:root{
/* ── Core palette (Brand book p.010) ───────────────────────────── */
--trac-black:#111111;
--trac-white:#FAFAFA;
--trac-ink:#000000;          /* pure black, used for running body copy */
--trac-paper:#FFFFFF;        /* page stock behind every spread */

/* ── Brand palette (Brand book p.011) ──────────────────────────── */
--trac-blue:#1131EF;         /* "L-Blue" — the logo dot + "91" */
--trac-blue-alt:#3D7EFF;     /* "D-Blue" */

/* ── Secondary / spectral palette (Brand book p.012) ───────────── */
--trac-spectrum-1:#FF0000;
--trac-spectrum-2:#FF7F00;
--trac-spectrum-3:#FDFF00;
--trac-spectrum-4:#7FFF00;
--trac-spectrum-5:#00FF00;
--trac-spectrum-6:#00FF7F;
--trac-spectrum-7:#0080FF;
--trac-spectrum-8:#0000FF;
--trac-spectrum-9:#FF00FF;
--trac-spectrum-10:#FF007F;

/* ── Document furniture ────────────────────────────────────────── */
--trac-rule:#A2A2A2;          /* every hairline in the book */
--trac-ghost:#E5E5E5;         /* 70% ghosted logo behind clearspace diagrams */
--trac-ghost-warm:#EDEDED;    /* ghosted mark on partnership spreads */
--trac-guide-band:#FFCECE;    /* pink clearspace bands */
--trac-guide-line:#FF0000;    /* red dashed measure lines + "don't" crosses */

/* ── Cover / applications gradient set ─────────────────────────── */
--trac-cover-from:#8F94FB;
--trac-cover-to:#4E54C8;
--trac-cover-blob-a:#1131EF;
--trac-cover-blob-b:#6202EE;
--trac-cover-blob-c:#3D7EFF;
--trac-app-blob-a:#F96AA4;
--trac-app-blob-b:#B2A5DC;
--trac-app-blob-c:#3D7EFF;
--trac-app-blob-a-deep:#E45494;
--trac-app-blob-b-deep:#413695;
--trac-app-blob-c-deep:#3D3492;

/* ── Relay neutrals (2026) ─────────────────────────────────────────
   A cool graphite ramp the 2022 book never defined. Dense shipment
   tables need somewhere to live between #111111 and #FFFFFF. */
--relay-ink:#101323;
--relay-graphite:#4A5069;
--relay-mist:#E4E6EF;
--relay-fog:#F6F7FB;

/* ── Relay blue steps ──────────────────────────────────────────── */
--relay-press:#0A1FA8;        /* pressed / on-accent text */
--relay-blue-soft:#E7ECFE;    /* accent chip + selected nav ground */

/* ── Status ────────────────────────────────────────────────────── */
--status-transit-fg:#0A1FA8;      --status-transit-bg:#E7ECFE;
--status-exception-fg:#9A5B00;    --status-exception-bg:#FEF0DC;
--status-exception-dot:#E08700;
--status-delivered-fg:#03543F;    --status-delivered-bg:#DEF7EC;
--status-delivered-dot:#0E9F6E;
--status-failed-fg:#8C1D18;       --status-failed-bg:#FCE9E7;

/* ── Semantic aliases ──────────────────────────────────────────── */
--text-primary:var(--trac-black);
--text-body:var(--trac-ink);
--text-inverse:var(--trac-white);
--text-accent:var(--trac-blue);
--surface-page:var(--trac-paper);
--surface-inverse:var(--trac-black);
--surface-soft:var(--trac-white);
--surface-accent:var(--trac-blue);
--surface-accent-alt:var(--trac-blue-alt);
--border-hairline:var(--trac-rule);
--accent:var(--trac-blue);
--link:var(--trac-blue);
--link-hover:var(--trac-blue-alt);
--focus-ring:var(--trac-blue);

/* Product surfaces — the brand book is paper, the app is Relay */
--surface-app:#FFFFFF;
--surface-raised:var(--relay-fog);
--border-subtle:var(--relay-mist);
--text-muted:#6B7189;
--accent-press:var(--relay-press);
--accent-soft:var(--relay-blue-soft);
--on-accent:#FFFFFF;
--on-accent-soft:var(--relay-press);
}
/* Inverse spreads: black panel, off-white type (Brand book p.005, p.014) */
[data-theme="inverse"]{
--surface-app:var(--relay-ink);
--surface-raised:#191D31;
--border-subtle:#2A2F45;
--text-muted:#8B90A6;
--accent-soft:#1A1F3D;
--on-accent-soft:#8FA8FF;
--text-primary:var(--trac-white);
--text-body:var(--trac-white);
--text-inverse:var(--trac-black);
--surface-page:var(--trac-black);
--surface-inverse:var(--trac-white);
--border-hairline:var(--trac-rule);
--link:var(--trac-blue-alt);
--link-hover:var(--trac-white);
}
a{color:var(--link);text-decoration-thickness:1px;text-underline-offset:.18em}
a:hover{color:var(--link-hover)}