#whatsapp-button {
    position: fixed;
    bottom: 20px;
    left: 20px;
    width: 70px;
    height: 70px;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(37, 211, 102, 0.25);
    /* green tint with transparency */
    backdrop-filter: blur(10px);
    /* frosted glass effect */
    border-radius: 15px;
    /* rounded square */
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
    transition: transform 0.2s, box-shadow 0.2s;
}

#whatsapp-button img {
    width: 35px;
    height: 35px;
}

#whatsapp-button:hover {
    transform: scale(1.1);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.4);
}

/* Mobile adjustments */
@media (max-width: 600px) {
    #whatsapp-button {
        width: 60px;
        height: 60px;
        bottom: 15px;
        right: 15px;
        border-radius: 12px;
    }

    #whatsapp-button img {
        width: 28px;
        height: 28px;
    }
}