Master Spec

Establish the design system documentation for all course presentations.

Frontmatter

context: main
allowed-tools: Read, Write, Edit, Glob, Grep, AskUserQuestion

Prerequisites

• course-plan.md must exist
• Institution config should be defined
• Understanding of delivery context (classroom size, Zoom streaming)

Instructions

You are creating the master presentation specification - the design system that governs all presentations in the course. This document ensures visual consistency and readability across all materials.

Step 1: Review Context

Read these files to understand requirements:

• course-plan.md - Visualization guidelines, principles
• src/config/institution.ts - Brand colors
• src/config/course.ts - Theme definitions
• .claude/rpiv-config.json - Validation rules

Step 2: Define Color Palette

Document the complete color system:

1. Institution Colors: Primary and accent from brand
2. Theme Colors: One per framework theme (if applicable)
3. Semantic Colors: Success, warning, error, info
4. Neutral Colors: Background, text, borders
5. CSS Variables: How to reference colors

Step 3: Define Typography

Establish font system:

1. Font Families: Headings, body, code
2. Font Loading: Google Fonts or self-hosted
3. Type Scale: All sizes from 1rem to 3rem
4. Minimum Sizes: CRITICAL - classroom readability requirements
5. Line Heights: For different contexts

CRITICAL Requirements:

• Titles: minimum 2.5rem (40px)
• Body: minimum 1.5rem (24px)
• Labels: minimum 1.25rem (20px)
• Absolute minimum: 1rem (16px)

Step 4: Define Layout System

Document slide types and their layouts:

Step 5: Define Component Guidelines

For each UI component:

• Progress bar
• TOC overlay
• Appendix navigation
• Keyboard hints
• Slide transitions
• D3 visualization containers

Step 6: Define D3 Visualization Standards

Critical for consistency:

1. Responsive Pattern:

   • Use viewBox, not fixed dimensions
   • Calculate positions as proportions
   • Scale with container

2. Font Sizes:

   • Axis labels: 1.25rem minimum
   • Data labels: 1.25rem minimum
   • Legends: 1.25rem minimum

3. Animation Standards:

   • Default duration: 800ms
   • Easing: d3.easeCubicOut
   • Stagger delay: 200ms

4. Color Usage:

   • Use theme colors
   • Maintain contrast ratios

Step 7: Define Keyboard Navigation

Document standard shortcuts:

• Arrow keys: Navigate slides
• T: Toggle TOC
• A: Toggle Appendix
• S: Toggle Syllabus
• F: Toggle fullscreen
• 0-9: Jump to slide

Step 8: Write Master Spec

Create master-presentation-spec.md with comprehensive documentation.

Output Specification

This skill produces:

• Primary Output: master-presentation-spec.md
• Format: Markdown with CSS examples and code snippets
• Dependencies: Required before any presentation-build

Quality Criteria

A good master spec:

• Has complete color palette with CSS variables
• Documents all minimum font sizes explicitly
• Includes code examples for every pattern
• Shows responsive D3 template
• Documents all keyboard shortcuts
• Provides checklist for code review

Examples

Example: Color Palette Section

## Color Palette

### Institution Colors

| Name | Hex | CSS Variable | Usage |
|------|-----|--------------|-------|
| Primary Blue | #356093 | `--ncssm-blue` | Headers, links |
| Accent Gold | #d4a028 | `--ncssm-gold` | Highlights |

### Theme Colors (DE Framework)

| Theme | Color | CSS Variable |
|-------|-------|--------------|
| 1. Customer | #356093 | `--theme-1-customer` |
| 2. Value | #7c3aed | `--theme-2-value` |
| 3. Acquire | #059669 | `--theme-3-acquire` |
| 4. Money | #d4a028 | `--theme-4-money` |
| 5. Build | #dc2626 | `--theme-5-build` |
| 6. Scale | #0891b2 | `--theme-6-scale` |

### CSS Variables

\`\`\`css
:root {
  /* Institution */
  --ncssm-blue: #356093;
  --ncssm-gold: #d4a028;

  /* Current theme (set per presentation) */
  --theme-color: var(--theme-1-customer);

  /* Semantic */
  --color-success: #059669;
  --color-warning: #d97706;
  --color-error: #dc2626;
}
\`\`\`

Example: Typography Section

## Typography

### Font Families

\`\`\`css
:root {
  --font-heading: 'Inter', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-code: 'JetBrains Mono', monospace;
}
\`\`\`

### Type Scale (CRITICAL)

| Level | Size | Usage | Minimum |
|-------|------|-------|---------|
| Display | 3rem | Hero titles | 2.5rem |
| H1 | 2.5rem | Slide titles | 2.5rem |
| H2 | 2rem | Section headers | 1.5rem |
| Body | 1.5rem | Main content | 1.5rem |
| Label | 1.25rem | Charts, captions | 1.25rem |
| Small | 1rem | Metadata only | 1rem |

### Code Review Rules

\`\`\`javascript
// REJECT - Too small
.attr('font-size', '12px')
.style('font-size', '0.8rem')

// ACCEPT
.attr('font-size', '1.25rem')
.style('font-size', '1.5rem')
\`\`\`