.chat-container {
    height: calc(100vh - 180px);
    overflow-y: auto;
    padding: 1rem;
    background: #f8f9fa;
    border: 1px solid #ddd;
    border-radius: 5px;
}

.chat-message {
    margin-bottom: 1.5rem;
}

.chat-message strong {
    display: block;
    margin-bottom: 0.3rem;
}

.chat-message .bubble {
    display: inline-block;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    background-color: #ffffff;
    border: 1px solid #ddd;
    max-width: 100%;
}

.chat-message.user .bubble {
    background-color: #e6f7ff;
    border-color: #91d5ff;
}

.chat-message.assistant .bubble {
    background-color: #fffbe6;
    border-color: #ffe58f;
}