:root{color-scheme:dark;background:#000;font-family:sans-serif}html,body{width:100%;height:100%;margin:0;overflow:hidden;overscroll-behavior:none}body{background:#000}#game-shell{position:fixed;top:0;right:0;bottom:0;left:0;width:100%;height:100dvh;box-sizing:border-box;padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);display:flex;align-items:center;justify-content:center;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}#canvas{display:block;max-width:100%;max-height:100%;border:0;outline:0;touch-action:none}.overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;gap:.75rem;align-items:center;justify-content:center;padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);background:#000;color:#fff}.overlay[hidden]{display:none}.spinner{width:1.25rem;height:1.25rem;border:.2rem solid #555;border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}@media(prefers-reduced-motion:reduce){.spinner{animation:none}}@keyframes spin{to{transform:rotate(1turn)}}