.message {
    padding: 10px;
    border-radius: 4px;
    margin-bottom: 10px;
    word-wrap: break-word;
    font-size: 0.95rem;
}
.message.user {
    background: #d1ecf1;
    text-align: right;
}
.message.bot {
    background: #e2e3e5;
    text-align: left;
}
.message.loading {
    font-style: italic;
    opacity: 0.8;
}