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# Material UI
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Material UI is an open-source React component library that implements Google's Material Design. It provides 139 production-ready components including buttons, forms, navigation, layout, data display, and feedback elements with a robust theming system, responsive breakpoints, dark mode support, and advanced styling solutions.
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## Package Information
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- **Package Name**: @mui/material
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- **Package Type**: npm
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- **Language**: TypeScript/JavaScript (React)
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- **Installation**: `npm install @mui/material @emotion/react @emotion/styled`
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## Core Imports
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```typescript
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import { Button, TextField, AppBar, Toolbar } from "@mui/material";
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import { ThemeProvider, createTheme } from "@mui/material/styles";
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```
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For CommonJS:
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```javascript
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const { Button, TextField, AppBar, Toolbar } = require("@mui/material");
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const { ThemeProvider, createTheme } = require("@mui/material/styles");
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```
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## Basic Usage
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```typescript
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import React from "react";
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import { Button, TextField, Container, Typography } from "@mui/material";
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import { ThemeProvider, createTheme } from "@mui/material/styles";
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const theme = createTheme({
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  palette: {
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    primary: {
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      main: "#1976d2",
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    },
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  },
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});
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function App() {
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  return (
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    <ThemeProvider theme={theme}>
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      <Container maxWidth="sm">
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        <Typography variant="h4" component="h1" gutterBottom>
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          Welcome to Material UI
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        </Typography>
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        <TextField
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          label="Your Name"
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          variant="outlined"
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          fullWidth
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          margin="normal"
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        />
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        <Button
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          variant="contained"
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          color="primary"
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          size="large"
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          fullWidth
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          sx={{ mt: 2 }}
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        >
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          Get Started
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        </Button>
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      </Container>
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    </ThemeProvider>
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  );
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}
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```
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## Architecture
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Material UI is built around several key architectural patterns:
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- **Component System**: 88 production-ready React components implementing Material Design specifications
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- **Theming System**: Comprehensive theme customization with design tokens, breakpoints, and color schemes
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- **Styling Engine**: CSS-in-JS with emotion, sx prop system, and styled-components API
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- **Layout System**: Responsive grid, stack, and container components with breakpoint system
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- **Type Safety**: Full TypeScript support with extensive type definitions and interfaces
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- **Accessibility**: WCAG-compliant components with built-in ARIA support and keyboard navigation
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## Capabilities
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### Layout Components
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Responsive layout and container components for structuring applications with Material Design spacing and breakpoints.
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```typescript { .api }
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// Container for centering and constraining content
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function Container(props: ContainerProps): JSX.Element;
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// Flexible grid layout using CSS Flexbox
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function Grid(props: GridProps): JSX.Element;
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// One-dimensional layout for vertical/horizontal stacking
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function Stack(props: StackProps): JSX.Element;
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// Basic layout component with system props
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function Box(props: BoxProps): JSX.Element;
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```
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[Layout Components](./layout.md)
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### Form Components
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Complete form controls including text fields, selects, checkboxes, and form validation with Material Design styling.
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```typescript { .api }
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// Complete text field with label, input and helper text
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function TextField(props: TextFieldProps): JSX.Element;
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// Form control wrapper providing context
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function FormControl(props: FormControlProps): JSX.Element;
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// Select dropdown component
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function Select(props: SelectProps): JSX.Element;
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// Checkbox input component
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function Checkbox(props: CheckboxProps): JSX.Element;
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```
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[Form Components](./forms.md)
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### Navigation Components
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Navigation elements including app bars, drawers, menus, tabs, breadcrumbs, steppers, and pagination for application structure.
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```typescript { .api }
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// Application bar for navigation and branding
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function AppBar(props: AppBarProps): JSX.Element;
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// Navigation drawer panel
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function Drawer(props: DrawerProps): JSX.Element;
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// Navigation links with Material-UI styling
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function Link(props: LinkProps): JSX.Element;
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// Tab navigation component
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function Tabs(props: TabsProps): JSX.Element;
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// Menu component for displaying choices
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function Menu(props: MenuProps): JSX.Element;
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// Component for displaying list of menu items
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function MenuList(props: MenuListProps): JSX.Element;
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// Navigation for mobile interfaces with bottom actions
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function BottomNavigation(props: BottomNavigationProps): JSX.Element;
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// Individual action for BottomNavigation
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function BottomNavigationAction(props: BottomNavigationActionProps): JSX.Element;
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// Container for step navigation
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function Stepper(props: StepperProps): JSX.Element;
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// Compact stepper for mobile interfaces
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function MobileStepper(props: MobileStepperProps): JSX.Element;
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// Pagination component for page navigation
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function Pagination(props: PaginationProps): JSX.Element;
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```
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[Navigation Components](./navigation.md)
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### Input Controls
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Interactive input components including buttons, sliders, switches, rating, toggle buttons, and advanced controls like autocomplete.
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```typescript { .api }
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// Button with multiple variants and states
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function Button(props: ButtonProps): JSX.Element;
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// Icon button for displaying clickable icons
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function IconButton(props: IconButtonProps): JSX.Element;
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// Floating action button for primary actions
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function Fab(props: FabProps): JSX.Element;
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// Component for grouping related buttons
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function ButtonGroup(props: ButtonGroupProps): JSX.Element;
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// Foundation component for building custom buttons
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function ButtonBase(props: ButtonBaseProps): JSX.Element;
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// Slider for selecting values from range
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function Slider(props: SliderProps): JSX.Element;
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// Switch toggle control
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function Switch(props: SwitchProps): JSX.Element;
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// Star rating input for collecting user ratings
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function Rating(props: RatingProps): JSX.Element;
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// Toggle button for binary selection
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function ToggleButton(props: ToggleButtonProps): JSX.Element;
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// Autocomplete input with suggestions
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function Autocomplete<T>(props: AutocompleteProps<T>): JSX.Element;
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```
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[Input Controls](./inputs.md)
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### Data Display
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Components for displaying data including lists, tables, cards, chips, image lists, and typography with consistent styling.
