Methanium UI

pnpm install https://git.methanium.net/methanium/ui/releases/download/latest/methanium-ui.tgz

Import the stylesheet once, then add the provider at the application root:

import "@methanium/ui/index.css";
import { ThemeProvider } from "@methanium/ui";

<ThemeProvider>{children}</ThemeProvider>;

App Default

Vite applications can choose their initial parent theme at build time:

import { methaniumUi } from "@methanium/ui/vite";

export default defineConfig({
  plugins: [methaniumUi({ defaultThemeId: "tensamin" })],
});

The built-in parent themes are tensamin, methanium, and secret. Without the plugin or a provider override, the neutral base theme is used. Public Sans is bundled as the default typeface; users can switch to their platform's system font in the customizer.

Custom Themes

Pass a typed manifest to ThemeProvider to add themes. Presets are ordinary CSS and remain fully editable after selection.

import { BUILT_IN_THEMES, defineThemes } from "@methanium/ui";

export const themes = defineThemes([
  ...BUILT_IN_THEMES,
  {
    id: "my-theme",
    title: "My Theme",
    logo: "/themes/my-logo.svg",
    css: `:root[data-theme="my-theme"] { --primary: #ff4f91; }`,
  },
]);

Use <ThemeCustomizer /> for all theme editing. <ThemeSelector /> is its focused parent-theme selection control.

Onboarding

Every OnboardingStep requires a title; the flow owns title rendering and focus. <ThemeOnboardingPage /> applies choices immediately and prevents continuing until the user explicitly selects a theme.