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

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  overscroll-behavior: none;
  background: #050814;
}

body {
  position: fixed;
  inset: 0;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: env(safe-area-inset-top, 0px) env(safe-area-inset-right, 0px)
    env(safe-area-inset-bottom, 0px) env(safe-area-inset-left, 0px);
  color: #fff;
  font-family: Tahoma, Arial, sans-serif;
  -webkit-user-select: none;
  user-select: none;
}

#game-container {
  width: min(
    calc(100vw - env(safe-area-inset-left, 0px) - env(safe-area-inset-right, 0px)),
    calc((100dvh - env(safe-area-inset-top, 0px) - env(safe-area-inset-bottom, 0px)) * 4 / 3),
    800px
  );
  aspect-ratio: 4 / 3;
  max-height: calc(100dvh - env(safe-area-inset-top, 0px) - env(safe-area-inset-bottom, 0px));
  touch-action: none;
  overscroll-behavior: contain;
}

#game-container canvas {
  display: block;
  margin: auto;
  touch-action: none;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

#orientation-hint {
  display: none;
  position: fixed;
  inset-inline: env(safe-area-inset-right, 0px) env(safe-area-inset-left, 0px);
  bottom: max(10px, env(safe-area-inset-bottom, 0px));
  z-index: 2;
  color: #c8d1e8;
  font-size: clamp(12px, 3.4vw, 16px);
  line-height: 1.35;
  text-align: center;
  pointer-events: none;
}

@media (orientation: portrait) {
  #orientation-hint { display: block; }
}