Katagami Stencil Rail System
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.
specification
philosophy
tokens
borders4 items
- accent width
- 1px
- character
- Stencil-cut borders stop before corners, creating small absences rather than heavy outlines.
- default width
- 1px
- style
- solid hairline with occasional dotted anchor segments
colors12 items
motion3 items
- duration
- 160ms
- easing
- cubic-bezier(0.2, 0, 0.1, 1)
- philosophy
- Inspector sheets slide by a few pixels and opacity shifts; no bounce, scale, or ornamental flourish.
radii5 items
- full
- 9999px
- lg
- 4px
- md
- 2px
- none
- 0
- sm
- 1px
shadows3 items
- lg
- 0 24px 64px rgba(31,35,36,0.10)
- md
- 0 12px 32px rgba(31,35,36,0.07)
- sm
- 0 1px 0 rgba(31,35,36,0.04)
spacing2 items
- base
- 8px
- scale
- 4, 8, 12, 16, 24, 32, 48, 64
surfaces3 items
- bg pattern
- Subtle linear paper fibers at 3 percent opacity plus 8px baseline guides only inside reading and rail zones.
- card style
- Hairline archive panels with square corners, clipped notch pseudo-elements, and sparse internal guide rules.
- treatment
- Porcelain white base with cool blue-gray inset sheets and no decorative image pattern.
typography8 items
- base size
- 16px
- body font
- IBM Plex Sans JP
- google fonts url
- https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500&family=IBM+Plex+Sans+JP:wght@400;500;600&family=Noto+Serif+JP:wght@400;500;600;700&display=swap
- heading font
- Noto Serif JP
- letter spacing
- -0.01em
- line height
- 1.58
- mono font
- IBM Plex Mono
- scale ratio
- 1.2
rules
The screen is composed as reading plane first, narrow context rail second, inspector sheet third; rails reveal only active layers and never compete with the article.
High-density source lists and notes are acceptable when line height, 8px rhythm, and clear hairline separators keep scanning calm.
Hierarchy comes from typographic contrast, measure, indentation, guide rules, and small accent tabs rather than filled cards or oversized colored controls.
layout
>=1180px three layers; 760-1179px reading plus rail with inspector below; <760px rail becomes horizontal stencil strip and inspector stacks.
Desktop grid: minmax(560px,1fr) reading plane, 72px rail, 360px inspector with 24px gutters on an 8px baseline.
Use generous 24px section rhythm and 32px page margins while preserving tight 8px row spacing in dense lists.
guidance
- Use serif long-form columns with comfortable measure and visible paragraph anchors.
- Keep accents as strokes, tabs, micro-bars, or tiny dots with low tint backgrounds only.
- Let rails and sheets feel like precise paper overlays aligned to the reading plane.
- Use concrete archive content, citations, claims, and decisions to prove dense-context utility.
- Do not create boxed dashboard widgets, thick blue active fills, or generic SaaS sidebars.
- Do not use decorative Japanese patterns as wallpaper or obvious cultural ornament.
- Do not round everything into bubbly cards or overload the screen with pills.
- Do not let category colors become saturated backgrounds.
