/* ==========================================================================
   Design Tokens & CSS Variables - Research Loop
   Allows effortless re-branding, dark/light customization, and typography scaling.
   ========================================================================== */

:root {
  /* Brand Palette (Deep Teal, Midnight Navy & Champagne Gold) */
  --primary: #147D7A;          /* Deep Teal */
  --primary-hover: #0F9B8E;    /* Lighter Teal Hover */
  --primary-dark: #071C2C;     /* Midnight Navy */
  --primary-light: #E6F5F4;    /* Pale Teal Tint */
  --primary-glow: rgba(20, 125, 122, 0.15);

  --secondary: #102A43;        /* Deep Navy */
  --secondary-hover: #071C2C;
  --secondary-light: #E8EDF2;

  --accent: #C9A227;           /* Champagne Gold */
  --accent-hover: #A8871F;
  --accent-light: #FBF5E0;
  --accent-gradient: linear-gradient(135deg, #D4AF37 0%, #C9A227 100%);

  --brand-gradient: linear-gradient(135deg, #071C2C 0%, #102A43 50%, #147D7A 100%);
  --hero-gradient: linear-gradient(180deg, #FAF6F0 0%, #F5EDE0 100%);
  --surface-gradient: linear-gradient(145deg, #F5EDE0 0%, #FAF6F0 100%);

  /* Neutral Spectrum */
  --bg-body: #FAF6F0;
  --bg-surface: #F5EDE0;
  --bg-surface-elevated: #F5EDE0;
  --bg-muted: #F5EDE0;
  --bg-dark: #071C2C;
  --bg-dark-surface: #102A43;

  --text-main: #1e293b;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --text-inverse: #ffffff;
  --text-on-dark-muted: #cbd5e1;

  --border-color: #e2e8f0;
  --border-color-subtle: #F5EDE0;
  --border-color-dark: #102A43;

  --success: #10b981;
  --success-bg: #ecfdf5;
  --warning: #f59e0b;
  --warning-bg: #fffbeb;
  --danger: #ef4444;
  --danger-bg: #fef2f2;
  --info: #3b82f6;

  /* Typography */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-heading: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-accent: 'Bebas Neue', Impact, sans-serif;

  /* Font Weights */
  --fw-normal: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;
  --fw-extrabold: 800;

  /* Spacing Scale */
  --space-1: 0.25rem;  /* 4px */
  --space-2: 0.5rem;   /* 8px */
  --space-3: 0.75rem;  /* 12px */
  --space-4: 1rem;     /* 16px */
  --space-5: 1.25rem;  /* 20px */
  --space-6: 1.5rem;   /* 24px */
  --space-8: 2rem;     /* 32px */
  --space-10: 2.5rem;  /* 40px */
  --space-12: 3rem;    /* 48px */
  --space-16: 4rem;    /* 64px */
  --space-20: 5rem;    /* 80px */
  --space-24: 6rem;    /* 96px */

  /* Border Radius */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 2px 4px 0 rgba(7, 28, 44, 0.06);
  --shadow-md: 0 6px 16px -2px rgba(7, 28, 44, 0.08), 0 2px 6px -1px rgba(7, 28, 44, 0.04);
  --shadow-lg: 0 14px 28px -4px rgba(7, 28, 44, 0.1), 0 8px 10px -4px rgba(7, 28, 44, 0.05);
  --shadow-xl: 0 24px 48px -8px rgba(7, 28, 44, 0.14);
  --shadow-glow: 0 0 30px rgba(20, 125, 122, 0.18);
  --shadow-card-hover: 0 20px 35px -8px rgba(20, 125, 122, 0.12), 0 4px 10px -2px rgba(0, 0, 0, 0.04);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);

  /* Max widths */
  --container-max: 1240px;
  --container-narrow: 920px;
}