feat(layout): responsive layout with side-by-side detail and mobile tabs

Desktop (>= 1024px):
- Content grid and detail pane shown side-by-side when a detail is selected
- Three-column layout: chat | grid | detail
- Grid takes 45% width, detail fills remaining space

Mobile (< 1024px):
- Bottom tab bar with "Chat" and "Content" tabs
- Only one view visible at a time
- Auto-switches to Content tab when panel opens
- Orange dot indicator on Content tab when content is available

Extracted reusable components:
- ContentGridView: all grid renderers in one component
- DetailView: all detail views in one component
- CloseButton: reusable close/dismiss button

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/app/src/components/content/CloseButton.vue

@@ -0,0 +1,22 @@
+<template>
+  <button
+    class="absolute top-3 right-3 z-10 p-2 rounded-lg path-glass-icon transition-colors"
+    :class="isDark
+      ? 'text-white/70 hover:bg-white/10'
+      : 'text-gray-500 hover:bg-black/5 hover:text-gray-800'"
+    title="Close"
+    aria-label="Close"
+    @click="$emit('click')"
+  >
+    <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+      <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12" />
+    </svg>
+  </button>
+</template>
+
+<script setup lang="ts">
+import { useTheme } from '@/composables/useTheme'
+
+const { isDark } = useTheme()
+defineEmits<{ click: [] }>()
+</script>

packages/app/src/components/content/ContentGridView.vue

@@ -0,0 +1,156 @@
+<template>
+  <div class="flex-1 min-h-0 flex flex-col">
+    <FilmGrid
+      v-if="activeTab === 'film'"
+      :films="panelFilms"
+      :title="panelTitle"
+      @select-film="openFilmDetail"
+    >
+      <template #header-actions>
+        <slot name="header-actions">
+          <CloseButton @click="$emit('close')" />
+        </slot>
+      </template>
+    </FilmGrid>
+    <BookGrid
+      v-else-if="activeTab === 'book'"
+      :books="panelBooks"
+      :title="panelTitle"
+      @select-book="openBookDetail"
+    >
+      <template #header-actions>
+        <slot name="header-actions">
+          <CloseButton @click="$emit('close')" />
+        </slot>
+      </template>
+    </BookGrid>
+    <TVSeriesGrid
+      v-else-if="activeTab === 'tvshow'"
+      :series="panelTVSeries"
+      :title="panelTitle"
+      @select-series="openTVSeriesDetail"
+    >
+      <template #header-actions>
+        <slot name="header-actions">
+          <CloseButton @click="$emit('close')" />
+        </slot>
+      </template>
+    </TVSeriesGrid>
+    <ImageGrid
+      v-else-if="activeTab === 'image'"
+      :images="panelImages"
+      :title="panelTitle"
+      @select-image="openImageDetail"
+    >
+      <template #header-actions>
+        <slot name="header-actions">
+          <CloseButton @click="$emit('close')" />
+        </slot>
+      </template>
+    </ImageGrid>
+    <SongGrid
+      v-else-if="activeTab === 'song'"
+      :songs="panelSongs"
+      :title="panelTitle"
+      @select-song="openSongDetail"
+    >
+      <template #header-actions>
+        <slot name="header-actions">
+          <CloseButton @click="$emit('close')" />
+        </slot>
+      </template>
+    </SongGrid>
+    <MagazineGrid
+      v-else-if="activeTab === 'magazine'"
+      :sections="panelMagazineSections"
+      :hero-image-url="panelMagazineHeroImage"
+      :title="panelTitle"
+      :query="panelQuery"
+    >
+      <template #header-actions>
+        <slot name="header-actions">
+          <CloseButton @click="$emit('close')" />
+        </slot>
+      </template>
+    </MagazineGrid>
+    <NewsGrid
+      v-else-if="activeTab === 'news'"
+      :articles="panelWebResults"
+      :title="panelTitle"
+      :query="panelQuery"
+    >
+      <template #header-actions>
+        <slot name="header-actions">
+          <CloseButton @click="$emit('close')" />
+        </slot>
+      </template>
+    </NewsGrid>
+    <NewsGrid
+      v-else-if="activeTab === 'websites'"
+      :articles="panelWebsites"
+      :title="panelTitle"
+      variant="websites"
+    >
+      <template #header-actions>
+        <slot name="header-actions">
+          <CloseButton @click="$emit('close')" />
+        </slot>
+      </template>
+    </NewsGrid>
+    <PodcastGrid
+      v-else-if="activeTab === 'podcast'"
+      :podcasts="panelPodcasts"
+      :title="panelTitle"
+      @select-podcast="openPodcastDetail"
+    >
+      <template #header-actions>
+        <slot name="header-actions">
+          <CloseButton @click="$emit('close')" />
+        </slot>
+      </template>
+    </PodcastGrid>
+  </div>
+</template>
+
+<script setup lang="ts">
+import type { Film, Song, Podcast, Book, TVSeries, ImageItem } from '@aiui/core/types/content'
+import type { WebSearchResult } from '@aiui/core/types/message'
+import type { ContentTab, MagazineSection } from '@/composables/useContentPanel'
+import { useContentPanel } from '@/composables/useContentPanel'
+import FilmGrid from './FilmGrid.vue'
+import BookGrid from './BookGrid.vue'
+import TVSeriesGrid from './TVSeriesGrid.vue'
+import ImageGrid from './ImageGrid.vue'
+import SongGrid from './SongGrid.vue'
+import PodcastGrid from './PodcastGrid.vue'
+import MagazineGrid from './MagazineGrid.vue'
+import NewsGrid from './NewsGrid.vue'
+import CloseButton from './CloseButton.vue'
+
+defineProps<{
+  activeTab: ContentTab
+  panelFilms: Film[]
+  panelBooks: Book[]
+  panelTVSeries: TVSeries[]
+  panelImages: ImageItem[]
+  panelSongs: Song[]
+  panelPodcasts: Podcast[]
+  panelWebResults: WebSearchResult[]
+  panelWebsites: WebSearchResult[]
+  panelMagazineSections: MagazineSection[]
+  panelMagazineHeroImage: string | null
+  panelTitle: string
+  panelQuery: string
+}>()
+
+defineEmits<{ close: [] }>()
+
+const {
+  openFilmDetail,
+  openBookDetail,
+  openTVSeriesDetail,
+  openImageDetail,
+  openSongDetail,
+  openPodcastDetail,
+} = useContentPanel()
+</script>

