Quoin Hall

# Quoin Hall

## Philosophy

A postmodern operating surface for civic decision tools that turns Memphis geometry and quoted facades into disciplined interface structure: registered flat color planes, uniform black construction lines, one flat misregistration offset, and checkerboard corner keys that mark what is live. Playful, plural, high-chroma, but organized around a usable review workflow rather than decorative chaos.

### Values

- Plural forms held by a strict interaction grid
- Visual wit that clarifies workflow ownership and state
- High-chroma civic optimism with off-white breathing room
- Historic quotation translated into interface structure
- Product surfaces that feel authored, not themed

### Anti-Values

- Generic white SaaS cards with colour pasted on top
- Random Memphis confetti that does not organize hierarchy
- Soft drop shadows, glows, or glassmorphism on civic chrome
- Postmodern references that make controls harder to read
- A single coloured edge as the only accent on a card

## Tokens

### Colors

| Name | Value |
|------|-------|
| bg | `#F8F3E8` |
| surface | `#FFFBEF` |
| recess | `#EFE8D6` |
| text | `#171313` |
| muted | `#6B625B` |
| border | `#171313` |
| on_accent | `#FFFBEF` |
| accent | `#0057D9` |
| accent_2 | `#E11931` |
| accent_3 | `#F6D800` |
| mint | `#9FE3C4` |
| lilac | `#C9B7FF` |
| success | `#12A879` |
| warning | `#F6B400` |
| error | `#C9152D` |
| info | `#6B5BFF` |

### Typography

- **Base Size**: 17px
- **Body Font**: Atkinson Hyperlegible
- **Heading Font**: Oswald
- **Mono Font**: Space Mono
- **Heading Weight**: 700
- **Heading Transform**: uppercase
- **Letter Spacing**: -0.02em
- **Line Height**: 1.48
- **Scale Ratio**: 1.25
- **Google Fonts Url**: https://fonts.googleapis.com/css2?family=Atkinson+Hyperlegible:wght@400;700&family=Oswald:wght@500;600;700&family=Space+Mono:wght@400;700&display=swap

### Radii

- **None**: 0
- **Sm**: 0
- **Md**: 0
- **Lg**: 24px
- **Full**: 9999px

### Shadows

- **Character**: one flat one-directional misregistration offset (a hard zero-blur color block down-right), never a soft drop shadow
- **Sm**: 3px 3px 0 #171313
- **Md**: 5px 5px 0 #0057D9
- **Lg**: 6px 6px 0 #E11931

### Spacing

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

### Surfaces

- **Bg Pattern**: thin mint construction grid with an oversized lemon disk and lilac arch underlays used only to zone content
- **Card Style**: flat surface color-plane, uniform black construction-line border, one flat register offset, optional checkerboard corner key on the live item
- **Treatment**: off-white civic slabs over a sparse mint grid with controlled geometric zoning

### Borders

- **Default Width**: 2.5px
- **Accent Width**: 3px
- **Style**: solid
- **Character**: even-weight black construction lines; state shown by checker keys and structural actor keys, never a lone coloured side edge

### Motion

- **Duration**: 160ms
- **Easing**: cubic-bezier(.2,.9,.2,1)
- **Philosophy**: controls nudge diagonally by the same flat offset as their register block, so interaction feels like sliding printed blocks into register; the landing's settled state renders with no JavaScript and reveals layer on top, respecting prefers-reduced-motion

## Rules

### Composition

Build the screen around one dominant artifact — a civic proposal board with registered slabs for agenda, map, actor ledger, and review queue. Memphis references form zones and state markers, never floating confetti.

### Hierarchy

Oswald for public-facing declarations, Atkinson Hyperlegible for task content, Space Mono for codes, statuses, and numeric ledgers. Important items gain checker keys and register offsets before extra font weight.

### Density

Balanced: content panels may be information-rich, but every bright panel needs adjacent off-white spacing and no more than three dominant brights in a viewport.

### Signature

Checkerboard corner keys on the live item; a single flat misregistration offset on slabs and controls; facade-arch underlays behind major zones; structural actor keys encoding ownership across cards, rows, and dialogs.

## Layout

### Grid

Twelve-column desktop grid with 24px gutters and controlled half-cell offsets so major panels step like a playful city elevation while controls stay aligned; tablet collapses to a wider lead lane, mobile to one column with tabs becoming horizontal chips.

### Whitespace

Off-white margins as silence between chroma blocks; at least 24px between unrelated slabs; bright underlays behind no more than one third of the viewport.

### Density

balanced

### Responsive

Renders from ~390px mobile to 2560px+ ultra-wide; single-column stack on mobile with non-essential nav and table columns hidden; capped, centered content on ultra-wide with only the hero spanning 100vw.

