.layout-shell { grid-template-rows: auto auto 1fr; }

.top-tabs {
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}

.top-tabs-inner {
  display: flex;
  gap: 6px;
  padding: 10px 16px;
  min-width: max-content;
}

.top-tabs .pill { flex-shrink: 0; }

.layout-top-tabs {
  display: grid;
  grid-template-columns: 280px 1fr 290px;
}

.editor-block { display: flex; flex-direction: column; flex: 1; gap: 8px; }
.editor-block .editor-mock { flex: 1; }