/* ==========================================================================
   Botón flotante de WhatsApp - Centro Especializado en Lenguas
   Usado en MasterPagePublica.master, visible en todas las páginas públicas.
   ========================================================================== */
.btn-whatsapp-flotante {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 56px;
    height: 56px;
    background: #25D366;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, .25);
    z-index: 500;
    transition: transform .2s ease, box-shadow .2s ease;
}

    .btn-whatsapp-flotante:hover,
    .btn-whatsapp-flotante:focus {
        color: #fff;
        transform: scale(1.08);
        box-shadow: 0 6px 16px rgba(0, 0, 0, .3);
        text-decoration: none;
    }

@media (max-width: 480px) {
    .btn-whatsapp-flotante {
        right: 16px;
        bottom: 16px;
        width: 50px;
        height: 50px;
        font-size: 26px;
    }
}