Lampblack

# Lampblack

## Philosophy

A sumi-ink editorial spread language: every screen is composed like a collectible literary plate on bone-ivory paper, where feathered smoke gradients, hairline captions, and a preserved void carry the hierarchy that loud colour usually would. Ink is the field, not the accent.

### Values

- Let the preserved void carry as much meaning as the content, holding it open as a designed element.
- Make ink behaviour visible through feathered gradients, granulation, and brush-weight type rather than chrome.
- Favour collectible print pacing: each module reads like a curated plate, not a feed cell.
- Use smoke and charcoal as atmospheric structure that directs attention across an asymmetric spread.

### Anti-Values

- Avoid bright saturated surface fills, glossy SaaS gradients, and generic rounded card grids.
- Avoid centred symmetry everywhere; rely on asymmetric balance and tense margins.
- Avoid decorative brush or glyph motifs that do not affect layout, hierarchy, or reading sequence.

### Visual Character

- An asymmetric magazine spread: one dominant ink plate, one narrow editorial column, and an open ivory void held to one side at every viewport.
- Laid-paper plates carry feathered sumi-ink gradient washes and granulated speckle instead of flat neutral fills.
- Oversized literary serif titles drive hierarchy through scale jumps, set against tiny uppercase mono marginalia.
- Each container carries a fine museum hairline interrupted by a single thick black brush-bar edge.
- Navigation and labels are small uppercase letterspaced mono captions placed like gallery wall labels.

## Tokens

### Colors

| Name | Value |
|------|-------|
| bg | `#ECE6D6` |
| surface | `#F8F3E6` |
| text | `#0B0A08` |
| muted | `#6C655A` |
| border | `#1A1714` |
| accent | `#8A5A2B` |
| on_accent | `#F8F3E6` |
| accent_2 | `#2F5A47` |
| accent_3 | `#2C3E55` |
| success | `#2F5A47` |
| warning | `#9A6A16` |
| error | `#7B1E1E` |
| info | `#2C3E55` |

### Typography

- **Base Size**: 17px
- **Body Font**: Source Serif 4
- **Heading Font**: Cormorant Garamond
- **Mono Font**: IBM Plex Mono
- **Heading Weight**: 700
- **Heading Transform**: none
- **Letter Spacing**: -0.045em
- **Scale Ratio**: 1.28
- **Line Height**: 1.58
- **Google Fonts Url**: https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@500;600;700&family=Source+Serif+4:opsz,wght@8..60,400;8..60,500;8..60,640&family=IBM+Plex+Mono:wght@400;500;600&display=swap

### Radii

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

### Shadows

- **Sm**: 0 1px 0 rgba(11,10,8,0.16)
- **Md**: 0 18px 40px rgba(11,10,8,0.16)
- **Lg**: 0 38px 90px rgba(11,10,8,0.20)

### Spacing

- **Base**: 8px
- **Scale**: [4,8,12,16,24,32,48,64,96,128]

### Surfaces

- **Treatment**: paper
- **Card Style**: warm laid-paper plates carrying feathered sumi-ink radial gradients, granulated charcoal speckle, and soft smoke veils
- **Bg Pattern**: noise

### Borders

- **Default Width**: 1px
- **Accent Width**: 10px
- **Style**: solid
- **Character**: fine museum hairlines interrupted by one thick black brush-bar edge per container; never a uniform box outline

### Motion

- **Duration**: 420ms
- **Easing**: cubic-bezier(0.19, 1, 0.22, 1)
- **Philosophy**: deliberate; settled state is the default, motion reveals on top, respects reduced-motion

## Rules

### Composition

Build each screen as a large-format literary spread: one dominant ink plate, one narrow editorial column, and a preserved open void that creates asymmetric balance at every viewport.

### Hierarchy

Use scale jumps over colour: oversized serif headlines, tiny uppercase mono labels, and feathered ink washes create a lampblack-on-bone reading sequence.

