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design language·ledger-prism-editorial-shell

Ledger Prism Editorial Shell

A portable design language for agents: download the markdown first, then inspect the preview, tokens, and rules as needed.

Download DESIGN.md

Portable DESIGN.md source of truth for most agents and apps.

the spec

specification

philosophy
summary
A paper-led editorial operations language for dense research desks where articles, sources, charts, and review commands must coexist without becoming a generic analytics dashboard. It borrows from printed production ledgers: warm neutral sheets, ink-first hierarchy, faint ruled grids, and one vivid blue-violet prism accent used only for live selection, chart emphasis, and keyboard focus.
values
Paper before chrome: the interface should feel like a carefully ruled working sheet rather than a stack of glossy SaaS cards.Ink hierarchy: text weight, size, case, and line rules establish order before color is allowed to intervene.Keyboard-first clarity: active rows, command palettes, focus states, and review queues must be unmistakable at speed.Data restraint: charts use a reduced blue-violet family with neutral comparison marks so editorial meaning is not diluted by rainbow coding.Authored density: dense modules are balanced by one spacious reading pane and deliberate marginal gutters.Accessibility as craft: accent color is paired with shape, weight, and label changes rather than being the sole cue.
anti-values
×No generic SaaS analytics tiles, pastel metric cards, glass panels, or gradient call-to-action buttons.×No rainbow data palettes; secondary data marks must be neutral or belong to the same blue-violet family.×No decorative paper nostalgia such as torn edges, stickers, emojis, or faux hand-drawn embellishment.×No default browser controls or unstyled tables; every interactive element belongs to the ledger system.
tokens
borders4 items
accent width
2px
character
Borders are ink hairlines expressed with rgba(21,20,17,0.08); emphasis uses full 2px outlines or separate square markers, never one-sided colored borders on rounded panels.
default width
1px
style
solid
colors12 items
accent
#2447D8
background
#FBFAF4
border
#151411
error
#A9443B
info
#2F5BFF
muted
#6F6A60
primary
#2F5BFF
secondary
#6D5BFF
success
#3F7454
surface
#FFFDF7
text
#151411
warning
#9A6A18
motion3 items
duration
160ms
easing
cubic-bezier(0.2, 0, 0.1, 1)
philosophy
Motion feels like an editorial desk responding to key commands: fast focus rings, slight row translation on hover, and no bouncy or decorative transitions.
radii5 items
full
9999px
lg
16px
md
16px
none
0
sm
16px
shadows3 items
lg
0 32px 90px rgba(21,20,17,0.16)
md
0 18px 50px rgba(21,20,17,0.12)
sm
0 1px 0 rgba(21,20,17,0.08)
spacing2 items
base
8px
scale
4, 8, 12, 16, 24, 32, 48, 64, 96
surfaces3 items
bg pattern
Page background uses two repeating-linear-gradient layers: 64px vertical columns and 28px baseline rows, both extremely muted.
card style
Flat 16px paper panels, 1px rgba(21,20,17,0.08) borders, compact headings, and no color fill unless selected.
treatment
Warm paper surfaces with a faint ledger grid made from linear-gradient rules at rgba(21,20,17,0.045).
typography8 items
base size
16px
body font
Albert Sans
google fonts url
https://fonts.googleapis.com/css2?family=Albert+Sans:wght@400;500;600;700&family=DM+Mono:wght@400;500&family=STIX+Two+Text:wght@500;600;700&display=swap
heading font
STIX Two Text
letter spacing
-0.02em
line height
1.55
mono font
DM Mono
scale ratio
1.25
rules
composition
Use a production-desk composition with one dominant reading pane, a denser source ledger, a slim navigation rail, and a right inspector. Avoid equal cards; panels must differ in width, density, and visual tempo. Preserve a broad paper margin around the whole shell and let the grid continue behind panels so the system feels ruled rather than boxed.
density
Density is intentionally mixed: the source ledger and inspector are compact, while the article pane has wider line length, 48px internal breathing room, and a large note field. Tight 4-8px clusters sit inside modules, while unrelated zones separate by 64-96px on desktop.
hierarchy
Start hierarchy with type: STIX Two Text for editorial titles at tight leading, Albert Sans for all operative UI, and DM Mono for keyboard hints, timestamps, counts, and command syntax. Color only marks live state. Large text uses -0.035em tracking and body/control text uses -0.02em tracking.
signature patterns
Ledger-grid paper: repeating-linear-gradient column and baseline rules remain visible in the page and inside selected panels at very low opacity.Prism focus marks: active controls receive a full 2px blue-violet outline plus a small square marker so state is not communicated by color alone.Command-strip navigation: keyboard shortcuts appear as mono black-on-paper capsules aligned to commands, rows, and toolbar actions.Reduced chart family: bar charts and sparklines use one vivid blue-violet family with neutral ink comparison lines and labeled values.
layout
breakpoints
desktop >= 1200px uses four app regions; tablet 760px-1199px collapses inspector below the reader and keeps the ledger beside it; mobile < 760px stacks rail, reader, ledger, and inspector with horizontal command chips.
density

Use dense source and command areas only when paired with a calmer editorial surface so the screen reads as a working desk rather than a wall of widgets.

grid
Desktop uses a 56px rail, a 340px ledger column, a minmax 420px editorial reading pane, and a 300px inspector inside a 24px page gutter; columns are separated by 16px gaps over a visible 64px ledger grid.
responsive
At tablet and mobile sizes, preserve the same hierarchy by moving the inspector after the reading pane, converting the rail to a top strip, and keeping tables horizontally legible through compact rows rather than shrinking text below 15px.
whitespace

Whitespace ranges from 4px row metadata gaps to 96px page-level breathing zones; the reader pane receives the largest padding while ledgers remain compact.

guidance
do
  • Use warm neutral foundations, ink text, and muted gridlines before introducing blue-violet accent color.
  • Make the active state visible through full outlines, square markers, text weight, and command labels, not color alone.
  • Keep charts to a single accent family with neutral comparison marks and directly labeled values.
  • Use serif display type only for editorial object titles and major reading moments; keep operational controls in the sans face.
  • Vary density deliberately: compact ledgers and inspectors must sit beside a calmer reading panel.
  • Style all buttons, inputs, tabs, progress bars, tables, and command palette items with the same ruled-paper grammar.
  • Maintain WCAG AA contrast for text and focus states, with body copy at 15px or larger and touch targets near 44px on mobile.
  • Let near-invisible borders and printed rules do separation work before shadows or filled backgrounds.
avoid
  • Do not use generic SaaS metric cards, colorful dashboards, CRM layouts, or vague analytics modules.
  • Do not add a third accent hue; status colors should be rare and semantic, not part of the brand palette.
  • Do not combine one-sided colored borders with rounded panels; use a separate square marker or full outline instead.
  • Do not use gradients, glassmorphism, pastel panels, emoji, stickers, or faux notebook decoration.
  • Do not center all panels or make every card equal width and weight.
  • Do not rely on opacity-only hover states; include border, transform, or color shifts with clear focus treatment.
  • Do not shrink text below accessibility thresholds to force density.
  • Do not hide the grid everywhere; the muted ledger rule is the language signature.
katagami spec
# Ledger Prism Editorial Shell

## Philosophy

A paper-led editorial operations language for dense research desks where articles, sources, charts, and review commands must coexist without becoming a generic analytics dashboard. It borrows from printed production ledgers: warm neutral sheets, ink-first hierarchy, faint ruled grids, and one vivid blue-violet prism accent used only for live selection, chart emphasis, and keyboard focus.

