// ── PARTICLE CANVAS ───────────────────────────────────────────────────
(function initParticles() {
  const canvas = document.getElementById('particleCanvas');
  if (!canvas) return;
  const ctx = canvas.getContext('2d');
  const N = 65;
  const CONNECT_DIST = 130;
  let W, H, particles = [];

  function resize() {
    W = canvas.width  = window.innerWidth;
    H = canvas.height = window.innerHeight;
  }

  function spawn() {
    particles = [];
    for (let i = 0; i < N; i++) {
      particles.push({
        x:  Math.random() * W,
        y:  Math.random() * H,
        vx: (Math.random() - 0.5) * 0.25,
        vy: (Math.random() - 0.5) * 0.25,
        r:  Math.random() * 1.2 + 0.4,
        a:  Math.random() * 0.35 + 0.08,
      });
    }
  }

  function draw() {
    ctx.clearRect(0, 0, W, H);
    for (let i = 0; i < N; i++) {
      const p = particles[i];
      for (let j = i + 1; j < N; j++) {
        const q = particles[j];
        const dx = p.x - q.x, dy = p.y - q.y;
        const d = Math.sqrt(dx * dx + dy * dy);
        if (d < CONNECT_DIST) {
          ctx.strokeStyle = `rgba(0,180,255,${0.09 * (1 - d / CONNECT_DIST)})`;
          ctx.lineWidth = 0.5;
          ctx.beginPath(); ctx.moveTo(p.x, p.y); ctx.lineTo(q.x, q.y); ctx.stroke();
        }
      }
      ctx.fillStyle = `rgba(0,200,255,${p.a})`;
      ctx.beginPath(); ctx.arc(p.x, p.y, p.r, 0, Math.PI * 2); ctx.fill();
      p.x += p.vx; p.y += p.vy;
      if (p.x < 0) p.x = W; if (p.x > W) p.x = 0;
      if (p.y < 0) p.y = H; if (p.y > H) p.y = 0;
    }
    requestAnimationFrame(draw);
  }

  resize(); spawn(); draw();
  window.addEventListener('resize', () => { resize(); spawn(); });
})();

// ── PANEL FLOAT STAGGER — different phase per panel ───────────────────
document.addEventListener('DOMContentLoaded', () => {
  document.querySelectorAll('.panel').forEach((p, i) => {
    p.style.animationDelay = `-${(i * 1.37).toFixed(2)}s`;
  });
});

// ── MOUSE PARALLAX — panels tilt toward cursor ────────────────────────
(function initParallax() {
  const MAX_TILT = 3.5; // degrees
  let mouseX = 0, mouseY = 0, raf = null;

  window.addEventListener('mousemove', e => {
    mouseX = e.clientX / window.innerWidth  - 0.5;  // -0.5 to 0.5
    mouseY = e.clientY / window.innerHeight - 0.5;
    if (!raf) raf = requestAnimationFrame(applyTilt);
  });

  function applyTilt() {
    raf = null;
    const rx =  mouseY * MAX_TILT;
    const ry = -mouseX * MAX_TILT;
    document.querySelectorAll('.panel').forEach(p => {
      p.style.setProperty('--prx', rx.toFixed(2) + 'deg');
      p.style.setProperty('--pry', ry.toFixed(2) + 'deg');
    });
    // Column-level parallax (skip in focus mode)
    if (!document.getElementById('mainLayout')?.classList.contains('focus-mode')) {
      const lp = document.getElementById('leftPanel');
      const rp = document.getElementById('rightPanel');
      const cp = document.getElementById('centerPanel');
      if (lp) lp.style.transform = `translateX(${mouseX * 5}px) translateY(${mouseY * 3}px)`;
      if (rp) rp.style.transform = `translateX(${-mouseX * 5}px) translateY(${mouseY * 3}px)`;
      if (cp) cp.style.transform = `translateX(${mouseX * 2}px)`;
    }
  }
})();

