc','feedforward');aL('SOM','Assoc','feedforward');aL('Assoc','dlPFC','feedforward');aL('dlPFC','M1','feedforward');aL('dlPFC','Assoc','feedback');aL('dlPFC','V1','feedback');aL('dlPFC','A1','feedback');aL('M1','Assoc','feedback');aL('Assoc','M1','lateral');},'triangle':()=>{aS('A','association',{x:-14,y:8,z:0},{label:'Sphere A',nH:15});aS('B','executive',{x:14,y:8,z:0},{label:'Sphere B',nH:15});aS('C','motor',{x:0,y:-10,z:0},{label:'Sphere C',nH:15});aL('A','B','feedforward');aL('B','C','feedforward');aL('C','A','feedforward');aL('A','C','lateral');aL('B','A','lateral');},'star':()=>{aS('GW','executive',{x:0,y:0,z:0},{label:'Global Workspace',nH:22,layerId:'L3'});aS('V','sensory_visual',{x:-20,y:0,z:12},{label:'Visual',nH:12});aS('A','sensory_auditory',{x:-20,y:0,z:-12},{label:'Auditory',nH:12});aS('S','sensory_somatosensory',{x:0,y:-16,z:0},{label:'Somatosensory',nH:12});aS('M','motor',{x:20,y:8,z:0},{label:'Motor',nH:12,layerId:'L2'});for(const s of['V','A','S','M']){aL(s,'GW','feedforward');aL('GW',s,'feedback');}},'minimal':()=>{aS('A','association',{x:-10,y:0,z:0},{label:'Sphere A',nH:12});aS('B','motor',{x:10,y:0,z:0},{label:'Sphere B',nH:12});aL('A','B','feedforward');aL('B','A','feedback');},'drosophila':()=>{
/* โ•โ•โ• Drosophila melanogaster Adult Brain Connectome โ•โ•โ•
 Hemibrain dataset: 139,255 neurons, ~480M synapses
 10 brain regions with anatomically-derived proportions
 Region connection probabilities from published connectomics data
 Small-world: clustering=0.28, avg_path=3.5, modularity=0.42 */
const TOTAL=139255;
const REG={
 OL:{pct:.35,label:'Optic Lobes',type:'sensory_visual',pos:{x:-30,y:-4,z:0},layer:'L0',emoji:'๐Ÿ‘'},
 CX:{pct:.05,label:'Central Complex',type:'executive',pos:{x:0,y:4,z:0},layer:'L2',emoji:'๐Ÿง '},
 MB:{pct:.10,label:'Mushroom Bodies',type:'prefrontal',pos:{x:-10,y:10,z:10},layer:'L2',emoji:'๐Ÿ„'},
 INP:{pct:.08,label:'Inferior Neuropils',type:'association',pos:{x:4,y:-8,z:-6},layer:'L1',emoji:'๐Ÿ”„'},
 FB:{pct:.04,label:'Fan-shaped Body',type:'motor',pos:{x:0,y:12,z:-2},layer:'L2',emoji:'๐Ÿชญ'},
 VB:{pct:.06,label:'Ventral Nerve Cord',type:'motor',pos:{x:0,y:-20,z:-12},layer:'L0',emoji:'โšก'},
 SIP:{pct:.05,label:'Sup. Int. Protocerebrum',type:'prefrontal',pos:{x:-14,y:14,z:4},layer:'L3',emoji:'๐Ÿงฉ'},
 SLP:{pct:.05,label:'Sup. Lat. Protocerebrum',type:'prefrontal',pos:{x:14,y:14,z:-4},layer:'L3',emoji:'๐Ÿงฉ'},
 CRE:{pct:.06,label:'Crepine',type:'association',pos:{x:-6,y:-2,z:-10},layer:'L1',emoji:'๐ŸŒ'},
 LH:{pct:.06,label:'Lateral Horn',type:'sensory_somatosensory',pos:{x:20,y:4,z:10},layer:'L1',emoji:'๐Ÿ”ฎ'}
};
/* Neuron counts per region & scaled hidden-neuron counts for rendering */
for(const[k,r]of Object.entries(REG)){
 const nReal=Math.round(TOTAL*r.pct);
 const nH=Math.max(8,Math.round(r.pct*160));/* proportional visual fidelity */
 const nI=Math.min(6,Math.max(2,Math.round(nH*.2)));
 const nO=Math.min(6,Math.max(2,Math.round(nH*.18)));
 aS(k,r.type,r.pos,{label:r.label,nH,nI,nO,layerId:r.layer});
 /* Tag sphere with real neuron count for HUD */
