Halation

# Halation

## Philosophy

Halation is the glow that escapes a bright edge. One confident hairline draws the form and colour blooms out from it like mist over a near-white field. Emphasis is a glow, never a block. The page is one full-bleed Bloomline picture with the headline on its calm ground, one floating glass panel, one quiet form and one closing sentence, in a serif with a soft hand and a clean humanist sans.

### Values

- Atmosphere over decoration
- Glow, not fill, for emphasis
- One line draws the form
- Calm pacing with room to breathe
- Honest status: a word beside every colour

### Anti-Values

- Dense dashboards
- Hard borders and drop shadows
- Stock quotes, stat rows and three matching cards
- Scrims and veils over the picture
- Saturated solid fields

### Visual Character

- A full-bleed hairline songbird whose body dissolves into periwinkle and mint blooms, with the headline on the calm ground beside it.
- Blurred radial blooms behind the panel and the closing sentence.
- One translucent white glass panel with a 24px radius and a soft indigo shadow.
- One italic accent word that glows in #4F5BDB.
- Pill buttons in #4F5BDB with a halo shadow that widens on hover.

### Lineage

> Revised in place from the live Halation (en-019efa16-d17d-7320-a992-4f271c14b4c2): the same periwinkle and mint bloom family, glass and hairline bird, with a deeper accent for AA, new fonts and a calmer page order.

## Tokens

### Colors

| Name | Value |
|------|-------|
| bg | `#F6F8FF` |
| surface | `rgba(255,255,255,0.78)` |
| surface_solid | `#FFFFFF` |
| text | `#20283F` |
| muted | `#5B6586` |
| border | `rgba(79,91,219,0.16)` |
| accent | `#4F5BDB` |
| accent_2 | `#8ED8D2` |
| accent_soft | `#B8C2FF` |
| on_accent | `#FFFFFF` |
| success | `#1D7A70` |
| warning | `#8A5A12` |
| error | `#B8325A` |
| info | `#4F5BDB` |

### Derived

- **Bloom Periwinkle**: radial wash of rgba(111,124,255,0.42) fading to transparent at 65%, blurred 90px
- **Bloom Mint**: radial wash of rgba(142,216,210,0.45) fading to transparent at 65%, blurred 90px
- **Glass Blur**: backdrop blur 18px
- **Focus Glow**: 0 0 0 2px accent plus 0 0 28px rgba(111,124,255,0.35)
- **Em Glow**: text-shadow 0 0 36px rgba(111,124,255,0.45) on the one accent word

### Typography

- **Heading Font**: Fanwood Text
- **Body Font**: Kulim Park
- **Heading Weight**: 400
- **Body Weight**: 400
- **Button Weight**: 700
- **Heading Transform**: none
- **Letter Spacing**: -0.01em
- **Base Size**: 17px
- **Line Height**: 1.62
- **Scale**: ["17px","18px","22px","28px","34px","48px","60px","78px","104px"]
- **Google Fonts Url**: https://fonts.googleapis.com/css2?family=Fanwood+Text:ital@0;1&family=Kulim+Park:wght@300;400;600;700&display=swap

### Radii

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

### Shadows

- **Sm**: 0 14px 40px rgba(79,91,219,0.35)
- **Md**: 0 24px 60px rgba(79,91,219,0.12)
- **Lg**: 0 36px 90px rgba(79,91,219,0.14)

### Spacing

- **Base**: 8px
- **Scale**: [4,8,12,16,24,32,48,64,96,150]

### Surfaces

- **Treatment**: glass
- **Card Style**: one translucent white panel with backdrop blur over blurred colour blooms; never nested
- **Bg Pattern**: blurred radial colour blooms

### Borders

- **Default Width**: 0
- **Accent Width**: 0
- **Style**: none
- **Character**: No borders. Edges are a 1px luminous ring made of a box-shadow in the border colour on fields and chips only, never a rule or a frame.

### Motion

- **Duration**: 600ms
- **Easing**: cubic-bezier(0.22,1,0.36,1)
- **Philosophy**: Deliberate. The settled page is complete with no JS; hover lifts a button 2px and widens its glow. Everything is skipped under prefers-reduced-motion.

