.chessboard {
  border: 6px solid #4a3620;
}

.chesspiece {
  font-size: min(9vw, 46px);
  line-height: 1;
  user-select: none;
  cursor: pointer;
  transition: transform 0.1s ease;
}

.chesspiece.white {
  color: #fefefe;
  text-shadow: 0 0 2px #000, 0 0 4px rgba(0,0,0,0.6), 0 2px 1px rgba(0,0,0,0.5);
}

.chesspiece.black {
  color: #1a1425;
  text-shadow: 0 1px 1px rgba(255,255,255,0.35);
}

.cell.selected-sq { box-shadow: inset 0 0 0 4px var(--gold); }

.cell.in-check { background: #ff6b6b !important; }

.winbanner { margin-top: 0.6rem; }