import { useState } from 'react'
import { useRiskDashboard, usePatternCorrelations, usePnlTimeline, useRiskExposure, useSimPortfolioRisk, usePortfolioScenarioExposure } from '../hooks/useApi'
import { ASSET_CLASS_COLORS } from '../constants/assetColors'
import clsx from 'clsx'
import { ShieldAlert, TrendingUp, GitBranch, AlertTriangle, CheckCircle, Activity, Brain, RefreshCw, PieChart, Layers } from 'lucide-react'

// ── Gauge component ──────────────────────────────────────────────────────────
function ConcentrationGauge({ label, pct, threshold = 50 }: { label: string; pct: number; threshold?: number }) {
  const color = pct > threshold ? 'bg-red-500' : pct > threshold * 0.7 ? 'bg-amber-500' : 'bg-emerald-500'
  const textColor = pct > threshold ? 'text-red-400' : pct > threshold * 0.7 ? 'text-amber-400' : 'text-emerald-400'
  return (
    <div>
      <div className="flex justify-between text-xs mb-1">
        <span className="text-slate-400 capitalize">{label}</span>
        <span className={clsx('font-mono font-bold', textColor)}>{pct.toFixed(1)}%</span>
      </div>
      <div className="h-2 bg-dark-700 rounded-full overflow-hidden">
        <div className={clsx('h-full rounded-full transition-all', color)} style={{ width: `${Math.min(pct, 100)}%` }} />
      </div>
      {pct > threshold && (
        <div className="text-[10px] text-red-400 mt-0.5">⚠ Saturated (&gt;{threshold}%)</div>
      )}
    </div>
  )
}

// ── Equity curve SVG ─────────────────────────────────────────────────────────
function EquityCurve({ timeline }: { timeline: any[] }) {
  if (!timeline || timeline.length < 2) {
    return (
      <div className="h-24 flex items-center justify-center text-slate-600 text-xs">
        No P&L data yet (requires mature trades)
      </div>
    )
  }

  const values = timeline.map(t => t.cumulative_pnl_abs ?? 0)
  const min = Math.min(...values)
  const max = Math.max(...values)
  const range = max - min || 1
  const W = 400
  const H = 80
  const pad = 4

  const points = values.map((v, i) => {
    const x = pad + (i / (values.length - 1)) * (W - pad * 2)
    const y = H - pad - ((v - min) / range) * (H - pad * 2)
    return `${x},${y}`
  }).join(' ')

  const finalVal = values[values.length - 1]
  const lineColor = finalVal >= 0 ? '#34d399' : '#f87171'

  return (
    <div>
      <svg viewBox={`0 0 ${W} ${H}`} className="w-full h-20">
        <defs>
          <linearGradient id="curve-grad" x1="0" y1="0" x2="0" y2="1">
            <stop offset="0%" stopColor={lineColor} stopOpacity="0.3" />
            <stop offset="100%" stopColor={lineColor} stopOpacity="0" />
          </linearGradient>
        </defs>
        {/* Zero line */}
        {min < 0 && max > 0 && (
          <line
            x1={pad} x2={W - pad}
            y1={H - pad - ((0 - min) / range) * (H - pad * 2)}
            y2={H - pad - ((0 - min) / range) * (H - pad * 2)}
            stroke="#475569" strokeWidth="0.5" strokeDasharray="3,3"
          />
        )}
        <polyline points={points} fill="none" stroke={lineColor} strokeWidth="1.5" />
      </svg>
      <div className="flex justify-between text-[10px] text-slate-600 mt-0.5">
        <span>{timeline[0]?.entry_date?.slice(0, 7)}</span>
        <span className={clsx('font-mono font-bold', finalVal >= 0 ? 'text-emerald-400' : 'text-red-400')}>
          {finalVal >= 0 ? '+' : ''}{finalVal.toFixed(0)}€
        </span>
        <span>{timeline[timeline.length - 1]?.entry_date?.slice(0, 7)}</span>
      </div>
    </div>
  )
}