### Density

Moderately sparse and curatorial; generous gutters, isolated controls, secondary information grouped like museum wall labels.

### Signature

Layered feathered sumi-ink radial plumes (multiply-blended) sit behind major plates so atmosphere becomes the navigational field; each container pairs a museum hairline with a single thick black brush-bar edge; an empty column is held open as a designed void.

## Layout

### Grid

Desktop is a 12-column spread: a dominant 7-column ink plate, a 3-column editorial card stack, and a preserved 2-column void. Tablet compresses to 8 columns; mobile becomes a single folio column with the void dropped.

### Whitespace

Whitespace is structural: large margins, visible gutters, and an intentionally unfilled ivory void preserve ink-painting breath.

### Density

curatorial

### Responsive

Full-bleed hero spans 100vw; contained content caps and centres on ultra-wide; grids use minmax(0,1fr) and min-width:0 so they never overflow; mobile stacks to one column and hides the void.

### Breakpoints

- **Desktop**: >=1100px
- **Tablet**: 700-1099px
- **Mobile**: <700px

## Guidance

### Do

- Use lampblack ink, bone paper, and feathered ink gradients as the core visual vocabulary.
- Preserve at least one large open void in important screens and compositions.
- Let oversized serif type and the single brush-bar edge define hierarchy before adding chrome.
- Treat images, charts, and forms as curated plates with mono labels, hairlines, and atmospheric edges.
- Keep the top nav open across the header; build hierarchy with space, type, and surface.

### Don't

- Do not fill every grid cell or turn the language into a dense admin dashboard.
- Do not let the three margin inks become a surface field; keep them as highlighter-like margin strokes.
- Do not use default browser form controls; restyle every input, select, switch, radio, and checkbox.
- Do not centre everything; maintain asymmetric balance and tense margins.
- Do not stamp a decorative edge on every side of a card or nest cards.

### Accessibility

Body text 17px on high-contrast lampblack-over-bone; AA-plus contrast on plates uses paper text over ink with mix-blend difference held legible; focus states use a thick ink underline/ring; motion respects prefers-reduced-motion and the settled state renders with no JavaScript.

## Imagery Direction

### Pairs With

suiboku

### Summary

Monochrome gestural sumi ink-wash on warm bone-ivory paper. Full-frame ink plates that dissolve into a breathing ivory void; no colour enters the imagery.

### Subjects

- misted mountain ridges
- a heron or crane in flight
- single calligraphic gestures
- smoke and water studies
- bare branches over paper

### Usage

Hero and feature imagery are full-frame suiboku plates with a large negative-space void positioned for overlay text; the landing hero is a swappable background-image: var(--hero-image).

