Themes for @gnist/design-system
@gnist/themes is a library containing themes, design tokens and atomic css used by @gnist/design-system,
but which can also be used on its own. It is based on vanilla-extract under the hood,
and requires an extra compilation step. See Setup for details.
CSS Layers
All styles produced by this library are wrapped in @layer gnist { }. This means consumers can override any design system style without specificity issues — unlayered styles always take precedence over layered styles.
To ensure correct layer ordering, add a @layer declaration at the top of your main CSS file (e.g. globals.css):
@layer base, gnist;
This guarantees that gnist styles take precedence over base styles. Any global or reset CSS you write should be wrapped in @layer base { } so it doesn't unintentionally override design system styles:
@layer base {
*,
*::before,
*::after {
box-sizing: border-box;
margin: 0;
}
}
Styles written outside any @layer will still take the highest precedence, allowing you to override design system styles when needed.
Development
When writing styles within the design system or gnist-app, use gnistStyle and gnistRecipe instead of vanilla-extract's style and recipe:
import { gnistStyle, gnistRecipe } from "@gnist/themes/layers.css.js";
const myClass = gnistStyle({ color: "red" });
const myRecipe = gnistRecipe({
base: { padding: "10px" },
variants: {
size: {
small: { fontSize: "12px" },
large: { fontSize: "18px" },
},
},
});
A lint rule enforces this — importing style from @vanilla-extract/css or recipe from @vanilla-extract/recipes will produce an error.
Note that globalStyle and styleVariants are not wrapped automatically and must be manually placed inside @layer when needed.
See DEVELOPMENT.md for more details.
Overview
This library exposes the following parts: themes, tokens, atoms, colors, and typography
Themes
A theme is a css class which sets a number of variables. Developers can refer to these through Tokens.
Basic usage:
import { bilholdLight } from "@gnist/themes/themes/bilholdLight.css.js";
document.body.classList.add(bilholdLight);
These themes currently exist and can be referred to in the way described above
audi
autoria
bilholdLight
brandless
cupra
dahles
gumpen
mollerBil
seat
skoda
vw
Tokens
Tokens allow you to programatically look up css variables based on our design token structure, in a type safe manner.
Example:
import { tokens } from "@gnist/themes/tokens.css.js";
const color = tokens.color.primary;
const size = tokens.size.xxl;
More usefully, these can be interpolated directly in a styled-components or vanilla-extract style.
Atoms
Atoms define a set of atomic css classes which can be looked up at runtime. This allows reuse of frequently used basic
styling across components and apps. As a bonus, things like colors, sizes and spacing are defined in terms of our design tokens.
The atoms function simply returns a string containing the css class names required.
Note: The current set of atoms is quite small. More atoms will be added as components are reimplemented.
You can also suggest useful atoms to the design system team on Slack or Teams!
Example:
import { atoms } from "@gnist/themes/atoms.css.js";
export const DangerComponent = ({ children }: PropsWithChildren) => (
<div
className={atoms({
display: "flex",
backgroundColor: "error-container", // refers to a color token
paddingX: "xs", // refers to a spacing token
})}
>
{children}
</div>
);
Colors
The colors module exports helpers for setting colors.
Box colors
boxColors simply retrieves the correct atoms for setting backgroundColor, color, and borderColor for a given color type.
E.g. for the color primary we want primary background-color, and on-primary color & border-color.
Example:
import { gnistStyle } from "@gnist/themes/layers.css.js";
import { tokens } from "@gnist/themes/tokens.css.js";
import { boxColors } from "@gnist/themes/colors.css.js";
const box = gnistStyle([
boxColors["primary-container"],
{ borderWidth: tokens.stroke.medium },
]);
Typography
The typography module exports helpers for setting correct typography styles (responsiveTypography and densityTypography),
and a css class for setting global text styles.
Responsive typography
responsiveTypography helps you retrieve css classes for the typography styles that change between small/medium/large based on viewport size.
It is a record which lets you look up the class names to set for the given typography style. It uses atoms under the hood.
Some examples:
import { gnistStyle } from "@gnist/themes/layers.css.js";
import { atoms } from "@gnist/themes/atoms.css.js";
import { responsiveTypography } from "@gnist/themes/typography.css.js"
const someStyle = gnistStyle([
atoms({ display: "flex", padding: "xs" }),
responsiveTypography.lead,
])
<div className={responsiveTypography.description}>{children}</div>
Density typography
densityTypography helps you create a recipe (for use with @vanilla-extract/recipe) for the given typography styles, which has the density: "default" | "compact" variants,
and sets the correct css classes. It uses atoms under the hood.
It is a record which, when given a typography style, returns an object with the variants prop which is suitable for merging into a recipe.
