/* Variables CSS */
:root {
  /* Color system */
  --color-primary: #0052FF;
  --color-primary-light: #2D74FF;
  --color-primary-dark: #0039B3;
  
  --color-secondary: #F7931A; /* Bitcoin orange */
  --color-secondary-light: #F9A942;
  --color-secondary-dark: #D67908;
  
  --color-accent: #00C087; /* Green for positive changes */
  --color-accent-light: #00E6A2;
  --color-accent-dark: #00906A;
  
  --color-error: #E03131;
  --color-warning: #F08C00;
  --color-success: #2F9E44;
  
  /* Neutral tones */
  --color-neutral-100: #F8F9FA;
  --color-neutral-200: #E9ECEF;
  --color-neutral-300: #DEE2E6;
  --color-neutral-400: #CED4DA;
  --color-neutral-500: #ADB5BD;
  --color-neutral-600: #6C757D;
  --color-neutral-700: #495057;
  --color-neutral-800: #343A40;
  --color-neutral-900: #212529;
  
  /* Background and text colors */
  --color-background: #FFFFFF;
  --color-background-alt: #F8F9FA;
  --color-background-dark: #05051B;
  
  --color-text-primary: #212529;
  --color-text-secondary: #495057;
  --color-text-tertiary: #6C757D;
  --color-text-light: #FFFFFF;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.05), 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.05), 0 4px 6px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.05), 0 10px 10px rgba(0, 0, 0, 0.02);
  
  /* Spacing system (8px grid) */
  --space-1: 0.25rem; /* 4px */
  --space-2: 0.5rem;  /* 8px */
  --space-3: 1rem;    /* 16px */
  --space-4: 1.5rem;  /* 24px */
  --space-5: 2rem;    /* 32px */
  --space-6: 3rem;    /* 48px */
  --space-7: 4rem;    /* 64px */
  --space-8: 6rem;    /* 96px */
  
  /* Typography */
  --font-size-xs: 0.75rem;   /* 12px */
  --font-size-sm: 0.875rem;  /* 14px */
  --font-size-md: 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-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  
  /* Line heights */
  --line-height-tight: 1.2;      /* For headings */
  --line-height-normal: 1.5;     /* For body text */
  --line-height-relaxed: 1.75;   /* For readable body text */
  
  /* Border radius */
  --radius-sm: 0.25rem;  /* 4px */
  --radius-md: 0.5rem;   /* 8px */
  --radius-lg: 0.75rem;  /* 12px */
  --radius-xl: 1rem;     /* 16px */
  --radius-full: 9999px;
  
  /* Container */
  --container-max-width: 1200px;
  --container-padding: var(--space-4);
  
  /* Z-index */
  --z-negative: -1;
  --z-elevate: 1;
  --z-dropdown: 10;
  --z-sticky: 100;
  --z-fixed: 200;
  --z-modal: 300;
  --z-popover: 400;
  --z-tooltip: 500;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;
}