### Values

- Paper before chrome: the interface should feel like a carefully ruled working sheet rather than a stack of glossy SaaS cards.
- Ink hierarchy: text weight, size, case, and line rules establish order before color is allowed to intervene.
- Keyboard-first clarity: active rows, command palettes, focus states, and review queues must be unmistakable at speed.
- Data restraint: charts use a reduced blue-violet family with neutral comparison marks so editorial meaning is not diluted by rainbow coding.
- Authored density: dense modules are balanced by one spacious reading pane and deliberate marginal gutters.
- Accessibility as craft: accent color is paired with shape, weight, and label changes rather than being the sole cue.

### Anti-Values

- No generic SaaS analytics tiles, pastel metric cards, glass panels, or gradient call-to-action buttons.
- No rainbow data palettes; secondary data marks must be neutral or belong to the same blue-violet family.
- No decorative paper nostalgia such as torn edges, stickers, emojis, or faux hand-drawn embellishment.
- No default browser controls or unstyled tables; every interactive element belongs to the ledger system.

### Visual Character

- Use a warm paper page background with ivory panels, overlaid by repeating 1px horizontal and vertical grid rules at low black opacity.
- Build the shell as an asymmetric editorial desk: narrow left rail, dense source ledger, oversized reading pane, and a compact right inspector.
- Apply ink-like hierarchy with serif display titles, sans functional body text, uppercase micro labels, and mono command hints all tracked at -0.02em or tighter.
- Limit chroma to a single blue-violet prism family used for active rows, chart bars, focus rings, and command palette selection states.
- Use flat 16px rounded paper panels with near-invisible borders and no decorative shadows except a subtle ink lift on the command palette.

## Tokens

### Borders

- **Accent Width**: 2px
- **Character**: Borders are ink hairlines expressed with rgba(21,20,17,0.08); emphasis uses full 2px outlines or separate square markers, never one-sided colored borders on rounded panels.
- **Default Width**: 1px
- **Style**: solid

### Colors

| Name | Value |
|------|-------|
| accent | `#2447D8` |
| background | `#FBFAF4` |
| border | `#151411` |
| error | `#A9443B` |
| info | `#2F5BFF` |
| muted | `#6F6A60` |
| primary | `#2F5BFF` |
| secondary | `#6D5BFF` |
| success | `#3F7454` |
| surface | `#FFFDF7` |
| text | `#151411` |
| warning | `#9A6A18` |

### Motion

- **Duration**: 160ms
- **Easing**: cubic-bezier(0.2, 0, 0.1, 1)
- **Philosophy**: Motion feels like an editorial desk responding to key commands: fast focus rings, slight row translation on hover, and no bouncy or decorative transitions.

### Radii

- **Full**: 9999px
- **Lg**: 16px
- **Md**: 16px
- **None**: 0
- **Sm**: 16px

### Shadows

- **Lg**: 0 32px 90px rgba(21,20,17,0.16)
- **Md**: 0 18px 50px rgba(21,20,17,0.12)
- **Sm**: 0 1px 0 rgba(21,20,17,0.08)

### Spacing

- **Base**: 8px
- **Scale**: [4,8,12,16,24,32,48,64,96]

### Surfaces

- **Bg Pattern**: Page background uses two repeating-linear-gradient layers: 64px vertical columns and 28px baseline rows, both extremely muted.
- **Card Style**: Flat 16px paper panels, 1px rgba(21,20,17,0.08) borders, compact headings, and no color fill unless selected.
- **Treatment**: Warm paper surfaces with a faint ledger grid made from linear-gradient rules at rgba(21,20,17,0.045).

### Typography

- **Base Size**: 16px
- **Body Font**: Albert Sans
- **Google Fonts Url**: https://fonts.googleapis.com/css2?family=Albert+Sans:wght@400;500;600;700&family=DM+Mono:wght@400;500&family=STIX+Two+Text:wght@500;600;700&display=swap
- **Heading Font**: STIX Two Text
- **Letter Spacing**: -0.02em
- **Line Height**: 1.55
- **Mono Font**: DM Mono
- **Scale Ratio**: 1.25

## Rules

### Composition

Use a production-desk composition with one dominant reading pane, a denser source ledger, a slim navigation rail, and a right inspector. Avoid equal cards; panels must differ in width, density, and visual tempo. Preserve a broad paper margin around the whole shell and let the grid continue behind panels so the system feels ruled rather than boxed.

### Density

Density is intentionally mixed: the source ledger and inspector are compact, while the article pane has wider line length, 48px internal breathing room, and a large note field. Tight 4-8px clusters sit inside modules, while unrelated zones separate by 64-96px on desktop.

### Hierarchy

Start hierarchy with type: STIX Two Text for editorial titles at tight leading, Albert Sans for all operative UI, and DM Mono for keyboard hints, timestamps, counts, and command syntax. Color only marks live state. Large text uses -0.035em tracking and body/control text uses -0.02em tracking.

### Signature Patterns

- Ledger-grid paper: repeating-linear-gradient column and baseline rules remain visible in the page and inside selected panels at very low opacity.
- Prism focus marks: active controls receive a full 2px blue-violet outline plus a small square marker so state is not communicated by color alone.
- Command-strip navigation: keyboard shortcuts appear as mono black-on-paper capsules aligned to commands, rows, and toolbar actions.
- Reduced chart family: bar charts and sparklines use one vivid blue-violet family with neutral ink comparison lines and labeled values.

## Layout

### Breakpoints

desktop >= 1200px uses four app regions; tablet 760px-1199px collapses inspector below the reader and keeps the ledger beside it; mobile < 760px stacks rail, reader, ledger, and inspector with horizontal command chips.

### Density

Use dense source and command areas only when paired with a calmer editorial surface so the screen reads as a working desk rather than a wall of widgets.

### Grid

Desktop uses a 56px rail, a 340px ledger column, a minmax 420px editorial reading pane, and a 300px inspector inside a 24px page gutter; columns are separated by 16px gaps over a visible 64px ledger grid.

### Responsive

At tablet and mobile sizes, preserve the same hierarchy by moving the inspector after the reading pane, converting the rail to a top strip, and keeping tables horizontally legible through compact rows rather than shrinking text below 15px.

### Whitespace

Whitespace ranges from 4px row metadata gaps to 96px page-level breathing zones; the reader pane receives the largest padding while ledgers remain compact.

## Guidance

### Do

- Use warm neutral foundations, ink text, and muted gridlines before introducing blue-violet accent color.
- Make the active state visible through full outlines, square markers, text weight, and command labels, not color alone.
- Keep charts to a single accent family with neutral comparison marks and directly labeled values.
- Use serif display type only for editorial object titles and major reading moments; keep operational controls in the sans face.
- Vary density deliberately: compact ledgers and inspectors must sit beside a calmer reading panel.
- Style all buttons, inputs, tabs, progress bars, tables, and command palette items with the same ruled-paper grammar.
- Maintain WCAG AA contrast for text and focus states, with body copy at 15px or larger and touch targets near 44px on mobile.
- Let near-invisible borders and printed rules do separation work before shadows or filled backgrounds.

### Don't

- Do not use generic SaaS metric cards, colorful dashboards, CRM layouts, or vague analytics modules.
- Do not add a third accent hue; status colors should be rare and semantic, not part of the brand palette.
- Do not combine one-sided colored borders with rounded panels; use a separate square marker or full outline instead.
- Do not use gradients, glassmorphism, pastel panels, emoji, stickers, or faux notebook decoration.
- Do not center all panels or make every card equal width and weight.
- Do not rely on opacity-only hover states; include border, transform, or color shifts with clear focus treatment.
- Do not shrink text below accessibility thresholds to force density.
- Do not hide the grid everywhere; the muted ledger rule is the language signature.

