@keyframes whatsapp-bounce {
    0%, 100% {
        transform: translateY(0) scale(1);
    }
    50% {
        transform: translateY(-12px) scale(1.04);
    }
}

@keyframes whatsapp-pulse {
    0%, 100% {
        box-shadow: 0 4px 20px rgba(37,211,102,0.4);
    }
    50% {
        box-shadow: 0 8px 32px rgba(37,211,102,0.8);
    }
}

.whatsapp-btn {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 998;
    width: 80px;
    height: 80px;
    background: #25d366;
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(37,211,102,0.4);
    transition: transform 0.3s ease;
    animation: whatsapp-bounce 1.4s ease-in-out infinite, whatsapp-pulse 2.2s ease-in-out infinite;
}

.whatsapp-btn i {
    font-size: 2.5rem;
}

.whatsapp-btn:hover {
    animation: whatsapp-bounce 0.5s ease-in-out infinite, whatsapp-pulse 2.2s ease-in-out infinite;
    box-shadow: 0 8px 32px rgba(37,211,102,0.8);
}