Example:
import { gnistRecipe } from "@gnist/themes/layers.css.js";
import { atoms } from "@gnist/themes/atoms.css.js";
import { densityTypography } from "@gnist/themes/typography.css.js";
const action = gnistRecipe({
base: atoms({ display: "block" }),
...densityTypography.action,
});
const className = action({ density: "default" });
Combining with other variants:
import { gnistRecipe } from "@gnist/themes/layers.css.js";
import { atoms } from "@gnist/themes/atoms.css.js";
import { densityTypography } from "@gnist/themes/typography.css.js";
const box = gnistRecipe({
base: [atoms({ display: "block" })],
variants: {
color: {
primary: boxColors["primary-container"],
secondary: boxColors["secondary-container"],
},
...densityTypography.notice.variants,
},
defaultVariants: { color: "primary", density: "default" },
});
const className = box({ color: "secondary", density: "compact" });
Global text styles
These should be added to the root element (e.g. <body>) in order to set the default typography styles and colors.
Technically, this is a list of class names.
Usually, you would also apply the theme to this same element, as variables need to be defined for the styles to work.
Example of setting both:
import { bilholdLight } from "@gnist/themes/themes.css.js";
import { globalTextStyles } from "@gnist/themes/typography.css.js";
document.body.classList.add(bilholdLight);
globalTextStyles.forEach((c) => {
document.body.classList.add(c);
});
<body className={classNames(bilholdLight, globalTextStyles)}>{children}</body>;
Setup
The library is based on vanilla-extract, which allows pre-compiling the styles to static css files. However, in our
case we defer compilation to the consuming application. This allows the consumer to compose the tokens and atoms defined
here in their own vanilla-extract based styles.
This means a compilation step for vanilla-extract must be added to your build configuration.
Vite
npm install -D @vanilla-extract/vite-plugin @vanilla-extract/esbuild-plugin
Your vite.config.ts might look like this:
import { defineConfig } from "vite";
import react from "@vitejs/plugin-react";
import { vanillaExtractPlugin } from "@vanilla-extract/vite-plugin";
import { vanillaExtractPlugin as veEsbuildPlugin } from "@vanilla-extract/esbuild-plugin";
export default defineConfig({
plugins: [react(), vanillaExtractPlugin()],
optimizeDeps: {
esbuildOptions: {
plugins: [veEsbuildPlugin({ runtime: true })],
},
},
});
Next.js
npm install -D @vanilla-extract/next-plugin
Your next.config.mjs might look like this
import { createVanillaExtractPlugin } from "@vanilla-extract/next-plugin";
const withVanillaExtract = createVanillaExtractPlugin();
const nextConfig = {
};
export default withVanillaExtract(nextConfig);
Tailwind CSS v4
For projects using Tailwind CSS v4, you can import theme CSS variables directly.
Installation
First, ensure you have Tailwind CSS v4 installed in your project. Then import the theme CSS file:
In your globals.css or main CSS file:
@import "@gnist/themes/themes/mollerBil.tailwind.css";
Or in your tailwind.config.ts:
import type { Config } from "tailwindcss";
export default {
content: ["./src/**/*.{js,ts,jsx,tsx}"],
} satisfies Config;
Available CSS Variables
The Tailwind CSS files contain all design tokens as CSS variables following Tailwind v4 conventions in an @theme block:
Colors:
--color-primary, --color-secondary, --color-tertiary
--color-primary-container, --color-on-primary
--color-error, --color-warning, --color-success, --color-info
--color-background, --color-surface
- Palette colors:
--color-primary-10, --color-primary-20, etc.
Spacing:
--spacing-none, --spacing-base, --spacing-xxs, --spacing-xs
--spacing-s, --spacing-m, --spacing-l, --spacing-xl, etc.
Typography:
- Font families:
--font-brand, --font-brand-display
- Font sizes:
--font-size-s, --font-size-base, --font-size-xl, etc.
- Font weights:
--font-weight-regular, --font-weight-medium, --font-weight-bold
Border Radius:
--radius-button, --radius-card, --radius-input
--rounded-none, --rounded-small, --rounded-full
Shadows:
--shadow-none, --shadow-low, --shadow-medium, --shadow-high
Other:
- Border widths:
--border-width-small, --border-width-medium
- Sizing:
--size-base, --size-s, --size-xl
- Opacity:
--opacity-on-hover, --opacity-on-pressed
Usage in Tailwind
Use the CSS variables in your Tailwind configuration or directly in your CSS:
.my-component {
background-color: var(--color-primary);
padding: var(--spacing-m);
border-radius: var(--radius-button);
box-shadow: var(--shadow-medium);
}
Or extend Tailwind's theme to use semantic names:
export default {
theme: {
extend: {
colors: {
primary: "var(--color-primary)",
secondary: "var(--color-secondary)",
},
spacing: {
xs: "var(--spacing-xs)",
s: "var(--spacing-s)",
},
},
},
} satisfies Config;
Note: These tokens stay in sync with the vanilla-extract themes automatically when design tokens are updated from Figma.