katagami spec
# Katagami Stencil Rail System ## Philosophy A restrained Japanese editorial workspace where dense source material is organized by a precise stencil rail rather than dashboard chrome; negative space, 1px cut lines, and quiet marginalia make context legible without decorating the reading plane. ### Values - Dense reading comfort before decoration - Context revealed through narrow rails and marginal anchors - Desaturated category accents used as information marks only - Paper-like calm with exact 4/8px spacing discipline ### Anti-Values - Boxed KPI dashboards and generic SaaS navigation chrome - Thick selection fills, bubbly cards, and decorative Japanese wallpaper motifs - Pill overload or saturated category backgrounds ### Visual Character - Three-column CSS grid with a wide serif reading plane, a 72px stencil rail, and an optional 360px inspector sheet that collapses responsively. - All accents render as 1px borders, small edge tabs, outline glyphs, dotted anchor marks, or 4-8 percent tinted strips instead of solid fills. - Cards and modules use square or 2px radii, hairline borders, inset vertical guide rules, and clipped corner notches created with pseudo-elements. - Long-form text uses a Mincho-compatible serif stack while UI labels use compact sans small caps with measured letter spacing and fixed-width citations. - Annotation anchors sit in the margin as cut-mark crosses and active rail indicators, aligning to article paragraphs on a strict 8px baseline. ## Tokens ### Borders - **Accent Width**: 1px - **Character**: Stencil-cut borders stop before corners, creating small absences rather than heavy outlines. - **Default Width**: 1px - **Style**: solid hairline with occasional dotted anchor segments ### Colors | Name | Value | |------|-------| | accent | `#B48A43` | | background | `#FCFCFA` | | border | `#D7E0E1` | | error | `#A35A4A` | | info | `#1E557A` | | muted | `#667174` | | primary | `#1E557A` | | secondary | `#7D9162` | | success | `#6F8157` | | surface | `#F2F6F7` | | text | `#1F2324` | | warning | `#B48A43` | ### Motion - **Duration**: 160ms - **Easing**: cubic-bezier(0.2, 0, 0.1, 1) - **Philosophy**: Inspector sheets slide by a few pixels and opacity shifts; no bounce, scale, or ornamental flourish. ### Radii - **Full**: 9999px - **Lg**: 4px - **Md**: 2px - **None**: 0 - **Sm**: 1px ### Shadows - **Lg**: 0 24px 64px rgba(31,35,36,0.10) - **Md**: 0 12px 32px rgba(31,35,36,0.07) - **Sm**: 0 1px 0 rgba(31,35,36,0.04) ### Spacing - **Base**: 8px - **Scale**: [4,8,12,16,24,32,48,64] ### Surfaces - **Bg Pattern**: Subtle linear paper fibers at 3 percent opacity plus 8px baseline guides only inside reading and rail zones. - **Card Style**: Hairline archive panels with square corners, clipped notch pseudo-elements, and sparse internal guide rules. - **Treatment**: Porcelain white base with cool blue-gray inset sheets and no decorative image pattern. ### Typography - **Base Size**: 16px - **Body Font**: IBM Plex Sans JP - **Google Fonts Url**: https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500&family=IBM+Plex+Sans+JP:wght@400;500;600&family=Noto+Serif+JP:wght@400;500;600;700&display=swap - **Heading Font**: Noto Serif JP - **Letter Spacing**: -0.01em - **Line Height**: 1.58 - **Mono Font**: IBM Plex Mono - **Scale Ratio**: 1.2 ## Rules ### Composition The screen is composed as reading plane first, narrow context rail second, inspector sheet third; rails reveal only active layers and never compete with the article. ### Density High-density source lists and notes are acceptable when line height, 8px rhythm, and clear hairline separators keep scanning calm. ### Hierarchy Hierarchy comes from typographic contrast, measure, indentation, guide rules, and small accent tabs rather than filled cards or oversized colored controls. ### Signature Patterns - Stencil rail modules use vertical writing-like labels, 1px active indicators, and tiny square anchor dots aligned to content paragraphs. - Katagami tabs are clipped rectangular edge markers built with border-only CSS and low-tint underlays that never become dominant fills. - Annotation cards use cut-corner pseudo-elements, margin crosshairs, and citation monospace chips with no rounded pill backgrounds. - Calm data summaries appear as micro-bars and ruled rows inside paper sheets, with matcha and ochre limited to desaturated category strokes. ## Layout ### Breakpoints >=1180px three layers; 760-1179px reading plus rail with inspector below; <760px rail becomes horizontal stencil strip and inspector stacks. ### Grid Desktop grid: minmax(560px,1fr) reading plane, 72px rail, 360px inspector with 24px gutters on an 8px baseline. ### Whitespace Use generous 24px section rhythm and 32px page margins while preserving tight 8px row spacing in dense lists. ## Guidance ### Do - Use serif long-form columns with comfortable measure and visible paragraph anchors. - Keep accents as strokes, tabs, micro-bars, or tiny dots with low tint backgrounds only. - Let rails and sheets feel like precise paper overlays aligned to the reading plane. - Use concrete archive content, citations, claims, and decisions to prove dense-context utility. ### Don't - Do not create boxed dashboard widgets, thick blue active fills, or generic SaaS sidebars. - Do not use decorative Japanese patterns as wallpaper or obvious cultural ornament. - Do not round everything into bubbly cards or overload the screen with pills. - Do not let category colors become saturated backgrounds.
