frontend/src/theme.ts

'use client';
import { createTheme } from '@mui/material/styles';
import { Noto_Sans_JP } from 'next/font/google';

const notoSansJP = Noto_Sans_JP({
  weight: ['300', '400', '500', '600', '700'],
  subsets: ['latin'],
  display: 'swap',
});

const theme = createTheme({
  palette: {
    mode: 'light',
    primary: {
      main: '#10b981', // Modern emerald green
      light: '#34d399',
      dark: '#047857',
      contrastText: '#ffffff',
    },
    secondary: {
      main: '#f59e0b', // Modern amber
      light: '#fbbf24',
      dark: '#d97706',
      contrastText: '#ffffff',
    },
    background: {
      default: '#f8fafc',
      paper: '#ffffff',
    },
    text: {
      primary: '#1e293b',
      secondary: '#64748b',
    },
  },
  typography: {
    fontFamily: notoSansJP.style.fontFamily,
    h6: {
      fontWeight: 600,
      fontSize: '1.125rem',
    },
    subtitle1: {
      fontSize: '0.875rem',
      fontWeight: 500,
    },
    button: {
      textTransform: 'none',
      fontWeight: 500,
    },
  },
  shape: {
    borderRadius: 12,
  },
  components: {
    MuiAppBar: {
      styleOverrides: {
        root: {
          backgroundColor: '#ffffff',
          color: '#1e293b',
          boxShadow: '0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1)',
          borderBottom: '1px solid #e2e8f0',
        },
      },
    },
    MuiPaper: {
      styleOverrides: {
        root: {
          boxShadow: '0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1)',
          borderRadius: 12,
        },
      },
    },
    MuiButton: {
      styleOverrides: {
        root: {
          borderRadius: 8,
          paddingTop: 8,
          paddingBottom: 8,
          paddingLeft: 16,
          paddingRight: 16,
        },
        contained: {
          boxShadow: '0 2px 4px -1px rgb(0 0 0 / 0.2), 0 1px 2px -1px rgb(0 0 0 / 0.12)',
          '&:hover': {
            boxShadow: '0 4px 8px -2px rgb(0 0 0 / 0.25), 0 2px 4px -2px rgb(0 0 0 / 0.15)',
          },
        },
      },
    },
    MuiTextField: {
      styleOverrides: {
        root: {
          '& .MuiOutlinedInput-root': {
            borderRadius: 8,
            '&:hover fieldset': {
              borderColor: '#10b981',
            },
          },
        },
      },
    },
    MuiIconButton: {
      styleOverrides: {
        root: {
          borderRadius: 8,
        },
      },
    },
  },
});

export default theme;