/* ============================================================
   chart.css — Shared chart frame styling.
   Plotly inherits dark-theme via the baseLayout() helper in
   js/render.js; this file only handles the host card.
   ============================================================ */

.chart {
  width: 100%;
  height: 480px;
}
.chart--sm { height: 380px; }
.chart--lg { height: 640px; }