// ── Correlation heatmap row ──────────────────────────────────────────────────
function CorrelationPairRow({ pair }: { pair: any }) {
  const c = pair.correlation
  const abs = Math.abs(c)
  const color = abs > 0.7 ? 'text-red-400' : abs > 0.4 ? 'text-amber-400' : 'text-emerald-400'
  const bg = abs > 0.7 ? 'bg-red-900/20 border-red-700/30' : abs > 0.4 ? 'bg-amber-900/20 border-amber-700/30' : 'bg-dark-700/30 border-slate-700/20'
  return (
    <div className={clsx('flex items-center gap-3 px-3 py-2 rounded border text-xs', bg)}>
      <div className="flex-1 min-w-0">
        <span className="text-slate-300 truncate">{pair.name_a}</span>
        <span className="text-slate-600 mx-1">↔</span>
        <span className="text-slate-300 truncate">{pair.name_b}</span>
      </div>
      <div className={clsx('font-mono font-bold shrink-0', color)}>
        {c > 0 ? '+' : ''}{c.toFixed(2)}
      </div>
      <div className="text-slate-600 text-[10px] shrink-0">{pair.interpretation}</div>
    </div>
  )
}

// ── Recommendation card ──────────────────────────────────────────────────────
function RecommendationCard({ rec }: { rec: any }) {
  if (!rec) return null
  const isOk = rec.level === 'ok'
  const isDanger = rec.level === 'danger'
  return (
    <div className={clsx('card', {
      'border-red-700/40 bg-red-900/10': isDanger,
      'border-amber-700/40 bg-amber-900/10': rec.level === 'warning',
      'border-emerald-700/40 bg-emerald-900/10': isOk,
    })}>
      <div className={clsx('flex items-center gap-2 mb-2 text-sm font-semibold', {
        'text-red-400': isDanger,
        'text-amber-400': rec.level === 'warning',
        'text-emerald-400': isOk,
      })}>
        {isOk ? <CheckCircle className="w-4 h-4" /> : <AlertTriangle className="w-4 h-4" />}
        Risk Committee Recommendation
      </div>
      <div className="space-y-1.5">
        {(rec.messages ?? []).map((msg: string, i: number) => (
          <p key={i} className="text-xs text-slate-300 leading-relaxed">{msg}</p>
        ))}
      </div>
    </div>
  )
}

// ── Scenario concentration ("same bet, different ticker") ───────────────────
function ScenarioExposureCard() {
  const { data, isLoading } = usePortfolioScenarioExposure()
  const exp: any = data

  if (isLoading) return <div className="card animate-pulse h-40 bg-dark-700" />
  if (!exp || !exp.positions) return null

  const concentration: any[] = exp.concentration ?? []
  const scenarios: any[] = exp.scenarios ?? []

  return (
    <div className="card">
      <div className="text-sm font-semibold text-white mb-1 flex items-center gap-2">
        <Layers className="w-4 h-4 text-purple-400" /> Concentration par scénario macro
      </div>
      <div className="text-[10px] text-slate-500 mb-3">
        Repricing Black-Scholes réel (pricing Saxo-first) de chaque position sous 5 scénarios —
        révèle quand plusieurs positions différentes sont en réalité le même pari répété.
      </div>

      {exp.warning && (
        <div className="mb-3 flex items-start gap-2 text-xs px-3 py-2 rounded border bg-amber-900/20 border-amber-700/30 text-amber-300">
          <AlertTriangle className="w-3.5 h-3.5 mt-0.5 shrink-0" />
          {exp.warning}
        </div>
      )}

      <div className="grid grid-cols-1 lg:grid-cols-2 gap-5">
        {/* Concentration bars */}
        <div>
          <div className="text-xs font-semibold text-slate-400 mb-2">
            % du book dont c'est le scénario le plus favorable
          </div>
          <div className="space-y-2.5">
            {concentration.map((c: any) => (
              <div key={c.key}>
                <div className="flex justify-between text-xs mb-1">
                  <span className="text-slate-300">{c.label}</span>
                  <span className={clsx('font-mono font-bold', c.pct_of_portfolio >= 60 ? 'text-amber-400' : 'text-slate-300')}>
                    {c.pct_of_portfolio}%
                  </span>
                </div>
                <div className="h-2 bg-dark-700 rounded-full overflow-hidden">
                  <div className="h-full rounded-full bg-purple-500/70" style={{ width: `${Math.min(c.pct_of_portfolio, 100)}%` }} />
                </div>
              </div>
            ))}
          </div>
        </div>

