body {
  margin: 0;
  padding: 0;
  font-family: Arial, Helvetica, sans-serif;
  /* Prevent pull-to-refresh on mobile */
  overscroll-behavior: none;
  /* Prevent text selection on mobile */
  -webkit-user-select: none;
  user-select: none;
  /* Prevent double-tap zoom */
  touch-action: manipulation;
}

#app {
  width: 100%;
  height: 100vh;
  /* Use dvh for better mobile support (dynamic viewport height) */
  height: 100dvh;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

#game-container {
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

#game-container canvas {
  display: block;
  margin: 0;
}