:root {
  /* Color Palette */
  --color-primary: #0f172a;       /* Deep Navy */
  --color-secondary: #2563eb;     /* Royal Blue */
  --color-accent: #38bdf8;        /* Sky Blue */
  --color-bg-white: #ffffff;
  --color-bg-light: #f8fafc;      /* Light Slate Gray */
  --color-text-dark: #111827;     /* Almost Black */
  --color-text-muted: #4b5563;    /* Slate Gray */
  --color-text-light: #9ca3af;   /* Muted Gray */
  --color-border: #e2e8f0;
  --color-shadow: rgba(15, 23, 42, 0.08);
  
  /* Modern Dark Accents */
  --color-navy-dark: #0b0f19;     /* Deep Slate Navy for dark theme sections */
  --color-card-border: rgba(255, 255, 255, 0.08);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  
  /* Font Sizes */
  --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: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  --text-7xl: 4.5rem;

  /* Font Weights */
  --weight-light: 300;
  --weight-normal: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;

  /* Spacing */
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-12: 3rem;
  --spacing-16: 4rem;
  --spacing-20: 5rem;
  --spacing-24: 6rem;
  
  /* Borders and Shadows */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 1px 2px 0 var(--color-shadow);
  --shadow-md: 0 4px 6px -1px var(--color-shadow), 0 2px 4px -2px var(--color-shadow);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.05), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.06), 0 8px 10px -6px rgba(15, 23, 42, 0.06);
  --shadow-premium: 0 25px 50px -12px rgba(15, 23, 42, 0.12);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Containers */
  --container-width: 1200px;
  --header-height: 80px;
  --section-padding: 8rem;
}