### Accessibility

Primary text on paper exceeds AA contrast; accent blue is used against white or paired with dark text, outlines, labels, and markers. Focus states use 2px outlines with offset. Data colors are directly labeled and never rely on hue alone.

### Usage Context

Best for editorial production desks, research review systems, publishing operations, regulatory commentary tools, source triage, and keyboard-first command interfaces where dense data and long-form reading meet.
DESIGN.md
---
version: "alpha"
name: "Ledger Prism Editorial Shell"
description: "Agent-curated design language exported from Katagami as DESIGN.md."
colors:
  accent: "#2447D8"
  background: "#FBFAF4"
  border: "#151411"
  error: "#A9443B"
  info: "#2F5BFF"
  muted: "#6F6A60"
  primary: "#2F5BFF"
  secondary: "#6D5BFF"
  success: "#3F7454"
  surface: "#FFFDF7"
  text: "#151411"
  warning: "#9A6A18"
typography:
  headline-lg:
    fontFamily: "STIX Two Text"
    fontSize: "1.953rem"
    fontWeight: 700
    lineHeight: 1.1
    letterSpacing: "-0.02em"
  headline-md:
    fontFamily: "STIX Two Text"
    fontSize: "1.563rem"
    fontWeight: 600
    lineHeight: 1.15
    letterSpacing: "-0.02em"
  body-md:
    fontFamily: "Albert Sans"
    fontSize: "16px"
    fontWeight: 400
    lineHeight: 1.55
    letterSpacing: "-0.02em"
  label-md:
    fontFamily: "DM Mono"
    fontSize: "0.75rem"
    fontWeight: 600
    lineHeight: 1
    letterSpacing: "0.08em"
rounded:
  full: "9999px"
  lg: "16px"
  md: "16px"
  none: "0px"
  sm: "16px"
spacing:
  base: "8px"
  xs: "4px"
  sm: "8px"
  md: "12px"
  lg: "16px"
  xl: "24px"
  2xl: "32px"
  3xl: "48px"
  4xl: "64px"
  step-8: "96px"
components:
  color-reference-accent:
    backgroundColor: "{colors.accent}"
  color-reference-background:
    backgroundColor: "{colors.background}"
  color-reference-border:
    backgroundColor: "{colors.border}"
  color-reference-error:
    backgroundColor: "{colors.error}"
  color-reference-info:
    backgroundColor: "{colors.info}"
  color-reference-muted:
    backgroundColor: "{colors.muted}"
  color-reference-primary:
    backgroundColor: "{colors.primary}"
  color-reference-secondary:
    backgroundColor: "{colors.secondary}"
  color-reference-success:
    backgroundColor: "{colors.success}"
  color-reference-surface:
    backgroundColor: "{colors.surface}"
  color-reference-text:
    backgroundColor: "{colors.text}"
  color-reference-warning:
    backgroundColor: "{colors.warning}"
  button-primary:
    backgroundColor: "{colors.primary}"
    textColor: "#ffffff"
    typography: "{typography.label-md}"
    rounded: "{rounded.md}"
    padding: "{spacing.md}"
  card-surface:
    backgroundColor: "{colors.surface}"
    textColor: "{colors.text}"
    rounded: "{rounded.md}"
    padding: "{spacing.md}"
  input-default:
    backgroundColor: "{colors.surface}"
    textColor: "{colors.text}"
    rounded: "{rounded.md}"
    height: "44px"
---

# Ledger Prism Editorial Shell

## Overview

A paper-led editorial operations language for dense research desks where articles, sources, charts, and review commands must coexist without becoming a generic analytics dashboard. It borrows from printed production ledgers: warm neutral sheets, ink-first hierarchy, faint ruled grids, and one vivid blue-violet prism accent used only for live selection, chart emphasis, and keyboard focus.

### Values

- Paper before chrome: the interface should feel like a carefully ruled working sheet rather than a stack of glossy SaaS cards.
- Ink hierarchy: text weight, size, case, and line rules establish order before color is allowed to intervene.
- Keyboard-first clarity: active rows, command palettes, focus states, and review queues must be unmistakable at speed.
- Data restraint: charts use a reduced blue-violet family with neutral comparison marks so editorial meaning is not diluted by rainbow coding.
- Authored density: dense modules are balanced by one spacious reading pane and deliberate marginal gutters.
- Accessibility as craft: accent color is paired with shape, weight, and label changes rather than being the sole cue.

### Anti-Values

- No generic SaaS analytics tiles, pastel metric cards, glass panels, or gradient call-to-action buttons.
- No rainbow data palettes; secondary data marks must be neutral or belong to the same blue-violet family.
- No decorative paper nostalgia such as torn edges, stickers, emojis, or faux hand-drawn embellishment.
- No default browser controls or unstyled tables; every interactive element belongs to the ledger system.

### Visual Character

- Use a warm paper page background with ivory panels, overlaid by repeating 1px horizontal and vertical grid rules at low black opacity.
- Build the shell as an asymmetric editorial desk: narrow left rail, dense source ledger, oversized reading pane, and a compact right inspector.
- Apply ink-like hierarchy with serif display titles, sans functional body text, uppercase micro labels, and mono command hints all tracked at -0.02em or tighter.
- Limit chroma to a single blue-violet prism family used for active rows, chart bars, focus rings, and command palette selection states.
- Use flat 16px rounded paper panels with near-invisible borders and no decorative shadows except a subtle ink lift on the command palette.

## Colors

Use the YAML color tokens as the normative palette. The prose below names the roles agents should preserve when generating UI.

| Token | Value |
|-------|-------|
| accent | `#2447D8` |
| background | `#FBFAF4` |
| border | `#151411` |
| error | `#A9443B` |
| info | `#2F5BFF` |
| muted | `#6F6A60` |
| primary | `#2F5BFF` |
| secondary | `#6D5BFF` |
| success | `#3F7454` |
| surface | `#FFFDF7` |
| text | `#151411` |
| warning | `#9A6A18` |

## Typography

- **Headline-Lg**: STIX Two Text, 1.953rem, weight 700, line-height 1.1.
- **Headline-Md**: STIX Two Text, 1.563rem, weight 600, line-height 1.15.
- **Body-Md**: Albert Sans, 16px, weight 400, line-height 1.55.
- **Label-Md**: DM Mono, 0.75rem, weight 600, line-height 1.

## Layout

### Spacing Tokens

- **Base**: `8px`
- **Xs**: `4px`
- **Sm**: `8px`
- **Md**: `12px`
- **Lg**: `16px`
- **Xl**: `24px`
- **2xl**: `32px`
- **3xl**: `48px`
- **4xl**: `64px`
- **Step-8**: `96px`

### Breakpoints

desktop >= 1200px uses four app regions; tablet 760px-1199px collapses inspector below the reader and keeps the ledger beside it; mobile < 760px stacks rail, reader, ledger, and inspector with horizontal command chips.

### Density

Use dense source and command areas only when paired with a calmer editorial surface so the screen reads as a working desk rather than a wall of widgets.

### Grid

Desktop uses a 56px rail, a 340px ledger column, a minmax 420px editorial reading pane, and a 300px inspector inside a 24px page gutter; columns are separated by 16px gaps over a visible 64px ledger grid.

### Responsive

At tablet and mobile sizes, preserve the same hierarchy by moving the inspector after the reading pane, converting the rail to a top strip, and keeping tables horizontally legible through compact rows rather than shrinking text below 15px.

### Whitespace

Whitespace ranges from 4px row metadata gaps to 96px page-level breathing zones; the reader pane receives the largest padding while ledgers remain compact.

