:root {
  /* Background layers */
  --color-bg:           #0a0a0a;
  --color-surface-1:    #111111;
  --color-surface-2:    #1a1a1a;
  --color-surface-3:    #242424;

  /* Borders */
  --color-border:       #2a2a2a;
  --color-border-light: #3a3a3a;

  /* Text */
  --color-text-primary:   #f0f0f0;
  --color-text-secondary: #9a9a9a;
  --color-text-muted:     #5a5a5a;

  /* Accent — pulled from logo gradient */
  --color-accent:       #d8d8d8;
  --color-accent-dim:   #8a5c2e;
  --color-accent-glow:  rgba(176, 120, 64, 0.15);
  --color-accent-blue:  #4272c4;
  --color-accent-purple:#6b4a9e;
  --gradient-accent: linear-gradient(135deg, #4272c4 0%, #6b4a9e 50%, #b07840 100%);

  /* Functional */
  --color-danger:  #cc3333;
  --color-success: #2e7d52;

  /* Typography */
  --font-display:  'Arimo', 'Helvetica Neue', Arial, sans-serif;
  --font-mono:     'JetBrains Mono', 'Fira Code', 'Courier New', monospace;

  --size-xs:   0.75rem;   /* 12px */
  --size-sm:   0.875rem;  /* 14px */
  --size-base: 1rem;      /* 16px */
  --size-md:   1.125rem;  /* 18px */
  --size-lg:   1.375rem;  /* 22px */
  --size-xl:   1.75rem;   /* 28px */
  --size-2xl:  2.25rem;   /* 36px */
  --size-3xl:  3rem;      /* 48px */
  --size-4xl:  4rem;      /* 64px */
  --size-5xl:  5.5rem;    /* 88px */

  --weight-regular: 400;
  --weight-medium:  500;
  --weight-semibold:600;
  --weight-bold:    700;
  --weight-black:   900;

  --leading-tight:  1.1;
  --leading-snug:   1.3;
  --leading-normal: 1.6;
  --leading-loose:  1.8;

  --tracking-tight:  -0.02em;
  --tracking-normal:  0em;
  --tracking-wide:    0.08em;
  --tracking-wider:   0.15em;
  --tracking-widest:  0.25em;

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;
  --space-40: 10rem;

  /* Layout */
  --max-width:      1440px;
  --max-width-text: 720px;
  --nav-height:     72px;
  --gutter:         clamp(1.5rem, 5vw, 4rem);

  /* Border radius */
  --radius-sm:   2px;
  --radius-md:   4px;
  --radius-lg:   8px;
  --radius-full: 9999px;

  /* Transitions */
  --ease-default: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-in:      cubic-bezier(0.4, 0, 1, 1);
  --ease-out:     cubic-bezier(0, 0, 0.2, 1);
  --ease-spring:  cubic-bezier(0.175, 0.885, 0.32, 1.275);

  --duration-fast:   150ms;
  --duration-normal: 300ms;
  --duration-slow:   500ms;
  --duration-slower: 800ms;

  /* Shadows */
  --shadow-sm:    0 1px 3px rgba(0,0,0,0.4);
  --shadow-md:    0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg:    0 8px 32px rgba(0,0,0,0.6);
  --shadow-accent:0 0 24px var(--color-accent-glow);

  /* Z-index stack */
  --z-base:    0;
  --z-raised:  10;
  --z-overlay: 100;
  --z-modal:   200;
  --z-nav:     900;
  --z-top:     1000;
}