.snd-btn{position:absolute;left:auto;top:auto;z-index:4;width:40px;height:40px;padding:0;margin:0;border:0;border-radius:50%;
  display:grid;place-items:center;cursor:pointer;color:#050505;background:rgba(255,255,255,.85);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  box-shadow:0 1px 2px rgba(5,5,5,.10),0 4px 14px rgba(5,5,5,.10);
  transition:background-color .2s ease,transform .2s ease,box-shadow .2s ease;-webkit-tap-highlight-color:transparent}
.snd-btn:hover{background:rgba(255,255,255,.95);box-shadow:0 1px 2px rgba(5,5,5,.12),0 6px 18px rgba(5,5,5,.14)}
.snd-btn:active{transform:scale(.94)}
.snd-btn:focus{outline:none}
.snd-btn:focus-visible{outline:2px solid #015737;outline-offset:2px}
.snd-btn[hidden]{display:none}
.snd-btn svg{display:block}
@media (prefers-reduced-motion:reduce){.snd-btn{transition:none}}