### Breakpoints

- **Mobile**: 390px
- **Tablet**: 760px
- **Desktop**: 1080px
- **Wide**: 1440px

## Guidance

### Do

- Anchor every playful move to navigation, ownership, status, or hierarchy.
- Keep cobalt, cherry, and lemon as the bright trio, using mint and lilac mostly as underlay or quiet support.
- Use black construction lines and mono labels consistently so plural forms still feel like one system.
- Mark only the live or system-critical item with a checkerboard key; show ownership with a structural actor key.
- Make responsive layouts re-stack into a clear proposal-reading order.

### Don't

- Scatter Memphis shapes or checker/arch fragments as decorative filler without workflow meaning.
- Use soft drop shadows, glows, glassmorphism, or blurred SaaS cards.
- Put a single coloured edge as the only accent on a card, or round the corners arbitrarily.
- Let more than three brights dominate one surface, or default to a plain white ground.

### Accessibility

High contrast throughout (ink on warm off-white, off-white on cobalt/cherry/ink); body text 17px+, table rows 14.5px+; every form control explicitly styled with a visible cobalt focus ring; motion respects prefers-reduced-motion and the settled state renders with no JavaScript.

## Imagery Direction

### Pairs With

quoin

### Summary

Subjects rebuilt out of bold flat registered color planes with even-weight black construction lines and one diagonal misregistration offset; cobalt/cherry/lemon brights over a warm off-white ground, with a mint grid, a flat disk, lilac arch fragments, and checkerboard corner keys as structural background zones.

### Subjects

- postmodern civic hall facade
- market arcade canopy
- ballot / vote ledger
- town square map
- kiosk and bench objects

### Usage

Use for the landing hero and section imagery; keep the subject flat-ink and registered, never photorealistic or 3d; reserve the three brights and keep mint and lilac as structural underlay.

---
version: "alpha"
name: "Quoin Hall"
description: "Agent-curated design language exported from Katagami as DESIGN.md."
colors:
  bg: "#F8F3E8"
  surface: "#FFFBEF"
  recess: "#EFE8D6"
  text: "#171313"
  muted: "#6B625B"
  border: "#171313"
  on_accent: "#FFFBEF"
  accent: "#0057D9"
  accent_2: "#E11931"
  accent_3: "#F6D800"
  mint: "#9FE3C4"
  lilac: "#C9B7FF"
  success: "#12A879"
  warning: "#F6B400"
  error: "#C9152D"
  info: "#6B5BFF"
typography:
  headline-lg:
    fontFamily: "Oswald"
    fontSize: "2.075rem"
    fontWeight: 700
    lineHeight: 1.1
    letterSpacing: "-0.02em"
  headline-md:
    fontFamily: "Oswald"
    fontSize: "1.66rem"
    fontWeight: 600
    lineHeight: 1.15
    letterSpacing: "-0.02em"
  body-md:
    fontFamily: "Atkinson Hyperlegible"
    fontSize: "17px"
    fontWeight: 400
    lineHeight: 1.48
    letterSpacing: "-0.02em"
  label-md:
    fontFamily: "Space Mono"
    fontSize: "0.75rem"
    fontWeight: 600
    lineHeight: 1
    letterSpacing: "0.08em"
rounded:
  none: "0px"
  sm: "0px"
  md: "0px"
  lg: "24px"
  full: "9999px"
spacing:
  base: "8px"
  xs: "4px"
  sm: "8px"
  md: "12px"
  lg: "16px"
  xl: "24px"
  2xl: "32px"
  3xl: "48px"
  4xl: "64px"
components:
  color-reference-bg:
    backgroundColor: "{colors.bg}"
  color-reference-surface:
    backgroundColor: "{colors.surface}"
  color-reference-recess:
    backgroundColor: "{colors.recess}"
  color-reference-text:
    backgroundColor: "{colors.text}"
  color-reference-muted:
    backgroundColor: "{colors.muted}"
  color-reference-border:
    backgroundColor: "{colors.border}"
  color-reference-on_accent:
    backgroundColor: "{colors.on_accent}"
  color-reference-accent:
    backgroundColor: "{colors.accent}"
  color-reference-accent_2:
    backgroundColor: "{colors.accent_2}"
  color-reference-accent_3:
    backgroundColor: "{colors.accent_3}"
  color-reference-mint:
    backgroundColor: "{colors.mint}"
  color-reference-lilac:
    backgroundColor: "{colors.lilac}"
  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"
---

# Quoin Hall

## Overview

A postmodern operating surface for civic decision tools that turns Memphis geometry and quoted facades into disciplined interface structure: registered flat color planes, uniform black construction lines, one flat misregistration offset, and checkerboard corner keys that mark what is live. Playful, plural, high-chroma, but organized around a usable review workflow rather than decorative chaos.

