/* ============================================================
   AI Speedforce — design tokens
   Single source of truth. Nothing below this file hardcodes a
   colour, size, radius, duration or z-index.

   Colour is derived from assets/img/aisf-logo.png by k-means
   (k=6, 92,172 opaque px) plus a chroma-weighted pass for the
   bolt. Hexes annotated [logo] are used verbatim from that
   extraction; the bolt stops are its four vertical band means.
   ============================================================ */

:root {
  /* ---------- Surfaces (dark-first) ---------- */
  --c-ink:        #120C1C;  /* page base, plum-black, hue 265 */
  --c-ink-deep:   #0C0714;  /* footer, deepest well */
  --c-surface:    #1D1430;  /* raised panel */
  --c-surface-2:  #2A1E42;  /* hover / nested panel */
  --c-line:       #3E2853;  /* hairline           [logo 27.0%] */
  --c-line-soft:  rgba(62, 40, 83, 0.55);
  --c-line-bright:#563870;  /* focused / active edge */

  /* ---------- Text ---------- */
  --c-chrome:     #EEE8E8;  /* primary text       [logo 12.7%] */
  --c-mauve:      #C09BB8;  /* muted text         [logo  8.4%] */
  --c-mauve-dim:  #8E7A93;  /* tertiary, mono meta */

  /* ---------- Accent: the bolt. The only accent. ---------- */
  --c-accent:      #F17969; /* coral, bolt midpoint   7.01:1 on ink */
  --c-accent-warm: #F5A65C; /* amber, bolt head       9.58:1 */
  --c-accent-rose: #E7537D; /* rose, bolt body        5.42:1 */
  --c-accent-mag:  #DB4D93; /* magenta, bolt tail     5.02:1 */
  --c-accent-quiet: rgba(241, 121, 105, 0.14);
  --c-accent-edge:  rgba(241, 121, 105, 0.34);
  --c-accent-ring:  rgba(241, 121, 105, 0.10);  /* focus halo on the trace */
  --c-wash-strong:  rgba(219, 77, 147, 0.22);   /* bolt wash, banners + OG */
  --c-wash:         rgba(219, 77, 147, 0.16);   /* bolt wash, CTA band */
  --c-wash-soft:    rgba(219, 77, 147, 0.13);   /* bolt wash, page header */
  --c-wash-faint:   rgba(219, 77, 147, 0.10);   /* bolt wash, trace panel */
  --c-veil:         rgba(18, 12, 28, 0.82);     /* sticky header over content */
  --c-hatch:        rgba(62, 40, 83, 0.28);     /* placeholder hatching */
  --c-todo:         #FFD166;                    /* unresolved legal variable */
  --c-todo-bg:      rgba(255, 209, 102, 0.12);
  --c-verify:       #7FC8F8;                    /* claim needing confirmation */
  --c-verify-bg:    rgba(127, 200, 248, 0.12);

  --grad-bolt: linear-gradient(155deg,
    #F5A65C 0%, #F17969 38%, #E7537D 72%, #DB4D93 100%);
  --grad-bolt-x: linear-gradient(90deg,
    #F5A65C 0%, #F17969 38%, #E7537D 72%, #DB4D93 100%);

  /* ---------- Semantic ---------- */
  --c-ok:      #6FD3A4;
  --c-wait:    #F5A65C;
  --c-focus:   #F5A65C;

  /* ---------- Type families ---------- */
  --font-display: "Bricolage Grotesque", "Bricolage Fallback",
                  Arial, sans-serif;
  --font-body:    "IBM Plex Sans", "Plex Sans Fallback",
                  Arial, sans-serif;
  --font-mono:    "IBM Plex Mono", "Plex Mono Fallback",
                  ui-monospace, "SFMono-Regular", Menlo, monospace;