// ── SPARKLINES ────────────────────────────────────────────────────────
const _sparkData = {cpu: [], mem: [], disk: []};
const SPARK_MAX = 25;

function pushSparkData(key, val) {
  _sparkData[key].push(val);
  if (_sparkData[key].length > SPARK_MAX) _sparkData[key].shift();
}

function drawSparkline(canvasId, data, color) {
  const canvas = document.getElementById(canvasId);
  if (!canvas || !data.length) return;
  const wrap = canvas.parentElement;
  canvas.width  = wrap.clientWidth  || 240;
  canvas.height = 32;
  const ctx = canvas.getContext('2d');
  ctx.clearRect(0, 0, canvas.width, canvas.height);

  const W = canvas.width, H = canvas.height;
  const min = 0, max = 100;
  const step = W / (SPARK_MAX - 1);

  // Fill area under line
  const grad = ctx.createLinearGradient(0, 0, 0, H);
  grad.addColorStop(0, color.replace(')', ',0.35)').replace('rgb','rgba'));
  grad.addColorStop(1, color.replace(')', ',0)').replace('rgb','rgba'));
  ctx.beginPath();
  data.forEach((v, i) => {
    const x = i * step;
    const y = H - ((v - min) / (max - min)) * H;
    i === 0 ? ctx.moveTo(x, y) : ctx.lineTo(x, y);
  });
  ctx.lineTo((data.length - 1) * step, H);
  ctx.lineTo(0, H);
  ctx.closePath();
  ctx.fillStyle = grad;
  ctx.fill();

  // Line
  ctx.beginPath();
  data.forEach((v, i) => {
    const x = i * step;
    const y = H - ((v - min) / (max - min)) * H;
    i === 0 ? ctx.moveTo(x, y) : ctx.lineTo(x, y);
  });
  ctx.strokeStyle = color;
  ctx.lineWidth = 1.5;
  ctx.stroke();

  // Current value dot
  if (data.length > 1) {
    const last = data[data.length - 1];
    const x = (data.length - 1) * step;
    const y = H - ((last - min) / (max - min)) * H;
    ctx.beginPath();
    ctx.arc(x, y, 2.5, 0, Math.PI * 2);
    ctx.fillStyle = color;
    ctx.fill();
    ctx.strokeStyle = 'rgba(0,0,0,0.5)';
    ctx.lineWidth = 1;
    ctx.stroke();
  }
}

// ── PANEL DATA FLASH ──────────────────────────────────────────────────
function flashPanel(panelEl) {
  if (!panelEl) return;
  panelEl.classList.remove('data-flash');
  void panelEl.offsetWidth; // reflow to restart animation
  panelEl.classList.add('data-flash');
  setTimeout(() => panelEl.classList.remove('data-flash'), 600);
}

// ── ALERT PULSE ───────────────────────────────────────────────────────
function setAlertState(hasAlerts) {
  const ov = document.getElementById('alertOverlay');
  if (ov) ov.style.display = hasAlerts ? 'block' : 'none';
  const vg = document.getElementById('vignetteOverlay');
  if (vg) vg.classList.toggle('alert-vignette', hasAlerts);
}

function setSystemHealth(level) {
  // level: 'ok' | 'warning' | 'critical'
  const reactor = document.getElementById('arcReactor');
  if (!reactor) return;
  reactor.classList.remove('health-warning', 'health-critical');
  if (level === 'warning')  reactor.classList.add('health-warning');
  if (level === 'critical') reactor.classList.add('health-critical');
  // Also update topbar logo dot
  const dot = document.querySelector('.tb-logo-dot');
  if (dot) {
    dot.style.background = level === 'critical' ? 'var(--red)' : level === 'warning' ? '#f5a623' : 'var(--cyan)';
    dot.style.boxShadow  = level === 'critical' ? '0 0 8px var(--red)' : level === 'warning' ? '0 0 8px #f5a623' : '0 0 8px var(--cyan)';
  }
}

