/* ===================================
   RecipeFlow Design System
   Global CSS Variables & Tokens
   =================================== */

:root {
  /* ============ Colors ============ */
  
  /* Primary - Blue */
  --primary-color: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #3b82f6;
  
  /* Secondary - Slate */
  --secondary-color: #64748b;
  --secondary-dark: #475569;
  --secondary-light: #94a3b8;
  
  /* Semantic Colors */
  --success-color: #059669;
  --warning-color: #d97706;
  --error-color: #dc2626;
  --danger-color: #dc2626;
  --info-color: #0891b2;
  
  /* Background Colors */
  --background-color: #ffffff;
  --background-secondary: #f8fafc;
  --background-tertiary: #f1f5f9;
  --light-gray: #f7fafc;
  
  /* Text Colors */
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #64748b;
  --text-color: #2d3748;
  
  /* Border Colors */
  --border-color: #e2e8f0;
  --border-hover: #cbd5e1;
  
  /* Shadow Colors */
  --shadow-color: rgba(15, 23, 42, 0.1);
  --shadow-hover: rgba(15, 23, 42, 0.15);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  
  
  /* ============ Spacing ============ */
  
  --spacing-xs: 0.25rem;    /* 4px */
  --spacing-sm: 0.5rem;     /* 8px */
  --spacing-md: 1rem;       /* 16px */
  --spacing-lg: 1.5rem;     /* 24px */
  --spacing-xl: 2rem;       /* 32px */
  --spacing-2xl: 3rem;      /* 48px */
  --spacing-unit: 8px;      /* Legacy - prefer rem units */
  
  
  /* ============ Typography ============ */
  
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "Monaco", "Menlo", monospace;
  
  --font-size-xs: 0.75rem;      /* 12px */
  --font-size-sm: 0.875rem;     /* 14px */
  --font-size-base: 1rem;       /* 16px */
  --font-size-lg: 1.125rem;     /* 18px */
  --font-size-xl: 1.25rem;      /* 20px */
  --font-size-2xl: 1.5rem;      /* 24px */
  --font-size-3xl: 1.875rem;    /* 30px */
  
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  
  /* ============ Border Radius ============ */
  
  --radius-sm: 0.375rem;    /* 6px */
  --radius-md: 0.5rem;      /* 8px */
  --radius-lg: 0.75rem;     /* 12px */
  --radius-xl: 1rem;        /* 16px */
  
  
  /* ============ Transitions ============ */
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.2s ease;
  --transition-slow: 0.3s ease;
  
  
  /* ============ Z-Index Scale ============ */
  
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal-backdrop: 900;
  --z-modal: 1000;
  --z-notification: 1100;
  --z-tooltip: 1200;
}