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```typescript { .api }
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// Compact elements that represent input, attribute, or action
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function Chip(props: ChipProps): JSX.Element;
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// Typography component for text display
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function Typography(props: TypographyProps): JSX.Element;
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// Visual content separator for organizing sections
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function Divider(props: DividerProps): JSX.Element;
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// Component for displaying font icons
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function Icon(props: IconProps): JSX.Element;
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// Wrapper for displaying SVG icons with Material-UI styling
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function SvgIcon(props: SvgIconProps): JSX.Element;
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// Component for displaying multiple avatars in a group
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function AvatarGroup(props: AvatarGroupProps): JSX.Element;
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// List component for displaying content in rows
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function List(props: ListProps): JSX.Element;
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// Table component for tabular data
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function Table(props: TableProps): JSX.Element;
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// Card component for containing related information
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function Card(props: CardProps): JSX.Element;
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// Image list for displaying collections of images
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function ImageList(props: ImageListProps): JSX.Element;
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```
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[Data Display](./data-display.md)
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### Feedback Components
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User feedback components including alerts, progress indicators, dialogs, and snackbars.
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```typescript { .api }
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// Alert component for important messages
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function Alert(props: AlertProps): JSX.Element;
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// Title component for Alert messages
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function AlertTitle(props: AlertTitleProps): JSX.Element;
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// Base modal component for overlaying content
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function Modal(props: ModalProps): JSX.Element;
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// Backdrop component for displaying overlay behind modal content
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function Backdrop(props: BackdropProps): JSX.Element;
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// Circular progress indicator
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function CircularProgress(props: CircularProgressProps): JSX.Element;
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// Dialog component for modal content
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function Dialog(props: DialogProps): JSX.Element;
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// Brief message component at bottom of screen
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function Snackbar(props: SnackbarProps): JSX.Element;
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```
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[Feedback Components](./feedback.md)
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### Surface Components
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Surface components including paper, cards, and accordions providing elevation and content organization.
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```typescript { .api }
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// Basic surface component with Material Design elevation
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function Paper(props: PaperProps): JSX.Element;
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// Expandable panels for organizing content
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function Accordion(props: AccordionProps): JSX.Element;
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// Badge for displaying small amounts of data
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function Badge(props: BadgeProps): JSX.Element;
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// Tooltip for additional information
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function Tooltip(props: TooltipProps): JSX.Element;
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```
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[Surface Components](./surfaces.md)
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### Styling System
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Comprehensive theming and styling system with theme creation, color manipulation, and CSS utilities.
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```typescript { .api }
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// Creates custom themes
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function createTheme(options?: ThemeOptions): Theme;
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// Context provider for themes
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function ThemeProvider(props: { theme: Theme; children: ReactNode }): JSX.Element;
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// Hook for accessing current theme
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function useTheme(): Theme;
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// Styled-components API for creating styled components
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function styled<C extends React.ComponentType<any>>(
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  component: C
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): StyledComponent<C>;
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```
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[Styling System](./styling.md)
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### Utility Components
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Utility components for common functionality including click-away listeners, portals, and transitions.
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```typescript { .api }
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// Utility component for detecting clicks outside element
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function ClickAwayListener(props: ClickAwayListenerProps): JSX.Element;
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// Component for rendering children outside normal hierarchy
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function Portal(props: PortalProps): JSX.Element;
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// Fade transition component
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function Fade(props: FadeProps): JSX.Element;
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// Hook for responsive design with media queries
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function useMediaQuery(query: string | ((theme: Theme) => string)): boolean;
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```
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[Utility Components](./utilities.md)
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## Color System
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Material Design color palettes and color manipulation utilities.
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```typescript { .api }
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// Material Design color palettes
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const colors: {
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  red: ColorPalette;
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  blue: ColorPalette;
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  green: ColorPalette;
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  // ... 17 more color palettes
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};
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// Color manipulation functions
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function alpha(color: string, value: number): string;
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function darken(color: string, coefficient: number): string;
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function lighten(color: string, coefficient: number): string;
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```
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[Color System](./colors.md)
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## Common Types
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```typescript { .api }
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// Base props for all Material UI components
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interface CommonProps {
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  className?: string;
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  style?: React.CSSProperties;
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  sx?: SxProps<Theme>;
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}
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// Theme interface
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interface Theme {
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  palette: Palette;
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  typography: Typography;
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  spacing: Spacing;
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  breakpoints: Breakpoints;
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  zIndex: ZIndex;
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  transitions: Transitions;
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  shadows: Shadows;
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  shape: Shape;
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}
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// Color palette interface
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interface Palette {
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  mode: 'light' | 'dark';
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  primary: PaletteColor;
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  secondary: PaletteColor;
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  error: PaletteColor;
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  warning: PaletteColor;
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  info: PaletteColor;
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  success: PaletteColor;
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  grey: GreyPalette;
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  common: CommonColors;
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  text: TypeText;
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  background: TypeBackground;
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  action: TypeAction;
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}
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// SX prop type for inline styling
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type SxProps<Theme = {}> = 
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  | SystemStyleObject<Theme>
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  | ((theme: Theme) => SystemStyleObject<Theme>)
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  | Array<SystemStyleObject<Theme> | ((theme: Theme) => SystemStyleObject<Theme>)>;
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```