Vitrine

# Vitrine

## Philosophy

A product-first, museum-white interface where deep violet supplies calm intellectual authority and a single restrained chartreuse signal marks only live, high-value moments. The page is the gallery, your content is the object on the stage, and colour speaks only when it has something to say.

### Values

- Product content stays the visual hero through white space, graphite typography, and minimal chrome.
- Deep violet is structural and supervisory: selected controls, current scope, active states, and primary product decisions.
- Chartreuse is a sharp optical signal for live thresholds, deltas, focus confirmations, and one or two decisive calls to action.
- Premium restraint comes from larger pauses, fine stone hairlines, and disciplined radii instead of decorative colour fields.

### Anti-Values

- No rainbow UI, SaaS dashboard templates, coloured side rails, stripe accents, confetti, dotted textures, or square-grid backgrounds.
- No casual neon cyberpunk treatment; chartreuse must never flood surfaces or compete with product imagery.
- No arbitrary mixed corner radii, gradient washes, or generic card-collage layouts.

### Visual Character

- Museum-white page field with no pattern or grid texture and large uninterrupted margins around a centred product workspace.
- Thin light-stone dividers and graphite hairlines define planes while avoiding coloured side rails or decorative card stripes.
- Deep-violet active controls use compact filled capsules and underlined text markers rather than broad tinted panels.
- Chartreuse is limited to small luminous LEDs, numeric deltas, focus ticks, and one precision scrubber handle at under five percent visual coverage.
- Asymmetric product-study layout pairs an oversized object stage with narrow instrument panels and quiet metadata rows.

## Tokens

### Colors

| Name | Value |
|------|-------|
| bg | `#FAFAF7` |
| surface | `#FFFFFF` |
| text | `#17151A` |
| muted | `#77736E` |
| border | `#E3E0D8` |
| accent | `#5A2EA6` |
| accent_deep | `#3B1B72` |
| signal | `#C9F24A` |
| on_accent | `#FFFFFF` |
| on_signal | `#17151A` |
| primary | `#3B1B72` |
| secondary | `#C9F24A` |
| success | `#6A7F16` |
| warning | `#7A6413` |
| error | `#8E2430` |
| info | `#4A3A75` |

### Typography

- **Base Size**: 17px
- **Body Font**: Inter
- **Heading Font**: Instrument Sans
- **Mono Font**: IBM Plex Mono
- **Heading Weight**: 700
- **Heading Transform**: none
- **Letter Spacing**: -0.025em
- **Line Height**: 1.5
- **Scale Ratio**: 1.22
- **Google Fonts Url**: https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500&family=Instrument+Sans:wght@500;600;700&family=Inter:wght@400;500;600&display=swap

### Radii

- **None**: 0
- **Card**: 16px
- **Pill**: 9999px

### Shadows

- **Sm**: 0 1px 2px rgba(23,21,26,0.05)
- **Md**: 0 16px 40px rgba(23,21,26,0.08)
- **Lg**: 0 34px 90px rgba(23,21,26,0.12)

### Spacing

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

### Surfaces

- **Bg Pattern**: No pattern, no dots, no square grid; the background is uninterrupted warm museum white.
- **Card Style**: Low-relief rectangular cards with 16px radius and a thin stone hairline; minimal shadow only when elevated above the product stage.
- **Treatment**: Flat museum-white and pure-white planes with subtle stone hairlines; avoid colour washes except a very pale violet selection field.

### Borders

- **Default Width**: 1px
- **Accent Width**: 1.5px
- **Style**: solid
- **Character**: Stone hairlines for structure; violet only for selected outlines and chartreuse only for tiny state ticks, never decorative rails.

### Motion

- **Duration**: 180ms
- **Easing**: cubic-bezier(0.2, 0.0, 0.1, 1)
- **Philosophy**: Interactions feel like precise instrument calibration: short fades, 1-2px lifts, and exact focus ticks without bounce or spectacle.

## Rules

### Composition

Use a spacious product-study composition: one large object or content stage occupies the visual centre, while narrow measurement panels and calm navigation sit at the perimeter.