---
version: "alpha"
name: "Lampblack"
description: "Agent-curated design language exported from Katagami as DESIGN.md."
colors:
  bg: "#ECE6D6"
  surface: "#F8F3E6"
  text: "#0B0A08"
  muted: "#6C655A"
  border: "#1A1714"
  accent: "#8A5A2B"
  on_accent: "#F8F3E6"
  accent_2: "#2F5A47"
  accent_3: "#2C3E55"
  success: "#2F5A47"
  warning: "#9A6A16"
  error: "#7B1E1E"
  info: "#2C3E55"
typography:
  headline-lg:
    fontFamily: "Cormorant Garamond"
    fontSize: "2.228rem"
    fontWeight: 700
    lineHeight: 1.1
    letterSpacing: "-0.045em"
  headline-md:
    fontFamily: "Cormorant Garamond"
    fontSize: "1.741rem"
    fontWeight: 600
    lineHeight: 1.15
    letterSpacing: "-0.045em"
  body-md:
    fontFamily: "Source Serif 4"
    fontSize: "17px"
    fontWeight: 400
    lineHeight: 1.58
    letterSpacing: "-0.045em"
  label-md:
    fontFamily: "IBM Plex Mono"
    fontSize: "0.75rem"
    fontWeight: 600
    lineHeight: 1
    letterSpacing: "0.08em"
rounded:
  none: "0px"
  sm: "0px"
  md: "0px"
  lg: "0px"
  full: "9999px"
spacing:
  base: "8px"
  xs: "4px"
  sm: "8px"
  md: "12px"
  lg: "16px"
  xl: "24px"
  2xl: "32px"
  3xl: "48px"
  4xl: "64px"
  step-8: "96px"
  step-9: "128px"
components:
  color-reference-bg:
    backgroundColor: "{colors.bg}"
  color-reference-surface:
    backgroundColor: "{colors.surface}"
  color-reference-text:
    backgroundColor: "{colors.text}"
  color-reference-muted:
    backgroundColor: "{colors.muted}"
  color-reference-border:
    backgroundColor: "{colors.border}"
  color-reference-accent:
    backgroundColor: "{colors.accent}"
  color-reference-on_accent:
    backgroundColor: "{colors.on_accent}"
  color-reference-accent_2:
    backgroundColor: "{colors.accent_2}"
  color-reference-accent_3:
    backgroundColor: "{colors.accent_3}"
  color-reference-success:
    backgroundColor: "{colors.success}"
  color-reference-warning:
    backgroundColor: "{colors.warning}"
  color-reference-error:
    backgroundColor: "{colors.error}"
  color-reference-info:
    backgroundColor: "{colors.info}"
  button-primary:
    backgroundColor: "{colors.accent}"
    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"
---

# Lampblack

## Overview

A sumi-ink editorial spread language: every screen is composed like a collectible literary plate on bone-ivory paper, where feathered smoke gradients, hairline captions, and a preserved void carry the hierarchy that loud colour usually would. Ink is the field, not the accent.

### Values

- Let the preserved void carry as much meaning as the content, holding it open as a designed element.
- Make ink behaviour visible through feathered gradients, granulation, and brush-weight type rather than chrome.
- Favour collectible print pacing: each module reads like a curated plate, not a feed cell.
- Use smoke and charcoal as atmospheric structure that directs attention across an asymmetric spread.

### Anti-Values

- Avoid bright saturated surface fills, glossy SaaS gradients, and generic rounded card grids.
- Avoid centred symmetry everywhere; rely on asymmetric balance and tense margins.
- Avoid decorative brush or glyph motifs that do not affect layout, hierarchy, or reading sequence.

### Visual Character

- An asymmetric magazine spread: one dominant ink plate, one narrow editorial column, and an open ivory void held to one side at every viewport.
- Laid-paper plates carry feathered sumi-ink gradient washes and granulated speckle instead of flat neutral fills.
- Oversized literary serif titles drive hierarchy through scale jumps, set against tiny uppercase mono marginalia.
- Each container carries a fine museum hairline interrupted by a single thick black brush-bar edge.
- Navigation and labels are small uppercase letterspaced mono captions placed like gallery wall labels.

## Colors

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

| Token | Value |
|-------|-------|
| bg | `#ECE6D6` |
| surface | `#F8F3E6` |
| text | `#0B0A08` |
| muted | `#6C655A` |
| border | `#1A1714` |
| accent | `#8A5A2B` |
| on_accent | `#F8F3E6` |
| accent_2 | `#2F5A47` |
| accent_3 | `#2C3E55` |
| success | `#2F5A47` |
| warning | `#9A6A16` |
| error | `#7B1E1E` |
| info | `#2C3E55` |

## Typography

- **Headline-Lg**: Cormorant Garamond, 2.228rem, weight 700, line-height 1.1.
- **Headline-Md**: Cormorant Garamond, 1.741rem, weight 600, line-height 1.15.
- **Body-Md**: Source Serif 4, 17px, 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`
- **Step-8**: `96px`
- **Step-9**: `128px`

### Grid

Desktop is a 12-column spread: a dominant 7-column ink plate, a 3-column editorial card stack, and a preserved 2-column void. Tablet compresses to 8 columns; mobile becomes a single folio column with the void dropped.

