/* ============================================
   CSS VARIABLES - DESIGN SYSTEM
   ============================================ */

:root {
    /* ===== COLOR PALETTE ===== */

    /* Background Colors */
    --color-bg-primary: #0a0e27;
    --color-bg-secondary: #1a1f3a;
    --color-bg-tertiary: #252b4a;

    /* Glass Effect */
    --color-glass-bg: rgba(255, 255, 255, 0.05);
    --color-glass-border: rgba(255, 255, 255, 0.1);
    --color-glass-hover: rgba(255, 255, 255, 0.08);

    /* Brand Colors */
    --color-primary: #3b82f6;
    --color-primary-light: #60a5fa;
    --color-primary-dark: #2563eb;

    --color-accent: #a855f7;
    --color-accent-light: #c084fc;
    --color-accent-dark: #9333ea;

    --color-secondary: #ec4899;
    --color-secondary-light: #f472b6;

    /* Text Colors */
    --color-text-primary: #ffffff;
    --color-text-secondary: rgba(255, 255, 255, 0.8);
    --color-text-tertiary: rgba(255, 255, 255, 0.6);
    --color-text-muted: rgba(255, 255, 255, 0.4);

    /* Status Colors */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #3b82f6;

    /* ===== GRADIENTS ===== */
    --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    --gradient-secondary: linear-gradient(135deg, var(--color-accent) 0%, var(--color-secondary) 100%);
    --gradient-bg: linear-gradient(180deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
    --gradient-radial: radial-gradient(circle at 50% 0%, rgba(59, 130, 246, 0.15) 0%, transparent 50%);

    /* ===== TYPOGRAPHY ===== */

    /* Font Families */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Outfit', 'Inter', sans-serif;
    --font-code: 'Fira Code', 'Courier New', monospace;

    /* Font Sizes */
    --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-size-4xl: 2.25rem;
    /* 36px */
    --font-size-5xl: 3rem;
    /* 48px */
    --font-size-6xl: 3.75rem;
    /* 60px */
    --font-size-7xl: 4.5rem;
    /* 72px */

    /* Font Weights */
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;

    /* Line Heights */
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* ===== SPACING SCALE (4px base grid) ===== */
    --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 */

    /* ===== BORDER RADIUS ===== */
    --radius-sm: 0.375rem;
    /* 6px */
    --radius-md: 0.5rem;
    /* 8px */
    --radius-lg: 0.75rem;
    /* 12px */
    --radius-xl: 1rem;
    /* 16px */
    --radius-2xl: 1.5rem;
    /* 24px */
    --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), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* Glow Shadows */
    --shadow-glow-primary: 0 0 20px rgba(59, 130, 246, 0.3), 0 0 40px rgba(59, 130, 246, 0.1);
    --shadow-glow-accent: 0 0 20px rgba(168, 85, 247, 0.3), 0 0 40px rgba(168, 85, 247, 0.1);
    --shadow-glow-secondary: 0 0 20px rgba(236, 72, 153, 0.3), 0 0 40px rgba(236, 72, 153, 0.1);

    /* ===== BLUR VALUES ===== */
    --blur-sm: 4px;
    --blur-md: 8px;
    --blur-lg: 12px;
    --blur-xl: 16px;
    --blur-2xl: 24px;

    /* ===== TRANSITIONS ===== */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slower: 500ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Easing Functions */
    --ease-in: cubic-bezier(0.4, 0, 1, 1);
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);

    /* ===== 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;

    /* ===== BREAKPOINTS ===== */
    --breakpoint-sm: 640px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1280px;
    --breakpoint-2xl: 1536px;

    /* ===== CONTAINER WIDTHS ===== */
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1280px;
    --container-2xl: 1400px;
}