body {
  background: #000;
  color: #fff;
  font-family: sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 10px;
  margin: 0;
  overflow: hidden;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 15px;
  justify-content: center;
}

select, button {
  background: #111;
  color: #fff;
  border: 1px solid #333;
  padding: 10px 15px;
  border-radius: 5px;
  font-size: 14px;
}

canvas {
  border: 2px solid #222;
  max-width: 100%;
  height: auto;
  touch-action: none; 
}

.hint {
  color: #888;
  font-size: 11px;
  margin: 5px 0;
  text-align: center;
}