Mossbank

# Mossbank

## Philosophy

Mossbank treats interface surfaces like cultivated riverbank terrain: living, breathable, structured by growth rather than mechanical symmetry. Information sits in layers of paper fiber, sediment, and botanical residue; hierarchy emerges through natural strata, branching emphasis, and generous breathing room that implies stewardship and slow confidence over speed. A faithful modernization of Organic Naturalism.

### Values

- Cultivated calm over sterile optimization
- Material tactility over glossy abstraction
- Asymmetric growth over rigid repetition
- Readable warmth over corporate distance
- Interfaces that imply stewardship, care, and continuity

### Anti-Values

- Chrome-heavy futurism
- Perfectly rectilinear grids everywhere
- Cold fluorescent contrast
- Aggressive motion or gamified bounce
- Sharp synthetic edges disconnected from material texture

### Visual Character

- Important cards carry a clipped upper-right leaf-notch
- Large surfaces carry faint drifting topographic contour washes
- Headings use tapered branching vein underlines from layered gradients
- Controls are seed-pod capsules with soft inset rims and moss pressed states
- An asymmetric river layout pairs a broad content stream with a narrow observation rail

## Tokens

### Colors

| Name | Value |
|------|-------|
| bg | `#F4EFE3` |
| surface | `#FBF7EE` |
| surface_solid | `#F0E9D8` |
| text | `#243026` |
| muted | `#6F756A` |
| border | `rgba(36,48,38,0.08)` |
| accent | `#4E6B47` |
| accent_2 | `#B86C3A` |
| accent_soft | `#5F7E8A` |
| on_accent | `#FBF7EE` |
| success | `#557A46` |
| warning | `#C28A2E` |
| error | `#A64B45` |
| info | `#5F7E8A` |

### Typography

- **Base Size**: 17px
- **Body Font**: Literata
- **Heading Font**: Fraunces
- **Mono Font**: Spline Sans Mono
- **Heading Weight**: 600
- **Heading Transform**: none
- **Letter Spacing**: -0.02em
- **Line Height**: 1.6
- **Scale Ratio**: 1.2
- **Google Fonts Url**: https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,500;9..144,600;9..144,700&family=Literata:opsz,wght@7..72,400;7..72,500;7..72,600&family=Spline+Sans+Mono:wght@400;500;600&display=swap

### Radii

- **None**: 0px
- **Md**: 16px
- **Lg**: 24px
- **Full**: 9999px

### Shadows

- **Sm**: 0 2px 10px rgba(36,48,38,0.08)
- **Md**: 0 14px 34px rgba(36,48,38,0.11)
- **Lg**: 0 26px 64px rgba(36,48,38,0.15)

### Spacing

- **Base**: 8px
- **Scale**: ["8px","16px","22px","26px","40px","64px","80px","104px"]

### Surfaces

- **Treatment**: parchment
- **Card Style**: borderless layered parchment cards with sediment-spot wash and a clipped upper-right leaf-notch
- **Bg Pattern**: drifting topographic contour lines and sediment spots

### Borders

- **Default Width**: 0px
- **Accent Width**: 4px
- **Style**: none
- **Character**: borderless; separation by surface, wash, and shadow; a soft fiber hairline only inside ghost controls and as the left root-marker stem

### Motion

- **Duration**: 220ms
- **Easing**: cubic-bezier(0.23, 1, 0.32, 1)
- **Philosophy**: deliberate settling, never bounce

## Rules

### Composition

Compose interfaces as interdependent ecological zones instead of stacked boxes: a main content stream for the core task, a narrow observation rail for context, and leaf-notched habitat cards for records. Let content bands widen and narrow like terraces instead of enforcing equal widths.

### Hierarchy

Lead with expressive Fraunces headings, then use mono species-label microcopy, badges, and vein dividers to guide scanning. Important actions sit in moss seed-pod capsules; secondary information recedes into quieter washes.

### Density

Moderate-to-airy. Generous internal padding and breathing room between macro sections, local clusters kept tight enough to feel cultivated. Dense data is softened with wash backgrounds, root markers, and rounded containment.

### Signature Patterns

- Large surfaces carry drifting topographic contour lines and sediment-spot washes as backgrounds
- Cards and modals use a clipped upper-right leaf-notch silhouette; never bordered
- Section headings use tapered branching vein underlines from layered gradients
- Buttons, toggles, radios and inputs use seed-pod capsule geometry with inset rims and pressed states
- Table rows and list items carry a left root-marker stem in an accent colour

## Layout

### Grid

An asymmetric river grid on desktop: a broad content stream paired with a narrower observation rail, sections staggered as terraces. Grids use minmax(0,1fr) so children shrink rather than overflow.

