.rtype-shell{width:100%;min-height:100vh;margin:0;padding:0;background:#000;overflow:hidden;position:relative}.rtype-iframe-fill{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%}.rtype-frame{display:block;width:100%;min-height:100vh;height:100vh;border:0;background:#000}.rtype-shell.rtype-lobby,.rtype-shell.rtype-maker-host{position:relative;min-height:100%;height:auto;overflow:auto}.standalone-embedded .rtype-shell,.preview-frame-root .rtype-shell,.standalone-embedded .rtype-frame,.preview-frame-root .rtype-frame{min-height:100%;height:100%}.rtype-lobby{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1.25rem;padding:2.5rem 1.25rem;background:radial-gradient(ellipse at 50% -10%,rgba(40,180,255,.22),transparent 55%),radial-gradient(ellipse at 20% 80%,rgba(255,60,100,.12),transparent 45%),#050810;color:#eee;font-family:Segoe UI,system-ui,sans-serif}.rtype-lobby__title{margin:0;font-size:clamp(2.4rem,8vw,4rem);font-weight:900;letter-spacing:.18em;color:#7ec8ff;text-shadow:0 0 40px rgba(60,160,255,.45)}.rtype-lobby__sub{margin:0;max-width:36rem;text-align:center;color:#8a9bb0;line-height:1.45}.rtype-mode-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(14rem,1fr));gap:.85rem;width:min(40rem,100%)}.rtype-mode-card{display:flex;flex-direction:column;gap:.35rem;text-align:left;padding:1.1rem 1.2rem;border:1px solid color-mix(in srgb,#3aa0ff 35%,#203040);border-radius:.85rem;background:linear-gradient(135deg,rgba(40,140,255,.12),transparent 55%),#0a101cf0;color:inherit;cursor:pointer}.rtype-mode-card:hover{border-color:#3aa0ff}.rtype-mode-card__label{font-weight:700;color:#7ec8ff}.rtype-mode-card__desc{font-size:.9rem;color:#8a9bb0;line-height:1.4}.rtype-overlay-back{position:absolute;top:.75rem;left:.75rem;z-index:5;border:1px solid #555;background:#000000b3;color:#ccc;padding:.35rem .7rem;cursor:pointer;font-size:.8rem}