/* knowledge/learn P1 — upload/edit media, text upload, learn materials tab */

/* ----- Upload tabs (pill style) ----- */
.kb-page .kb-upload-tabs {
  display: flex;
  gap: 8px;
  padding: 12px 16px;
  background: var(--color-card);
  border-bottom: 1px solid var(--color-border-light);
}
.kb-page .kb-upload-tab {
  flex: 1;
  padding: 8px 4px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-card);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
}
.kb-page .kb-upload-tab.active {
  background: var(--color-brand);
  color: #fff;
  border-color: var(--color-brand);
}

/* ----- Upload zone ----- */
.kb-page .kb-upload-area {
  margin: 16px;
  padding: 40px 24px;
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-card);
}
.kb-page .kb-upload-area:active {
  border-color: var(--color-brand);
  background: var(--color-brand-light);
}
.kb-page .kb-ua-icon {
  border-radius: var(--radius-md);
  background: var(--color-bg);
}
.kb-page .kb-ua-title {
  font-weight: 600;
  color: var(--color-text-primary);
}
.kb-page .kb-ua-format {
  border: none;
  background: var(--color-bg);
  font-weight: 500;
}

/* ----- Media preview (upload) — override cases cover crop ----- */
.kb-page .video-preview-block,
.kb-page .kb-media-preview-card {
  margin: 16px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-card);
  box-shadow: var(--shadow-sm, 0 1px 2px rgba(0, 0, 0, 0.05));
}
.kb-page .kb-media-preview-inner,
.kb-page .video-preview-block .kb-media-preview-inner {
  background: #0f0f1a;
}
.kb-page .video-preview-block .media-preview,
.kb-page .kb-media-preview-inner video,
.kb-page .kb-media-preview-inner audio {
  width: 100%;
  display: block;
  max-height: none;
}
.kb-page .kb-media-preview-inner video,
.kb-page .video-preview-block video.media-preview {
  aspect-ratio: 16 / 9;
  object-fit: contain;
  background: #0f0f1a;
}
.kb-page .kb-media-preview-inner audio,
.kb-page .video-preview-block audio.media-preview {
  height: 48px;
  object-fit: initial;
}
.kb-page .kb-media-preview-foot,
.kb-page .video-preview-block .kb-media-preview-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 16px;
  background: var(--color-card);
  border-top: 1px solid var(--color-border-light);
  font-size: 12px;
  color: var(--color-text-secondary);
  position: static;
  background-image: none;
  pointer-events: auto;
}
.kb-page .kb-media-preview-foot span:first-child {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.kb-page .kb-media-preview-duration {
  font-weight: 600;
  color: var(--color-text-primary);
  flex-shrink: 0;
}
.kb-page .kb-media-preview-remove,
.kb-page .video-preview-block .video-remove-btn {
  position: static;
  width: auto;
  height: auto;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-error);
  font-size: 18px;
  padding: 4px 8px;
  flex-shrink: 0;
}

/* ----- Edit media player card ----- */
.kb-page .kb-media-player-card {
  margin: 16px;
  background: var(--color-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm, 0 1px 2px rgba(0, 0, 0, 0.05));
}
.kb-page .kb-media-edit-player {
  margin-bottom: 0;
  background: #0f0f1a;
}
.kb-page .kb-media-player-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 16px;
  font-size: 12px;
  color: var(--color-text-secondary);
  border-top: 1px solid var(--color-border-light);
}
.kb-page .kb-media-player-meta .kb-media-player-duration {
  font-weight: 600;
  color: var(--color-text-primary);
  flex-shrink: 0;
}

