.whatsapp-float {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 55px;
    height: 55px;
    background: linear-gradient(135deg, #25D366, #128C7E);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    text-decoration: none;
    box-shadow: 0 10px 30px rgba(37, 211, 102, 0.4);
    transition: all var(--transition-normal) var(--ease-smooth);
    z-index: 998;
    animation: float-btn 3s ease-in-out infinite 1.5s;
}

.whatsapp-float:hover {
    transform: translateY(-5px) scale(1.08);
    box-shadow: 0 15px 40px rgba(37, 211, 102, 0.55);
    color: white;
}

.whatsapp-tooltip {
    position: absolute;
    right: 65px;
    background: var(--dark);
    color: white;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transform: translateX(8px);
    transition: all var(--transition-normal) var(--ease-smooth);
}

.whatsapp-tooltip::after {
    content: '';
    position: absolute;
    top: 50%;
    right: -6px;
    transform: translateY(-50%);
    border: 6px solid transparent;
    border-left-color: var(--dark);
    border-right: 0;
}

.whatsapp-float:hover .whatsapp-tooltip {
    opacity: 1;
    transform: translateX(0);
}

@media (max-width: 576px) {
    .whatsapp-float {
        width: 50px;
        height: 50px;
        bottom: 85px;
        right: 20px;
        font-size: 1.4rem;
    }
}