.whatsapp-float {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    background-color: var(--whatsapp);
    color: var(--whatsapp-dark);
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: var(--shadow-md);
    z-index: var(--z-whatsapp);
    transition: transform var(--transition);
}

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