/* ----- Upload / edit status banners ----- */
.kb-upload-error-banner,
.kb-media-status-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  margin: 0 16px 12px;
  border-radius: var(--radius-md);
  font-size: 13px;
}
.kb-upload-error-banner {
  background: #fee2e2;
  border: 1px solid #fecaca;
}
.kb-upload-error-banner-title {
  font-weight: 600;
  color: var(--color-error);
  margin-bottom: 2px;
}
.kb-upload-error-banner-desc {
  font-size: 12px;
  color: var(--color-text-secondary);
}
.kb-upload-error-banner-action,
.kb-media-status-banner-action {
  border: none;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  background: var(--color-error);
  color: #fff;
  flex-shrink: 0;
}
.kb-media-status-banner--transcribing {
  background: var(--color-brand-light);
  border: 1px solid #bfdbfe;
}
.kb-media-status-banner--transcribing .kb-media-status-banner-title {
  font-weight: 600;
  color: var(--color-brand-dark);
}
.kb-media-status-banner--failed {
  background: #fee2e2;
  border: 1px solid #fecaca;
}
.kb-media-status-banner--failed .kb-media-status-banner-title {
  font-weight: 600;
  color: var(--color-error);
}
.kb-media-status-banner-desc {
  font-size: 12px;
  color: var(--color-text-tertiary);
  margin-top: 2px;
}
.kb-media-status-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--color-brand);
  border-top-color: transparent;
  border-radius: 50%;
  animation: kb-p4-spin 0.8s linear infinite;
  flex-shrink: 0;
}
@keyframes kb-p4-spin {
  to { transform: rotate(360deg); }
}

/* ----- Upload progress ----- */
.kb-page #kbMediaUploadProgress.upload-progress {
  margin: 0 16px 16px;
  padding: 16px;
  background: var(--color-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
}
.kb-page #kbMediaUploadProgress .upload-progress-bar {
  height: 6px;
  background: var(--color-border-light);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 8px;
}
.kb-page #kbMediaUploadProgress .upload-progress-bar div {
  height: 100%;
  background: linear-gradient(90deg, var(--color-brand), var(--color-brand-dark));
  border-radius: 3px;
  transition: width 0.3s;
}
.kb-page #kbMediaUploadProgressText {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--color-text-secondary);
  text-align: left;
  margin: 0;
}
.kb-upload-form--busy {
  opacity: 0.45;
  pointer-events: none;
}
.kb-upload-form--busy .kb-upload-submit,
.kb-upload-form--busy #btnKbSubmitMedia {
  opacity: 1;
  pointer-events: auto;
}

/* ----- Text upload save status ----- */
.kb-save-status-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  margin: 0 16px 12px;
  border-radius: var(--radius-md);
  font-size: 13px;
}
.kb-save-status-banner--saving {
  background: var(--color-brand-light);
  border: 1px solid #bfdbfe;
  color: var(--color-brand-dark);
}
.kb-save-status-banner--error {
  background: #fee2e2;
  border: 1px solid #fecaca;
}
.kb-save-status-banner--error .kb-save-status-title {
  font-weight: 600;
  color: var(--color-error);
}
.kb-save-status-actions {
  display: flex;
  gap: 8px;
  margin-left: auto;
  flex-shrink: 0;
}
.kb-save-status-actions button {
  border: none;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
}
.kb-save-status-retry {
  background: var(--color-error);
  color: #fff;
}
.kb-save-status-dismiss {
  background: var(--color-card);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border) !important;
}

/* ----- Learn materials tab ----- */
.kb-learn-content--materials .kb-learn-section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 16px 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-primary);
}
.kb-learn-content--materials .kb-learn-section-head-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}
.kb-learn-content--materials .kb-learn-section-head-actions .kb-learn-section-link {
  font-size: 13px;
  font-weight: 600;
}
.kb-learn-content--materials .kb-learn-section-count {
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-tertiary);
}
.kb-learn-materials-skeleton {
  padding: 16px;
}
.kb-learn-materials-skeleton .kb-learn-skeleton-card {
  height: 64px;
  border-radius: var(--radius-md);
  margin-bottom: 8px;
  background: linear-gradient(90deg, var(--color-border-light) 25%, var(--color-bg) 50%, var(--color-border-light) 75%);
  background-size: 200% 100%;
  animation: kb-p4-shimmer 1.5s ease-in-out infinite;
}
@keyframes kb-p4-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
.kb-learn-content--materials .kb-learn-asset-item {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm, 0 1px 2px rgba(0, 0, 0, 0.05));
  margin-bottom: 8px;
}
.kb-learn-content--materials .kb-learn-asset-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-size: 20px;
  background: var(--color-bg);
}
.kb-learn-content--materials .kb-learn-asset-item[data-type="video"] .kb-learn-asset-icon {
  background: #fef3c7;
}
.kb-learn-content--materials .kb-learn-asset-item[data-type="audio"] .kb-learn-asset-icon {
  background: var(--color-brand-light);
}
.kb-learn-content--materials .kb-learn-asset-item[data-type="text"] .kb-learn-asset-icon {
  background: #d1fae5;
}
.kb-learn-content--materials .kb-learn-folder-grid {
  padding: 0 16px 8px;
}
.kb-page .kb-form-textarea--tall { min-height: 200px; line-height: 1.8; }

