/* CSS Custom Properties - Design System Foundation */

:root {
  /* ========================================
     COLOR PALETTE - Deep Blues & Gold
     ======================================== */

  /* Primary Blue Colors */
  --color-bourbon-dark: #0A2540;      /* Deep navy blue */
  --color-bourbon-medium: #1E4976;    /* Rich royal blue */
  --color-bourbon-light: #4A7BA7;     /* Bright blue */
  --color-bourbon-gold: #D4AF37;      /* Classic gold */

  /* Accent Colors */
  --color-copper: #C9A961;            /* Light gold accent */
  --color-cherry: #8B2635;            /* Cherry accent (kept) */
  --color-cream: #F5F5F0;             /* Light cream */
  --color-charcoal: #2C3E50;          /* Blue-tinted charcoal */

  /* Neutral Scale */
  --color-white: #FFFFFF;
  --color-off-white: #F8F9FA;
  --color-gray-light: #E8ECEF;
  --color-gray-medium: #6C757D;
  --color-gray-dark: #495057;
  --color-black: #1A202C;

  /* Semantic Colors */
  --color-primary: var(--color-bourbon-dark);
  --color-secondary: var(--color-bourbon-gold);
  --color-accent: var(--color-copper);
  --color-text-primary: var(--color-charcoal);
  --color-text-secondary: var(--color-gray-dark);
  --color-text-light: var(--color-gray-medium);
  --color-background: var(--color-off-white);
  --color-surface: var(--color-white);

  /* ========================================
     TYPOGRAPHY
     ======================================== */

  /* Font Families */
  --font-family-primary: 'Playfair Display', Georgia, serif;
  --font-family-secondary: 'Montserrat', 'Helvetica Neue', sans-serif;
  --font-family-accent: 'Cormorant Garamond', Georgia, serif;

  /* Font Sizes - Fluid Typography (scales with viewport) */
  --font-size-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --font-size-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
  --font-size-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --font-size-md: clamp(1.125rem, 1rem + 0.625vw, 1.5rem);
  --font-size-lg: clamp(1.5rem, 1.3rem + 1vw, 2rem);
  --font-size-xl: clamp(2rem, 1.7rem + 1.5vw, 3rem);
  --font-size-xxl: clamp(2.5rem, 2rem + 2.5vw, 4rem);

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

  /* Line Heights */
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* Letter Spacing */
  --letter-spacing-tight: -0.02em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.05em;
  --letter-spacing-wider: 0.1em;

  /* ========================================
     SPACING SYSTEM (8px base)
     ======================================== */

  --space-xs: 0.5rem;     /* 8px */
  --space-sm: 1rem;       /* 16px */
  --space-md: 1.5rem;     /* 24px */
  --space-lg: 2rem;       /* 32px */
  --space-xl: 3rem;       /* 48px */
  --space-xxl: 4rem;      /* 64px */
  --space-xxxl: 6rem;     /* 96px */

  /* ========================================
     LAYOUT
     ======================================== */

  /* Container Widths */
  --container-max-width: 1280px;
  --container-narrow: 960px;
  --container-wide: 1440px;
  --container-padding: var(--space-lg);

  /* Grid Gaps */
  --grid-gap-sm: var(--space-sm);
  --grid-gap-md: var(--space-md);
  --grid-gap-lg: var(--space-lg);
  --grid-gap-xl: var(--space-xl);

  /* ========================================
     BORDERS & RADIUS
     ======================================== */

  --border-width-thin: 1px;
  --border-width-medium: 2px;
  --border-width-thick: 4px;

  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;
  --radius-xl: 12px;

  /* ========================================
     SHADOWS
     ======================================== */

  --shadow-sm: 0 1px 3px rgba(29, 21, 18, 0.12);
  --shadow-md: 0 4px 6px rgba(29, 21, 18, 0.15);
  --shadow-lg: 0 10px 25px rgba(29, 21, 18, 0.2);
  --shadow-xl: 0 20px 40px rgba(29, 21, 18, 0.25);

  /* ========================================
     TRANSITIONS
     ======================================== */

  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 400ms ease-in-out;

  --easing-default: ease-in-out;
  --easing-in: ease-in;
  --easing-out: ease-out;

  /* ========================================
     Z-INDEX SCALE
     ======================================== */

  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-tooltip: 1060;

  /* ========================================
     BREAKPOINTS (for reference in JS)
     ======================================== */

  --breakpoint-tablet: 768px;
  --breakpoint-desktop: 1024px;
  --breakpoint-wide: 1440px;
}