/* ============================================
   NISTERN — Design System Tokens
   Single source of truth for all design values
   ============================================ */

/* --- COLORS --- */
:root {
  --color-black:      #0A0A0A;
  --color-charcoal:   #1A1A1A;
  --color-green:      #C6F135;
  --color-white:      #FFFFFF;
  --color-offwhite:   #F5F5F0;
  --color-stone:      #888882;
  --color-stone-dark: #444440;
  --color-border:     rgba(255, 255, 255, 0.08);
  --color-border-light: rgba(0, 0, 0, 0.1);
}

/* --- TYPOGRAPHY --- */
:root {
  --font-display: 'Unbounded', sans-serif;
  --font-body:    'Inter', sans-serif;

  /* Size scale */
  --text-xs:   11px;
  --text-sm:   13px;
  --text-base: 16px;
  --text-lg:   18px;
  --text-xl:   22px;
  --text-2xl:  28px;
  --text-3xl:  36px;
  --text-4xl:  48px;
  --text-5xl:  64px;
  --text-hero: 96px;

  /* Weights */
  --weight-regular: 400;
  --weight-medium:  500;
  --weight-bold:    700;
  --weight-black:   900;

  /* Line heights */
  --leading-tight:  1.05;
  --leading-snug:   1.2;
  --leading-normal: 1.5;
  --leading-loose:  1.7;

  /* Letter spacing */
  --tracking-tight:  -0.02em;
  --tracking-normal:  0em;
  --tracking-wide:    0.05em;
  --tracking-wider:   0.1em;
  --tracking-widest:  0.15em;
}

/* --- SPACING --- */
:root {
  --space-1:  4px;
  --space-2:  8px;
  --space-3:  16px;
  --space-4:  24px;
  --space-5:  32px;
  --space-6:  48px;
  --space-7:  64px;
  --space-8:  96px;
  --space-9:  128px;
  --space-10: 160px;
}

/* --- LAYOUT --- */
:root {
  --container-max:  1280px;
  --container-text: 680px;
  --container-pad:  48px;
  --container-pad-mobile: 20px;
  --navbar-height:  72px;
  --navbar-height-mobile: 60px;
}

/* --- BORDER RADIUS --- */
:root {
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-pill: 100px;
  --radius-none: 0px;
}

/* --- TRANSITIONS --- */
:root {
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   400ms ease;
}

/* --- SHADOWS --- */
:root {
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.16);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.24);
}

/* --- Z-INDEX --- */
:root {
  --z-base:    1;
  --z-above:   10;
  --z-overlay: 100;
  --z-navbar:  300;
  --z-modal:   400;
}

@media (max-width: 767px) {
  :root {
    --space-9: 64px;
    --space-8: 48px;
    --space-7: 40px;
    --text-hero: 40px;
    --text-5xl: 32px;
    --text-4xl: 28px;
    --text-3xl: 24px;
    --text-2xl: 20px;
  }
}