body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f9;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.chat-container {
    width: 400px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

h1 {
    background: #007bff;
    color: white;
    margin: 0;
    padding: 15px;
    text-align: center;
    font-size: 1.5em;
}

#chat-box {
    flex-grow: 1;
    padding: 15px;
    overflow-y: auto;
    max-height: 400px;
}

.message {
    margin: 10px 0;
    padding: 10px;
    border-radius: 5px;
    max-width: 80%;
}

.user-message {
    background: #007bff;
    color: white;
    margin-left: auto;
    text-align: right;
}

.bot-message {
    background: #e9ecef;
    color: #333;
    margin-right: auto;
}

.bot-error {
    background: #f8d7da;
    color: #721c24;
    margin-right: auto;
}

.input-area {
    display: flex;
    padding: 10px;
    border-top: 1px solid #ddd;
}

#user-input {
    flex-grow: 1;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    margin-right: 10px;
}

button {
    padding: 10px 15px;
    background: #007bff;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background: #0056b3;
}

.quick-replies {
    padding: 10px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.quick-replies button {
    background: #6c757d;
    padding: 8px 12px;
    font-size: 0.9em;
}

.quick-replies button:hover {
    background: #5a6268;
}