import * as THREE from 'three';
import { EffectComposer } from 'three/addons/postprocessing/EffectComposer.js';
import { RenderPass } from 'three/addons/postprocessing/RenderPass.js';
import { UnrealBloomPass } from 'three/addons/postprocessing/UnrealBloomPass.js';
import { SMAAPass } from 'three/addons/postprocessing/SMAAPass.js';
import { ArchonAssembler } from './archon_assembler.js';

// ═══════════════════════════════════════════
// NEXUS v2.0 — WebSocket Bridge to Timmy
// ═══════════════════════════════════════════

const NEXUS = {
  colors: {
    primary:    0x4af0c0,
    secondary:  0x7b5cff,
    bg:         0x050510,
    panelBg:    0x0a0f28,
    nebula1:    0x1a0a3e,
    nebula2:    0x0a1a3e,
    gold:       0xffd700,
    danger:     0xff4466,
    gridLine:   0x1a2a4a,
  }
};

// ═══ STATE ═══
let camera, scene, renderer, composer;
let clock, playerPos, playerRot;
let keys = {};
let mouseDown = false;
let batcaveTerminals = [];
let portals = [];
let visionPoints = [];
let agents = [];
let activePortal = null;
let activeVisionPoint = null;
let portalOverlayActive = false;
let visionOverlayActive = false;
let thoughtStreamMesh;
let harnessPulseMesh;
let powerMeterBars = [];
let particles, dustParticles;
let dualBrainGroup, dualBrainPanelTexture, dualBrainPanelCanvas;
let cloudOrb, localOrb, dualBrainLight;
let debugOverlay;
let voidLight = null;
let frameCount = 0, lastFPSTime = 0, fps = 0;
let chatOpen = true;
let loadProgress = 0;
let performanceTier = 'high';
let archonAssembler;

// ═══ COMMIT HEATMAP ═══
let heatmapMesh = null, heatmapMat = null, heatmapTexture = null;
const _heatmapCanvas = document.createElement('canvas');
_heatmapCanvas.width = 512;
_heatmapCanvas.height = 512;
const HEATMAP_ZONES = [
  { name: 'Claude',     color: [255, 100,  60], authorMatch: /^claude$/i,   angleDeg:   0 },
  { name: 'Timmy',      color: [ 60, 160, 255], authorMatch: /^timmy/i,      angleDeg:  90 },
  { name: 'Kimi',       color: [ 60, 255, 140], authorMatch: /^kimi/i,       angleDeg: 180 },
  { name: 'Perplexity', color: [200,  60, 255], authorMatch: /^perplexity/i, angleDeg: 270 },
];
const _heatZoneIntensity = Object.fromEntries(HEATMAP_ZONES.map(z => [z.name, 0]));

// ═══ NAVIGATION ═══
const NAV_MODES = ['walk', 'orbit', 'fly'];
let navModeIdx = 0;
const orbitState = {
  target: new THREE.Vector3(0, 2, 0), radius: 14,
  theta: Math.PI, phi: Math.PI / 6,
  minR: 3, maxR: 40, lastX: 0, lastY: 0,
};
let flyY = 2;

// ═══ WEBSOCKET BRIDGE ═══
const WS_URL = new URLSearchParams(location.search).get('ws') || 'ws://localhost:8765';
let ws = null;
let wsConnected = false;
let wsReconnectTimer = null;

function initWebSocket() {
  if (ws) { try { ws.close(); } catch (_) {} }
  try {
    ws = new WebSocket(WS_URL);
    ws.onopen = () => {
      wsConnected = true;
      addChatMessage('system', `Connected to Timmy @ ${WS_URL}`);
      wsSend({ type: 'presence', event: 'join' });
      if (wsReconnectTimer) { clearInterval(wsReconnectTimer); wsReconnectTimer = null; }
    };
    ws.onmessage = (e) => {
      try { onWsMessage(JSON.parse(e.data)); } catch (_) {}
    };
    ws.onclose = () => {
      wsConnected = false;
      addChatMessage('system', 'Connection to Timmy lost. Reconnecting...');
      scheduleReconnect();
    };
    ws.onerror = () => {
      wsConnected = false;
      scheduleReconnect();
    };
  } catch (_) {
    wsConnected = false;
    scheduleReconnect();
  }
}

function scheduleReconnect() {
  if (wsReconnectTimer) return;
  wsReconnectTimer = setInterval(() => {
    if (!wsConnected) initWebSocket();
  }, 5000);
}

function wsSend(msg) {
  if (ws && ws.readyState === WebSocket.OPEN) ws.send(JSON.stringify(msg));
}

function onWsMessage(data) {
  switch (data.type) {
    case 'agent_state': {
      const agent = agents.find(a => a.id === data.agent);
      if (!agent) break;
      if (data.state === 'thinking') {
        setAgentActivity(agent, ACTIVITY_STATES.THINKING);
        agent.activityLocked = true;
      } else if (data.state === 'processing') {
        setAgentActivity(agent, ACTIVITY_STATES.PROCESSING);
        agent.activityLocked = true;
      } else if (data.state === 'waiting') {
        setAgentActivity(agent, ACTIVITY_STATES.WAITING);
        agent.activityLocked = true;
      } else {
        setAgentActivity(agent, ACTIVITY_STATES.NONE);
        agent.activityLocked = false;
      }
      if (data.thought) addAgentLog(data.agent, data.thought);
      break;
    }
    case 'agent_move': {
      const agent = agents.find(a => a.id === data.agent);
      if (agent) agent.targetPos.set(data.x, 0, data.z);
      break;
    }
    case 'chat_response':
      addChatMessage(data.agent || 'timmy', data.text);
      // Clear Timmy's thinking state
      const timmy = agents.find(a => a.id === 'timmy');
      if (timmy) { setAgentActivity(timmy, ACTIVITY_STATES.NONE); timmy.activityLocked = false; }
      break;
    case 'system_metrics':
      updateTerminalMetrics(data);
      break;
    case 'dual_brain':
      updateDualBrainFromWS(data);
      break;
    case 'heartbeat':
      break;
  }
}

// ═══ INIT ═══
async function init() {
  clock = new THREE.Clock();
  playerPos = new THREE.Vector3(0, 2, 12);
  playerRot = new THREE.Euler(0, 0, 0, 'YXZ');

  const canvas = document.getElementById('nexus-canvas');
  renderer = new THREE.WebGLRenderer({ canvas, antialias: true });
  renderer.setSize(window.innerWidth, window.innerHeight);
  renderer.toneMapping = THREE.ACESFilmicToneMapping;
  renderer.toneMappingExposure = 1.2;
  renderer.shadowMap.enabled = true;
  renderer.shadowMap.type = THREE.PCFSoftShadowMap;

  performanceTier = detectPerformanceTier();
  updateLoad(10);

  scene = new THREE.Scene();
  scene.fog = new THREE.FogExp2(0x050510, 0.012);
  camera = new THREE.PerspectiveCamera(65, window.innerWidth / window.innerHeight, 0.1, 1000);
  camera.position.copy(playerPos);
  updateLoad(20);

  createSkybox();      updateLoad(30);
  createLighting();    updateLoad(40);
  createFloor();
  createCommitHeatmap(); updateLoad(50);
  createBatcaveTerminal(); updateLoad(60);

  try {
    const portalData = await (await fetch('./portals.json')).json();
    createPortals(portalData);
  } catch (e) { addChatMessage('error', 'Portal registry offline.'); }

  try {
    const visionData = await (await fetch('./vision.json')).json();
    createVisionPoints(visionData);
  } catch (_) {}

  updateLoad(80);
  createParticles();
  createDustParticles();
  updateLoad(85);
  createAmbientStructures();
  createAgentPresences();
  createThoughtStream();
  createHarnessPulse();
  createSessionPowerMeter();
  createDualBrainPanel();
  updateLoad(90);

  // Test Archon Assembler
  const testManifest = {
    head: true,
    torso: true,
    arms: true,
    legs: true,
    hands: true,
    eyes: true,
    mouth: true,
    wings: true,
    aura: true,
    crown: true,
  };
  archonAssembler = new ArchonAssembler(scene, testManifest);
  archonAssembler.assemble();
  archonAssembler.spawn(new THREE.Vector3(0, 0, -15));

  composer = new EffectComposer(renderer);
  composer.addPass(new RenderPass(scene, camera));
  composer.addPass(new UnrealBloomPass(new THREE.Vector2(window.innerWidth, window.innerHeight), 0.6, 0.4, 0.85));
  composer.addPass(new SMAAPass(window.innerWidth, window.innerHeight));
  updateLoad(95);

  setupControls();
  window.addEventListener('resize', onResize);
  debugOverlay = document.getElementById('debug-overlay');
  updateLoad(100);

  setTimeout(() => {
    document.getElementById('loading-screen').classList.add('fade-out');
    const enterPrompt = document.getElementById('enter-prompt');
    enterPrompt.style.display = 'flex';
    enterPrompt.addEventListener('click', () => {
      enterPrompt.classList.add('fade-out');
      document.getElementById('hud').style.display = 'block';
      setTimeout(() => enterPrompt.remove(), 600);
    }, { once: true });
    setTimeout(() => document.getElementById('loading-screen').remove(), 900);
  }, 600);

  initWebSocket();
  requestAnimationFrame(gameLoop);
}

function updateLoad(pct) {
  loadProgress = pct;
  const fill = document.getElementById('load-progress');
  if (fill) fill.style.width = pct + '%';
}

