/* The thermal ramp.

   SCOPE CHANGED 2026-08-25. This was the whole visual identity. It is now RETIRED
   FROM BRAND AND MARKETING USE at the client's direction — no gradient mark, no
   gradient-clipped headings, no gradient bars, no gradient bullets. Indigo→magenta
   →red reads as instrumentation, and she asked for warm and spa-like.

   It survives for exactly one job: painting illustrative thermograms, where it is
   the honest colour scale of the instrument rather than a decorative choice. Those
   images still carry an "Illustrative" tag.

   Indigo → magenta → red → orange → gold. Never a page or section background. */
:root{
  --t1:#2C2A6B; /* coolest */
  --t2:#7A2C86;
  --t3:#C0316B;
  --t4:#FF5A4D;
  --t5:#FF8A3D;
  --t6:#FFC24B; /* warmest */

  /* imagery only — see the scope note above */
  --thermal:linear-gradient(115deg,var(--t1),var(--t2) 28%,var(--t3) 48%,var(--t4) 66%,var(--t5) 82%,var(--t6));
  --thermal-bar:linear-gradient(90deg,var(--t1),var(--t3) 35%,var(--t5) 70%,var(--t6));

  /* canvas paint ramp (rgb triplets, coolest→hottest) — see ThermalField */
  --thermal-ramp-1:192,49,107; /* @kind other */
  --thermal-ramp-2:255,90,77; /* @kind other */
  --thermal-ramp-3:255,138,61; /* @kind other */
  --thermal-ramp-4:255,194,75; /* @kind other */
  --thermal-ramp-5:255,243,196; /* @kind other */

  /* the cool plate every thermogram is painted onto */
  --plate-cool-a:#081029;
  --plate-cool-b:#0D1F38;
  --plate-mask:#101A44;
}