/* NSLS Design Tokens — Modern Refresh */
:root {
  /* Colors */
  --color-navy: #335f83;
  --color-navy-dark: #19315a;
  --color-navy-light: #4a7a9e;
  --color-white: #ffffff;
  --color-gray-50: #f8f9fa;
  --color-gray-100: #f5f5f5;
  --color-gray-200: #e9ecef;
  --color-gray-300: #dee2e6;
  --color-gray-500: #6c757d;
  --color-gray-700: #495057;
  --color-gray-900: #212529;
  --color-success: #28a745;
  --color-error: #dc3545;

  /* NSLS Red accent palette */
  --color-accent: #C0181B;
  --color-accent-hover: #a01416;
  --color-accent-light: #fde8e8;
  --color-accent-glow: rgba(192, 24, 27, 0.25);

  /* Gradients */
  --gradient-hero: linear-gradient(135deg, #0f1f38 0%, #19315a 35%, #335f83 70%, #4a7a9e 100%);
  --gradient-accent: linear-gradient(135deg, #C0181B 0%, #e04347 100%);
  --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.03) 100%);

  /* Glass effect tokens */
  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.12);
  --glass-blur: 12px;

  /* Typography */
  --font-primary: 'Avenir', 'Nunito Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-weight-light: 300;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-black: 900;

  /* Font Sizes - Fluid */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
  --text-base: clamp(1rem, 0.925rem + 0.375vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.625vw, 1.375rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.625rem);
  --text-2xl: clamp(1.5rem, 1.2rem + 1.5vw, 2.25rem);
  --text-3xl: clamp(1.875rem, 1.4rem + 2.375vw, 3rem);
  --text-4xl: clamp(2.25rem, 1.5rem + 3.75vw, 4rem);
  --text-5xl: clamp(2.75rem, 2rem + 4.5vw, 5rem);

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;
  --space-6xl: 10rem;

  /* Layout */
  --max-width: 1200px;
  --max-width-narrow: 800px;
  --header-height: 72px;
  --border-radius: 10px;
  --border-radius-lg: 16px;
  --border-radius-xl: 24px;
  --border-radius-2xl: 32px;

  /* Shadows — navy-tinted */
  --shadow-sm: 0 1px 3px rgba(25, 49, 90, 0.06);
  --shadow-md: 0 4px 16px rgba(25, 49, 90, 0.08);
  --shadow-lg: 0 8px 32px rgba(25, 49, 90, 0.1);
  --shadow-xl: 0 16px 48px rgba(25, 49, 90, 0.14);
  --shadow-glow-accent: 0 4px 24px rgba(212, 160, 18, 0.3);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  --transition-bounce: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);

  /* Native accent color */
  accent-color: var(--color-accent);
}