/* Fullscreen canvas styling for the web toy */
html,body{ height:100%; margin:0; }
main.wrap.simple{ padding:0; }
#canvas-container{ position:fixed; inset:0; display:flex; align-items:center; justify-content:center; }
#ball-canvas{ width:100%; height:100%; display:block; background:linear-gradient(180deg,#0f172a,#021024); border:0; box-shadow:none; }
.instruction{ display:none; }

/* ensure back-link and share buttons remain visible above canvas */
.back-link, .share-toggle, .share-menu { position:relative; z-index:9999; }