:root {
  /* Color Palette - Enterprise Professional */
  --color-primary: #1e40af;
  --color-primary-dark: #1e3a8a;
  --color-primary-light: #3b82f6;
  --color-primary-alpha: rgba(30, 64, 175, 0.1);
  
  --color-secondary: #374151;
  --color-secondary-dark: #1f2937;
  --color-secondary-light: #6b7280;
  --color-secondary-alpha: rgba(55, 65, 81, 0.1);
  
  --color-accent: #059669;
  --color-accent-dark: #047857;
  --color-accent-light: #10b981;
  
  --color-text-primary: #1f2937;
  --color-text-secondary: #374151;
  --color-text-tertiary: #6b7280;
  --color-text-dark: #111827;
  --color-text-light: #f9fafb;
  
  --color-background: #ffffff;
  --color-background-elevated: #f8fafc;
  --color-background-light: #f1f5f9;
  --color-background-white: #ffffff;
  --color-background-dark: #1f2937;
  
  --color-border: #e5e7eb;
  --color-border-light: #f3f4f6;
  
  --color-success: #10b981;
  --color-success-light: rgba(16, 185, 129, 0.1);
  --color-warning: #f59e0b;
  --color-warning-light: rgba(245, 158, 11, 0.1);
  --color-error: #ef4444;
  --color-error-light: rgba(239, 68, 68, 0.1);
  --color-info: #3b82f6;
  --color-info-light: rgba(59, 130, 246, 0.1);
  
  /* Spacing Scale */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;
  
  /* Typography */
  --font-family-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-family-mono: 'Monaco', 'Menlo', 'Courier New', monospace;
  
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.5rem;
  
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  --line-height-tight: 1.2;
  --line-height-normal: 1.6;
  --line-height-loose: 1.8;
  
  /* Layout */
  --container-max-width: 1280px;
  --container-padding: 3rem;
  --section-padding: 6.25rem;
  
  /* Border Radius */
  --border-radius-sm: 6px;
  --border-radius-md: 12px;
  --border-radius-lg: 16px;
  --border-radius-xl: 24px;
  --border-radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 20px rgba(30, 64, 175, 0.15);
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.2s ease;
  --transition-slow: 0.3s ease;
  
  /* Z-index Scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
  --gradient-secondary: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
  --gradient-dark: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
}

/* Light theme override for specific pages */
[data-theme="light"] {
  --color-text-primary: #1f2937;
  --color-text-secondary: #4b5563;
  --color-text-tertiary: #6b7280;
  
  --color-background: #ffffff;
  --color-background-elevated: #f9fafb;
  --color-background-light: #f3f4f6;
  
  --color-border: #e5e7eb;
  --color-border-light: #d1d5db;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

/* Responsive Breakpoints */
@custom-media --sm (min-width: 640px);
@custom-media --md (min-width: 768px);
@custom-media --lg (min-width: 1024px);
@custom-media --xl (min-width: 1280px);
@custom-media --2xl (min-width: 1536px);