:root{
  /* ---- Base palette. Two grounds: FORGE (dark) and INK (parchment). ---- */
  /* Forge ground */
  --forge-obsidian:#0E0F14;
  --forge-indigo:#171A26;
  --forge-indigo-raised:#1E2233;
  --forge-indigo-sunken:#111420;

  /* Metals. Brass = structural. Gold = ornamental. Never interchange. */
  --metal-brass:#B08D4F;
  --metal-brass-dim:#6E5931;
  --metal-brass-bright:#C7A467;
  --metal-gold:#D4A24C;
  --metal-gold-dim:#8A6A31;

  /* Interactive. Crimson is ONLY legal on forge (dark) grounds. */
  --forge-crimson:#A81D2D;
  --forge-crimson-hover:#C02434;
  --forge-crimson-press:#8A1523;

  /* Ink ground (parchment zone) */
  --ink-parchment:#EFE3CC;
  --ink-parchment-deep:#E3D3B6;
  --ink-parchment-raised:#F6EEDD;
  --ink-lampblack:#1B1712;
  --ink-lampblack-soft:#4A4137;

  /* Pigments. Illustration only. Vermillion is ONLY legal on ink grounds. */
  --ink-vermillion:#C8452B;
  --ink-lapis:#2E4B8F;
  --ink-amber:#D9922F;

  /* Text on forge */
  --forge-text-hi:#F2ECE0;
  --forge-text:#CFC7B8;
  --forge-text-dim:#9A9284;
  --forge-text-faint:#6B6558;

  /* ---- Semantic aliases ---- */
  --page-bg:var(--forge-obsidian);
  --surface-card:var(--forge-indigo);
  --surface-raised:var(--forge-indigo-raised);
  --surface-sunken:var(--forge-indigo-sunken);
  --surface-inset:var(--ink-parchment);

  --text-body:var(--forge-text);
  --text-heading:var(--forge-text-hi);
  --text-muted:var(--forge-text-dim);
  --text-on-ink:var(--ink-lampblack);
  --text-on-ink-muted:var(--ink-lampblack-soft);
  --text-on-crimson:#F6EDE2;

  /* Prata display type. Parchment on dark, never pure white. */
  --text-display-dark:var(--ink-parchment);
  --text-display-ink:var(--ink-lampblack);

  --rule-hairline:var(--metal-brass-dim);
  --rule-structural:var(--metal-brass);
  --rule-on-ink:var(--ink-lampblack);

  --ornament:var(--metal-gold);
  --ornament-dim:var(--metal-gold-dim);
  --ornament-on-ink:var(--ink-vermillion);

  --action-bg:var(--forge-crimson);
  --action-bg-hover:var(--forge-crimson-hover);
  --action-bg-press:var(--forge-crimson-press);
  --action-fg:var(--text-on-crimson);
  --link:var(--forge-crimson-hover);
  --link-hover:var(--metal-gold);

  /* Ink-zone action: crimson is forbidden here; amber/lampblack instead. */
  --action-ink-bg:var(--ink-lampblack);
  --action-ink-fg:var(--ink-parchment-raised);
  --action-ink-accent:var(--ink-amber);

  --focus-ring:var(--metal-gold);
  --danger:var(--ink-vermillion);
  --success:#4E7A4A;
  --warning:var(--ink-amber);
}