### Values

- Plural forms held by a strict interaction grid
- Visual wit that clarifies workflow ownership and state
- High-chroma civic optimism with off-white breathing room
- Historic quotation translated into interface structure
- Product surfaces that feel authored, not themed

### Anti-Values

- Generic white SaaS cards with colour pasted on top
- Random Memphis confetti that does not organize hierarchy
- Soft drop shadows, glows, or glassmorphism on civic chrome
- Postmodern references that make controls harder to read
- A single coloured edge as the only accent on a card

## 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 | `#F8F3E8` |
| surface | `#FFFBEF` |
| recess | `#EFE8D6` |
| text | `#171313` |
| muted | `#6B625B` |
| border | `#171313` |
| on_accent | `#FFFBEF` |
| accent | `#0057D9` |
| accent_2 | `#E11931` |
| accent_3 | `#F6D800` |
| mint | `#9FE3C4` |
| lilac | `#C9B7FF` |
| success | `#12A879` |
| warning | `#F6B400` |
| error | `#C9152D` |
| info | `#6B5BFF` |

## Typography

- **Headline-Lg**: Oswald, 2.075rem, weight 700, line-height 1.1.
- **Headline-Md**: Oswald, 1.66rem, weight 600, line-height 1.15.
- **Body-Md**: Atkinson Hyperlegible, 17px, weight 400, line-height 1.48.
- **Label-Md**: Space 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`

### Grid

Twelve-column desktop grid with 24px gutters and controlled half-cell offsets so major panels step like a playful city elevation while controls stay aligned; tablet collapses to a wider lead lane, mobile to one column with tabs becoming horizontal chips.

### Whitespace

Off-white margins as silence between chroma blocks; at least 24px between unrelated slabs; bright underlays behind no more than one third of the viewport.

### Density

balanced

### Responsive

Renders from ~390px mobile to 2560px+ ultra-wide; single-column stack on mobile with non-essential nav and table columns hidden; capped, centered content on ultra-wide with only the hero spanning 100vw.

### Breakpoints

- **Mobile**: 390px
- **Tablet**: 760px
- **Desktop**: 1080px
- **Wide**: 1440px

## Elevation & Depth

### Shadows

- **Character**: one flat one-directional misregistration offset (a hard zero-blur color block down-right), never a soft drop shadow
- **Sm**: 3px 3px 0 #171313
- **Md**: 5px 5px 0 #0057D9
- **Lg**: 6px 6px 0 #E11931

## Shapes

### Rounded

- **None**: `0px`
- **Sm**: `0px`
- **Md**: `0px`
- **Lg**: `24px`
- **Full**: `9999px`

### Surfaces

- **Bg Pattern**: thin mint construction grid with an oversized lemon disk and lilac arch underlays used only to zone content
- **Card Style**: flat surface color-plane, uniform black construction-line border, one flat register offset, optional checkerboard corner key on the live item
- **Treatment**: off-white civic slabs over a sparse mint grid with controlled geometric zoning

### Borders

- **Default Width**: 2.5px
- **Accent Width**: 3px
- **Style**: solid
- **Character**: even-weight black construction lines; state shown by checker keys and structural actor keys, never a lone coloured side edge

## Components

### Composition

Build the screen around one dominant artifact — a civic proposal board with registered slabs for agenda, map, actor ledger, and review queue. Memphis references form zones and state markers, never floating confetti.

### Hierarchy

Oswald for public-facing declarations, Atkinson Hyperlegible for task content, Space Mono for codes, statuses, and numeric ledgers. Important items gain checker keys and register offsets before extra font weight.

### Density

Balanced: content panels may be information-rich, but every bright panel needs adjacent off-white spacing and no more than three dominant brights in a viewport.

### Signature

Checkerboard corner keys on the live item; a single flat misregistration offset on slabs and controls; facade-arch underlays behind major zones; structural actor keys encoding ownership across cards, rows, and dialogs.

## 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-019ef96b-7a52-76b3-a8c5-0beba25dcb6a/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 Anchor every playful move to navigation, ownership, status, or hierarchy.
- Do Keep cobalt, cherry, and lemon as the bright trio, using mint and lilac mostly as underlay or quiet support.
- Do Use black construction lines and mono labels consistently so plural forms still feel like one system.
- Do Mark only the live or system-critical item with a checkerboard key; show ownership with a structural actor key.
- Do Make responsive layouts re-stack into a clear proposal-reading order.
- Don't Scatter Memphis shapes or checker/arch fragments as decorative filler without workflow meaning.
- Don't Use soft drop shadows, glows, glassmorphism, or blurred SaaS cards.
- Don't Put a single coloured edge as the only accent on a card, or round the corners arbitrarily.
- Don't Let more than three brights dominate one surface, or default to a plain white ground.