        {/* Sensitivity matrix */}
        <div>
          <div className="text-xs font-semibold text-slate-400 mb-2">P&L estimé du portefeuille par scénario</div>
          <table className="w-full text-xs">
            <tbody>
              {scenarios.map((s: any) => (
                <tr key={s.key} className="border-b border-slate-800/40">
                  <td className="py-1.5 pr-3 text-slate-300">{s.label}</td>
                  <td className={clsx('py-1.5 text-right font-mono font-bold whitespace-nowrap',
                    s.portfolio_pnl_pct >= 0 ? 'text-emerald-400' : 'text-red-400')}>
                    {s.portfolio_pnl_pct >= 0 ? '+' : ''}{s.portfolio_pnl_pct}%
                  </td>
                </tr>
              ))}
            </tbody>
          </table>
        </div>
      </div>

      {exp.unpriced?.length > 0 && (
        <div className="text-[10px] text-slate-600 mt-3 pt-2 border-t border-slate-700/30">
          {exp.unpriced.length} position(s) non pricée(s) (pas de legs/données) : {exp.unpriced.map((u: any) => u.title).join(', ')}
        </div>
      )}
    </div>
  )
}

// ── Main page ────────────────────────────────────────────────────────────────

function SimRiskPanel() {
  const { data, isLoading, refetch } = useSimPortfolioRisk()
  const risk = data as any

  if (isLoading) return (
    <div className="space-y-3">
      {[1, 2, 3].map(i => <div key={i} className="card animate-pulse h-20 bg-dark-700" />)}
    </div>
  )

  if (!risk || risk.open_count === 0) return (
    <div className="card text-center py-10 text-slate-500">
      <PieChart className="w-8 h-8 mx-auto mb-2 opacity-20" />
      <div className="text-sm">No open positions in the simulated portfolio</div>
      <div className="text-xs mt-1">Logged trades will appear here after the next AI cycle</div>
    </div>
  )

  const concentration: Record<string, any> = risk.concentration ?? {}
  const alerts: any[] = risk.alerts ?? []
  const conflicts: any[] = risk.conflicts ?? []
  const aiMonitor: any = risk.ai_monitor
  const aiTs: string = risk.ai_monitor_ts
  const dangers = alerts.filter((a: any) => a.level === 'danger')
  const warnings = alerts.filter((a: any) => a.level === 'warning')

  return (
    <div className="space-y-4">
      {/* KPIs */}
      <div className="grid grid-cols-2 sm:grid-cols-4 gap-3">
        <div className="card text-center">
          <div className="text-2xl font-bold text-white font-mono">{risk.open_count}</div>
          <div className="text-xs text-slate-500 mt-1">Simulated positions</div>
        </div>
        <div className="card text-center">
          <div className={clsx('text-2xl font-bold font-mono', dangers.length > 0 ? 'text-red-400' : 'text-emerald-400')}>
            {dangers.length}
          </div>
          <div className="text-xs text-slate-500 mt-1">Directional conflicts</div>
        </div>
        <div className="card text-center">
          <div className={clsx('text-2xl font-bold font-mono', warnings.length > 0 ? 'text-amber-400' : 'text-emerald-400')}>
            {warnings.length}
          </div>
          <div className="text-xs text-slate-500 mt-1">Concentration alerts</div>
        </div>
        <div className="card text-center">
          <div className="text-2xl font-bold font-mono text-slate-300">
            {Object.keys(concentration).filter(ac => ac !== 'unknown').length}
          </div>
          <div className="text-xs text-slate-500 mt-1">Asset classes</div>
        </div>
      </div>

      {/* Concentration + Conflicts side by side */}
      <div className="grid grid-cols-1 lg:grid-cols-2 gap-4">
        {/* Asset class bars */}
        <div className="card">
          <div className="text-sm font-semibold text-white mb-3 flex items-center justify-between">
            <span className="flex items-center gap-2">
              <GitBranch className="w-4 h-4 text-blue-400" /> Allocation by asset class
            </span>
            <button onClick={() => refetch()} className="text-slate-600 hover:text-slate-400">
              <RefreshCw className="w-3.5 h-3.5" />
            </button>
          </div>
          <div className="space-y-2.5">
            {Object.entries(concentration)
              .sort(([, a]: any, [, b]: any) => b.pct - a.pct)
              .map(([ac, data]: [string, any]) => {
                const color = ASSET_CLASS_COLORS[ac] ?? ASSET_CLASS_COLORS.unknown
                const exp = risk.direction_exposure?.[ac] ?? {}
                const isOver = data.pct >= 35
                return (
                  <div key={ac}>
                    <div className="flex items-center justify-between mb-1">
                      <div className="flex items-center gap-2">
                        <span className="text-xs font-semibold w-20 capitalize" style={{ color }}>{ac}</span>
                        <span className="text-[10px] text-slate-500 max-w-[120px] truncate">
                          {data.tickers?.slice(0, 3).join(', ')}{data.tickers?.length > 3 ? '…' : ''}
                        </span>
                      </div>
                      <div className="flex items-center gap-2 text-[10px]">
                        {exp.bullish > 0 && <span className="text-emerald-400">▲{exp.bullish}</span>}
                        {exp.bearish > 0 && <span className="text-red-400">▼{exp.bearish}</span>}
                        <span className={clsx('font-mono font-bold', isOver ? 'text-red-400' : 'text-slate-300')}>
                          {data.pct}%
                        </span>
                        <span className="text-slate-600">({data.count})</span>
                      </div>
                    </div>
                    <div className="h-2 bg-dark-700 rounded-full overflow-hidden">
                      <div className="h-full rounded-full"
                        style={{ width: `${data.pct}%`, background: isOver ? '#ef4444cc' : `${color}cc` }} />
                    </div>
                  </div>
                )
              })}
          </div>
        </div>

