/* 库页：列表 + 提取工作台 */

.lib-shell {
  grid-template-columns: var(--st-rail-w) minmax(0, 1fr);
}

.lib-body {
  display: grid;
  grid-template-columns: minmax(260px, 32%) minmax(0, 1fr);
  gap: 16px;
  align-items: stretch;
  flex: 1;
  min-height: 0;
  overflow: hidden;
  padding: 0 20px 16px;
}

.lib-list-pane,
.lib-work-pane {
  min-width: 0;
  min-height: 0;
  overflow: auto;
}

.lib-work-card {
  background: var(--st-surface);
  border: 1px solid var(--st-border);
  border-radius: var(--st-radius);
  padding: 16px 18px 20px;
}

.lib-work-card h3 {
  margin: 0 0 6px;
  font-size: 15px;
}

.lib-work-card h4 {
  margin: 16px 0 8px;
  font-size: 13px;
  color: var(--st-muted);
  font-weight: 600;
}

.lib-chat {
  max-height: 280px;
  overflow: auto;
  border: 1px solid var(--st-border);
  border-radius: 6px;
  padding: 10px 12px;
  background: var(--st-bg);
  margin: 12px 0;
  font-size: 13px;
}

.lib-chat-empty {
  color: var(--st-faint);
  margin: 0;
}

.lib-msg {
  margin: 0 0 10px;
}

.lib-msg:last-child {
  margin-bottom: 0;
}

.lib-msg-role {
  font-size: 11px;
  font-weight: 600;
  color: var(--st-muted);
  margin-bottom: 2px;
}

.lib-msg-body {
  white-space: pre-wrap;
  word-break: break-word;
}

.lib-composer textarea,
.lib-draft textarea,
.lib-samples-field textarea {
  width: 100%;
  resize: vertical;
  border: 1px solid var(--st-border);
  border-radius: 6px;
  padding: 8px 10px;
  background: var(--st-surface);
  color: var(--st-text);
}

.lib-composer-actions,
.storage-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-top: 8px;
}

.lib-ready-hint {
  font-size: 12px;
  color: var(--st-muted);
}

.lib-candidates {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 8px 0 4px;
}

.lib-candidate {
  border: 1px solid var(--st-border);
  border-radius: 6px;
  padding: 8px 10px;
  background: var(--st-bg);
}

.lib-candidate-actions {
  display: flex;
  gap: 6px;
  margin-top: 6px;
}

.lib-candidate.is-ready {
  border-color: color-mix(in srgb, var(--st-ok) 55%, var(--st-border));
  background: color-mix(in srgb, var(--st-ok) 9%, var(--st-surface));
}

@media (max-width: 900px) {
  .lib-body {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(0, 38%) minmax(0, 1fr);
  }
}