/* CSS Custom Properties (Variables) */
:root {
  /* Colors - Crypto Nova Brand Palette */
  --color-primary: #FFD700;        /* Gold */
  --color-primary-dark: #DAA520;   /* Dark Gold */
  --color-primary-light: #FFF8DC;  /* Light Gold */
  
  --color-secondary: #C0C0C0;      /* Silver */
  --color-secondary-dark: #808080; /* Dark Silver */
  --color-secondary-light: #F5F5F5; /* Light Silver */
  
  --color-accent: #00FFFF;         /* Cyan - Tech accent */
  --color-accent-dark: #008B8B;    /* Dark Cyan */
  
  --color-background: #0A0A0A;     /* Deep Black */
  --color-background-alt: #1A1A1A; /* Dark Gray */
  --color-background-card: #2A2A2A; /* Card Background */
  
  --color-text-primary: #FFFFFF;   /* White */
  --color-text-secondary: #CCCCCC; /* Light Gray */
  --color-text-muted: #999999;     /* Muted Gray */
  
  --color-success: #00FF88;        /* Success Green */
  --color-warning: #FFA500;        /* Warning Orange */
  --color-error: #FF4444;          /* Error Red */
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  --gradient-secondary: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
  --gradient-hero: linear-gradient(135deg, #0A0A0A 0%, #1A1A1A 50%, #2A2A2A 100%);
  --gradient-card: linear-gradient(135deg, rgba(42, 42, 42, 0.8) 0%, rgba(26, 26, 26, 0.9) 100%);
  
  /* Typography */
  --font-family-primary: 'Inter', system-ui, -apple-system, sans-serif;
  --font-family-heading: 'Space Grotesk', system-ui, -apple-system, sans-serif;
  --font-family-mono: 'JetBrains Mono', 'Courier New', monospace;
  
  /* Font Weights */
  --font-weight-light: 300;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  --font-weight-black: 900;
  
  /* 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 */
  
  /* Line Heights */
  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 2;
  
  /* Spacing */
  --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: 0.25rem;   /* 4px */
  --radius-base: 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, 255, 255, 0.05);
  --shadow-base: 0 1px 3px 0 rgba(0, 255, 255, 0.1), 0 1px 2px 0 rgba(0, 255, 255, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 255, 255, 0.1), 0 4px 6px -2px rgba(0, 255, 255, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 255, 255, 0.1), 0 10px 10px -5px rgba(0, 255, 255, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 255, 255, 0.25);
  --shadow-glow: 0 0 20px rgba(255, 215, 0, 0.3);
  --shadow-glow-strong: 0 0 40px rgba(255, 215, 0, 0.5);
  
  /* 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;
  --z-toast: 1080;
  
  /* Breakpoints */
  --breakpoint-sm: 375px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1280px;
  --breakpoint-xl: 1440px;
  
  /* Container */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
  --container-2xl: 1440px;
  
  /* Transitions */
  --transition-fast: 0.15s ease-out;
  --transition-base: 0.25s ease-out;
  --transition-slow: 0.35s ease-out;
  
  /* Animation Durations */
  --duration-fast: 150ms;
  --duration-base: 250ms;
  --duration-slow: 350ms;
  --duration-slower: 500ms;
  
  /* Timing 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);
  
  /* Grid */
  --grid-columns: 12;
  --grid-gap: var(--space-6);
  --grid-gap-sm: var(--space-4);
  
  /* Effects */
  --blur-sm: blur(4px);
  --blur-base: blur(8px);
  --blur-lg: blur(16px);
  --blur-xl: blur(24px);
  
  /* Opacity */
  --opacity-0: 0;
  --opacity-25: 0.25;
  --opacity-50: 0.5;
  --opacity-75: 0.75;
  --opacity-100: 1;
}

/* Dark Theme Overrides (Default) */
[data-theme="dark"] {
  --color-background: #0A0A0A;
  --color-background-alt: #1A1A1A;
  --color-text-primary: #FFFFFF;
  --color-text-secondary: #CCCCCC;
}

/* Light Theme Overrides */
[data-theme="light"] {
  --color-background: #FFFFFF;
  --color-background-alt: #F8F9FA;
  --color-background-card: #FFFFFF;
  --color-text-primary: #1A1A1A;
  --color-text-secondary: #666666;
  --color-text-muted: #999999;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-base: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 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);
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  :root {
    --transition-fast: none;
    --transition-base: none;
    --transition-slow: none;
    --duration-fast: 0ms;
    --duration-base: 0ms;
    --duration-slow: 0ms;
    --duration-slower: 0ms;
  }
}

/* High Contrast Support */
@media (prefers-contrast: high) {
  :root {
    --color-text-secondary: var(--color-text-primary);
    --color-text-muted: var(--color-text-secondary);
  }
}