.kb-learn-content--materials .kb-learn-asset-chevron {
  color: var(--color-text-tertiary);
  font-size: 18px;
  flex-shrink: 0;
  margin-left: 4px;
}

.kb-learn-content--materials .kb-empty-state {
  margin: 16px;
  padding: 32px 20px;
  background: var(--color-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  text-align: center;
}

/* ===== P2 · 课程详情 ===== */
.kb-course-detail-page .kb-course-detail-content {
  padding-bottom: 88px;
}
.kb-course-hero {
  background: linear-gradient(135deg, var(--color-brand), #1d4ed8);
  color: #fff;
  padding: 24px 16px;
}
.kb-course-hero-title {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 8px;
}
.kb-course-hero-desc {
  font-size: 13px;
  opacity: 0.85;
  line-height: 1.6;
  margin-bottom: 12px;
}
.kb-course-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 16px;
  font-size: 12px;
  opacity: 0.75;
}
.kb-course-progress-section {
  padding: 16px;
  padding-bottom: 0;
}
.kb-course-progress-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}
.kb-course-progress-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-primary);
}
.kb-course-progress-pct {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-brand);
}
.kb-course-progress-track {
  height: 6px;
  background: var(--color-border-light);
  border-radius: 3px;
  overflow: hidden;
}
.kb-course-progress-fill {
  height: 100%;
  background: var(--color-brand);
  border-radius: 3px;
  transition: width 0.3s;
}
.kb-course-section-title {
  padding: 16px 16px 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-primary);
}
.kb-course-asset-list {
  padding: 0 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.kb-course-asset-card {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  width: 100%;
  padding: 12px;
  background: var(--color-card);
  border: none;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm, 0 1px 2px rgba(0, 0, 0, 0.05));
  text-align: left;
  cursor: pointer;
}
.kb-course-asset-card:active { opacity: 0.92; }
.kb-course-asset-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.kb-course-asset-icon--video { background: #fee2e2; }
.kb-course-asset-icon--audio { background: var(--color-brand-light); }
.kb-course-asset-icon--text { background: #d1fae5; }
.kb-course-asset-info { flex: 1; min-width: 0; }
.kb-course-asset-name {
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.kb-course-asset-meta {
  font-size: 12px;
  color: var(--color-text-tertiary);
}
.kb-course-asset-status {
  font-size: 12px;
  font-weight: 600;
  flex-shrink: 0;
  align-self: center;
}
.kb-course-asset-status--done { color: var(--color-success); }
.kb-course-asset-status--progress { color: var(--color-warning); }
.kb-course-asset-status--pending { color: var(--color-text-tertiary); }
.kb-course-bottom-bar {
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  bottom: 0;
  width: 100%;
  max-width: 420px;
  padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
  background: var(--color-card);
  border-top: 1px solid var(--color-border-light);
  z-index: 20;
}
.kb-course-continue-btn { width: 100%; }
.kb-course-detail-skeleton { padding: 16px; }
.kb-course-skeleton-hero {
  height: 160px;
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  background: linear-gradient(90deg, var(--color-border-light) 25%, var(--color-bg) 50%, var(--color-border-light) 75%);
  background-size: 200% 100%;
  animation: kb-p4-shimmer 1.5s ease-in-out infinite;
}
.kb-course-skeleton-line,
.kb-course-skeleton-card {
  height: 14px;
  border-radius: 6px;
  margin-bottom: 8px;
  background: linear-gradient(90deg, var(--color-border-light) 25%, var(--color-bg) 50%, var(--color-border-light) 75%);
  background-size: 200% 100%;
  animation: kb-p4-shimmer 1.5s ease-in-out infinite;
}
.kb-course-skeleton-card { height: 64px; border-radius: var(--radius-md); }
.kb-course-empty-box {
  margin: 16px;
  padding: 48px 24px;
  background: var(--color-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  text-align: center;
}
.kb-course-error-box {
  margin: 24px 16px;
  padding: 48px 24px;
  text-align: center;
}

