/* ============================================
   TAOQIMIAO — Design Tokens
   ============================================ */

:root {
  /* ---- Primary Colors ---- */
  --color-primary: #2D5016;
  --color-primary-rgb: 45, 80, 22;
  --color-primary-light: #3A6B1E;
  --color-primary-lighter: #4A8528;
  --color-primary-dark: #1E3A0E;
  --color-primary-50: #F0F7EC;
  --color-primary-100: #DCEFD2;

  /* ---- Accent Colors ---- */
  --color-accent: #C8A96E;
  --color-accent-rgb: 200, 169, 110;
  --color-accent-light: #D4BC8A;
  --color-accent-lighter: #E0CFA6;
  --color-accent-dark: #B08D4A;
  --color-accent-50: #FBF8F1;
  --color-accent-100: #F5EDDA;

  /* ---- Neutral Colors ---- */
  --color-white: #FFFFFF;
  --color-black: #000000;
  --color-gray-50: #FAFAF7;
  --color-gray-100: #F5F0E8;
  --color-gray-200: #E8E2D8;
  --color-gray-300: #D1C9BC;
  --color-gray-400: #A89E90;
  --color-gray-500: #6B6B6B;
  --color-gray-600: #4A4A4A;
  --color-gray-700: #2A2A2A;
  --color-gray-800: #1A1A1A;
  --color-gray-900: #0D0D0D;

  /* ---- Semantic Colors ---- */
  --color-success: #28A745;
  --color-warning: #F5A623;
  --color-error: #DC3545;
  --color-info: #3B82F6;

  /* ---- Background Colors ---- */
  --color-bg: var(--color-gray-50);
  --color-bg-alt: var(--color-gray-100);
  --color-bg-card: var(--color-white);
  --color-bg-dark: var(--color-gray-800);
  --color-bg-darker: var(--color-gray-900);

  /* ---- Text Colors ---- */
  --color-text: var(--color-gray-700);
  --color-text-light: var(--color-gray-500);
  --color-text-lighter: var(--color-gray-400);
  --color-text-inverse: var(--color-white);

  /* ============================================
     TYPOGRAPHY
     ============================================ */
  --font-heading: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Fira Code', 'Courier New', monospace;

  /* ---- Font Sizes ---- */
  --text-xs: 0.75rem;     /* 12px */
  --text-sm: 0.875rem;    /* 14px */
  --text-base: 1rem;      /* 16px */
  --text-lg: 1.125rem;    /* 18px */
  --text-xl: 1.25rem;     /* 20px */
  --text-2xl: 1.5rem;     /* 24px */
  --text-3xl: 2rem;       /* 32px */
  --text-4xl: 2.5rem;     /* 40px */
  --text-5xl: 3.5rem;     /* 56px */
  --text-6xl: 4.5rem;     /* 72px */

  /* ---- Font Weights ---- */
  --font-light: 300;
  --font-regular: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;

  /* ---- Line Heights ---- */
  --leading-tight: 1.15;
  --leading-snug: 1.3;
  --leading-normal: 1.6;
  --leading-relaxed: 1.75;

  /* ---- Letter Spacing ---- */
  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.05em;
  --tracking-wider: 0.1em;
  --tracking-widest: 0.2em;

  /* ============================================
     SPACING
     ============================================ */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */
  --space-32: 8rem;     /* 128px */

  /* ============================================
     BORDERS & RADIUS
     ============================================ */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-3xl: 32px;
  --radius-full: 9999px;

  --border-light: 1px solid var(--color-gray-200);
  --border-medium: 1px solid var(--color-gray-300);

  /* ============================================
     SHADOWS
     ============================================ */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.04), 0 2px 4px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.06), 0 4px 6px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.08), 0 10px 10px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.15);
  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06), 0 0 1px rgba(0, 0, 0, 0.04);
  --shadow-card-hover: 0 12px 24px rgba(0, 0, 0, 0.1), 0 4px 8px rgba(0, 0, 0, 0.05);

  /* ============================================
     TRANSITIONS
     ============================================ */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
  --transition-slower: 700ms ease;
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out-expo: cubic-bezier(0.87, 0, 0.13, 1);

  /* ============================================
     LAYOUT
     ============================================ */
  --container-max: 1200px;
  --container-wide: 1400px;
  --container-narrow: 800px;
  --container-padding: 1.5rem;
  --header-height: 80px;

  /* ============================================
     Z-INDEX
     ============================================ */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-header: 300;
  --z-overlay: 400;
  --z-modal: 500;
  --z-toast: 600;
}

/* ---- Responsive Font Scaling ---- */
@media (max-width: 768px) {
  :root {
    --text-5xl: 2.5rem;
    --text-6xl: 3rem;
    --text-4xl: 2rem;
    --text-3xl: 1.75rem;
    --header-height: 64px;
    --container-padding: 1rem;
  }
}