Separate scrolling for browse and details page even though they are laid out side by side on the layout (with one hidden out of screen).

frontend/src/App.vue

@@ -35,6 +35,7 @@
       :mpc-be-connected="mpcBeConnected"
       :nav-row="1"
       :position="headerPosition"
+      :style="headerStyle"
       @search="updateSearchQuery"
       @go-back="goBack"
     />
@@ -62,7 +63,12 @@
     <div v-else class="page-slider">
       <div class="page-slider-track" :class="{ 'is-detail-open': isDetailOpen }">
         <!-- Browse/Search page (left panel) -->
-        <main class="main-content page-slider-panel" data-nav-scope="browse">
+        <main
+          ref="browsePanelRef"
+          class="main-content page-slider-panel"
+          data-nav-scope="browse"
+          @scroll.passive="handlePanelScroll('browse')"
+        >
           <!-- Movies and Series views - both always rendered for smooth transitions -->
           <div v-if="!searchQuery" class="view-container">
             <Transition name="view-zoom" mode="out-in">
@@ -152,7 +158,12 @@
         </main>
 
         <!-- Detail page (right panel) -->
-        <main class="main-content page-slider-panel page-slider-detail-panel" data-nav-scope="detail">
+        <main
+          ref="detailPanelRef"
+          class="main-content page-slider-panel page-slider-detail-panel"
+          data-nav-scope="detail"
+          @scroll.passive="handlePanelScroll('detail')"
+        >
           <MediaDetail
             v-if="detailItemForRender"
             v-show="isDetailOpen"
@@ -317,10 +328,22 @@ const mpcBeConnected = ref(false)
 const resumePositions = ref<Record<string, number>>({})
 const searchQuery = ref(getRouteSearchQuery())
 const searchReturnPath = ref<string | null>(null)
+const browsePanelRef = ref<HTMLElement | null>(null)
+const detailPanelRef = ref<HTMLElement | null>(null)
+const browsePanelScrollTop = ref(0)
+const detailPanelScrollTop = ref(0)
 const MPC_BE_OPENING_GRACE_MS = 4000
 const mpcBeOpeningUntil = ref(0)
 let mpcBePollTimer: number | null = null
 
+function handlePanelScroll(scope: "browse" | "detail") {
+  if (scope === "browse") {
+    browsePanelScrollTop.value = browsePanelRef.value?.scrollTop || 0
+    return
+  }
+  detailPanelScrollTop.value = detailPanelRef.value?.scrollTop || 0
+}
+
 function isMpcFamilySelected(): boolean {
   // Empty port means Web UI is disabled
   if (settings.playerMpcPort === null) return false
@@ -620,6 +643,8 @@ function handleEscapeKey(event: KeyboardEvent) {
 onMounted(() => {
   void refreshPlayerStatus()
   void refreshResumePositions()
+  browsePanelScrollTop.value = browsePanelRef.value?.scrollTop || 0
+  detailPanelScrollTop.value = detailPanelRef.value?.scrollTop || 0
   setActiveNavigationScope(isDetailOpen.value ? "detail" : "browse")
   document.addEventListener("keydown", handleEscapeKey)
   window.addEventListener("mediahive:gamepad-action", onGamepadAction as EventListener)
@@ -707,6 +732,20 @@ const isDetailOpen = computed(() => selectedItem.value !== null)
 const lastDetailItem = ref<MediaItem | null>(null)
 const detailItemForRender = computed(() => selectedItem.value ?? lastDetailItem.value)
 
+const activePanelScrollTop = computed(() => {
+  if (loading.value || error.value) return 0
+  return isDetailOpen.value ? detailPanelScrollTop.value : browsePanelScrollTop.value
+})
+
+const headerStyle = computed(() => {
+  if (route.path === "/settings") {
+    return {}
+  }
+  return {
+    transform: `translateY(${-activePanelScrollTop.value}px)`,
+  }
+})
+
 watch(selectedItem, (item) => {
   if (item) {
     lastDetailItem.value = item
@@ -1317,7 +1356,9 @@ async function handleOpenFolder(folderPath: string, explicitRootId?: string | nu
 
 <style scoped>
 .app {
+  height: 100vh;
   min-height: 100vh;
+  overflow: hidden;
 }
 
