/* ============================================================
   Via Nutria — Colours
   Four charte-de-marque colours: Bordeau, Lin, Framboise, Olive.
   Tints/shades derived in oklch to stay in the warm brand family.
   ============================================================ */
:root{
  /* --- Core brand (exact charte values) --- */
  --bordeau:#451f2e;      /* primary — deep plum/burgundy */
  --lin:#f5f1e9;          /* warm off-white linen ground  */
  --framboise:#cc273c;    /* raspberry — action / accent  */
  --olive:#666342;        /* olive — calm secondary       */

  /* --- Bordeau ramp --- */
  --bordeau-900:#2b131d;
  --bordeau-800:#371825;
  --bordeau-700:#451f2e;  /* = --bordeau */
  --bordeau-600:#5c2c3f;
  --bordeau-500:#743a51;
  --bordeau-400:#9a6072;
  --bordeau-300:#c19aa6;
  --bordeau-200:#e0cbd2;
  --bordeau-100:#f0e5e9;

  /* --- Lin / warm neutral ramp --- */
  --lin-0:#ffffff;
  --lin-50:#faf8f3;
  --lin-100:#f5f1e9;      /* = --lin */
  --lin-200:#ece6da;
  --lin-300:#ddd4c3;
  --lin-400:#c3b7a0;
  --lin-500:#9d8f78;
  --lin-600:#6f6455;      /* warm grey for muted text */
  --lin-700:#4b433a;

  /* --- Framboise ramp --- */
  --framboise-700:#9c1c2d;
  --framboise-600:#b52133;
  --framboise-500:#cc273c; /* = --framboise */
  --framboise-400:#dc4f60;
  --framboise-300:#e98795;
  --framboise-200:#f4c2c9;
  --framboise-100:#fbe6e9;

  /* --- Olive ramp --- */
  --olive-700:#4c4a30;
  --olive-600:#5a5739;
  --olive-500:#666342;    /* = --olive */
  --olive-400:#8b875f;
  --olive-300:#b3af8c;
  --olive-200:#d7d4bf;
  --olive-100:#eeecdf;
  --olive-50:#f2f1e7;

  /* ---------------- Semantic aliases ---------------- */
  --surface-page:var(--lin-100);       /* default warm ground */
  --surface-page-alt:var(--lin-50);
  --surface-card:var(--lin-0);
  --surface-inverse:var(--bordeau-700);
  --surface-sunken:var(--lin-200);
  --surface-accent:var(--framboise-500);
  --surface-accent-soft:var(--framboise-100);
  --surface-calm:var(--olive-50);

  --text-strong:var(--bordeau-700);    /* headings on light */
  --text-body:#3a2530;                 /* body copy on light */
  --text-muted:var(--lin-600);
  --text-on-dark:var(--lin-100);
  --text-on-dark-muted:var(--bordeau-300);
  --text-accent:var(--framboise-600);
  --text-link:var(--framboise-600);

  --border-subtle:var(--lin-300);
  --border-default:var(--lin-400);
  --border-strong:var(--bordeau-700);
  --border-on-dark:rgba(245,241,233,.22);

  --focus-ring:var(--framboise-500);

  /* States */
  --success:var(--olive-500);
  --success-soft:var(--olive-50);
  --danger:var(--framboise-600);
  --danger-soft:var(--framboise-100);
}