.container[data-theme-layout="simple-layout"] {
    display: flex;
    height: 100vh;
    justify-content: center;
    align-items: center;
}
.main-pane {
    width: 80%;
    max-width: 800px;
    display: flex;
    flex-direction: column;
}
.message-container {
    flex-grow: 1;
    overflow-y: auto;
    padding: 20px;
}
.user-message {
    background: #DCF8C6;
    padding: 10px;
    margin: 5px 0;
    border-radius: 5px;
    align-self: flex-end;
    max-width: 70%;
}
.assistant-message {
    background: #E6E6E6;
    padding: 10px;
    margin: 5px 0;
    border-radius: 5px;
    align-self: flex-start;
    max-width: 70%;
}
.error-message {
    background: #F8D7DA;
    color: #721C24;
    padding: 10px;
    margin: 5px 0;
    border-radius: 5px;
}
.send-container {
    padding: 10px;
    border-top: 1px solid #ddd;
}
