:root {
  /* Colors - Primary */
  --color-primary: #0A1F3F;
  --color-primary-light: #132E5B;
  --color-primary-dark: #061027;

  /* Colors - Accent */
  --color-accent: #14A89E;
  --color-accent-light: #1EC4B8;
  --color-accent-dark: #0F8A82;

  /* Colors - Semantic */
  --color-success: #27AE60;
  --color-warning: #F39C12;
  --color-error: #E74C3C;
  --color-info: #3498DB;

  /* Colors - Neutrals */
  --color-white: #FFFFFF;
  --color-bg: #F8F9FA;
  --color-bg-alt: #EDEEF0;
  --color-bg-dark: #1E1F2B;
  --color-text: #1A1A2E;
  --color-text-secondary: #4A4A5E;
  --color-text-light: #7A7A8E;
  --color-text-muted: #A0A0B2;
  --color-border: #D1D1DC;
  --color-border-light: #E5E5ED;

  /* Colors - Roles */
  --color-role-admin: #8B0000;
  --color-role-support: #0066CC;
  --color-role-cabinet: #1A5C3A;

  /* Typography - Font Stacks */
  --font-primary: 'Inter', 'Manrope', 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', 'Cascadia Code', 'Consolas', monospace;

  /* Typography - Sizes */
  --text-xs: 0.75rem;    /* 12px */
  --text-sm: 0.875rem;   /* 14px */
  --text-base: 1rem;     /* 16px */
  --text-lg: 1.125rem;   /* 18px */
  --text-xl: 1.25rem;    /* 20px */
  --text-2xl: 1.5rem;    /* 24px */
  --text-3xl: 1.875rem;  /* 30px */
  --text-4xl: 2.25rem;   /* 36px */
  --text-5xl: 3rem;      /* 48px */

  /* Typography - Weights */
  --weight-light: 300;
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  --weight-extrabold: 800;

  /* Typography - Line Heights */
  --leading-none: 1;
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  --spacing-4xl: 96px;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(10, 31, 63, 0.05);
  --shadow-sm: 0 1px 3px rgba(10, 31, 63, 0.08), 0 1px 2px rgba(10, 31, 63, 0.06);
  --shadow-md: 0 4px 6px rgba(10, 31, 63, 0.07), 0 2px 4px rgba(10, 31, 63, 0.06);
  --shadow-lg: 0 10px 15px rgba(10, 31, 63, 0.08), 0 4px 6px rgba(10, 31, 63, 0.05);
  --shadow-xl: 0 20px 25px rgba(10, 31, 63, 0.10), 0 10px 10px rgba(10, 31, 63, 0.04);
  --shadow-focus: 0 0 0 3px rgba(20, 168, 158, 0.25);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Layout - Container */
  --container-max: 1200px;
  --container-narrow: 800px;
  --container-wide: 1400px;

  /* Layout - Sidebar */
  --sidebar-width: 240px;
  --sidebar-collapsed: 60px;

  /* Layout - Header & Topbar */
  --topbar-height: 56px;
  --header-height: 80px;

  /* Z-Index Scale */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-toast: 500;
}