* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: #0b3d2e;
  color: #fff;
  min-height: 100vh;
}
.wrap { max-width: 480px; margin: 0 auto; padding: 24px 16px; }
.wrap.wide { max-width: 900px; }
h1 { font-size: 1.6rem; margin-bottom: 4px; }
.sub { opacity: 0.7; font-size: 0.9rem; margin-bottom: 24px; }
.btn {
  display: block; width: 100%; padding: 14px; margin: 8px 0;
  background: #ffb020; color: #1a1a1a; border: none; border-radius: 10px;
  font-size: 1rem; font-weight: 600; cursor: pointer;
}
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn.secondary { background: transparent; border: 2px solid #ffb020; color: #ffb020; }
.btn.small { width: auto; padding: 8px 14px; font-size: 0.85rem; display: inline-block; }
input[type=text], input[type=number] {
  width: 100%; padding: 12px; border-radius: 8px; border: none;
  font-size: 1rem; margin: 6px 0 14px;
}
.card-area { display: flex; gap: 8px; justify-content: center; margin: 16px 0; flex-wrap: wrap; }
.card {
  width: 52px; height: 74px; border-radius: 6px; background: #fff; color: #111;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  font-weight: 700; font-size: 1.1rem; box-shadow: 0 2px 4px rgba(0,0,0,0.4);
}
.card.red { color: #d31414; }
.card.black { color: #111; }
.card .suit { font-size: 1.3rem; line-height: 1; }
.card-back {
  background: repeating-linear-gradient(45deg, #234, #234 4px, #157 4px, #157 8px);
  border: 2px solid #fff2;
}
.panel { background: rgba(255,255,255,0.08); border-radius: 12px; padding: 16px; margin: 14px 0; }
.seat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px,1fr)); gap: 10px; }
.seat { background: rgba(0,0,0,0.3); border-radius: 10px; padding: 10px; text-align: center; }
.seat.turn { outline: 2px solid #ffb020; }
.seat.folded { opacity: 0.35; }
.seat .name { font-weight: 600; font-size: 0.9rem; }
.seat .stack { font-size: 0.8rem; opacity: 0.8; }
.qr-box { background: #fff; padding: 16px; border-radius: 12px; display: inline-block; margin: 12px 0; }
.pot { font-size: 1.4rem; font-weight: 700; text-align: center; margin: 10px 0; }
.action-row { display: flex; gap: 8px; }
.action-row .btn { flex: 1; }
.log { font-size: 0.8rem; opacity: 0.7; max-height: 100px; overflow-y: auto; }
.status { font-size: 0.85rem; opacity: 0.75; margin-bottom: 10px; }
.center { text-align: center; }
a.link { color: #ffb020; }