## Elevation & Depth

### Shadows

- **Lg**: 0 32px 90px rgba(21,20,17,0.16)
- **Md**: 0 18px 50px rgba(21,20,17,0.12)
- **Sm**: 0 1px 0 rgba(21,20,17,0.08)

## Shapes

### Rounded

- **Full**: `9999px`
- **Lg**: `16px`
- **Md**: `16px`
- **None**: `0px`
- **Sm**: `16px`

### Surfaces

- **Bg Pattern**: Page background uses two repeating-linear-gradient layers: 64px vertical columns and 28px baseline rows, both extremely muted.
- **Card Style**: Flat 16px paper panels, 1px rgba(21,20,17,0.08) borders, compact headings, and no color fill unless selected.
- **Treatment**: Warm paper surfaces with a faint ledger grid made from linear-gradient rules at rgba(21,20,17,0.045).

### Borders

- **Accent Width**: 2px
- **Character**: Borders are ink hairlines expressed with rgba(21,20,17,0.08); emphasis uses full 2px outlines or separate square markers, never one-sided colored borders on rounded panels.
- **Default Width**: 1px
- **Style**: solid

## Components

### Composition

Use a production-desk composition with one dominant reading pane, a denser source ledger, a slim navigation rail, and a right inspector. Avoid equal cards; panels must differ in width, density, and visual tempo. Preserve a broad paper margin around the whole shell and let the grid continue behind panels so the system feels ruled rather than boxed.

### Density

Density is intentionally mixed: the source ledger and inspector are compact, while the article pane has wider line length, 48px internal breathing room, and a large note field. Tight 4-8px clusters sit inside modules, while unrelated zones separate by 64-96px on desktop.

### Hierarchy

Start hierarchy with type: STIX Two Text for editorial titles at tight leading, Albert Sans for all operative UI, and DM Mono for keyboard hints, timestamps, counts, and command syntax. Color only marks live state. Large text uses -0.035em tracking and body/control text uses -0.02em tracking.

### Signature Patterns

- Ledger-grid paper: repeating-linear-gradient column and baseline rules remain visible in the page and inside selected panels at very low opacity.
- Prism focus marks: active controls receive a full 2px blue-violet outline plus a small square marker so state is not communicated by color alone.
- Command-strip navigation: keyboard shortcuts appear as mono black-on-paper capsules aligned to commands, rows, and toolbar actions.
- Reduced chart family: bar charts and sparklines use one vivid blue-violet family with neutral ink comparison lines and labeled values.

## shadcn/ui Usage

When the target app uses shadcn/ui, copy DESIGN.md with shadcn instead of the plain DESIGN.md. It contains the same Katagami design-language source plus the shadcn/ui primitives, imports, theme variables, component recipes, and preview-shot guidance.

DESIGN.md with shadcn: `/language/ledger-prism-editorial-shell/DESIGN.with-shadcn.md`.

The shadcn page also exposes optional machine-readable files for automation, but the human-facing handoff is DESIGN.md with shadcn.

Install recommended primitives with `npx shadcn@latest add button card input textarea select dialog sheet tabs badge separator checkbox switch slider tooltip dropdown-menu table`.

Use these primitives in shadcn apps:
- button
- card
- input
- textarea
- select
- dialog
- sheet
- tabs
- badge
- separator
- checkbox
- switch
- slider
- tooltip
- dropdown-menu
- table

Implementation rule for agents: import shadcn primitives from `@/components/ui/*`, apply the generated CSS variables first, then compose the language-specific recipes from the companion MD. Katagami remains the source of truth; shadcn names are the implementation surface.

## Do's and Don'ts

- Do Use warm neutral foundations, ink text, and muted gridlines before introducing blue-violet accent color.
- Do Make the active state visible through full outlines, square markers, text weight, and command labels, not color alone.
- Do Keep charts to a single accent family with neutral comparison marks and directly labeled values.
- Do Use serif display type only for editorial object titles and major reading moments; keep operational controls in the sans face.
- Do Vary density deliberately: compact ledgers and inspectors must sit beside a calmer reading panel.
- Do Style all buttons, inputs, tabs, progress bars, tables, and command palette items with the same ruled-paper grammar.
- Do Maintain WCAG AA contrast for text and focus states, with body copy at 15px or larger and touch targets near 44px on mobile.
- Do Let near-invisible borders and printed rules do separation work before shadows or filled backgrounds.
- Don't Do not use generic SaaS metric cards, colorful dashboards, CRM layouts, or vague analytics modules.
- Don't Do not add a third accent hue; status colors should be rare and semantic, not part of the brand palette.
- Don't Do not combine one-sided colored borders with rounded panels; use a separate square marker or full outline instead.
- Don't Do not use gradients, glassmorphism, pastel panels, emoji, stickers, or faux notebook decoration.
- Don't Do not center all panels or make every card equal width and weight.
- Don't Do not rely on opacity-only hover states; include border, transform, or color shifts with clear focus treatment.
- Don't Do not shrink text below accessibility thresholds to force density.
- Don't Do not hide the grid everywhere; the muted ledger rule is the language signature.

### Accessibility

Primary text on paper exceeds AA contrast; accent blue is used against white or paired with dark text, outlines, labels, and markers. Focus states use 2px outlines with offset. Data colors are directly labeled and never rely on hue alone.

### Usage Context

Best for editorial production desks, research review systems, publishing operations, regulatory commentary tools, source triage, and keyboard-first command interfaces where dense data and long-form reading meet.
shadcn/ui theme
```json
{
  "$schema": "https://ui.shadcn.com/schema/registry-item.json",
  "name": "ledger-prism-editorial-shell",
  "type": "registry:theme",
  "title": "Ledger Prism Editorial Shell shadcn Theme",
  "cssVars": {
    "theme": {},
    "light": {
      "background": "#FBFAF4",
      "foreground": "#151411",
      "card": "#FFFDF7",
      "card-foreground": "#151411",
      "popover": "#FFFDF7",
      "popover-foreground": "#151411",
      "primary": "#2F5BFF",
      "primary-foreground": "#ffffff",
      "secondary": "#6D5BFF",
      "secondary-foreground": "#ffffff",
      "muted": "#6F6A60",
      "muted-foreground": "#151411",
      "accent": "#2447D8",
      "accent-foreground": "#ffffff",
      "destructive": "#A9443B",
      "border": "#151411",
      "input": "#151411",
      "ring": "#2447D8",
      "chart-1": "#2F5BFF",
      "chart-2": "#6D5BFF",
      "chart-3": "#2447D8",
      "chart-4": "#3F7454",
      "chart-5": "#9A6A18",
      "sidebar": "#FFFDF7",
      "sidebar-foreground": "#151411",
      "sidebar-primary": "#2F5BFF",
      "sidebar-primary-foreground": "#ffffff",
      "sidebar-accent": "#2F5BFF",
      "sidebar-accent-foreground": "#ffffff",
      "sidebar-border": "#151411",
      "sidebar-ring": "#2447D8",
      "radius": "16px"
    },
    "dark": {
      "background": "#0f1115",
      "foreground": "#f8fafc",
      "card": "#181b22",
      "card-foreground": "#f8fafc",
      "popover": "#181b22",
      "popover-foreground": "#f8fafc",
      "primary": "#2F5BFF",
      "primary-foreground": "#ffffff",
      "secondary": "#252a33",
      "secondary-foreground": "#f8fafc",
      "muted": "#252a33",
      "muted-foreground": "#a1a1aa",
      "accent": "#2447D8",
      "accent-foreground": "#ffffff",
      "destructive": "#A9443B",
      "border": "#303642",
      "input": "#303642",
      "ring": "#2447D8",
      "chart-1": "#2F5BFF",
      "chart-2": "#6D5BFF",
      "chart-3": "#2447D8",
      "chart-4": "#3F7454",
      "chart-5": "#9A6A18",
      "sidebar": "#181b22",
      "sidebar-foreground": "#f8fafc",
      "sidebar-primary": "#2F5BFF",
      "sidebar-primary-foreground": "#ffffff",
      "sidebar-accent": "#2447D8",
      "sidebar-accent-foreground": "#ffffff",
      "sidebar-border": "#303642",
      "sidebar-ring": "#2447D8",
      "radius": "16px"
    }
  },
  "meta": {
    "source": "katagami",
    "languageId": "ledger-prism-editorial-shell",
    "slug": "ledger-prism-editorial-shell",
    "componentManifest": [
      "button",
      "card",
      "input",
      "textarea",
      "select",
      "dialog",
      "sheet",
      "tabs",
      "badge",
      "separator",
      "checkbox",
      "switch",
      "slider",
      "tooltip",
      "dropdown-menu",
      "table"
    ],
    "installCommand": "npx shadcn@latest add button card input textarea select dialog sheet tabs badge separator checkbox switch slider tooltip dropdown-menu table",
    "nativeTokenNames": {
      "borders": [
        "accent_width",
        "character",
        "default_width",
        "style"
      ],
      "colors": [
        "accent",
        "background",
        "border",
        "error",
        "info",
        "muted",
        "primary",
        "secondary",
        "success",
        "surface",
        "text",
        "warning"
      ],
      "motion": [
        "duration",
        "easing",
        "philosophy"
      ],
      "radii": [
        "full",
        "lg",
        "md",
        "none",
        "sm"
      ],
      "shadows": [
        "lg",
        "md",
        "sm"
      ],
      "spacing": [
        "base",
        "scale"
      ],
      "surfaces": [
        "bg_pattern",
        "card_style",
        "treatment"
      ],
      "typography": [
        "base_size",
        "body_font",
        "google_fonts_url",
        "heading_font",
        "letter_spacing",
        "line_height",
        "mono_font",
        "scale_ratio"
      ]
    }
  }
}
```
in the wild

