/**
 * Color System - Single Source of Truth
 * 
 * All colors are defined here and MUST be used via CSS variables.
 * NO hardcoded hex values are allowed anywhere else in the codebase.
 */

:root {
  /* Background Colors */
  --color-bg-primary: #2A2A2A;
  --color-bg-secondary: #1C3A56;

  /* Navigation & Sidebar */
  --color-nav-sidebar: #1C3A56;

  /* Accent Colors */
  --color-accent-primary: #00BFC8;
  --color-accent-secondary: #A4D8E2;
  
  /* Pro-Level Red */
  --color-pro-red: #dc2626;
  --color-pro-red-light: #ef4444;

  /* Text Colors */
  --color-text-primary: #ffffff;
  --color-text-secondary: #cbd5e1;
  --color-text-muted: #94a3b8;

  /* Border Colors */
  --color-border-subtle: rgba(255, 255, 255, 0.08);
  
  /* Additional Semantic Colors */
  --color-border-accent: rgba(0, 191, 200, 0.2);
  --color-overlay-dark: rgba(42, 42, 42, 0.8);
  --color-overlay-light: rgba(255, 255, 255, 0.05);
  
  /* Spacing System */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Typography Scale */
  --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;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
  
  /* 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);
  
  /* Z-index Scale */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal: 300;
  --z-popover: 400;
  --z-tooltip: 500;
}