### Controls

- **Height**: 54px (52 for fields, 40 for chips)
- **Radius**: 9999px on buttons and chips, 16px on fields, 24px on panels
- **Glow**: focus lights the field's edge in accent plus a soft halo

## Rules

### Composition

- Open with one full-bleed hero picture and put the headline on its calm ground, never over the bird.
- Give a view one glass panel at most, floating on a bloom, never inside another panel.
- Let blooms sit behind content and fade to nothing at their edges; they are atmosphere, not blocks.
- Close with one sentence, centred, and one action.

### Hierarchy

- Fanwood Text 400 for every headline, 48 to 104px on the hero and 34 to 78px below, with one italic accent word glowing in the accent.
- Kulim Park 17px and up for prose in two tones: ink for the fact, muted for the reassurance.
- Hierarchy comes from scale and space before colour; status is always a word plus a glow dot.

### Density

Low. 80 to 150px between sections on desktop, a few facts per panel, lines held to about 26em.

### Signature

The halation bloom: a blurred radial colour wash sits behind a word or panel and fades to nothing; emphasis arrives as glow (a soft shadow on the italic word, a halo under the primary button, a lit field edge) and never as a hard fill.

## Layout

### Grid

One centred wrap at 1180px with 24 to 48px side padding; the hero spans the full viewport and its copy aligns to the wrap edge. The panel is two columns (1.15fr copy, 1fr drawing), the in-use section two columns (copy, form).

### Whitespace

Structural: 80 to 150px section padding, 28px under the lede, 36 to 40px above a button.

### Density

low

### Responsive

Under 900px the hero swaps to a tall picture with the copy above it, panels and the form stack to one column. Renders from 390px to 2560px; content caps and centres, only the hero spans the viewport.

### Breakpoints

- **Desktop**: default
- **Tablet**: 900px
- **Mobile**: 390px

## Guidance

### Do

- Use colour as atmosphere and emphasis as glow.
- Put the headline on the hero's calm ground and keep the bird clear of the letters.
- Keep one glass panel, one form and one closing sentence.
- Pair every status colour with a word.
- Paint the hero from a Bloomline picture through var(--hero-image).

### Don't

- Don't add eyebrow labels, stat rows, stock quotes or three matching cards.
- Don't lay a gradient scrim or a multiply veil over the hero.
- Don't fill an area with a saturated solid colour.
- Don't use a hard border, a thick outline or a hard drop shadow.
- Don't nest panels.

### Accessibility

Body 17px and up. Ink #20283F on #F6F8FF is 13.8:1; muted #5B6586 is 5.4:1; the button label white on #4F5BDB is 5.45:1; the status inks #1D7A70, #8A5A12 and #B8325A all clear 4.8:1 on the ground and each sits beside a word. Focus lights the field edge in the accent with a halo. The settled page renders with no JS and motion respects prefers-reduced-motion.

### Usage Context

Calm editorial products, studios, journals and wellness or fashion sites that want a luminous gallery-wall feel rather than a dense dashboard.

## Imagery Direction

### Pairs With

bloomline

### Art Style Id

en-019efa08-950f-7d72-a8cf-f5dca1311660

### Summary

A hairline songbird in a single ink contour whose body dissolves into feathered periwinkle and seafoam blooms on a near-white #F6F8FF ground, composed with an empty calm area for the headline: bird on the right 45 percent on desktop, on the bottom half on phones.

### Subjects

- a songbird in flight
- feathers and botanical stems
- single-line gestures

### Usage

One full-bleed hero painted with var(--hero-image): a wide picture with the bird right and calm ground left, and a tall picture with the bird low and calm ground above for phones. No scrim, panel or fade over it.

### Avoid

A scrim, multiply veil or text over the bird; coloured patches that read as solid fills; photographic rendering.

