/* SkyFireArt — Spiral Aurora background. Pools tinted per page from the works on it. */
html { background:#FBFAF8; }
body {
  background:transparent;
  --sfa-1:#C9A227;
  --sfa-2:#2B6B6B;
  --sfa-3:#582668;
  --sfa-op:.28;
}
body::before{
  content:""; position:fixed; inset:-20%; z-index:-1; pointer-events:none;
  opacity:var(--sfa-op);
  background:
    radial-gradient(44% 48% at 20% 28%, var(--sfa-1) 0%, rgba(255,255,255,0) 70%),
    radial-gradient(40% 46% at 80% 22%, var(--sfa-2) 0%, rgba(255,255,255,0) 70%),
    radial-gradient(52% 52% at 58% 86%, var(--sfa-3) 0%, rgba(255,255,255,0) 70%);
  animation: sfa-drift 42s ease-in-out infinite alternate;
}
@keyframes sfa-drift{
  from{ transform:translate3d(-2%,-1%,0) scale(1); }
  to  { transform:translate3d(3%,2%,0) scale(1.08); }
}
@media (prefers-reduced-motion: reduce){ body::before{ animation:none; } }

/* per-page palettes, sampled from the artwork on each page */
body:has(#allrecords[data-tilda-page-alias="abstractart"]){--sfa-1:#3483B2;--sfa-2:#B28334;--sfa-3:#2F6B4A;--sfa-op:.30}
body:has(#allrecords[data-tilda-page-alias="small-artworks"]){--sfa-1:#B25E34;--sfa-2:#34AAB2;--sfa-3:#90B234;--sfa-op:.28}
body:has(#allrecords[data-tilda-page-alias="roerichjcopies"]){--sfa-1:#3466B2;--sfa-2:#34B28E;--sfa-3:#B24334;--sfa-op:.30}
body:has(#allrecords[data-tilda-page-alias="religiousart"]){--sfa-1:#B28134;--sfa-2:#7E8F3A;--sfa-3:#34A0A4;--sfa-op:.28}
body:has(#allrecords[data-tilda-page-alias="oilacryl"]){--sfa-1:#6CB234;--sfa-2:#B2343F;--sfa-3:#34A1B2;--sfa-op:.26}
body:has(#allrecords[data-tilda-page-alias="watercolor"]){--sfa-1:#34B2A1;--sfa-2:#B27E34;--sfa-3:#86B234;--sfa-op:.26}
body:has(#allrecords[data-tilda-page-alias="silk"]){--sfa-1:#B28634;--sfa-2:#34B2A1;--sfa-3:#6AB234;--sfa-op:.28}
body:has(#allrecords[data-tilda-page-alias="fluidart"]){--sfa-1:#34B2A1;--sfa-2:#B2A634;--sfa-3:#B23934;--sfa-op:.28}
body:has(#allrecords[data-tilda-page-alias="calligraphyornament"]){--sfa-1:#B23A34;--sfa-2:#34B2A1;--sfa-3:#343DB2;--sfa-op:.26}
body:has(#allrecords[data-tilda-page-alias="icons"]){--sfa-1:#B27B34;--sfa-2:#A8452F;--sfa-3:#5A2A55;--sfa-op:.26}
/* monochrome media — graphite and sepia, kept faint */
body:has(#allrecords[data-tilda-page-alias="pencil"]){--sfa-1:#6B6E78;--sfa-2:#8A7F6E;--sfa-3:#4A4F5A;--sfa-op:.16}
body:has(#allrecords[data-tilda-page-alias="ink"]){--sfa-1:#7A6A55;--sfa-2:#5A6470;--sfa-3:#3E4650;--sfa-op:.16}