# Icon System Guide

## Overview

This project uses **Heroicons** (inline SVG) with a custom helper system for clean, maintainable icon usage across the multi-tenant ecommerce platform.

### Why This Approach?

- **No External Dependencies**: All icons are inline SVG - no CDN required
- **Performance**: Zero extra HTTP requests
- **Tailwind Integration**: Icons work seamlessly with Tailwind utility classes
- **Clean HTML**: No verbose SVG code cluttering your templates
- **Type Safety**: All available icons are defined in one place

---

## Quick Start

### 1. Include the Icon Helper

Add this script **before** Alpine.js in your HTML pages:

```html
<!-- Load icon helper -->
<script src="/static/shared/js/icons.js"></script>

<!-- Alpine.js v3 -->
<script defer src="https://cdn.jsdelivr.net/npm/alpinejs@3.14.0/dist/cdn.min.js"></script>
```

### 2. Use Icons with Alpine Magic Helper

```html
<!-- Default size (w-5 h-5) -->
<span x-html="$icon('home')"></span>

<!-- Custom size and color -->
<span x-html="$icon('home', 'w-6 h-6 text-purple-600')"></span>

<!-- In buttons -->
<button>
    <span x-html="$icon('plus', 'w-4 h-4 mr-2')"></span>
    Create Vendor
</button>
```

---

## Available Icons

### Navigation Icons
| Icon Name | Usage | Description |
|-----------|-------|-------------|
| `home` | `$icon('home')` | Dashboard, homepage |
| `menu` | `$icon('menu')` | Mobile menu toggle |
| `search` | `$icon('search')` | Search functionality |
| `arrow-left` | `$icon('arrow-left')` | Back navigation |
| `chevron-down` | `$icon('chevron-down')` | Dropdowns |
| `chevron-right` | `$icon('chevron-right')` | Next/forward |

### User & Profile Icons
| Icon Name | Usage | Description |
|-----------|-------|-------------|
| `user` | `$icon('user')` | Single user profile |
| `users` | `$icon('users')` | Multiple users, team |
| `user-circle` | `$icon('user-circle')` | User avatar |
| `user-group` | `$icon('user-group')` | Groups, teams |
| `identification` | `$icon('identification')` | ID, credentials |
| `badge-check` | `$icon('badge-check')` | Verified badge |

### Action Icons
| Icon Name | Usage | Description |
|-----------|-------|-------------|
| `edit` | `$icon('edit')` | Edit action |
| `delete` | `$icon('delete')` | Delete action |
| `plus` | `$icon('plus')` | Add/create action |
| `check` | `$icon('check')` | Success, confirmed |
| `close` | `$icon('close')` | Close, dismiss |
| `refresh` | `$icon('refresh')` | Reload, refresh |
| `duplicate` | `$icon('duplicate')` | Copy, duplicate |
| `eye` | `$icon('eye')` | View, show |
| `eye-off` | `$icon('eye-off')` | Hide |
| `filter` | `$icon('filter')` | Filter options |
| `dots-vertical` | `$icon('dots-vertical')` | More options (vertical) |
| `dots-horizontal` | `$icon('dots-horizontal')` | More options (horizontal) |

### E-commerce Icons
| Icon Name | Usage | Description |
|-----------|-------|-------------|
| `shopping-bag` | `$icon('shopping-bag')` | Vendors, products |
| `shopping-cart` | `$icon('shopping-cart')` | Cart |
| `credit-card` | `$icon('credit-card')` | Payment |
| `currency-dollar` | `$icon('currency-dollar')` | Money, pricing |
| `gift` | `$icon('gift')` | Promotions, gifts |
| `tag` | `$icon('tag')` | Tags, categories |
| `truck` | `$icon('truck')` | Shipping, delivery |
| `receipt` | `$icon('receipt')` | Orders, receipts |

### Inventory & Product Icons
| Icon Name | Usage | Description |
|-----------|-------|-------------|
| `cube` | `$icon('cube')` | Products, packages |
| `collection` | `$icon('collection')` | Collections, catalog |
| `photograph` | `$icon('photograph')` | Images, media |
| `color-swatch` | `$icon('color-swatch')` | Variants, colors |
| `template` | `$icon('template')` | Templates, layouts |
| `clipboard-list` | `$icon('clipboard-list')` | Lists, inventory |

### Analytics & Reports
| Icon Name | Usage | Description |
|-----------|-------|-------------|
| `chart` | `$icon('chart')` | Analytics, stats |
| `trending-up` | `$icon('trending-up')` | Growth, increase |
| `trending-down` | `$icon('trending-down')` | Decline, decrease |
| `presentation-chart-line` | `$icon('presentation-chart-line')` | Reports, presentations |
| `calculator` | `$icon('calculator')` | Calculations, math |

### Communication Icons
| Icon Name | Usage | Description |
|-----------|-------|-------------|
| `bell` | `$icon('bell')` | Notifications |
| `mail` | `$icon('mail')` | Email, messages |
| `chat` | `$icon('chat')` | Chat, messaging |
| `annotation` | `$icon('annotation')` | Comments, notes |
| `phone` | `$icon('phone')` | Phone, call |

