/* BOTÃO WHATSAPP FLUTUANTE GLOBAL */
.whatsapp-fixed {
    position: fixed;
    width: 60px;
    height: 60px;
    bottom: 30px;
    right: 30px;
    background-color: #25d366;
    color: #FFF !important;
    border-radius: 50%;
    text-align: center;
    font-size: 30px;
    box-shadow: 2px 2px 10px rgba(0,0,0,0.3);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.3s ease;
}

.whatsapp-fixed:hover {
    background-color: #128c7e;
    transform: scale(1.1);
}

/* Ajuste para ecrãs pequenos */
@media (max-width: 768px) {
    .whatsapp-fixed {
        width: 50px;
        height: 50px;
        bottom: 20px;
        right: 20px;
        font-size: 25px;
    }
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.whatsapp-fixed {
    /* ... o código que já tinhas ... */
    animation: fadeIn 0.8s ease-out;
}