body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

#chat-container {
    width: 400px;
    height: 600px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    display: flex;
    flex-direction: column;
}

#chat-box {
    flex-grow: 1;
    padding: 20px;
    overflow-y: auto;
    border-bottom: 1px solid #ddd;
}

.message {
    margin-bottom: 15px;
    padding: 10px 15px;
    border-radius: 18px;
    max-width: 80%;
    line-height: 1.5;
}

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

.ai-message {
    background-color: #e9e9eb;
    color: #000;
    align-self: flex-start;
    margin-left: auto;
}

#input-container {
    display: flex;
    padding: 10px;
}

#user-input {
    flex-grow: 1;
    border: 1px solid #ddd;
    padding: 10px;
    border-radius: 20px;
    font-size: 16px;
}

#send-btn {
    background-color: #007bff;
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 20px;
    margin-right: 10px;
    cursor: pointer;
    font-size: 16px;
}

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