---
version: "alpha"
name: "Halation"
description: "Halation is the glow that escapes a bright edge. One confident hairline draws the form and colour blooms out from it like mist over a near-white field. Emphasis is a glow, never a block. The page is one full-bleed Bloomline picture with..."
colors:
  bg: "#F6F8FF"
  surface_solid: "#FFFFFF"
  text: "#20283F"
  muted: "#5B6586"
  accent: "#4F5BDB"
  accent_2: "#8ED8D2"
  accent_soft: "#B8C2FF"
  on_accent: "#FFFFFF"
  success: "#1D7A70"
  warning: "#8A5A12"
  error: "#B8325A"
  info: "#4F5BDB"
typography:
  headline-lg:
    fontFamily: "Fanwood Text"
    fontSize: "2.075rem"
    fontWeight: 700
    lineHeight: 1.1
    letterSpacing: "-0.01em"
  headline-md:
    fontFamily: "Fanwood Text"
    fontSize: "1.66rem"
    fontWeight: 600
    lineHeight: 1.15
    letterSpacing: "-0.01em"
  body-md:
    fontFamily: "Kulim Park"
    fontSize: "17px"
    fontWeight: 400
    lineHeight: 1.5
    letterSpacing: "-0.01em"
  label-md:
    fontFamily: "Kulim Park"
    fontSize: "0.75rem"
    fontWeight: 600
    lineHeight: 1
    letterSpacing: "0.08em"
rounded:
  none: "0px"
  md: "16px"
  lg: "24px"
  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: "150px"
components:
  color-reference-bg:
    backgroundColor: "{colors.bg}"
  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: "{colors.on_accent}"
    typography: "{typography.label-md}"
    rounded: "{rounded.md}"
    padding: "{spacing.md}"
---

# Halation

## Overview

Halation is the glow that escapes a bright edge. One confident hairline draws the form and colour blooms out from it like mist over a near-white field. Emphasis is a glow, never a block. The page is one full-bleed Bloomline picture with the headline on its calm ground, one floating glass panel, one quiet form and one closing sentence, in a serif with a soft hand and a clean humanist sans.

### Values

- Atmosphere over decoration
- Glow, not fill, for emphasis
- One line draws the form
- Calm pacing with room to breathe
- Honest status: a word beside every colour

### Anti-Values

- Dense dashboards
- Hard borders and drop shadows
- Stock quotes, stat rows and three matching cards
- Scrims and veils over the picture
- Saturated solid fields

### Visual Character

- A full-bleed hairline songbird whose body dissolves into periwinkle and mint blooms, with the headline on the calm ground beside it.
- Blurred radial blooms behind the panel and the closing sentence.
- One translucent white glass panel with a 24px radius and a soft indigo shadow.
- One italic accent word that glows in #4F5BDB.
- Pill buttons in #4F5BDB with a halo shadow that widens on hover.

### Lineage

> Revised in place from the live Halation (en-019efa16-d17d-7320-a992-4f271c14b4c2): the same periwinkle and mint bloom family, glass and hairline bird, with a deeper accent for AA, new fonts and a calmer page order.

## 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 | `#F6F8FF` |
| surface_solid | `#FFFFFF` |
| text | `#20283F` |
| muted | `#5B6586` |
| accent | `#4F5BDB` |
| accent_2 | `#8ED8D2` |
| accent_soft | `#B8C2FF` |
| on_accent | `#FFFFFF` |
| success | `#1D7A70` |
| warning | `#8A5A12` |
| error | `#B8325A` |
| info | `#4F5BDB` |

## Typography

Load the fonts from Google Fonts: https://fonts.googleapis.com/css2?family=Fanwood+Text:ital@0;1&family=Kulim+Park:wght@300;400;600;700&display=swap

- **Headline-Lg**: Fanwood Text, 2.075rem, weight 700, line-height 1.1.
- **Headline-Md**: Fanwood Text, 1.66rem, weight 600, line-height 1.15.
- **Body-Md**: Kulim Park, 17px, weight 400, line-height 1.5.
- **Label-Md**: Kulim Park, 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**: `150px`

### Grid

One centred wrap at 1180px with 24 to 48px side padding; the hero spans the full viewport and its copy aligns to the wrap edge. The panel is two columns (1.15fr copy, 1fr drawing), the in-use section two columns (copy, form).