// ── FACE TRACKING — reactor follows face position ─────────────────────
let _faceTargetX = 0, _faceTargetY = 0;  // normalized -0.5 to 0.5
let _faceCurrX   = 0, _faceCurrY   = 0;
let _faceVisible = false;
let _faceTrackRaf = null;
const FACE_MAX_X = 48;  // max px left/right travel
const FACE_MAX_Y = 10;  // max px up/down travel
const FACE_LERP  = 0.07; // smoothing (lower = slower/smoother)

function _faceTrackLoop() {
  _faceTrackRaf = requestAnimationFrame(_faceTrackLoop);

  // Lerp toward target (or back to 0 when no face)
  const targetX = _faceVisible ? _faceTargetX : 0;
  const targetY = _faceVisible ? _faceTargetY : 0;
  _faceCurrX += (targetX - _faceCurrX) * FACE_LERP;
  _faceCurrY += (targetY - _faceCurrY) * FACE_LERP;

  const tx = _faceCurrX * FACE_MAX_X;
  const ty = _faceCurrY * FACE_MAX_Y;

  const logo = document.querySelector('.tb-logo');
  if (logo) logo.style.transform = `translateX(${tx.toFixed(2)}px) translateY(${ty.toFixed(2)}px)`;
}

function updateFaceTarget(box, videoW, videoH) {
  // Face center, normalized — flip X because front camera is mirrored
  const cx = box.x + box.width  / 2;
  const cy = box.y + box.height / 2;
  _faceTargetX = 0.5 - (cx / videoW);   // flipped: move right when face is left
  _faceTargetY = (cy / videoH) - 0.5;   // positive = face low = logo drops slightly
  _faceVisible = true;

  // Position the scan overlay over the detected face in the viewport.
  // The video feed is 320×240 but hidden; map to viewport coords.
  const scaleX = window.innerWidth  / videoW;
  const scaleY = window.innerHeight / videoH;
  const faceVx = box.x * scaleX;
  const faceVy = box.y * scaleY;
  const faceVw = box.width  * scaleX;
  const faceVh = box.height * scaleY;
  const ov = document.getElementById('faceScanOverlay');
  if (ov) {
    ov.style.display = 'block';
    // Center overlay on face, flipped X to match mirror
    const ovX = window.innerWidth - faceVx - faceVw / 2 - 30;
    const ovY = faceVy + faceVh / 2 - 30;
    ov.style.left = Math.max(0, Math.min(window.innerWidth - 60, ovX)) + 'px';
    ov.style.top  = Math.max(0, Math.min(window.innerHeight - 80, ovY)) + 'px';
  }
}

function clearFaceTarget() {
  _faceVisible = false;
  const ov = document.getElementById('faceScanOverlay');
  if (ov) ov.style.display = 'none';
}

function startFaceTracking() {
  const logo = document.querySelector('.tb-logo');
  if (logo) logo.classList.add('face-tracking');
  if (!_faceTrackRaf) _faceTrackLoop();
}

function stopFaceTracking() {
  clearFaceTarget();
  const logo = document.querySelector('.tb-logo');
  if (logo) { logo.classList.remove('face-tracking'); logo.style.transform = ''; }
  // Let the loop coast to zero naturally rather than snapping — cancel after settling
  setTimeout(() => {
    if (!_faceVisible && _faceTrackRaf) {
      cancelAnimationFrame(_faceTrackRaf);
      _faceTrackRaf = null;
    }
  }, 1500);
}

// ── GLITCH EFFECT ─────────────────────────────────────────────────────
(function initGlitch() {
  function triggerGlitch() {
    const el = document.querySelector('.tb-logo-text');
    if (!el) return;
    el.classList.add('glitching');
    setTimeout(() => el.classList.remove('glitching'), 280);
    setTimeout(triggerGlitch, 35000 + Math.random() * 25000);
  }
  setTimeout(triggerGlitch, 20000);
})();

