.whatsapp-support {
    position: fixed;
    right: 1.25rem;
    bottom: 1.25rem;
    z-index: 9990;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 9999px;
    background: #25d366;
    color: #fff;
    text-decoration: none;
    box-shadow:
        0 4px 14px rgba(0, 0, 0, 0.22),
        0 2px 6px rgba(37, 211, 102, 0.35);
    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease,
        background-color 0.2s ease;
}

.whatsapp-support:hover {
    background: #20bd5a;
    color: #fff;
    transform: translateY(-2px) scale(1.04);
    box-shadow:
        0 8px 22px rgba(0, 0, 0, 0.28),
        0 4px 12px rgba(37, 211, 102, 0.45);
}

.whatsapp-support:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 3px;
}

.whatsapp-support__icon {
    width: 1.75rem;
    height: 1.75rem;
}

/* Portal interno: acima do controle de volume (canto inferior direito) */
.whatsapp-support--raised {
    bottom: calc(1.25rem + 100px);
}

@media (max-width: 480px) {
    .whatsapp-support {
        right: 1rem;
        bottom: 1rem;
        width: 3.25rem;
        height: 3.25rem;
    }

    .whatsapp-support--raised {
        bottom: calc(1rem + 100px);
    }

    .whatsapp-support__icon {
        width: 1.6rem;
        height: 1.6rem;
    }
}