### System & Settings
| Icon Name | Usage | Description |
|-----------|-------|-------------|
| `cog` | `$icon('cog')` | Settings, configuration |
| `sun` | `$icon('sun')` | Light theme |
| `moon` | `$icon('moon')` | Dark theme |
| `database` | `$icon('database')` | Database, storage |
| `server` | `$icon('server')` | Server, hosting |
| `shield-check` | `$icon('shield-check')` | Security, verified |
| `key` | `$icon('key')` | API keys, passwords |
| `lock-closed` | `$icon('lock-closed')` | Locked, secure |
| `lock-open` | `$icon('lock-open')` | Unlocked |

### Document & File Icons
| Icon Name | Usage | Description |
|-----------|-------|-------------|
| `document` | `$icon('document')` | Documents, files |
| `folder` | `$icon('folder')` | Folders, directories |
| `folder-open` | `$icon('folder-open')` | Open folder |
| `download` | `$icon('download')` | Download action |
| `upload` | `$icon('upload')` | Upload action |

### Time & Calendar
| Icon Name | Usage | Description |
|-----------|-------|-------------|
| `calendar` | `$icon('calendar')` | Calendar, dates |
| `clock` | `$icon('clock')` | Time, schedule |

### Location Icons
| Icon Name | Usage | Description |
|-----------|-------|-------------|
| `location-marker` | `$icon('location-marker')` | Location, address |
| `globe` | `$icon('globe')` | International, language |

### Status & Indicators
| Icon Name | Usage | Description |
|-----------|-------|-------------|
| `exclamation` | `$icon('exclamation')` | Warning, alert |
| `information-circle` | `$icon('information-circle')` | Information, help |
| `spinner` | `$icon('spinner')` | Loading state |
| `star` | `$icon('star')` | Favorites, ratings |
| `heart` | `$icon('heart')` | Likes, favorites |
| `flag` | `$icon('flag')` | Reports, flags |

### Links & External
| Icon Name | Usage | Description |
|-----------|-------|-------------|
| `external-link` | `$icon('external-link')` | Open in new tab |
| `link` | `$icon('link')` | URL, hyperlink |
| `logout` | `$icon('logout')` | Sign out |

---

## Common Usage Patterns

### Buttons with Icons

```html
<!-- Primary action button -->
<button class="btn-primary">
    <span x-html="$icon('plus', 'w-4 h-4 mr-2')"></span>
    Create Product
</button>

<!-- Icon-only button -->
<button class="p-2 hover:bg-gray-100 rounded">
    <span x-html="$icon('edit', 'w-5 h-5 text-gray-600')"></span>
</button>

<!-- Danger button -->
<button class="btn-danger">
    <span x-html="$icon('delete', 'w-4 h-4 mr-2')"></span>
    Delete
</button>
```

### Status Indicators

```html
<!-- Success state -->
<div class="flex items-center text-green-600">
    <span x-html="$icon('check', 'w-5 h-5 mr-2')"></span>
    <span>Verified</span>
</div>

<!-- Warning state -->
<div class="flex items-center text-yellow-600">
    <span x-html="$icon('exclamation', 'w-5 h-5 mr-2')"></span>
    <span>Pending Review</span>
</div>

<!-- Loading state -->
<div class="flex items-center text-blue-600">
    <span x-html="$icon('spinner', 'w-5 h-5 mr-2')"></span>
    <span>Processing...</span>
</div>
```

### Navigation Items

```html
<!-- Sidebar navigation -->
<nav>
    <a href="/dashboard" class="nav-item">
        <span x-html="$icon('home', 'w-5 h-5 mr-3')"></span>
        Dashboard
    </a>
    <a href="/products" class="nav-item">
        <span x-html="$icon('cube', 'w-5 h-5 mr-3')"></span>
        Products
    </a>
    <a href="/orders" class="nav-item">
        <span x-html="$icon('shopping-cart', 'w-5 h-5 mr-3')"></span>
        Orders
    </a>
</nav>
```

### Form Fields

```html
<!-- Search input -->
<div class="relative">
    <div class="absolute inset-y-0 left-0 pl-3 flex items-center">
        <span x-html="$icon('search', 'w-5 h-5 text-gray-400')"></span>
    </div>
    <input type="text" class="pl-10" placeholder="Search...">
</div>

<!-- Password field with toggle -->
<div class="relative" x-data="{ show: false }">
    <input :type="show ? 'text' : 'password'" class="pr-10">
    <button @click="show = !show" class="absolute inset-y-0 right-0 pr-3">
        <span x-show="!show" x-html="$icon('eye', 'w-5 h-5 text-gray-400')"></span>
        <span x-show="show" x-html="$icon('eye-off', 'w-5 h-5 text-gray-400')"></span>
    </button>
</div>
```

