* { margin: 0; padding: 0; box-sizing: border-box; }
body { background: #0a0a0a; overflow: hidden; font-family: 'Courier New', monospace; user-select: none; -webkit-user-select: none; }
#game-container { position: relative; width: 100vw; height: 100vh; display: flex; justify-content: center; align-items: center; }
#game-canvas { image-rendering: pixelated; image-rendering: crisp-edges; display: block; background: #1a1a2e; }
#ui-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; pointer-events: none; }
#ui-overlay.active { pointer-events: auto; }