packages/app/src/components/content/DetailView.vue

@@ -0,0 +1,65 @@
+<template>
+  <FilmDetail
+    v-if="selectedFilm"
+    :film="selectedFilm"
+    @back="closeFilmDetail"
+  />
+  <SongDetail
+    v-else-if="selectedSong"
+    :song="selectedSong"
+    @back="closeSongDetail"
+  />
+  <PodcastDetail
+    v-else-if="selectedPodcast"
+    :podcast="selectedPodcast"
+    @back="closePodcastDetail"
+  />
+  <BookDetail
+    v-else-if="selectedBook"
+    :book="selectedBook"
+    @back="closeBookDetail"
+  />
+  <TVSeriesDetail
+    v-else-if="selectedTVSeries"
+    :series="selectedTVSeries"
+    @back="closeTVSeriesDetail"
+  />
+  <ImageDetail
+    v-else-if="selectedImage"
+    :image="selectedImage"
+    @back="closeImageDetail"
+  />
+  <ArticleDetail
+    v-else-if="selectedArticle"
+    :article="selectedArticle"
+    @back="closeArticleDetail"
+  />
+</template>
+
+<script setup lang="ts">
+import { useContentPanel } from '@/composables/useContentPanel'
+import FilmDetail from './FilmDetail.vue'
+import BookDetail from './BookDetail.vue'
+import TVSeriesDetail from './TVSeriesDetail.vue'
+import SongDetail from './SongDetail.vue'
+import PodcastDetail from './PodcastDetail.vue'
+import ImageDetail from './ImageDetail.vue'
+import ArticleDetail from './ArticleDetail.vue'
+
+const {
+  selectedFilm,
+  selectedBook,
+  selectedTVSeries,
+  selectedImage,
+  selectedSong,
+  selectedPodcast,
+  selectedArticle,
+  closeFilmDetail,
+  closeBookDetail,
+  closeTVSeriesDetail,
+  closeImageDetail,
+  closeSongDetail,
+  closePodcastDetail,
+  closeArticleDetail,
+} = useContentPanel()
+</script>

packages/app/src/pages/ChatPage.vue

@@ -10,336 +10,153 @@
   >
     <div v-if="isDark" class="absolute inset-0 pointer-events-none bg-black/20" />
 
-    <div class="flex-1 flex h-full p-3 md:p-4 gap-3 md:gap-4">
+    <!-- Desktop layout: side-by-side -->
+    <div class="flex-1 flex h-full p-3 md:p-4 gap-3 md:gap-4" :class="isMobile ? 'hidden' : ''">
 
