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/toggle.tsx

@@ -6,12 +6,12 @@ import { cva, type VariantProps } from "class-variance-authority";
 import { cn } from "@/lib/utils";
 
 const toggleVariants = cva(
-  "hover:text-foreground aria-pressed:bg-muted focus-visible:border-ring focus-visible:ring-ring/50 aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive data-[state=on]:bg-muted gap-1 rounded-md text-xs font-medium transition-all [&_svg:not([class*='size-'])]:size-3.5 group/toggle hover:bg-muted inline-flex items-center justify-center whitespace-nowrap outline-none focus-visible:ring-[3px] disabled:pointer-events-none disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:shrink-0",
+  "group/toggle inline-flex items-center justify-center gap-1 whitespace-nowrap rounded-md font-medium text-xs outline-none transition-all hover:bg-muted hover:text-foreground focus-visible:border-ring focus-visible:ring-[3px] focus-visible:ring-ring/50 disabled:pointer-events-none disabled:opacity-50 aria-pressed:bg-muted aria-invalid:border-destructive aria-invalid:ring-destructive/20 data-[state=on]:bg-muted dark:aria-invalid:ring-destructive/40 [&_svg:not([class*='size-'])]:size-3.5 [&_svg]:pointer-events-none [&_svg]:shrink-0",
   {
     variants: {
       variant: {
         default: "bg-transparent",
-        outline: "border-input hover:bg-muted border bg-transparent",
+        outline: "border border-input bg-transparent hover:bg-muted",
       },
       size: {
         default: "h-7 min-w-7 px-2",