.whatsapp-login-button {
    display: block;
    width: 100%;
    padding: 10px;
    margin: 15px 0;
    text-align: center;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
    transition: background-color 0.3s;
}

.whatsapp-modal {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
}

.whatsapp-modal-content {
    background-color: #fefefe;
    margin: 15% auto;
    padding: 20px;
    border: 1px solid #888;
    width: 90%;
    max-width: 400px;
    border-radius: 5px;
    position: relative;
}

.whatsapp-modal-close {
    position: absolute;
    right: 15px;
    top: 10px;
    font-size: 24px;
    font-weight: bold;
    background: none;
    border: none;
    cursor: pointer;
}

.whatsapp-button {
    display: block;
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
}

#whatsapp-phone, #whatsapp-code {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ddd;
    border-radius: 4px;
}

#whatsapp-message {
    margin: 10px 0;
    padding: 10px;
    border-radius: 4px;
    display: none;
}

#whatsapp-message.success {
    background-color: #d4edda;
    color: #155724;
    display: block;
}

#whatsapp-message.error {
    background-color: #f8d7da;
    color: #721c24;
    display: block;
}

@media (max-width: 480px) {
    .whatsapp-modal-content {
        margin: 30% auto;
        width: 95%;
    }
}