embodiments

the full element showcase
embodiment · ledger-prism-editorial-shell
DESIGN.md

at a glance

Palette

Typography

headline-lgSTIX Two Text · 31px · 700

The quick brown fox jumps

headline-mdSTIX Two Text · 25px · 600

The quick brown fox jumps

body-mdAlbert Sans · 16px · 400

The quick brown fox jumps

label-mdDM Mono · 12px · 600

The quick brown fox jumps

Components

New
Card title

Components rendered with this language’s tokens — colors, type, and rounded corners as specified.

Spacing

  • base8px
  • xs4px
  • sm8px
  • md12px
  • lg16px
  • xl24px
  • 2xl32px
  • 3xl48px
  • 4xl64px
  • step-896px

Shape

full9999px
lg16px
md16px
none0px
sm16px
shadcn/ui

implementation kit

needs agent-authored kitcompatibility fallback
shadcn compatibility only
The generated theme variables are available, but the polished shadcn component recipes and shots have not been authored by the Katagami agent yet.
fallbackprimitives render
Compatibility proof
Local shadcn-style primitives accept the generated theme variables.
primaryaccentsurfacemutedwarningerror
table rhythm
buttonok
cardok
inputok
recommendedcompatibility fallback

DESIGN.md with shadcn

Copy this when the target app uses shadcn/ui. It packages the Katagami DESIGN.md context with the install list, theme variables, component recipes, preview-shot contract, and starter TSX in one Markdown companion.

advanced implementation filesoptional machine-readable theme, CSS, TSX starter, recipes, and preview contract
shadcn add
npx shadcn@latest add button card input textarea select dialog sheet tabs badge separator checkbox switch slider tooltip dropdown-menu table
theme css
:root {
  --background: #FBFAF4;
  --foreground: #151411;
  --card: #FFFDF7;
  --card-foreground: #151411;
  --popover: #FFFDF7;
  --popover-foreground: #151411;
  --primary: #2F5BFF;
  --primary-foreground: #ffffff;
  --secondary: #6D5BFF;
  --secondary-foreground: #ffffff;
  --muted: #6F6A60;
  --muted-foreground: #151411;
  --accent: #2447D8;
  --accent-foreground: #ffffff;
  --destructive: #A9443B;
  --border: #151411;
  --input: #151411;
  --ring: #2447D8;
  --chart-1: #2F5BFF;
  --chart-2: #6D5BFF;
  --chart-3: #2447D8;
  --chart-4: #3F7454;
  --chart-5: #9A6A18;
  --sidebar: #FFFDF7;
  --sidebar-foreground: #151411;
  --sidebar-primary: #2F5BFF;
  --sidebar-primary-foreground: #ffffff;
  --sidebar-accent: #2F5BFF;
  --sidebar-accent-foreground: #ffffff;
  --sidebar-border: #151411;
  --sidebar-ring: #2447D8;
  --radius: 16px;
}

.dark {
  --background: #0f1115;
  --foreground: #f8fafc;
  --card: #181b22;
  --card-foreground: #f8fafc;
  --popover: #181b22;
  --popover-foreground: #f8fafc;
  --primary: #2F5BFF;
  --primary-foreground: #ffffff;
  --secondary: #252a33;
  --secondary-foreground: #f8fafc;
  --muted: #252a33;
  --muted-foreground: #a1a1aa;
  --accent: #2447D8;
  --accent-foreground: #ffffff;
  --destructive: #A9443B;
  --border: #303642;
  --input: #303642;
  --ring: #2447D8;
  --chart-1: #2F5BFF;
  --chart-2: #6D5BFF;
  --chart-3: #2447D8;
  --chart-4: #3F7454;
  --chart-5: #9A6A18;
  --sidebar: #181b22;
  --sidebar-foreground: #f8fafc;
  --sidebar-primary: #2F5BFF;
  --sidebar-primary-foreground: #ffffff;
  --sidebar-accent: #2447D8;
  --sidebar-accent-foreground: #ffffff;
  --sidebar-border: #303642;
  --sidebar-ring: #2447D8;
  --radius: 16px;
}
tsx starter
import { Badge } from "@/components/ui/badge";
import { Button } from "@/components/ui/button";
import {
  Card,
  CardContent,
  CardDescription,
  CardFooter,
  CardHeader,
  CardTitle,
} from "@/components/ui/card";
import { Input } from "@/components/ui/input";
import { Tabs, TabsList, TabsTrigger } from "@/components/ui/tabs";

export function LedgerPrismEditorialShellShadcnKit() {
  return (
    <section className="grid gap-4 rounded-[var(--radius)] border bg-background p-4 text-foreground">
      <div className="flex items-start justify-between gap-4">
        <div>
          <Badge variant="outline">shadcn/ui</Badge>
          <h2 className="mt-3 text-2xl font-semibold tracking-tight">Ledger Prism Editorial Shell</h2>
          <p className="mt-1 max-w-xl text-sm text-muted-foreground">
            Use the Katagami registry theme, then compose these shadcn primitives
            with the language-specific component recipes.
          </p>
        </div>
        <Button>Apply theme</Button>
      </div>

      <Tabs defaultValue="components">
        <TabsList>
          <TabsTrigger value="components">Components</TabsTrigger>
          <TabsTrigger value="states">States</TabsTrigger>
          <TabsTrigger value="export">Export</TabsTrigger>
        </TabsList>
      </Tabs>