// ═══ PERFORMANCE ═══
function detectPerformanceTier() {
  const isMobile = /Mobi|Android|iPhone|iPad/i.test(navigator.userAgent) || window.innerWidth < 768;
  const cores = navigator.hardwareConcurrency || 4;
  if (isMobile) { renderer.setPixelRatio(1); renderer.shadowMap.enabled = false; return 'low'; }
  if (cores < 8) { renderer.setPixelRatio(Math.min(window.devicePixelRatio, 1.5)); renderer.shadowMap.type = THREE.BasicShadowMap; return 'medium'; }
  renderer.setPixelRatio(Math.min(window.devicePixelRatio, 2));
  return 'high';
}

function particleCount(base) {
  return Math.floor(base * (performanceTier === 'low' ? 0.25 : performanceTier === 'medium' ? 0.6 : 1));
}

// ═══ SKYBOX ═══
function createSkybox() {
  const skyGeo = new THREE.SphereGeometry(400, 64, 64);
  const skyMat = new THREE.ShaderMaterial({
    uniforms: {
      uTime: { value: 0 },
      uColor1: { value: new THREE.Color(0x0a0520) },
      uColor2: { value: new THREE.Color(0x1a0a3e) },
      uColor3: { value: new THREE.Color(0x0a1a3e) },
      uStarDensity: { value: 0.97 },
    },
    vertexShader: `
      varying vec3 vPos;
      void main() { vPos = position; gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0); }
    `,
    fragmentShader: `
      uniform float uTime; uniform vec3 uColor1, uColor2, uColor3; uniform float uStarDensity;
      varying vec3 vPos;
      float hash(vec3 p) { p = fract(p * vec3(443.897,441.423,437.195)); p += dot(p,p.yzx+19.19); return fract((p.x+p.y)*p.z); }
      float noise(vec3 p) {
        vec3 i = floor(p), f = fract(p); f = f*f*(3.0-2.0*f);
        return mix(mix(mix(hash(i),hash(i+vec3(1,0,0)),f.x),mix(hash(i+vec3(0,1,0)),hash(i+vec3(1,1,0)),f.x),f.y),
                   mix(mix(hash(i+vec3(0,0,1)),hash(i+vec3(1,0,1)),f.x),mix(hash(i+vec3(0,1,1)),hash(i+vec3(1,1,1)),f.x),f.y),f.z);
      }
      float fbm(vec3 p) { float v=0.0,a=0.5; for(int i=0;i<5;i++){v+=a*noise(p);p*=2.0;a*=0.5;} return v; }
      void main() {
        vec3 dir = normalize(vPos);
        float n1=fbm(dir*3.0+uTime*0.02), n2=fbm(dir*5.0-uTime*0.015+100.0), n3=fbm(dir*2.0+uTime*0.01+200.0);
        vec3 col = mix(mix(uColor1,uColor2,smoothstep(0.3,0.7,n1)),uColor3,smoothstep(0.4,0.8,n2)*0.5);
        col += vec3(0.15,0.05,0.25)*pow(n1*n2,2.0)*1.5 + vec3(0.05,0.15,0.25)*pow(n3,3.0);
        float sf=hash(dir*800.0), stars=step(uStarDensity,sf)*(0.5+0.5*hash(dir*1600.0));
        float tw=0.7+0.3*sin(uTime*2.0+hash(dir*400.0)*6.28);
        col += vec3(stars*tw) + vec3(0.8,0.9,1.0)*step(0.998,sf)*tw;
        gl_FragColor = vec4(col, 1.0);
      }
    `,
    side: THREE.BackSide,
  });
  const sky = new THREE.Mesh(skyGeo, skyMat);
  sky.name = 'skybox';
  scene.add(sky);
}

// ═══ LIGHTING ═══
function createLighting() {
  scene.add(new THREE.AmbientLight(0x1a1a3a, 0.4));
  const dirLight = new THREE.DirectionalLight(0x4466aa, 0.6);
  dirLight.position.set(10, 20, 10);
  dirLight.castShadow = renderer.shadowMap.enabled;
  dirLight.shadow.mapSize.set(performanceTier === 'high' ? 2048 : performanceTier === 'medium' ? 1024 : 512,
                              performanceTier === 'high' ? 2048 : performanceTier === 'medium' ? 1024 : 512);
  scene.add(dirLight);
  const tl = new THREE.PointLight(NEXUS.colors.primary, 2, 30, 1.5); tl.position.set(0, 1, -5); scene.add(tl);
  const pl = new THREE.PointLight(NEXUS.colors.secondary, 1.5, 25, 1.5); pl.position.set(-8, 3, -8); scene.add(pl);
}

// ═══ FLOOR ═══
function createFloor() {
  const platGeo = new THREE.CylinderGeometry(25, 25, 0.3, 6);
  const platMat = new THREE.MeshPhysicalMaterial({ color: NEXUS.colors.bg, transparent: true, opacity: 0.2, transmission: 0.9, roughness: 0.1, metalness: 0.2 });
  const platform = new THREE.Mesh(platGeo, platMat);
  platform.position.y = -0.15; platform.receiveShadow = true;
  scene.add(platform);

  const gridHelper = new THREE.GridHelper(50, 50, NEXUS.colors.gridLine, NEXUS.colors.gridLine);
  gridHelper.material.opacity = 0.15; gridHelper.material.transparent = true; gridHelper.position.y = 0.02;
  scene.add(gridHelper);

  const ringGeo = new THREE.RingGeometry(24.5, 25.2, 6);
  const ringMat = new THREE.MeshBasicMaterial({ color: NEXUS.colors.primary, transparent: true, opacity: 0.4, side: THREE.DoubleSide });
  const ring = new THREE.Mesh(ringGeo, ringMat);
  ring.rotation.x = Math.PI / 2; ring.position.y = 0.05;
  scene.add(ring);

  _buildGlassFloor();
}

function _buildGlassFloor() {
  const TILE = 0.85, GAP = 0.14, STEP = TILE + GAP, RADIUS = 4.55;
  const group = new THREE.Group();

  // Frame ring
  const frameMat = new THREE.MeshStandardMaterial({ color: 0x0a1828, metalness: 0.9, roughness: 0.1, emissive: new THREE.Color(NEXUS.colors.primary).multiplyScalar(0.06) });
  const rim = new THREE.Mesh(new THREE.RingGeometry(4.7, 5.3, 64), frameMat);
  rim.rotation.x = -Math.PI / 2; rim.position.y = 0.01; group.add(rim);
  const torus = new THREE.Mesh(new THREE.TorusGeometry(5.0, 0.1, 6, 64), frameMat);
  torus.rotation.x = Math.PI / 2; torus.position.y = 0.01; group.add(torus);

  // Collect tile positions
  const slots = [];
  for (let r = -5; r <= 5; r++) for (let c = -5; c <= 5; c++) {
    const x = c * STEP, z = r * STEP;
    if (Math.sqrt(x * x + z * z) <= RADIUS) slots.push({ x, z });
  }

  // Instanced glass tiles
  const tileMat = new THREE.MeshPhysicalMaterial({
    color: new THREE.Color(NEXUS.colors.primary), transparent: true, opacity: 0.09,
    roughness: 0, metalness: 0, transmission: 0.92, thickness: 0.06, side: THREE.DoubleSide, depthWrite: false,
  });
  const tileMesh = new THREE.InstancedMesh(new THREE.PlaneGeometry(TILE, TILE), tileMat, slots.length);
  tileMesh.instanceMatrix.setUsage(THREE.StaticDrawUsage);
  const dummy = new THREE.Object3D();
  dummy.rotation.x = -Math.PI / 2;
  slots.forEach((s, i) => { dummy.position.set(s.x, 0.005, s.z); dummy.updateMatrix(); tileMesh.setMatrixAt(i, dummy.matrix); });
  tileMesh.instanceMatrix.needsUpdate = true;
  group.add(tileMesh);

  // Edge lines (single draw call)
  const HS = TILE / 2;
  const verts = new Float32Array(slots.length * 24);
  let vi = 0;
  for (const { x, z } of slots) {
    const y = 0.008;
    verts[vi++]=x-HS;verts[vi++]=y;verts[vi++]=z-HS; verts[vi++]=x+HS;verts[vi++]=y;verts[vi++]=z-HS;
    verts[vi++]=x+HS;verts[vi++]=y;verts[vi++]=z-HS; verts[vi++]=x+HS;verts[vi++]=y;verts[vi++]=z+HS;
    verts[vi++]=x+HS;verts[vi++]=y;verts[vi++]=z+HS; verts[vi++]=x-HS;verts[vi++]=y;verts[vi++]=z+HS;
    verts[vi++]=x-HS;verts[vi++]=y;verts[vi++]=z+HS; verts[vi++]=x-HS;verts[vi++]=y;verts[vi++]=z-HS;
  }
  const edgeGeo = new THREE.BufferGeometry();
  edgeGeo.setAttribute('position', new THREE.BufferAttribute(verts, 3));
  const edgeMat = new THREE.LineBasicMaterial({ color: NEXUS.colors.primary, transparent: true, opacity: 0.55 });
  group.add(new THREE.LineSegments(edgeGeo, edgeMat));

