.popup button {
    appearance:none;
    -webkit-appearance:none;
    border:0;
    border-radius:0;
    background:transparent;
    color:inherit;
    font:inherit;
    padding:0;
}
.popup button:focus-visible,.popup a:focus-visible {
    outline:2px solid #ddd;
    outline-offset:3px;
}
.popup button:disabled {opacity:.45;cursor:wait}
.popup-controls button {
    min-width:44px;
    min-height:44px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
}
@media(max-width:768px) {
    .popup .popup-controls {bottom:max(12px,env(safe-area-inset-bottom))}
}