* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #f0f0f0;
    padding: 10px;
}

#chat-container {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 100%;
    max-width: 600px;
    height: 100%;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

#chat-messages {
    flex: 1;
    padding: 10px;
    overflow-y: auto;
}

#chat-messages .user {
    align-self: flex-end;
    background-color: #007bff;
    color: white;
    padding: 10px;
    border-radius: 10px;
    margin: 5px 0;
    max-width: 80%;
}

#chat-messages .ai {
    align-self: flex-start;
    background-color: #f1f1f1;
    color: #333;
    padding: 10px;
    border-radius: 10px;
    margin: 5px 0;
    max-width: 80%;
}

#chat-input {
    display: flex;
    border-top: 1px solid #ccc;
    padding: 10px;
    background-color: #fff;
}

#user-input {
    flex: 1 1 80%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 16px;
}

#send-button {
    flex: 0 1 20%;
    background-color: #007bff;
    color: white;
    border: none;
    padding: 10px 20px;
    margin-left: 10px;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
}

#send-button:hover {
    background-color: #0056b3;
}

@media (max-width: 600px) {
    body {
        padding: 0;
    }

    #chat-container {
        max-width: 100%;
        height: 100vh;
    }

    #chat-input {
        flex-direction: row;
        padding: 5px;
    }

    #user-input {
        margin-bottom: 0;
        width: 80%;
    }

    #send-button {
        width: 20%;
        margin-left: 0;
    }
}