  // Void light
  voidLight = new THREE.PointLight(NEXUS.colors.primary, 0.5, 14);
  voidLight.position.set(0, -3.5, 0);
  group.add(voidLight);

  scene.add(group);
}

// ═══ COMMIT HEATMAP ═══
function createCommitHeatmap() {
  heatmapTexture = new THREE.CanvasTexture(_heatmapCanvas);
  heatmapMat = new THREE.MeshBasicMaterial({ map: heatmapTexture, transparent: true, opacity: 0.9, depthWrite: false, blending: THREE.AdditiveBlending, side: THREE.DoubleSide });
  heatmapMesh = new THREE.Mesh(new THREE.CircleGeometry(24, 64), heatmapMat);
  heatmapMesh.rotation.x = -Math.PI / 2; heatmapMesh.position.y = 0.005;
  scene.add(heatmapMesh);
  updateHeatmap();
  setInterval(updateHeatmap, 5 * 60 * 1000);
}

function drawHeatmap() {
  const ctx = _heatmapCanvas.getContext('2d'), cx = 256, cy = 256, r = 246;
  ctx.clearRect(0, 0, 512, 512);
  ctx.save(); ctx.beginPath(); ctx.arc(cx, cy, r, 0, Math.PI * 2); ctx.clip();
  for (const zone of HEATMAP_ZONES) {
    const intensity = _heatZoneIntensity[zone.name] || 0;
    if (intensity < 0.01) continue;
    const [rr, gg, bb] = zone.color;
    const baseRad = zone.angleDeg * (Math.PI / 180);
    const gx = cx + Math.cos(baseRad) * r * 0.55, gy = cy + Math.sin(baseRad) * r * 0.55;
    const grad = ctx.createRadialGradient(gx, gy, 0, gx, gy, r * 0.75);
    grad.addColorStop(0, `rgba(${rr},${gg},${bb},${0.65 * intensity})`);
    grad.addColorStop(0.45, `rgba(${rr},${gg},${bb},${0.25 * intensity})`);
    grad.addColorStop(1, `rgba(${rr},${gg},${bb},0)`);
    ctx.beginPath(); ctx.moveTo(cx, cy); ctx.arc(cx, cy, r, baseRad - Math.PI / 4, baseRad + Math.PI / 4); ctx.closePath();
    ctx.fillStyle = grad; ctx.fill();
    if (intensity > 0.05) {
      ctx.font = `bold ${Math.round(13 * intensity + 7)}px "Courier New",monospace`;
      ctx.fillStyle = `rgba(${rr},${gg},${bb},${Math.min(intensity * 1.2, 0.9)})`;
      ctx.textAlign = 'center'; ctx.textBaseline = 'middle';
      ctx.fillText(zone.name, cx + Math.cos(baseRad) * r * 0.62, cy + Math.sin(baseRad) * r * 0.62);
    }
  }
  ctx.restore();
  if (heatmapTexture) heatmapTexture.needsUpdate = true;
}

async function updateHeatmap() {
  let commits = [];
  try { const res = await fetch('/api/commits'); if (res.ok) commits = await res.json(); } catch {}
  const DECAY_MS = 24 * 60 * 60 * 1000, now = Date.now();
  const raw = Object.fromEntries(HEATMAP_ZONES.map(z => [z.name, 0]));
  for (const c of commits) {
    const author = c.commit?.author?.name || c.author?.login || '';
    const age = now - new Date(c.commit?.author?.date || 0).getTime();
    if (age > DECAY_MS) continue;
    const weight = 1 - age / DECAY_MS;
    for (const z of HEATMAP_ZONES) { if (z.authorMatch.test(author)) { raw[z.name] += weight; break; } }
  }
  for (const z of HEATMAP_ZONES) _heatZoneIntensity[z.name] = Math.min(raw[z.name] / 8, 1.0);
  drawHeatmap();
}

// ═══ BATCAVE TERMINAL ═══
function createBatcaveTerminal() {
  const group = new THREE.Group();
  group.position.set(0, 0, -8);
  const panels = [
    { title: 'NEXUS COMMAND', color: NEXUS.colors.primary,   rot: -0.4, x: -6, y: 3, lines: ['> STATUS: NOMINAL', '> UPTIME: —', '> HARNESS: STABLE', '> MODE: SOVEREIGN'] },
    { title: 'DEV QUEUE',     color: NEXUS.colors.gold,      rot: -0.2, x: -3, y: 3, lines: ['> AWAITING WS...', '> CONNECT TIMMY', '> TO SEE LIVE', '> ISSUE DATA'] },
    { title: 'METRICS',       color: NEXUS.colors.secondary, rot: 0,    x: 0,  y: 3, lines: ['> CPU: —', '> MEM: —', '> COMMITS: —', '> AGENTS: —'] },
    { title: 'THOUGHTS',      color: NEXUS.colors.primary,   rot: 0.2,  x: 3,  y: 3, lines: ['> AWAITING', '> WEBSOCKET', '> CONNECTION', '> TO TIMMY'] },
    { title: 'AGENT STATUS',  color: NEXUS.colors.gold,      rot: 0.4,  x: 6,  y: 3, lines: ['> TIMMY: ○ OFFLINE', '> KIMI: ○ OFFLINE', '> CLAUDE: ○ OFFLINE', '> PERPLEXITY: ○'] },
  ];
  panels.forEach(d => createTerminalPanel(group, d.x, d.y, d.rot, d.title, d.color, d.lines));
  scene.add(group);
}

function createTerminalPanel(parent, x, y, rot, title, color, lines) {
  const w = 2.8, h = 3.5, group = new THREE.Group();
  group.position.set(x, y, 0); group.rotation.y = rot;

  const bg = new THREE.Mesh(new THREE.PlaneGeometry(w, h), new THREE.MeshPhysicalMaterial({ color: NEXUS.colors.panelBg, transparent: true, opacity: 0.6, roughness: 0.1, metalness: 0.5, side: THREE.DoubleSide }));
  group.add(bg);

  const border = new THREE.Mesh(new THREE.PlaneGeometry(w + 0.05, h + 0.05), new THREE.MeshBasicMaterial({ color, transparent: true, opacity: 0.3, side: THREE.DoubleSide }));
  border.position.z = -0.01; group.add(border);

  const tc = document.createElement('canvas'); tc.width = 512; tc.height = 640;
  const ctx = tc.getContext('2d');
  ctx.fillStyle = '#' + new THREE.Color(color).getHexString();
  ctx.font = 'bold 32px "Orbitron",sans-serif'; ctx.fillText(title, 20, 45);
  ctx.fillRect(20, 55, 472, 2);
  ctx.font = '20px "JetBrains Mono",monospace';
  lines.forEach((line, i) => {
    ctx.fillStyle = line.includes('●') ? '#4af0c0' : line.includes('○') ? '#5a6a8a' : '#a0b8d0';
    ctx.fillText(line, 20, 100 + i * 40);
  });
  const tex = new THREE.CanvasTexture(tc); tex.minFilter = THREE.LinearFilter;
  const textMesh = new THREE.Mesh(new THREE.PlaneGeometry(w * 0.95, h * 0.95), new THREE.MeshBasicMaterial({ map: tex, transparent: true, side: THREE.DoubleSide, depthWrite: false }));
  textMesh.position.z = 0.01; group.add(textMesh);

  const scanMat = new THREE.ShaderMaterial({
    transparent: true, depthWrite: false,
    uniforms: { uTime: { value: 0 }, uColor: { value: new THREE.Color(color) } },
    vertexShader: `varying vec2 vUv; void main(){vUv=uv;gl_Position=projectionMatrix*modelViewMatrix*vec4(position,1.0);}`,
    fragmentShader: `uniform float uTime;uniform vec3 uColor;varying vec2 vUv;void main(){float s=pow(sin(vUv.y*200.0+uTime*2.0)*0.5+0.5,8.0);float w=smoothstep(0.0,0.02,abs(fract(vUv.y-uTime*0.1)-0.5));float a=s*0.04+(1.0-w)*0.08;gl_FragColor=vec4(uColor,a);}`,
    side: THREE.DoubleSide,
  });
  const scan = new THREE.Mesh(new THREE.PlaneGeometry(w, h), scanMat);
  scan.position.z = 0.02; group.add(scan);

  parent.add(group);
  batcaveTerminals.push({ group, scanMat, borderMat: border.material });
}

function updateTerminalMetrics(data) {
  // WS-driven terminal update — could redraw canvases in the future
  // For now, metrics come through and are visible in the thought stream
}

