.channel-merge-panel{margin-top:24px;border-top:1px solid #c9d9ec;padding-top:20px}
#mergeDialog{width:min(1280px,96vw);min-height:min(680px,92dvh);max-height:92dvh;border:1px solid #c9d9ec;border-radius:8px;padding:28px;color:#102e50;background:#f8fbff}
#mergeDialog form{display:flex;flex-direction:column;gap:20px;min-width:0;min-height:min(622px,calc(92dvh - 58px))}
#mergeDialog form>h2{font-size:22px;margin:0 0 4px}
#mergeDialog form>*{min-width:0;overflow-wrap:anywhere}
#mergeDialog input:not([type=checkbox]){width:100%;min-width:0;box-sizing:border-box}
.merge-pickers{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.merge-pickers label{min-width:0}
.merge-pickers select{width:100%;max-width:100%;min-width:0}
.merge-pickers>div{min-width:0}
#mergeSources{max-height:240px;overflow:auto;margin-top:8px;border:1px solid #c9d9ec;border-radius:6px;background:#fff}
#mergeSources .merge-choice{display:flex;flex-direction:row;justify-content:flex-start;align-items:center;gap:10px;padding:10px;margin:0;border-bottom:1px solid #edf2f7;font-weight:500;text-align:left}
.merge-choice input{flex:0 0 auto;width:18px;height:18px}
#mergeDialog .merge-choice input{min-height:18px;margin:0;padding:0;accent-color:#1769d5}
#mergeDialog .merge-pickers{align-items:start}
#mergeDialog details{min-width:0;border:1px solid #bbcee5;border-radius:8px;background:#fff}
#mergeDialog summary{padding:12px;cursor:pointer;font-weight:600;overflow-wrap:anywhere}
#mergeDialog .merge-menu{padding:12px;background:#fff;color:#17385d;border:1px solid #bbcee5;border-radius:8px;box-shadow:0 8px 24px #17385d24}
#mergeDialog .merge-options{max-height:220px;overflow:auto;overscroll-behavior:contain}
#mergeTargets button{display:block;width:100%;text-align:left;border:0;border-radius:4px;background:transparent;overflow-wrap:anywhere;white-space:normal}
#mergeTargets button:hover,#mergeTargets button[aria-pressed=true]{background:#e8f1ff;color:#1257b3}
#mergeDialog .actions{margin:auto 0 0;padding-top:12px}
#mergeDialog #mergeSelection{max-height:100px;overflow:auto;margin:0;font-size:13px}
#mergeDialog .form-error:empty{display:none}
#mergeDialog #mergePreview{align-self:flex-start}
#mergeDialog .merge-picker-done{position:sticky;bottom:0;display:block;margin-top:8px;width:100%;background:#e8f1ff;color:#1257b3;border-color:#bbcee5}
.merge-choice span{min-width:0;overflow-wrap:anywhere}
#mergeSelection,#mergeSummary{font-weight:600;line-height:1.6}
.merge-records{max-height:380px;overflow:auto;border:1px solid #c9d9ec;border-radius:6px}
.merge-records table{min-width:750px;width:100%}
.merge-records th,.merge-records td{padding:8px;text-align:right}
.merge-records th{color:#173753;background:#e8f1fb}
.merge-records th:nth-child(-n+2),.merge-records td:nth-child(-n+2){text-align:left}
.merge-link{display:flex;gap:16px;align-items:center;justify-content:space-between;padding:12px 0;border-bottom:1px solid #c9d9ec}
.merge-link span{min-width:0;overflow-wrap:anywhere}
#mergeWarning{font-weight:700}
@media(max-width:600px){.merge-pickers{grid-template-columns:1fr}#mergeDialog{padding:16px;min-height:0}#mergeDialog form{min-height:0;gap:16px}.merge-link{align-items:flex-start;flex-direction:column}}

/* Keep search/actions outside the only scrolling region in a channel picker. */
.summary-phase .bounded-menu.list-menu{
  display:flex;flex-direction:column;gap:10px;overflow:hidden;
  padding:12px;isolation:isolate;border:1px solid #b8cdeb;border-radius:8px;
  background:linear-gradient(150deg,#fff 45%,#f2f6ff);color:#17385d;
  box-shadow:0 10px 26px #17385d24;
}
.summary-phase .bounded-menu.list-menu> :not(.picker-scroll){flex-shrink:0;margin:0}
.summary-phase .bounded-menu.list-menu .picker-scroll{
  flex:0 1 auto;min-height:0;max-height:280px;overflow-x:hidden;overflow-y:auto;
  overscroll-behavior:contain;scrollbar-gutter:stable;scrollbar-width:thin;
  scrollbar-color:#95adcc #eef3fa;padding:4px;margin:0;
  border:1px solid #dce6f3;border-radius:6px;background:#fff;
}
.summary-phase .bounded-menu.list-menu .picker-scroll label{
  display:flex;flex-direction:row;align-items:flex-start;gap:10px;min-height:38px;
  width:100%;padding:9px 8px;margin:0 0 2px;line-height:20px;
  font-size:13px;font-weight:500;text-align:left;overflow-wrap:anywhere;
}
.summary-phase .bounded-menu.list-menu .picker-scroll input[type=checkbox]{
  width:16px;height:16px;min-height:16px;flex:0 0 16px;margin:2px 0 0;padding:0;accent-color:#155bb3;
}
.summary-phase .bounded-menu.list-menu .picker-scroll label:has(input:checked){background:#edf4ff;border-radius:4px}
.summary-phase .bounded-menu.list-menu .picker-scroll label:hover{background:#e8f1ff}
.summary-phase .bounded-menu.list-menu .picker-scroll span{min-width:0;white-space:normal;overflow-wrap:anywhere}
.summary-phase .bounded-menu.list-menu input[type=search]{min-width:0;width:100%;height:40px;min-height:40px;padding:8px 10px;font-size:13px;border:1px solid #b8cdeb;border-radius:6px;background:#fff;color:#17385d}
.summary-phase .bounded-menu.list-menu .picker-actions{display:flex;gap:8px}
.summary-phase .bounded-menu.list-menu .picker-actions button{flex:1;min-width:0;height:34px;min-height:34px;padding:6px 10px;font-size:12px;background:#edf4ff;border-color:#c7d9ef;color:#204d83;box-shadow:none}
#mergeDialog .list-menu .merge-picker-done{position:static;margin:0;min-height:34px;height:34px;padding:6px 10px}