Polish mobile layouts, extract ExpandableText, fix image sizing

- Stack title-hero poster/metadata vertically on mobile (flex-col md:flex-row),
  switch backdrop tall breakpoint from sm to md
- Extract bio expand/collapse logic into reusable ExpandableText component;
  use it in PersonHero and TitleHero
- Fix ContinueWatchingCard image to use fill + sizes instead of fixed
  width/height to avoid layout shift
- Add fade-out gradient on genre chip scrollbar edge on mobile
- Show scaled-down ambient glow on mobile instead of hiding it entirely
- Humanize knownForDepartment labels (Acting→Actor, Directing→Director, etc.)
- Change cast member name from truncate to line-clamp-2 for wrapping
- Hide tooltip arrow via [&>:last-child]:hidden instead of color-matching it
- Apply safe-area-inset padding to HeroBanner content on notched devices

components/ui/tabs.tsx

@@ -24,7 +24,7 @@ function Tabs({
 }
 
 const tabsListVariants = cva(
-  "rounded-lg p-[3px] group-data-horizontal/tabs:h-8 data-[variant=line]:rounded-none group/tabs-list text-muted-foreground inline-flex w-fit items-center justify-center group-data-vertical/tabs:h-fit group-data-vertical/tabs:flex-col",
+  "group/tabs-list inline-flex w-fit items-center justify-center rounded-lg p-[3px] text-muted-foreground data-[variant=line]:rounded-none group-data-horizontal/tabs:h-8 group-data-vertical/tabs:h-fit group-data-vertical/tabs:flex-col",
   {
     variants: {
       variant: {
@@ -58,10 +58,10 @@ function TabsTrigger({ className, ...props }: TabsPrimitive.Tab.Props) {
     <TabsPrimitive.Tab
       data-slot="tabs-trigger"
       className={cn(
-        "focus-visible:border-ring focus-visible:ring-ring/50 focus-visible:outline-ring text-foreground/60 hover:text-foreground dark:text-muted-foreground dark:hover:text-foreground relative inline-flex h-[calc(100%-1px)] flex-1 items-center justify-center gap-1.5 rounded-md border border-transparent px-1.5 py-0.5 text-xs font-medium whitespace-nowrap transition-colors group-data-vertical/tabs:w-full group-data-vertical/tabs:justify-start group-data-vertical/tabs:py-[calc(--spacing(1.25))] focus-visible:ring-[3px] focus-visible:outline-1 disabled:pointer-events-none disabled:opacity-50 aria-disabled:pointer-events-none aria-disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-3.5",
+        "relative inline-flex h-[calc(100%-1px)] flex-1 items-center justify-center gap-1.5 whitespace-nowrap rounded-md border border-transparent px-1.5 py-0.5 font-medium text-foreground/60 text-xs transition-colors hover:text-foreground focus-visible:border-ring focus-visible:outline-1 focus-visible:outline-ring focus-visible:ring-[3px] focus-visible:ring-ring/50 disabled:pointer-events-none disabled:opacity-50 aria-disabled:pointer-events-none aria-disabled:opacity-50 group-data-vertical/tabs:w-full group-data-vertical/tabs:justify-start group-data-vertical/tabs:py-[calc(--spacing(1.25))] dark:text-muted-foreground dark:hover:text-foreground [&_svg:not([class*='size-'])]:size-3.5 [&_svg]:pointer-events-none [&_svg]:shrink-0",
         "group-data-[variant=line]/tabs-list:bg-transparent group-data-[variant=line]/tabs-list:data-active:bg-transparent dark:group-data-[variant=line]/tabs-list:data-active:border-transparent dark:group-data-[variant=line]/tabs-list:data-active:bg-transparent",
-        "data-active:bg-background dark:data-active:text-foreground dark:data-active:border-input dark:data-active:bg-input/30 data-active:text-foreground",
-        "after:bg-foreground after:absolute after:opacity-0 after:transition-opacity group-data-horizontal/tabs:after:inset-x-0 group-data-horizontal/tabs:after:bottom-[-5px] group-data-horizontal/tabs:after:h-0.5 group-data-vertical/tabs:after:inset-y-0 group-data-vertical/tabs:after:-right-1 group-data-vertical/tabs:after:w-0.5 group-data-[variant=line]/tabs-list:data-active:after:opacity-100",
+        "data-active:bg-background data-active:text-foreground dark:data-active:border-input dark:data-active:bg-input/30 dark:data-active:text-foreground",
+        "after:absolute after:bg-foreground after:opacity-0 after:transition-opacity group-data-horizontal/tabs:after:inset-x-0 group-data-vertical/tabs:after:inset-y-0 group-data-vertical/tabs:after:-right-1 group-data-horizontal/tabs:after:bottom-[-5px] group-data-horizontal/tabs:after:h-0.5 group-data-vertical/tabs:after:w-0.5 group-data-[variant=line]/tabs-list:data-active:after:opacity-100",
         className,
       )}
       {...props}