// ═══ AGENT SYSTEM ═══
const AGENT_STATES = { IDLE: 'IDLE', PACING: 'PACING', LOOKING: 'LOOKING', READING: 'READING' };
const ACTIVITY_STATES = { NONE: 'NONE', WAITING: 'WAITING', THINKING: 'THINKING', PROCESSING: 'PROCESSING' };

function createActivityIndicator(color) {
  const group = new THREE.Group(); group.position.y = 4.2; group.visible = false;
  const waitMesh = new THREE.Mesh(new THREE.SphereGeometry(0.18, 16, 16), new THREE.MeshBasicMaterial({ color, transparent: true, opacity: 0.85 }));
  waitMesh.name = 'indicator_waiting'; waitMesh.visible = false; group.add(waitMesh);
  const thinkMesh = new THREE.Mesh(new THREE.OctahedronGeometry(0.2, 0), new THREE.MeshBasicMaterial({ color, wireframe: true }));
  thinkMesh.name = 'indicator_thinking'; thinkMesh.visible = false; group.add(thinkMesh);
  const procMesh = new THREE.Mesh(new THREE.TorusGeometry(0.18, 0.04, 8, 32), new THREE.MeshBasicMaterial({ color }));
  procMesh.name = 'indicator_processing'; procMesh.visible = false; group.add(procMesh);
  return { group, waitMesh, thinkMesh, procMesh };
}

function setAgentActivity(agent, state) {
  agent.activityState = state;
  agent.indicator.group.visible = (state !== ACTIVITY_STATES.NONE);
  agent.indicator.waitMesh.visible  = (state === ACTIVITY_STATES.WAITING);
  agent.indicator.thinkMesh.visible = (state === ACTIVITY_STATES.THINKING);
  agent.indicator.procMesh.visible  = (state === ACTIVITY_STATES.PROCESSING);
}

function buildPacingPath(station) {
  const r = 1.8;
  return [
    new THREE.Vector3(station.x - r, 0, station.z),
    new THREE.Vector3(station.x, 0, station.z + r),
    new THREE.Vector3(station.x + r, 0, station.z - r * 0.5),
  ];
}

function pickNextState() {
  const w = { IDLE: 40, PACING: 25, LOOKING: 20, READING: 15 };
  let r = Math.random() * 100;
  for (const [s, wt] of Object.entries(w)) { r -= wt; if (r <= 0) return s; }
  return 'IDLE';
}

function createAgentPresences() {
  const agentData = [
    { id: 'timmy',      name: 'TIMMY',      color: NEXUS.colors.primary,   pos: { x: -4, z: -4 } },
    { id: 'kimi',       name: 'KIMI',       color: NEXUS.colors.secondary, pos: { x: 4,  z: -4 } },
    { id: 'claude',     name: 'CLAUDE',     color: NEXUS.colors.gold,      pos: { x: 0,  z: -6 } },
    { id: 'perplexity', name: 'PERPLEXITY', color: 0x4488ff,               pos: { x: -6, z: -2 } },
  ];
  agentData.forEach(data => {
    const group = new THREE.Group();
    group.position.set(data.pos.x, 0, data.pos.z);
    const color = new THREE.Color(data.color);

    const orb = new THREE.Mesh(new THREE.SphereGeometry(0.4, 32, 32), new THREE.MeshPhysicalMaterial({
      color, emissive: color, emissiveIntensity: 2, roughness: 0, metalness: 1, transmission: 0.8, thickness: 0.5,
    }));
    orb.position.y = 3; group.add(orb);

    const halo = new THREE.Mesh(new THREE.TorusGeometry(0.6, 0.02, 16, 64), new THREE.MeshBasicMaterial({ color, transparent: true, opacity: 0.4 }));
    halo.position.y = 3; halo.rotation.x = Math.PI / 2; group.add(halo);

    const lc = document.createElement('canvas'); lc.width = 256; lc.height = 64;
    const lctx = lc.getContext('2d');
    lctx.font = 'bold 24px "Orbitron",sans-serif'; lctx.fillStyle = '#' + color.getHexString();
    lctx.textAlign = 'center'; lctx.fillText(data.name, 128, 40);
    const label = new THREE.Mesh(new THREE.PlaneGeometry(2, 0.5), new THREE.MeshBasicMaterial({ map: new THREE.CanvasTexture(lc), transparent: true, side: THREE.DoubleSide }));
    label.position.y = 3.8; group.add(label);

    const indicator = createActivityIndicator(color);
    group.add(indicator.group);
    scene.add(group);

    agents.push({
      id: data.id, group, orb, halo, color,
      station: data.pos,
      targetPos: new THREE.Vector3(data.pos.x, 0, data.pos.z),
      state: AGENT_STATES.IDLE, stateTimer: 2 + Math.random() * 4,
      lookAngle: 0, lookSpeed: 0.4 + Math.random() * 0.3,
      pacingPath: buildPacingPath(data.pos), pacingIdx: 0,
      indicator, activityState: ACTIVITY_STATES.NONE, activityLocked: false,
    });
  });
}

// ═══ THOUGHT STREAM ═══
function createThoughtStream() {
  const mat = new THREE.ShaderMaterial({
    transparent: true, side: THREE.BackSide, depthWrite: false,
    uniforms: { uTime: { value: 0 }, uColor: { value: new THREE.Color(NEXUS.colors.primary) } },
    vertexShader: `varying vec2 vUv; void main(){vUv=uv;gl_Position=projectionMatrix*modelViewMatrix*vec4(position,1.0);}`,
    fragmentShader: `uniform float uTime;uniform vec3 uColor;varying vec2 vUv;
      float hash(vec2 p){return fract(sin(dot(p,vec2(12.9898,78.233)))*43758.5453);}
      void main(){float flow=fract(vUv.y-uTime*0.1);float lines=step(0.98,fract(vUv.x*20.0+uTime*0.05));float dots=step(0.99,hash(vUv*50.0+floor(uTime*10.0)*0.01));
      float a=(lines*0.1+dots*0.5)*smoothstep(0.0,0.2,vUv.y)*smoothstep(1.0,0.8,vUv.y);gl_FragColor=vec4(uColor,a*0.3);}`,
  });
  thoughtStreamMesh = new THREE.Mesh(new THREE.CylinderGeometry(8, 8, 12, 32, 1, true), mat);
  thoughtStreamMesh.position.y = 6;
  scene.add(thoughtStreamMesh);
}

function createHarnessPulse() {
  const mat = new THREE.MeshBasicMaterial({ color: NEXUS.colors.primary, transparent: true, opacity: 0, side: THREE.DoubleSide });
  harnessPulseMesh = new THREE.Mesh(new THREE.RingGeometry(0.1, 0.2, 64), mat);
  harnessPulseMesh.rotation.x = -Math.PI / 2; harnessPulseMesh.position.y = 0.1;
  scene.add(harnessPulseMesh);
}

function createSessionPowerMeter() {
  const group = new THREE.Group(); group.position.set(0, 0, 3);
  const barGeo = new THREE.BoxGeometry(0.2, 0.1, 0.1);
  for (let i = 0; i < 12; i++) {
    const mat = new THREE.MeshStandardMaterial({ color: NEXUS.colors.primary, emissive: NEXUS.colors.primary, emissiveIntensity: 0.2, transparent: true, opacity: 0.6 });
    const bar = new THREE.Mesh(barGeo, mat); bar.position.y = 0.2 + i * 0.2;
    group.add(bar); powerMeterBars.push(bar);
  }
  const lc = document.createElement('canvas'); lc.width = 256; lc.height = 64;
  const ctx = lc.getContext('2d');
  ctx.font = 'bold 24px "Orbitron",sans-serif'; ctx.fillStyle = '#4af0c0'; ctx.textAlign = 'center'; ctx.fillText('POWER LEVEL', 128, 40);
  const label = new THREE.Mesh(new THREE.PlaneGeometry(2, 0.5), new THREE.MeshBasicMaterial({ map: new THREE.CanvasTexture(lc), transparent: true, side: THREE.DoubleSide }));
  label.position.y = 3; group.add(label);
  scene.add(group);
}