       <!-- Content surface (main area) -->
       <main
-        class="flex-1 min-w-0 path-glass-card overflow-hidden flex flex-col relative"
+        class="flex-1 min-w-0 path-glass-card overflow-hidden flex relative"
         :class="[
           panelSide === 'left' ? 'order-last' : 'order-first',
-          (selectedFilm || selectedBook || selectedTVSeries || selectedImage || selectedSong || selectedPodcast || selectedArticle) && 'detail-active'
+          hasDetailOpen && !hasGridContent && 'detail-active'
         ]"
       >
-        <button
-          v-if="(selectedFilm || selectedBook || selectedTVSeries || selectedImage || selectedSong || selectedPodcast || selectedArticle) && (panelOpen || chatStore.isStreaming)"
-          class="absolute top-3 right-3 z-10 p-2 rounded-lg path-glass-icon transition-colors"
-          :class="isDark
-            ? 'text-white/70 hover:bg-white/10'
-            : 'text-gray-500 hover:bg-black/5 hover:text-gray-800'"
-          title="Clear content"
-          aria-label="Clear content"
-          @click="closePanel"
+        <!-- Grid/list panel -->
+        <div
+          v-if="panelOpen && hasGridContent && !hasDetailOpen"
+          class="flex-1 min-w-0 flex flex-col"
         >
-          <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12" />
-          </svg>
-        </button>
-        <Transition name="content-fade" mode="out-in">
-          <div v-if="panelOpen" key="content" class="flex-1 min-h-0 flex flex-col">
-            <FilmDetail
-              v-if="selectedFilm"
-              :film="selectedFilm"
-              @back="closeFilmDetail"
-            />
-            <SongDetail
-              v-else-if="selectedSong"
-              :song="selectedSong"
-              @back="closeSongDetail"
-            />
-            <PodcastDetail
-              v-else-if="selectedPodcast"
-              :podcast="selectedPodcast"
-              @back="closePodcastDetail"
-            />
-            <BookDetail
-              v-else-if="selectedBook"
-              :book="selectedBook"
-              @back="closeBookDetail"
-            />
-            <TVSeriesDetail
-              v-else-if="selectedTVSeries"
-              :series="selectedTVSeries"
-              @back="closeTVSeriesDetail"
-            />
-            <ImageDetail
-              v-else-if="selectedImage"
-              :image="selectedImage"
-              @back="closeImageDetail"
-            />
-            <ArticleDetail
-              v-else-if="selectedArticle"
-              :article="selectedArticle"
-              @back="closeArticleDetail"
-            />
-            <template v-else>
-              <div
-                v-if="availableTabs.length > 1"
-                class="shrink-0 flex items-center justify-between gap-2 px-4 py-2"
-                :style="isDark
-                  ? 'border-bottom: 1px solid rgba(255, 255, 255, 0.08)'
-                  : 'border-bottom: 1px solid rgba(0, 0, 0, 0.06)'"
-              >
-                <div class="flex flex-wrap gap-1.5 flex-1 min-w-0 justify-center">
-                  <button
-                    v-for="tab in availableTabs"
-                    :key="tab"
-                    class="text-[10px] px-2 py-1 rounded-md transition-all duration-150"
-                    :class="activeTab === tab
-                      ? 'nav-tab-active'
-                      : isDark
-                        ? 'text-white/40 hover:text-white/70 hover:bg-white/5'
-                        : 'text-gray-500 hover:text-gray-800 hover:bg-black/5'"
-                    @click="setActiveTab(tab)"
-                  >
-                    {{ tabLabel(tab) }}
-                  </button>
-                </div>
-              </div>
-              <FilmGrid
-                v-if="activeTab === 'film'"
-                :films="panelFilms"
-                :title="panelTitle"
-                @select-film="openFilmDetail"
-              >
-              <template #header-actions>
-                <button
-                  class="flex items-center justify-center p-2 rounded-lg transition-colors -mr-1"
-                  :class="isDark
-                    ? 'text-white/70 hover:bg-white/10'
-                    : 'text-gray-500 hover:bg-black/5 hover:text-gray-800'"
-                  title="Clear content"
-                  aria-label="Clear content"
-                  @click="closePanel"
-                >
-                  <svg class="w-4 h-4 shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12" />
-                  </svg>
-                </button>
-              </template>
-            </FilmGrid>
-            <BookGrid
-              v-else-if="activeTab === 'book'"
-              :books="panelBooks"
-              :title="panelTitle"