        {/* Conflicts & alerts */}
        <div className="space-y-3">
          {conflicts.length === 0 && warnings.length === 0 ? (
            <div className="card border-emerald-700/30 bg-emerald-900/10 flex items-center gap-3 py-4">
              <CheckCircle className="w-5 h-5 text-emerald-400 shrink-0" />
              <div className="text-xs text-emerald-300">Balanced portfolio — no conflicts or over-concentration detected</div>
            </div>
          ) : null}

          {conflicts.map((c: any, i: number) => (
            <div key={i} className="card border-red-700/40 bg-red-900/10">
              <div className="text-xs font-semibold text-red-300 mb-2 flex items-center gap-1">
                <ShieldAlert className="w-3.5 h-3.5" /> Directional conflict — {c.underlying}
              </div>
              <div className="space-y-1">
                {c.trades.map((t: any) => (
                  <div key={t.id} className="flex items-center gap-2 text-[11px]">
                    <span className={clsx('font-bold font-mono w-6',
                      t.direction === 'bullish' ? 'text-emerald-400' : 'text-red-400')}>
                      {t.direction === 'bullish' ? '▲' : '▼'}#{t.id}
                    </span>
                    <span className="text-slate-400">{t.strategy}</span>
                    <span className="text-slate-600">{t.entry_date}</span>
                    <span className="text-slate-600 truncate max-w-[140px]">{t.pattern_name}</span>
                  </div>
                ))}
              </div>
            </div>
          ))}

          {warnings.length > 0 && (
            <div className="card border-amber-700/30 bg-amber-900/10">
              <div className="text-xs font-semibold text-amber-300 mb-2 flex items-center gap-1">
                <AlertTriangle className="w-3.5 h-3.5" /> Concentration alerts
              </div>
              <div className="space-y-1">
                {warnings.map((a: any, i: number) => (
                  <div key={i} className="text-[11px] text-amber-200/80 flex items-start gap-1.5">
                    <span className="text-amber-500 shrink-0">•</span>{a.message}
                  </div>
                ))}
              </div>
            </div>
          )}
        </div>
      </div>

      {/* AI recommendations */}
      {aiMonitor && (
        <div className="card border-blue-700/30 bg-blue-900/10">
          <div className="flex items-center justify-between mb-2">
            <div className="text-xs font-semibold text-blue-300 flex items-center gap-1.5">
              <Brain className="w-3.5 h-3.5" /> AI Recommendations — Simulated portfolio monitor
            </div>
            {aiTs && <span className="text-[10px] text-slate-600">{aiTs.slice(0, 16).replace('T', ' ')}</span>}
          </div>
          {aiMonitor.assessment && <p className="text-xs text-slate-300 mb-2">{aiMonitor.assessment}</p>}
          {aiMonitor.actions?.length > 0 && (
            <div className="space-y-1 mb-2">
              {aiMonitor.actions.map((action: any, i: number) => (
                <div key={i} className={clsx(
                  'flex items-start gap-2 text-[11px] rounded px-2 py-1',
                  action.priority === 'high'
                    ? 'bg-red-900/20 border border-red-700/20 text-red-300'
                    : 'bg-slate-800/40 border border-slate-700/20 text-slate-300'
                )}>
                  <span className="shrink-0">
                    {action.type === 'close_trade' ? '🔒' : action.type === 'rebalance' ? '⚖️' : '👁'}
                  </span>
                  <div>
                    {action.underlying && <span className="font-mono font-bold mr-1">{action.underlying}</span>}
                    {action.trade_id && <span className="text-slate-500 mr-1">#{action.trade_id}</span>}
                    {action.reason}
                  </div>
                </div>
              ))}
            </div>
          )}
          {aiMonitor.rebalance_suggestion && (
            <div className="text-[11px] text-blue-300/70 border-t border-blue-700/20 pt-2">
              ⚖️ {aiMonitor.rebalance_suggestion}
            </div>
          )}
        </div>
      )}
    </div>
  )
}

