# Design System Documentation

## System Info

| Field | Value |
|-------|-------|
| **Name** | [Design System Name] |
| **Version** | [X.Y.Z] |
| **Owner** | [Team/Person] |
| **Status** | Active / Beta / Deprecated |
| **Last Updated** | YYYY-MM-DD |

---

## Design Principles

The following principles guide all design decisions in this system:

1. **[Principle 1 Name]** - [One sentence description. Example: "Clarity over cleverness - every element should have an obvious purpose."]

2. **[Principle 2 Name]** - [One sentence description. Example: "Consistency breeds confidence - similar actions should look and behave the same."]

3. **[Principle 3 Name]** - [One sentence description. Example: "Accessible by default - every component must meet WCAG 2.1 AA standards."]

4. **[Principle 4 Name]** - [One sentence description. Example: "Progressive disclosure - show only what is needed, reveal complexity on demand."]

---

## Color Palette

### Brand Colors
| Name | Hex | RGB | Usage |
|------|-----|-----|-------|
| Primary | #[XXXXXX] | rgb(X, X, X) | Primary actions, links, key UI elements |
| Secondary | #[XXXXXX] | rgb(X, X, X) | Secondary actions, accents |
| Accent | #[XXXXXX] | rgb(X, X, X) | Highlights, badges, notifications |

### Neutral Colors
| Name | Hex | Usage |
|------|-----|-------|
| Gray-900 | #[XXXXXX] | Primary text |
| Gray-700 | #[XXXXXX] | Secondary text |
| Gray-500 | #[XXXXXX] | Placeholder text, disabled states |
| Gray-300 | #[XXXXXX] | Borders, dividers |
| Gray-100 | #[XXXXXX] | Backgrounds, hover states |
| White | #FFFFFF | Page background, card background |

### Semantic Colors
| Name | Hex | Usage |
|------|-----|-------|
| Success | #[XXXXXX] | Success messages, positive indicators |
| Warning | #[XXXXXX] | Warning messages, caution indicators |
| Error | #[XXXXXX] | Error messages, destructive actions |
| Info | #[XXXXXX] | Informational messages, tips |

### Accessibility
- All text colors must meet WCAG 2.1 AA contrast ratio (4.5:1 for normal text, 3:1 for large text)
- Test with color blindness simulators
- Never use color as the only indicator of state

---

## Typography Scale

### Font Family
- **Primary:** [Font Name] (headings and body)
- **Monospace:** [Font Name] (code blocks, technical content)
- **Fallback Stack:** [System font stack]

### Type Scale

| Name | Size | Weight | Line Height | Usage |
|------|------|--------|-------------|-------|
| Display | 48px / 3rem | Bold (700) | 1.2 | Hero headings |
| H1 | 36px / 2.25rem | Bold (700) | 1.25 | Page titles |
| H2 | 28px / 1.75rem | Semibold (600) | 1.3 | Section headings |
| H3 | 22px / 1.375rem | Semibold (600) | 1.35 | Subsection headings |
| H4 | 18px / 1.125rem | Medium (500) | 1.4 | Card titles, labels |
| Body Large | 18px / 1.125rem | Regular (400) | 1.6 | Lead paragraphs |
| Body | 16px / 1rem | Regular (400) | 1.5 | Default body text |
| Body Small | 14px / 0.875rem | Regular (400) | 1.5 | Secondary text, captions |
| Caption | 12px / 0.75rem | Regular (400) | 1.4 | Labels, metadata |

---

## Spacing System

### Base Unit: 4px

| Token | Value | Usage |
|-------|-------|-------|
| space-1 | 4px | Tight spacing (icon padding) |
| space-2 | 8px | Compact elements (inline items) |
| space-3 | 12px | Related elements (form field gaps) |
| space-4 | 16px | Default spacing (paragraph gaps) |
| space-5 | 20px | Group spacing (card padding) |
| space-6 | 24px | Section spacing |
| space-8 | 32px | Large section gaps |
| space-10 | 40px | Page section dividers |
| space-12 | 48px | Major layout sections |
| space-16 | 64px | Page-level spacing |

### Layout Spacing
- **Page margin:** space-6 (mobile), space-8 (tablet), space-12 (desktop)
- **Card padding:** space-5
- **Form field gap:** space-3
- **Section gap:** space-10

---

## Component Library

### Component Status Legend
- **Stable** - Production ready, fully documented and tested
- **Beta** - Functional but may change, use with awareness
- **Deprecated** - Scheduled for removal, migrate to replacement
- **Planned** - On roadmap, not yet available

### Components

| Component | Status | Description | Variants |
|-----------|--------|-------------|----------|
| Button | Stable | Primary action triggers | Primary, Secondary, Tertiary, Danger, Ghost |
| Input | Stable | Text input fields | Default, Error, Disabled, With icon |
| Select | Stable | Dropdown selection | Single, Multi, Searchable |
| Checkbox | Stable | Multi-select toggle | Default, Indeterminate, Disabled |
| Radio | Stable | Single-select option | Default, Disabled |
| Toggle | Stable | Binary on/off switch | Default, With label |
| Modal | Stable | Overlay dialog | Small, Medium, Large, Fullscreen |
| Toast | Stable | Temporary notification | Success, Error, Warning, Info |
| Card | Stable | Content container | Default, Interactive, Elevated |
| Badge | Stable | Status indicator | Solid, Outline, Dot |
| Avatar | Stable | User representation | Image, Initials, Icon |
| Table | Beta | Data display grid | Default, Sortable, Selectable |
| Tabs | Beta | Content organization | Default, Underline, Pill |
| Tooltip | Stable | Contextual information | Default, Rich content |
| [New Component] | Planned | [Description] | [Variants] |

---

## Usage Guidelines

### Do
- Use components as documented (do not override internal styles)
- Follow the spacing system for consistent layouts
- Test components across supported browsers and screen sizes
- Use semantic colors for their intended purpose
- Reference design tokens instead of hardcoded values

### Do Not
- Modify component internals without contributing changes back
- Create one-off components when an existing component fits
- Use brand colors for semantic purposes (error, success)
- Skip accessibility requirements for "internal" tools
- Mix design system versions across a single application

---

## Contribution Process

### Proposing a New Component
1. **Check existing components** - Verify no existing component solves the need
2. **Create proposal** - Document use case, behavior, variants, accessibility requirements
3. **Design review** - Present to design system team for feedback
4. **Build** - Implement component following system patterns
5. **Review** - Code review + design review + accessibility audit
6. **Document** - Add to component library with usage guidelines
7. **Release** - Publish in next minor version

### Updating an Existing Component
1. **File issue** - Describe the change and justification
2. **Impact assessment** - Identify all instances of current usage
3. **Design + develop** - Implement change with backward compatibility
4. **Migration guide** - Document breaking changes if any
5. **Release** - Publish with changelog entry

### Reporting Issues
- File bug reports with reproduction steps and screenshots
- Tag with component name and severity
- Include browser/OS information for rendering issues
