body {
    font-family: sans-serif;
    background-color: #f0f4f8;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}
#chat-container {
    width: 90%;
    max-width: 500px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    overflow: hidden;
}
h1 {
    background-color: #007bff;
    color: white;
    padding: 16px;
    margin: 0;
    font-size: 1.2em;
    text-align: center;
}
#chat-box {
    padding: 16px;
    height: 400px;
    overflow-y: auto;
}
.message {
    margin-bottom: 12px;
    padding: 10px 14px;
    border-radius: 18px;
    max-width: 80%;
}
.user-message {
    background-color: #007bff;
    color: white;
    margin-left: auto;
    border-bottom-right-radius: 4px;
}
.ai-message {
    background-color: #e9ecef;
    color: #333;
    margin-right: auto;
    border-bottom-left-radius: 4px;
}
#input-container {
    display: flex;
    padding: 16px;
    border-top: 1px solid #ddd;
}
#user-input {
    flex-grow: 1;
    border: 1px solid #ccc;
    padding: 10px;
    border-radius: 20px;
}
#send-btn {
    background-color: #007bff;
    color: white;
    border: none;
    padding: 10px 20px;
    margin-left: 10px;
    border-radius: 20px;
    cursor: pointer;
}
#send-btn:hover {
    background-color: #0056b3;
}