.whatsapp-float {
    position: fixed;
    right: 18px;
    bottom: 18px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: #25D366;
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 24px rgba(0, 0, 0, .18), 0 4px 12px rgba(0, 0, 0, .12);
    cursor: pointer;
    z-index: 9999;
    text-decoration: none;
    transition: transform .15s ease, box-shadow .15s ease, filter .2s ease;
}


.whatsapp-float:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(0, 0, 0, .20), 0 6px 16px rgba(0, 0, 0, .14);
    filter: brightness(1.05);
}

.whatsapp-float::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 50%;
    animation: pulse 2.2s ease-in-out infinite;
    pointer-events: none;
    border: 2px solid rgba(37, 211, 102, 0.35);
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: .7;
    }

    70% {
        transform: scale(1.25);
        opacity: 0;
    }

    100% {
        transform: scale(1.25);
        opacity: 0;
    }
}

.whatsapp-icon {
    width: 28px;
    height: 28px;
    display: block;
}

@media (max-width: 380px) {
    .whatsapp-float {
        width: 52px;
        height: 52px;
        right: 14px;
        bottom: 14px;
    }

    .whatsapp-icon {
        width: 26px;
        height: 26px;
    }
}