### Breakpoints

The tablet band (768-1024) is its own layout: two-column grids and a compressed rail, never the mobile column stretched wide. At 768px the rail stacks below the stream and non-essential nav collapses. At 480px single-column terraces, full-width controls, scrollable tables.

### Whitespace

Large outer margins and deep panel padding, with tighter plant-like clustering inside cards. Whitespace reads like air pockets between stones: irregular at the macro level, disciplined at the micro level.

## Guidance

### Do

- Use warm parchment and moss as the dominant field, clay reserved for key moments
- Shape containers and controls so they feel grown, not machine-stamped
- Employ contour washes and layered sediment to suggest material depth
- Let headings feel literary while keeping body copy highly readable
- Anchor dense information with root markers and quiet dividers

### Don't

- Do not introduce glassmorphism, neon gradients, or metallic chrome
- Do not square the interface into repetitive identical cards
- Do not add card borders or clinical grayscale-only contrast
- Do not over-animate controls; movement settles, never bounces
- Do not let decorative organic motifs overpower legibility or task flow

## Imagery Direction

### Summary

Botanical field-note plates: pressed leaves and sedge, soil strata, water rings, seed labels, and muted topographic maps, in muted watercolor and fine ink on pressed-fiber parchment.

### Pairs With

fieldplate

### Technique

muted botanical watercolor and fine ink on parchment; drifting contour lines; sediment bands; soft water-ring stains

### Palette

muted moss green, warm bark brown, single clay-orange accent on warm parchment

### Reference Image File Ids

- fl-019f706b-7157-7290-874b-f7b3943ca1e7
- fl-019f706b-760c-7013-a7a4-1d74b7d3caac
- fl-019f706b-7bea-7b42-bada-41dd05e77e5d

---
version: "alpha"
name: "Mossbank"
description: "Agent-curated design language exported from Katagami as DESIGN.md."
colors:
  bg: "#F4EFE3"
  surface: "#FBF7EE"
  surface_solid: "#F0E9D8"
  text: "#243026"
  muted: "#6F756A"
  accent: "#4E6B47"
  accent_2: "#B86C3A"
  accent_soft: "#5F7E8A"
  on_accent: "#FBF7EE"
  success: "#557A46"
  warning: "#C28A2E"
  error: "#A64B45"
  info: "#5F7E8A"
typography:
  headline-lg:
    fontFamily: "Fraunces"
    fontSize: "2.075rem"
    fontWeight: 700
    lineHeight: 1.1
    letterSpacing: "-0.02em"
  headline-md:
    fontFamily: "Fraunces"
    fontSize: "1.66rem"
    fontWeight: 600
    lineHeight: 1.15
    letterSpacing: "-0.02em"
  body-md:
    fontFamily: "Literata"
    fontSize: "17px"
    fontWeight: 400
    lineHeight: 1.5
    letterSpacing: "-0.02em"
  label-md:
    fontFamily: "Spline Sans Mono"
    fontSize: "0.75rem"
    fontWeight: 600
    lineHeight: 1
    letterSpacing: "0.08em"
rounded:
  none: "0px"
  md: "16px"
  lg: "24px"
  full: "9999px"
spacing:
  base: "8px"
  xs: "8px"
  sm: "16px"
  md: "22px"
  lg: "26px"
  xl: "40px"
  2xl: "64px"
  3xl: "80px"
  4xl: "104px"
components:
  color-reference-bg:
    backgroundColor: "{colors.bg}"
  color-reference-surface:
    backgroundColor: "{colors.surface}"
  color-reference-surface_solid:
    backgroundColor: "{colors.surface_solid}"
  color-reference-text:
    backgroundColor: "{colors.text}"
  color-reference-muted:
    backgroundColor: "{colors.muted}"
  color-reference-accent:
    backgroundColor: "{colors.accent}"
  color-reference-accent_2:
    backgroundColor: "{colors.accent_2}"
  color-reference-accent_soft:
    backgroundColor: "{colors.accent_soft}"
  color-reference-on_accent:
    backgroundColor: "{colors.on_accent}"
  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"
---

# Mossbank

## Overview

Mossbank treats interface surfaces like cultivated riverbank terrain: living, breathable, structured by growth rather than mechanical symmetry. Information sits in layers of paper fiber, sediment, and botanical residue; hierarchy emerges through natural strata, branching emphasis, and generous breathing room that implies stewardship and slow confidence over speed. A faithful modernization of Organic Naturalism.