      <Card>
        <CardHeader>
          <CardTitle>Component recipe</CardTitle>
          <CardDescription>
            Replace this starter content with the agent-authored product scene
            from components.md and preview-shots.json.
          </CardDescription>
        </CardHeader>
        <CardContent className="grid gap-3 sm:grid-cols-[1fr_auto]">
          <Input defaultValue="Tokenized shadcn surface" aria-label="Recipe name" />
          <Button variant="secondary">Preview state</Button>
        </CardContent>
        <CardFooter className="justify-between">
          <Badge>Ready</Badge>
          <Button variant="outline">Copy recipe</Button>
        </CardFooter>
      </Card>
    </section>
  );
}
theme JSONcompatibility fallback
{
  "$schema": "https://ui.shadcn.com/schema/registry-item.json",
  "name": "ledger-prism-editorial-shell",
  "type": "registry:theme",
  "title": "Ledger Prism Editorial Shell shadcn Theme",
  "cssVars": {
    "theme": {},
    "light": {
      "background": "#FBFAF4",
      "foreground": "#151411",
      "card": "#FFFDF7",
      "card-foreground": "#151411",
      "popover": "#FFFDF7",
      "popover-foreground": "#151411",
      "primary": "#2F5BFF",
      "primary-foreground": "#ffffff",
      "secondary": "#6D5BFF",
      "secondary-foreground": "#ffffff",
      "muted": "#6F6A60",
      "muted-foreground": "#151411",
      "accent": "#2447D8",
      "accent-foreground": "#ffffff",
      "destructive": "#A9443B",
      "border": "#151411",
      "input": "#151411",
      "ring": "#2447D8",
      "chart-1": "#2F5BFF",
      "chart-2": "#6D5BFF",
      "chart-3": "#2447D8",
      "chart-4": "#3F7454",
      "chart-5": "#9A6A18",
      "sidebar": "#FFFDF7",
      "sidebar-foreground": "#151411",
      "sidebar-primary": "#2F5BFF",
      "sidebar-primary-foreground": "#ffffff",
      "sidebar-accent": "#2F5BFF",
      "sidebar-accent-foreground": "#ffffff",
      "sidebar-border": "#151411",
      "sidebar-ring": "#2447D8",
      "radius": "16px"
    },
    "dark": {
      "background": "#0f1115",
      "foreground": "#f8fafc",
      "card": "#181b22",
      "card-foreground": "#f8fafc",
      "popover": "#181b22",
      "popover-foreground": "#f8fafc",
      "primary": "#2F5BFF",
      "primary-foreground": "#ffffff",
      "secondary": "#252a33",
      "secondary-foreground": "#f8fafc",
      "muted": "#252a33",
      "muted-foreground": "#a1a1aa",
      "accent": "#2447D8",
      "accent-foreground": "#ffffff",
      "destructive": "#A9443B",
      "border": "#303642",
      "input": "#303642",
      "ring": "#2447D8",
      "chart-1": "#2F5BFF",
      "chart-2": "#6D5BFF",
      "chart-3": "#2447D8",
      "chart-4": "#3F7454",
      "chart-5": "#9A6A18",
      "sidebar": "#181b22",
      "sidebar-foreground": "#f8fafc",
      "sidebar-primary": "#2F5BFF",
      "sidebar-primary-foreground": "#ffffff",
      "sidebar-accent": "#2447D8",
      "sidebar-accent-foreground": "#ffffff",
      "sidebar-border": "#303642",
      "sidebar-ring": "#2447D8",
      "radius": "16px"
    }
  },
  "meta": {
    "source": "katagami",
    "languageId": "ledger-prism-editorial-shell",
    "slug": "ledger-prism-editorial-shell",
    "componentManifest": [
      "button",
      "card",
      "input",
      "textarea",
      "select",
      "dialog",
      "sheet",
      "tabs",
      "badge",
      "separator",
      "checkbox",
      "switch",
      "slider",
      "tooltip",
      "dropdown-menu",
      "table"
    ],
    "installCommand": "npx shadcn@latest add button card input textarea select dialog sheet tabs badge separator checkbox switch slider tooltip dropdown-menu table",
    "nativeTokenNames": {
      "borders": [
        "accent_width",
        "character",
        "default_width",
        "style"
      ],
      "colors": [
        "accent",
        "background",
        "border",
        "error",
        "info",
        "muted",
        "primary",
        "secondary",
        "success",
        "surface",
        "text",
        "warning"
      ],
      "motion": [
        "duration",
        "easing",
        "philosophy"
      ],
      "radii": [
        "full",
        "lg",
        "md",
        "none",
        "sm"
      ],
      "shadows": [
        "lg",
        "md",
        "sm"
      ],
      "spacing": [
        "base",
        "scale"
      ],
      "surfaces": [
        "bg_pattern",
        "card_style",
        "treatment"
      ],
      "typography": [
        "base_size",
        "body_font",
        "google_fonts_url",
        "heading_font",
        "letter_spacing",
        "line_height",
        "mono_font",
        "scale_ratio"
      ]
    }
  }
}
component recipescompatibility fallback
# Ledger Prism Editorial Shell shadcn/ui Components

Artifact: `component-recipes-v1`
Author: `katagami-ui-projection`
Language ID: `ledger-prism-editorial-shell`
Slug: `ledger-prism-editorial-shell`

## Intent

A paper-led editorial operations language for dense research desks where articles, sources, charts, and review commands must coexist without becoming a generic analytics dashboard. It borrows from printed production ledgers: warm neutral sheets, ink-first hierarchy, faint ruled grids, and one vivid blue-violet prism accent used only for live selection, chart emphasis, and keyboard focus.

## Required primitives

- button
- card
- input
- textarea
- select
- dialog
- sheet
- tabs
- badge
- separator
- checkbox
- switch
- slider
- tooltip
- dropdown-menu
- table

Install with `npx shadcn@latest add button card input textarea select dialog sheet tabs badge separator checkbox switch slider tooltip dropdown-menu table`.

## Token cues

Colors:

{
  "accent": "#2447D8",
  "background": "#FBFAF4",
  "border": "#151411",
  "error": "#A9443B",
  "info": "#2F5BFF",
  "muted": "#6F6A60",
  "primary": "#2F5BFF",
  "secondary": "#6D5BFF",
  "success": "#3F7454",
  "surface": "#FFFDF7",
  "text": "#151411",
  "warning": "#9A6A18"
}

Typography:

{
  "base_size": "16px",
  "body_font": "Albert Sans",
  "google_fonts_url": "https://fonts.googleapis.com/css2?family=Albert+Sans:wght@400;500;600;700&family=DM+Mono:wght@400;500&family=STIX+Two+Text:wght@500;600;700&display=swap",
  "heading_font": "STIX Two Text",
  "letter_spacing": "-0.02em",
  "line_height": 1.55,
  "mono_font": "DM Mono",
  "scale_ratio": 1.25
}

## Visual character to preserve

- Use a warm paper page background with ivory panels, overlaid by repeating 1px horizontal and vertical grid rules at low black opacity.
- Build the shell as an asymmetric editorial desk: narrow left rail, dense source ledger, oversized reading pane, and a compact right inspector.
- Apply ink-like hierarchy with serif display titles, sans functional body text, uppercase micro labels, and mono command hints all tracked at -0.02em or tighter.
- Limit chroma to a single blue-violet prism family used for active rows, chart bars, focus rings, and command palette selection states.
- Use flat 16px rounded paper panels with near-invisible borders and no decorative shadows except a subtle ink lift on the command palette.

## ShadSync visual profile

{
  "family": "paper-collage",
  "material": "paper",
  "contour": "default",
  "border": "solid",
  "underlay": false,
  "grain": true,
  "stickerBadges": false,
  "motion": "lift",
  "density": "dense",
  "accents": [
    "primary",
    "accent",
    "secondary",
    "muted"
  ]
}

## Signature component recipes

### Button
Use `Button` for primary, secondary, outline, and ghost actions. Primary actions must expose the language's strongest contrast pair, while secondary and ghost actions should preserve the surface treatment instead of falling back to default neutral SaaS styling.

