import { createTheme } from '@mui/material/styles'

// Color palette constants
const colors = {
  // Primary Colors
  deepNavy: '#1e3a5f', // Main brand color for headers and primary actions
  oceanBlue: '#2c5282', // Secondary blue for links and active states
  compassGold: '#d69e2e', // Accent color for highlights and call-to-actions

  // Status Colors
  chartGreen: '#48bb78', // Completed tasks and success states
  sunsetCoral: '#f56565', // Urgent tasks and error states
  seaFoam: '#4fd1c7', // Information and notification states

  // Neutrals
  parchment: '#f7fafc', // Clean background color
  fogGray: '#e2e8f0', // Subtle borders and dividers
  stormGray: '#718096', // Secondary text
  anchorDark: '#2d3748', // Primary text and headings
}

declare module '@mui/material/styles' {
  interface Theme {
    custom: {
      task: {
        todo: string
        done: string
        backlog: string
      }
    }
  }

  interface ThemeOptions {
    custom?: {
      task?: {
        todo?: string
        done?: string
        backlog?: string
      }
    }
  }
}

export const theme = createTheme({
  palette: {
    mode: 'light',
    primary: {
      main: colors.deepNavy,
      light: colors.oceanBlue,
      contrastText: '#ffffff',
    },
    secondary: {
      main: colors.compassGold,
      contrastText: '#ffffff',
    },
    success: {
      main: colors.chartGreen,
    },
    error: {
      main: colors.sunsetCoral,
    },
    info: {
      main: colors.seaFoam,
    },
    background: {
      default: colors.parchment,
      paper: '#ffffff',
    },
    text: {
      primary: colors.anchorDark,
      secondary: colors.stormGray,
    },
    grey: {
      100: '#edf2f7',
      200: colors.fogGray,
      300: '#cbd5e0',
      500: colors.stormGray,
      700: colors.anchorDark,
    },
  },
  typography: {
    fontFamily: '"Inter", ui-sans-serif, system-ui, sans-serif',
    h1: {
      fontSize: '2rem',
      fontWeight: 700,
      lineHeight: 1.2,
    },
    h2: {
      fontSize: '1.5rem',
      fontWeight: 600,
      lineHeight: 1.3,
    },
    h3: {
      fontSize: '1.25rem',
      fontWeight: 600,
      lineHeight: 1.4,
    },
    body1: {
      fontSize: '1rem',
      lineHeight: 1.6,
    },
    body2: {
      fontSize: '0.875rem',
      lineHeight: 1.5,
    },
  },
  shape: {
    borderRadius: 12,
  },
  components: {
    MuiAppBar: {
      styleOverrides: {
        root: {
          backgroundColor: colors.deepNavy,
          color: '#ffffff',
          boxShadow:
            '0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1)',
          borderBottom: 'none',
        },
      },
    },
    MuiDrawer: {
      styleOverrides: {
        paper: {
          backgroundColor: '#ffffff',
          borderRight: `1px solid ${colors.fogGray}`,
        },
      },
    },
    MuiButton: {
      styleOverrides: {
        root: {
          textTransform: 'none',
          borderRadius: '0.75rem',
          fontWeight: 500,
        },
        contained: {
          boxShadow: '0 1px 2px 0 rgb(0 0 0 / 0.05)',
          '&:hover': {
            boxShadow:
              '0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1)',
          },
        },
      },
    },
    MuiCard: {
      styleOverrides: {
        root: {
          borderRadius: '0.75rem',
          boxShadow:
            '0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1)',
          border: `1px solid ${colors.fogGray}`,
          '&:hover': {
            boxShadow:
              '0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1)',
            borderColor: '#cbd5e0',
          },
        },
      },
    },
    MuiTextField: {
      styleOverrides: {
        root: {
          '& .MuiOutlinedInput-root': {
            borderRadius: '0.75rem',
          },
        },
      },
    },
  },
  custom: {
    task: {
      todo: colors.oceanBlue,
      done: colors.chartGreen,
      backlog: colors.stormGray,
    },
  },
})