body {
    background-color: #f8f9fa;
}

.chat-box {
    height: 460px;
    overflow-y: auto;
    border: 1px solid #dee2e6;
    border-radius: 8px;
    padding: 16px;
    background: #ffffff;
}

.user-message {
    background: #0d6efd;
    color: white;
    padding: 10px 14px;
    border-radius: 12px;
    margin-bottom: 12px;
    margin-left: auto;
    max-width: 80%;
}

.bot-message {
    background: #f1f3f5;
    color: #212529;
    padding: 10px 14px;
    border-radius: 12px;
    margin-bottom: 12px;
    margin-right: auto;
    max-width: 85%;
}

.sources {
    font-size: 0.9rem;
}

.sources ul {
    margin-bottom: 0;
}