body {
    background-color: #ffffff;
    color: #333;
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

#chatWindow {
    width: 80%;
    max-width: 600px;
    height: 400px;
    margin: 20px auto;
    border: 2px solid #ddd;
    border-radius: 5px;
    padding: 20px;
    overflow-y: scroll;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.05);
}

#inputField {
    width: 78%;
    max-width: 580px;
    margin: 20px auto;
    padding: 10px;
    display: block;
    background-color: #fff;
    border: 2px solid #ddd;
    border-radius: 5px;
    color: #333;
}

#sendButton {
    display: block;
    width: 80%;
    max-width: 600px;
    margin: 0 auto 20px;
    padding: 10px;
    background-color: #0086cb;
    border: none;
    border-radius: 5px;
    color: #fff;
    cursor: pointer;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.05);
}

#sendButton:hover {
    background-color: #0073b1;
}

#logo {
    display: block;
    width: 200px;
    margin: 20px auto;
}

#subtitle {
    text-align: center;
    color: #666;
    font-size: 1.2em;
    margin-bottom: 20px;
}

@media (max-width: 600px) {
    #chatWindow,
    #inputField,
    #sendButton {
        width: 95%;
    }

    #logo {
        width: 150px;
    }
}


#copyButton {
    display: inline-block;
    margin: 5px;
    padding: 5px 10px;
    background-color: #0086cb;
    border: none;
    border-radius: 5px;
    color: #fff;
    cursor: pointer;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.05);
    font-size: 0.8em;
}

#copyButton:hover {
    background-color: #0073b1;
}