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

body {
  background-color: #1a1a2e;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  overflow: hidden;
}

#gameCanvas {
  max-width: 100vw;
  max-height: 100vh;
  border: 2px solid #333;
  border-radius: 4px;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}