feat: thinking style optimize

app/components/chat.tsx

@@ -147,6 +147,7 @@ import {
   WebTranscriptionApi,
 } from "../utils/speech";
 import { FileInfo } from "../client/platforms/utils";
+import { ThinkingContent } from "./thinking-content";
 
 const ttsPlayer = createTTSPlayer();
 
@@ -2151,6 +2152,7 @@ function _Chat() {
                             ))}
                           </div>
                         )}
+                        {!isUser && <ThinkingContent message={message} />}
                         <div className={styles["chat-message-item"]}>
                           <Markdown
                             key={message.streaming ? "loading" : "done"}

app/components/thinking-content.module.scss

@@ -0,0 +1,106 @@
+.thinking-container {
+  position: relative;
+  border: var(--border-in-light);
+  border-radius: 10px;
+  margin-top: 10px;
+  overflow: hidden;
+  transition: all 0.3s ease;
+  box-shadow: var(--card-shadow);
+
+  .thinking-header {
+    position: sticky;
+    top: 0;
+    background: var(--white);
+    padding: 10px;
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    border-bottom: var(--border-in-light);
+
+    .thinking-title {
+      display: flex;
+      align-items: center;
+      gap: 5px;
+      font-size: 12px;
+      color: var(--black);
+      padding: 2px 5px;
+      border-radius: 5px;
+    }
+
+    .thinking-toggle {
+      display: flex;
+      align-items: center;
+      gap: 5px;
+      font-size: 12px;
+      color: var(--black);
+      padding: 2px 5px;
+      border-radius: 5px;
+      transition: background-color 0.3s ease;
+      cursor: pointer;
+
+      &:hover {
+        background-color: rgba(0, 0, 0, 0.05);
+        text-decoration: none;
+      }
+    }
+  }
+
+  .thinking-content-wrapper {
+    position: relative;
+    overflow: hidden;
+  }
+
+  .thinking-content {
+    font-size: 12px;
+    line-height: 1.5;
+    white-space: pre-wrap;
+    color: var(--black);
+    overflow-wrap: break-word;
+    scroll-behavior: smooth;
+    max-height: 50px;
+    overflow-y: hidden;
+    position: relative;
+    transition:
+      max-height 0.3s ease,
+      overflow-y 0.3s ease;
+    padding: 10px;
+
+    .thinking-content-text {
+      position: relative;
+      z-index: 0;
+    }
+
+    &.expanded {
+      overflow-y: auto;
+      max-height: 300px;
+    }
+  }
+
+  .thinking-content-top,
+  .thinking-content-bottom {
+    position: absolute;
+    left: 0;
+    right: 0;
+    height: 30px;
+    pointer-events: none;
+    z-index: 1;
+  }
+
+  .thinking-content-top {
+    top: 0;
+    background: linear-gradient(
+      to bottom,
+      var(--white) 0%,
+      rgba(255, 255, 255, 0) 100%
+    );
+  }
+
+  .thinking-content-bottom {
+    bottom: 0;
+    background: linear-gradient(
+      to top,
+      var(--white) 0%,
+      rgba(255, 255, 255, 0) 100%
+    );
+  }
+}

app/components/thinking-content.tsx

@@ -0,0 +1,67 @@
+import clsx from "clsx";
+import { useState, useRef, useEffect } from "react";
+import { ChatMessage } from "../store";
+import Locale from "../locales";
+
+import styles from "./thinking-content.module.scss";
+import MaxIcon from "../icons/max.svg";
+import MinIcon from "../icons/min.svg";
+
+export function ThinkingContent({ message }: { message: ChatMessage }) {
+  const [expanded, setExpanded] = useState(false);
+  const thinkingContentRef = useRef<HTMLDivElement>(null);
+
+  const thinkingContent = message.reasoningContent;
+  const isThinking =
+    message.streaming && thinkingContent && thinkingContent.length > 0;
+
+  // Auto-scroll to bottom of thinking container
+  useEffect(() => {
+    if (isThinking && thinkingContentRef.current) {
+      requestAnimationFrame(() => {
+        if (thinkingContentRef.current) {
+          thinkingContentRef.current.scrollTop =
+            thinkingContentRef.current.scrollHeight;
+        }
+      });
+    }
+  }, [thinkingContent, isThinking, expanded]);
+
+  if (!thinkingContent) return null;
+
+  return (
+    <div
+      className={clsx(
+        styles["thinking-container"],
+        expanded && styles["expanded"],
+      )}
+    >
+      <div className={styles["thinking-header"]}>
+        <div className={styles["thinking-title"]}>
+          {Locale.Chat.Thinking.Title}
+        </div>
+        <div
+          className={styles["thinking-toggle"]}
+          onClick={() => setExpanded(!expanded)}
+        >
+          {expanded ? <MinIcon /> : <MaxIcon />}
+        </div>
+      </div>
+      <div className={styles["thinking-content-wrapper"]}>
+        {!expanded && <div className={styles["thinking-content-top"]}></div>}
+        <div
+          className={clsx(
+            styles["thinking-content"],
+            expanded && styles["expanded"],
+          )}
+          ref={thinkingContentRef}
+        >
+          <div className={styles["thinking-content-text"]}>
+            {thinkingContent}
+          </div>
+        </div>
+        {!expanded && <div className={styles["thinking-content-bottom"]}></div>}
+      </div>
+    </div>
+  );
+}