.whatsapp-button {
    position: fixed;
    left: 25px;
    bottom: 25px;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 18px;
    background: #25D366;
    color: #fff;
    border-radius: 30px;
    text-decoration: none;
    font-family: Arial, sans-serif;
    font-size: 15px;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(0,0,0,.20);
    z-index: 99999;
    transition: all .2s ease;
}

    .whatsapp-button:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 18px rgba(0,0,0,.25);
    }

.whatsapp-icon {
    width: 25px;
    height: 25px;
    display: flex;
    align-items: center;
    justify-content: center;
}

    .whatsapp-icon svg {
        width: 25px;
        height: 25px;
        fill: #fff;
    }

.whatsapp-text {
    white-space: nowrap;
}

@media (max-width: 600px) {
    .whatsapp-button {
        left: 15px;
        bottom: 15px;
        width: 52px;
        height: 52px;
        padding: 0;
        justify-content: center;
        border-radius: 50%;
    }

    .whatsapp-text {
        display: none;
    }

    .whatsapp-icon, .whatsapp-icon svg {
        width: 28px;
        height: 28px;
    }
}