/* =============================================================================
   tokens.css — narcissus.black design system  ·  v1.0
   =============================================================================
   Drop-in stylesheet. Source of truth for tokens + reusable primitives.
   See MIGRATION.md (sibling file) for refactor instructions.

   STRUCTURE
     1. Tokens                 :root custom properties
        1.1 Color
        1.2 Typography
        1.3 Spacing
        1.4 Radius
        1.5 Shadow
        1.6 Motion
        1.7 Z-index
     2. Base                   minimal additions to global reset
     3. Layout primitives      .section, .stack, .cluster, .split
     4. Component primitives   .card, .btn, .tag, .label, .eyebrow
     5. Typography utilities   .t-display, .t-h2, .t-mut, etc.
     6. Reduced-motion guard
   ============================================================================= */


/* =============================================================================
   1. TOKENS
   ============================================================================= */

:root{

  /* ---- 1.1 Color --------------------------------------------------------- */

  /* Surfaces (kept identical to existing project tokens) */
  --bg:    #080510;
  --surf:  #0f0a1c;
  --card:  #150d28;
  --txt:   #ede8f8;
  --mut:   #c1b2da;
  --faint:  #1c1232;
  --faint2: #6f5a92;

  /* Brand + chrome accents — the ONLY two used in non-data UI */
  --pur: #c084fc;
  --cyn: #67e8f9;

  /* Data colors — only inside data viz (probability bars, charts, status). */
  --grn:  #4ade80;
  --gld:  #fbbf24;
  --red:  #f87171;
  --pink: #f472b6;

  /* Borders — three steps */
  --bd:  rgba(255,255,255,.07);
  --bd2: rgba(255,255,255,.13);
  --bd3: rgba(255,255,255,.20);


  /* ---- 1.2 Typography ---------------------------------------------------- */

  --display: 'Fraunces','Times New Roman',Georgia,serif;
  --body:    'Geist',system-ui,-apple-system,'Segoe UI',sans-serif;
  --mono:    'JetBrains Mono',ui-monospace,'SFMono-Regular',Menlo,monospace;

  --t-mini: 9px;
  --t-xs:  11px;
  --t-sm:  12px;
  --t-base:14px;
  --t-md:  16px;
  --t-lg:  20px;
  --t-xl:  28px;

  --lh-tight:  1.1;
  --lh-normal: 1.45;
  --lh-loose:  1.65;

  --tracking-mono: .12em;


  /* ---- 1.3 Spacing (8pt-based, exponential-ish) -------------------------- */

  --s-1:  4px;
  --s-2:  8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 24px;
  --s-6: 32px;
  --s-7: 48px;
  --s-8: 64px;
  --s-9: 96px;


  /* ---- 1.4 Radius -------------------------------------------------------- */

  --r-1: 6px;       /* tags, tiny inputs */
  --r-2: 10px;      /* buttons, small cards */
  --r-3: 14px;      /* surface cards */
  --r-4: 22px;      /* hero containers */
  --r-pill: 999px;  /* pills, badges */


  /* ---- 1.5 Shadow -------------------------------------------------------- */

  --shadow-1: 0 1px 2px rgba(0,0,0,.4);
  --shadow-2: 0 8px 24px rgba(0,0,0,.5);
  --shadow-3: 0 22px 60px rgba(0,0,0,.6);


  /* ---- 1.6 Motion -------------------------------------------------------- */

  --ease:     cubic-bezier(.16,1,.3,1);   /* default, "premium" decel */
  --ease-out: cubic-bezier(.2,.8,.2,1);

  --d-fast: 150ms;
  --d-base: 250ms;
  --d-slow: 400ms;


  /* ---- 1.7 Z-index ------------------------------------------------------- */

  --z-base:    1;
  --z-sticky:  100;
  --z-nav:     200;
  --z-modal:   300;
  --z-tooltip: 400;
}