DESIGN.md
---
version: "alpha"
name: "Katagami Stencil Rail System"
description: "Agent-curated design language exported from Katagami as DESIGN.md."
colors:
accent: "#B48A43"
background: "#FCFCFA"
border: "#D7E0E1"
error: "#A35A4A"
info: "#1E557A"
muted: "#667174"
primary: "#1E557A"
secondary: "#7D9162"
success: "#6F8157"
surface: "#F2F6F7"
text: "#1F2324"
warning: "#B48A43"
typography:
headline-lg:
fontFamily: "Noto Serif JP"
fontSize: "1.728rem"
fontWeight: 700
lineHeight: 1.1
letterSpacing: "-0.01em"
headline-md:
fontFamily: "Noto Serif JP"
fontSize: "1.44rem"
fontWeight: 600
lineHeight: 1.15
letterSpacing: "-0.01em"
body-md:
fontFamily: "IBM Plex Sans JP"
fontSize: "16px"
fontWeight: 400
lineHeight: 1.58
letterSpacing: "-0.01em"
label-md:
fontFamily: "IBM Plex Mono"
fontSize: "0.75rem"
fontWeight: 600
lineHeight: 1
letterSpacing: "0.08em"
rounded:
full: "9999px"
lg: "4px"
md: "2px"
none: "0px"
sm: "1px"
spacing:
base: "8px"
xs: "4px"
sm: "8px"
md: "12px"
lg: "16px"
xl: "24px"
2xl: "32px"
3xl: "48px"
4xl: "64px"
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"
---
# Katagami Stencil Rail System
## Overview
A restrained Japanese editorial workspace where dense source material is organized by a precise stencil rail rather than dashboard chrome; negative space, 1px cut lines, and quiet marginalia make context legible without decorating the reading plane.
### Values
- Dense reading comfort before decoration
- Context revealed through narrow rails and marginal anchors
- Desaturated category accents used as information marks only
- Paper-like calm with exact 4/8px spacing discipline
### Anti-Values
- Boxed KPI dashboards and generic SaaS navigation chrome
- Thick selection fills, bubbly cards, and decorative Japanese wallpaper motifs
- Pill overload or saturated category backgrounds
### Visual Character
- Three-column CSS grid with a wide serif reading plane, a 72px stencil rail, and an optional 360px inspector sheet that collapses responsively.
- All accents render as 1px borders, small edge tabs, outline glyphs, dotted anchor marks, or 4-8 percent tinted strips instead of solid fills.
- Cards and modules use square or 2px radii, hairline borders, inset vertical guide rules, and clipped corner notches created with pseudo-elements.
- Long-form text uses a Mincho-compatible serif stack while UI labels use compact sans small caps with measured letter spacing and fixed-width citations.
- Annotation anchors sit in the margin as cut-mark crosses and active rail indicators, aligning to article paragraphs on a strict 8px baseline.
## 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 | `#B48A43` |
| background | `#FCFCFA` |
| border | `#D7E0E1` |
| error | `#A35A4A` |
| info | `#1E557A` |
| muted | `#667174` |
| primary | `#1E557A` |
| secondary | `#7D9162` |
| success | `#6F8157` |
| surface | `#F2F6F7` |
| text | `#1F2324` |
| warning | `#B48A43` |
## Typography
- **Headline-Lg**: Noto Serif JP, 1.728rem, weight 700, line-height 1.1.
- **Headline-Md**: Noto Serif JP, 1.44rem, weight 600, line-height 1.15.
- **Body-Md**: IBM Plex Sans JP, 16px, weight 400, line-height 1.58.
- **Label-Md**: IBM Plex 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`
### Breakpoints
>=1180px three layers; 760-1179px reading plus rail with inspector below; <760px rail becomes horizontal stencil strip and inspector stacks.
### Grid
Desktop grid: minmax(560px,1fr) reading plane, 72px rail, 360px inspector with 24px gutters on an 8px baseline.
