# TASK-000E: Typography & Spacing Tokens - CHANGELOG

## Overview

Added comprehensive typography and spacing token systems to enable consistent sizing, spacing, and visual rhythm across the application.

**Status:** ✅ COMPLETE  
**Date:** December 30, 2025  
**Effort:** ~30 minutes  
**Risk:** Low

---

## Changes Made

### 1. Enhanced Typography System

**File:** `packages/noodl-core-ui/src/styles/custom-properties/fonts.css`

**Added:**

- ✅ Font size scale (xs → 3xl) from 10px to 24px
- ✅ Line height tokens (none → loose)
- ✅ Letter spacing tokens (tighter → widest)
- ✅ Semantic text style presets (body, small, label, code)
- ✅ Updated font families with fallbacks
- ✅ Added medium (500) font weight

**New Tokens:**

```css
/* Font sizes */
--font-size-xs, --font-size-sm, --font-size-base, --font-size-md,
--font-size-lg, --font-size-xl, --font-size-2xl, --font-size-3xl

/* Line heights */
--line-height-none, --line-height-tight, --line-height-snug,
--line-height-normal, --line-height-relaxed, --line-height-loose

/* Letter spacing */
--letter-spacing-tighter → --letter-spacing-widest

/* Semantic styles */
--text-body-*, --text-small-*, --text-label-*, --text-code-*
```

### 2. New Spacing System

**File Created:** `packages/noodl-core-ui/src/styles/custom-properties/spacing.css`

**Added:**

- ✅ 4px-based spacing scale (0 → 96px)
- ✅ Semantic spacing aliases (panel, card, button, input, icon)
- ✅ Border radius scale (none → full)
- ✅ Shadow system (sm → popup)
- ✅ Transition timing & easing functions
- ✅ Z-index scale for layering

**Token Categories:**

```css
/* Spacing scale: 31 tokens from 0 to 96px */
--spacing-0, --spacing-px, --spacing-0-5, --spacing-1 ... --spacing-24

/* Semantic spacing */
--spacing-panel-*, --spacing-card-*, --spacing-section-*,
--spacing-input-*, --spacing-button-*, --spacing-icon-*

/* Border radius: 9 tokens */
--radius-none, --radius-sm, --radius-default ... --radius-full

/* Shadows: 8 tokens */
--shadow-sm, --shadow-default ... --shadow-popup

/* Transitions: 7 tokens */
--transition-fast, --transition-default, --transition-slow,
--transition-ease, --transition-ease-in/out/in-out

/* Z-index: 8 tokens */
--z-base, --z-dropdown, --z-sticky ... --z-tooltip
```

### 3. Editor Spacing Copy

**File Created:** `packages/noodl-editor/src/editor/src/styles/custom-properties/spacing.css`

- Identical copy for editor package consistency

### 4. Import Wiring

**Updated Files:**

✅ `packages/noodl-core-ui/.storybook/preview.ts`

```typescript
import '../src/styles/custom-properties/spacing.css';
```

✅ `packages/noodl-editor/src/editor/index.ts`

```typescript
import '../editor/src/styles/custom-properties/spacing.css';
```

✅ `packages/noodl-editor/src/frames/viewer-frame/index.js`

```javascript
import '../../editor/src/styles/custom-properties/spacing.css';
```

---

## Verification

### ✅ Type Safety

- No TypeScript compilation errors
- All CSS imports resolve correctly

### ✅ Token Availability

- All tokens accessible via `var(--token-name)`
- No missing variable warnings

### ✅ Build System

- CSS files properly imported in all entry points
- Storybook preview includes spacing tokens
- Editor and viewer frame have access to tokens

---

## Usage Examples

### Typography

```scss
.title {
  font-family: var(--font-family);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
}

.code {
  font-family: var(--font-family-code);
  font-size: var(--font-size-sm);
}
```

### Spacing & Layout

```scss
.panel {
  padding: var(--spacing-panel-padding);
  gap: var(--spacing-panel-gap);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.button {
  padding: var(--spacing-button-padding-y) var(--spacing-button-padding-x);
  gap: var(--spacing-button-gap);
  transition: all var(--transition-default) var(--transition-ease);
}
```

---

## Next Steps

These tokens are now ready for use in:

✅ **TASK-000F:** Component Buttons & Inputs

- Apply spacing tokens to button padding
- Use font tokens for button text
- Implement consistent radius/shadows

✅ **TASK-000G:** Component Dialogs & Panels

- Use semantic spacing for layouts
- Apply shadow tokens for elevation
- Implement consistent z-index layering

---

## Token Summary

**Total Tokens Added:** ~85 tokens

| Category       | Count | Base                  |
| -------------- | ----- | --------------------- |
| Font Sizes     | 8     | 10px → 24px           |
| Font Weights   | 5     | 300 → 700             |
| Line Heights   | 6     | 1 → 2                 |
| Letter Spacing | 6     | -0.05em → 0.1em       |
| Semantic Text  | 12    | Preset combinations   |
| Spacing Scale  | 31    | 0px → 96px (4px base) |
| Semantic Space | 16    | Component aliases     |
| Border Radius  | 9     | 0 → 9999px            |
| Shadows        | 8     | sm → popup            |
| Transitions    | 7     | Timing & easing       |
| Z-Index        | 8     | 0 → 700               |

---

## Files Modified

### Created (3)

- `packages/noodl-core-ui/src/styles/custom-properties/spacing.css`
- `packages/noodl-editor/src/editor/src/styles/custom-properties/spacing.css`
- `dev-docs/tasks/phase-3-editor-ux-overhaul/TASK-000-styles-overhaul/TASK-000E-typography-spacing/CHANGELOG.md`

### Modified (4)

- `packages/noodl-core-ui/src/styles/custom-properties/fonts.css`
- `packages/noodl-core-ui/.storybook/preview.ts`
- `packages/noodl-editor/src/editor/index.ts`
- `packages/noodl-editor/src/frames/viewer-frame/index.js`

---

## Foundation Health

✅ All tokens follow naming conventions  
✅ Semantic aliases point to base tokens  
✅ No hardcoded values in semantic tokens  
✅ Consistent 4px spacing rhythm  
✅ Comprehensive documentation in CSS comments  
✅ TypeScript build passes  
✅ Ready for component implementation

---

**Task Status:** ✅ COMPLETE - Typography & Spacing Foundation Established