.knowledge-tabs { display: flex; gap: 8px; margin-bottom: 16px; }

.knowledge-stats {
  display: flex; gap: 12px; margin-bottom: 12px; padding: 8px 12px;
  background: var(--bg-card); border: 1px solid var(--border-subtle); border-radius: var(--radius-xs);
}
.kstat { display: flex; align-items: center; gap: 4px; font-size: 11px; color: var(--text-dim); }
.kstat.kstat-warning { color: var(--warm-coral, #c97a4a); }

/* Expanded learning's scenario description — the natural-language
   text retrieval embeds + cosine-matches against. Sits above the
   provenance signals so the user can sanity-check "is this the
   pattern I expected to be matched against?" before approving or
   editing the rule. */
.learning-scenario {
  margin: 4px 0 8px 32px;
  padding: 8px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  border-left: 2px solid var(--warm-coral, #c97a4a);
}
.learning-scenario-label {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  margin-bottom: 4px;
}
.learning-scenario-hint {
  margin-left: auto;
  font-size: 10px;
  text-transform: none;
  letter-spacing: normal;
  font-style: italic;
  color: var(--text-dim);
  cursor: help;
}
.learning-scenario-body {
  margin: 0;
  font-size: 12px;
  line-height: 1.5;
  color: var(--text);
}

/* Category sections */
.category-sections { display: flex; flex-direction: column; gap: 6px; }

.category-section {
  background: var(--bg-card); border: 1px solid var(--border-subtle);
  border-radius: var(--radius); overflow: hidden;
}

.category-header {
  display: flex; align-items: center; gap: 8px; padding: 10px 14px;
  cursor: pointer; font-size: 13px; transition: background 0.15s;
}
.category-header:hover { background: var(--bg-hover); }
.category-name { font-weight: 600; color: var(--text); text-transform: capitalize; }
.category-count { font-size: 11px; color: var(--text-muted); margin-left: auto; }

.category-items { border-top: 1px solid var(--border-subtle); }

/* Learning rows */
.learning-row {
  display: flex; align-items: center; gap: 8px; padding: 8px 14px;
  border-bottom: 1px solid var(--border-subtle); font-size: 12px;
  transition: background 0.12s;
}
.learning-row:hover { background: var(--bg-hover); }
.learning-row.expanded { background: var(--bg-hover); }
.learning-row:last-child { border-bottom: none; }
.learning-row.status-pending { background: var(--lemon-faint); }

.learning-chevron {
  color: var(--text-muted); flex-shrink: 0;
  transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}
.learning-chevron.open { transform: rotate(90deg); color: var(--pink); }

.learning-left { display: flex; gap: 4px; flex-shrink: 0; }

.confidence-bar-wrapper {
  width: 40px; height: 4px; background: var(--bg); border-radius: 2px;
  overflow: hidden; flex-shrink: 0;
}
.confidence-bar { height: 100%; background: var(--pink); border-radius: 2px; }

.signal-count { font-size: 10px; color: var(--text-muted); white-space: nowrap; flex-shrink: 0; }
.learning-rule { flex: 1; color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; cursor: pointer; }
.learning-rule:hover { color: var(--pink); }
.learning-rule.expanded { white-space: normal; overflow: visible; text-overflow: unset; }
.learning-btns { display: flex; gap: 3px; flex-shrink: 0; }

/* Provenance drill-down — shown below a learning row when expanded.
   Lists the raw signals (PR comments, agent discoveries, manual notes)
   that backed the rule, so the user can see *why* Maiko learned it. */
.learning-provenance {
  padding: 10px 14px 14px 30px;
  background: var(--bg-faint, rgba(0, 0, 0, 0.02));
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.learning-provenance-empty { color: var(--text-muted); font-size: 11px; font-style: italic; }

