:root {
  /* Color Variables */
  --color-primary: #3563E9;
  --color-primary-light: #5981F8;
  --color-primary-dark: #2046B3;
  --color-secondary: #FFFFFF;
  --color-secondary-dark: #F7F9FC;
  --color-accent: #FF4C3B;
  --color-accent-light: #FF7A6D;
  --color-accent-dark: #E42D1C;
  
  /* Status Colors */
  --color-success: #34C759;
  --color-success-light: #5AD57E;
  --color-success-dark: #249A41;
  --color-warning: #FFCC00;
  --color-warning-light: #FFD633;
  --color-warning-dark: #CCA300;
  --color-error: #FF3B30;
  --color-error-light: #FF635B;
  --color-error-dark: #CC2F26;
  
  /* Neutral Colors */
  --color-text-primary: #1A202C;
  --color-text-secondary: #596780;
  --color-text-tertiary: #90A3BF;
  --color-border: #C3D4E9;
  --color-divider: #E9ECF5;
  --color-background: #F8F9FD;
  --color-card: #FFFFFF;
  
  /* Shadow */
  --shadow-sm: 0 1px 2px 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);
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  --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 Weights */
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Spacing (8px 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 */
  
  /* Border Radius */
  --radius-sm: 0.125rem;  /* 2px */
  --radius-md: 0.25rem;   /* 4px */
  --radius-lg: 0.5rem;    /* 8px */
  --radius-xl: 0.75rem;   /* 12px */
  --radius-2xl: 1rem;     /* 16px */
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;
  
  /* Z-index */
  --z-index-dropdown: 1000;
  --z-index-sticky: 1020;
  --z-index-fixed: 1030;
  --z-index-modal-backdrop: 1040;
  --z-index-modal: 1050;
  --z-index-popover: 1060;
  --z-index-tooltip: 1070;
  
  /* Container widths */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
}

/* Dark Mode Variables */
[data-theme="dark"] {
  --color-primary: #3563E9;
  --color-primary-light: #5981F8;
  --color-primary-dark: #2046B3;
  --color-secondary: #1A1D2A;
  --color-secondary-dark: #12141F;
  --color-accent: #FF4C3B;
  
  /* Status Colors */
  --color-success: #34C759;
  --color-warning: #FFCC00;
  --color-error: #FF3B30;
  
  /* Neutral Colors */
  --color-text-primary: #F7F9FC;
  --color-text-secondary: #CED5E1;
  --color-text-tertiary: #90A3BF;
  --color-border: #384053;
  --color-divider: #2A3041;
  --color-background: #12141F;
  --color-card: #1A1D2A;
  
  /* Shadow */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
}