/* ===== P2 · 课程表单 ===== */
.kb-course-form-page .kb-course-form-content {
  padding: 16px 16px 80px;
}
.kb-course-form-card {
  background: var(--color-card);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 12px;
  box-shadow: var(--shadow-sm, 0 1px 2px rgba(0, 0, 0, 0.05));
}
.kb-course-form-card-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 12px;
}
.kb-course-form-title {
  width: 100%;
  box-sizing: border-box;
  padding: 12px 14px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
  background: var(--color-card);
}
.kb-course-form-desc,
.kb-course-form-select {
  width: 100%;
  box-sizing: border-box;
  padding: 12px 14px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  background: var(--color-card);
}
.kb-course-form-desc {
  min-height: 80px;
  resize: vertical;
  line-height: 1.6;
}
.kb-course-form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}
.kb-course-form-hint {
  font-size: 12px;
  color: var(--color-text-tertiary);
  margin-top: 8px;
  line-height: 1.5;
}
.kb-course-source-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.kb-course-source-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.kb-course-source-option.active {
  border-color: var(--color-brand);
  background: var(--color-brand-light);
}
.kb-course-source-option input { display: none; }
.kb-course-source-dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  flex-shrink: 0;
  position: relative;
}
.kb-course-source-option.active .kb-course-source-dot {
  border-color: var(--color-brand);
}
.kb-course-source-option.active .kb-course-source-dot::after {
  content: "";
  position: absolute;
  left: 3px;
  top: 3px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-brand);
}
.kb-course-source-label {
  font-size: 14px;
  font-weight: 500;
}
.kb-course-source-block { margin-top: 12px; }
.kb-course-form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M6 8L1 3h10z' fill='%239CA3AF'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}
.kb-course-form-page .kb-course-asset-picker {
  max-height: 200px;
  overflow-y: auto;
}
.kb-course-form-page .kb-course-asset-option {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 0;
  border: none;
  background: transparent;
}
.kb-course-form-page .kb-course-delete-btn {
  width: 100%;
  margin-top: 8px;
  color: var(--color-error);
  border-color: var(--color-error);
}
.kb-course-form-overlay {
  position: fixed;
  inset: 0;
  max-width: 420px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.88);
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 200;
  pointer-events: none;
}
.kb-course-form-overlay[style*="display: block"],
.kb-course-form-overlay[style*="display:flex"],
.kb-course-form-overlay[style*="display: flex"] {
  display: flex !important;
  pointer-events: auto;
}
.kb-course-form-overlay-text {
  margin-top: 12px;
  font-size: 14px;
  color: var(--color-text-secondary);
}
.kb-course-form-error {
  margin: 12px 16px 0;
  padding: 12px 14px;
  background: #fee2e2;
  border: 1px solid #fecaca;
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--color-error);
}

/* ===== P2 · 待审核 ===== */
.kb-reviews-content { padding-bottom: 24px; }
.kb-review-tab-bar {
  display: flex;
  gap: 4px;
  padding: 0 12px;
  background: var(--color-card);
  border-bottom: 1px solid var(--color-border-light);
}
.kb-review-tab {
  flex: 1;
  padding: 12px 4px;
  text-align: center;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-tertiary);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
}
.kb-review-tab.active {
  color: var(--color-brand);
  border-bottom-color: var(--color-brand);
  font-weight: 600;
}
.kb-review-tab-count {
  font-size: 12px;
  background: var(--color-border-light);
  color: var(--color-text-secondary);
  border-radius: 10px;
  padding: 1px 7px;
  margin-left: 4px;
}
.kb-review-tab.active .kb-review-tab-count {
  background: var(--color-brand-light);
  color: var(--color-brand);
}
.kb-reviews-content .kb-review-list { padding: 16px; }
.kb-review-card {
  background: var(--color-card);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 12px;
  box-shadow: var(--shadow-sm, 0 1px 2px rgba(0, 0, 0, 0.05));
}
.kb-review-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}
.kb-review-owner {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-primary);
}
.kb-review-type-badge {
  font-size: 12px;
  color: var(--color-brand);
  background: var(--color-brand-light);
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 500;
}
.kb-review-status-label {
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 4px;
}
.kb-review-status-label--approved { background: #d1fae5; color: #065f46; }
.kb-review-status-label--rejected { background: #fee2e2; color: #991b1b; }
.kb-review-title {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 8px;
}
.kb-review-reason {
  font-size: 13px;
  color: var(--color-text-secondary);
  background: var(--color-bg);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  line-height: 1.5;
}
.kb-review-reason-label {
  display: block;
  font-size: 11px;
  color: var(--color-text-tertiary);
  margin-bottom: 2px;
}
.kb-review-date {
  font-size: 12px;
  color: var(--color-text-tertiary);
}
.kb-review-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}
.kb-review-reject-btn {
  flex: 1;
  padding: 10px 0;
  background: var(--color-card);
  color: var(--color-error);
  border: 1.5px solid var(--color-error);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
}
.kb-review-approve-btn {
  flex: 1;
  padding: 10px 0;
  background: var(--color-success);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
}
.kb-review-skeleton {
  padding: 16px;
}
.kb-review-skeleton-card {
  height: 120px;
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  background: linear-gradient(90deg, var(--color-border-light) 25%, var(--color-bg) 50%, var(--color-border-light) 75%);
  background-size: 200% 100%;
  animation: kb-p4-shimmer 1.5s ease-in-out infinite;
}

