body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #333;
    color: white;
    padding: 15px 30px;
}

.logo img {
    height: 40px;
}

.menu ul {
    list-style: none;
    display: flex;
    gap: 20px;
    margin: 0;
    padding: 0;
}

.menu ul li a {
    color: white;
    text-decoration: none;
    font-weight: bold;
}

.menu ul li a:hover {
    text-decoration: underline;
}

main {
    padding: 30px;
}

footer {
    background-color: #f1f1f1;
    text-align: center;
    padding: 20px;
    margin-top: 40px;
}

form {
    margin-top: 20px;
}

textarea {
    width: 100%;
    max-width: 600px;
    font-family: Arial, sans-serif;
    padding: 10px;
    font-size: 16px;
}

button {
    padding: 10px 20px;
    background-color: #333;
    color: white;
    border: none;
    cursor: pointer;
    border-radius: 4px;
}

button:hover {
    background-color: #555;
}

.container {
    max-width: 800px;
    margin: auto;
}

.chatbox {
    border: 1px solid #ccc;
    padding: 15px;
    height: 400px;
    overflow-y: auto;
    background: #fafafa;
    margin-bottom: 15px;
    border-radius: 8px;
}

.message {
    padding: 10px;
    margin-bottom: 10px;
    border-radius: 6px;
    max-width: 80%;
}

.message.user {
    background-color: #e0f7fa;
    text-align: right;
    margin-left: auto;
}

.message.bot {
    background-color: #f1f8e9;
}

.message.error {
    background-color: #ffebee;
    color: #d32f2f;
}

.markdown-content {
    font-family: Arial, sans-serif;
    line-height: 1.5;
}

.markdown-content h1, .markdown-content h2 {
    margin-top: 10px;
}

#loading {
    margin-top: 10px;
    font-style: italic;
    color: #666;
}