html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #282c34;
  font-family: Arial, sans-serif;
}

canvas {
  display: flex;
  margin: auto;
  border: 3px solid #61dafb;
  border-radius: 15px;
}

#controls {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(255, 255, 255, 0.9);
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  font-size: 14px;
}

button {
  display: block;
  margin: 5px 0;
  padding: 10px 20px;
  border: none;
  border-radius: 5px;
  background-color: #61dafb;
  color: #282c34;
  font-size: 16px;
  cursor: pointer;
  transition: background-color 0.3s;
  width: 100%
}

button:hover {
  background-color: #21a1f1;
}

select {
  display: block;
  margin: 5px 0;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 5px;
  background-color: #fff;
  font-size: 16px;
  width: 100%;
}

input[type="range"] {
  display: block;
  margin: 5px 0;
  width: 100%;
  background-color: #61dafb;
  border-radius: 5px;
}

#shuffleSlider {
  width: calc(100% - 20px);
  margin: 10px 0;
}

#shuffleValue {
  display: inline-block;
  width: 40px;
  text-align: center;
}

#timeDisplay, #movesDisplay {
  margin: 10px 0;
  font-size: 16px;
  color: #333;
}

label {
  margin-right: 10px;
  font-weight: bold;
}

input[type="checkbox"] {
  margin-left: 5px;
}