body {
  font-family: Arial, sans-serif;
  text-align: center;
  background-color: #f0f0f0;
}
h1 { margin-top: 20px; }
#turn { font-weight: bold; }
#board {
  display: grid;
  grid-template-columns: repeat(8, 60px);
  grid-template-rows: repeat(8, 60px);
  margin: 20px auto;
  border: 2px solid #333;
}
.cell {
  width: 60px;
  height: 60px;
}
.cell.black { background-color: #769656; }
.cell.white { background-color: #eeeed2; }
.cell.highlight { background-color: #a9d18e; }
.piece {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  margin: 5px auto;
}
.piece.red { background-color: red; }
.piece.black { background-color: black; }
.piece.king { border: 3px solid gold; }
#resetBtn {
  padding: 10px 20px;
  font-size: 16px;
  cursor: pointer;
}