web/src/ui/case-brief.tsx

// First-visit case brief: a one-card overlay on the board that tells a new player
// everything they need — who's dead/wronged, and what to do about it. Shown once per
// case per browser; the full dossier stays one tap away.
import { useState } from 'preact/hooks'

import { useGame } from '../store'
import { hasSeen, markSeen } from '../tips'
import { Btn, Chip, Panel } from './components'

export function CaseBriefOverlay() {
  const g = useGame()
  const c = g.case
  const key = `brief:${c.id}`
  const [show, setShow] = useState(() => !hasSeen(key))
  if (!show) return null
  const done = () => {
    markSeen(key)
    setShow(false)
    window.dispatchEvent(new Event('cz-brief-done'))
  }
  return (
    <div class="brief-veil" onClick={done}>
      <Panel variant="amber" className="brief-card col" style={{ gap: 12, padding: 18 }} onClick={(e: MouseEvent) => e.stopPropagation()}>
        <div class="row between" style={{ alignItems: 'center', gap: 8 }}>
          <span class="t-label" style={{ color: 'var(--amber-2)', letterSpacing: '.2em' }}>CASE {c.id}</span>
          <Chip variant="ox">{c.kindLabel || 'HOMICIDE'}</Chip>
        </div>
        <div class="col" style={{ gap: 4 }}>
          <span class="t-display" style={{ fontSize: 16, color: 'var(--bone-3)' }}>{c.victim.name}</span>
          <span class="t-label">{c.victimStatus || 'DECEASED'} · {c.scene}</span>
        </div>
        <p class="t-body" style={{ fontSize: 14, lineHeight: 1.5, color: 'var(--bone-2)', margin: 0 }}>
          One of them is lying. Question the suspects, present evidence, and make the accusation.
        </p>
        <div class="col" style={{ gap: 8 }}>
          <Btn variant="amber" onClick={done}>▸ Start investigating</Btn>
          <Btn variant="ghost" sm onClick={() => { markSeen(key); setShow(false); g.nav('briefing') }}>Read full case file ▸</Btn>
        </div>
      </Panel>
    </div>
  )
}