### Whitespace
Use generous 24px section rhythm and 32px page margins while preserving tight 8px row spacing in dense lists.
## Elevation & Depth
### Shadows
- **Lg**: 0 24px 64px rgba(31,35,36,0.10)
- **Md**: 0 12px 32px rgba(31,35,36,0.07)
- **Sm**: 0 1px 0 rgba(31,35,36,0.04)
## Shapes
### Rounded
- **Full**: `9999px`
- **Lg**: `4px`
- **Md**: `2px`
- **None**: `0px`
- **Sm**: `1px`
### Surfaces
- **Bg Pattern**: Subtle linear paper fibers at 3 percent opacity plus 8px baseline guides only inside reading and rail zones.
- **Card Style**: Hairline archive panels with square corners, clipped notch pseudo-elements, and sparse internal guide rules.
- **Treatment**: Porcelain white base with cool blue-gray inset sheets and no decorative image pattern.
### Borders
- **Accent Width**: 1px
- **Character**: Stencil-cut borders stop before corners, creating small absences rather than heavy outlines.
- **Default Width**: 1px
- **Style**: solid hairline with occasional dotted anchor segments
## Components
### Composition
The screen is composed as reading plane first, narrow context rail second, inspector sheet third; rails reveal only active layers and never compete with the article.
### Density
High-density source lists and notes are acceptable when line height, 8px rhythm, and clear hairline separators keep scanning calm.
### Hierarchy
Hierarchy comes from typographic contrast, measure, indentation, guide rules, and small accent tabs rather than filled cards or oversized colored controls.
### Signature Patterns
- Stencil rail modules use vertical writing-like labels, 1px active indicators, and tiny square anchor dots aligned to content paragraphs.
- Katagami tabs are clipped rectangular edge markers built with border-only CSS and low-tint underlays that never become dominant fills.
- Annotation cards use cut-corner pseudo-elements, margin crosshairs, and citation monospace chips with no rounded pill backgrounds.
- Calm data summaries appear as micro-bars and ruled rows inside paper sheets, with matcha and ochre limited to desaturated category strokes.
## 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/en-019ee039-d07f-7b53-bc19-4b9ffbb500de/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 serif long-form columns with comfortable measure and visible paragraph anchors.
- Do Keep accents as strokes, tabs, micro-bars, or tiny dots with low tint backgrounds only.
- Do Let rails and sheets feel like precise paper overlays aligned to the reading plane.
- Do Use concrete archive content, citations, claims, and decisions to prove dense-context utility.
- Don't Do not create boxed dashboard widgets, thick blue active fills, or generic SaaS sidebars.
- Don't Do not use decorative Japanese patterns as wallpaper or obvious cultural ornament.
- Don't Do not round everything into bubbly cards or overload the screen with pills.
- Don't Do not let category colors become saturated backgrounds.
shadcn/ui theme
```json
{
"$schema": "https://ui.shadcn.com/schema/registry-item.json",
"name": "katagami-stencil-rail-system",
"type": "registry:theme",
"title": "Katagami Stencil Rail System shadcn Theme",
"cssVars": {
"theme": {},
"light": {
"background": "#FCFCFA",
"foreground": "#1F2324",
"card": "#F2F6F7",
"card-foreground": "#1F2324",
"popover": "#F2F6F7",
"popover-foreground": "#1F2324",
"primary": "#1E557A",
"primary-foreground": "#ffffff",
"secondary": "#7D9162",
"secondary-foreground": "#ffffff",
"muted": "#667174",
"muted-foreground": "#1F2324",
"accent": "#B48A43",
"accent-foreground": "#ffffff",
"destructive": "#A35A4A",
"border": "#D7E0E1",
"input": "#D7E0E1",
