:root {
    /* Primary Colors - Light Blue */
    --color-primary: #00B4D8;
    --color-primary-dark: #0096B4;
    --color-primary-hover: #0096B4;
    --color-primary-light: #90E0EF;
    
    /* Accent Colors - Gold */
    --color-accent: #D4AF37;
    --color-accent-dark: #B8962E;
    --color-accent-hover: #B8962E;
    --color-accent-light: #E6C84D;
    
    /* Dark Theme Backgrounds */
    --color-bg-primary: #0A0A0A;
    --color-bg-secondary: #121212;
    --color-bg-tertiary: #1A1A1A;
    --color-bg-card: #1F1F1F;
    
    /* Dark Navy (header) */
    --color-dark-primary: #0D1B2A;
    --color-dark-secondary: #1B2838;
    --color-dark-tertiary: #243447;
    
    /* Text Colors */
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #B0B0B0;
    --color-text-muted: #6B7280;
    
    /* Borders */
    --color-border: #2D2D2D;
    --color-border-light: #3D3D3D;
    
    /* Status Colors */
    --color-success: #10B981;
    --color-success-light: #D1FAE5;
    --color-warning: #F59E0B;
    --color-warning-light: #FEF3C7;
    --color-danger: #EF4444;
    --color-danger-light: #FEE2E2;
    
    /* Gray Scale */
    --color-gray-50: #F9FAFB;
    --color-gray-100: #F3F4F6;
    --color-gray-200: #E5E7EB;
    --color-gray-300: #D1D5DB;
    --color-gray-400: #9CA3AF;
    --color-gray-500: #6B7280;
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
    --color-gray-800: #1F2937;
    --color-gray-900: #111827;
    
    --color-white: #FFFFFF;
    --color-black: #000000;
    
    /* Grade Colors */
    --color-grade-a: #10B981;
    --color-grade-b: #00B4D8;
    --color-grade-c: #D4AF37;
    --color-grade-d: #F97316;
    --color-grade-f: #EF4444;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-display: 'Orbitron', 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: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4);
    --shadow-gold: 0 4px 14px 0 rgba(212, 175, 55, 0.4);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 200ms ease;
    --transition-slow: 300ms ease;
    
    /* Z-Index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal: 300;
    --z-tooltip: 400;
}