refactor(ui): enhance TradeDetailScreen with responsive design and image gallery

- Add responsive hooks (useResponsive, useResponsiveValue, useResponsiveSpacing)
- Replace custom image handling with ImageGrid and ImageGallery components
- Update styling with modern typography and spacing adjustments
- Add image modal for fullscreen gallery view

src/screens/trade/TradeDetailScreen.tsx

@@ -1,22 +1,23 @@
-import React, { useState, useEffect, useCallback } from 'react';
+import React, { useState, useEffect, useCallback, useMemo } from 'react';
 import { View, ScrollView, Image, StyleSheet, Pressable, Alert, Modal } from 'react-native';
 import { SafeAreaView } from 'react-native-safe-area-context';
 import { MaterialCommunityIcons } from '@expo/vector-icons';
 import { useRouter } from 'expo-router';
 import { useAppColors, spacing, borderRadius, fontSizes, shadows, type AppColors } from '../../theme';
-import { Text, Loading, AppBackButton } from '../../components/common';
+import { Text, Loading, AppBackButton, ImageGrid, ImageGallery } from '../../components/common';
 import { tradeService } from '../../services/trade/tradeService';
 import { messageService } from '../../services/message/messageService';
 import { useIsAuthenticated, useCurrentUser } from '../../stores/auth';
 import type { TradeItemDetailDTO } from '../../types/trade';
 import { TRADE_CONDITION_MAP } from '../../types/trade';
 import { hrefChat, hrefEditTrade } from '../../navigation/hrefs';
+import { useResponsive, useResponsiveValue, useResponsiveSpacing } from '../../hooks/useResponsive';
 
 function createStyles(colors: AppColors) {
   return StyleSheet.create({
     container: {
       flex: 1,
-      backgroundColor: colors.background.paper,
+      backgroundColor: colors.background.default,
     },
     header: {
       flexDirection: 'row',
@@ -39,17 +40,6 @@ function createStyles(colors: AppColors) {
     headerRight: {
       width: 40,
     },
-    imageContainer: {
-      width: '100%',
-      aspectRatio: 1,
-      backgroundColor: colors.background.paper,
-      position: 'relative',
-    },
-    image: {
-      width: '100%',
-      height: '100%',
-      resizeMode: 'contain',
-    },
     // 降价标签
     discountBadge: {
       position: 'absolute',
@@ -130,7 +120,7 @@ function createStyles(colors: AppColors) {
       flexDirection: 'row',
       alignItems: 'flex-start',
       gap: spacing.sm,
-      marginBottom: spacing.md,
+      marginBottom: spacing.lg,
     },
     conditionBadge: {
       paddingHorizontal: 8,
@@ -189,10 +179,9 @@ function createStyles(colors: AppColors) {
       color: '#FF7875',
     },
     title: {
-      fontSize: fontSizes['3xl'],
-      fontWeight: '600',
+      fontWeight: '800',
       color: colors.text.primary,
-      lineHeight: 34,
+      letterSpacing: -0.3,
       flex: 1,
     },
     // 商品属性行
@@ -217,12 +206,11 @@ function createStyles(colors: AppColors) {
       color: colors.text.primary,
       fontWeight: '500',
     },
-    // 描述
+    // 描述 - 与帖子正文同步
     contentText: {
-      fontSize: fontSizes.lg,
       color: colors.text.primary,
-      lineHeight: 28,
-      marginBottom: spacing.md,
+      letterSpacing: 0.2,
+      marginBottom: spacing.lg,
     },
     // 底部操作栏
     bottomBar: {
@@ -362,12 +350,23 @@ export function TradeDetailScreen({ tradeId }: TradeDetailScreenProps) {
 
   const [item, setItem] = useState<TradeItemDetailDTO | null>(null);
   const [loading, setLoading] = useState(true);
-  const [currentImageIndex, setCurrentImageIndex] = useState(0);
   const [manageModalVisible, setManageModalVisible] = useState(false);
+  const [showImageModal, setShowImageModal] = useState(false);
+  const [selectedImageIndex, setSelectedImageIndex] = useState(0);
 
   const isOwner = item?.user_id === currentUser?.id;
 
+  // 响应式 hook（与帖子同步）
+  const {
+    width,
+    isMobile,
+    isTablet,
+    isDesktop,
+    isWideScreen,
+  } = useResponsive();
 
+  const responsivePadding = useResponsiveSpacing({ xs: 12, sm: 14, md: 16, lg: 20, xl: 24, '2xl': 28, '3xl': 32, '4xl': 40 });
+  const responsiveGap = useResponsiveSpacing({ xs: 8, sm: 10, md: 12, lg: 16, xl: 20, '2xl': 24, '3xl': 28, '4xl': 32 });
 
   const fetchItem = useCallback(async () => {
     try {
@@ -456,6 +455,28 @@ export function TradeDetailScreen({ tradeId }: TradeDetailScreenProps) {
     }
   }, [isAuth, item?.author?.id, router]);
 