  /* ---------- Type scale (fluid) ---------- */
  --fs-label: 0.6875rem;                                  /* 11, mono */
  --fs-2xs:   0.75rem;                                    /* 12 */
  --fs-xs:    0.8125rem;                                  /* 13 */
  --fs-sm:    0.875rem;                                   /* 14 */
  --fs-base:  clamp(1rem, 0.973rem + 0.12vw, 1.0625rem);  /* 16 → 17 */
  --fs-lg:    clamp(1.0625rem, 1.01rem + 0.26vw, 1.1875rem);
  --fs-xl:    clamp(1.1875rem, 1.10rem + 0.40vw, 1.375rem);
  --fs-2xl:   clamp(1.375rem, 1.21rem + 0.75vw, 1.75rem);
  --fs-3xl:   clamp(1.75rem, 1.45rem + 1.35vw, 2.5rem);
  --fs-4xl:   clamp(2.125rem, 1.60rem + 2.35vw, 3.375rem);
  --fs-5xl:   clamp(2.5rem, 1.72rem + 3.50vw, 4.25rem);

  --lh-tight:  1.06;
  --lh-snug:   1.2;
  --lh-normal: 1.35;
  --lh-prose:  1.62;
  --lh-legal:  1.78;      /* generous leading for long-form legal */

  --tr-tight: -0.022em;   /* display sizes */
  --tr-snug:  -0.012em;
  --tr-wide:   0.10em;    /* mono labels */

  /* ---------- Spacing ---------- */
  --sp-1:  0.25rem;
  --sp-2:  0.5rem;
  --sp-3:  0.75rem;
  --sp-4:  1rem;
  --sp-5:  1.5rem;
  --sp-6:  2rem;
  --sp-7:  3rem;
  --sp-8:  4rem;
  --sp-9:  6rem;
  --sp-10: 8rem;

  --section-y: clamp(3.5rem, 2.4rem + 5vw, 7rem);

  /* ---------- Radii + the bolt cut ----------
     --cut is the 45deg chamfer. It appears ONLY on instrumented
     surfaces (trace, run cards, matrix, CTA band). Never on
     buttons, inputs, pills or prose. See .is-cut in aisf.css. */
  --r-sm:   8px;
  --r:      14px;
  --r-lg:   20px;
  --r-pill: 999px;
  --cut:    18px;

  /* ---------- Borders ---------- */
  --bd:       1px solid var(--c-line);
  --bd-soft:  1px solid var(--c-line-soft);

  /* ---------- Shadows (plum-tinted, never neutral black) ---------- */
  --sh-sm: 0 1px 2px rgba(6, 3, 12, 0.4);
  --sh:    0 12px 32px rgba(6, 3, 12, 0.45);
  --sh-lg: 0 28px 70px rgba(6, 3, 12, 0.6);
  --sh-accent: 0 10px 34px rgba(219, 77, 147, 0.22);

  /* ---------- Motion ---------- */
  --dur-fast: 120ms;
  --dur:      200ms;
  --dur-slow: 420ms;
  --ease:     cubic-bezier(0.2, 0.7, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  /* ---------- Layout ---------- */
  --container: 1180px;
  --measure:   62ch;
  --measure-legal: 68ch;  /* legal prose runs slightly wider */
  --rail:      8.5rem;   /* instrument rail width */
  /* Header is tokenised so every page, including legal, 404 and /brand/,
     shares one geometry. --header-h stays as the sticky-offset alias. */
  --hdr-h-sm:  72px;
  --hdr-h-lg:  80px;
  --logo-h-sm: 38px;   /* within the 36-40 band */
  --logo-h-lg: 42px;   /* within the 40-44 band */

  /* Split lockup (PROPOSAL, see /brand/). Icon crop + live wordmark. */
  --icon-h-sm:     30px;
  --icon-h-lg:     34px;
  --fs-lockup-sm:  1.0625rem;  /* 17 */
  --fs-lockup-lg:  1.1875rem;  /* 19 */
  --header-h:  var(--hdr-h-sm);

  /* ---------- z-index ---------- */
  --z-base:    1;
  --z-sticky:  10;
  --z-header:  100;
  --z-drawer:  300;
  --z-skip:    400;
}

@media (min-width: 62em) {
  :root { --header-h: var(--hdr-h-lg); }
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --dur-fast: 1ms;
    --dur:      1ms;
    --dur-slow: 1ms;
  }
}