/* ========================================
   MSPE CSS Variables - Unified Design Tokens
   Single Source of Truth for Colors, Typography, Spacing, and Breakpoints
   ======================================== */

:root {
    /* ==================== COLOR SYSTEM ==================== */
    
    /* Primary Colors */
    --color-primary: #10223b;
    --color-primary-light: #1f3f69;
    --color-primary-dark: #0b1930;
    
    /* Accent Colors - Single Definition */
    --color-accent: #0ea5e9;
    --color-accent-light: #38bdf8;
    --color-accent-dark: #0284c7;
    --color-accent-glow: rgba(14, 165, 233, 0.3);
    
    /* Secondary Colors */
    --color-secondary: #0d9488;
    --color-secondary-light: #14b8a6;
    
    /* Status Colors */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    
    /* Neutral Colors */
    --color-white: #ffffff;
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;
    
    /* Neon/Glow Colors */
    --color-neon-cyan: #0ea5e9;
    --color-neon-cyan-soft: #38bdf8;
    --color-neon-purple: #0284c7;
    --color-neon-purple-soft: #0369a1;
    --color-neon-pink: #0c4a6e;
    --color-neon-pink-soft: #075985;
    --color-neon-blue: #2563eb;
    --color-neon-blue-soft: #3b82f6;
    --color-neon-green: #10b981;
    --color-neon-gold: #e6c068;
    --color-neon-orange: #f59e0b;
    
    /* Text Colors */
    --text-white: #ffffff;
    --text-dark: #0a1628;
    --text-body: #64748b;
    --text-muted: #94a3b8;
    
    /* Background Colors */
    --bg-dark: #122a47;
    --bg-light: #f8fafc;
    --bg-ultra-dark: #0d2038;
    --bg-darker: #17335a;
    --bg-medium: #10223d;
    
    /* Border Color */
    --border-light: #e2e8f0;
    --border-dark: rgba(255, 255, 255, 0.08);
    --border-dark-hover: rgba(255, 255, 255, 0.15);
    
    /* Glass Effect Colors */
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-bg-hover: rgba(255, 255, 255, 0.08);
    --glass-bg-active: rgba(255, 255, 255, 0.12);
    
    /* ==================== TYPOGRAPHY ==================== */
    
    /* Font Families */
    --font-primary: 'DM Sans', sans-serif;
    --font-display: 'Space Grotesk', sans-serif;
    --font-heading: 'Space Grotesk', sans-serif;
    
    /* Font Sizes - Heading Scale */
    --font-size-h1: clamp(2.5rem, 5vw, 4rem);
    --font-size-h2: clamp(2rem, 4vw, 2.75rem);
    --font-size-h3: clamp(1.5rem, 3vw, 1.875rem);
    --font-size-h4: clamp(1.25rem, 2.5vw, 1.5rem);
    --font-size-h5: 1.25rem;
    --font-size-h6: 1rem;
    
    /* Font Sizes - Body */
    --font-size-body: 1rem;
    --font-size-body-lg: 1.125rem;
    --font-size-body-sm: 0.875rem;
    --font-size-body-xs: 0.75rem;
    
    /* Font Weights */
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Line Heights */
    --line-height-tight: 1.2;
    --line-height-normal: 1.6;
    --line-height-relaxed: 1.75;
    
    /* ==================== 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: 5rem;
    --spacing-section: 5rem;
    
    /* ==================== BORDER RADIUS ==================== */
    
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --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(14, 165, 233, 0.4);
    --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.4);
    --shadow-glass-lg: 0 16px 48px 0 rgba(0, 0, 0, 0.5);
    
    /* Neon Shadows */
    --shadow-neon-cyan: 0 0 15px var(--color-neon-cyan), 0 0 30px rgba(14, 165, 233, 0.5), 0 0 45px rgba(14, 165, 233, 0.3);
    --shadow-neon-purple: 0 0 15px var(--color-neon-purple), 0 0 30px rgba(2, 132, 199, 0.5);
    --shadow-neon-pink: 0 0 15px var(--color-neon-pink), 0 0 30px rgba(12, 74, 110, 0.5);
    --shadow-neon-multi: 0 0 20px var(--color-neon-cyan), 0 0 40px var(--color-neon-purple), 0 0 60px var(--color-neon-pink);
    
    /* ==================== GRADIENTS ==================== */
    
    --gradient-primary: linear-gradient(135deg, var(--color-neon-cyan) 0%, var(--color-neon-purple) 50%, var(--color-neon-pink) 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.02) 100%);
    --gradient-shine: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    --gradient-accent: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
    
    /* ==================== TRANSITIONS ==================== */
    
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base-alt: all 0.3s ease;
    --transition-smooth: 0.5s cubic-bezier(0.22, 1, 0.36, 1);
    --transition-bounce: 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
    --transition-slow: 0.5s ease;
    
    /* ==================== Z-INDEX SCALE ==================== */
    
    --z-dropdown: 100;
    --z-sticky: 1000;
    --z-modal: 9000;
    --z-preloader: 9999;
    --z-skip-to-content: 10000;
    
    /* ==================== RESPONSIVE BREAKPOINTS ==================== */
    
    /* Mobile First Approach */
    --bp-xs: 320px;      /* Extra small phones */
    --bp-sm: 480px;      /* Small phones */
    --bp-md: 768px;      /* Tablets */
    --bp-lg: 1024px;     /* Desktops */
    --bp-xl: 1280px;     /* Large desktops */
    --bp-2xl: 1536px;    /* Extra large screens */
    
    /* ==================== ALIASES FOR BACKWARD COMPATIBILITY ==================== */
    
    /* Maintain compatibility with existing code */
    --primary: var(--color-primary);
    --primary-light: var(--color-primary-light);
    --primary-dark: var(--color-primary-dark);
    
    --accent: var(--color-accent);
    --accent-light: var(--color-accent-light);
    --accent-dark: var(--color-accent-dark);
    --accent-glow: var(--color-accent-glow);
    --accent-cyan: var(--color-accent);
    
    --secondary: var(--color-secondary);
    --secondary-light: var(--color-secondary-light);
    --secondary-teal: var(--color-secondary);
    
    --neon-cyan: var(--color-neon-cyan);
    --neon-cyan-soft: var(--color-neon-cyan-soft);
    --neon-purple: var(--color-neon-purple);
    --neon-purple-soft: var(--color-neon-purple-soft);
    --neon-pink: var(--color-neon-pink);
    --neon-pink-soft: var(--color-neon-pink-soft);
    --neon-blue: var(--color-neon-blue);
    --neon-blue-soft: var(--color-neon-blue-soft);
    --neon-green: var(--color-neon-green);
    --neon-gold: var(--color-neon-gold);
    --neon-orange: var(--color-neon-orange);
    
    --white: var(--color-white);
    --gray-50: var(--color-gray-50);
    --gray-100: var(--color-gray-100);
    --gray-200: var(--color-gray-200);
    --gray-300: var(--color-gray-300);
    --gray-400: var(--color-gray-400);
    --gray-500: var(--color-gray-500);
    --gray-600: var(--color-gray-600);
    --gray-700: var(--color-gray-700);
    --gray-800: var(--color-gray-800);
    --gray-900: var(--color-gray-900);
    
    --glass-bg-hover: var(--glass-bg-hover);
    --glass-bg-active: var(--glass-bg-active);
    --glass-shadow: var(--shadow-glass);
    --glass-shadow-lg: var(--shadow-glass-lg);
}