-              @select-book="openBookDetail"
-            >
-              <template #header-actions>
-                <button
-                  class="flex items-center justify-center p-2 rounded-lg transition-colors -mr-1"
-                  :class="isDark
-                    ? 'text-white/70 hover:bg-white/10'
-                    : 'text-gray-500 hover:bg-black/5 hover:text-gray-800'"
-                  title="Clear content"
-                  aria-label="Clear content"
-                  @click="closePanel"
-                >
-                  <svg class="w-4 h-4 shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12" />
-                  </svg>
-                </button>
-              </template>
-            </BookGrid>
-            <TVSeriesGrid
-              v-else-if="activeTab === 'tvshow'"
-              :series="panelTVSeries"
-              :title="panelTitle"
-              @select-series="openTVSeriesDetail"
-            >
-              <template #header-actions>
-                <button
-                  class="flex items-center justify-center p-2 rounded-lg transition-colors -mr-1"
-                  :class="isDark
-                    ? 'text-white/70 hover:bg-white/10'
-                    : 'text-gray-500 hover:bg-black/5 hover:text-gray-800'"
-                  title="Clear content"
-                  aria-label="Clear content"
-                  @click="closePanel"
-                >
-                  <svg class="w-4 h-4 shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12" />
-                  </svg>
-                </button>
-              </template>
-            </TVSeriesGrid>
-            <ImageGrid
-              v-else-if="activeTab === 'image'"
-              :images="panelImages"
-              :title="panelTitle"
-              @select-image="openImageDetail"
-            >
-              <template #header-actions>
-                <button
-                  class="flex items-center justify-center p-2 rounded-lg transition-colors -mr-1"
-                  :class="isDark
-                    ? 'text-white/70 hover:bg-white/10'
-                    : 'text-gray-500 hover:bg-black/5 hover:text-gray-800'"
-                  title="Clear content"
-                  aria-label="Clear content"
-                  @click="closePanel"
-                >
-                  <svg class="w-4 h-4 shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12" />
-                  </svg>
-                </button>
-              </template>
-            </ImageGrid>
-            <SongGrid
-              v-else-if="activeTab === 'song'"
-              :songs="panelSongs"
-              :title="panelTitle"
-              @select-song="openSongDetail"
-            >
-              <template #header-actions>
-                <button
-                  class="flex items-center justify-center p-2 rounded-lg transition-colors -mr-1"
-                  :class="isDark
-                    ? 'text-white/70 hover:bg-white/10'
-                    : 'text-gray-500 hover:bg-black/5 hover:text-gray-800'"
-                  title="Clear content"
-                  aria-label="Clear content"
-                  @click="closePanel"
-                >
-                  <svg class="w-4 h-4 shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12" />
-                  </svg>
-                </button>
-              </template>
-            </SongGrid>
-            <MagazineGrid
-              v-else-if="activeTab === 'magazine'"
-              :sections="panelMagazineSections"
-              :hero-image-url="panelMagazineHeroImage"
-              :title="panelTitle"
-              :query="panelQuery"
-            >
-              <template #header-actions>
-                <button
-                  class="flex items-center justify-center p-2 rounded-lg transition-colors -mr-1"
-                  :class="isDark
-                    ? 'text-white/70 hover:bg-white/10'
-                    : 'text-gray-500 hover:bg-black/5 hover:text-gray-800'"
-                  title="Clear content"
-                  aria-label="Clear content"
-                  @click="closePanel"
-                >
-                  <svg class="w-4 h-4 shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12" />
-                  </svg>
-                </button>
-              </template>
-            </MagazineGrid>
-            <NewsGrid
-              v-else-if="activeTab === 'news'"
-              :articles="panelWebResults"
-              :title="panelTitle"
-              :query="panelQuery"
-            >
-              <template #header-actions>
-                <button
-                  class="flex items-center justify-center p-2 rounded-lg transition-colors -mr-1"
-                  :class="isDark
