/* ============================================================
   Bagpipe Underground -- Data Visualization Color Palette
   ============================================================
   Shared CSS variables for chart fills used by Surveys & Data
   pieces. The editorial palette (--green-dark, --gold, etc.)
   stays per-page in each HTML file's inline <style> block;
   this file is for the chart-fill variants only.

   Naming is by Highland-feeling role (emerald, forest, saffron,
   etc.) rather than by data point so they map cleanly to
   whatever story a given chart is telling. The values are
   brighter, more saturated variants of the editorial palette,
   tuned to read as distinct chart segments at small sizes
   (down to ~130px for the stories.html card-pie thumbnail).

   Pages that need data viz colors should:
     <link href="Assets/css/data-viz.css" rel="stylesheet">
   from the head, then reference vars via var(--data-emerald),
   var(--data-saffron), etc.

   First externalized May 2026 (twentieth session) so
   essay-pipe-band-dynasty-arc.html and the stories.html dynasty
   card pie thumbnail stop duplicating the same hex values.
   Future Surveys & Data pieces inherit automatically.
============================================================ */

:root {
  --data-emerald: #1f5d3d;   /* deep saturated Highland green */
  --data-forest:  #3a8c5e;   /* bright field green */
  --data-saffron: #d99410;   /* rich Celtic gold */
  --data-amber:   #f0c84a;   /* bright amber gold */
  --data-heather: #7a4eb8;   /* royal heather purple */
  --data-loch:    #2a6cb0;   /* saturated loch blue */
  --data-tartan:  #c83838;   /* tartan red */
  --data-stone:   #b0a89a;   /* warm neutral stone */
}