### Card
Use `Card`, `CardHeader`, `CardContent`, `CardFooter`, and `CardAction` as the main composition frame. Cards should demonstrate the language's surface, border, hierarchy, and density rules rather than appearing as generic rounded rectangles.

### Input and Textarea
Use `Input` and `Textarea` with visible focus rings, field labels, validation states, and the language's rhythm. Forms should show real product content, not placeholder-only controls.

### Select, Tabs, and Table
Use `Select`, `Tabs`, and `Table` to prove navigation, filtering, and dense data states. The table should show row rhythm, separators, hover/focus states, and an empty or status state when the language calls for it.

### Dialog and Sheet
Use `Dialog` for centered decisions and `Sheet` for contextual editing. Both should inherit the language's spacing, border, overlay, and motion rules.

## Preview shots

- `application-shell`: dashboard or workspace shell with navigation, cards, forms, and state badges.
- `detail-editor`: focused editing flow using input, textarea, select, switch/checkbox, dialog or sheet, and action buttons.
- `data-operations`: table-heavy operational view with tabs, dropdown menu affordances, badges, and destructive/empty states.
- Each preview shot must include a renderable `scene` payload with concrete headline, description, actions, and rows/fields/stats for the UI preview.

## Implementation contract

- Start from local `ui/src/components/ui` shadcn-style primitives; do not create a second component system.
- Apply `/katagami/shadcn/ledger-prism-editorial-shell/registry-theme.json` variables, then use these recipes for composition and state design.
- Preserve Katagami token names as source metadata; shadcn semantic names are only the export surface.
- Do: Use warm neutral foundations, ink text, and muted gridlines before introducing blue-violet accent color.; Make the active state visible through full outlines, square markers, text weight, and command labels, not color alone.; Keep charts to a single accent family with neutral comparison marks and directly labeled values.; Use serif display type only for editorial object titles and major reading moments; keep operational controls in the sans face.; Vary density deliberately: compact ledgers and inspectors must sit beside a calmer reading panel.; Style all buttons, inputs, tabs, progress bars, tables, and command palette items with the same ruled-paper grammar.; Maintain WCAG AA contrast for text and focus states, with body copy at 15px or larger and touch targets near 44px on mobile.; Let near-invisible borders and printed rules do separation work before shadows or filled backgrounds.
- Do not: Do not use generic SaaS metric cards, colorful dashboards, CRM layouts, or vague analytics modules.; Do not add a third accent hue; status colors should be rare and semantic, not part of the brand palette.; Do not combine one-sided colored borders with rounded panels; use a separate square marker or full outline instead.; Do not use gradients, glassmorphism, pastel panels, emoji, stickers, or faux notebook decoration.; Do not center all panels or make every card equal width and weight.; Do not rely on opacity-only hover states; include border, transform, or color shifts with clear focus treatment.; Do not shrink text below accessibility thresholds to force density.; Do not hide the grid everywhere; the muted ledger rule is the language signature.

## Copy-paste component example

This generated starter proves the import shape. Production Katagami agents should replace it with a language-specific product composition.

```tsx
import { Badge } from "@/components/ui/badge";
import { Button } from "@/components/ui/button";
import {
  Card,
  CardContent,
  CardDescription,
  CardFooter,
  CardHeader,
  CardTitle,
} from "@/components/ui/card";
import { Input } from "@/components/ui/input";
import { Tabs, TabsList, TabsTrigger } from "@/components/ui/tabs";

export function LedgerPrismEditorialShellShadcnKit() {
  return (
    <section className="grid gap-4 rounded-[var(--radius)] border bg-background p-4 text-foreground">
      <div className="flex items-start justify-between gap-4">
        <div>
          <Badge variant="outline">shadcn/ui</Badge>
          <h2 className="mt-3 text-2xl font-semibold tracking-tight">Ledger Prism Editorial Shell</h2>
          <p className="mt-1 max-w-xl text-sm text-muted-foreground">
            Use the Katagami registry theme, then compose these shadcn primitives
            with the language-specific component recipes.
          </p>
        </div>
        <Button>Apply theme</Button>
      </div>

      <Tabs defaultValue="components">
        <TabsList>
          <TabsTrigger value="components">Components</TabsTrigger>
          <TabsTrigger value="states">States</TabsTrigger>
          <TabsTrigger value="export">Export</TabsTrigger>
        </TabsList>
      </Tabs>

      <Card>
        <CardHeader>
          <CardTitle>Component recipe</CardTitle>
          <CardDescription>
            Replace this starter content with the agent-authored product scene
            from components.md and preview-shots.json.
          </CardDescription>
        </CardHeader>
        <CardContent className="grid gap-3 sm:grid-cols-[1fr_auto]">
          <Input defaultValue="Tokenized shadcn surface" aria-label="Recipe name" />
          <Button variant="secondary">Preview state</Button>
        </CardContent>
        <CardFooter className="justify-between">
          <Badge>Ready</Badge>
          <Button variant="outline">Copy recipe</Button>
        </CardFooter>
      </Card>
    </section>
  );
}
```