/* ===== P2 · gap 清单 ===== */
.kb-learn-empty-guide-icon--svg svg {
  width: 44px;
  height: 44px;
}
.kb-course-card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  margin-right: 6px;
  vertical-align: -4px;
  color: var(--color-brand);
}
.kb-dash-member-avatar--initial {
  background: var(--color-brand);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
}

/* ===== 库内 Folder Header · 顶栏管理 ===== */
.kb-folder-header {
  padding: 0 16px 8px;
  background: var(--color-bg-page, #F5F6F8);
  border-bottom: none;
}
.kb-folder-header-title {
  display: none;
  margin: 0;
  font-size: 22px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text-primary, #111827);
  letter-spacing: -0.02em;
}
.kb-folder-header-meta {
  display: none;
  margin: 6px 0 0;
  font-size: 13px;
  line-height: 1.4;
  color: var(--color-text-secondary, #6b7280);
}
.kb-folder-header-desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--color-text-secondary, #6b7280);
}
.kb-page .kb-nav-more {
  /* 细则见 10-notes.css · .kb-list-nav-header .kb-nav-more.nav-action */
  color: var(--color-text-primary, #111827);
}
.kb-list-nav-header--in-folder .nav-title {
  display: block;
}

/* ===== 子文件夹 · 添加内容 · 列表预览 ===== */
.kb-in-folder-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 0 0 20px;
  background: transparent;
  min-height: 100%;
  box-sizing: border-box;
}
.kb-in-folder-subfolders {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: 12px;
  padding: 0;
}
.kb-folder-note-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 0;
}
.kb-folder-note-list .note-list-memory-card {
  margin: 0;
}
.kb-folder-note-list .note-list-memory-card-shell {
  border-radius: var(--radius-md);
  background: var(--color-card, #fff);
  box-shadow: var(--shadow-card, 0 1px 3px rgba(15, 23, 42, 0.06));
}
.kb-list-content:has(.kb-in-folder-list),
.kb-list-content:has(.kb-folder-note-list),
.kb-page--in-folder .kb-list-content {
  background: var(--color-bg-page, #F5F6F8);
  padding: 0 16px calc(16px + env(safe-area-inset-bottom));
}
.kb-subfolder-wrap { position: relative; }
.kb-subfolder-wrap--mine { padding-right: 0; }
.kb-subfolder-row {
  display: flex; align-items: center; gap: 12px; width: 100%;
  padding: 14px 16px; border: none; background: var(--color-bg-card);
  border-radius: var(--radius-md); margin-bottom: 10px; text-align: left;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06);
}
.kb-subfolder-wrap--mine .kb-subfolder-row { padding-right: 40px; }
.kb-subfolder-icon { font-size: 22px; line-height: 1; flex-shrink: 0; }
.kb-subfolder-info { flex: 1; min-width: 0; }
.kb-subfolder-name { font-size: 15px; font-weight: 600; color: var(--color-text-primary); }
.kb-subfolder-meta { font-size: 12px; color: var(--color-text-secondary); margin-top: 4px; }
.kb-subfolder-wrap--mine .kb-card-menu {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  flex: none;
  width: 36px;
  height: 36px;
  padding: 0;
  align-self: auto;
  background: transparent;
  border-radius: var(--radius-sm);
}