### Cards & Panels

```html
<!-- Stat card -->
<div class="bg-white p-6 rounded-lg shadow">
    <div class="flex items-center justify-between">
        <div>
            <p class="text-gray-500 text-sm">Total Sales</p>
            <p class="text-2xl font-bold">$12,345</p>
        </div>
        <div class="p-3 bg-blue-100 rounded-full">
            <span x-html="$icon('currency-dollar', 'w-6 h-6 text-blue-600')"></span>
        </div>
    </div>
</div>
```

### Dropdown Menus

```html
<div x-data="{ open: false }" class="relative">
    <button @click="open = !open" class="flex items-center">
        <span>Options</span>
        <span x-html="$icon('chevron-down', 'w-4 h-4 ml-2')"></span>
    </button>
    
    <div x-show="open" class="absolute right-0 mt-2 w-48 bg-white rounded-lg shadow-lg">
        <a href="#" class="flex items-center px-4 py-2 hover:bg-gray-100">
            <span x-html="$icon('edit', 'w-4 h-4 mr-2')"></span>
            Edit
        </a>
        <a href="#" class="flex items-center px-4 py-2 hover:bg-gray-100">
            <span x-html="$icon('duplicate', 'w-4 h-4 mr-2')"></span>
            Duplicate
        </a>
        <a href="#" class="flex items-center px-4 py-2 text-red-600 hover:bg-gray-100">
            <span x-html="$icon('delete', 'w-4 h-4 mr-2')"></span>
            Delete
        </a>
    </div>
</div>
```

---

## Size Guidelines

| Class | Size | Use Case |
|-------|------|----------|
| `w-3 h-3` | 12px | Inline text icons |
| `w-4 h-4` | 16px | Small buttons, badges |
| `w-5 h-5` | 20px | Default size, most UI elements |
| `w-6 h-6` | 24px | Larger buttons, headers |
| `w-8 h-8` | 32px | Featured icons, empty states |
| `w-12 h-12` | 48px | Large feature displays |

---

## Color Patterns

```html
<!-- Semantic colors -->
<span x-html="$icon('check', 'w-5 h-5 text-green-600')"></span>    <!-- Success -->
<span x-html="$icon('exclamation', 'w-5 h-5 text-yellow-600')"></span> <!-- Warning -->
<span x-html="$icon('close', 'w-5 h-5 text-red-600')"></span>      <!-- Error -->
<span x-html="$icon('information-circle', 'w-5 h-5 text-blue-600')"></span> <!-- Info -->

<!-- Gray scale -->
<span x-html="$icon('user', 'w-5 h-5 text-gray-400')"></span>      <!-- Muted -->
<span x-html="$icon('user', 'w-5 h-5 text-gray-600')"></span>      <!-- Normal -->
<span x-html="$icon('user', 'w-5 h-5 text-gray-900')"></span>      <!-- Emphasized -->

<!-- With hover states -->
<button class="group">
    <span x-html="$icon('edit', 'w-5 h-5 text-gray-400 group-hover:text-gray-600')"></span>
</button>
```

---

## Best Practices

### ✅ Do

- Use consistent icon sizes within the same context
- Match icon color with text color for visual harmony
- Use semantic colors for status indicators
- Include descriptive text for accessibility
- Use the `$icon()` helper for cleaner templates

### ❌ Don't

- Mix icon styles (outline vs solid) inconsistently
- Use icons without considering their meaning
- Make icons too small to recognize (< 16px)
- Rely solely on icons without text labels for important actions
- Use decorative icons excessively

---

## Adding New Icons

To add a new icon to the system:

1. Find the icon in [Heroicons](https://heroicons.com/)
2. Copy the SVG path data
3. Add to the `Icons` object in `icons.js`:

```javascript
'new-icon-name': `<svg class="{{classes}}" fill="none" stroke="currentColor" viewBox="0 0 24 24">
    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="YOUR_PATH_DATA"/>
</svg>`
```

4. Update this guide with the new icon

---

## Browser Support

The icon system works in all modern browsers:
- Chrome/Edge (latest)
- Firefox (latest)
- Safari (latest)
- Mobile browsers (iOS Safari, Chrome Mobile)

---

## Performance Notes

- Icons are inline SVG - no additional HTTP requests
- Total icon library size: ~15KB uncompressed
- Minimal impact on page load time
- Icons render instantly with the page

---

## Troubleshooting

**Icon not displaying?**
- Check that `icons.js` is loaded before Alpine.js
- Verify the icon name exists in the Icons object
- Check browser console for warnings

**Icon wrong size?**
- Ensure you're passing valid Tailwind size classes
- Use both width and height (e.g., `w-5 h-5`)

**Icon wrong color?**
- Add text color class (e.g., `text-gray-600`)
- Check parent element's color inheritance

---

## Related Resources

- [Heroicons Official Site](https://heroicons.com/)
- [Tailwind CSS Documentation](https://tailwindcss.com/docs)
- [Alpine.js Magic Properties](https://alpinejs.dev/magics/el)