/* WhatsApp Button */
.whatsapp-button {
    position: fixed;
    bottom: 20px;
    left: 20px;
    z-index: 9999;
}

.whatsapp-button a {
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #25d366;
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    font-size: 30px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease-in-out;
}

.whatsapp-button a:hover {
    transform: scale(1.1);
}

.whatsapp-button a i {
    animation: whatsapp-glow 1.5s infinite alternate;
}

@keyframes whatsapp-glow {
    from { text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #25d366; }
    to { text-shadow: 0 0 20px #25d366, 0 0 30px #25d366, 0 0 40px #25d366; }
}