5. User Interface & Frontend Functionality

5.1. End-User Features

Dynamic Content Areas

1. Landing Page Components

   interface LandingPageSection {
     hero: {
       title: string;
       subtitle: string;
       ctaButton: {
         text: string;
         action: string;
       };
     };
     features: Feature[];
     testimonials: Testimonial[];
     faq: FAQItem[];
   }
   

2. Search Interface

   • Real-time search suggestions
   • Advanced filtering options
   • Category-based navigation
   • Search history tracking

[!NOTE] 📸 Screenshot Needed: Landing page with key components highlighted

Database Access Interface

1. Search Limitations

   interface SearchLimits {
     freeUsers: {
       dailySearches: number;
       exportLimit: number;
       resultLimit: number;
     };
     paidUsers: {
       unlimited: boolean;
       apiAccess: boolean;
       bulkExport: boolean;
     };
   }
   

2. Results Display

   • Customizable columns
   • Sorting capabilities
   • Pagination controls
   • Export options

[!NOTE] 📸 Screenshot Needed: Search interface with results display

User Dashboard

1. Account Management

   • Profile settings
   • Subscription status
   • Usage statistics
   • Billing history

2. Data Access Controls

   interface UserPermissions {
     canExport: boolean;
     canShare: boolean;
     canCreateAPI: boolean;
     maxResults: number;
   }
   

[!NOTE] 📸 Screenshot Needed: User dashboard overview

5.2. Frontend Customization

Template System

1. Available Templates

   interface TemplateConfig {
     name: string;
     components: {
       header: React.Component;
       footer: React.Component;
       sidebar: React.Component;
       searchBar: React.Component;
     };
     styles: {
       colors: ThemeColors;
       typography: Typography;
       spacing: Spacing;
     };
   }
   

2. Custom Components

   • Component override system
   • Prop injection
   • Theme integration

[!NOTE] 📊 Diagram Needed: Template system architecture

Styling System

1. Theme Configuration

   interface Theme {
     colors: {
       primary: string;
       secondary: string;
       accent: string;
       background: string;
       text: string;
     };
     typography: {
       fontFamily: string;
       fontSize: Record<string, string>;
       fontWeight: Record<string, number>;
     };
     spacing: {
       unit: number;
       scale: number[];
     };
   }
   

2. CSS Modules

   • Component-specific styles
   • Global styles
   • Utility classes

[!NOTE] 📸 Screenshot Needed: Theme customization interface

Component Library

1. Core Components

   interface ComponentLibrary {
     buttons: {
       primary: React.Component;
       secondary: React.Component;
       icon: React.Component;
     };
     forms: {
       input: React.Component;
       select: React.Component;
       checkbox: React.Component;
     };
     layout: {
       container: React.Component;
       grid: React.Component;
       card: React.Component;
     };
   }
   

2. Extension Points

   • Component composition
   • HOC patterns
   • Custom hooks

[!NOTE] 📊 Diagram Needed: Component hierarchy and relationships

Responsive Design

1. Breakpoint System

   const breakpoints = {
     xs: '320px',
     sm: '640px',
     md: '768px',
     lg: '1024px',
     xl: '1280px',
   };
   

2. Mobile Optimization

   • Touch-friendly controls
   • Adaptive layouts
   • Performance considerations

[!NOTE] 📸 Screenshot Needed: Responsive design examples across devices

State Management

1. Global State

   interface AppState {
     user: UserState;
     search: SearchState;
     ui: UIState;
     database: DatabaseState;
   }
   

2. Local State Management

   • Component state
   • Context API usage
   • Custom hooks

[!NOTE] 📊 Diagram Needed: State management flow

Performance Optimization

1. Code Splitting

   // Dynamic imports
   const DynamicComponent = dynamic(() => import('./Component'), {
     loading: () => <LoadingSpinner />,
     ssr: false,
   });
   

2. Caching Strategy

   • API response caching
   • Static page generation
   • Image optimization

3. Monitoring Tools

   interface PerformanceMetrics {
     fcp: number; // First Contentful Paint
     lcp: number; // Largest Contentful Paint
     fid: number; // First Input Delay
     cls: number; // Cumulative Layout Shift
   }
   

[!NOTE] 📊 Diagram Needed: Performance optimization workflow

Accessibility Features

1. ARIA Implementation

   interface AccessibilityFeatures {
     landmarks: string[];
     roles: string[];
     states: Record<string, boolean>;
     properties: Record<string, string>;
   }
   

2. Keyboard Navigation

   • Focus management
   • Shortcut keys
   • Tab order

3. Screen Reader Support

   • Semantic HTML
   • Alternative text
   • ARIA labels

[!NOTE] 📸 Screenshot Needed: Accessibility testing tools and results