app/static/styles.css

/* Custom scrollbar */
#chat-messages::-webkit-scrollbar {
    width: 6px;
}

#chat-messages::-webkit-scrollbar-track {
    background: #f1f1f1;
}

#chat-messages::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 3px;
}

#chat-messages::-webkit-scrollbar-thumb:hover {
    background: #666;
}

/* Message animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

#chat-messages > div {
    animation: fadeIn 0.3s ease-out forwards;
}

/* Typing indicator */
.typing-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
}

.typing-indicator .dot {
    animation: typingAnimation 1.4s infinite;
    display: inline-block;
    margin: 0 2px;
}

.typing-indicator .dot:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-indicator .dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typingAnimation {
    0% { transform: translateY(0px); }
    28% { transform: translateY(-6px); }
    44% { transform: translateY(0px); }
}