## Layout notes

{
  "breakpoints": "desktop >= 1200px uses four app regions; tablet 760px-1199px collapses inspector below the reader and keeps the ledger beside it; mobile < 760px stacks rail, reader, ledger, and inspector with horizontal command chips.",
  "density": "Use dense source and command areas only when paired with a calmer editorial surface so the screen reads as a working desk rather than a wall of widgets.",
  "grid": "Desktop uses a 56px rail, a 340px ledger column, a minmax 420px editorial reading pane, and a 300px inspector inside a 24px page gutter; columns are separated by 16px gaps over a visible 64px ledger grid.",
  "responsive": "At tablet and mobile sizes, preserve the same hierarchy by moving the inspector after the reading pane, converting the rail to a top strip, and keeping tables horizontally legible through compact rows rather than shrinking text below 15px.",
  "whitespace": "Whitespace ranges from 4px row metadata gaps to 96px page-level breathing zones; the reader pane receives the largest padding while ledgers remain compact."
}
preview shotscompatibility fallback
{
  "artifact": "katagami:shadcn-preview-shots",
  "version": "preview-shots-v1",
  "generator": "katagami-ui-compatibility-projection",
  "generatedBy": "katagami-ui-projection",
  "requiresVisualProfile": true,
  "schema": "katagami:shadcn-preview-shots/renderable-v1",
  "renderable": true,
  "language": {
    "id": "ledger-prism-editorial-shell",
    "name": "Ledger Prism Editorial Shell",
    "slug": "ledger-prism-editorial-shell"
  },
  "installCommand": "npx shadcn@latest add button card input textarea select dialog sheet tabs badge separator checkbox switch slider tooltip dropdown-menu table",
  "primitives": [
    "button",
    "card",
    "input",
    "textarea",
    "select",
    "dialog",
    "sheet",
    "tabs",
    "badge",
    "separator",
    "checkbox",
    "switch",
    "slider",
    "tooltip",
    "dropdown-menu",
    "table"
  ],
  "identityNotes": [
    "Use a warm paper page background with ivory panels, overlaid by repeating 1px horizontal and vertical grid rules at low black opacity.",
    "Build the shell as an asymmetric editorial desk: narrow left rail, dense source ledger, oversized reading pane, and a compact right inspector.",
    "Apply ink-like hierarchy with serif display titles, sans functional body text, uppercase micro labels, and mono command hints all tracked at -0.02em or tighter.",
    "Limit chroma to a single blue-violet prism family used for active rows, chart bars, focus rings, and command palette selection states.",
    "Use flat 16px rounded paper panels with near-invisible borders and no decorative shadows except a subtle ink lift on the command palette."
  ],
  "visualProfile": {
    "family": "paper-collage",
    "material": "paper",
    "contour": "default",
    "border": "solid",
    "underlay": false,
    "grain": true,
    "stickerBadges": false,
    "motion": "lift",
    "density": "dense",
    "accents": [
      "primary",
      "accent",
      "secondary",
      "muted"
    ]
  },
  "shots": [
    {
      "id": "application-shell",
      "title": "Application shell",
      "viewport": "desktop",
      "primitives": [
        "button",
        "card",
        "input",
        "select",
        "tabs",
        "badge",
        "separator",
        "table"
      ],
      "composition": "A real product workspace with navigation, summary cards, filtering controls, and one dense content region.",
      "mustShow": [
        "primary and secondary actions",
        "card hierarchy",
        "filterable state",
        "table or list density"
      ],
      "avoid": [
        "component inventory walls",
        "placeholder-only content",
        "generic rounded SaaS chrome"
      ],
      "scene": {
        "eyebrow": "workspace spread",
        "headline": "Ledger Prism Editorial Shell launch room",
        "description": "A product team workspace where navigation, filters, metrics, and dense rows carry the language's visible structure.",
        "primaryAction": "Apply theme",
        "secondaryAction": "Review states",
        "stats": [
          {
            "label": "components",
            "value": "16",
            "tone": "accent"
          },
          {
            "label": "states",
            "value": "ready"
          },
          {
            "label": "density",
            "value": "balanced",
            "tone": "warning"
          }
        ],
        "rows": [
          {
            "label": "Primary flow",
            "value": "mapped",
            "status": "active"
          },
          {
            "label": "Token coverage",
            "value": "semantic",
            "status": "synced"
          },
          {
            "label": "Responsive proof",
            "value": "queued",
            "status": "review"
          }
        ],
        "statuses": [
          "Active",
          "Synced",
          "Draft"
        ]
      }
    },
    {
      "id": "detail-editor",
      "title": "Detail editor",
      "viewport": "tablet",
      "primitives": [
        "button",
        "card",
        "input",
        "textarea",
        "select",
        "checkbox",
        "switch",
        "slider",
        "dialog",
        "sheet"
      ],
      "composition": "A focused editing flow with form fields, validation, confirmation, and a contextual side panel.",
      "mustShow": [
        "focus ring",
        "error or destructive state",
        "dialog or sheet treatment",
        "written guidance content"
      ],
      "avoid": [
        "unstyled browser controls",
        "floating cards inside cards",
        "missing labels"
      ],
      "scene": {
        "eyebrow": "editing flow",
        "headline": "Language recipe editor",
        "description": "A focused form proving labels, validation, toggles, panel rhythm, and action hierarchy.",
        "primaryAction": "Save recipe",
        "secondaryAction": "Open sheet",
        "fields": [
          {
            "label": "Component family",
            "value": "Narrative cards"
          },
          {
            "label": "State treatment",
            "value": "Visible focus + validation"
          },
          {
            "label": "Motion",
            "value": "Small lift, no opacity-only fade"
          }
        ],
        "statuses": [
          "Focus",
          "Invalid",
          "Confirmed"
        ]
      }
    },
    {
      "id": "data-operations",
      "title": "Data operations",
      "viewport": "mobile",
      "primitives": [
        "button",
        "tabs",
        "badge",
        "dropdown-menu",
        "table",
        "tooltip",
        "separator"
      ],
      "composition": "A compact operational view proving row rhythm, stacked actions, menu states, badges, and empty/destructive states.",
      "mustShow": [
        "responsive reflow",
        "dense row styling",
        "menu affordance",
        "status badge system"
      ],
      "avoid": [
        "desktop-only tables",
        "text overflow",
        "default shadcn spacing without Katagami character"
      ],
      "scene": {
        "eyebrow": "operations",
        "headline": "Compact review queue",
        "description": "A narrow viewport scene with rows, menus, tooltips, badges, and destructive affordances.",
        "primaryAction": "Resolve",
        "secondaryAction": "Filter",
        "rows": [
          {
            "label": "Button hierarchy",
            "value": "approved",
            "status": "ok"
          },
          {
            "label": "Table rhythm",
            "value": "needs pass",
            "status": "watch"
          },
          {
            "label": "Empty state",
            "value": "designed",
            "status": "done"
          }
        ],
        "statuses": [
          "Queued",
          "Blocked",
          "Done"
        ]
      }
    }
  ],
  "componentRecipes": [
    {
      "primitive": "button",
      "intent": "Prove action hierarchy, focus, disabled, and destructive states."
    },
    {
      "primitive": "card",
      "intent": "Carry the language surface, border, elevation, and density rules."
    },
    {
      "primitive": "input",
      "intent": "Show labels, focus rings, validation, and spacing rhythm."
    },
    {
      "primitive": "textarea",
      "intent": "Show longer guidance, validation copy, and writing density."
    },
    {
      "primitive": "select",
      "intent": "Show filtering, selection contrast, and menu trigger styling."
    },
    {
      "primitive": "dialog",
      "intent": "Show centered decision states and overlay treatment."
    },
    {
      "primitive": "sheet",
      "intent": "Show contextual side panels and responsive editing."
    },
    {
      "primitive": "tabs",
      "intent": "Show navigational structure and active/inactive contrast."
    },
    {
      "primitive": "badge",
      "intent": "Show compact status vocabulary and semantic colors."
    },
    {
      "primitive": "separator",
      "intent": "Show section rhythm without generic gray dividers."
    },
    {
      "primitive": "checkbox",
      "intent": "Show binary selection with visible focus and checked states."
    },
    {
      "primitive": "switch",
      "intent": "Show settings toggles and on/off contrast."
    },
    {
      "primitive": "slider",
      "intent": "Show numeric adjustment with track/thumb styling."
    },
    {
      "primitive": "tooltip",
      "intent": "Show concise explanation styling above compact controls."
    },
    {
      "primitive": "dropdown-menu",
      "intent": "Show action menus, destructive items, and grouped choices."
    },
    {
      "primitive": "table",
      "intent": "Show dense operational data, separators, row states, and responsive behavior."
    }
  ],
  "qualityRules": {
    "do": [
      "Use warm neutral foundations, ink text, and muted gridlines before introducing blue-violet accent color.",
      "Make the active state visible through full outlines, square markers, text weight, and command labels, not color alone.",
      "Keep charts to a single accent family with neutral comparison marks and directly labeled values.",
      "Use serif display type only for editorial object titles and major reading moments; keep operational controls in the sans face.",
      "Vary density deliberately: compact ledgers and inspectors must sit beside a calmer reading panel.",
      "Style all buttons, inputs, tabs, progress bars, tables, and command palette items with the same ruled-paper grammar.",
      "Maintain WCAG AA contrast for text and focus states, with body copy at 15px or larger and touch targets near 44px on mobile.",
      "Let near-invisible borders and printed rules do separation work before shadows or filled backgrounds."
    ],
    "dont": [
      "Do not use generic SaaS metric cards, colorful dashboards, CRM layouts, or vague analytics modules.",
      "Do not add a third accent hue; status colors should be rare and semantic, not part of the brand palette.",
      "Do not combine one-sided colored borders with rounded panels; use a separate square marker or full outline instead.",
      "Do not use gradients, glassmorphism, pastel panels, emoji, stickers, or faux notebook decoration.",
      "Do not center all panels or make every card equal width and weight.",
      "Do not rely on opacity-only hover states; include border, transform, or color shifts with clear focus treatment.",
      "Do not shrink text below accessibility thresholds to force density.",
      "Do not hide the grid everywhere; the muted ledger rule is the language signature."
    ]
  }
}
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