### Hierarchy

Hierarchy is set through scale, weight, and isolation; violet marks current scope and chartreuse marks live significance, never decoration.

### Density

Low-to-medium density with generous 24-64px pauses, compact mono metadata rows, and at least one open quiet zone in every major viewport.

### Signature

- Product-stage asymmetry: a large unpatterned white stage offsets a compact graphite/violet instrument cluster without a generic dashboard grid.
- Violet aperture controls: selected tabs and primary actions use deep-violet filled capsules with tight padding and white type.
- Chartreuse precision ticks: small circular LEDs, one slider handle, and numeric deltas mark only active, live, or threshold states.
- Stone vitrine panels: white cards use thin stone borders, small mono labels, and internal horizontal separators for museum-object clarity.
- Quiet focus rings: keyboard focus is a 1.5px violet outline plus a tiny chartreuse notch rather than glowing neon.

## Layout

### Grid

Desktop uses a 12-column fluid grid with a dominant 7-column stage, a 3-column instrument stack, and calm 2-column navigation; mobile collapses to stacked sections.

### Whitespace

Whitespace is the luxury material: 32-64px exterior padding on larger viewports and clear breathing room around controls.

### Density

Low-to-medium; one open quiet zone per major viewport.

### Responsive

Render well from 390px mobile to 2560px+ ultra-wide; stack to one column on mobile, drop non-essential nav and table columns, never overflow horizontally; cap content at 1320px and centre on ultra-wide while only the hero spans 100vw.

### Breakpoints

- **Mobile**: 375px
- **Tablet**: 768px
- **Desktop**: 1200px
- **Wide**: 1440px
- **Max Content**: 1320px

## Guidance

### Do

- Keep backgrounds plain museum white and let product content, typography, and measurement panels create structure.
- Use deep violet for active navigation, current scope, selected states, and primary product decisions.
- Use chartreuse sparingly for live deltas, selected handles, status dots, and one decisive action moment only.
- Build components from fine stone borders, consistent 16px card radii, and precise mono metadata labels.

### Don't

- Do not use dotted backgrounds, square grids, coloured side rails, card stripes, swatch collages, gradients, or confetti.
- Do not add blue, orange, coral, or additional vivid accent systems beyond the violet and restrained chartreuse relationship.
- Do not flood cards or panels with chartreuse; it must remain a sharp highlight.
- Do not turn the concept into a generic analytics dashboard or rainbow component catalog.

### Accessibility

Graphite ink on museum white and pure white meets high contrast; chartreuse is paired with text or shape, never carrying meaning by colour alone; focus is a visible 1.5px violet ring; body text 17px+, table rows 14.5px+; motion respects prefers-reduced-motion.

## Imagery Direction

### Pairs With

plinth

### Summary

Museum object-study photography: a single subject isolated on a seamless warm museum-white sweep, raking light from the upper-left tinting the shadow deep cool violet, with one razor-thin chartreuse rim catching a single lit contour like a live signal.

### Subjects

- antique scientific instrument
- single museum object
- precision brass mechanism
- isolated product on a seamless sweep

### Usage

One full-bleed landing hero driven by background-image: var(--hero-image); the studio swaps the URL. Keep the overlay legible without a lazy gradient scrim.

