body{
  background: #0b1020;
  color: #e8eefc;
  font-family: Arial, Helvetica, sans-serif;
  display: grid;
  place-items: center;
  gap: 12px;
  padding: 20px;
}

.hud{
  display: flex;
  gap: 10px;
  align-items: center;
}

.hud span{
  font-weight: 700;
}


button{
  padding: 6px 10px;
  cursor: pointer;
}

.board{
  width: 360px;
  height: 360px;
  background: #141d3a;
  border-radius: 12px;
  padding: 10px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.cell{
  background: rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-size: 24px;
  font-weight: 800;
}

#msg{
  margin-top: 12px;
  min-height: 24px;
  color: #e8eefc;
  font-size: 14px;
}