-                    ? 'text-white/70 hover:bg-white/10'
-                    : 'text-gray-500 hover:bg-black/5 hover:text-gray-800'"
-                  title="Clear content"
-                  aria-label="Clear content"
-                  @click="closePanel"
-                >
-                  <svg class="w-4 h-4 shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12" />
-                  </svg>
-                </button>
-              </template>
-            </NewsGrid>
-            <NewsGrid
-              v-else-if="activeTab === 'websites'"
-              :articles="panelWebsites"
-              :title="panelTitle"
-              variant="websites"
-            >
-              <template #header-actions>
-                <button
-                  class="flex items-center justify-center p-2 rounded-lg transition-colors -mr-1"
-                  :class="isDark
-                    ? 'text-white/70 hover:bg-white/10'
-                    : 'text-gray-500 hover:bg-black/5 hover:text-gray-800'"
-                  title="Clear content"
-                  aria-label="Clear content"
-                  @click="closePanel"
-                >
-                  <svg class="w-4 h-4 shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12" />
-                  </svg>
-                </button>
-              </template>
-            </NewsGrid>
-            <PodcastGrid
-              v-else-if="activeTab === 'podcast'"
-              :podcasts="panelPodcasts"
-              :title="panelTitle"
-              @select-podcast="openPodcastDetail"
-            >
-              <template #header-actions>
-                <button
-                  class="flex items-center justify-center p-2 rounded-lg transition-colors -mr-1"
-                  :class="isDark
-                    ? 'text-white/70 hover:bg-white/10'
-                    : 'text-gray-500 hover:bg-black/5 hover:text-gray-800'"
-                  title="Clear content"
-                  aria-label="Clear content"
-                  @click="closePanel"
-                >
-                  <svg class="w-4 h-4 shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12" />
-                  </svg>
-                </button>
-              </template>
-            </PodcastGrid>
-            </template>
-          </div>
-
-          <ContextLoader
-            v-else-if="chatStore.isStreaming"
-            key="loader"
-            :context-type="loaderContextType"
+          <CloseButton @click="closePanel" />
+          <div
+            v-if="availableTabs.length > 1"
+            class="shrink-0 flex items-center justify-between gap-2 px-4 py-2"
+            :style="isDark
+              ? 'border-bottom: 1px solid rgba(255, 255, 255, 0.08)'
+              : 'border-bottom: 1px solid rgba(0, 0, 0, 0.06)'"
           >
-            <template #header-actions>
+            <div class="flex flex-wrap gap-1.5 flex-1 min-w-0 justify-center">
               <button
-                class="flex items-center justify-center p-2 rounded-lg transition-colors -mr-1"
-                :class="isDark
-                  ? 'text-white/70 hover:bg-white/10'
-                  : 'text-gray-500 hover:bg-black/5 hover:text-gray-800'"
-                title="Clear content"
-                aria-label="Clear content"
-                @click="closePanel"
+                v-for="tab in availableTabs"
+                :key="tab"
+                class="text-[10px] px-2 py-1 rounded-md transition-all duration-150"
+                :class="activeTab === tab
+                  ? 'nav-tab-active'
+                  : isDark
+                    ? 'text-white/40 hover:text-white/70 hover:bg-white/5'
+                    : 'text-gray-500 hover:text-gray-800 hover:bg-black/5'"
+                @click="setActiveTab(tab)"
               >
-                <svg class="w-4 h-4 shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                  <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12" />
-                </svg>
+                {{ tabLabel(tab) }}
               </button>
-            </template>
-          </ContextLoader>
-
-          <div v-else key="empty" class="flex-1 flex items-center justify-center">
-            <div class="text-center space-y-4 animate-fade-up max-w-sm px-6">
-              <div class="empty-state-icon w-20 h-20 rounded-2xl path-glass-icon flex items-center justify-center mx-auto overflow-hidden">
-                <span class="text-3xl" :class="isDark ? 'text-[#fafafa]' : 'text-gray-800'">✦</span>
-              </div>
-              <div>
-                <h2 class="text-lg font-bold mb-1"
-                    :class="isDark ? 'text-white/80' : 'text-gray-800'">
-                  Content Surface
-                </h2>