/* =============================================================================
   2. BASE — minimal additions (the existing global reset already has *{...})
   ============================================================================= */

a:focus-visible,
button:focus-visible,
[role="button"]:focus-visible{
  outline: 2px solid var(--cyn);
  outline-offset: 2px;
  border-radius: var(--r-1);
}


/* =============================================================================
   3. LAYOUT PRIMITIVES
   ============================================================================= */

/* ---- 3.1 .section — vertical rhythm wrapper ------------------------------- */

.section{
  position: relative;
  padding-block: var(--s-9);
  padding-inline: var(--s-6);
}
.section--sm{ padding-block: var(--s-7); }
.section--lg{ padding-block: calc(var(--s-9) + var(--s-5)); }

.section__inner{
  max-width: 1080px;
  margin: 0 auto;
}
.section__inner--narrow{ max-width: 760px; }
.section__inner--wide{   max-width: 1240px; }


/* ---- 3.2 .stack — vertical flex with gap ---------------------------------- */

.stack       { display: flex; flex-direction: column; gap: var(--s-4); }
.stack--xs   { gap: var(--s-2); }
.stack--sm   { gap: var(--s-3); }
.stack--lg   { gap: var(--s-6); }
.stack--xl   { gap: var(--s-7); }


/* ---- 3.3 .cluster — horizontal flex that wraps ---------------------------- */

.cluster      { display: flex; flex-wrap: wrap; gap: var(--s-3); align-items: center; }
.cluster--xs  { gap: var(--s-1); }
.cluster--sm  { gap: var(--s-2); }
.cluster--lg  { gap: var(--s-5); }


/* ---- 3.4 .split — 2-column with hairline divider -------------------------- */

.split{
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--surf);
  border: 1px solid var(--bd);
  border-radius: var(--r-3);
  overflow: hidden;
}
.split > * + *{ border-left: 1px solid var(--bd); }

.split__pane{ padding: var(--s-5); }
.split__pane--accent{ background: color-mix(in srgb, var(--pur)  4%, transparent); }
.split__pane--good  { background: color-mix(in srgb, var(--grn)  3%, transparent); }
.split__pane--warn  { background: color-mix(in srgb, var(--gld)  3%, transparent); }
.split__pane--bad   { background: color-mix(in srgb, var(--red)  3%, transparent); }
.split__pane--pink  { background: color-mix(in srgb, var(--pink) 3%, transparent); }
.split__pane--cyan  { background: color-mix(in srgb, var(--cyn)  3%, transparent); }

@media (max-width: 720px){
  .split{ grid-template-columns: 1fr; }
  .split > * + *{ border-left: 0; border-top: 1px solid var(--bd); }
}


/* =============================================================================
   4. COMPONENT PRIMITIVES
   ============================================================================= */

.card{
  background: var(--surf);
  border: 1px solid var(--bd);
  border-radius: var(--r-3);
  padding: var(--s-5);
  transition: border-color var(--d-base) var(--ease),
              transform   var(--d-base) var(--ease);
}
.card:hover{ border-color: var(--bd2); }

.card--soft   { background: rgba(255,255,255,.02); }
.card--accent {
  background: color-mix(in srgb, var(--pur) 4%, transparent);
  border-color: color-mix(in srgb, var(--pur) 20%, transparent);
}
.card--flush  { padding: 0; overflow: hidden; }
.card--sm     { padding: var(--s-4); border-radius: var(--r-2); }

.btn{
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  padding: var(--s-3) var(--s-5);
  border-radius: var(--r-2);
  font: 500 var(--t-base)/1 var(--body);
  letter-spacing: -.005em;
  border: 1px solid transparent;
  background: transparent;
  color: var(--txt);
  cursor: pointer;
  text-decoration: none;
  transition: transform   var(--d-base) var(--ease),
              background  var(--d-base) var(--ease),
              border-color var(--d-base) var(--ease),
              box-shadow  var(--d-base) var(--ease),
              color       var(--d-base) var(--ease);
}
.btn svg{ transition: transform var(--d-base) var(--ease); }
.btn:hover svg{ transform: translateX(3px); }