 if(B.spheres[k]){B.spheres[k]._realNeurons=nReal;B.spheres[k]._customEmoji=r.emoji;}
}
/* โ•โ•โ• Region-to-region connectivity (from wiring.py connection probability matrix) โ•โ•โ• */
/* Major anatomical pathways (feedforward) */
aL('OL','CX','feedforward'); /* Visual โ†’ Central Complex */
aL('OL','LH','feedforward'); /* Visual โ†’ Lateral Horn */
aL('CX','FB','feedforward'); /* Central Complex โ†’ Fan-shaped Body */
aL('MB','INP','feedforward'); /* Mushroom Bodies โ†’ Inferior Neuropils */
aL('INP','VB','feedforward'); /* Inferior Neuropils โ†’ Ventral Nerve Cord */
/* Secondary feedforward pathways */
aL('CX','INP','feedforward'); /* Central Complex โ†’ Inferior Neuropils */
aL('FB','VB','feedforward'); /* Fan-shaped Body โ†’ Ventral Nerve Cord */
aL('OL','SLP','feedforward'); /* Optic Lobes โ†’ Superior Lateral Protocerebrum */
aL('SIP','SLP','lateral'); /* Superior Intermediate โ†” Superior Lateral */
aL('SLP','LH','feedforward'); /* Superior Lateral โ†’ Lateral Horn */
/* Feedback pathways */
aL('CX','MB','feedback'); /* Central Complex โ†’ Mushroom Bodies */
aL('INP','CX','feedback'); /* Inferior Neuropils โ†’ Central Complex */
aL('FB','CX','feedback'); /* Fan-shaped Body โ†’ Central Complex */
aL('LH','MB','feedback'); /* Lateral Horn โ†’ Mushroom Bodies */
aL('VB','CRE','feedback'); /* Ventral Nerve Cord โ†’ Crepine */
/* Lateral / modulatory connections */
aL('MB','CX','lateral'); /* Mushroom Bodies โ†” Central Complex */
aL('CRE','LH','lateral'); /* Crepine โ†” Lateral Horn */
aL('SIP','MB','lateral'); /* Sup. Int. Protocerebrum โ†” Mushroom Bodies */
aL('CRE','VB','lateral'); /* Crepine โ†” Ventral Nerve Cord */
/* Post-load: update emoji icons for all Drosophila spheres */
for(const[k,r]of Object.entries(REG)){if(VM[k])updSphEmoji(k,r.emoji);}
}};if(P[name])P[name]();updSL();updLL();updHUD();resetCam();const PN={'sensory-motor':'Sensory-Motor','prefrontal':'Prefrontal Executive','triangle':'Triangle Loop','star':'Star / GW','minimal':'Minimal Pair','drosophila':'๐Ÿชฐ Drosophila melanogaster ยท 139,255 neurons'};toast('Loaded: '+(PN[name]||name),'ok');}
function aS(id,type,pos,p){const s=mkSphere(id,type,pos,p);B.spheres[id]=s;buildSV(s);sCtr++;}function aL(si,ti,type){const l=mkLink(si,ti,type);if(l){B.links[l.id]=l;buildLV(l);}}
function dl(t,fn){const b=new Blob([t],{type:'application/json'}),a=document.createElement('a');a.href=URL.createObjectURL(b);a.download=fn;document.body.appendChild(a);a.click();document.body.removeChild(a);URL.revokeObjectURL(a.href);}
function toast(m,t){const e=E('toast');e.textContent=m;e.className='toast '+(t==='ok'?'tok':'ter')+' sh';setTimeout(()=>e.classList.remove('sh'),2200);}
function stab(n,btn){document.querySelectorAll('.tc').forEach(t=>t.classList.remove('on'));document.querySelectorAll('.tab').forEach(b=>b.classList.remove('on'));E('t-'+n).classList.add('on');if(btn)btn.classList.add('on');}
function togPanel(){if(isMobile){togMobilePanel();return;}E('panel').classList.toggle('collapsed');document.querySelector('.ptog .ar').textContent=E('panel').classList.contains('collapsed')?'โ–ธ':'โ—‚';}
