html,body,#root{height:100%}*,*:before,*:after{box-sizing:border-box}img,video,canvas{max-width:100%;height:auto}:root{--vh: 1vh;--app-height: 100vh}.chat-sticky-header{position:sticky;top:env(safe-area-inset-top,0px)}body{overflow-x:hidden}@media (max-width: 420px){.mobile-tight{padding-left:1rem!important;padding-right:1rem!important}}html[data-platform=ios] body{-webkit-overflow-scrolling:touch}.safe-top{padding-top:env(safe-area-inset-top)}.safe-bottom{padding-bottom:env(safe-area-inset-bottom)}.app-full-height{min-height:calc(var(--vh) * 100)}@media (max-width: 380px){.xs-tight{padding-left:1rem!important;padding-right:1rem!important}}.download-nudge{animation:downloadNudge 6s ease-in-out infinite}@keyframes downloadNudge{0%,70%,to{transform:translate(0);opacity:1}80%{transform:translate(6px)}90%{transform:translate(0)}}@media (prefers-reduced-motion: reduce){.download-nudge{animation:none}}