-                <p class="text-sm leading-relaxed"
-                   :class="isDark ? 'text-white/30' : 'text-gray-400'">
-                  Ask about films, songs, or podcasts in the chat to see rich content here.
-                </p>
-              </div>
             </div>
           </div>
-        </Transition>
+          <ContentGridView
+            :active-tab="activeTab"
+            :panel-films="panelFilms"
+            :panel-books="panelBooks"
+            :panelTVSeries="panelTVSeries"
+            :panel-images="panelImages"
+            :panel-songs="panelSongs"
+            :panel-podcasts="panelPodcasts"
+            :panel-web-results="panelWebResults"
+            :panel-websites="panelWebsites"
+            :panel-magazine-sections="panelMagazineSections"
+            :panel-magazine-hero-image="panelMagazineHeroImage"
+            :panel-title="panelTitle"
+            :panel-query="panelQuery"
+            @close="closePanel"
+          />
+        </div>
+
+        <!-- Side-by-side: grid + detail on wide screens -->
+        <template v-else-if="panelOpen && hasGridContent && hasDetailOpen">
+          <div class="w-[45%] min-w-0 flex flex-col shrink-0"
+               :style="isDark
+                 ? 'border-right: 1px solid rgba(255, 255, 255, 0.08)'
+                 : 'border-right: 1px solid rgba(0, 0, 0, 0.06)'">
+            <div
+              v-if="availableTabs.length > 1"
+              class="shrink-0 flex items-center gap-2 px-4 py-2"
+              :style="isDark
+                ? 'border-bottom: 1px solid rgba(255, 255, 255, 0.08)'
+                : 'border-bottom: 1px solid rgba(0, 0, 0, 0.06)'"
+            >
+              <div class="flex flex-wrap gap-1.5 flex-1 min-w-0 justify-center">
+                <button
+                  v-for="tab in availableTabs"
+                  :key="tab"
+                  class="text-[10px] px-2 py-1 rounded-md transition-all duration-150"
+                  :class="activeTab === tab
+                    ? 'nav-tab-active'
+                    : isDark
+                      ? 'text-white/40 hover:text-white/70 hover:bg-white/5'
+                      : 'text-gray-500 hover:text-gray-800 hover:bg-black/5'"
+                  @click="setActiveTab(tab)"
+                >
+                  {{ tabLabel(tab) }}
+                </button>
+              </div>
+            </div>
+            <ContentGridView
+              :active-tab="activeTab"
+              :panel-films="panelFilms"
+              :panel-books="panelBooks"
+              :panelTVSeries="panelTVSeries"
+              :panel-images="panelImages"
+              :panel-songs="panelSongs"
+              :panel-podcasts="panelPodcasts"
+              :panel-web-results="panelWebResults"
+              :panel-websites="panelWebsites"
+              :panel-magazine-sections="panelMagazineSections"
+              :panel-magazine-hero-image="panelMagazineHeroImage"
+              :panel-title="panelTitle"
+              :panel-query="panelQuery"
+              @close="closePanel"
+            />
+          </div>
+          <div class="flex-1 min-w-0 flex flex-col">
+            <CloseButton @click="closeAllDetails" />
+            <DetailView />
+          </div>
+        </template>
+
+        <!-- Detail only (no grid content — e.g. article overlay) -->
+        <div v-else-if="panelOpen && hasDetailOpen" class="flex-1 min-w-0 flex flex-col detail-active">
+          <CloseButton @click="closePanel" />
+          <DetailView />
+        </div>
+
+        <!-- Loading state -->
+        <ContextLoader
+          v-else-if="chatStore.isStreaming"
+          :context-type="loaderContextType"
+        >
+          <template #header-actions>
+            <CloseButton @click="closePanel" />
+          </template>
+        </ContextLoader>
+
+        <!-- Empty state -->
+        <div v-else class="flex-1 flex items-center justify-center">
+          <div class="text-center space-y-4 animate-fade-up max-w-sm px-6">
+            <div class="empty-state-icon w-20 h-20 rounded-2xl path-glass-icon flex items-center justify-center mx-auto overflow-hidden">
+              <span class="text-3xl" :class="isDark ? 'text-[#fafafa]' : 'text-gray-800'">✦</span>
+            </div>
+            <div>
+              <h2 class="text-lg font-bold mb-1"
+                  :class="isDark ? 'text-white/80' : 'text-gray-800'">
+                Content Surface
+              </h2>
+              <p class="text-sm leading-relaxed"
+                 :class="isDark ? 'text-white/30' : 'text-gray-400'">
+                Ask about films, songs, or podcasts in the chat to see rich content here.
+              </p>
+            </div>
+          </div>
+        </div>
       </main>
 
