.chat-interface {
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 10px;
    max-width: 600px;
    margin: 20px auto;
    height: 700px;
    display: flex;
    flex-direction: column;
}

.chat-messages {
    flex-grow: 1;
    overflow-y: auto;
    border-bottom: 1px solid #eee;
    padding: 10px;
}

.chat-message {
    margin-bottom: 10px;
    padding: 5px;
    background-color: #fbfbfb;
    border-radius: 3px;
}

.message-time {
    font-size: 0.8em;
    color: #666;
    display: block;
}

.chat-input-area {
    display: flex;
    margin-top: 10px;
}

#message-input {
    flex-grow: 1;
    padding: 5px;
    border: 1px solid #ddd;
    border-radius: 3px;
}

#send-message-btn {
    margin-left: 5px;
    padding: 5px 10px;
    background-color: #0073aa;
    color: white;
    border: none;
    border-radius: 3px;
    cursor: pointer;
}

#send-message-btn:hover {
    background-color: #005a87;
}