"ring": "#B48A43",
"chart-1": "#1E557A",
"chart-2": "#7D9162",
"chart-3": "#B48A43",
"chart-4": "#6F8157",
"chart-5": "#B48A43",
"sidebar": "#F2F6F7",
"sidebar-foreground": "#1F2324",
"sidebar-primary": "#1E557A",
"sidebar-primary-foreground": "#ffffff",
"sidebar-accent": "#1E557A",
"sidebar-accent-foreground": "#ffffff",
"sidebar-border": "#D7E0E1",
"sidebar-ring": "#B48A43",
"radius": "2px"
},
"dark": {
"background": "#0f1115",
"foreground": "#f8fafc",
"card": "#181b22",
"card-foreground": "#f8fafc",
"popover": "#181b22",
"popover-foreground": "#f8fafc",
"primary": "#1E557A",
"primary-foreground": "#ffffff",
"secondary": "#252a33",
"secondary-foreground": "#f8fafc",
"muted": "#252a33",
"muted-foreground": "#a1a1aa",
"accent": "#B48A43",
"accent-foreground": "#ffffff",
"destructive": "#A35A4A",
"border": "#303642",
"input": "#303642",
"ring": "#B48A43",
"chart-1": "#1E557A",
"chart-2": "#7D9162",
"chart-3": "#B48A43",
"chart-4": "#6F8157",
"chart-5": "#B48A43",
"sidebar": "#181b22",
"sidebar-foreground": "#f8fafc",
"sidebar-primary": "#1E557A",
"sidebar-primary-foreground": "#ffffff",
"sidebar-accent": "#B48A43",
"sidebar-accent-foreground": "#ffffff",
"sidebar-border": "#303642",
"sidebar-ring": "#B48A43",
"radius": "2px"
}
},
"meta": {
"source": "katagami",
"languageId": "en-019ee039-d07f-7b53-bc19-4b9ffbb500de",
"slug": "katagami-stencil-rail-system",
"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"
]
}
}
}
```embodiments
at a glance
Typography
The quick brown fox jumps
The quick brown fox jumps
The quick brown fox jumps
The quick brown fox jumps
Components
Components rendered with this language’s tokens — colors, type, and rounded corners as specified.
Spacing
- base8px
- xs4px
- sm8px
- md12px
- lg16px
- xl24px
- 2xl32px
- 3xl48px
- 4xl64px
Shape
implementation kit
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
npx shadcn@latest add button card input textarea select dialog sheet tabs badge separator checkbox switch slider tooltip dropdown-menu table:root {
--background: #FCFCFA;
--foreground: #1F2324;
--card: #F2F6F7;
--card-foreground: #1F2324;
--popover: #F2F6F7;
--popover-foreground: #1F2324;
--primary: #1E557A;
--primary-foreground: #ffffff;
--secondary: #7D9162;
--secondary-foreground: #ffffff;
--muted: #667174;
--muted-foreground: #1F2324;
--accent: #B48A43;
--accent-foreground: #ffffff;
--destructive: #A35A4A;
--border: #D7E0E1;
--input: #D7E0E1;
--ring: #B48A43;
--chart-1: #1E557A;
--chart-2: #7D9162;
--chart-3: #B48A43;
--chart-4: #6F8157;
--chart-5: #B48A43;
--sidebar: #F2F6F7;
--sidebar-foreground: #1F2324;
--sidebar-primary: #1E557A;
--sidebar-primary-foreground: #ffffff;
--sidebar-accent: #1E557A;
--sidebar-accent-foreground: #ffffff;
--sidebar-border: #D7E0E1;
--sidebar-ring: #B48A43;
--radius: 2px;
}
.dark {
--background: #0f1115;
--foreground: #f8fafc;
--card: #181b22;
--card-foreground: #f8fafc;
--popover: #181b22;
--popover-foreground: #f8fafc;
--primary: #1E557A;
--primary-foreground: #ffffff;
--secondary: #252a33;
--secondary-foreground: #f8fafc;
--muted: #252a33;
--muted-foreground: #a1a1aa;
--accent: #B48A43;
--accent-foreground: #ffffff;
--destructive: #A35A4A;
--border: #303642;
--input: #303642;
--ring: #B48A43;
--chart-1: #1E557A;
--chart-2: #7D9162;
--chart-3: #B48A43;
--chart-4: #6F8157;
--chart-5: #B48A43;
--sidebar: #181b22;
--sidebar-foreground: #f8fafc;
--sidebar-primary: #1E557A;
--sidebar-primary-foreground: #ffffff;
--sidebar-accent: #B48A43;
--sidebar-accent-foreground: #ffffff;
--sidebar-border: #303642;
--sidebar-ring: #B48A43;
--radius: 2px;
}
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 KatagamiStencilRailSystemShadcnKit() {
