:root{--bg-color:#0f172a;--text-color:#f8fafc}*{box-sizing:border-box;touch-action:none;-webkit-touch-callout:none;-webkit-user-select:none;user-select:none;margin:0;padding:0}body,html{background-color:var(--bg-color);width:100%;height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;overflow:hidden}#game-container{justify-content:center;align-items:center;width:100%;height:100%;display:flex}canvas{max-width:100%;max-height:100%;display:block}