.kb-loose-card.kb-asset-card--preview { align-items: flex-start; }
.kb-loose-preview {
  font-size: 13px; line-height: 1.45; color: var(--color-text-secondary);
  margin-top: 6px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.kb-loose-thumb {
  width: 52px; height: 52px; border-radius: 10px; overflow: hidden; flex-shrink: 0;
  background: var(--color-border-light);
}
.kb-loose-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }

.kb-sheet-opt--subfolder .kb-sheet-opt-bar { background: #7C3AED; }
.kb-sheet-opt--note .kb-sheet-opt-bar { background: #0891B2; }
.kb-sheet-opt-icon--note { background: #ECFEFF; color: #0891B2; }

.kb-subfolder-quick-input {
  width: 100%; box-sizing: border-box; margin: 8px 0 12px;
  padding: 12px 14px; border: 1px solid var(--color-border); border-radius: var(--radius-md);
  font-size: 15px; background: var(--color-bg-card);
}
.kb-subfolder-quick-submit { width: 100%; margin-bottom: 8px; }

.kb-note-pick-panel { padding-bottom: calc(8px + env(safe-area-inset-bottom)); }
.kb-note-pick-filters { margin-bottom: 8px; }
.kb-note-pick-search-wrap {
  position: relative;
  margin-bottom: 10px;
}
.kb-note-pick-search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 14px;
  opacity: 0.45;
  pointer-events: none;
}
.kb-note-pick-search {
  width: 100%;
  box-sizing: border-box;
  padding: 10px 12px 10px 34px;
  border: 1px solid var(--color-border-light);
  border-radius: 12px;
  background: var(--color-bg, #f5f5f7);
  font-size: 14px;
  color: var(--color-text-primary);
  outline: none;
}
.kb-note-pick-search:focus {
  border-color: var(--color-brand, #2563eb);
  background: #fff;
}
.kb-note-pick-filter-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}
.kb-note-pick-date-label {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}
.kb-note-pick-date-text {
  flex-shrink: 0;
  font-size: 13px;
  color: var(--color-text-secondary);
}
.kb-note-pick-date {
  flex: 1;
  min-width: 0;
  box-sizing: border-box;
  padding: 8px 10px;
  border: 1px solid var(--color-border-light);
  border-radius: 10px;
  background: var(--color-bg-card);
  font-size: 14px;
  color: var(--color-text-primary);
}
.kb-note-pick-date-clear {
  flex-shrink: 0;
  border: none;
  background: transparent;
  color: var(--color-brand, #2563eb);
  font-size: 13px;
  padding: 6px 4px;
}
.kb-note-pick-tags {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  margin-bottom: 4px;
  -webkit-overflow-scrolling: touch;
}
.kb-note-pick-tags:empty { display: none; }
.kb-note-pick-tag {
  flex-shrink: 0;
  border: 1px solid var(--color-border-light);
  background: var(--color-bg-card);
  color: var(--color-text-secondary);
  font-size: 12px;
  padding: 5px 12px;
  border-radius: 999px;
  white-space: nowrap;
}
.kb-note-pick-tag--active {
  border-color: var(--color-brand, #2563eb);
  background: #eff6ff;
  color: var(--color-brand, #2563eb);
  font-weight: 600;
}
.kb-note-pick-list {
  max-height: min(46vh, 380px);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 12px;
  -webkit-overflow-scrolling: touch;
}
.kb-note-pick-item {
  width: 100%;
  text-align: left;
  border: 1px solid var(--color-border-light);
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.kb-note-pick-item--selected {
  border-color: #bfdbfe;
  background: #f8fbff;
}
.kb-note-pick-check {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 1px;
  border-radius: 50%;
  border: 2px solid #d1d5db;
  box-sizing: border-box;
  position: relative;
}
.kb-note-pick-item--selected .kb-note-pick-check {
  border-color: var(--color-brand, #2563eb);
  background: var(--color-brand, #2563eb);
}
.kb-note-pick-item--selected .kb-note-pick-check::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 2px;
  width: 5px;
  height: 9px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}
.kb-note-pick-body { flex: 1; min-width: 0; }
.kb-note-pick-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-primary);
  line-height: 1.4;
}
.kb-note-pick-meta {
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-top: 4px;
  line-height: 1.4;
}
.kb-note-pick-tags-inline {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 6px;
}
.kb-note-pick-tag-inline {
  font-size: 11px;
  color: #6b7280;
  background: #f3f4f6;
  border-radius: 4px;
  padding: 2px 6px;
}
.kb-note-pick-foot {
  display: flex;
  gap: 10px;
}
.kb-note-pick-cancel,
.kb-note-pick-confirm {
  flex: 1;
  height: 44px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
}
.kb-note-pick-cancel {
  border: 1px solid var(--color-border-light);
  background: var(--color-bg-card);
  color: var(--color-text-primary);
}
.kb-note-pick-confirm {
  border: none;
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.28);
}
.kb-note-pick-confirm:disabled {
  opacity: 0.45;
  box-shadow: none;
}
.kb-note-pick-empty {
  text-align: center;
  font-size: 13px;
  color: var(--color-text-secondary);
  padding: 24px 12px;
}

