/* ===== Knowledge Base (RAG) ===== */
.kb-ask { padding: 18px 20px; }
.kb-ask-head { display: flex; flex-direction: column; gap: 3px; margin-bottom: 12px; }
.kb-ask-title { font-weight: 700; font-size: 15px; }
.kb-ask-sub { font-size: 12px; color: var(--text-2); }
.kb-ask-row { display: flex; gap: 10px; }
.kb-ask-row input { flex: 1; background: var(--bg-2); border: 1px solid var(--line-2);
  color: var(--text-0); padding: 10px 14px; border-radius: 8px; font-size: 14px; }
.kb-thinking { margin-top: 12px; font-size: 13px; color: var(--text-2); }
.kb-answer-card { margin-top: 14px; background: var(--bg-2); border: 1px solid var(--line-2);
  border-left: 3px solid var(--brand, #5c84f2); border-radius: 10px; padding: 14px 16px; }
.kb-answer-body { font-size: 14px; line-height: 1.6; white-space: pre-wrap; }
.kb-sources { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 12px;
  padding-top: 10px; border-top: 1px solid var(--line-2); }
.kb-src-label { font-size: 11px; text-transform: uppercase; letter-spacing: 1px; color: var(--text-2); }
.kb-src-chip { font-size: 12px; color: var(--brand, #5c84f2); background: transparent;
  border: 1px solid var(--brand, #5c84f2); border-radius: 999px; padding: 4px 11px; cursor: pointer; }
.kb-src-chip:hover { background: color-mix(in srgb, var(--brand, #5c84f2) 14%, transparent); }

.kb-card { cursor: pointer; display: flex; flex-direction: column; gap: 8px; transition: border-color .12s ease, transform .12s ease; }
.kb-card:hover { border-color: var(--brand, #5c84f2); transform: translateY(-2px); }
.kb-card-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.kb-card-title { font-weight: 650; font-size: 14.5px; }
.kb-card-excerpt { font-size: 12.5px; color: var(--text-2); line-height: 1.5; }
.kb-card-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin-top: auto; }
.kb-tag { font-size: 11px; color: var(--text-2); background: var(--bg-2); border: 1px solid var(--line-2);
  border-radius: 6px; padding: 2px 7px; }
.kb-when { margin-left: auto; font-size: 11px; color: var(--text-3, var(--text-2)); }
.kb-read-meta { margin-bottom: 12px; }
.kb-read-body { font-size: 14px; line-height: 1.7; white-space: pre-wrap; }
.kb-read-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
.topbar-search input {
  background: var(--bg-2);
  border: 1px solid var(--line-2);
  color: var(--text-0);
  padding: 7px 12px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  width: 280px;
  outline: none;
  transition: border 0.1s;
  font-family: var(--font);
}
.topbar-search input:focus { border-color: var(--brand); }
.topbar-search input::placeholder { color: var(--text-3); }

.content {
  flex: 1;
  overflow-y: auto;
  padding: 24px 28px 60px;
  scrollbar-width: thin;
  scrollbar-color: var(--bg-3) transparent;
}
.content::-webkit-scrollbar { width: 8px; }
.content::-webkit-scrollbar-thumb { background: var(--bg-3); border-radius: 4px; }