/* ============================================
   DESIGN TOKENS — Single source of truth
   All values derived from the visual system
   ============================================ */

:root {

  /* === COLORS === */

  /* Backgrounds */
  --bg-base:     #0A0A0F;
  --bg-elevated: #111118;
  --bg-surface:  #1A1A24;

  /* Borders */
  --border-subtle:  rgba(255, 255, 255, 0.06);
  --border-default: rgba(255, 255, 255, 0.10);
  --border-hover:   rgba(59, 130, 246, 0.35);

  /* Text */
  --text-primary:   rgba(255, 255, 255, 1.00);
  --text-secondary: rgba(255, 255, 255, 0.65);
  --text-tertiary:  rgba(255, 255, 255, 0.40);
  --text-disabled:  rgba(255, 255, 255, 0.25);

  /* Accent */
  --accent:       #5674ef;
  --accent-hover: #375ad8;
  --accent-glow:     rgba(59, 130, 246, 0.15);
  --accent-glow-md:  rgba(59, 130, 246, 0.25);
  --accent-gradient: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);

  /* === TYPOGRAPHY === */

  --font-display: 'Syne', system-ui, sans-serif;
  --font-text:    'Inter', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', monospace;

  /* Scale */
  --text-xs:   0.6875rem;  /* 11px */
  --text-sm:   0.875rem;   /* 14px */
  --text-base: 1rem;       /* 16px */
  --text-md:   1.125rem;   /* 18px */
  --text-lg:   1.25rem;    /* 20px */
  --text-xl:   1.5rem;     /* 24px */
  --text-2xl:  2rem;       /* 32px */
  --text-3xl:  2.5rem;     /* 40px */
  --text-4xl:  3rem;       /* 48px */
  --text-5xl:  4rem;       /* 64px */
  --text-6xl:  5.5rem;     /* 88px */
  --text-hero: clamp(1.75rem, 4vw, 6.5rem);

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

  --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 */
  --space-32: 8rem;      /* 128px */

  /* === LAYOUT === */

  --container-max:  1280px;
  --container-text: 680px;
  --container-cta:  560px;

  /* === BORDERS === */

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* === TRANSITIONS === */

  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in:       cubic-bezier(0.7, 0, 1, 1);
  --ease-standard: ease;

  --duration-fast:   150ms;
  --duration-base:   250ms;
  --duration-slow:   400ms;
  --duration-slower: 600ms;

  /* === SHADOWS === */

  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-card-hover: 0 8px 40px rgba(0, 0, 0, 0.5),
                       0 0 0 1px rgba(59, 130, 246, 0.20);
  --shadow-btn: 0 4px 16px rgba(59, 130, 246, 0.30);
  --shadow-btn-hover: 0 8px 24px rgba(59, 130, 246, 0.40);
}