/** @type {import('tailwindcss').Config} */
export default {
  content: [
    "./index.html",
    "./src/**/*.{js,ts,jsx,tsx}",
  ],
  darkMode: 'class',
  theme: {
    extend: {
      colors: {
        // ── Semantic surface tokens (theme-aware via CSS vars) ──────────
        surface: {
          base:    'var(--color-surface-base)',
          raised:  'var(--color-surface-raised)',
          overlay: 'var(--color-surface-overlay)',
          inset:   'var(--color-surface-inset)',
          hover:   'var(--color-surface-hover)',
          active:  'var(--color-surface-active)',
        },
        // ── Legacy dark-* aliases (backward compat → surface tokens) ───
        dark: {
          950: 'var(--color-surface-base)',
          900: 'var(--color-surface-base)',
          850: 'var(--color-surface-raised)',
          800: 'var(--color-surface-raised)',
          700: 'var(--color-surface-overlay)',
          600: 'var(--color-surface-inset)',
          500: 'var(--color-text-dim)',
        },
        // ── Accent colors (RGB channels → /opacity works in light & dark) ──
        accent: {
          blue:         'rgb(var(--color-accent-blue-rgb) / <alpha-value>)',
          'blue-hover': 'rgb(var(--color-accent-blue-hover-rgb) / <alpha-value>)',
          green:        'rgb(var(--color-accent-green-rgb) / <alpha-value>)',
          purple:       'rgb(var(--color-accent-purple-rgb) / <alpha-value>)',
          orange:       'rgb(var(--color-accent-orange-rgb) / <alpha-value>)',
          red:          'rgb(var(--color-accent-red-rgb) / <alpha-value>)',
        },
        // ── Content / text tokens ──────────────────────────────────────
        content: {
          primary:   'var(--color-content-primary)',
          secondary: 'var(--color-content-secondary)',
          tertiary:  'var(--color-content-tertiary)',
          inverse:   'var(--color-content-inverse)',
        },
        // ── Text tokens (direct mapping) ───────────────────────────────
        txt: {
          primary:   'var(--color-text-primary)',
          secondary: 'var(--color-text-secondary)',
          muted:     'var(--color-text-muted)',
          faint:     'var(--color-text-faint)',
          dim:       'var(--color-text-dim)',
        },
        // ── Border tokens ──────────────────────────────────────────────
        border: {
          DEFAULT: 'var(--color-border-default)',
          subtle:  'var(--color-border-subtle)',
          strong:  'var(--color-border-strong)',
          focus:   'var(--color-border-focus)',
        },
        // ── Placeholder tokens ─────────────────────────────────────────
        ph: {
          DEFAULT:  'var(--color-placeholder)',
          disabled: 'var(--color-placeholder-disabled)',
        },
        // ── Feedback / status tokens ───────────────────────────────────
        feedback: {
          success:      'rgb(var(--color-feedback-success-rgb) / <alpha-value>)',
          'success-bg': 'var(--color-feedback-success-bg)',
          warning:      'rgb(var(--color-feedback-warning-rgb) / <alpha-value>)',
          'warning-bg': 'var(--color-feedback-warning-bg)',
          error:        'rgb(var(--color-feedback-error-rgb) / <alpha-value>)',
          'error-bg':   'var(--color-feedback-error-bg)',
          info:         'rgb(var(--color-feedback-info-rgb) / <alpha-value>)',
          'info-bg':    'var(--color-feedback-info-bg)',
        },
      },
      fontFamily: {
        sans: [
          'Inter',
          '-apple-system',
          'BlinkMacSystemFont',
          '"Segoe UI"',
          'Roboto',
          '"Helvetica Neue"',
          'Arial',
          '"Noto Sans SC"',
          '"PingFang SC"',
          '"Microsoft YaHei"',
          'sans-serif',
        ],
        mono: [
          'Menlo',
          'Monaco',
          'Consolas',
          '"Liberation Mono"',
          '"Courier New"',
          'monospace',
        ],
      },
      animation: {
        'fade-in': 'fadeIn 0.15s ease-out',
        'slide-up': 'slideUp 0.2s ease-out',
        'scale-in': 'scaleIn 0.15s ease-out',
      },
      keyframes: {
        fadeIn: {
          '0%': { opacity: '0' },
          '100%': { opacity: '1' },
        },
        slideUp: {
          '0%': { opacity: '0', transform: 'translateY(8px)' },
          '100%': { opacity: '1', transform: 'translateY(0)' },
        },
        scaleIn: {
          '0%': { opacity: '0', transform: 'scale(0.96)' },
          '100%': { opacity: '1', transform: 'scale(1)' },
        },
      },
    },
  },
  plugins: [],
}