### Whitespace

Structural: 80 to 150px section padding, 28px under the lede, 36 to 40px above a button.

### Density

low

### Responsive

Under 900px the hero swaps to a tall picture with the copy above it, panels and the form stack to one column. Renders from 390px to 2560px; content caps and centres, only the hero spans the viewport.

### Breakpoints

- **Desktop**: default
- **Tablet**: 900px
- **Mobile**: 390px

## Elevation & Depth

### Shadows

- **Sm**: 0 14px 40px rgba(79,91,219,0.35)
- **Md**: 0 24px 60px rgba(79,91,219,0.12)
- **Lg**: 0 36px 90px rgba(79,91,219,0.14)

## Shapes

### Rounded

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

### Surfaces

- **Treatment**: glass
- **Card Style**: one translucent white panel with backdrop blur over blurred colour blooms; never nested
- **Bg Pattern**: blurred radial colour blooms

### Borders

- **Default Width**: 0
- **Accent Width**: 0
- **Style**: none
- **Character**: No borders. Edges are a 1px luminous ring made of a box-shadow in the border colour on fields and chips only, never a rule or a frame.

## Components

### Composition

- Open with one full-bleed hero picture and put the headline on its calm ground, never over the bird.
- Give a view one glass panel at most, floating on a bloom, never inside another panel.
- Let blooms sit behind content and fade to nothing at their edges; they are atmosphere, not blocks.
- Close with one sentence, centred, and one action.

### Hierarchy

- Fanwood Text 400 for every headline, 48 to 104px on the hero and 34 to 78px below, with one italic accent word glowing in the accent.
- Kulim Park 17px and up for prose in two tones: ink for the fact, muted for the reassurance.
- Hierarchy comes from scale and space before colour; status is always a word plus a glow dot.

### Density

Low. 80 to 150px between sections on desktop, a few facts per panel, lines held to about 26em.

### Signature

The halation bloom: a blurred radial colour wash sits behind a word or panel and fades to nothing; emphasis arrives as glow (a soft shadow on the italic word, a halo under the primary button, a lit field edge) and never as a hard fill.

## 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-01a11301-0432-7801-b605-9da96034f800/DESIGN.with-shadcn.md`.

Machine-readable companions for automation: `/language/en-01a11301-0432-7801-b605-9da96034f800/shadcn.json` (registry theme), `/language/en-01a11301-0432-7801-b605-9da96034f800/shadcn-components.md` (component recipes) and `/language/en-01a11301-0432-7801-b605-9da96034f800/shadcn-shots.json` (preview shots). The human-facing handoff is still 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 colour as atmosphere and emphasis as glow.
- Do Put the headline on the hero's calm ground and keep the bird clear of the letters.
- Do Keep one glass panel, one form and one closing sentence.
- Do Pair every status colour with a word.
- Do Paint the hero from a Bloomline picture through var(--hero-image).
- Don't Don't add eyebrow labels, stat rows, stock quotes or three matching cards.
- Don't Don't lay a gradient scrim or a multiply veil over the hero.
- Don't Don't fill an area with a saturated solid colour.
- Don't Don't use a hard border, a thick outline or a hard drop shadow.
- Don't Don't nest panels.

### Accessibility

Body 17px and up. Ink #20283F on #F6F8FF is 13.8:1; muted #5B6586 is 5.4:1; the button label white on #4F5BDB is 5.45:1; the status inks #1D7A70, #8A5A12 and #B8325A all clear 4.8:1 on the ground and each sits beside a word. Focus lights the field edge in the accent with a halo. The settled page renders with no JS and motion respects prefers-reduced-motion.

### Usage Context

Calm editorial products, studios, journals and wellness or fashion sites that want a luminous gallery-wall feel rather than a dense dashboard.

## Imagery Direction

### Pairs With

bloomline

### Art Style Id

en-019efa08-950f-7d72-a8cf-f5dca1311660

### Summary

A hairline songbird in a single ink contour whose body dissolves into feathered periwinkle and seafoam blooms on a near-white #F6F8FF ground, composed with an empty calm area for the headline: bird on the right 45 percent on desktop, on the bottom half on phones.