// ═══ DUAL-BRAIN PANEL ═══
function createDualBrainPanel() {
  dualBrainGroup = new THREE.Group();
  dualBrainGroup.position.set(10, 3, -8);
  dualBrainGroup.lookAt(0, 3, 0);
  scene.add(dualBrainGroup);

  dualBrainPanelCanvas = document.createElement('canvas');
  dualBrainPanelCanvas.width = 512; dualBrainPanelCanvas.height = 512;
  drawDualBrainTexture(null);
  dualBrainPanelTexture = new THREE.CanvasTexture(dualBrainPanelCanvas);

  const panelSprite = new THREE.Sprite(new THREE.SpriteMaterial({ map: dualBrainPanelTexture, transparent: true, opacity: 0.92, depthWrite: false }));
  panelSprite.scale.set(5, 5, 1);
  dualBrainGroup.add(panelSprite);

  dualBrainLight = new THREE.PointLight(0x4488ff, 0.6, 10);
  dualBrainLight.position.set(0, 0.5, 1);
  dualBrainGroup.add(dualBrainLight);

  const orbMat = (c) => new THREE.MeshStandardMaterial({ color: c, emissive: new THREE.Color(c), emissiveIntensity: 0.1, metalness: 0.3, roughness: 0.2, transparent: true, opacity: 0.85 });
  cloudOrb = new THREE.Mesh(new THREE.SphereGeometry(0.35, 32, 32), orbMat(0x334466));
  cloudOrb.position.set(-2, 3, 0); dualBrainGroup.add(cloudOrb);
  localOrb = new THREE.Mesh(new THREE.SphereGeometry(0.35, 32, 32), orbMat(0x334466));
  localOrb.position.set(2, 3, 0); dualBrainGroup.add(localOrb);
}

function drawDualBrainTexture(data) {
  const W = 512, H = 512, ctx = dualBrainPanelCanvas.getContext('2d');
  ctx.fillStyle = 'rgba(0,6,20,0.90)'; ctx.fillRect(0, 0, W, H);
  ctx.strokeStyle = '#4488ff'; ctx.lineWidth = 2; ctx.strokeRect(1, 1, W - 2, H - 2);
  ctx.font = 'bold 22px "Courier New",monospace'; ctx.fillStyle = '#88ccff'; ctx.textAlign = 'center';
  ctx.fillText('\u25C8 DUAL-BRAIN STATUS', W / 2, 40);
  ctx.strokeStyle = '#1a3a6a'; ctx.lineWidth = 1;
  ctx.beginPath(); ctx.moveTo(20, 52); ctx.lineTo(W - 20, 52); ctx.stroke();

  if (!data) {
    ctx.font = 'bold 18px "Courier New",monospace'; ctx.fillStyle = '#334466';
    ctx.fillText('AWAITING CONNECTION', W / 2, H / 2);
    ctx.font = '11px "Courier New",monospace'; ctx.fillStyle = '#223344';
    ctx.fillText('Connect Timmy via WebSocket', W / 2, H / 2 + 28);
  } else {
    const y = 74;
    ctx.font = '13px "Courier New",monospace'; ctx.textAlign = 'left';
    ctx.fillStyle = data.cloud?.status === 'connected' ? '#4af0c0' : '#ff4466';
    ctx.fillText(`CLOUD: ${data.cloud?.model || '—'} [${data.cloud?.status || 'offline'}]`, 20, y);
    ctx.fillStyle = data.local?.status === 'connected' ? '#4af0c0' : '#ff4466';
    ctx.fillText(`LOCAL: ${data.local?.model || '—'} [${data.local?.status || 'offline'}]`, 20, y + 24);
  }
  if (dualBrainPanelTexture) dualBrainPanelTexture.needsUpdate = true;
}

function updateDualBrainFromWS(data) {
  drawDualBrainTexture(data);
  // Activate orbs based on connection status
  if (cloudOrb && data.cloud?.status === 'connected') {
    cloudOrb.material.color.setHex(0x4488ff); cloudOrb.material.emissive.setHex(0x4488ff); cloudOrb.material.emissiveIntensity = 1.5;
  }
  if (localOrb && data.local?.status === 'connected') {
    localOrb.material.color.setHex(0x4af0c0); localOrb.material.emissive.setHex(0x4af0c0); localOrb.material.emissiveIntensity = 1.5;
  }
}

// ═══ VISION SYSTEM ═══
function createVisionPoints(data) { data.forEach(c => visionPoints.push(createVisionPoint(c))); }

function createVisionPoint(config) {
  const group = new THREE.Group();
  group.position.set(config.position.x, config.position.y, config.position.z);
  const color = new THREE.Color(config.color);
  const crystal = new THREE.Mesh(new THREE.OctahedronGeometry(0.6, 0), new THREE.MeshPhysicalMaterial({ color, emissive: color, emissiveIntensity: 1, roughness: 0, metalness: 1, transmission: 0.5, thickness: 1 }));
  crystal.position.y = 2.5; group.add(crystal);
  const ring = new THREE.Mesh(new THREE.TorusGeometry(0.8, 0.02, 16, 64), new THREE.MeshBasicMaterial({ color, transparent: true, opacity: 0.5 }));
  ring.position.y = 2.5; ring.rotation.x = Math.PI / 2; group.add(ring);
  const light = new THREE.PointLight(color, 1, 10); light.position.set(0, 2.5, 0); group.add(light);
  scene.add(group);
  return { config, group, crystal, ring, light };
}

// ═══ PORTAL SYSTEM ═══
function createPortals(data) { data.forEach(c => portals.push(createPortal(c))); }

function createPortal(config) {
  const group = new THREE.Group();
  group.position.set(config.position.x, config.position.y, config.position.z);
  if (config.rotation) group.rotation.y = config.rotation.y;
  const pc = new THREE.Color(config.color);

  // Ring
  const ring = new THREE.Mesh(new THREE.TorusGeometry(3, 0.15, 16, 64), new THREE.MeshStandardMaterial({ color: pc, emissive: pc, emissiveIntensity: 1.5, roughness: 0.2, metalness: 0.8 }));
  ring.position.y = 3.5; ring.name = `portal_ring_${config.id}`; group.add(ring);

  // Swirl
  const swirlMat = new THREE.ShaderMaterial({
    transparent: true, side: THREE.DoubleSide,
    uniforms: { uTime: { value: 0 }, uColor: { value: pc } },
    vertexShader: `varying vec2 vUv; void main(){vUv=uv;gl_Position=projectionMatrix*modelViewMatrix*vec4(position,1.0);}`,
    fragmentShader: `uniform float uTime;uniform vec3 uColor;varying vec2 vUv;void main(){vec2 c=vUv-0.5;float r=length(c),a=atan(c.y,c.x);float s1=sin(a*3.0+r*10.0-uTime*3.0)*0.5+0.5,s2=sin(a*5.0-r*8.0+uTime*2.0)*0.5+0.5;float mask=smoothstep(0.5,0.1,r);vec3 col=mix(mix(uColor,vec3(1),s1*0.3),vec3(1),s2*0.2);gl_FragColor=vec4(col,mask*(0.5+0.3*s1));}`,
  });
  const swirl = new THREE.Mesh(new THREE.CircleGeometry(2.8, 64), swirlMat);
  swirl.position.y = 3.5; group.add(swirl);

  // Particles
  const pCount = 120, pPos = new Float32Array(pCount * 3);
  for (let i = 0; i < pCount; i++) {
    const angle = Math.random() * Math.PI * 2, r = 3.2 + Math.random() * 0.5;
    pPos[i*3] = Math.cos(angle)*r; pPos[i*3+1] = 3.5 + (Math.random()-0.5)*6; pPos[i*3+2] = (Math.random()-0.5)*0.5;
  }
  const pGeo = new THREE.BufferGeometry();
  pGeo.setAttribute('position', new THREE.BufferAttribute(pPos, 3));
  const pSystem = new THREE.Points(pGeo, new THREE.PointsMaterial({ color: pc, size: 0.08, transparent: true, opacity: 0.6, blending: THREE.AdditiveBlending, depthWrite: false }));
  group.add(pSystem);

  // Light
  const light = new THREE.PointLight(pc, 2, 15, 1.5); light.position.set(0, 3.5, 1); group.add(light);

  // Runes
  const runes = [];
  for (let i = 0; i < 8; i++) {
    const angle = (i / 8) * Math.PI * 2;
    const rune = new THREE.Mesh(new THREE.BoxGeometry(0.3, 0.8, 0.1), new THREE.MeshStandardMaterial({ color: pc, emissive: pc, emissiveIntensity: 0.8, transparent: true, opacity: 0.7, roughness: 0.2, metalness: 0.5 }));
    rune.position.set(Math.cos(angle) * 4.5, 4, Math.sin(angle) * 4.5);
    rune.rotation.y = angle + Math.PI / 2; group.add(rune); runes.push(rune);
  }

  // Label
  const lc = document.createElement('canvas'); lc.width = 512; lc.height = 64;
  const lctx = lc.getContext('2d');
  lctx.font = 'bold 32px "Orbitron",sans-serif'; lctx.fillStyle = '#' + pc.getHexString();
  lctx.textAlign = 'center'; lctx.fillText(`\u25C8 ${config.name.toUpperCase()}`, 256, 42);
  const labelMesh = new THREE.Mesh(new THREE.PlaneGeometry(4, 0.5), new THREE.MeshBasicMaterial({ map: new THREE.CanvasTexture(lc), transparent: true, side: THREE.DoubleSide }));
  labelMesh.position.y = 7.5; group.add(labelMesh);

  // Pillars
  for (const side of [-1, 1]) {
    const pillar = new THREE.Mesh(new THREE.CylinderGeometry(0.2, 0.3, 7, 8), new THREE.MeshStandardMaterial({ color: 0x1a1a2e, roughness: 0.5, metalness: 0.7, emissive: pc, emissiveIntensity: 0.1 }));
    pillar.position.set(side * 3, 3.5, 0); pillar.castShadow = true; group.add(pillar);
  }

  scene.add(group);
  return { config, group, ring, swirl, pSystem, light, runes };
}

