body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #f0f2f5;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

#chat-container {
    width: 100%;
    max-width: 600px;
    height: 80vh;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

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

.message {
    margin-bottom: 15px;
    line-height: 1.4;
}

.user-message {
    text-align: right;
}

.user-message .text {
    background-color: #007bff;
    color: white;
    padding: 10px 15px;
    border-radius: 18px 18px 4px 18px;
    display: inline-block;
    max-width: 80%;
}

.bot-message .text {
    background-color: #e9e9eb;
    color: #333;
    padding: 10px 15px;
    border-radius: 18px 18px 18px 4px;
    display: inline-block;
    max-width: 80%;
    text-align: left;
}

#input-container {
    display: flex;
    padding: 15px;
    background-color: #f9f9f9;
}

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

#send-btn {
    background-color: #007bff;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.2s;
}

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