References:

• Guide - details on token system and patterns

Overview

This codebase uses:

• Tailwind CSS with semantic design tokens via tw-colors plugin

• tailwind-variants (tv() ) for type-safe variant styling

• Rose Pine color palette (light: Dawn, dark: Moon)

Token System

Color Token Pattern

{property}-{category}-{semantic}

Text tokens:

• text-text-base

• Primary body text

• text-text-muted

• Secondary/subtle text

• text-text-link

• Interactive link color (iris purple)

• text-text-strong

• Emphasized text

Background tokens:

• bg-background-base

• Page background

• bg-background-card

• Card surfaces

• bg-background-button

• Button backgrounds

• bg-background-informative

• Info callouts

Border tokens:

• border-border-muted

• Subtle borders

• border-border-input

• Form field borders

• border-border-informative

• Info borders

Spacing & Layout

Standard Tailwind spacing scale. Use semantic sizing:

• p-4 , gap-2 , m-0

• standard spacing

• max-w-7xl

• content width constraints

Component Patterns

Pattern 1: Slots (Multi-element components)

Use when component has multiple styled children.

import { tv, VariantProps } from 'tailwind-variants'; import { classnames } from '~/core/classnames';

const Styles = tv({ slots: { root: ['flex', 'items-center', 'gap-2'], label: ['text-text-base', 'font-medium'], icon: ['text-text-muted', 'w-4', 'h-4'], }, variants: { size: { sm: { root: 'p-2', label: 'text-sm' }, md: { root: 'p-4', label: 'text-base' }, }, intent: { primary: { root: 'bg-background-button', label: 'text-text-strong' }, ghost: { root: 'bg-transparent', label: 'text-text-muted' }, }, }, defaultVariants: { size: 'md', intent: 'primary', }, });

type StyleProps = VariantProps<typeof Styles>; type Props = StyleProps & { className?: string; children: React.ReactNode; };

export function MyComponent(props: Props) { const styles = Styles({ size: props.size, intent: props.intent }); return ( <div className={classnames(styles.root(), props.className)}> <span className={styles.icon()}>*</span> <span className={styles.label()}>{props.children}</span> </div> ); }

Pattern 2: Base (Single-element components)

Use when component is a single styled element.

import { tv, VariantProps } from 'tailwind-variants'; import { classnames } from '~/core/classnames';

const Styles = tv({ base: [ 'border', 'border-border-muted', 'rounded', 'transition-colors', ], variants: { variant: { solid: 'border-2', dashed: 'border-dashed', }, }, defaultVariants: { variant: 'solid', }, });

type Props = VariantProps<typeof Styles> & { className?: string; };

export function Divider(props: Props) { const styles = Styles({ variant: props.variant }); return <hr className={classnames(styles, props.className)} />; }

Pattern 3: Compound Variants

For conditional style combinations:

const Styles = tv({ base: ['rounded', 'px-4', 'py-2'], variants: { intent: { primary: '', danger: '' }, disabled: { true: 'opacity-50 cursor-not-allowed' }, }, compoundVariants: [ { intent: 'primary', disabled: false, class: 'bg-background-button hover:bg-background-hover', }, { intent: 'danger', disabled: false, class: 'bg-red-500 hover:bg-red-600', }, ], });

Key Utilities

classnames()

Always use for merging classes safely:

import { classnames } from '~/core/classnames';

// Merges and deduplicates Tailwind classes classnames(styles.root(), props.className, isActive && 'ring-2');

Box with asChild

For polymorphic components:

import { Box } from '~/components/ds/box/Box';

<Box asChild className="text-text-link"> <a href="/path">Link styled as Box</a> </Box>

Quick Reference

Need Use

Multiple styled elements tv({ slots: { ... } })

Single styled element tv({ base: [...] })

Variant types VariantProps<typeof Styles>

Merge classes classnames(a, b, c)

Conditional variants compoundVariants: [...]

Purple accent text-text-link , text-text-strong

Muted text text-text-muted

Card background bg-background-card

Common Mistakes

• Using raw colors - Always use semantic tokens (text-text-base not text-gray-900 )

• Forgetting classnames() - Props className won't merge properly without it

• Destructuring props - Use props.x not { x } per codebase convention

• Missing VariantProps - Always type variants for IDE completion