// ═══ PARTICLES ═══
function createParticles() {
  const count = particleCount(1500);
  const positions = new Float32Array(count * 3), colors = new Float32Array(count * 3), sizes = new Float32Array(count);
  const c1 = new THREE.Color(NEXUS.colors.primary), c2 = new THREE.Color(NEXUS.colors.secondary), c3 = new THREE.Color(NEXUS.colors.gold);
  for (let i = 0; i < count; i++) {
    positions[i*3] = (Math.random()-0.5)*60; positions[i*3+1] = Math.random()*20; positions[i*3+2] = (Math.random()-0.5)*60;
    const t = Math.random(), col = t < 0.5 ? c1.clone().lerp(c2, t*2) : c2.clone().lerp(c3, (t-0.5)*2);
    colors[i*3] = col.r; colors[i*3+1] = col.g; colors[i*3+2] = col.b;
    sizes[i] = 0.02 + Math.random() * 0.06;
  }
  const geo = new THREE.BufferGeometry();
  geo.setAttribute('position', new THREE.BufferAttribute(positions, 3));
  geo.setAttribute('color', new THREE.BufferAttribute(colors, 3));
  geo.setAttribute('size', new THREE.BufferAttribute(sizes, 1));
  particles = new THREE.Points(geo, new THREE.ShaderMaterial({
    uniforms: { uTime: { value: 0 } },
    vertexShader: `attribute float size;attribute vec3 color;varying vec3 vColor;uniform float uTime;void main(){vColor=color;vec3 p=position;p.y+=sin(uTime*0.5+position.x*0.5)*0.3;p.x+=sin(uTime*0.3+position.z*0.4)*0.2;vec4 mv=modelViewMatrix*vec4(p,1.0);gl_PointSize=size*300.0/-mv.z;gl_Position=projectionMatrix*mv;}`,
    fragmentShader: `varying vec3 vColor;void main(){float d=length(gl_PointCoord-0.5);if(d>0.5)discard;gl_FragColor=vec4(vColor,smoothstep(0.5,0.1,d)*0.7);}`,
    transparent: true, depthWrite: false, blending: THREE.AdditiveBlending,
  }));
  scene.add(particles);
}

function createDustParticles() {
  const count = particleCount(500), positions = new Float32Array(count * 3);
  for (let i = 0; i < count; i++) {
    positions[i*3] = (Math.random()-0.5)*40; positions[i*3+1] = Math.random()*15; positions[i*3+2] = (Math.random()-0.5)*40;
  }
  const geo = new THREE.BufferGeometry();
  geo.setAttribute('position', new THREE.BufferAttribute(positions, 3));
  dustParticles = new THREE.Points(geo, new THREE.PointsMaterial({ color: 0x8899bb, size: 0.03, transparent: true, opacity: 0.3, depthWrite: false }));
  scene.add(dustParticles);
}

// ═══ AMBIENT STRUCTURES ═══
function createAmbientStructures() {
  const crystalMat = new THREE.MeshPhysicalMaterial({ color: 0x3355aa, roughness: 0.1, metalness: 0.2, transmission: 0.6, thickness: 2, emissive: 0x1122aa, emissiveIntensity: 0.3 });
  [{ x:-18,z:-15,s:1.5,ry:0.3 },{x:-20,z:-10,s:1,ry:0.8},{x:-15,z:-18,s:2,ry:1.2},{x:18,z:-15,s:1.8,ry:2.1},{x:20,z:-12,s:1.2,ry:0.5},{x:-12,z:18,s:1.3,ry:1.8},{x:14,z:16,s:1.6,ry:0.9}]
    .forEach(p => {
      const c = new THREE.Mesh(new THREE.ConeGeometry(0.4*p.s, 2.5*p.s, 5), crystalMat.clone());
      c.position.set(p.x, 1.25*p.s, p.z); c.rotation.y = p.ry; c.rotation.z = (Math.random()-0.5)*0.3; c.castShadow = true;
      scene.add(c);
    });

  const core = new THREE.Mesh(new THREE.IcosahedronGeometry(0.6, 2), new THREE.MeshPhysicalMaterial({ color: 0x4af0c0, emissive: 0x4af0c0, emissiveIntensity: 2, roughness: 0, metalness: 1, transmission: 0.3, thickness: 1 }));
  core.position.set(0, 2.5, 0); core.name = 'nexus-core'; scene.add(core);

  const pedestal = new THREE.Mesh(new THREE.CylinderGeometry(0.8, 1.2, 1.5, 8), new THREE.MeshStandardMaterial({ color: 0x0a0f1a, roughness: 0.4, metalness: 0.8, emissive: 0x1a2a4a, emissiveIntensity: 0.3 }));
  pedestal.position.set(0, 0.75, 0); pedestal.castShadow = true; scene.add(pedestal);
}

// ═══ NAVIGATION ═══
function cycleNavMode() {
  navModeIdx = (navModeIdx + 1) % NAV_MODES.length;
  const mode = NAV_MODES[navModeIdx];
  if (mode === 'orbit') {
    const dir = new THREE.Vector3(0, 0, -1).applyEuler(playerRot);
    orbitState.target.copy(playerPos).addScaledVector(dir, orbitState.radius);
    orbitState.target.y = Math.max(0, orbitState.target.y);
    const toCamera = new THREE.Vector3().subVectors(playerPos, orbitState.target);
    orbitState.radius = toCamera.length();
    orbitState.theta = Math.atan2(toCamera.x, toCamera.z);
    orbitState.phi = Math.acos(Math.max(-1, Math.min(1, toCamera.y / orbitState.radius)));
  }
  if (mode === 'fly') flyY = playerPos.y;
  const el = document.getElementById('nav-mode-label'); if (el) el.textContent = mode.toUpperCase();
}

// ═══ CONTROLS ═══
function setupControls() {
  const chatInput = document.getElementById('chat-input');
  document.addEventListener('keydown', (e) => {
    keys[e.key.toLowerCase()] = true;
    if (e.key === 'Enter') { e.preventDefault(); document.activeElement === chatInput ? sendChatMessage() : chatInput.focus(); }
    if (e.key === 'Escape') { chatInput.blur(); if (portalOverlayActive) closePortalOverlay(); if (visionOverlayActive) closeVisionOverlay(); }
    if (e.key.toLowerCase() === 'v' && document.activeElement !== chatInput) cycleNavMode();
    if (e.key.toLowerCase() === 'f' && activePortal && !portalOverlayActive) activatePortal(activePortal);
    if (e.key.toLowerCase() === 'e' && activeVisionPoint && !visionOverlayActive) activateVisionPoint(activeVisionPoint);
  });
  document.addEventListener('keyup', (e) => { keys[e.key.toLowerCase()] = false; });

  const canvas = document.getElementById('nexus-canvas');
  canvas.addEventListener('mousedown', (e) => {
    if (e.target !== canvas) return;
    mouseDown = true; orbitState.lastX = e.clientX; orbitState.lastY = e.clientY;
    if (!portalOverlayActive) {
      const mouse = new THREE.Vector2((e.clientX/window.innerWidth)*2-1, -(e.clientY/window.innerHeight)*2+1);
      const rc = new THREE.Raycaster(); rc.setFromCamera(mouse, camera);
      const hit = rc.intersectObjects(portals.map(p => p.ring));
      if (hit.length) { const p = portals.find(p => p.ring === hit[0].object); if (p) activatePortal(p); }
    }
  });
  document.addEventListener('mouseup', () => { mouseDown = false; });
  document.addEventListener('mousemove', (e) => {
    if (!mouseDown || document.activeElement === chatInput) return;
    if (NAV_MODES[navModeIdx] === 'orbit') {
      orbitState.theta -= (e.clientX - orbitState.lastX) * 0.005;
      orbitState.phi = Math.max(0.05, Math.min(Math.PI * 0.85, orbitState.phi + (e.clientY - orbitState.lastY) * 0.005));
      orbitState.lastX = e.clientX; orbitState.lastY = e.clientY;
    } else {
      playerRot.y -= e.movementX * 0.003;
      playerRot.x = Math.max(-Math.PI/3, Math.min(Math.PI/3, playerRot.x - e.movementY * 0.003));
    }
  });
  canvas.addEventListener('wheel', (e) => {
    if (NAV_MODES[navModeIdx] === 'orbit') orbitState.radius = Math.max(orbitState.minR, Math.min(orbitState.maxR, orbitState.radius + e.deltaY * 0.02));
  }, { passive: true });

  document.getElementById('chat-toggle').addEventListener('click', () => { chatOpen = !chatOpen; document.getElementById('chat-panel').classList.toggle('collapsed', !chatOpen); });
  document.getElementById('chat-send').addEventListener('click', sendChatMessage);
  document.getElementById('portal-close-btn').addEventListener('click', closePortalOverlay);
  document.getElementById('vision-close-btn').addEventListener('click', closeVisionOverlay);
}

