/* ============================================================================
   CSS Variables - Design Tokens
   ============================================================================ */

:root {
  /* Colors */
  --color-primary: #0066FF;
  --color-primary-dark: #0052CC;
  --color-secondary: #00D084;
  --color-accent: #FF6B35;
  --color-foreground: #1A1A1A;
  --color-background: #FFFFFF;
  --color-surface: #FFFFFF;
  --color-muted: #F5F5F5;
  --color-border: #E0E0E0;
  --color-text-light: #666666;
  --color-text-lighter: #999999;
  --color-success: #00D084;
  --color-error: #FF3B30;
  --color-warning: #FF9500;
  
  /* Dark Mode Colors */
  --color-dark-bg: #0F0F0F;
  --color-dark-card: #1A1A1A;
  --color-dark-text: #FFFFFF;
  --color-dark-text-secondary: #CCCCCC;
  
  /* Typography */
  --font-display: 'Poppins', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  --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;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;
  
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 2.5rem;
  --spacing-3xl: 3rem;
  --spacing-4xl: 4rem;
  --spacing-5xl: 5rem;
  --spacing-6xl: 6rem;
  
  /* 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-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  
  /* Container */
  --container-width: 1280px;
  --container-padding-mobile: 1rem;
  --container-padding-tablet: 1.5rem;
  --container-padding-desktop: 2rem;
  
  /* Breakpoints */
  --breakpoint-xs: 0;
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
  :root {
    --color-foreground: #FFFFFF;
    --color-background: #0F0F0F;
    --color-surface: #1A1A1A;
    --color-muted: #1A1A1A;
    --color-border: #333333;
    --color-text-light: #CCCCCC;
    --color-text-lighter: #999999;
  }
}