.btn:hover{ transform: translateY(-1px); }

.btn--sm{
  padding: 10px 16px;
  font-size: var(--t-sm);
}
.btn--lg{
  padding: 16px 26px;
  font-size: var(--t-md);
}

.btn--primary{
  background: var(--pur);
  color: #080510;
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--pur) 55%, transparent),
    0 12px 28px -8px color-mix(in srgb, var(--pur) 45%, transparent);
}
.btn--primary:hover{
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--pur) 70%, transparent),
    0 18px 38px -8px color-mix(in srgb, var(--pur) 50%, transparent);
}

.btn--ghost{
  border-color: var(--bd2);
  color: var(--mut);
}
.btn--ghost:hover{
  border-color: var(--bd3);
  color: var(--txt);
  background: rgba(255,255,255,.02);
}

.btn--soft{
  background: color-mix(in srgb, var(--btn-accent, var(--pur)) 10%, transparent);
  border-color: color-mix(in srgb, var(--btn-accent, var(--pur)) 22%, transparent);
  color: var(--btn-accent, var(--pur));
}
.btn--soft:hover{
  background: color-mix(in srgb, var(--btn-accent, var(--pur)) 14%, transparent);
  border-color: color-mix(in srgb, var(--btn-accent, var(--pur)) 32%, transparent);
}

.btn--purple{ --btn-accent: var(--pur); }
.btn--cyan  { --btn-accent: var(--cyn); }
.btn--green { --btn-accent: var(--grn); }
.btn--gold  { --btn-accent: var(--gld); }
.btn--red   { --btn-accent: var(--red); }
.btn--pink  { --btn-accent: var(--pink); }

.tag{
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--r-1);
  border: 1px solid color-mix(in srgb, var(--tag-accent, var(--pur)) 22%, transparent);
  background: color-mix(in srgb, var(--tag-accent, var(--pur)) 8%, transparent);
  color: var(--tag-accent, var(--pur));
  font-family: var(--body);
  font-size: var(--t-xs);
  line-height: 1.3;
}

.tag--purple{ --tag-accent: var(--pur); }
.tag--cyan  { --tag-accent: var(--cyn); }
.tag--green { --tag-accent: var(--grn); }
.tag--gold  { --tag-accent: var(--gld); }
.tag--pink  { --tag-accent: var(--pink); }
.tag--red   { --tag-accent: var(--red); }

.label{
  font-family: var(--mono);
  font-size: var(--t-mini);
  letter-spacing: var(--tracking-mono);
  text-transform: uppercase;
}
.label--purple{ color: var(--pur); }
.label--cyan  { color: var(--cyn); }
.label--green { color: var(--grn); }
.label--gold  { color: var(--gld); }
.label--pink  { color: var(--pink); }
.label--red   { color: var(--red); }

.eyebrow{
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .22em;
  color: var(--mut);
  text-transform: uppercase;
}


/* =============================================================================
   5. TYPOGRAPHY UTILITIES
   ============================================================================= */

.t-display{
  font-family: var(--display);
  font-weight: 400;
  letter-spacing: -.025em;
  line-height: 1.02;
}

.t-h2{
  font-family: var(--body);
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -.02em;
}

.t-h2 em{
  color: var(--pur);
  font-style: normal;
}

.t-body{
  font-family: var(--body);
  font-size: var(--t-base);
  line-height: 1.8;
  color: var(--mut);
}

.t-body--sm{
  font-size: var(--t-sm);
  line-height: 1.65;
}

.t-strong{
  color: var(--txt);
  font-weight: 500;
}

.t-mono{
  font-family: var(--mono);
}

.t-muted{ color: var(--mut); }
.t-text{  color: var(--txt); }


/* =============================================================================
   6. REDUCED MOTION GUARD
   ============================================================================= */

@media (prefers-reduced-motion: reduce){
  html:focus-within{ scroll-behavior: auto; }
  *,
  *::before,
  *::after{
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}