// ① HUD CORNER RINGS ──────────────────────────────────────────────────
(function initHudCorners() {
  const canvas = document.getElementById('hudCornersCanvas');
  if (!canvas) return;
  const ctx = canvas.getContext('2d');
  let W, H, t = 0;
  function resize() { W = canvas.width = window.innerWidth; H = canvas.height = window.innerHeight; }

  function drawCorner(cx, cy, a0, a1) {
    const R = 62, R2 = R + 16;
    // Edge lines
    ctx.strokeStyle = 'rgba(0,212,255,0.35)'; ctx.lineWidth = 1;
    const edgeLen = 28;
    // two short lines along the screen edges from the corner point
    const midA = (a0 + a1) / 2;
    const ax = Math.cos(a0), ay = Math.sin(a0);
    const bx = Math.cos(a1), by = Math.sin(a1);
    ctx.beginPath(); ctx.moveTo(cx + ax*(R+6), cy + ay*(R+6)); ctx.lineTo(cx + ax*(R+6+edgeLen), cy + ay*(R+6+edgeLen)); ctx.stroke();
    ctx.beginPath(); ctx.moveTo(cx + bx*(R+6), cy + by*(R+6)); ctx.lineTo(cx + bx*(R+6+edgeLen), cy + by*(R+6+edgeLen)); ctx.stroke();

    // Primary arc
    ctx.beginPath(); ctx.arc(cx, cy, R, a0, a1);
    ctx.strokeStyle = 'rgba(0,212,255,0.5)'; ctx.lineWidth = 1.2; ctx.stroke();
    // Outer arc
    ctx.beginPath(); ctx.arc(cx, cy, R2, a0 + 0.12, a1 - 0.12);
    ctx.strokeStyle = 'rgba(0,212,255,0.18)'; ctx.lineWidth = 0.6; ctx.stroke();

    // Tick marks
    const ticks = 14;
    for (let i = 0; i <= ticks; i++) {
      const a = a0 + (a1 - a0) * (i / ticks);
      const big = i % 7 === 0;
      const len = big ? 9 : (i % 2 === 0 ? 5 : 3);
      ctx.beginPath();
      ctx.moveTo(cx + Math.cos(a) * (R - 2), cy + Math.sin(a) * (R - 2));
      ctx.lineTo(cx + Math.cos(a) * (R - 2 - len), cy + Math.sin(a) * (R - 2 - len));
      ctx.strokeStyle = big ? 'rgba(0,212,255,0.8)' : 'rgba(0,212,255,0.3)';
      ctx.lineWidth = big ? 1 : 0.5; ctx.stroke();
    }

    // Animated scanning dot
    const dotA = a0 + ((a1 - a0) * ((t * 0.35) % 1));
    ctx.beginPath(); ctx.arc(cx + Math.cos(dotA) * R, cy + Math.sin(dotA) * R, 2.5, 0, Math.PI*2);
    ctx.fillStyle = 'rgba(0,212,255,1)';
    ctx.shadowColor = 'rgba(0,212,255,0.9)'; ctx.shadowBlur = 8; ctx.fill(); ctx.shadowBlur = 0;

    // Small numeric labels
    ctx.font = '7px Share Tech Mono,monospace'; ctx.fillStyle = 'rgba(0,212,255,0.55)';
    ctx.fillText(Math.round((Math.abs(a0) / (Math.PI*2)) * 360) + '°',
      cx + Math.cos(a0) * (R + 20), cy + Math.sin(a0) * (R + 20));
  }

  function draw() {
    ctx.clearRect(0, 0, W, H); t += 0.01;
    drawCorner(0,   0,   0,            Math.PI*0.5);
    drawCorner(W,   0,   Math.PI*0.5,  Math.PI);
    drawCorner(0,   H,   Math.PI*1.5,  Math.PI*2);
    drawCorner(W,   H,   Math.PI,      Math.PI*1.5);
    requestAnimationFrame(draw);
  }
  resize(); draw();
  window.addEventListener('resize', resize);
})();

