/* theme.css — the single source of truth for the printed-paper palette.
 *
 * Every colour lives here as a CSS custom property so the look can be retuned
 * in one place. Tailwind's config (in index.html) maps its colour names to
 * these same hex values, and the Chart.js theme (js/core/chart-theme.js) reads
 * them at runtime via getComputedStyle — so HTML, CSS and canvas all stay in
 * sync from this one file.
 */

:root {
   /* surfaces */
   --paper-bg: #e8e2d2; /* outer board the sheets sit on */
   --paper-bg1: #efe9da;
   --paper: #f6f1e4; /* a sheet of paper */
   --paper-2: #efe9d9; /* recessed / inset paper */

   /* rules & grid */
   --line: #b8ad94; /* ruled ink line / hairline border */
   --line-soft: #d4cab2; /* faint rule */
   --grid: #cabf9f; /* graph-paper grid for charts */
   --grid-soft: #d4cab2; /* dashed plot gridlines */

   /* ink (text) */
   --ink: #26221a; /* body ink — warm near-black */
   --ink-dim: #5a5341; /* secondary ink */
   --ink-faint: #8a8068; /* faint annotation ink */

   /* spot inks (status / series) */
   --open: #1f7a52; /* muted emerald — open */
   --open-dim: #d4e6da; /* pale open wash */
   --closed: #9e3445; /* oxblood — closed */
   --closed-dim: #ecd9d6; /* pale closed wash */
   --unknown: #7c7460; /* grey ink — unknown */
   --unknown-dim: #ded6c2;

   /* per-weekday series inks (Fig. 8), Mon → Sun */
   --wd-mon: #1f7a52;
   --wd-tue: #2f6f7a;
   --wd-wed: #3a5e8c;
   --wd-thu: #6b4ea3;
   --wd-fri: #9e3a7a;
   --wd-sat: #a9762b;
   --wd-sun: #9e3445;

   /* shape */
   --radius-panel: 3px;
}