.user-message, .ai-message {
    padding: 8px 12px; /* smaller padding */
    border-radius: 8px;
    max-width: 70%;
}

.user-message {
    background-color: #DCF8C6; /* light green */
    margin-left: auto;
    margin-right: 10px;
}

.ai-message {
    background-color: #E6E6E6; /* light gray */
    padding: 10px;
    border-radius: 8px;
    max-width: 70%;
    margin-right: auto;
    margin-left: 10px;
}

.message-meta {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    color: gray;
    margin-top: 4px;
}

.sender {
    font-weight: bold;
}