Overview

The theme is driven by Tailwind classes that map to CSS variables. Color tokens live in constants/colors.ts. Tailwind exposes them as --color-* variables and generates utility classes you use across the UI.

Token source

// constants/colors.ts
export const BaseColors = {
  highlight: '246 174 45',
  accent: '92 148 110',
  neutral: '200 183 166',
  'primary-dark': '25 19 14',
  'secondary-dark': '35 29 25',
  'primary-light': '252 243 227',
  'secondary-light': '245 228 211',
  success: '58 157 122',
  destructive: '222 82 69',
} as const;

Tokens are RGB lists. Tailwind turns them into rgb(var(--color-…)/alpha). Use classes like bg-secondary-light or text-primary-dark/90.

How Tailwind maps tokens

// tailwind.config.ts — tokens → utilities + CSS vars
import { BaseColors } from './constants/colors';

export default {
  theme: {
    extend: {
      colors: Object.fromEntries(
        Object.entries(BaseColors).map(([k, v]) => [
          k,
          `rgb(var(--color-${k}, ${v}) / <alpha-value>)`,
        ]),
      ),
    },
  },
  plugins: [
    function ({ addBase }) {
      addBase({
        ':root': Object.fromEntries(
          Object.entries(BaseColors).map(([k, v]) => [`--color-${k}`, v]),
        ),
      });
    },
  ],
};

Use in components

export function Card() {
  return (
    <div className="rounded-xl bg-secondary-light p-4 text-primary-dark/90 dark:bg-secondary-dark dark:text-primary-light">
        Themed card
    </div>
  );
}

Dark mode

<!-- Toggle the class on <html> -->
<html class="dark">
  <!-- … -->
</html>

Use dark: variants on classes. The dark class on <html> switches the palette for the whole app.

Preview theme

// tailwind.config.ts plugin (excerpt)
addBase({
  '[data-theme="preview"]': Object.fromEntries(
    Object.entries(BaseColors).map(([key]) => [
      `--color-${key}`,
      `var(--preview-color-${key})`,
    ]),
  ),
});

Wrap a preview with temporary colors:

<div
  data-theme="preview"
  style={
    {
      // override a few tokens on the fly
      ['--preview-color-highlight' as any]: '255 99 71',
      ['--preview-color-accent' as any]: '56 189 248',
    } as React.CSSProperties
  }
  className="rounded-xl bg-secondary-light p-6"
>
  Live preview
</div>

Preview mode lets you try palettes without changing the saved theme.

Screens

Define breakpoints once as tokens so you can reuse them across the app.

// constants/screens.ts
export const Screen = { 
  sm: 640,
  md: 768,
  lg: 1024,
  xl: 1280,
  '2xl': 1536
} as const;

Plug the tokens into Tailwind screens so sm:, md:, etc. use your values.

// tailwind.config.ts
screens: {
  sm: `${Screen.sm}px`,
    md: `${Screen.md}px`,
    lg: `${Screen.lg}px`,
    xl: `${Screen.xl}px`,
    '2xl': `${Screen['2xl']}px`,
}

Animations

Define keyframes and animation utilities in Tailwind.

// tailwind.config.ts (keyframes + utilities)
extend: {
  keyframes: {
    'accordion-down': { from: { height: '0' }, to: { height: 'var(--radix-accordion-content-height)' } },
    'accordion-up':   { from: { height: 'var(--radix-accordion-content-height)' }, to: { height: '0' } },
    'vote-shake':     { '0%,100%': { transform: 'translateY(0)' }, '25%': { transform: 'translateY(-2px)' }, '75%': { transform: 'translateY(2px)' } },
    'scale-pop':      { '0%': { transform: 'scale(1)' }, '30%': { transform: 'scale(1.2)' }, '60%': { transform: 'scale(0.95)' }, '100%': { transform: 'scale(1)' } },
  },
  animation: {
    'accordion-down': 'accordion-down 0.2s ease-out',
      'accordion-up': 'accordion-up 0.2s ease-out',
      'vote-shake': 'vote-shake 0.25s ease-in-out',
      'scale-pop': 'scale-pop 400ms ease-out',
  },
}

Use the animation in components with animate-* classes.

<button className="animate-scale-pop">Click</button>

The project includes tailwindcss-animate. Add keyframes in Tailwind and apply them with animate-* classes.

Global styles

Enable smooth scrolling across the app.

/* app/global.css */
html { scroll-behavior: smooth; }

Customize text selection colors using tokens.

/* app/global.css */
::selection {
  background-color: rgb(var(--color-highlight));
  color: rgb(var(--color-primary-light));
}

Add a new token

  1. Add the token to BaseColors in constants/colors.ts as an RGB string.
  2. Use it via classes like bg-your-token, text-your-token/80.
  3. If Tailwind config was changed, restart the dev server to reload.
// constants/colors.ts
export const BaseColors = {
  // existing tokens...
  brand: '12 99 210',
} as const;

Use the token in components with Tailwind classes.

<span className="text-brand/90">Brand text</span>