/* 知识库文件夹 · 多选模式（get 笔记风格） */
body.kb-multi-select-open nav#tabBar {
  display: none !important;
  pointer-events: none !important;
  visibility: hidden !important;
}
.kb-page--multi-select .kb-list-content {
  padding-bottom: calc(96px + env(safe-area-inset-bottom));
}
.kb-page--multi-select .kb-folder-header {
  display: none !important;
}
.kb-list-nav-header--multi-select .nav-back {
  visibility: visible;
}
.kb-list-nav-header--multi-select .nav-title {
  display: block !important;
}
.kb-list-nav-header--multi-select .kb-nav-actions {
  display: none !important;
}
.kb-multi-select-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 4px 0 12px;
}
.kb-multi-select-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  width: 100%;
  padding: 14px 14px;
  border: 1px solid var(--color-border, #f0f0f0);
  border-radius: 14px;
  background: #fff;
  text-align: left;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
}
.kb-multi-select-item--selected {
  background: #f8fafc;
  border-color: #dbeafe;
}
.kb-multi-select-check {
  flex: 0 0 22px;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border-radius: 50%;
  border: 2px solid #d1d5db;
  box-sizing: border-box;
  position: relative;
}
.kb-multi-select-item--selected .kb-multi-select-check {
  border-color: #111827;
  background: #111827;
}
.kb-multi-select-item--selected .kb-multi-select-check::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 3px;
  width: 5px;
  height: 9px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}
.kb-multi-select-body { flex: 1; min-width: 0; }
.kb-multi-select-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text, #111827);
  line-height: 1.35;
  word-break: break-word;
}
.kb-multi-select-meta {
  margin-top: 6px;
  font-size: 12px;
  color: var(--color-text-secondary, #6b7280);
}
.kb-multi-select-bar {
  position: fixed;
  left: 12px;
  right: 12px;
  bottom: calc(12px + env(safe-area-inset-bottom));
  z-index: 220;
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 2px;
  padding: 10px 8px;
  border-radius: 18px;
  background: #fff;
  border: 1px solid #f3f4f6;
  box-shadow: 0 8px 28px rgba(15, 23, 42, 0.12);
}
/* display:flex 会盖掉 UA 的 [hidden]{display:none}，非多选必须显式隐藏 */
.kb-multi-select-bar[hidden] {
  display: none !important;
}
.kb-multi-bar-btn {
  flex: 1 1 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 0 2px;
  border: none;
  background: transparent;
  color: var(--color-text, #374151);
  line-height: 1;
}
.kb-multi-bar-btn:disabled {
  opacity: 0.35;
  pointer-events: none;
}
.kb-multi-bar-btn--close {
  flex: 0 0 44px;
  font-size: 20px;
  color: var(--color-text-secondary, #6b7280);
}
.kb-multi-bar-btn--danger { color: var(--color-danger, #dc2626); }
.kb-multi-bar-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  font-size: 20px;
  line-height: 1;
}
.kb-multi-bar-label {
  font-size: 11px;
  line-height: 1.2;
  white-space: nowrap;
}