export default function RiskDashboard() {
  const { data: dashboard, isLoading } = useRiskDashboard()
  const { data: corrData } = usePatternCorrelations()
  const [tlDays, setTlDays] = useState(90)
  const { data: tlData } = usePnlTimeline(tlDays)
  const [mode, setMode] = useState<'real' | 'sim'>('real')
  const { data: simRisk } = useSimPortfolioRisk()
  const simConflicts = (simRisk as any)?.alerts?.filter((a: any) => a.level === 'danger').length ?? 0

  const d: any = dashboard ?? {}
  const pairs: any[] = corrData?.pairs ?? []

  return (
    <div className="p-6 space-y-5">
      {/* Header */}
      <div className="flex items-center justify-between">
        <div>
          <h1 className="text-xl font-bold text-white flex items-center gap-2">
            <ShieldAlert className="w-5 h-5 text-red-400" /> Risk Dashboard
          </h1>
          <p className="text-xs text-slate-500 mt-0.5">
            {mode === 'real'
              ? 'Concentration · Clusters · Correlations · Position Sizing — IBKR Portfolio'
              : 'Directional conflicts · Concentration · AI Recommendations — Logged trades'}
          </p>
        </div>
        {/* Mode toggle */}
        <div className="flex gap-1 bg-dark-700 p-1 rounded">
          <button onClick={() => setMode('real')}
            className={clsx('px-3 py-1.5 rounded text-sm font-semibold transition-colors', {
              'bg-blue-600 text-white': mode === 'real',
              'text-slate-400 hover:text-slate-200': mode !== 'real',
            })}>
            Real Portfolio
          </button>
          <button onClick={() => setMode('sim')}
            className={clsx('flex items-center gap-1.5 px-3 py-1.5 rounded text-sm font-semibold transition-colors', {
              'bg-blue-600 text-white': mode === 'sim',
              'text-slate-400 hover:text-slate-200': mode !== 'sim',
            })}>
            Simulated (logged)
            {simConflicts > 0 && (
              <span className="text-[10px] font-bold bg-red-500 text-white rounded-full w-4 h-4 flex items-center justify-center">
                {simConflicts}
              </span>
            )}
          </button>
        </div>
      </div>

      {mode === 'sim' ? <SimRiskPanel /> : isLoading ? (
        <div className="grid grid-cols-4 gap-3">
          {[1, 2, 3, 4].map(i => <div key={i} className="card h-20 animate-pulse bg-dark-700" />)}
        </div>
      ) : (
        <>
          {/* KPI row */}
          <div className="grid grid-cols-2 gap-3 sm:grid-cols-4">
            <div className="card text-center">
              <div className="text-2xl font-bold text-white font-mono">{d.open_trades ?? 0}</div>
              <div className="text-xs text-slate-500 mt-1">Open positions</div>
            </div>
            <div className="card text-center">
              <div className={clsx('text-2xl font-bold font-mono',
                d.diversification_score >= 60 ? 'text-emerald-400'
                  : d.diversification_score >= 35 ? 'text-amber-400' : 'text-red-400'
              )}>{d.diversification_score ?? '—'}%</div>
              <div className="text-xs text-slate-500 mt-1">Diversification score</div>
              <div className="text-[10px] text-slate-600">N effectif = {d.effective_n_positions ?? '—'}</div>
            </div>
            <div className="card text-center">
              <div className={clsx('text-2xl font-bold font-mono',
                (d.expected_drawdown_pct ?? 0) < 15 ? 'text-emerald-400'
                  : (d.expected_drawdown_pct ?? 0) < 25 ? 'text-amber-400' : 'text-red-400'
              )}>{d.expected_drawdown_pct ?? '—'}%</div>
              <div className="text-xs text-slate-500 mt-1">Expected drawdown</div>
            </div>
            <div className="card text-center">
              <div className={clsx('text-2xl font-bold font-mono',
                !d.saturated_factors?.length ? 'text-emerald-400' : 'text-red-400'
              )}>
                {d.saturated_factors?.length ?? 0}
              </div>
              <div className="text-xs text-slate-500 mt-1">Saturated factors</div>
              {d.saturated_factors?.length > 0 && (
                <div className="text-[10px] text-red-400">{d.saturated_factors.join(', ')}</div>
              )}
            </div>
          </div>

