* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: #1a202c;
  color: white;
  font-family: sans-serif;
  text-align: center;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.game-wrapper {
  width: 100%;
  max-width: 400px;
  padding: 10px;
}

canvas {
  background-color: #000;
  border: 2px solid #3b82f6;
  border-radius: 10px;
  display: block;
  margin: 20px auto;
}

.controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.row {
  display: flex;
  gap: 10px;
}

.btn {
  width: 60px;
  height: 60px;
  font-size: 24px;
  border: none;
  border-radius: 50%;
  background-color: #3b82f6;
  color: white;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.btn:hover {
  background-color: #2563eb;
}

footer {
  margin-top: 20px;
  font-size: 0.9rem;
  color: #9ca3af;
}