/* TeacherReviewWorkspaceSpec: read and confirm in a side panel; edit only on demand. */
/* Keep the navigation toggle above the content dim (20), below drawers (30) and modals. */
.kg-master-detail:has(.kg-library-review-page) > .kg-sidebar { z-index: 21; }
.kg-library-review-page .kg-library-workspace { grid-template-columns: minmax(0, 1fr); }
.kg-library-review-page .kg-library-workspace > .kg-library-rail { display: none; }
.kg-library-review-page .kg-library-review-breadcrumb { flex-wrap: wrap; }
.kg-library-review-page .kg-library-review-browse-actions { flex-wrap: wrap; justify-content: flex-end; }
.kg-library-review-page .kg-library-review-card-grid { grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); }
.kg-library-review-page .kg-library-variant-body { grid-template-columns: minmax(260px, 1fr) minmax(320px, 1fr); }
.kg-library-review-page .kg-library-variant-selected-list { min-width: 0; }
.kg-library-review-page .kg-library-variant-title-row { flex-wrap: wrap; }
.kg-teacher-review { width: min(920px, 82%); min-height: 0; }
.kg-library-review-page .kg-library-review-detail-backdrop { right: min(920px, 82%); }
.kg-teacher-review-head { flex: 0 0 auto; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: var(--space-150); padding: var(--space-200) var(--space-300); border-bottom: 1px solid var(--border-default); }
.kg-teacher-review-head h2 { margin: 0; font-size: 20px; color: var(--text-primary); }
.kg-teacher-review-actions { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-100); }
.kg-teacher-review-actions .btn { white-space: nowrap; }
.kg-teacher-review-body { flex: 1; min-height: 0; overflow: auto; overscroll-behavior: contain; }
.kg-teacher-review-comparison { min-height: 100%; display: grid; grid-template-columns: minmax(260px, 1fr) minmax(300px, 1fr); align-items: stretch; }
.kg-teacher-review-source { min-width: 0; border-right: 1px solid var(--border-default); background: var(--semantic-background-subtle); }
.kg-teacher-review-source-content { position: sticky; top: 0; padding: var(--space-250); }
.kg-teacher-review-source-content > header { margin-bottom: var(--space-200); }
.kg-teacher-review-source h3 { margin: 0; font-size: var(--text-style-body-medium-font-size, 16px); }
.kg-teacher-review-refined { min-width: 0; background: var(--semantic-background-default); }
.kg-teacher-review-source img { display: block; width: 100%; height: auto; background: var(--semantic-background-default); border: 1px solid var(--border-default); border-radius: var(--radius-md); }
.kg-teacher-review-section { display: grid; gap: var(--space-200); padding: var(--space-250); }
.kg-teacher-review-section + .kg-teacher-review-section { border-top: 1px solid var(--border-default); }
.kg-teacher-review-section-head { display: flex; align-items: center; justify-content: space-between; gap: var(--space-150); }
.kg-teacher-review-section-head h3 { font-size: 16px; }
.kg-teacher-review-edit-action { padding: var(--space-075) var(--space-100); border: 0; border-radius: var(--radius-sm); background: transparent; color: var(--text-secondary); font: inherit; font-size: 13px; cursor: pointer; }
.kg-teacher-review-edit-action:hover { color: var(--semantic-text-brand); background: var(--semantic-background-subtle); }
.kg-teacher-review-disclosure > summary { width: fit-content; padding-block: var(--space-100); color: var(--semantic-text-secondary); font-size: 13px; font-weight: var(--text-style-weight-medium); cursor: pointer; }
.kg-teacher-review-disclosure[open] > summary { margin-bottom: var(--space-100); }
.kg-teacher-review-section h3, .kg-teacher-review-section p { margin: 0; }
.kg-teacher-review-preview { color: var(--text-primary); line-height: 1.9; overflow-x: auto; overflow-wrap: anywhere; white-space: pre-wrap; font-size: var(--text-style-body-small-font-size); }
