:root {
  --color-primary: #1B4F72;
  --color-primary-light: #2E86C1;
  --color-primary-dark: #0E2F44;
  --color-primary-rgb: 27, 79, 114;

  --color-secondary: #D4A537;
  --color-secondary-light: #F4D03F;
  --color-secondary-dark: #B7950B;
  --color-secondary-rgb: 212, 165, 55;

  --color-success: #27AE60;
  --color-success-light: #2ECC71;
  --color-success-dark: #1E8449;
  --color-success-rgb: 39, 174, 96;

  --color-warning: #F39C12;
  --color-error: #E74C3C;
  --color-error-light: #EC7063;
  --color-error-dark: #C0392B;
  --color-error-rgb: 231, 76, 60;

  --color-white: #FFFFFF;
  --color-gray-50: #F8F9FA;
  --color-gray-100: #F1F3F5;
  --color-gray-200: #E9ECEF;
  --color-gray-300: #DEE2E6;
  --color-gray-400: #CED4DA;
  --color-gray-500: #ADB5BD;
  --color-gray-600: #6C757D;
  --color-gray-700: #495057;
  --color-gray-800: #343A40;
  --color-gray-900: #212529;
  --color-black: #1A1A2E;

  --bg-primary: var(--color-white);
  --bg-secondary: var(--color-gray-50);
  --bg-tertiary: var(--color-gray-100);
  --bg-dark: var(--color-primary-dark);
  --bg-card: var(--color-white);
  --bg-overlay: rgba(27, 79, 114, 0.85);

  --text-primary: var(--color-gray-900);
  --text-secondary: var(--color-gray-700);
  --text-tertiary: var(--color-gray-600);
  --text-inverse: var(--color-white);
  --text-link: var(--color-primary);
  --text-link-hover: var(--color-primary-dark);

  --font-heading: 'Poppins', 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Inter', 'Roboto', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;
  --text-4xl: 2.5rem;
  --text-5xl: 3.5rem;
  --text-6xl: 4.5rem;

  --leading-none: 1;
  --leading-tight: 1.1;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;

  --font-light: 300;
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;

  --space-0: 0;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
  --container-2xl: 1536px;
  --container-full: 100%;

  --radius-none: 0;
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
  --shadow-focus: 0 0 0 3px rgba(27, 79, 114, 0.4);

  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;
  --transition-bounce: 400ms cubic-bezier(0.68, -0.55, 0.265, 1.55);

  --z-index-dropdown: 100;
  --z-index-sticky: 200;
  --z-index-fixed: 300;
  --z-index-modal-backdrop: 400;
  --z-index-modal: 500;
  --z-index-popover: 600;
  --z-index-tooltip: 700;
  --z-index-toast: 800;

  --header-height: 4.5rem;
  --header-height-mobile: 4rem;

  --sidebar-width: 16rem;
  --sidebar-collapsed-width: 4rem;

  --focus-ring: 0 0 0 3px rgba(27, 79, 114, 0.4);
  --focus-ring-offset: 2px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: var(--color-gray-900);
    --bg-secondary: var(--color-gray-800);
    --bg-tertiary: var(--color-gray-700);
    --bg-card: var(--color-gray-800);
    --text-primary: var(--color-gray-50);
    --text-secondary: var(--color-gray-300);
    --text-tertiary: var(--color-gray-400);
  }
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --transition-fast: 0ms;
    --transition-normal: 0ms;
    --transition-slow: 0ms;
    --transition-bounce: 0ms;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}