/* Shared glass button surface (expand, play). */
.glass{position:relative;isolation:isolate;border:1px solid #ffffff99;background:#ffffff20;box-shadow:inset 0 1px 1px #fff,inset 0 -1px 1px #fff6,0 10px 25px #0002;backdrop-filter:blur(18px) saturate(145%);-webkit-backdrop-filter:blur(18px) saturate(145%)}

.glass:before{content:'';position:absolute;inset:0;border-radius:inherit;pointer-events:none;z-index:0;background:linear-gradient(128deg,#ffffff5e,transparent 16%,transparent 80%,#ffffff3b)}
@media(prefers-reduced-transparency:reduce){.glass{backdrop-filter:none;-webkit-backdrop-filter:none}}