feat(skin): add audio skins for HTML and React presets (#772)

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

packages/skins/src/default/tailwind/components/root.ts

@@ -0,0 +1,15 @@
+import { cn } from '@videojs/utils/style';
+
+export const root = cn(
+  // Layout & containment
+  'block relative isolate @container/media-root',
+  // Appearance
+  'rounded-(--media-border-radius,2rem)',
+  'font-[Inter_Variable,Inter,ui-sans-serif,system-ui,sans-serif] text-[0.8125rem] leading-normal subpixel-antialiased',
+  // Resets
+  '**:box-border **:m-0',
+  '[&_button]:font-[inherit]',
+  'motion-safe:[interpolate-size:allow-keywords]',
+  // Fullscreen
+  '[&:fullscreen]:rounded-none'
+);