---
version: "alpha"
name: "Vitrine"
description: "Agent-curated design language exported from Katagami as DESIGN.md."
colors:
  bg: "#FAFAF7"
  surface: "#FFFFFF"
  text: "#17151A"
  muted: "#77736E"
  border: "#E3E0D8"
  accent: "#5A2EA6"
  accent_deep: "#3B1B72"
  signal: "#C9F24A"
  on_accent: "#FFFFFF"
  on_signal: "#17151A"
  primary: "#3B1B72"
  secondary: "#C9F24A"
  success: "#6A7F16"
  warning: "#7A6413"
  error: "#8E2430"
  info: "#4A3A75"
typography:
  headline-lg:
    fontFamily: "Instrument Sans"
    fontSize: "1.929rem"
    fontWeight: 700
    lineHeight: 1.1
    letterSpacing: "-0.025em"
  headline-md:
    fontFamily: "Instrument Sans"
    fontSize: "1.581rem"
    fontWeight: 600
    lineHeight: 1.15
    letterSpacing: "-0.025em"
  body-md:
    fontFamily: "Inter"
    fontSize: "17px"
    fontWeight: 400
    lineHeight: 1.5
    letterSpacing: "-0.025em"
  label-md:
    fontFamily: "IBM Plex Mono"
    fontSize: "0.75rem"
    fontWeight: 600
    lineHeight: 1
    letterSpacing: "0.08em"
rounded:
  none: "0px"
  card: "16px"
  pill: "9999px"
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-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-accent_deep:
    backgroundColor: "{colors.accent_deep}"
  color-reference-signal:
    backgroundColor: "{colors.signal}"
  color-reference-on_accent:
    backgroundColor: "{colors.on_accent}"
  color-reference-on_signal:
    backgroundColor: "{colors.on_signal}"
  color-reference-primary:
    backgroundColor: "{colors.primary}"
  color-reference-secondary:
    backgroundColor: "{colors.secondary}"
  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.primary}"
    textColor: "#ffffff"
    typography: "{typography.label-md}"
    rounded: "{rounded.none}"
    padding: "{spacing.md}"
  card-surface:
    backgroundColor: "{colors.surface}"
    textColor: "{colors.text}"
    rounded: "{rounded.none}"
    padding: "{spacing.md}"
  input-default:
    backgroundColor: "{colors.surface}"
    textColor: "{colors.text}"
    rounded: "{rounded.none}"
    height: "44px"
---

# Vitrine

## Overview

A product-first, museum-white interface where deep violet supplies calm intellectual authority and a single restrained chartreuse signal marks only live, high-value moments. The page is the gallery, your content is the object on the stage, and colour speaks only when it has something to say.

### Values

- Product content stays the visual hero through white space, graphite typography, and minimal chrome.
- Deep violet is structural and supervisory: selected controls, current scope, active states, and primary product decisions.
- Chartreuse is a sharp optical signal for live thresholds, deltas, focus confirmations, and one or two decisive calls to action.
- Premium restraint comes from larger pauses, fine stone hairlines, and disciplined radii instead of decorative colour fields.

### Anti-Values

- No rainbow UI, SaaS dashboard templates, coloured side rails, stripe accents, confetti, dotted textures, or square-grid backgrounds.
- No casual neon cyberpunk treatment; chartreuse must never flood surfaces or compete with product imagery.
- No arbitrary mixed corner radii, gradient washes, or generic card-collage layouts.

### Visual Character

- Museum-white page field with no pattern or grid texture and large uninterrupted margins around a centred product workspace.
- Thin light-stone dividers and graphite hairlines define planes while avoiding coloured side rails or decorative card stripes.
- Deep-violet active controls use compact filled capsules and underlined text markers rather than broad tinted panels.
- Chartreuse is limited to small luminous LEDs, numeric deltas, focus ticks, and one precision scrubber handle at under five percent visual coverage.
- Asymmetric product-study layout pairs an oversized object stage with narrow instrument panels and quiet metadata rows.

## 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 | `#FAFAF7` |
| surface | `#FFFFFF` |
| text | `#17151A` |
| muted | `#77736E` |
| border | `#E3E0D8` |
| accent | `#5A2EA6` |
| accent_deep | `#3B1B72` |
| signal | `#C9F24A` |
| on_accent | `#FFFFFF` |
| on_signal | `#17151A` |
| primary | `#3B1B72` |
| secondary | `#C9F24A` |
| success | `#6A7F16` |
| warning | `#7A6413` |
| error | `#8E2430` |
| info | `#4A3A75` |

## Typography

- **Headline-Lg**: Instrument Sans, 1.929rem, weight 700, line-height 1.1.
- **Headline-Md**: Instrument Sans, 1.581rem, weight 600, line-height 1.15.
- **Body-Md**: Inter, 17px, weight 400, line-height 1.5.
- **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`

### Grid

Desktop uses a 12-column fluid grid with a dominant 7-column stage, a 3-column instrument stack, and calm 2-column navigation; mobile collapses to stacked sections.

