/** @type {import('tailwindcss').Config} */
export default {
  darkMode: 'class',
  content: [
    "./index.html",
    "./src/**/*.{js,jsx,ts,tsx}",
  ],
  theme: {
    extend: {
      colors: {
        primary: {
          50: '#eef2ff',
          100: '#e0e7ff',
          200: '#c7d2fe',
          300: '#a5b4fc',
          400: '#818cf8',
          500: '#6366f1',
          600: '#4f46e5',
          700: '#4338ca',
          800: '#3730a3',
          900: '#312e81',
          950: '#1e1b4b',
        },
        planner: {
          day: '#f8fafc',
          dayBorder: '#e2e8f0',
          dayHeader: '#1e293b',
          sidebar: '#ffffff',
          sidebarBorder: '#f1f5f9',
          overlay: 'rgba(15, 23, 42, 0.4)',
          dragActive: '#eef2ff',
          dragOver: '#c7d2fe',
        },
        // Semantic theme tokens — resolve to the CSS variables in src/index.css
        // (:root light / .dark dark). Use these utilities (bg-surface, text-content,
        // border-edge, bg-accent) instead of inline `style={{ ... 'var(--...)' }}`.
        surface: {
          DEFAULT: 'var(--bg-primary)',
          secondary: 'var(--bg-secondary)',
          tertiary: 'var(--bg-tertiary)',
          elevated: 'var(--bg-elevated)',
          card: 'var(--bg-card)',
          input: 'var(--bg-input)',
          hover: 'var(--bg-hover)',
          selected: 'var(--bg-selected)',
        },
        content: {
          DEFAULT: 'var(--text-primary)',
          secondary: 'var(--text-secondary)',
          muted: 'var(--text-muted)',
          faint: 'var(--text-faint)',
        },
        edge: {
          DEFAULT: 'var(--border-primary)',
          secondary: 'var(--border-secondary)',
          faint: 'var(--border-faint)',
        },
        accent: {
          DEFAULT: 'var(--accent)',
          text: 'var(--accent-text)',
          on: 'var(--accent-on)',
          hover: 'var(--accent-hover)',
          subtle: 'var(--accent-subtle)',
        },
        // Semantic status colors (+ soft tinted background variant).
        success: { DEFAULT: 'var(--success)', soft: 'var(--success-soft)' },
        danger: { DEFAULT: 'var(--danger)', soft: 'var(--danger-soft)' },
        warning: { DEFAULT: 'var(--warning)', soft: 'var(--warning-soft)' },
        info: { DEFAULT: 'var(--info)', soft: 'var(--info-soft)' },
        // Inverse surface (the near-black/near-white "pill" header pattern).
        inverse: { DEFAULT: 'var(--bg-inverse)', text: 'var(--text-inverse)' },
      },
      boxShadow: {
        'day-column': '0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06)',
        'place-card': '0 1px 2px 0 rgba(0, 0, 0, 0.05)',
        'drag-overlay': '0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04)',
        // Token-backed elevation (scheme/dark aware) — for migrating inline rgba shadows.
        'card': 'var(--shadow-card)',
        'elevated': 'var(--shadow-elevated)',
        'modal': 'var(--shadow-modal)',
        'dropdown': 'var(--shadow-dropdown)',
        'popover': 'var(--shadow-popover)',
      },
      // Semantic type tiers — each scales with its own user multiplier (defaults
      // to 1). Use text-title/subtitle/body/caption for headings/labels so the
      // appearance "text size" control reaches them; the global fontScale (root
      // font-size) additionally scales all rem-based text.
      fontSize: {
        title: ['calc(24px * var(--fs-scale-title, 1))', '1.2'],
        subtitle: ['calc(18px * var(--fs-scale-subtitle, 1))', '1.35'],
        body: ['calc(14px * var(--fs-scale-body, 1))', '1.5'],
        caption: ['calc(12px * var(--fs-scale-caption, 1))', '1.4'],
      },
    },
  },
  plugins: [],
}