          {/* Recommendation */}
          <RecommendationCard rec={d.recommendation} />

          {/* Scenario concentration — same bet, different ticker */}
          <ScenarioExposureCard />

          {/* Alerts */}
          {(d.concentration_alerts ?? []).length > 0 && (
            <div className="space-y-2">
              {d.concentration_alerts.map((alert: any, i: number) => (
                <div key={i} className={clsx('flex items-start gap-2 text-xs px-3 py-2 rounded border', {
                  'bg-red-900/20 border-red-700/30 text-red-300': alert.level === 'high',
                  'bg-amber-900/20 border-amber-700/30 text-amber-300': alert.level === 'warning',
                })}>
                  <AlertTriangle className="w-3 h-3 mt-0.5 shrink-0" />
                  {alert.message}
                </div>
              ))}
            </div>
          )}

          <div className="grid grid-cols-1 gap-5 lg:grid-cols-2">
            {/* Exposure by class */}
            <div className="card">
              <div className="text-sm font-semibold text-white mb-3 flex items-center gap-2">
                <GitBranch className="w-4 h-4 text-blue-400" /> Exposure by asset class
              </div>
              {Object.keys(d.exposure_by_class ?? {}).length === 0 ? (
                <div className="text-xs text-slate-600 text-center py-4">No open positions</div>
              ) : (
                <div className="space-y-3">
                  {Object.entries(d.exposure_by_class ?? {})
                    .sort(([, a]: any, [, b]: any) => b.pct_of_portfolio - a.pct_of_portfolio)
                    .map(([cls, info]: any) => (
                      <ConcentrationGauge key={cls} label={cls} pct={info.pct_of_portfolio} threshold={40} />
                    ))}
                </div>
              )}
            </div>

            {/* Risk factors */}
            <div className="card">
              <div className="text-sm font-semibold text-white mb-3 flex items-center gap-2">
                <Activity className="w-4 h-4 text-orange-400" /> Exposure by risk factor
              </div>
              {(d.risk_clusters ?? []).length === 0 ? (
                <div className="text-xs text-slate-600 text-center py-4">No open positions</div>
              ) : (
                <div className="space-y-3">
                  {(d.risk_clusters ?? []).map((c: any) => (
                    <ConcentrationGauge key={c.factor} label={c.factor} pct={c.pct_of_portfolio} threshold={50} />
                  ))}
                </div>
              )}
            </div>
          </div>

          {/* Equity curve */}
          <div className="card">
            <div className="flex items-center justify-between mb-3">
              <div className="text-sm font-semibold text-white flex items-center gap-2">
                <TrendingUp className="w-4 h-4 text-blue-400" /> Cumulative P&L curve (mature trades)
              </div>
              <select value={tlDays} onChange={e => setTlDays(Number(e.target.value))}
                className="bg-dark-700 border border-slate-700 rounded px-2 py-0.5 text-xs text-slate-300">
                <option value={30}>30d</option>
                <option value={90}>90d</option>
                <option value={180}>180d</option>
                <option value={365}>1 yr</option>
              </select>
            </div>
            <EquityCurve timeline={tlData?.timeline ?? []} />
          </div>

          {/* Correlation pairs */}
          <div className="card">
            <div className="text-sm font-semibold text-white mb-3">
              Pattern correlations (historical P&L)
            </div>
            {pairs.length === 0 ? (
              <div className="text-xs text-slate-600 text-center py-4">
                Requires ≥3 mature trades per pattern to calculate correlations
              </div>
            ) : (
              <div className="space-y-1.5">
                {pairs.slice(0, 10).map((pair: any, i: number) => (
                  <CorrelationPairRow key={i} pair={pair} />
                ))}
                {pairs.length > 10 && (
                  <div className="text-xs text-slate-600 text-center pt-1">{pairs.length - 10} more pairs…</div>
                )}
              </div>
            )}
            {pairs.length > 0 && (
              <div className="text-[10px] text-slate-600 mt-2">
                Correlation &gt; 0.7 = concentrated risk — these patterns share the same underlying factor
              </div>
            )}
          </div>
        </>
      )}
    </div>
  )
}
