body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f9;
}

.chat-container {
    width: 100%;
    max-width: 600px;
    margin: 50px auto;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
}

.chat-window {
    height: 400px;
    overflow-y: scroll;
    padding: 20px;
    background: #e9ecef;
}

.message {
    margin: 10px 0;
    padding: 10px 15px;
    border-radius: 8px;
    max-width: 80%;
}

.message.user {
    background: #007bff;
    color: #fff;
    align-self: flex-end;
}

.message.assistant {
    background: #f8f9fa;
    color: #333;
    align-self: flex-start;
}

form {
    display: flex;
    border-top: 1px solid #ddd;
    padding: 10px;
    background: #fff;
}

input {
    flex: 1;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

button {
    background: #007bff;
    color: #fff;
    border: none;
    padding: 10px 15px;
    border-radius: 4px;
    cursor: pointer;
}