/* ============================================================
   MASTER VORTEX — per-pane built-in sub-panes (pane-subpanes.js)
   The VOLUME / MACD / RSI stack under every multi-chart pane's
   price chart. Namespaced .mc-psub* / .mc-substack so the
   single-chart view is untouched. Loaded after multichart.css.
   ============================================================ */

.mc-substack{
  display:flex; flex-direction:column; flex:0 0 auto;
  border-top:1px solid var(--edge); background:#050a14;
}
.mc-psub{
  position:relative; height:54px; flex:0 0 auto; min-height:0;
  border-top:1px solid rgba(29,44,66,.55);
}
.mc-psub:first-child{border-top:none;}
.mc-psub-chart{position:absolute; inset:0;}
.mc-psub-label{
  position:absolute; top:2px; left:6px; z-index:6;
  font-size:9.5px; font-weight:600; letter-spacing:.8px;
  color:#8fa8c4; pointer-events:none;
}

/* Dense grids: slimmer sub-panes so the price chart keeps room. */
.mc-grid.layout-8 .mc-psub, .mc-grid.layout-16 .mc-psub{height:36px;}
.mc-grid.layout-16 .mc-psub-label{font-size:8.5px;}