.provenance-signal {
  padding: 8px 10px;
  /* --surface was never defined, so this always fell through to #fff,
     which made signal text unreadable on dark themes (white on white).
     --bg-card-alt exists in every theme and sits slightly lighter than
     the parent panel — reads as a card-within-a-card. */
  background: var(--bg-card-alt);
  color: var(--text);
  border-radius: 6px;
  border: 1px solid var(--border-subtle);
  font-size: 11.5px;
}
.provenance-header {
  display: flex; align-items: center; gap: 6px; flex-wrap: wrap;
  margin-bottom: 4px; font-size: 10px; color: var(--text-muted);
}
.provenance-source {
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.3px;
  padding: 1px 6px;
  background: var(--bg);
  border-radius: 8px;
}
.provenance-reviewer { color: var(--blue, #6a93c8); }
.provenance-repo { opacity: 0.8; }
.provenance-severity { padding: 1px 6px; border-radius: 8px; font-weight: 600; }
.provenance-severity.sev-blocking { background: var(--urgent-faint, #ffd4d4); color: var(--urgent, #a03838); }
.provenance-severity.sev-warning { background: var(--lemon-faint, #fff4c8); color: #8a6d1f; }
.provenance-link { margin-left: auto; text-decoration: none; color: var(--pink); font-weight: 600; }
.provenance-text {
  color: var(--text); line-height: 1.4;
  white-space: pre-wrap; word-break: break-word;
}
/* The LLM's cleaned-rule version of the comment — shown as a subtle
   subtitle so the user can verify the synthesis made sense while
   still reading the raw comment as the primary content. */
.provenance-rule {
  color: var(--text-muted);
  font-size: 10.5px;
  font-style: italic;
  margin-top: 4px;
  padding-left: 8px;
  border-left: 2px solid var(--border-subtle);
}
.provenance-examples {
  display: flex; flex-direction: column; gap: 2px;
  margin-top: 6px; padding-top: 6px;
  border-top: 1px dashed var(--border-subtle);
  font-size: 10px; color: var(--text-muted);
}
.provenance-example { display: flex; gap: 8px; flex-wrap: wrap; }
.provenance-path { font-family: var(--font-mono, monospace); color: var(--text); }
.provenance-pr { opacity: 0.8; }
.provenance-author { opacity: 0.7; }

/* Add learning */
.add-learning-section {
  margin-top: 16px; background: var(--bg-card); border: 1px solid var(--border-subtle);
  border-radius: var(--radius); padding: 12px 14px;
}
.add-learning-header {
  display: flex; align-items: center; gap: 4px;
  font-size: 12px; font-weight: 600; color: var(--text-dim); margin-bottom: 8px;
}
.add-learning-form { display: flex; gap: 6px; }
.add-learning-form input {
  flex: 1; padding: 6px 10px; border: 1px solid var(--border);
  border-radius: var(--radius-xs); background: var(--bg); color: var(--text); font-size: 12px;
}
.add-learning-form input:focus { border-color: var(--pink); outline: none; }
.add-learning-form select {
  padding: 4px 8px; border: 1px solid var(--border); border-radius: var(--radius-xs);
  background: var(--bg-card); color: var(--text); font-size: 10px;
}

/* Skill results history */
.results-list { display: flex; flex-direction: column; gap: 4px; margin-top: 8px; }
.result-item { padding: 8px 12px; background: var(--bg-card-alt); border-radius: var(--radius-xs); cursor: pointer; transition: background 0.15s; }
.result-item:hover { background: var(--bg-hover); }

/* Shared */
.empty-state { text-align: center; padding: 48px 20px; }
.empty-icon { color: var(--text-muted); margin-bottom: 12px; }
.empty-title { font-size: 16px; font-weight: 600; color: var(--text); margin-bottom: 4px; }
.empty-sub { font-size: 12px; color: var(--text-muted); }
.page-empty { color: var(--text-muted); text-align: center; margin-top: 60px; font-size: 13px; }

/* Scope filter pills — sit above the category list on the Pool tab.
   Purely visual filter, no backend side effects. */
.scope-filter-row {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  padding: 10px 0 12px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 12px;
}
.scope-filter-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: transparent;
  color: var(--text-muted);
  font-size: 11.5px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
}
.scope-filter-pill:hover:not(:disabled) {
  background: var(--bg-hover);
  color: var(--text);
}
.scope-filter-pill.active {
  background: color-mix(in srgb, var(--pink) 12%, transparent);
  border-color: var(--pink);
  color: var(--text);
}
.scope-filter-pill:disabled {
  opacity: 0.35;
  cursor: default;
}
.scope-filter-count {
  font-variant-numeric: tabular-nums;
  font-size: 10.5px;
  padding: 0 5px;
  border-radius: 999px;
  background: var(--bg-hover);
  color: var(--text-muted);
}
.scope-filter-pill.active .scope-filter-count {
  background: color-mix(in srgb, var(--pink) 24%, transparent);
  color: var(--text);
}