### Whitespace

Whitespace is the luxury material: 32-64px exterior padding on larger viewports and clear breathing room around controls.

### Density

Low-to-medium; one open quiet zone per major viewport.

### Responsive

Render well from 390px mobile to 2560px+ ultra-wide; stack to one column on mobile, drop non-essential nav and table columns, never overflow horizontally; cap content at 1320px and centre on ultra-wide while only the hero spans 100vw.

### Breakpoints

- **Mobile**: 375px
- **Tablet**: 768px
- **Desktop**: 1200px
- **Wide**: 1440px
- **Max Content**: 1320px

## Elevation & Depth

### Shadows

- **Sm**: 0 1px 2px rgba(23,21,26,0.05)
- **Md**: 0 16px 40px rgba(23,21,26,0.08)
- **Lg**: 0 34px 90px rgba(23,21,26,0.12)

## Shapes

### Rounded

- **None**: `0px`
- **Card**: `16px`
- **Pill**: `9999px`

### Surfaces

- **Bg Pattern**: No pattern, no dots, no square grid; the background is uninterrupted warm museum white.
- **Card Style**: Low-relief rectangular cards with 16px radius and a thin stone hairline; minimal shadow only when elevated above the product stage.
- **Treatment**: Flat museum-white and pure-white planes with subtle stone hairlines; avoid colour washes except a very pale violet selection field.

### Borders

- **Default Width**: 1px
- **Accent Width**: 1.5px
- **Style**: solid
- **Character**: Stone hairlines for structure; violet only for selected outlines and chartreuse only for tiny state ticks, never decorative rails.

## Components

### Composition

Use a spacious product-study composition: one large object or content stage occupies the visual centre, while narrow measurement panels and calm navigation sit at the perimeter.

### Hierarchy

Hierarchy is set through scale, weight, and isolation; violet marks current scope and chartreuse marks live significance, never decoration.

### Density

Low-to-medium density with generous 24-64px pauses, compact mono metadata rows, and at least one open quiet zone in every major viewport.

### Signature

- Product-stage asymmetry: a large unpatterned white stage offsets a compact graphite/violet instrument cluster without a generic dashboard grid.
- Violet aperture controls: selected tabs and primary actions use deep-violet filled capsules with tight padding and white type.
- Chartreuse precision ticks: small circular LEDs, one slider handle, and numeric deltas mark only active, live, or threshold states.
- Stone vitrine panels: white cards use thin stone borders, small mono labels, and internal horizontal separators for museum-object clarity.
- Quiet focus rings: keyboard focus is a 1.5px violet outline plus a tiny chartreuse notch rather than glowing neon.

## 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-019efab6-5558-76a3-8864-3e108694beab/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 Keep backgrounds plain museum white and let product content, typography, and measurement panels create structure.
- Do Use deep violet for active navigation, current scope, selected states, and primary product decisions.
- Do Use chartreuse sparingly for live deltas, selected handles, status dots, and one decisive action moment only.
- Do Build components from fine stone borders, consistent 16px card radii, and precise mono metadata labels.
- Don't Do not use dotted backgrounds, square grids, coloured side rails, card stripes, swatch collages, gradients, or confetti.
- Don't Do not add blue, orange, coral, or additional vivid accent systems beyond the violet and restrained chartreuse relationship.
- Don't Do not flood cards or panels with chartreuse; it must remain a sharp highlight.
- Don't Do not turn the concept into a generic analytics dashboard or rainbow component catalog.

### Accessibility

Graphite ink on museum white and pure white meets high contrast; chartreuse is paired with text or shape, never carrying meaning by colour alone; focus is a visible 1.5px violet ring; body text 17px+, table rows 14.5px+; motion respects prefers-reduced-motion.

## Imagery Direction

### Pairs With

plinth

### Summary

Museum object-study photography: a single subject isolated on a seamless warm museum-white sweep, raking light from the upper-left tinting the shadow deep cool violet, with one razor-thin chartreuse rim catching a single lit contour like a live signal.

