:root{color-scheme:dark}html,body{margin:0;height:100%;background:#000;overflow:hidden}canvas#c{position:fixed;inset:0;width:100vw;height:100vh;display:block;touch-action:none}.hud{position:fixed;top:8px;left:8px;z-index:10;max-width:calc(100vw - 16px);background:#000000b8;color:#e8e8e8;border-radius:8px;padding:8px 10px;font:12px/1.45 ui-monospace,SFMono-Regular,Menlo,monospace}.hud pre{margin:0 0 6px;white-space:pre-wrap;font:inherit}.hud-buttons{display:flex;flex-wrap:wrap;gap:4px}.hud-buttons button{font:inherit;color:#fff;background:#2a2a2a;border:1px solid #555;border-radius:4px;padding:4px 8px;min-height:32px;cursor:pointer}.hud-buttons button:hover{background:#3a3a3a}.err{position:fixed;bottom:8px;left:8px;right:8px;color:#ffb4a8;background:#3c0000d9;font:12px/1.4 ui-monospace,monospace;padding:8px;border-radius:6px;white-space:pre-wrap;z-index:20}