:root {
  /* Brand Colors - Plum Purple & Royal Blue Theme */
  --color-plum: #4B1D6D;
  --color-plum-dark: #371353;
  --color-plum-light: #F3EBF9;
  --color-plum-muted: #E5D5F2;

  --color-royal-blue: #0E437D;
  --color-royal-blue-dark: #092B52;
  --color-royal-blue-light: #EBF3FB;
  --color-royal-blue-muted: #D1E3F6;

  /* Semantic Aliases & Compatibility Tokens */
  --color-navy: var(--color-royal-blue-dark);
  --color-navy-light: var(--color-royal-blue);
  --color-purple: var(--color-plum);
  --color-purple-dark: var(--color-plum-dark);
  --color-purple-light: var(--color-plum-light);
  --color-royal: var(--color-royal-blue);
  --color-teal: var(--color-royal-blue); /* Theme alias for royal blue accent */
  --color-teal-light: var(--color-royal-blue-light);
  --color-gold: #D97706;
  --color-gold-light: #FEF3C7;

  --color-white: #FFFFFF;
  --color-slate-900: #0F172A;
  --color-slate-800: #1E293B;
  --color-slate-700: #334155;
  --color-slate-600: #475569;
  --color-slate-500: #64748B;
  --color-slate-400: #94A3B8;
  --color-slate-300: #CBD5E1;
  --color-slate-200: #E2E8F0;
  --color-slate-100: #F1F5F9;
  --color-slate-50: #F8FAFC;

  --color-blue: var(--color-royal-blue);
  --color-blue-dark: var(--color-royal-blue-dark);
  --color-indigo: var(--color-plum);
  --color-indigo-light: var(--color-plum-light);

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #4B1D6D 0%, #0E437D 100%);
  --gradient-accent: linear-gradient(135deg, #0E437D 0%, #4B1D6D 100%);
  --gradient-royal: linear-gradient(135deg, #092B52 0%, #371353 100%);
  --gradient-teal: linear-gradient(135deg, #4B1D6D 0%, #371353 100%);
  --gradient-plum: linear-gradient(135deg, #582C83 0%, #4B1D6D 100%);
  --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(243, 235, 249, 0.9) 100%);
  --gradient-hero: linear-gradient(135deg, rgba(75, 29, 109, 0.88) 0%, rgba(14, 67, 125, 0.92) 100%);

  /* System Color Assignments */
  --color-primary: #4B1D6D;
  --color-secondary: #0E437D;
  --color-accent: #0E437D;
  --color-text: #0F172A;
  --color-text-secondary: #475569;
  --color-text-muted: #94A3B8;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F8FAFC;
  --color-border: #E2E8F0;

  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-error: #EF4444;

  /* Typography */
  --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --fs-xs: 0.75rem;     /* 12px */
  --fs-sm: 0.875rem;    /* 14px */
  --fs-base: 1rem;      /* 16px */
  --fs-md: 1.125rem;    /* 18px */
  --fs-lg: 1.25rem;     /* 20px */
  --fs-xl: 1.5rem;      /* 24px */
  --fs-2xl: 1.875rem;   /* 30px */
  --fs-3xl: 2.25rem;    /* 36px */
  --fs-4xl: 3rem;       /* 48px */
  --fs-5xl: 3.75rem;    /* 60px */

  --fw-light: 300;
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;
  --fw-extrabold: 800;

  --lh-tight: 1.15;
  --lh-snug: 1.3;
  --lh-normal: 1.5;
  --lh-relaxed: 1.7;

  /* Spacing */
  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 5.5rem;
  --space-5xl: 7rem;

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 6px 12px -2px rgba(0, 0, 0, 0.06), 0 3px 6px -3px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 16px 24px -4px rgba(0, 0, 0, 0.06), 0 8px 12px -6px rgba(0, 0, 0, 0.03);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 10px 30px rgba(75, 29, 109, 0.25);
  --shadow-teal: 0 10px 30px rgba(14, 67, 125, 0.25);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Layout */
  --container-max: 1600px;
  --container-narrow: 840px;
  --container-padding: 2.5rem;
}