### Subjects

- antique scientific instrument
- single museum object
- precision brass mechanism
- isolated product on a seamless sweep

### Usage

One full-bleed landing hero driven by background-image: var(--hero-image); the studio swaps the URL. Keep the overlay legible without a lazy gradient scrim.

```json
{
  "$schema": "https://ui.shadcn.com/schema/registry-item.json",
  "name": "vitrine",
  "type": "registry:theme",
  "title": "Vitrine shadcn Theme",
  "cssVars": {
    "theme": {},
    "light": {
      "background": "#FAFAF7",
      "foreground": "#17151A",
      "card": "#FFFFFF",
      "card-foreground": "#17151A",
      "popover": "#FFFFFF",
      "popover-foreground": "#17151A",
      "primary": "#3B1B72",
      "primary-foreground": "#ffffff",
      "secondary": "#C9F24A",
      "secondary-foreground": "#111111",
      "muted": "#77736E",
      "muted-foreground": "#17151A",
      "accent": "#5A2EA6",
      "accent-foreground": "#ffffff",
      "destructive": "#8E2430",
      "border": "#E3E0D8",
      "input": "#E3E0D8",
      "ring": "#5A2EA6",
      "chart-1": "#3B1B72",
      "chart-2": "#C9F24A",
      "chart-3": "#5A2EA6",
      "chart-4": "#6A7F16",
      "chart-5": "#7A6413",
      "sidebar": "#FFFFFF",
      "sidebar-foreground": "#17151A",
      "sidebar-primary": "#3B1B72",
      "sidebar-primary-foreground": "#ffffff",
      "sidebar-accent": "#4A3A75",
      "sidebar-accent-foreground": "#ffffff",
      "sidebar-border": "#E3E0D8",
      "sidebar-ring": "#5A2EA6",
      "radius": "0.625rem"
    },
    "dark": {
      "background": "#0f1115",
      "foreground": "#f8fafc",
      "card": "#181b22",
      "card-foreground": "#f8fafc",
      "popover": "#181b22",
      "popover-foreground": "#f8fafc",
      "primary": "#3B1B72",
      "primary-foreground": "#ffffff",
      "secondary": "#252a33",
      "secondary-foreground": "#f8fafc",
      "muted": "#252a33",
      "muted-foreground": "#a1a1aa",
      "accent": "#5A2EA6",
      "accent-foreground": "#ffffff",
      "destructive": "#8E2430",
      "border": "#303642",
      "input": "#303642",
      "ring": "#5A2EA6",
      "chart-1": "#3B1B72",
      "chart-2": "#C9F24A",
      "chart-3": "#5A2EA6",
      "chart-4": "#6A7F16",
      "chart-5": "#7A6413",
      "sidebar": "#181b22",
      "sidebar-foreground": "#f8fafc",
      "sidebar-primary": "#3B1B72",
      "sidebar-primary-foreground": "#ffffff",
      "sidebar-accent": "#5A2EA6",
      "sidebar-accent-foreground": "#ffffff",
      "sidebar-border": "#303642",
      "sidebar-ring": "#5A2EA6",
      "radius": "0.625rem"
    }
  },
  "meta": {
    "source": "katagami",
    "languageId": "en-019efab6-5558-76a3-8864-3e108694beab",
    "slug": "vitrine",
    "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_deep",
        "bg",
        "border",
        "error",
        "info",
        "muted",
        "on_accent",
        "on_signal",
        "primary",
        "secondary",
        "signal",
        "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": [
        "card",
        "none",
        "pill"
      ],
      "shadows": [
        "lg",
        "md",
        "sm"
      ],
      "spacing": [
        "base",
        "scale"
      ],
      "surfaces": [
        "bg_pattern",
        "card_style",
        "treatment"
      ],
      "borders": [
        "accent_width",
        "character",
        "default_width",
        "style"
      ],
      "motion": [
        "duration",
        "easing",
        "philosophy"
      ]
    }
  }
}
```