@media screen and (max-width:768px) and (orientation:landscape){body::before{content:"📱 Please rotate your phone to portrait view";display:flex;justify-content:center;align-items:center;position:fixed;inset:0;background:#fff;color:#000;font-size:1.3rem;font-weight:bold;z-index:9999;text-align:center;padding:20px}body>*{display:none}}@media screen and (min-width:769px) and (max-width:1024px) and (orientation:portrait){body::before{content:"📲 Please rotate your tablet to landscape view";display:flex;justify-content:center;align-items:center;position:fixed;inset:0;background:#fff;color:#000;font-size:1.3rem;font-weight:bold;z-index:9999;text-align:center;padding:20px}body>*{display:none}}