/* ============================================
   CourseraVoyant Inc. — Design Token System
   ============================================ */

:root {
  /* ---- Brand Colors ---- */
  --color-navy: #0A1F3D;
  --color-navy-light: #1B4079;
  --color-gold: #C5A572;
  --color-gold-light: #D4BC8E;
  --color-gold-dark: #A88B5A;

  /* ---- Neutral Colors ---- */
  --color-white: #FFFFFF;
  --color-bg-light: #F5F7FA;
  --color-bg-alt: #EEF1F6;
  --color-text-primary: #1A1A2E;
  --color-text-secondary: #6B7280;
  --color-text-muted: #9CA3AF;
  --color-border: #E5E7EB;
  --color-border-dark: #D1D5DB;

  /* ---- Semantic Colors ---- */
  --color-success: #10B981;
  --color-error: #EF4444;
  --color-warning: #F59E0B;
  --color-info: #3B82F6;

  /* ---- Overlay & Shadow ---- */
  --overlay-navy: rgba(10, 31, 61, 0.85);
  --overlay-navy-light: rgba(10, 31, 61, 0.65);
  --overlay-dark: rgba(0, 0, 0, 0.5);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.10);
  --shadow-lg: 0 12px 40px rgba(10, 31, 61, 0.15);
  --shadow-xl: 0 24px 60px rgba(10, 31, 61, 0.20);
  --shadow-gold: 0 8px 24px rgba(197, 165, 114, 0.30);

  /* ---- Typography ---- */
  --font-heading: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* ---- Font Sizes ---- */
  --fs-hero: clamp(2.5rem, 5vw, 4rem);
  --fs-h1: clamp(2rem, 4vw, 3rem);
  --fs-h2: clamp(1.75rem, 3vw, 2.5rem);
  --fs-h3: clamp(1.25rem, 2vw, 1.75rem);
  --fs-h4: 1.25rem;
  --fs-body-lg: 1.125rem;
  --fs-body: 1rem;
  --fs-body-sm: 0.875rem;
  --fs-caption: 0.75rem;
  --fs-overline: 0.6875rem;

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

  /* ---- Line Heights ---- */
  --lh-tight: 1.1;
  --lh-snug: 1.3;
  --lh-normal: 1.6;
  --lh-relaxed: 1.75;
  --lh-loose: 2;

  /* ---- Letter Spacing ---- */
  --ls-tight: -0.02em;
  --ls-normal: 0;
  --ls-wide: 0.025em;
  --ls-wider: 0.05em;
  --ls-widest: 0.12em;

  /* ---- Spacing Scale ---- */
  --space-3xs: 0.125rem;
  --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: 6rem;
  --space-5xl: 8rem;

  /* ---- Container ---- */
  --container-max: 1280px;
  --container-narrow: 860px;
  --container-wide: 1440px;
  --container-padding: 1.5rem;

  /* ---- Border Radius ---- */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* ---- 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);
  --transition-bounce: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* ---- Z-Index ---- */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-header: 1000;
  --z-overlay: 9000;
  --z-modal: 10000;

  /* ---- Header Height ---- */
  --header-height: 80px;
  --header-height-scrolled: 64px;
}