### Whitespace

Whitespace is structural: large margins, visible gutters, and an intentionally unfilled ivory void preserve ink-painting breath.

### Density

curatorial

### Responsive

Full-bleed hero spans 100vw; contained content caps and centres on ultra-wide; grids use minmax(0,1fr) and min-width:0 so they never overflow; mobile stacks to one column and hides the void.

### Breakpoints

- **Desktop**: >=1100px
- **Tablet**: 700-1099px
- **Mobile**: <700px

## Elevation & Depth

### Shadows

- **Sm**: 0 1px 0 rgba(11,10,8,0.16)
- **Md**: 0 18px 40px rgba(11,10,8,0.16)
- **Lg**: 0 38px 90px rgba(11,10,8,0.20)

## Shapes

### Rounded

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

### Surfaces

- **Treatment**: paper
- **Card Style**: warm laid-paper plates carrying feathered sumi-ink radial gradients, granulated charcoal speckle, and soft smoke veils
- **Bg Pattern**: noise

### Borders

- **Default Width**: 1px
- **Accent Width**: 10px
- **Style**: solid
- **Character**: fine museum hairlines interrupted by one thick black brush-bar edge per container; never a uniform box outline

## Components

### Composition

Build each screen as a large-format literary spread: one dominant ink plate, one narrow editorial column, and a preserved open void that creates asymmetric balance at every viewport.

### Hierarchy

Use scale jumps over colour: oversized serif headlines, tiny uppercase mono labels, and feathered ink washes create a lampblack-on-bone reading sequence.

### Density

Moderately sparse and curatorial; generous gutters, isolated controls, secondary information grouped like museum wall labels.

### Signature

Layered feathered sumi-ink radial plumes (multiply-blended) sit behind major plates so atmosphere becomes the navigational field; each container pairs a museum hairline with a single thick black brush-bar edge; an empty column is held open as a designed void.

## 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-019ef882-27ca-7fc0-ae5d-e96dc8bcaab7/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 lampblack ink, bone paper, and feathered ink gradients as the core visual vocabulary.
- Do Preserve at least one large open void in important screens and compositions.
- Do Let oversized serif type and the single brush-bar edge define hierarchy before adding chrome.
- Do Treat images, charts, and forms as curated plates with mono labels, hairlines, and atmospheric edges.
- Do Keep the top nav open across the header; build hierarchy with space, type, and surface.
- Don't Do not fill every grid cell or turn the language into a dense admin dashboard.
- Don't Do not let the three margin inks become a surface field; keep them as highlighter-like margin strokes.
- Don't Do not use default browser form controls; restyle every input, select, switch, radio, and checkbox.
- Don't Do not centre everything; maintain asymmetric balance and tense margins.
- Don't Do not stamp a decorative edge on every side of a card or nest cards.

### Accessibility

Body text 17px on high-contrast lampblack-over-bone; AA-plus contrast on plates uses paper text over ink with mix-blend difference held legible; focus states use a thick ink underline/ring; motion respects prefers-reduced-motion and the settled state renders with no JavaScript.

## Imagery Direction

### Pairs With

suiboku

### Summary

Monochrome gestural sumi ink-wash on warm bone-ivory paper. Full-frame ink plates that dissolve into a breathing ivory void; no colour enters the imagery.

