#ubest-whatsapp-chat {
    position: fixed;
    right: max(20px, env(safe-area-inset-right));
    bottom: calc(84px + env(safe-area-inset-bottom));
    z-index: 390;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, .5);
    border-radius: 50%;
    background: #128c4b;
    color: #fff;
    box-shadow: 0 3px 14px rgba(0, 0, 0, .18);
    text-decoration: none;
}
#ubest-whatsapp-chat:hover { background: #0b713b; }
#ubest-whatsapp-chat:focus-visible { outline: 3px solid #102a43; outline-offset: 4px; }
#ubest-whatsapp-chat img { width: 28px; height: 28px; display: block; filter: brightness(0) invert(1); }
#ubest-whatsapp-chat .ubest-whatsapp-tooltip {
    position: absolute;
    right: 66px;
    padding: 8px 12px;
    border-radius: 4px;
    background: #202522;
    color: #fff;
    font: 14px/1.4 sans-serif;
    letter-spacing: 0;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}
#ubest-whatsapp-chat:hover .ubest-whatsapp-tooltip,
#ubest-whatsapp-chat:focus-visible .ubest-whatsapp-tooltip { opacity: 1; visibility: visible; }
@media (max-width: 767px) {
    #ubest-whatsapp-chat {
        right: max(14px, env(safe-area-inset-right));
        bottom: calc(132px + env(safe-area-inset-bottom));
        width: 52px;
        height: 52px;
    }
}
@media (hover: none) {
    #ubest-whatsapp-chat .ubest-whatsapp-tooltip { display: none; }
}