-      <!-- Chat panel: high z-index so it + dropdowns stay above content -->
+      <!-- Chat panel -->
       <aside
         class="relative z-[100] w-80 xl:w-96 shrink-0 flex flex-col path-glass-card overflow-visible"
         :class="panelSide === 'left' ? 'order-first' : 'order-last'"
@@ -349,7 +166,111 @@
           @switch-side="chatStore.switchSide()"
         />
       </aside>
+    </div>
 
+    <!-- Mobile layout -->
+    <div v-if="isMobile" class="flex-1 flex flex-col min-h-0">
+      <!-- Chat view -->
+      <div v-show="mobileTab === 'chat'" class="flex-1 min-h-0 flex flex-col p-2 pb-0">
+        <div class="flex-1 min-h-0 path-glass-card flex flex-col rounded-2xl overflow-hidden">
+          <ChatWindow
+            variant="standalone"
+            :show-close="false"
+          />
+        </div>
+      </div>
+
+      <!-- Content view -->
+      <div v-show="mobileTab === 'content'" class="flex-1 min-h-0 flex flex-col p-2 pb-0">
+        <div class="flex-1 min-h-0 path-glass-card flex flex-col rounded-2xl overflow-hidden">
+          <template v-if="panelOpen && hasDetailOpen">
+            <DetailView />
+          </template>
+          <template v-else-if="panelOpen">
+            <div
+              v-if="availableTabs.length > 1"
+              class="shrink-0 flex items-center gap-2 px-3 pt-2 pb-1 overflow-x-auto scrollbar-hide"
+            >
+              <button
+                v-for="tab in availableTabs"
+                :key="tab"
+                class="text-[10px] px-2.5 py-1.5 rounded-lg font-medium whitespace-nowrap transition-all duration-150"
+                :class="activeTab === tab
+                  ? 'nav-tab-active'
+                  : isDark
+                    ? 'text-white/40 hover:text-white/70 hover:bg-white/5'
+                    : 'text-gray-500 hover:text-gray-800 hover:bg-black/5'"
+                @click="setActiveTab(tab)"
+              >
+                {{ tabLabel(tab) }}
+              </button>
+            </div>
+            <ContentGridView
+              :active-tab="activeTab"
+              :panel-films="panelFilms"
+              :panel-books="panelBooks"
+              :panelTVSeries="panelTVSeries"
+              :panel-images="panelImages"
+              :panel-songs="panelSongs"
+              :panel-podcasts="panelPodcasts"
+              :panel-web-results="panelWebResults"
+              :panel-websites="panelWebsites"
+              :panel-magazine-sections="panelMagazineSections"
+              :panel-magazine-hero-image="panelMagazineHeroImage"
+              :panel-title="panelTitle"
+              :panel-query="panelQuery"
+              @close="closePanel"
+            />
+          </template>
+          <template v-else-if="chatStore.isStreaming">
+            <ContextLoader :context-type="loaderContextType" />
+          </template>
+          <div v-else class="flex-1 flex items-center justify-center">
+            <div class="text-center space-y-3 px-6">
+              <div class="empty-state-icon w-16 h-16 rounded-2xl path-glass-icon flex items-center justify-center mx-auto overflow-hidden">
+                <span class="text-2xl" :class="isDark ? 'text-[#fafafa]' : 'text-gray-800'">✦</span>
+              </div>
+              <p class="text-xs" :class="isDark ? 'text-white/30' : 'text-gray-400'">
+                Ask about something in the chat to see content here.
+              </p>
+            </div>
+          </div>
+        </div>
+      </div>
+
+      <!-- Bottom tab bar -->
+      <div
+        class="shrink-0 flex items-center px-2 py-1.5 gap-1"
+      >
+        <button
+          class="flex-1 flex items-center justify-center gap-1.5 py-2 rounded-xl text-xs font-medium transition-all duration-150"
+          :class="mobileTab === 'chat'
+            ? isDark ? 'bg-white/10 text-white/90' : 'bg-black/8 text-gray-900'
+            : isDark ? 'text-white/40 hover:text-white/60' : 'text-gray-400 hover:text-gray-600'"
+          @click="mobileTab = 'chat'"
+        >
+          <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M8 12h.01M12 12h.01M16 12h.01M21 12c0 4.418-4.03 8-9 8a9.863 9.863 0 01-4.255-.949L3 20l1.395-3.72C3.512 15.042 3 13.574 3 12c0-4.418 4.03-8 9-8s9 3.582 9 8z" />
+          </svg>
+          Chat
+        </button>
+        <button
+          class="flex-1 flex items-center justify-center gap-1.5 py-2 rounded-xl text-xs font-medium transition-all duration-150 relative"
+          :class="mobileTab === 'content'
+            ? isDark ? 'bg-white/10 text-white/90' : 'bg-black/8 text-gray-900'
+            : isDark ? 'text-white/40 hover:text-white/60' : 'text-gray-400 hover:text-gray-600'"
+          @click="mobileTab = 'content'"
+        >
+          <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 11H5m14 0a2 2 0 012 2v6a2 2 0 01-2 2H5a2 2 0 01-2-2v-6a2 2 0 012-2m14 0V9a2 2 0 00-2-2M5 11V9a2 2 0 012-2m0 0V5a2 2 0 012-2h6a2 2 0 012 2v2M7 7h10" />
+          </svg>
+          Content
+          <span
+            v-if="panelOpen && mobileTab === 'chat'"
+            class="absolute top-1 right-[30%] w-1.5 h-1.5 rounded-full bg-accent"
+          />
+        </button>
+      </div>
     </div>
 
