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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #000;
  touch-action: none;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

#game-wrapper {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  background: #000;
  touch-action: none;
}

canvas {
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  image-rendering: auto;
  touch-action: none;
  -webkit-touch-callout: none;
}

/* UI overlay untuk login form */
#ui { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 50; }
#ui:empty { pointer-events: none; }
#controls-hint { display: none; }