 /* Scanning progress debug overlay */
@@ -1407,12 +1448,14 @@ async function handleOpenFolder(folderPath: string, explicitRootId?: string | nu
 
 .page-slider {
   width: 100vw;
-  overflow-x: hidden;
+  height: 100vh;
+  overflow: hidden;
 }
 
 .page-slider-track {
   display: flex;
   width: 200vw;
+  height: 100vh;
   transition: transform 420ms cubic-bezier(0.22, 0.61, 0.36, 1);
   will-change: transform;
 }
@@ -1425,6 +1468,11 @@ async function handleOpenFolder(folderPath: string, explicitRootId?: string | nu
   flex: 0 0 100vw;
   width: 100vw;
   min-width: 100vw;
+  height: 100vh;
+  overflow-y: auto;
+  overflow-x: hidden;
+  overscroll-behavior: contain;
+  -webkit-overflow-scrolling: touch;
 }
 
 .page-slider-detail-panel {

frontend/src/composables/useKeyboardNavigation.ts

@@ -387,26 +387,39 @@ function handleSyncedRowResize() {
 }
 
 function ensureElementVisibleVertically(element: HTMLElement) {
+  const scrollContainer = element.closest<HTMLElement>("[data-nav-scope]")
+  const viewportRect = scrollContainer?.getBoundingClientRect() || null
+
+  const scrollByTop = (delta: number) => {
+    if (scrollContainer) {
+      scrollContainer.scrollBy({
+        top: delta,
+        behavior: "smooth",
+      })
+      return
+    }
+    window.scrollBy({
+      top: delta,
+      behavior: "smooth",
+    })
+  }
+
   if (element.hasAttribute("data-nav-release-item")) {
     const rootStyle = window.getComputedStyle(document.documentElement)
     const headerHeight = parseFloat(rootStyle.getPropertyValue("--header-height") || "0")
     const topMargin = headerHeight + 24
     const bottomMargin = 24
     const rect = element.getBoundingClientRect()
+    const topBoundary = (viewportRect?.top || 0) + topMargin
+    const bottomBoundary = (viewportRect?.bottom || window.innerHeight) - bottomMargin
 
-    if (rect.top < topMargin) {
-      window.scrollBy({
-        top: rect.top - topMargin,
-        behavior: "smooth",
-      })
+    if (rect.top < topBoundary) {
+      scrollByTop(rect.top - topBoundary)
       return
     }
 
-    if (rect.bottom > window.innerHeight - bottomMargin) {
-      window.scrollBy({
-        top: rect.bottom - (window.innerHeight - bottomMargin),
-        behavior: "smooth",
-      })
+    if (rect.bottom > bottomBoundary) {
+      scrollByTop(rect.bottom - bottomBoundary)
     }
     return
   }
@@ -416,20 +429,16 @@ function ensureElementVisibleVertically(element: HTMLElement) {
   const topMargin = headerHeight + 24
   const bottomMargin = 24
   const rect = element.getBoundingClientRect()
+  const topBoundary = (viewportRect?.top || 0) + topMargin
+  const bottomBoundary = (viewportRect?.bottom || window.innerHeight) - bottomMargin
 
-  if (rect.top < topMargin) {
-    window.scrollBy({
-      top: rect.top - topMargin,
-      behavior: "smooth",
-    })
+  if (rect.top < topBoundary) {
+    scrollByTop(rect.top - topBoundary)
     return
   }
 
-  if (rect.bottom > window.innerHeight - bottomMargin) {
-    window.scrollBy({
-      top: rect.bottom - (window.innerHeight - bottomMargin),
-      behavior: "smooth",
-    })
+  if (rect.bottom > bottomBoundary) {
+    scrollByTop(rect.bottom - bottomBoundary)
   }
 }
 

frontend/src/styles/main.css

@@ -32,9 +32,10 @@ body {
   font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
   background-color: var(--bg-primary);
   color: var(--text-primary);
+  height: 100%;
   min-height: 100vh;
   overflow-x: hidden;
-  overflow-y: auto;
+  overflow-y: hidden;
   -webkit-font-smoothing: antialiased;
   text-align: justify;
   hyphens: auto;
@@ -54,8 +55,10 @@ html:not(.pointer-visible) * {
 }
 
 #app {
+  height: 100vh;
   min-height: 100vh;
   position: relative;
+  overflow: hidden;
 }
 
 /* Scrollbar styling */