// ② DATA STREAM COLUMNS ───────────────────────────────────────────────
(function initDataStream() {
  const canvas = document.getElementById('dataStreamCanvas');
  if (!canvas) return;
  const ctx = canvas.getContext('2d');
  let W, H;
  const CHARS = '0123456789ABCDEF◈◉▸▹⟩⟨⬡░▒';
  const COL_COUNT = 22;
  let cols = [];

  function resize() {
    W = canvas.width = window.innerWidth;
    H = canvas.height = window.innerHeight;
    cols = [];
    for (let i = 0; i < COL_COUNT; i++) {
      const x = (i / COL_COUNT) * W + Math.random() * (W / COL_COUNT) * 0.6;
      cols.push({ x, y: Math.random() * H, speed: Math.random() * 0.7 + 0.25,
        len: Math.floor(Math.random() * 14 + 5), chars: [],
        alpha: Math.random() * 0.035 + 0.015, tick: 0 });
    }
  }

  function draw() {
    ctx.clearRect(0, 0, W, H);
    ctx.font = '11px Share Tech Mono,monospace';
    for (const c of cols) {
      c.y += c.speed;
      if (c.y - c.len * 14 > H) { c.y = -c.len * 14; c.alpha = Math.random() * 0.035 + 0.015; }
      if (++c.tick > 7) { c.tick = 0; c.chars[0] = CHARS[Math.floor(Math.random() * CHARS.length)]; }
      for (let i = 0; i < c.len; i++) {
        if (!c.chars[i]) c.chars[i] = CHARS[Math.floor(Math.random() * CHARS.length)];
        const cy = c.y - i * 14;
        if (cy < -14 || cy > H + 14) continue;
        const a = c.alpha * (1 - i / c.len);
        ctx.fillStyle = i === 0 ? `rgba(180,240,255,${Math.min(a*4,0.15)})` : `rgba(0,185,225,${a})`;
        ctx.fillText(c.chars[i], c.x, cy);
      }
    }
    requestAnimationFrame(draw);
  }
  resize(); draw();
  window.addEventListener('resize', resize);
})();

// ③ NETWORK TOPOLOGY ──────────────────────────────────────────────────
let _topoNodes = [], _topoT = 0, _topoRunning = false;

function renderTopology(devices) {
  const canvas = document.getElementById('topoCanvas');
  if (!canvas) return;
  const W = canvas.parentElement?.clientWidth || 260;
  canvas.width = W; canvas.height = 118;

  _topoNodes = devices.slice(0, 18).map((d, i, arr) => {
    const angle = (i / arr.length) * Math.PI * 2 - Math.PI / 2;
    const rx = W * 0.36, ry = 36;
    return {
      x: W/2 + Math.cos(angle) * rx * (0.6 + (i%3)*0.18),
      y: 52  + Math.sin(angle) * ry * (0.65 + (i%2)*0.25),
      label: (d.name || d.ip || '?').split('.')[0].substring(0, 9),
      on: !!(d.alive || d.status === 'online'),
      agent: d.source === 'agent',
      phase: Math.random() * Math.PI * 2,
    };
  });

  if (!_topoRunning) { _topoRunning = true; _drawTopo(); }
}

function _drawTopo() {
  requestAnimationFrame(_drawTopo);
  const canvas = document.getElementById('topoCanvas');
  if (!canvas || !_topoNodes.length) return;
  const ctx = canvas.getContext('2d');
  const W = canvas.width, H = canvas.height;
  _topoT += 0.018;
  ctx.clearRect(0, 0, W, H);

  const floatY = n => Math.sin(_topoT * 0.9 + n.phase) * 2.5;

