/* Reset & base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background: #000;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  touch-action: none;          /* prevent scroll/zoom on mobile */
  -webkit-user-select: none;
  user-select: none;
}

#gameCanvas {
  display: block;
  /* Canvas scales via JS to fill the window while keeping aspect ratio */
  image-rendering: pixelated;
}