.whatsapp-fab {
    display: flex;
    align-items: center;
    justify-content: center;
    position: fixed;
    right: 20px;
    bottom: 20px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--color-whatsapp);
    color: var(--color-white);
    box-shadow: var(--shadow-card-hover);
    font-size: 28px;
    transition: var(--transition-base);
    z-index: var(--z-fab);
}

.whatsapp-fab:hover {
    transform: scale(1.08);
}