:root {
  --bg: #0f172a;
  --panel: #1e293b;
  --line: #334155;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --brand: #38bdf8;
  --ok: #22c55e;
  --warn: #f59e0b;
  --bad: #ef4444;
}
* { box-sizing: border-box; }
body {
  margin: 0; font-family: -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif;
  background: var(--bg); color: var(--text); padding: 20px;
}
.wrap { max-width: 880px; margin: 0 auto; }
h1 { font-size: 22px; margin: 0 0 4px; }
.sub { color: var(--muted); font-size: 13px; margin-bottom: 20px; }
.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: 12px;
  padding: 18px; margin-bottom: 18px;
}
label { display: block; font-size: 13px; color: var(--muted); margin: 12px 0 6px; }
input, textarea, select {
  width: 100%; padding: 10px 12px; border-radius: 8px; border: 1px solid var(--line);
  background: #0b1220; color: var(--text); font-size: 14px;
}
button {
  background: var(--brand); color: #06283d; border: none; border-radius: 8px;
  padding: 11px 16px; font-size: 14px; font-weight: 600; cursor: pointer; margin-top: 14px;
}
button.ghost { background: transparent; color: var(--brand); border: 1px solid var(--brand); }
button:active { transform: translateY(1px); }
.row { display: flex; gap: 12px; flex-wrap: wrap; }
.row > div { flex: 1; min-width: 160px; }
#qrList { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 14px; margin-top: 14px; }
.qr-item {
  background: #0b1220; border: 1px solid var(--line); border-radius: 10px; padding: 12px;
  text-align: center;
}
.qr-item canvas { background: #fff; border-radius: 8px; padding: 6px; max-width: 100%; }
.qr-item .meta { font-size: 12px; color: var(--muted); margin-top: 8px; word-break: break-all; }
.qr-item a { color: var(--brand); font-size: 12px; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 500; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; }
.badge.valid { background: rgba(34,197,94,.15); color: var(--ok); }
.badge.recalled { background: rgba(239,68,68,.15); color: var(--bad); }
.badge.redeemed { background: rgba(245,158,11,.15); color: var(--warn); }
button.primary { background: var(--ok); color: #06283d; }
.msg { font-size: 13px; margin-top: 10px; }
.msg.ok { color: var(--ok); }
.msg.err { color: var(--bad); }

/* ---- 扫码App ---- */
#appView { max-width: 520px; margin: 0 auto; }
#video { width: 100%; border-radius: 12px; background: #000; display: block; }
#canvas { display: none; }
.scan-box { position: relative; }
.overlay {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  pointer-events: none;
}
.reticle { width: 70%; height: 70%; border: 2px solid var(--brand); border-radius: 12px; box-shadow: 0 0 0 9999px rgba(0,0,0,.35); }
.result {
  margin-top: 16px; background: var(--panel); border: 1px solid var(--line);
  border-radius: 12px; padding: 16px;
}
.result h2 { margin: 0 0 10px; font-size: 18px; }
.kv { display: flex; justify-content: space-between; padding: 6px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
.kv span:first-child { color: var(--muted); }
.status-big { font-size: 20px; font-weight: 700; margin: 8px 0; }
.status-big.ok { color: var(--ok); }
.status-big.bad { color: var(--bad); }
.status-big.warn { color: var(--warn); }
.hint { color: var(--muted); font-size: 12px; margin-top: 8px; }