### Subjects

- a songbird in flight
- feathers and botanical stems
- single-line gestures

### Usage

One full-bleed hero painted with var(--hero-image): a wide picture with the bird right and calm ground left, and a tall picture with the bird low and calm ground above for phones. No scrim, panel or fade over it.

### Avoid

A scrim, multiply veil or text over the bird; coloured patches that read as solid fills; photographic rendering.

```json
{
  "$schema": "https://ui.shadcn.com/schema/registry-item.json",
  "name": "halation",
  "type": "registry:theme",
  "title": "Halation shadcn Theme",
  "cssVars": {
    "theme": {},
    "light": {
      "background": "#F6F8FF",
      "foreground": "#20283F",
      "card": "rgba(255,255,255,0.78)",
      "card-foreground": "#20283F",
      "popover": "rgba(255,255,255,0.78)",
      "popover-foreground": "#20283F",
      "primary": "#20283F",
      "primary-foreground": "#ffffff",
      "secondary": "#f4f4f5",
      "secondary-foreground": "#111111",
      "muted": "#5B6586",
      "muted-foreground": "#20283F",
      "accent": "#4F5BDB",
      "accent-foreground": "#ffffff",
      "destructive": "#B8325A",
      "border": "rgba(79,91,219,0.16)",
      "input": "rgba(79,91,219,0.16)",
      "ring": "#4F5BDB",
      "chart-1": "#20283F",
      "chart-2": "#f4f4f5",
      "chart-3": "#4F5BDB",
      "chart-4": "#1D7A70",
      "chart-5": "#8A5A12",
      "sidebar": "rgba(255,255,255,0.78)",
      "sidebar-foreground": "#20283F",
      "sidebar-primary": "#20283F",
      "sidebar-primary-foreground": "#ffffff",
      "sidebar-accent": "#4F5BDB",
      "sidebar-accent-foreground": "#ffffff",
      "sidebar-border": "rgba(79,91,219,0.16)",
      "sidebar-ring": "#4F5BDB",
      "radius": "16px"
    },
    "dark": {
      "background": "#0f1115",
      "foreground": "#f8fafc",
      "card": "#181b22",
      "card-foreground": "#f8fafc",
      "popover": "#181b22",
      "popover-foreground": "#f8fafc",
      "primary": "#20283F",
      "primary-foreground": "#ffffff",
      "secondary": "#252a33",
      "secondary-foreground": "#f8fafc",
      "muted": "#252a33",
      "muted-foreground": "#a1a1aa",
      "accent": "#4F5BDB",
      "accent-foreground": "#ffffff",
      "destructive": "#B8325A",
      "border": "#303642",
      "input": "#303642",
      "ring": "#4F5BDB",
      "chart-1": "#20283F",
      "chart-2": "#f4f4f5",
      "chart-3": "#4F5BDB",
      "chart-4": "#1D7A70",
      "chart-5": "#8A5A12",
      "sidebar": "#181b22",
      "sidebar-foreground": "#f8fafc",
      "sidebar-primary": "#20283F",
      "sidebar-primary-foreground": "#ffffff",
      "sidebar-accent": "#4F5BDB",
      "sidebar-accent-foreground": "#ffffff",
      "sidebar-border": "#303642",
      "sidebar-ring": "#4F5BDB",
      "radius": "16px"
    }
  },
  "meta": {
    "source": "katagami",
    "languageId": "en-01a11301-0432-7801-b605-9da96034f800",
    "slug": "halation",
    "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"
      ],
      "derived": [
        "bloom_mint",
        "bloom_periwinkle",
        "em_glow",
        "focus_glow",
        "glass_blur"
      ],
      "typography": [
        "base_size",
        "body_font",
        "body_weight",
        "button_weight",
        "google_fonts_url",
        "heading_font",
        "heading_transform",
        "heading_weight",
        "letter_spacing",
        "line_height",
        "scale"
      ],
      "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"
      ],
      "controls": [
        "glow",
        "height",
        "radius"
      ]
    }
  }
}
```