     <PlayerBar />
@@ -357,27 +278,15 @@
 </template>
 
 <script setup lang="ts">
-import { computed } from 'vue'
+import { computed, ref, onMounted, onUnmounted, watch } from 'vue'
 import { useChatStore } from '@/stores/chat'
 import { useTheme } from '@/composables/useTheme'
 import { useAI } from '@/composables/useAI'
 import { useContentPanel, type ContentTab } from '@/composables/useContentPanel'
 import ChatWindow from '@/components/chat/ChatWindow.vue'
-import FilmGrid from '@/components/content/FilmGrid.vue'
-import ArticleDetail from '@/components/content/ArticleDetail.vue'
-import FilmDetail from '@/components/content/FilmDetail.vue'
-import BookGrid from '@/components/content/BookGrid.vue'
-import BookDetail from '@/components/content/BookDetail.vue'
-import TVSeriesGrid from '@/components/content/TVSeriesGrid.vue'
-import TVSeriesDetail from '@/components/content/TVSeriesDetail.vue'
-import SongGrid from '@/components/content/SongGrid.vue'
-import SongDetail from '@/components/content/SongDetail.vue'
-import PodcastGrid from '@/components/content/PodcastGrid.vue'
-import PodcastDetail from '@/components/content/PodcastDetail.vue'
-import MagazineGrid from '@/components/content/MagazineGrid.vue'
-import NewsGrid from '@/components/content/NewsGrid.vue'
-import ImageGrid from '@/components/content/ImageGrid.vue'
-import ImageDetail from '@/components/content/ImageDetail.vue'
+import ContentGridView from '@/components/content/ContentGridView.vue'
+import DetailView from '@/components/content/DetailView.vue'
+import CloseButton from '@/components/content/CloseButton.vue'
 import ContextLoader from '@/components/content/ContextLoader.vue'
 import PlayerBar from '@/components/player/PlayerBar.vue'
 import { usePlayer } from '@/composables/usePlayer'
@@ -413,25 +322,51 @@ const {
   selectedSong,
   selectedPodcast,
   selectedArticle,
-  openFilmDetail,
   closeFilmDetail,
-  openBookDetail,
   closeBookDetail,
-  openTVSeriesDetail,
   closeTVSeriesDetail,
-  openImageDetail,
   closeImageDetail,
-  openSongDetail,
   closeSongDetail,
-  openPodcastDetail,
   closePodcastDetail,
-  openArticleDetail,
   closeArticleDetail,
   closePanel,
 } = useContentPanel()
 
 const panelSide = computed(() => chatStore.panelSide)
 
+// Mobile detection
+const windowWidth = ref(window.innerWidth)
+const isMobile = computed(() => windowWidth.value < 1024)
+const mobileTab = ref<'chat' | 'content'>('chat')
+
+function onResize() { windowWidth.value = window.innerWidth }
+onMounted(() => window.addEventListener('resize', onResize))
+onUnmounted(() => window.removeEventListener('resize', onResize))
+
+// Auto-switch to content tab on mobile when panel opens
+watch(panelOpen, (open) => {
+  if (open && isMobile.value) mobileTab.value = 'content'
+})
+
+const hasDetailOpen = computed(() =>
+  !!(selectedFilm.value || selectedBook.value || selectedTVSeries.value ||
+     selectedImage.value || selectedSong.value || selectedPodcast.value || selectedArticle.value)
+)
+
+const hasGridContent = computed(() =>
+  panelOpen.value && availableTabs.value.length > 0
+)
+
+function closeAllDetails() {
+  closeFilmDetail()
+  closeBookDetail()
+  closeTVSeriesDetail()
+  closeImageDetail()
+  closeSongDetail()
+  closePodcastDetail()
+  closeArticleDetail()
+}
+
 const TAB_LABELS: Record<ContentTab, string> = {
   film: 'Films',
   book: 'Books',
@@ -448,7 +383,6 @@ function tabLabel(tab: ContentTab): string {
   return TAB_LABELS[tab] ?? tab
 }
 
-// Infer loader type from last user message when streaming (before tags are parsed)
 const loaderContextType = computed(() => {
   if (panelOpen.value) return contentType.value
   const lastUser = [...chatStore.messages].reverse().find((m) => m.role === 'user')
@@ -474,13 +408,6 @@ const loaderContextType = computed(() => {
 .content-fade-leave-to {
   opacity: 0;
 }
-
-/*
- * When film detail is active, hide the border so the hero image
- * fills edge-to-edge with no visible seam lines.
- * The card keeps its border-radius and overflow:hidden,
- * so the image is still clipped to rounded corners.
- */
 .detail-active {
   border-color: transparent !important;
 }