### Subjects

- misted mountain ridges
- a heron or crane in flight
- single calligraphic gestures
- smoke and water studies
- bare branches over paper

### Usage

Hero and feature imagery are full-frame suiboku plates with a large negative-space void positioned for overlay text; the landing hero is a swappable background-image: var(--hero-image).

```json
{
  "$schema": "https://ui.shadcn.com/schema/registry-item.json",
  "name": "lampblack",
  "type": "registry:theme",
  "title": "Lampblack shadcn Theme",
  "cssVars": {
    "theme": {},
    "light": {
      "background": "#ECE6D6",
      "foreground": "#0B0A08",
      "card": "#F8F3E6",
      "card-foreground": "#0B0A08",
      "popover": "#F8F3E6",
      "popover-foreground": "#0B0A08",
      "primary": "#0B0A08",
      "primary-foreground": "#ffffff",
      "secondary": "#f4f4f5",
      "secondary-foreground": "#111111",
      "muted": "#6C655A",
      "muted-foreground": "#0B0A08",
      "accent": "#8A5A2B",
      "accent-foreground": "#ffffff",
      "destructive": "#7B1E1E",
      "border": "#1A1714",
      "input": "#1A1714",
      "ring": "#8A5A2B",
      "chart-1": "#0B0A08",
      "chart-2": "#f4f4f5",
      "chart-3": "#8A5A2B",
      "chart-4": "#2F5A47",
      "chart-5": "#9A6A16",
      "sidebar": "#F8F3E6",
      "sidebar-foreground": "#0B0A08",
      "sidebar-primary": "#0B0A08",
      "sidebar-primary-foreground": "#ffffff",
      "sidebar-accent": "#2C3E55",
      "sidebar-accent-foreground": "#ffffff",
      "sidebar-border": "#1A1714",
      "sidebar-ring": "#8A5A2B",
      "radius": "0"
    },
    "dark": {
      "background": "#0f1115",
      "foreground": "#f8fafc",
      "card": "#181b22",
      "card-foreground": "#f8fafc",
      "popover": "#181b22",
      "popover-foreground": "#f8fafc",
      "primary": "#0B0A08",
      "primary-foreground": "#ffffff",
      "secondary": "#252a33",
      "secondary-foreground": "#f8fafc",
      "muted": "#252a33",
      "muted-foreground": "#a1a1aa",
      "accent": "#8A5A2B",
      "accent-foreground": "#ffffff",
      "destructive": "#7B1E1E",
      "border": "#303642",
      "input": "#303642",
      "ring": "#8A5A2B",
      "chart-1": "#0B0A08",
      "chart-2": "#f4f4f5",
      "chart-3": "#8A5A2B",
      "chart-4": "#2F5A47",
      "chart-5": "#9A6A16",
      "sidebar": "#181b22",
      "sidebar-foreground": "#f8fafc",
      "sidebar-primary": "#0B0A08",
      "sidebar-primary-foreground": "#ffffff",
      "sidebar-accent": "#8A5A2B",
      "sidebar-accent-foreground": "#ffffff",
      "sidebar-border": "#303642",
      "sidebar-ring": "#8A5A2B",
      "radius": "0"
    }
  },
  "meta": {
    "source": "katagami",
    "languageId": "en-019ef882-27ca-7fc0-ae5d-e96dc8bcaab7",
    "slug": "lampblack",
    "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": {
      "colors": [
        "accent",
        "accent_2",
        "accent_3",
        "bg",
        "border",
        "error",
        "info",
        "muted",
        "on_accent",
        "success",
        "surface",
        "text",
        "warning"
      ],
      "typography": [
        "base_size",
        "body_font",
        "google_fonts_url",
        "heading_font",
        "heading_transform",
        "heading_weight",
        "letter_spacing",
        "line_height",
        "mono_font",
        "scale_ratio"
      ],
      "radii": [
        "full",
        "lg",
        "md",
        "none",
        "sm"
      ],
      "shadows": [
        "lg",
        "md",
        "sm"
      ],
      "spacing": [
        "base",
        "scale"
      ],
      "surfaces": [
        "bg_pattern",
        "card_style",
        "treatment"
      ],
      "borders": [
        "accent_width",
        "character",
        "default_width",
        "style"
      ],
      "motion": [
        "duration",
        "easing",
        "philosophy"
      ]
    }
  }
}
```