### Values

- Cultivated calm over sterile optimization
- Material tactility over glossy abstraction
- Asymmetric growth over rigid repetition
- Readable warmth over corporate distance
- Interfaces that imply stewardship, care, and continuity

### Anti-Values

- Chrome-heavy futurism
- Perfectly rectilinear grids everywhere
- Cold fluorescent contrast
- Aggressive motion or gamified bounce
- Sharp synthetic edges disconnected from material texture

### Visual Character

- Important cards carry a clipped upper-right leaf-notch
- Large surfaces carry faint drifting topographic contour washes
- Headings use tapered branching vein underlines from layered gradients
- Controls are seed-pod capsules with soft inset rims and moss pressed states
- An asymmetric river layout pairs a broad content stream with a narrow observation rail

## 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 | `#F4EFE3` |
| surface | `#FBF7EE` |
| surface_solid | `#F0E9D8` |
| text | `#243026` |
| muted | `#6F756A` |
| accent | `#4E6B47` |
| accent_2 | `#B86C3A` |
| accent_soft | `#5F7E8A` |
| on_accent | `#FBF7EE` |
| success | `#557A46` |
| warning | `#C28A2E` |
| error | `#A64B45` |
| info | `#5F7E8A` |

## Typography

- **Headline-Lg**: Fraunces, 2.075rem, weight 700, line-height 1.1.
- **Headline-Md**: Fraunces, 1.66rem, weight 600, line-height 1.15.
- **Body-Md**: Literata, 17px, weight 400, line-height 1.5.
- **Label-Md**: Spline Sans Mono, 0.75rem, weight 600, line-height 1.

## Layout

### Spacing Tokens

- **Base**: `8px`
- **Xs**: `8px`
- **Sm**: `16px`
- **Md**: `22px`
- **Lg**: `26px`
- **Xl**: `40px`
- **2xl**: `64px`
- **3xl**: `80px`
- **4xl**: `104px`

### Grid

An asymmetric river grid on desktop: a broad content stream paired with a narrower observation rail, sections staggered as terraces. Grids use minmax(0,1fr) so children shrink rather than overflow.

### Breakpoints

The tablet band (768-1024) is its own layout: two-column grids and a compressed rail, never the mobile column stretched wide. At 768px the rail stacks below the stream and non-essential nav collapses. At 480px single-column terraces, full-width controls, scrollable tables.

### Whitespace

Large outer margins and deep panel padding, with tighter plant-like clustering inside cards. Whitespace reads like air pockets between stones: irregular at the macro level, disciplined at the micro level.

## Elevation & Depth

### Shadows

- **Sm**: 0 2px 10px rgba(36,48,38,0.08)
- **Md**: 0 14px 34px rgba(36,48,38,0.11)
- **Lg**: 0 26px 64px rgba(36,48,38,0.15)

## Shapes

### Rounded

- **None**: `0px`
- **Md**: `16px`
- **Lg**: `24px`
- **Full**: `9999px`

### Surfaces

- **Treatment**: parchment
- **Card Style**: borderless layered parchment cards with sediment-spot wash and a clipped upper-right leaf-notch
- **Bg Pattern**: drifting topographic contour lines and sediment spots

### Borders

- **Default Width**: 0px
- **Accent Width**: 4px
- **Style**: none
- **Character**: borderless; separation by surface, wash, and shadow; a soft fiber hairline only inside ghost controls and as the left root-marker stem

## Components

### Composition

Compose interfaces as interdependent ecological zones instead of stacked boxes: a main content stream for the core task, a narrow observation rail for context, and leaf-notched habitat cards for records. Let content bands widen and narrow like terraces instead of enforcing equal widths.

### Hierarchy

Lead with expressive Fraunces headings, then use mono species-label microcopy, badges, and vein dividers to guide scanning. Important actions sit in moss seed-pod capsules; secondary information recedes into quieter washes.

### Density

Moderate-to-airy. Generous internal padding and breathing room between macro sections, local clusters kept tight enough to feel cultivated. Dense data is softened with wash backgrounds, root markers, and rounded containment.

### Signature Patterns

- Large surfaces carry drifting topographic contour lines and sediment-spot washes as backgrounds
- Cards and modals use a clipped upper-right leaf-notch silhouette; never bordered
- Section headings use tapered branching vein underlines from layered gradients
- Buttons, toggles, radios and inputs use seed-pod capsule geometry with inset rims and pressed states
- Table rows and list items carry a left root-marker stem in an accent colour

## 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-019f706c-cf7c-71c0-a747-6e7441bfe20e/DESIGN.with-shadcn.md`.

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

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

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

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

## Do's and Don'ts

- Do Use warm parchment and moss as the dominant field, clay reserved for key moments
- Do Shape containers and controls so they feel grown, not machine-stamped
- Do Employ contour washes and layered sediment to suggest material depth
- Do Let headings feel literary while keeping body copy highly readable
- Do Anchor dense information with root markers and quiet dividers
- Don't Do not introduce glassmorphism, neon gradients, or metallic chrome
- Don't Do not square the interface into repetitive identical cards
- Don't Do not add card borders or clinical grayscale-only contrast
- Don't Do not over-animate controls; movement settles, never bounces
- Don't Do not let decorative organic motifs overpower legibility or task flow

## Imagery Direction

### Summary

Botanical field-note plates: pressed leaves and sedge, soil strata, water rings, seed labels, and muted topographic maps, in muted watercolor and fine ink on pressed-fiber parchment.

