export const themeCookie = 'hpc-theme';
export const themeStorageKey = 'hpc.theme.preference';
export const themePreferences = ['light', 'dark', 'system'] as const;
export type ThemePreference = (typeof themePreferences)[number];
export type ResolvedTheme = 'light' | 'dark';
export function isThemePreference(v: unknown): v is ThemePreference {
  return typeof v === 'string' && (themePreferences as readonly string[]).includes(v);
}
export function resolveTheme(preference: ThemePreference, systemDark: boolean): ResolvedTheme {
  return preference === 'system' ? (systemDark ? 'dark' : 'light') : preference;
}
export const themeCookieAttributes = {
  path: '/',
  sameSite: 'lax' as const,
  maxAgeSeconds: 31536000,
  secureInProduction: true,
};