.whatsapp-support-button {
    position: fixed;
    left: 24px;
    bottom: calc(24px + env(safe-area-inset-bottom, 0px));
    z-index: 1080;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1.1rem;
    border-radius: 999px;
    background: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
    color: #fff;
    box-shadow: 0 14px 32px rgba(18, 140, 126, 0.28);
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
}

.whatsapp-support-button:hover,
.whatsapp-support-button:focus {
    color: #fff;
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: 0 18px 36px rgba(18, 140, 126, 0.34);
    filter: brightness(1.02);
}

.whatsapp-support-button:focus-visible {
    outline: 3px solid rgba(37, 211, 102, 0.28);
    outline-offset: 3px;
}

.whatsapp-support-button__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.8rem;
    height: 1.8rem;
    font-size: 1.6rem;
    line-height: 1;
}

.whatsapp-support-button__label {
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    line-height: 1;
}

@media (max-width: 575.98px) {
    .whatsapp-support-button {
        left: 16px;
        bottom: calc(16px + env(safe-area-inset-bottom, 0px));
        justify-content: center;
        width: 58px;
        height: 58px;
        padding: 0;
        border-radius: 50%;
    }

    .whatsapp-support-button__label {
        display: none;
    }
}