.compare-layout {
  margin-top: 16px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 16px;
  align-items: stretch;
}

.compare-grid-panel,
.article-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  border-radius: 12px;
  padding: 16px;
  min-height: 60vh;
  display: flex;
  flex-direction: column;
}

.run-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 8px 0 12px;
  font-size: 0.78rem;
}

.run-chip {
  padding: 2px 8px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--paper);
  color: var(--ink);
  white-space: nowrap;
}

.run-chip strong {
  color: var(--accent);
}

.compare-grid-wrap {
  flex: 1;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--paper);
  position: relative;
}

.compare-placeholder {
  padding: 16px;
  color: var(--muted);
}

.compare-grid {
  border-collapse: separate;
  border-spacing: 0;
  width: 100%;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.72rem;
}

.compare-grid thead th {
  position: sticky;
  top: 0;
  z-index: 3;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  padding: 6px 4px;
  text-align: center;
  white-space: nowrap;
}

.compare-grid th.run-head {
  font-size: 0.68rem;
  min-width: 64px;
}

.compare-grid th.run-head .thinking {
  color: var(--muted);
  font-weight: 400;
}

.compare-grid th.run-head .count {
  color: var(--accent);
  font-weight: 700;
}

.compare-grid th.locator,
.compare-grid td.locator {
  position: sticky;
  left: 0;
  z-index: 2;
  background: var(--panel);
  border-right: 1px solid var(--border);
  text-align: right;
  padding: 2px 6px;
  color: var(--muted);
  white-space: nowrap;
}

.compare-grid th.text,
.compare-grid td.text {
  position: sticky;
  left: 80px;
  z-index: 2;
  background: var(--panel);
  border-right: 1px solid var(--border);
  padding: 2px 8px;
  max-width: 360px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-family: "Spectral", serif;
  font-size: 0.85rem;
}

.compare-grid th.gutter,
.compare-grid td.gutter {
  position: sticky;
  left: 440px;
  z-index: 2;
  background: var(--panel);
  border-right: 1px solid var(--border);
  text-align: center;
  padding: 2px 6px;
  color: var(--muted);
  font-size: 0.7rem;
  white-space: nowrap;
}

.compare-grid td.gutter.unanimous {
  color: var(--accent);
  font-weight: 700;
}

.compare-grid td.gutter.lonely {
  color: #b34a28;
  font-weight: 700;
}

.compare-grid td.run-cell {
  text-align: center;
  padding: 2px 4px;
  border-right: 1px solid rgba(0, 0, 0, 0.04);
  cursor: pointer;
  font-size: 0.7rem;
  font-feature-settings: "tnum" 1;
}

.compare-grid td.run-cell.boundary {
  border-top: 3px solid var(--ink);
}

.compare-grid tr.column-break td {
  border-top: 2px dashed var(--border);
}

.compare-grid tr.row-hover td {
  background: rgba(163, 74, 40, 0.06);
}

.compare-grid td.run-cell.selected {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.page-tab-group .page-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.page-tabs button {
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 10px;
  cursor: pointer;
  font: inherit;
}

.page-tabs button.active {
  background: var(--accent);
  color: var(--panel);
  border-color: var(--accent);
}

.article-panel .article-meta {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 8px;
}

.article-panel .article-body {
  flex: 1;
  overflow: auto;
  font-family: "Spectral", serif;
  line-height: 1.5;
  white-space: pre-wrap;
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  min-height: 200px;
}

.article-panel .article-title {
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 8px;
  color: var(--ink);
}

@media (max-width: 1100px) {
  .compare-layout {
    grid-template-columns: 1fr;
  }
}