let mPanelOpen=false;
function togMobilePanel(){mPanelOpen=!mPanelOpen;E('panel').classList.toggle('m-open',mPanelOpen);}
function resetCam(){cam.position.set(0,25,90);orb.target.set(0,0,0);orb.update();}function togRotate(){orb.autoRotate=!orb.autoRotate;E('rot-btn').classList.toggle('on',orb.autoRotate);}
// โ•โ•โ• MOBILE DETECTION & SETUP โ•โ•โ•
let isMobile=false;
function detectMobile(){return /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent)||(window.innerWidth<=768&&'ontouchstart' in window);}
function setupMobile(){
 isMobile=true;document.body.classList.add('mobile');
 // Panel starts collapsed as bottom sheet
 E('panel').classList.remove('collapsed');
 // Touch events for drag on mobile
 const cv=E('c3d');
 cv.addEventListener('touchstart',e=>{if(e.touches.length===1){const t=e.touches[0];onDown({button:0,clientX:t.clientX,clientY:t.clientY,shiftKey:false,preventDefault:()=>{}});}},{passive:true});
 cv.addEventListener('touchmove',e=>{if(e.touches.length===1&&dragging){e.preventDefault();const t=e.touches[0];onMove({clientX:t.clientX,clientY:t.clientY});}},{passive:false});
 cv.addEventListener('touchend',e=>{if(dragging)onUp({});},{passive:true});
 // Swipe panel
 let touchStartY=0;
 E('panel').addEventListener('touchstart',e=>{touchStartY=e.touches[0].clientY;},{passive:true});
 E('panel').addEventListener('touchmove',e=>{const dy=e.touches[0].clientY-touchStartY;if(!mPanelOpen&&dy<-30){togMobilePanel();touchStartY=9999;}if(mPanelOpen&&dy>40){togMobilePanel();touchStartY=9999;}},{passive:true});
 // Tap on sphere for mobile select
 let tapTimer=null,tapTarget=null;
 cv.addEventListener('touchstart',e=>{if(e.touches.length===1){tapTimer=Date.now();const t=e.touches[0];getMouseXY({clientX:t.clientX,clientY:t.clientY});ray.setFromCamera(mouse,cam);tapTarget=hitSphere();}},{passive:true});
 cv.addEventListener('touchend',e=>{const dt=Date.now()-(tapTimer||0);if(dt<300&&tapTarget&&!didDrag){
 if(linkMode){if(!linkSrc){linkSrc=tapTarget.id;toast(`Source: ${B.spheres[tapTarget.id].label}. Tap target.`,'ok');}
 else if(tapTarget.id!==linkSrc){const l=mkLink(linkSrc,tapTarget.id,'feedforward');if(l){B.links[l.id]=l;buildLV(l);updLL();toast('Link created!','ok');}linkMode=false;linkSrc=null;if(E('m-lnk'))E('m-lnk').classList.remove('on');E('lnk-tool').classList.remove('on');}return;}
 selSph(tapTarget.id);togMobilePanel();mPanelOpen=true;E('panel').classList.add('m-open');}tapTarget=null;},{passive:true});
 // Mobile layout mode button sync
 const origTogLayout=togLayout;
 // Adjust camera for portrait
 cam.position.set(0,20,70);cam.fov=60;cam.updateProjectionMatrix();
}
window.addEventListener('resize',()=>{if(cam&&rnd){const c=E('c3d'),r=c.getBoundingClientRect();cam.aspect=r.width/r.height;cam.updateProjectionMatrix();rnd.setSize(r.width,r.height,false);}});
initThree();if(detectMobile())setupMobile();updHUD();updSL();updLL();setTimeout(()=>loadPreset('sensory-motor'),300);
</script></body></html>