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">Katagami Stencil Rail System</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>
);
}
{
"$schema": "https://ui.shadcn.com/schema/registry-item.json",
"name": "katagami-stencil-rail-system",
"type": "registry:theme",
"title": "Katagami Stencil Rail System shadcn Theme",
"cssVars": {
"theme": {},
"light": {
"background": "#FCFCFA",
"foreground": "#1F2324",
"card": "#F2F6F7",
"card-foreground": "#1F2324",
"popover": "#F2F6F7",
"popover-foreground": "#1F2324",
"primary": "#1E557A",
"primary-foreground": "#ffffff",
"secondary": "#7D9162",
"secondary-foreground": "#ffffff",
"muted": "#667174",
"muted-foreground": "#1F2324",
"accent": "#B48A43",
"accent-foreground": "#ffffff",
"destructive": "#A35A4A",
"border": "#D7E0E1",
"input": "#D7E0E1",
"ring": "#B48A43",
"chart-1": "#1E557A",
"chart-2": "#7D9162",
"chart-3": "#B48A43",
"chart-4": "#6F8157",
"chart-5": "#B48A43",
"sidebar": "#F2F6F7",
"sidebar-foreground": "#1F2324",
"sidebar-primary": "#1E557A",
"sidebar-primary-foreground": "#ffffff",
"sidebar-accent": "#1E557A",
"sidebar-accent-foreground": "#ffffff",
"sidebar-border": "#D7E0E1",
"sidebar-ring": "#B48A43",
"radius": "2px"
},
"dark": {
"background": "#0f1115",
"foreground": "#f8fafc",
"card": "#181b22",
"card-foreground": "#f8fafc",
"popover": "#181b22",
"popover-foreground": "#f8fafc",
"primary": "#1E557A",
"primary-foreground": "#ffffff",
"secondary": "#252a33",
"secondary-foreground": "#f8fafc",
"muted": "#252a33",
"muted-foreground": "#a1a1aa",
"accent": "#B48A43",
"accent-foreground": "#ffffff",
"destructive": "#A35A4A",
"border": "#303642",
"input": "#303642",
"ring": "#B48A43",
"chart-1": "#1E557A",
"chart-2": "#7D9162",
"chart-3": "#B48A43",
"chart-4": "#6F8157",
"chart-5": "#B48A43",
"sidebar": "#181b22",
"sidebar-foreground": "#f8fafc",
"sidebar-primary": "#1E557A",
"sidebar-primary-foreground": "#ffffff",
"sidebar-accent": "#B48A43",
"sidebar-accent-foreground": "#ffffff",
"sidebar-border": "#303642",
"sidebar-ring": "#B48A43",
"radius": "2px"
}
},
"meta": {
"source": "katagami",
"languageId": "en-019ee039-d07f-7b53-bc19-4b9ffbb500de",
"slug": "katagami-stencil-rail-system",
"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"
]
}
}
}
# Katagami Stencil Rail System shadcn/ui Components
Artifact: `component-recipes-v1`
Author: `katagami-ui-projection`
Language ID: `en-019ee039-d07f-7b53-bc19-4b9ffbb500de`
Slug: `katagami-stencil-rail-system`
## Intent
A restrained Japanese editorial workspace where dense source material is organized by a precise stencil rail rather than dashboard chrome; negative space, 1px cut lines, and quiet marginalia make context legible without decorating the reading plane.
## 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": "#B48A43",
"background": "#FCFCFA",
"border": "#D7E0E1",
"error": "#A35A4A",
"info": "#1E557A",
"muted": "#667174",
"primary": "#1E557A",
"secondary": "#7D9162",
"success": "#6F8157",
"surface": "#F2F6F7",
"text": "#1F2324",
"warning": "#B48A43"
}
Typography:
{
"base_size": "16px",
"body_font": "IBM Plex Sans JP",
"google_fonts_url": "https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500&family=IBM+Plex+Sans+JP:wght@400;500;600&family=Noto+Serif+JP:wght@400;500;600;700&display=swap",
"heading_font": "Noto Serif JP",
"letter_spacing": "-0.01em",
"line_height": 1.58,
"mono_font": "IBM Plex Mono",
"scale_ratio": 1.2
}
## Visual character to preserve
- Three-column CSS grid with a wide serif reading plane, a 72px stencil rail, and an optional 360px inspector sheet that collapses responsively.