### Pairs With

fieldplate

### Technique

muted botanical watercolor and fine ink on parchment; drifting contour lines; sediment bands; soft water-ring stains

### Palette

muted moss green, warm bark brown, single clay-orange accent on warm parchment

### Reference Image File Ids

- fl-019f706b-7157-7290-874b-f7b3943ca1e7
- fl-019f706b-760c-7013-a7a4-1d74b7d3caac
- fl-019f706b-7bea-7b42-bada-41dd05e77e5d

```json
{
  "$schema": "https://ui.shadcn.com/schema/registry-item.json",
  "name": "mossbank",
  "type": "registry:theme",
  "title": "Mossbank shadcn Theme",
  "cssVars": {
    "theme": {},
    "light": {
      "background": "#F4EFE3",
      "foreground": "#243026",
      "card": "#FBF7EE",
      "card-foreground": "#243026",
      "popover": "#FBF7EE",
      "popover-foreground": "#243026",
      "primary": "#243026",
      "primary-foreground": "#ffffff",
      "secondary": "#f4f4f5",
      "secondary-foreground": "#111111",
      "muted": "#6F756A",
      "muted-foreground": "#243026",
      "accent": "#4E6B47",
      "accent-foreground": "#ffffff",
      "destructive": "#A64B45",
      "border": "rgba(36,48,38,0.08)",
      "input": "rgba(36,48,38,0.08)",
      "ring": "#4E6B47",
      "chart-1": "#243026",
      "chart-2": "#f4f4f5",
      "chart-3": "#4E6B47",
      "chart-4": "#557A46",
      "chart-5": "#C28A2E",
      "sidebar": "#FBF7EE",
      "sidebar-foreground": "#243026",
      "sidebar-primary": "#243026",
      "sidebar-primary-foreground": "#ffffff",
      "sidebar-accent": "#5F7E8A",
      "sidebar-accent-foreground": "#ffffff",
      "sidebar-border": "rgba(36,48,38,0.08)",
      "sidebar-ring": "#4E6B47",
      "radius": "16px"
    },
    "dark": {
      "background": "#0f1115",
      "foreground": "#f8fafc",
      "card": "#181b22",
      "card-foreground": "#f8fafc",
      "popover": "#181b22",
      "popover-foreground": "#f8fafc",
      "primary": "#243026",
      "primary-foreground": "#ffffff",
      "secondary": "#252a33",
      "secondary-foreground": "#f8fafc",
      "muted": "#252a33",
      "muted-foreground": "#a1a1aa",
      "accent": "#4E6B47",
      "accent-foreground": "#ffffff",
      "destructive": "#A64B45",
      "border": "#303642",
      "input": "#303642",
      "ring": "#4E6B47",
      "chart-1": "#243026",
      "chart-2": "#f4f4f5",
      "chart-3": "#4E6B47",
      "chart-4": "#557A46",
      "chart-5": "#C28A2E",
      "sidebar": "#181b22",
      "sidebar-foreground": "#f8fafc",
      "sidebar-primary": "#243026",
      "sidebar-primary-foreground": "#ffffff",
      "sidebar-accent": "#4E6B47",
      "sidebar-accent-foreground": "#ffffff",
      "sidebar-border": "#303642",
      "sidebar-ring": "#4E6B47",
      "radius": "16px"
    }
  },
  "meta": {
    "source": "katagami",
    "languageId": "en-019f706c-cf7c-71c0-a747-6e7441bfe20e",
    "slug": "mossbank",
    "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_soft",
        "bg",
        "border",
        "error",
        "info",
        "muted",
        "on_accent",
        "success",
        "surface",
        "surface_solid",
        "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"
      ],
      "shadows": [
        "lg",
        "md",
        "sm"
      ],
      "spacing": [
        "base",
        "scale"
      ],
      "surfaces": [
        "bg_pattern",
        "card_style",
        "treatment"
      ],
      "borders": [
        "accent_width",
        "character",
        "default_width",
        "style"
      ],
      "motion": [
        "duration",
        "easing",
        "philosophy"
      ]
    }
  }
}
```