// ═══ CHAT ═══
function sendChatMessage() {
  const input = document.getElementById('chat-input');
  const text = input.value.trim();
  if (!text) return;
  addChatMessage('user', text);
  input.value = '';

  const timmy = agents.find(a => a.id === 'timmy');
  if (wsConnected) {
    wsSend({ type: 'chat_message', text, sender: 'Alexander' });
    if (timmy) { timmy.activityLocked = true; setAgentActivity(timmy, ACTIVITY_STATES.THINKING); }
  } else {
    addChatMessage('system', 'OFFLINE — Timmy is not connected. Start gateway: ws://hermes:8765');
    if (timmy) { setAgentActivity(timmy, ACTIVITY_STATES.NONE); timmy.activityLocked = false; }
  }
  input.blur();
}

function addChatMessage(type, text) {
  const container = document.getElementById('chat-messages');
  const div = document.createElement('div');
  div.className = `chat-msg chat-msg-${type}`;
  const prefixes = { user: '[ALEXANDER]', timmy: '[TIMMY]', system: '[NEXUS]', error: '[ERROR]' };
  div.innerHTML = `<span class="chat-msg-prefix">${prefixes[type] || '[???]'}</span> ${text}`;
  container.appendChild(div);
  container.scrollTop = container.scrollHeight;
}

// ═══ PORTAL INTERACTION ═══
function checkPortalProximity() {
  if (portalOverlayActive) return;
  let closest = null, minDist = Infinity;
  portals.forEach(p => { const d = playerPos.distanceTo(p.group.position); if (d < 4.5 && d < minDist) { minDist = d; closest = p; } });
  activePortal = closest;
  const hint = document.getElementById('portal-hint');
  if (activePortal) { document.getElementById('portal-hint-name').textContent = activePortal.config.name; hint.style.display = 'flex'; }
  else hint.style.display = 'none';
}

function activatePortal(portal) {
  portalOverlayActive = true;
  document.getElementById('portal-name-display').textContent = portal.config.name.toUpperCase();
  document.getElementById('portal-desc-display').textContent = portal.config.description;
  const dot = document.getElementById('portal-status-dot');
  dot.style.background = portal.config.color; dot.style.boxShadow = `0 0 10px ${portal.config.color}`;
  document.getElementById('portal-overlay').style.display = 'flex';

  if (portal.config.destination?.url) {
    document.getElementById('portal-redirect-box').style.display = 'block';
    document.getElementById('portal-error-box').style.display = 'none';
    let count = 5;
    document.getElementById('portal-timer').textContent = count;
    const iv = setInterval(() => {
      if (--count <= 0) { clearInterval(iv); if (portalOverlayActive) window.location.href = portal.config.destination.url; }
      if (!portalOverlayActive) clearInterval(iv);
      document.getElementById('portal-timer').textContent = count;
    }, 1000);
  } else {
    document.getElementById('portal-redirect-box').style.display = 'none';
    document.getElementById('portal-error-box').style.display = 'block';
  }
}

function closePortalOverlay() { portalOverlayActive = false; document.getElementById('portal-overlay').style.display = 'none'; }

// ═══ VISION INTERACTION ═══
function checkVisionProximity() {
  if (visionOverlayActive) return;
  let closest = null, minDist = Infinity;
  visionPoints.forEach(vp => { const d = playerPos.distanceTo(vp.group.position); if (d < 3.5 && d < minDist) { minDist = d; closest = vp; } });
  activeVisionPoint = closest;
  const hint = document.getElementById('vision-hint');
  if (activeVisionPoint) { document.getElementById('vision-hint-title').textContent = activeVisionPoint.config.title; hint.style.display = 'flex'; }
  else hint.style.display = 'none';
}

function activateVisionPoint(vp) {
  visionOverlayActive = true;
  document.getElementById('vision-title-display').textContent = vp.config.title.toUpperCase();
  document.getElementById('vision-content-display').textContent = vp.config.content;
  const dot = document.getElementById('vision-status-dot');
  dot.style.background = vp.config.color; dot.style.boxShadow = `0 0 10px ${vp.config.color}`;
  document.getElementById('vision-overlay').style.display = 'flex';
}

function closeVisionOverlay() { visionOverlayActive = false; document.getElementById('vision-overlay').style.display = 'none'; }

// ═══ GAME LOOP ═══
let pulseTimer = 0;

function gameLoop() {
  requestAnimationFrame(gameLoop);
  const delta = Math.min(clock.getDelta(), 0.1), elapsed = clock.elapsedTime;

  // Harness Pulse
  pulseTimer += delta;
  if (pulseTimer > 8) { pulseTimer = 0; triggerHarnessPulse(); }
  if (harnessPulseMesh) { harnessPulseMesh.scale.addScalar(delta * 15); harnessPulseMesh.material.opacity = Math.max(0, harnessPulseMesh.material.opacity - delta * 0.5); }

  // Navigation
  const mode = NAV_MODES[navModeIdx];
  const chatActive = document.activeElement === document.getElementById('chat-input');

  if (mode === 'walk') {
    if (!chatActive && !portalOverlayActive) {
      const speed = 6 * delta, dir = new THREE.Vector3();
      if (keys['w']) dir.z -= 1; if (keys['s']) dir.z += 1; if (keys['a']) dir.x -= 1; if (keys['d']) dir.x += 1;
      if (dir.length() > 0) { dir.normalize().multiplyScalar(speed).applyAxisAngle(new THREE.Vector3(0,1,0), playerRot.y); playerPos.add(dir); const d = Math.sqrt(playerPos.x**2+playerPos.z**2); if (d > 24) { playerPos.x *= 24/d; playerPos.z *= 24/d; } }
    }
    playerPos.y = 2; camera.position.copy(playerPos); camera.rotation.set(playerRot.x, playerRot.y, 0, 'YXZ');
  } else if (mode === 'orbit') {
    if (!chatActive && !portalOverlayActive) {
      const speed = 8 * delta, pan = new THREE.Vector3();
      if (keys['w']) pan.z -= 1; if (keys['s']) pan.z += 1; if (keys['a']) pan.x -= 1; if (keys['d']) pan.x += 1;
      if (pan.length() > 0) { pan.normalize().multiplyScalar(speed).applyAxisAngle(new THREE.Vector3(0,1,0), orbitState.theta); orbitState.target.add(pan); orbitState.target.y = Math.max(0, Math.min(20, orbitState.target.y)); }
    }
    const r = orbitState.radius;
    camera.position.set(orbitState.target.x+r*Math.sin(orbitState.phi)*Math.sin(orbitState.theta), orbitState.target.y+r*Math.cos(orbitState.phi), orbitState.target.z+r*Math.sin(orbitState.phi)*Math.cos(orbitState.theta));
    camera.lookAt(orbitState.target); playerPos.copy(camera.position); playerRot.y = orbitState.theta;
  } else if (mode === 'fly') {
    if (!chatActive && !portalOverlayActive) {
      const speed = 8 * delta;
      const fwd = new THREE.Vector3(-Math.sin(playerRot.y), 0, -Math.cos(playerRot.y));
      const right = new THREE.Vector3(Math.cos(playerRot.y), 0, -Math.sin(playerRot.y));
      if (keys['w']) playerPos.addScaledVector(fwd, speed); if (keys['s']) playerPos.addScaledVector(fwd, -speed);
      if (keys['a']) playerPos.addScaledVector(right, -speed); if (keys['d']) playerPos.addScaledVector(right, speed);
      if (keys['q'] || keys[' ']) flyY += speed; if (keys['e'] || keys['shift']) flyY -= speed;
      flyY = Math.max(0.5, Math.min(30, flyY)); playerPos.y = flyY;
    }
    camera.position.copy(playerPos); camera.rotation.set(playerRot.x, playerRot.y, 0, 'YXZ');
  }

  checkPortalProximity();
  checkVisionProximity();

  // Animate scene
  const sky = scene.getObjectByName('skybox');
  if (sky) sky.material.uniforms.uTime.value = elapsed;
  if (heatmapMat) heatmapMat.opacity = 0.75 + Math.sin(elapsed * 0.6) * 0.2;
  batcaveTerminals.forEach(t => { if (t.scanMat?.uniforms) t.scanMat.uniforms.uTime.value = elapsed; });

  // Portals
  portals.forEach(p => {
    p.ring.rotation.z = elapsed * 0.3; p.ring.rotation.x = Math.sin(elapsed * 0.5) * 0.1;
    if (p.swirl.material.uniforms) p.swirl.material.uniforms.uTime.value = elapsed;
    p.light.intensity = 1.5 + Math.sin(elapsed * 2) * 0.5;
    const pos = p.pSystem.geometry.attributes.position.array;
    for (let i = 0; i < pos.length / 3; i++) pos[i*3+1] += Math.sin(elapsed + i) * 0.002;
    p.pSystem.geometry.attributes.position.needsUpdate = true;
    p.runes.forEach((rune, i) => { rune.position.y = 4 + Math.sin(elapsed*2+i*0.5)*0.2; rune.rotation.z = elapsed*0.8+i; });
  });

  // Vision points
  visionPoints.forEach(vp => {
    vp.crystal.rotation.y = elapsed * 0.8; vp.crystal.rotation.x = Math.sin(elapsed * 0.5) * 0.2;
    vp.crystal.position.y = 2.5 + Math.sin(elapsed * 1.5) * 0.2;
    vp.ring.rotation.z = elapsed * 0.5; vp.ring.scale.setScalar(1 + Math.sin(elapsed * 2) * 0.05);
    vp.light.intensity = 1 + Math.sin(elapsed * 3) * 0.3;
  });

