body {
    font-family: Arial, sans-serif;
    background-color: #f3f4f6;
    color: #333;
}

header {
    text-align: center;
    padding: 1rem;
    background-color: #4caf50;
    color: white;
}

main {
    max-width: 600px;
    margin: 0 auto;
    padding: 2rem;
}

#chat-container {
    border: 1px solid #ccc;
    border-radius: 10px;
    padding: 1rem;
    background-color: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

#chat-history {
    border-bottom: 1px solid #ccc;
    padding-bottom: 1rem;
    margin-bottom: 1rem;
    height: 300px;
    overflow-y: auto;
}

input[type="text"] {
    width: calc(100% - 80px);
    padding: 0.5rem;
    margin-right: 1rem;
}

button {
    padding: 0.5rem;
    cursor: pointer;
}

#voice-chat {
    background-color: #4caf50;
    color: white;
    border: none;
    border-radius: 5px;
}

#send-button {
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 5px;
}