  // Connections
  for (let i = 0; i < _topoNodes.length; i++) {
    for (let j = i+1; j < _topoNodes.length; j++) {
      const a = _topoNodes[i], b = _topoNodes[j];
      if (!a.on || !b.on) continue;
      const ax = a.x, ay = a.y + floatY(a), bx = b.x, by = b.y + floatY(b);
      const dist = Math.hypot(bx-ax, by-ay);
      if (dist > W * 0.55) continue;
      const lg = ctx.createLinearGradient(ax, ay, bx, by);
      const col = a.agent ? '0,255,136' : '0,212,255';
      lg.addColorStop(0, `rgba(${col},0.25)`); lg.addColorStop(0.5, `rgba(${col},0.1)`); lg.addColorStop(1, `rgba(${col},0.25)`);
      ctx.beginPath(); ctx.moveTo(ax, ay); ctx.lineTo(bx, by);
      ctx.strokeStyle = lg; ctx.lineWidth = 0.8; ctx.stroke();
      // travelling pulse
      const p = (_topoT * 0.4 + a.phase) % 1;
      ctx.beginPath(); ctx.arc(ax+(bx-ax)*p, ay+(by-ay)*p, 1.8, 0, Math.PI*2);
      ctx.fillStyle = 'rgba(0,212,255,0.85)'; ctx.fill();
    }
  }

  // Bubble nodes
  for (const n of _topoNodes) {
    const pulse = 0.5 + Math.sin(_topoT * 1.4 + n.phase) * 0.3;
    const col = n.on ? (n.agent ? '0,255,136' : '0,212,255') : '255,50,80';
    const r = n.agent ? 10 : 7;
    const nx = n.x, ny = n.y + floatY(n);

    if (n.on) {
      // Ambient bloom
      const bloom = ctx.createRadialGradient(nx, ny, r*0.4, nx, ny, r*3);
      bloom.addColorStop(0, `rgba(${col},${(pulse*0.18).toFixed(3)})`);
      bloom.addColorStop(1, `rgba(${col},0)`);
      ctx.beginPath(); ctx.arc(nx, ny, r*3, 0, Math.PI*2); ctx.fillStyle = bloom; ctx.fill();
    }

    // Frosted glass fill
    const fg = ctx.createRadialGradient(nx, ny - r*0.3, 0, nx, ny, r);
    const fa = n.on ? 0.18 + pulse*0.1 : 0.07;
    fg.addColorStop(0, `rgba(${col},${(fa*1.8).toFixed(3)})`);
    fg.addColorStop(0.65, `rgba(${col},${fa.toFixed(3)})`);
    fg.addColorStop(1, `rgba(${col},${(fa*0.2).toFixed(3)})`);
    ctx.beginPath(); ctx.arc(nx, ny, r, 0, Math.PI*2); ctx.fillStyle = fg; ctx.fill();

    // Border
    ctx.beginPath(); ctx.arc(nx, ny, r, 0, Math.PI*2);
    ctx.strokeStyle = `rgba(${col},${n.on ? (0.5 + pulse*0.32).toFixed(3) : '0.2'})`;
    ctx.lineWidth = 1; ctx.stroke();

    // Label below bubble
    ctx.font = '6px Share Tech Mono,monospace';
    ctx.textAlign = 'center';
    ctx.fillStyle = n.on ? `rgba(${col},0.82)` : 'rgba(255,100,100,0.5)';
    ctx.fillText(n.label, nx, ny + r + 7);
    ctx.textAlign = 'left';
  }
}

// ④ EKG HEARTBEAT ────────────────────────────────────────────────────
(function initEKG() {
  const canvas = document.getElementById('ekgCanvas');
  if (!canvas) return;
  const ctx = canvas.getContext('2d');
  let W, H, data = [], phase = 0;

  function resize() {
    const wrap = document.getElementById('ekgWrap');
    W = canvas.width  = wrap ? Math.max(100, wrap.clientWidth) : 180;
    H = canvas.height = 22;
    data = new Array(W).fill(0);
  }

  function ekgVal(p) {
    const c = p % 1;
    if (c < 0.28) return 0;
    if (c < 0.38) return Math.sin((c-0.28)/0.10*Math.PI) * 0.22;     // P bump
    if (c < 0.43) return 0;                                            // PR flat
    if (c < 0.45) return -(c-0.43)/0.02 * 0.18;                      // Q dip
    if (c < 0.465){ const f=(c-0.45)/0.015; return f<0.5?f*2*0.95:(2-f*2)*0.95; } // R spike
    if (c < 0.49) return -(c-0.465)/0.025 * 0.22;                    // S dip
    if (c < 0.52) return -(0.22-(c-0.49)/0.03*0.22);                 // back to baseline
    if (c < 0.70) return Math.sin((c-0.52)/0.18*Math.PI) * 0.28;     // T wave
    return 0;
  }

