.fbc-button {
    position: fixed;
    z-index: 9999;
    width: var(--fbc-button-size, 60px);
    height: var(--fbc-button-size, 60px);
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 24px rgba(0,0,0,.18);
    transition: box-shadow .2s ease, opacity .2s ease;
    text-decoration: none;
    overflow: hidden;
    box-sizing: border-box;
    line-height: 0;
    font-size: 0;
    -webkit-tap-highlight-color: transparent;
}

.fbc-button:hover,
.fbc-button:focus {
    box-shadow: 0 12px 28px rgba(0,0,0,.24);
    text-decoration: none;
}

.fbc-button,
.fbc-button:hover,
.fbc-button:focus,
.fbc-button:active {
    transform: none !important;
}

.fbc-button svg {
    width: var(--fbc-icon-size, 24px);
    height: var(--fbc-icon-size, 24px);
    display: block;
    flex: 0 0 auto;
}

.fbc-button .fbc-icon--easter {
    width: 100%;
    height: 100%;
    display: block;
    flex: 0 0 100%;
    overflow: visible;
}

.fbc-button--whatsapp {
    background: #25D366;
    color: #ffffff;
}

.fbc-button--calendar {
    background: #2563eb;
    color: #ffffff;
}

.fbc-button--custom {
    box-shadow: 0 10px 24px rgba(0,0,0,.18);
}

.fbc-button--custom:hover,
.fbc-button--custom:focus {
    box-shadow: 0 12px 28px rgba(0,0,0,.24);
}

.fbc-button--transparent {
    background: transparent !important;
    box-shadow: none !important;
    overflow: visible;
}

.fbc-button--transparent:hover,
.fbc-button--transparent:focus {
    box-shadow: none !important;
}

@media (max-width: 782px) {
    .fbc-button {
        width: var(--fbc-button-size-mobile, 54px);
        height: var(--fbc-button-size-mobile, 54px);
    }

    .fbc-button svg {
        width: var(--fbc-icon-size-mobile, 20px);
        height: var(--fbc-icon-size-mobile, 20px);
    }

    .fbc-button .fbc-icon--easter {
        width: 100%;
        height: 100%;
        display: block;
        flex: 0 0 100%;
    }
}