/* Multi-stream stage + the picker chip, its dropdown, and the Go live
   modal. Tokens come from style.css :root and panel.css. */

/* ---------- Stage ---------- */
#stage{position:absolute;inset:0;display:grid;gap:4px;grid-template-columns:1fr;grid-auto-rows:1fr;}
#stage[data-count="2"]{grid-template-columns:1fr 1fr;}
#stage[data-count="3"],#stage[data-count="4"]{grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr;}
@media (max-width:860px){ #stage[data-count="2"]{grid-template-columns:1fr;grid-template-rows:1fr 1fr;} }
.tile{position:relative;background:#000;min-width:0;min-height:0;overflow:hidden;}
.tile video{width:100%;height:100%;display:block;object-fit:contain;}
.tile-label{
  position:absolute;top:10px;left:12px;z-index:2;pointer-events:none;
  padding:3px 9px;border-radius:999px;background:rgba(0,0,0,.6);
  font-family:var(--font-mono);font-size:var(--fs-2xs);letter-spacing:.12em;
  text-transform:uppercase;color:#fff;
}
#stage[data-count="1"] .tile-label{opacity:.65;}

/* ---------- Header chip ---------- */
.mv-chip{
  display:inline-flex;align-items:center;gap:7px;flex-shrink:0;
  max-width:160px;min-height:var(--p-ctrl);padding:0 8px;
  background:var(--surface2);border:1px solid var(--border);border-radius:var(--p-r-sm);
  color:var(--text);cursor:pointer;
  font-family:var(--font-mono);font-size:var(--fs-xs);font-weight:600;
  transition:background .14s,border-color .14s;
}
.mv-chip:hover,.mv-chip.open{background:var(--p-hover);border-color:var(--border-lt);}
.mv-chip:focus-visible{outline:none;box-shadow:var(--p-ring);}
.mv-chip svg{width:14px;height:14px;flex-shrink:0;opacity:.6;}
.mv-chip-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.mv-chip-dot{width:7px;height:7px;border-radius:50%;background:var(--text-sub);flex-shrink:0;}
.mv-chip.live .mv-chip-dot{background:var(--live);box-shadow:0 0 0 3px rgba(61,220,132,.18);}

/* ---------- Picker dropdown ---------- */
#mv-menu{
  position:fixed;z-index:1000;width:min(280px,calc(100vw - 24px));padding:5px;
  background:var(--surface2);border:1px solid var(--border-lt);border-radius:var(--p-r);
  box-shadow:0 12px 32px rgba(0,0,0,.55);
}
#mv-menu[hidden]{display:none;}
.mv-list{display:flex;flex-direction:column;gap:2px;}
.mv-row.on{background:rgba(224,168,46,.1);}
.mv-pick{
  flex:1;min-width:0;display:flex;align-items:center;gap:8px;
  padding:9px 10px;border:none;border-radius:var(--p-r-sm);
  background:none;color:var(--text);text-align:left;cursor:pointer;
  font-family:var(--font-sans);font-size:var(--fs-xs);
  transition:background .14s;
}
.mv-pick:hover{background:var(--p-hover);}
.mv-dot{width:7px;height:7px;border-radius:50%;background:var(--live);flex-shrink:0;}
.mv-name{flex:1;min-width:0;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.mv-row.on .mv-name{color:var(--brass-lt);}
.mv-meta{font-family:var(--font-mono);font-size:var(--fs-2xs);color:var(--text-sub);white-space:nowrap;}
.mv-add{
  display:flex;align-items:center;justify-content:center;width:34px;flex-shrink:0;
  background:none;border:none;border-radius:var(--p-r-sm);
  color:var(--text-sub);cursor:pointer;transition:background .14s,color .14s;
}
.mv-add svg{width:16px;height:16px;}
.mv-add:hover:not(:disabled){background:var(--p-hover);color:var(--text);}
.mv-add.on{color:var(--brass-lt);}
.mv-add:disabled{opacity:.35;cursor:default;}
.mv-empty,.mv-hint{padding:9px 10px;font-size:var(--fs-2xs);color:var(--text-sub);line-height:1.5;}
.mv-hint{border-top:1px solid var(--border);margin-top:3px;}

/* ---------- Go live modal ---------- */
#mv-modal{position:fixed;inset:0;z-index:1000;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,.6);}
#mv-modal[hidden]{display:none;}
.mv-panel{
  width:min(520px,94vw);max-height:86vh;overflow:auto;padding:14px 16px;
  background:var(--surface);border:1px solid var(--border-lt);border-radius:var(--p-r);
  box-shadow:0 20px 50px rgba(0,0,0,.6);color:var(--text);
}
.mv-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;}
.mv-head-title{font-family:var(--font-mono);font-size:var(--fs-md);font-weight:600;letter-spacing:.12em;text-transform:uppercase;}
.mv-section{margin-top:16px;padding-top:12px;border-top:1px solid var(--border);}
.mv-section-title{font-family:var(--font-mono);font-size:var(--fs-xs);letter-spacing:.12em;text-transform:uppercase;color:var(--brass-lt);}
.mv-note{font-size:var(--fs-xs);color:var(--text-dim);line-height:1.5;margin:6px 0;}
.mv-field{margin-top:9px;}
.mv-label{font-size:var(--fs-2xs);color:var(--text-sub);margin-bottom:4px;}
.mv-line{display:flex;gap:6px;}
.mv-line input{
  flex:1;min-width:0;padding:7px 9px;border-radius:var(--p-r-sm);
  background:var(--surface2);border:1px solid var(--border);color:var(--text);
  font-family:var(--font-mono);font-size:var(--fs-2xs);outline:none;
}
.mv-line input:focus{border-color:var(--brass-dk);}
.mv-mini{
  padding:0 10px;border-radius:var(--p-r-sm);cursor:pointer;
  background:var(--surface2);border:1px solid var(--border);color:var(--text-dim);
  font-family:var(--font-mono);font-size:var(--fs-2xs);letter-spacing:.08em;
  transition:background .14s,border-color .14s,color .14s;
}
.mv-mini:hover{background:var(--p-hover);border-color:var(--border-lt);color:var(--text);}
.mv-rules{margin:8px 0 0 18px;font-size:var(--fs-xs);color:var(--text-dim);line-height:1.7;}
.mv-regen{margin-top:16px;}

/* Selected but no longer live — kept in the list purely so it can be
   removed, so the name is dimmed and only the ✕ is actionable. */
.mv-row.mv-off .mv-dot{background:var(--text-sub);}
.mv-row.mv-off .mv-name{color:var(--text-dim);font-weight:500;}
.mv-row.mv-off .mv-pick{cursor:default;}
.mv-row.mv-off .mv-pick:hover{background:none;}
.mv-row.mv-off .mv-add{color:var(--text-dim);}
.mv-row.mv-off .mv-add:hover:not(:disabled){color:var(--accent-lt);}

/* Row layout, pinned: the name flexes and ellipsises, the meta and the
   action button keep their size, and nothing wraps to a second line. */
.mv-row{display:flex;flex-wrap:nowrap;align-items:center;gap:2px;width:100%;border-radius:var(--p-r-sm);}
.mv-row .mv-pick{flex:1 1 auto;min-width:0;display:flex;align-items:center;gap:9px;}
.mv-row .mv-name{flex:1 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.mv-row .mv-meta{flex:0 0 auto;white-space:nowrap;}
.mv-row .mv-add{flex:0 0 34px;align-self:stretch;min-height:34px;}
.mv-row .mv-dot{flex:0 0 7px;}