/* The YouTube canvas can be extremely wide or short. Keep the portrait play
   field centered and allow intentional scrolling only when height is limited. */
.platform-youtube .app{width:min(100vw,900px);margin-inline:auto}
@media(max-height:620px){.platform-youtube .game,.platform-youtube .trace-screen,.platform-youtube .find-screen,.platform-youtube .memory-screen,.platform-youtube .pattern-screen,.platform-youtube .challenge-screen{overflow-y:auto;overscroll-behavior:contain}.platform-youtube .board-wrap{flex:none;min-height:340px;height:clamp(340px,75dvh,480px)}.platform-youtube .trace-panel,.platform-youtube .find-panel,.platform-youtube .memory-panel,.platform-youtube .pattern-panel,.platform-youtube .challenge-panel{flex:none;min-height:340px}.platform-youtube .intro{padding-top:48px}.platform-youtube .intro-art{height:86px}}
@media(min-aspect-ratio:16/9){.platform-youtube .app{max-width:min(100vw,calc(100dvh * 1.35));box-shadow:0 0 40px #629b9655}}
#platformBoot{position:fixed;inset:0;z-index:100;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;background:linear-gradient(#c8eff4,#e9f7df);color:#518b71;font:700 20px 'Baloo 2',system-ui,sans-serif;text-align:center;padding:20px}
#platformBoot img{width:clamp(95px,24vw,145px);height:clamp(95px,24vw,145px);border-radius:27px;box-shadow:0 12px 20px #5da78c55;animation:bootBob 2s ease-in-out infinite}
#platformBoot button{min-height:48px;padding:8px 24px;border:0;border-radius:16px;background:#78ce97;color:white;font:inherit}
@keyframes bootBob{50%{transform:translateY(-7px)}}