export function getThemeFromDocument(): Record<string, string> {
  if (typeof document === 'undefined') return {}
  const el = document.documentElement
  const out: Record<string, string> = {}
  const theme = el.getAttribute('data-theme')
  const style = el.getAttribute('data-style')
  if (theme) out['data-theme'] = theme
  if (style) out['data-style'] = style
  return out
}