body {
  font-family: Arial, sans-serif;
  text-align: center;
  background-color: #222;
  color: #eee;
  margin: 0;
  padding: 1rem;
}

h1 {
  margin-bottom: 1rem;
}

#gameContainer {
  margin: 0 auto;
  width: 600px;
  height: 400px;
  background-color: #111;
  border: 2px solid #555;
  border-radius: 8px;
  position: relative;
  transition: box-shadow 0.5s ease;
}

canvas {
  display: block;
  background-color: #000;
  border-radius: 8px;
}

.preferences {
  margin-top: 1rem;
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  align-items: center;
  color: #eee;
}

label {
  font-weight: bold;
}

input[type="color"],
input[type="range"] {
  cursor: pointer;
  transition: box-shadow 0.3s ease, transform 0.3s ease;
  border-radius: 4px;
  border: 1px solid #555;
  padding: 2px;
}

input[type="color"]:focus,
input[type="range"]:focus {
  outline: none;
  box-shadow: 0 0 8px #66ccff;
  transform: scale(1.1);
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(102, 204, 255, 0.7);
  }
  70% {
    box-shadow: 0 0 10px 10px rgba(102, 204, 255, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(102, 204, 255, 0);
  }
}

.animate-pulse {
  animation: pulse 1s ease;
}

#gameContainer.animate-glow {
  box-shadow: 0 0 20px 5px #66ccff;
}