+  // 响应式图片间距和圆角（与帖子同步）
+  const imageGap = isDesktop ? 12 : isTablet ? 10 : 8;
+  const imageBorderRadius = isDesktop ? borderRadius.xl : borderRadius.lg;
+
+  const images = item?.images || [];
+
+  // 转换图片格式给 ImageGrid 使用
+  const tradeImages = useMemo(() => {
+    return images.map(img => ({
+      id: img.id,
+      url: img.url || img.preview_url_large || img.preview_url || '',
+      thumbnail_url: img.preview_url || img.preview_url_large || img.url || '',
+      width: img.width,
+      height: img.height,
+    }));
+  }, [images]);
+
+  const handleImagePress = useCallback((allImages: any[], index: number) => {
+    setSelectedImageIndex(index);
+    setShowImageModal(true);
+  }, []);
+
   if (loading) {
     return <Loading fullScreen />;
   }
@@ -470,9 +491,6 @@ export function TradeDetailScreen({ tradeId }: TradeDetailScreenProps) {
     );
   }
 
-  const images = item.images || [];
-  const currentImage = images[currentImageIndex];
-
   return (
     <SafeAreaView style={styles.container} edges={['top', 'bottom']}>
       <View style={styles.header}>
@@ -484,7 +502,7 @@ export function TradeDetailScreen({ tradeId }: TradeDetailScreenProps) {
       </View>
 
       <ScrollView>
-        <View style={styles.content}>
+        <View style={[styles.content, { paddingHorizontal: responsivePadding, paddingTop: responsivePadding }]}>
           {/* 卖家信息头部 */}
           {item.author && (
             <View>
@@ -522,34 +540,56 @@ export function TradeDetailScreen({ tradeId }: TradeDetailScreenProps) {
             </View>
           )}
 
-          {/* 标题 */}
+          {/* 标题 - 与帖子同步 */}
           <View style={styles.titleRow}>
-            <Text style={styles.title} numberOfLines={2}>{item.title}</Text>
+            <Text
+              style={[
+                styles.title,
+                {
+                  fontSize: isDesktop ? fontSizes['3xl'] : isTablet ? fontSizes['2xl'] : fontSizes['2xl'],
+                  lineHeight: isDesktop ? 40 : isTablet ? 36 : 32,
+                },
+              ]}
+              numberOfLines={2}
+            >
+              {item.title}
+            </Text>
           </View>
 
-          {/* 商品描述 */}
+          {/* 商品描述 - 与帖子正文同步 */}
           {item.content && (
-            <Text style={styles.contentText}>{item.content}</Text>
+            <Text
+              style={[
+                styles.contentText,
+                {
+                  fontSize: isDesktop ? fontSizes.xl : isTablet ? fontSizes.lg : fontSizes.lg,
+                  lineHeight: isDesktop ? 32 : isTablet ? 30 : 28,
+                },
+              ]}
+            >
+              {item.content}
+            </Text>
           )}
         </View>
 
-        {/* 图片放在文字下方 */}
-        {images.length > 0 && (
-          <View style={{ paddingHorizontal: spacing.md, paddingBottom: spacing.md }}>
-            {images.map((img, idx) => (
-              <View key={img.id || idx} style={[styles.imageContainer, { marginBottom: spacing.md, borderRadius: borderRadius.lg, overflow: 'hidden' }]}>
-                <Image
-                  source={{ uri: img.url || img.preview_url_large || img.preview_url || '' }}
-                  style={styles.image}
-                />
-              </View>
-            ))}
+        {/* 图片 - 使用 ImageGrid 与帖子同步 */}
+        {tradeImages.length > 0 && (
+          <View style={{ paddingHorizontal: responsivePadding, paddingBottom: responsivePadding }}>
+            <ImageGrid
+              images={tradeImages}
+              mode="auto"
+              gap={imageGap}
+              borderRadius={imageBorderRadius}
+              maxDisplayCount={isWideScreen ? 20 : 100}
+              showMoreOverlay={false}
+              onImagePress={handleImagePress}
+            />
           </View>
         )}
 
         {/* 内容区右下角属性文字（仅出售商品显示） */}
         {item.trade_type === 'sell' && (
-          <View style={{ paddingHorizontal: spacing.md, paddingBottom: spacing.md }}>
+          <View style={{ paddingHorizontal: responsivePadding, paddingBottom: responsivePadding }}>
             <View style={styles.contentAttrs}>
               <Text style={styles.contentAttrText}>品牌：{item.brand || '其他'}</Text>
               <Text style={styles.contentAttrText}>
@@ -617,6 +657,18 @@ export function TradeDetailScreen({ tradeId }: TradeDetailScreenProps) {
           </View>
         </Pressable>
       </Modal>
+
+      {/* 图片预览 */}
+      <ImageGallery
+        visible={showImageModal}
+        images={tradeImages.map(img => ({
+          id: img.id || img.url || String(Math.random()),
+          url: img.url || '',
+        }))}
+        initialIndex={selectedImageIndex}
+        onClose={() => setShowImageModal(false)}
+        enableSave
+      />
     </SafeAreaView>
   );
 }