refactor: smooth answer appearance

frontend/src/conversation/ConversationBubble.tsx

@@ -1,12 +1,14 @@
+import 'katex/dist/katex.min.css';
+
 import { forwardRef, useState } from 'react';
 import ReactMarkdown from 'react-markdown';
 import { useSelector } from 'react-redux';
 import { Prism as SyntaxHighlighter } from 'react-syntax-highlighter';
 import { vscDarkPlus } from 'react-syntax-highlighter/dist/cjs/styles/prism';
+import rehypeKatex from 'rehype-katex';
 import remarkGfm from 'remark-gfm';
 import remarkMath from 'remark-math';
-import rehypeKatex from 'rehype-katex';
-import 'katex/dist/katex.min.css';
+
 import DocsGPT3 from '../assets/cute_docsgpt3.svg';
 import Dislike from '../assets/dislike.svg?react';
 import Document from '../assets/document.svg';
@@ -16,13 +18,13 @@ import Sources from '../assets/sources.svg';
 import Avatar from '../components/Avatar';
 import CopyButton from '../components/CopyButton';
 import Sidebar from '../components/Sidebar';
+import SpeakButton from '../components/TextToSpeechButton';
 import {
   selectChunks,
   selectSelectedDocs,
 } from '../preferences/preferenceSlice';
 import classes from './ConversationBubble.module.css';
 import { FEEDBACK, MESSAGE_TYPE } from './conversationModels';
-import SpeakButton from '../components/TextToSpeechButton';
 
 const DisableSourceFE = import.meta.env.VITE_DISABLE_SOURCE_FE || false;
 
@@ -41,6 +43,7 @@ const ConversationBubble = forwardRef<
   { message, type, className, feedback, handleFeedback, sources, retryBtn },
   ref,
 ) {
+  // const bubbleRef = useRef<HTMLDivElement | null>(null);
   const chunks = useSelector(selectChunks);
   const selectedDocs = useSelector(selectSelectedDocs);
   const [isLikeHovered, setIsLikeHovered] = useState(false);
@@ -141,7 +144,7 @@ const ConversationBubble = forwardRef<
                 />
                 <p className="text-base font-semibold">Sources</p>
               </div>
-              <div className="ml-3 mr-5 max-w-[90vw] md:max-w-[70vw] lg:max-w-[50vw]">
+              <div className="fade-in ml-3 mr-5 max-w-[90vw] md:max-w-[70vw] lg:max-w-[50vw]">
                 <div className="grid grid-cols-2 gap-2 lg:grid-cols-4">
                   {sources?.slice(0, 3)?.map((source, index) => (
                     <div key={index} className="relative">
@@ -190,7 +193,7 @@ const ConversationBubble = forwardRef<
                       </div>
                       {activeTooltip === index && (
                         <div
-                          className={`absolute left-1/2 z-30 max-h-48 w-40 translate-x-[-50%] translate-y-[3px] rounded-xl bg-[#FBFBFB] p-4 text-black shadow-xl dark:bg-chinese-black dark:text-chinese-silver sm:w-56`}
+                          className={`absolute left-1/2 z-50 max-h-48 w-40 translate-x-[-50%] translate-y-[3px] rounded-xl bg-[#FBFBFB] p-4 text-black shadow-xl dark:bg-chinese-black dark:text-chinese-silver sm:w-56`}
                           onMouseOver={() => setActiveTooltip(index)}
                           onMouseOut={() => setActiveTooltip(null)}
                         >
@@ -231,14 +234,14 @@ const ConversationBubble = forwardRef<
             <p className="text-base font-semibold">Answer</p>
           </div>
           <div
-            className={`ml-2 mr-5 flex max-w-[90vw] rounded-[28px] bg-gray-1000 py-[14px] px-7 dark:bg-gun-metal md:max-w-[70vw] lg:max-w-[50vw] ${
+            className={`fade-in-bubble ml-2 mr-5 flex max-w-[90vw] rounded-[28px] bg-gray-1000 py-[14px] px-7 dark:bg-gun-metal md:max-w-[70vw] lg:max-w-[50vw] ${
               type === 'ERROR'
                 ? 'relative flex-row items-center rounded-full border border-transparent bg-[#FFE7E7] p-2 py-5 text-sm font-normal text-red-3000  dark:border-red-2000 dark:text-white'
                 : 'flex-col rounded-3xl'
             }`}
           >
             <ReactMarkdown
-              className="whitespace-pre-wrap break-normal leading-normal"
+              className="fade-in whitespace-pre-wrap break-normal leading-normal"
               remarkPlugins={[remarkGfm, remarkMath]}
               rehypePlugins={[rehypeKatex]}
               components={{

frontend/src/index.css

@@ -514,3 +514,29 @@ input:-webkit-autofill:focus {
 .logs-table {
   font-family: 'IBMPlexMono-Medium', system-ui;
 }
+
+.fade-in {
+  animation: fadeIn 0.5s ease-in-out;
+}
+
+@keyframes fadeIn {
+  0% {
+    opacity: 0;
+  }
+  100% {
+    opacity: 1;
+  }
+}
+
+.fade-in-bubble {
+  opacity: 0;
+  transform: translateY(10px);
+  animation: fadeInUp 0.5s forwards;
+}
+
+@keyframes fadeInUp {
+  to {
+    opacity: 1;
+    transform: translateY(0);
+  }
+}