/* CSS Custom Properties - Design System Variables */

:root {
  /* ===== BRAND COLORS ===== */
  --color-primary: #002F5D;
  --color-primary-dark: #001F3F;
  --color-primary-light: #004C8C;
  --color-secondary: #FFFFFF;
  --color-secondary-dark: #E8EEF5;

  /* ===== NEUTRAL COLORS ===== */
  --color-white: #FFFFFF;
  --color-black: #000000;
  --color-gray-100: #F7F7F7;
  --color-gray-200: #E5E5E5;
  --color-gray-300: #D4D4D4;
  --color-gray-400: #A3A3A3;
  --color-gray-500: #737373;
  --color-gray-600: #525252;
  --color-gray-700: #404040;
  --color-gray-800: #262626;
  --color-gray-900: #171717;

  /* ===== SEMANTIC COLORS ===== */
  --color-success: #10B981;
  --color-error: #EF4444;
  --color-warning: #F59E0B;

  /* ===== TEXT COLORS ===== */
  --color-text-primary: var(--color-gray-900);
  --color-text-secondary: var(--color-gray-600);
  --color-text-on-primary: var(--color-white);

  /* ===== BACKGROUND COLORS ===== */
  --color-bg-page: var(--color-white);
  --color-bg-section-alt: var(--color-secondary);

  /* ===== TYPOGRAPHY ===== */
  /* Font Families - System Font Stack */
  --font-family-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
  --font-family-heading: var(--font-family-primary);

  /* Font Sizes (rem units - based on 16px root) */
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.5rem;    /* 24px */
  --font-size-3xl: 1.875rem;  /* 30px */
  --font-size-4xl: 2.25rem;   /* 36px */
  --font-size-5xl: 3rem;      /* 48px */

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

  /* Line Heights */
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* ===== SPACING SYSTEM (8px base unit) ===== */
  --space-xs: 0.5rem;    /* 8px */
  --space-sm: 1rem;      /* 16px */
  --space-md: 1.5rem;    /* 24px */
  --space-lg: 2rem;      /* 32px */
  --space-xl: 3rem;      /* 48px */
  --space-2xl: 4rem;     /* 64px */
  --space-3xl: 6rem;     /* 96px */

  /* ===== LAYOUT ===== */
  --container-max-width: 1200px;
  --container-padding-mobile: var(--space-sm);    /* 16px */
  --container-padding-tablet: var(--space-lg);    /* 32px */
  --container-padding-desktop: var(--space-xl);   /* 48px */

  /* ===== BORDERS ===== */
  --border-width-thin: 1px;
  --border-width-medium: 2px;
  --border-width-thick: 4px;
  --border-color: var(--color-gray-300);

  /* ===== BORDER RADIUS ===== */
  --radius-sm: 0.25rem;   /* 4px */
  --radius-md: 0.5rem;    /* 8px */
  --radius-lg: 1rem;      /* 16px */
  --radius-full: 9999px;  /* Pill shape */

  /* ===== SHADOWS ===== */
  --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 -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* ===== TRANSITIONS ===== */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;

  /* ===== Z-INDEX LAYERS ===== */
  --z-index-base: 0;
  --z-index-dropdown: 100;
  --z-index-sticky: 200;
  --z-index-modal: 300;
  --z-index-tooltip: 400;

  /* ===== COOKIE BANNER COLORS ===== */
  --cookie-banner-bg: rgba(255, 255, 255, 0.95);    /* White background with 95% opacity */
  --cookie-banner-text: var(--color-primary);       /* Primary color text */
  --cookie-banner-border: var(--color-primary);     /* Primary color top border */
  --cookie-banner-button-bg: var(--color-primary);  /* Primary color buttons */
  --cookie-banner-button-text: var(--color-white);  /* White button text */
  --cookie-banner-button-hover: var(--color-primary-dark); /* Darker primary on hover */
}