- All accents render as 1px borders, small edge tabs, outline glyphs, dotted anchor marks, or 4-8 percent tinted strips instead of solid fills.
- Cards and modules use square or 2px radii, hairline borders, inset vertical guide rules, and clipped corner notches created with pseudo-elements.
- Long-form text uses a Mincho-compatible serif stack while UI labels use compact sans small caps with measured letter spacing and fixed-width citations.
- Annotation anchors sit in the margin as cut-mark crosses and active rail indicators, aligning to article paragraphs on a strict 8px baseline.
## ShadSync visual profile
{
"family": "paper-collage",
"material": "paper",
"contour": "pebble",
"border": "solid",
"underlay": true,
"grain": true,
"stickerBadges": false,
"motion": "still",
"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/katagami-stencil-rail-system/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 serif long-form columns with comfortable measure and visible paragraph anchors.; Keep accents as strokes, tabs, micro-bars, or tiny dots with low tint backgrounds only.; Let rails and sheets feel like precise paper overlays aligned to the reading plane.; Use concrete archive content, citations, claims, and decisions to prove dense-context utility.
- Do not: Do not create boxed dashboard widgets, thick blue active fills, or generic SaaS sidebars.; Do not use decorative Japanese patterns as wallpaper or obvious cultural ornament.; Do not round everything into bubbly cards or overload the screen with pills.; Do not let category colors become saturated backgrounds.
## 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 KatagamiStencilRailSystemShadcnKit() {
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">Katagami Stencil Rail System</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": ">=1180px three layers; 760-1179px reading plus rail with inspector below; <760px rail becomes horizontal stencil strip and inspector stacks.",
"grid": "Desktop grid: minmax(560px,1fr) reading plane, 72px rail, 360px inspector with 24px gutters on an 8px baseline.",
"whitespace": "Use generous 24px section rhythm and 32px page margins while preserving tight 8px row spacing in dense lists."
}
{
"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": "en-019ee039-d07f-7b53-bc19-4b9ffbb500de",
"name": "Katagami Stencil Rail System",
"slug": "katagami-stencil-rail-system"
},
"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": [
"Three-column CSS grid with a wide serif reading plane, a 72px stencil rail, and an optional 360px inspector sheet that collapses responsively.",
"All accents render as 1px borders, small edge tabs, outline glyphs, dotted anchor marks, or 4-8 percent tinted strips instead of solid fills.",
"Cards and modules use square or 2px radii, hairline borders, inset vertical guide rules, and clipped corner notches created with pseudo-elements.",
"Long-form text uses a Mincho-compatible serif stack while UI labels use compact sans small caps with measured letter spacing and fixed-width citations.",
"Annotation anchors sit in the margin as cut-mark crosses and active rail indicators, aligning to article paragraphs on a strict 8px baseline."
],
"visualProfile": {
"family": "paper-collage",
"material": "paper",
"contour": "pebble",
"border": "solid",
"underlay": true,
"grain": true,
"stickerBadges": false,
"motion": "still",
"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": "Katagami Stencil Rail System 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 serif long-form columns with comfortable measure and visible paragraph anchors.",
"Keep accents as strokes, tabs, micro-bars, or tiny dots with low tint backgrounds only.",
"Let rails and sheets feel like precise paper overlays aligned to the reading plane.",
"Use concrete archive content, citations, claims, and decisions to prove dense-context utility."
],
"dont": [
"Do not create boxed dashboard widgets, thick blue active fills, or generic SaaS sidebars.",
"Do not use decorative Japanese patterns as wallpaper or obvious cultural ornament.",
"Do not round everything into bubbly cards or overload the screen with pills.",
"Do not let category colors become saturated backgrounds."
]
}
}