### Accessibility

High contrast throughout (ink on warm off-white, off-white on cobalt/cherry/ink); body text 17px+, table rows 14.5px+; every form control explicitly styled with a visible cobalt focus ring; motion respects prefers-reduced-motion and the settled state renders with no JavaScript.

## Imagery Direction

### Pairs With

quoin

### Summary

Subjects rebuilt out of bold flat registered color planes with even-weight black construction lines and one diagonal misregistration offset; cobalt/cherry/lemon brights over a warm off-white ground, with a mint grid, a flat disk, lilac arch fragments, and checkerboard corner keys as structural background zones.

### Subjects

- postmodern civic hall facade
- market arcade canopy
- ballot / vote ledger
- town square map
- kiosk and bench objects

### Usage

Use for the landing hero and section imagery; keep the subject flat-ink and registered, never photorealistic or 3d; reserve the three brights and keep mint and lilac as structural underlay.

```json
{
  "$schema": "https://ui.shadcn.com/schema/registry-item.json",
  "name": "quoin-hall",
  "type": "registry:theme",
  "title": "Quoin Hall shadcn Theme",
  "cssVars": {
    "theme": {},
    "light": {
      "background": "#F8F3E8",
      "foreground": "#171313",
      "card": "#FFFBEF",
      "card-foreground": "#171313",
      "popover": "#FFFBEF",
      "popover-foreground": "#171313",
      "primary": "#171313",
      "primary-foreground": "#ffffff",
      "secondary": "#f4f4f5",
      "secondary-foreground": "#111111",
      "muted": "#6B625B",
      "muted-foreground": "#171313",
      "accent": "#0057D9",
      "accent-foreground": "#ffffff",
      "destructive": "#C9152D",
      "border": "#171313",
      "input": "#171313",
      "ring": "#0057D9",
      "chart-1": "#171313",
      "chart-2": "#f4f4f5",
      "chart-3": "#0057D9",
      "chart-4": "#12A879",
      "chart-5": "#F6B400",
      "sidebar": "#FFFBEF",
      "sidebar-foreground": "#171313",
      "sidebar-primary": "#171313",
      "sidebar-primary-foreground": "#ffffff",
      "sidebar-accent": "#6B5BFF",
      "sidebar-accent-foreground": "#ffffff",
      "sidebar-border": "#171313",
      "sidebar-ring": "#0057D9",
      "radius": "0"
    },
    "dark": {
      "background": "#0f1115",
      "foreground": "#f8fafc",
      "card": "#181b22",
      "card-foreground": "#f8fafc",
      "popover": "#181b22",
      "popover-foreground": "#f8fafc",
      "primary": "#171313",
      "primary-foreground": "#ffffff",
      "secondary": "#252a33",
      "secondary-foreground": "#f8fafc",
      "muted": "#252a33",
      "muted-foreground": "#a1a1aa",
      "accent": "#0057D9",
      "accent-foreground": "#ffffff",
      "destructive": "#C9152D",
      "border": "#303642",
      "input": "#303642",
      "ring": "#0057D9",
      "chart-1": "#171313",
      "chart-2": "#f4f4f5",
      "chart-3": "#0057D9",
      "chart-4": "#12A879",
      "chart-5": "#F6B400",
      "sidebar": "#181b22",
      "sidebar-foreground": "#f8fafc",
      "sidebar-primary": "#171313",
      "sidebar-primary-foreground": "#ffffff",
      "sidebar-accent": "#0057D9",
      "sidebar-accent-foreground": "#ffffff",
      "sidebar-border": "#303642",
      "sidebar-ring": "#0057D9",
      "radius": "0"
    }
  },
  "meta": {
    "source": "katagami",
    "languageId": "en-019ef96b-7a52-76b3-a8c5-0beba25dcb6a",
    "slug": "quoin-hall",
    "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",
        "lilac",
        "mint",
        "muted",
        "on_accent",
        "recess",
        "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": [
        "character",
        "lg",
        "md",
        "sm"
      ],
      "spacing": [
        "base",
        "scale"
      ],
      "surfaces": [
        "bg_pattern",
        "card_style",
        "treatment"
      ],
      "borders": [
        "accent_width",
        "character",
        "default_width",
        "style"
      ],
      "motion": [
        "duration",
        "easing",
        "philosophy"
      ]
    }
  }
}
```