  // Agents
  updateAgents(elapsed, delta);

  // Dual-brain float
  if (dualBrainGroup) {
    dualBrainGroup.position.y = 3 + Math.sin(elapsed * 0.22) * 0.15;
    if (cloudOrb) { cloudOrb.position.y = 3 + Math.sin(elapsed*1.3)*0.15; cloudOrb.rotation.y = elapsed*0.4; }
    if (localOrb) { localOrb.position.y = 3 + Math.sin(elapsed*1.3+Math.PI)*0.15; localOrb.rotation.y = -elapsed*0.4; }
    if (dualBrainLight) dualBrainLight.intensity = 0.4 + Math.sin(elapsed*1.5)*0.2;
  }

  // Power meter
  powerMeterBars.forEach((bar, i) => {
    const level = Math.sin(elapsed*2+i*0.5)*0.5+0.5, active = level > i/powerMeterBars.length;
    bar.material.emissiveIntensity = active ? 2 : 0.2; bar.material.opacity = active ? 0.9 : 0.3; bar.scale.x = active ? 1.2 : 1;
  });

  if (voidLight) voidLight.intensity = 0.35 + Math.sin(elapsed * 1.4) * 0.2;
  if (thoughtStreamMesh) { thoughtStreamMesh.material.uniforms.uTime.value = elapsed; thoughtStreamMesh.rotation.y = elapsed * 0.05; }
  if (particles?.material?.uniforms) particles.material.uniforms.uTime.value = elapsed;
  if (dustParticles) dustParticles.rotation.y = elapsed * 0.01;

  const core = scene.getObjectByName('nexus-core');
  if (core) { core.position.y = 2.5 + Math.sin(elapsed*1.2)*0.3; core.rotation.y = elapsed*0.4; core.rotation.x = elapsed*0.2; core.material.emissiveIntensity = 1.5 + Math.sin(elapsed*2)*0.5; }

  composer.render();

  frameCount++;
  const now = performance.now();
  if (now - lastFPSTime >= 1000) { fps = frameCount; frameCount = 0; lastFPSTime = now; }
  if (debugOverlay) {
    const info = renderer.info;
    debugOverlay.textContent = `FPS: ${fps}  Draw: ${info.render?.calls}  Tri: ${info.render?.triangles}  [${performanceTier}]  WS: ${wsConnected ? 'ON' : 'OFF'}\nPos: ${playerPos.x.toFixed(1)}, ${playerPos.y.toFixed(1)}, ${playerPos.z.toFixed(1)}  NAV: ${NAV_MODES[navModeIdx]}`;
  }
  renderer.info.reset();
}

function onResize() {
  const w = window.innerWidth, h = window.innerHeight;
  camera.aspect = w / h; camera.updateProjectionMatrix();
  renderer.setSize(w, h); composer.setSize(w, h);
}

// ═══ AGENT ANIMATION ═══
function updateAgents(elapsed, delta) {
  const ATTENTION_RADIUS = 7;
  agents.forEach((agent, i) => {
    const station = new THREE.Vector3(agent.station.x, 0, agent.station.z);
    const toPlayer = new THREE.Vector3(playerPos.x - agent.group.position.x, 0, playerPos.z - agent.group.position.z);
    const playerNearby = toPlayer.length() < ATTENTION_RADIUS && !agent.activityLocked;

    if (playerNearby) {
      const ta = Math.atan2(toPlayer.x, toPlayer.z);
      agent.group.rotation.y += ((ta - agent.group.rotation.y + Math.PI*3) % (Math.PI*2) - Math.PI) * Math.min(delta*3, 1);
    }

    if (!playerNearby && !agent.activityLocked) {
      agent.stateTimer -= delta;
      if (agent.stateTimer <= 0) {
        agent.state = pickNextState();
        agent.stateTimer = agent.state === 'IDLE' ? 4+Math.random()*6 : agent.state === 'PACING' ? 8+Math.random()*6 : 4+Math.random()*4;
        if (agent.state === 'PACING') agent.pacingIdx = 0;
        if (agent.state === 'LOOKING') agent.lookAngle = agent.group.rotation.y;
        if (agent.state !== 'PACING') agent.targetPos.copy(station);
      }
      if (agent.state === 'PACING') {
        const wp = agent.pacingPath[agent.pacingIdx];
        const toWp = new THREE.Vector3(wp.x - agent.group.position.x, 0, wp.z - agent.group.position.z);
        if (toWp.length() < 0.3) agent.pacingIdx = (agent.pacingIdx + 1) % agent.pacingPath.length;
        else { agent.group.position.addScaledVector(toWp.normalize(), delta*1.2); agent.group.rotation.y += (Math.atan2(toWp.x,toWp.z)-agent.group.rotation.y)*Math.min(delta*4,1); }
      } else if (agent.state === 'READING') {
        const tt = new THREE.Vector3(-agent.group.position.x, 0, -8-agent.group.position.z);
        agent.group.rotation.y += (Math.atan2(tt.x,tt.z)-agent.group.rotation.y)*Math.min(delta*2,1);
        agent.group.position.lerp(agent.targetPos, delta*0.4);
      } else if (agent.state === 'LOOKING') {
        agent.lookAngle += Math.sin(elapsed*agent.lookSpeed+i)*delta*0.8;
        agent.group.rotation.y += (agent.lookAngle-agent.group.rotation.y)*Math.min(delta*1.5,1);
        agent.group.position.lerp(agent.targetPos, delta*0.3);
      } else {
        agent.group.position.lerp(agent.targetPos, delta*0.3);
      }
    }

    // Orb & halo
    const bob = agent.activityState === ACTIVITY_STATES.THINKING ? 0.25 : 0.15;
    agent.orb.position.y = 3 + Math.sin(elapsed*2+i)*bob;
    agent.halo.rotation.z = elapsed * 0.5; agent.halo.scale.setScalar(1 + Math.sin(elapsed*3+i)*0.1);
    agent.orb.material.emissiveIntensity = (agent.activityState === ACTIVITY_STATES.NONE ? 2 : 3) + Math.sin(elapsed*4+i);

    // Activity indicators
    if (agent.activityState !== ACTIVITY_STATES.NONE) {
      agent.indicator.group.position.y = 4.2 + Math.sin(elapsed*2+i*1.3)*0.1;
      if (agent.activityState === ACTIVITY_STATES.WAITING) { const p = 0.7+Math.sin(elapsed*4+i)*0.3; agent.indicator.waitMesh.scale.setScalar(p); agent.indicator.waitMesh.material.opacity = 0.5+p*0.35; }
      else if (agent.activityState === ACTIVITY_STATES.THINKING) { agent.indicator.thinkMesh.rotation.y = elapsed*2.5; agent.indicator.thinkMesh.rotation.x = elapsed*1.5; }
      else if (agent.activityState === ACTIVITY_STATES.PROCESSING) { agent.indicator.procMesh.rotation.z = elapsed*4; agent.indicator.procMesh.rotation.x = Math.sin(elapsed*1.2)*0.5; }
      const tc = new THREE.Vector3(camera.position.x-agent.group.position.x, 0, camera.position.z-agent.group.position.z);
      if (tc.length() > 0.01) agent.indicator.group.rotation.y = Math.atan2(tc.x, tc.z);
    }
  });
}

function addAgentLog(agentId, text) {
  const container = document.getElementById('agent-log-content');
  if (!container) return;
  const entry = document.createElement('div');
  entry.className = 'agent-log-entry';
  entry.innerHTML = `<span class="agent-log-tag tag-${agentId}">[${agentId.toUpperCase()}]</span><span class="agent-log-text">${text}</span>`;
  container.prepend(entry);
  if (container.children.length > 6) container.lastElementChild.remove();
}

function triggerHarnessPulse() {
  if (!harnessPulseMesh) return;
  harnessPulseMesh.scale.setScalar(0.1); harnessPulseMesh.material.opacity = 0.8;
  const core = scene.getObjectByName('nexus-core');
  if (core) { core.material.emissiveIntensity = 10; setTimeout(() => { if (core) core.material.emissiveIntensity = 2; }, 200); }
}

// ═══ BITCOIN BLOCK HEIGHT ═══
(function initBitcoin() {
  const display = document.getElementById('block-height-display');
  const value = document.getElementById('block-height-value');
  if (!display || !value) return;
  let lastHeight = null;
  async function fetch_() {
    try {
      const res = await fetch('https://blockstream.info/api/blocks/tip/height');
      if (!res.ok) return;
      const h = parseInt(await res.text(), 10);
      if (isNaN(h)) return;
      if (lastHeight !== null && h !== lastHeight) { display.classList.remove('fresh'); void display.offsetWidth; display.classList.add('fresh'); }
      lastHeight = h; value.textContent = h.toLocaleString();
    } catch (_) {}
  }
  fetch_(); setInterval(fetch_, 60000);
})();

init();