  function draw() {
    phase += 0.0038;
    data.shift(); data.push(ekgVal(phase));
    ctx.clearRect(0, 0, W, H);
    // Glow layer
    ctx.beginPath();
    data.forEach((v,i) => { const y=H*0.5-v*H*0.44; i===0?ctx.moveTo(i,y):ctx.lineTo(i,y); });
    ctx.strokeStyle='rgba(0,220,100,0.2)'; ctx.lineWidth=4; ctx.stroke();
    // Line
    ctx.beginPath();
    data.forEach((v,i) => { const y=H*0.5-v*H*0.44; i===0?ctx.moveTo(i,y):ctx.lineTo(i,y); });
    ctx.strokeStyle='rgba(0,255,120,0.85)'; ctx.lineWidth=1.2; ctx.stroke();
    requestAnimationFrame(draw);
  }
  resize(); draw();
  window.addEventListener('resize', resize);
})();

// ⑤ AUDIO WAVEFORM RING ───────────────────────────────────────────────
(function initAudioRing() {
  const canvas = document.getElementById('audioRingCanvas');
  if (!canvas) return;
  const ctx = canvas.getContext('2d');
  const CX = 30, CY = 30, BARS = 28, INNER = 20;

  let t = 0;
  function draw() {
    t += 0.055;
    ctx.clearRect(0, 0, 60, 60);
    const listening = window.isListening;
    const speaking  = window.isSpeaking;
    if (!listening && !speaking) { requestAnimationFrame(draw); return; }

    for (let i = 0; i < BARS; i++) {
      const angle = (i / BARS) * Math.PI * 2;
      let amp;
      if (speaking) {
        amp = 0.35 + Math.abs(Math.sin(t*4.1+i*0.9))*0.5 + Math.abs(Math.sin(t*9+i*1.7))*0.15;
      } else {
        amp = 0.08 + Math.abs(Math.sin(t*1.1+i*0.6))*0.18;
      }
      const barLen = 3 + amp * 11;
      ctx.beginPath();
      ctx.moveTo(CX+Math.cos(angle)*INNER,       CY+Math.sin(angle)*INNER);
      ctx.lineTo(CX+Math.cos(angle)*(INNER+barLen), CY+Math.sin(angle)*(INNER+barLen));
      const alpha = speaking ? 0.55+amp*0.45 : 0.25+amp*0.35;
      ctx.strokeStyle = speaking ? `rgba(0,255,175,${alpha})` : `rgba(0,212,255,${alpha})`;
      ctx.lineWidth = 1.8; ctx.stroke();
    }
    requestAnimationFrame(draw);
  }
  draw();
})();

// ⑥ STATIC NOISE BURSTS ───────────────────────────────────────────────
(function initStaticBursts() {
  function burst() {
    const panels = document.querySelectorAll('#app .panel');
    if (panels.length) {
      const p = panels[Math.floor(Math.random() * panels.length)];
      const n = document.createElement('div');
      n.className = 'panel-noise-layer';
      p.appendChild(n);
      setTimeout(() => n.remove(), 320);
    }
    setTimeout(burst, 75000 + Math.random() * 55000);
  }
  setTimeout(burst, 40000 + Math.random() * 30000);
})();

// ⑦ AMBIENT COLOR CYCLE ───────────────────────────────────────────────
(function initAmbientColor() {
  let t = 0;
  const root = document.documentElement;
  function tick() {
    t += 0.00025;
    const g = Math.round(210 + Math.sin(t) * 22);
    const b = Math.round(248 + Math.cos(t * 1.15) * 28);
    root.style.setProperty('--cyan',  `rgb(0,${g},${b})`);
    root.style.setProperty('--cyan2', `rgb(0,${Math.round(g*.82)},${Math.round(b*.87)})`);
    requestAnimationFrame(tick);
  }
  tick();
})();