.kg-teacher-review-field { display: grid; gap: var(--space-100); font-size: 14px; font-weight: var(--text-style-weight-medium); }
.kg-teacher-review-field textarea { width: 100%; min-height: 180px; resize: vertical; padding: var(--space-150); border: 1px solid var(--border-default); border-radius: var(--radius-md); background: var(--semantic-background-default); color: var(--text-primary); font: inherit; line-height: 1.7; }
.kg-teacher-review-field input { width: 100%; }
.kg-teacher-review-editor, .kg-teacher-review-ai-chat { display: grid; gap: var(--space-150); min-width: 0; }
.kg-teacher-review-ai-chat { padding: var(--space-150); border: 1px solid var(--border-default); border-radius: var(--radius-md); background: var(--semantic-background-subtle); }
.kg-teacher-review-ai-chat textarea { min-height: 90px; }
.kg-teacher-review-ai-chat form > .kg-teacher-review-actions { justify-content: flex-end; }
.kg-teacher-review-ai-log { display: flex; flex-direction: column-reverse; gap: var(--space-150); max-height: 260px; overflow-y: auto; overscroll-behavior: contain; }
.kg-teacher-review-ai-turn { display: flex; flex-direction: column; gap: var(--space-100); }
.kg-teacher-review-ai-chat .kg-library-review-repair-message { font-size: 14px; white-space: pre-wrap; overflow-wrap: anywhere; }
.kg-teacher-review-ai-chat .kg-library-review-repair-message strong { font-size: 12px; }
.kg-teacher-review-ai-chat .kg-library-review-repair-message p { color: inherit; }
.kg-teacher-review-ai-chat .kg-library-review-repair-message.is-user strong { color: inherit; }
.kg-teacher-review-help { color: var(--text-secondary); font-size: 13px; line-height: 1.6; }
.kg-teacher-review-notice { margin: 0; padding: var(--space-100) var(--space-200); color: var(--text-secondary); background: var(--semantic-background-subtle); font-size: 14px; line-height: 1.6; }
.kg-teacher-review-footer { flex: 0 0 auto; display: grid; gap: var(--space-100); padding: var(--space-150) var(--space-250); border-top: 1px solid var(--border-default); background: var(--semantic-background-default); }
.kg-teacher-review-footer > .kg-teacher-review-actions { justify-content: space-between; }
.kg-teacher-review .kg-library-review-difficulty { padding: 0; flex-wrap: wrap; border: 0; gap: var(--space-200); background: var(--semantic-background-default); }
.kg-teacher-review .kg-library-review-difficulty > strong { font-size: 16px; }
.kg-teacher-review .kg-library-review-difficulty-options { flex: 0 1 auto; flex-wrap: wrap; justify-content: flex-start; gap: var(--space-150); }
.kg-teacher-review .radio { min-height: 40px; flex-shrink: 0; }
.kg-teacher-review .radio__label { white-space: nowrap; overflow: visible; text-overflow: clip; }
.kg-teacher-review-figure { display: grid; gap: var(--space-150); padding: var(--space-200); border: 1px solid var(--border-default); border-radius: var(--radius-md); }
.kg-teacher-review-figure img { display: block; width: 100%; max-height: 400px; object-fit: contain; }
.kg-teacher-review-figure-upload { display: inline-flex; align-items: center; min-height: 40px; padding: var(--space-100) var(--space-200); width: fit-content; border: 1px solid var(--border-default); border-radius: var(--radius-md); cursor: pointer; font-size: 14px; font-weight: var(--text-style-weight-medium); }
.kg-teacher-review-figure-upload:focus-within { outline: 2px solid var(--border-focus); outline-offset: 2px; }
.kg-teacher-figure-chat { display: flex; flex-direction: column; gap: var(--space-200); padding: var(--space-250); border: 1px solid var(--border-default); border-radius: var(--radius-md); background: var(--semantic-background-default); }
.kg-teacher-figure-chat h2 { margin: 0; font-size: 18px; }
.kg-teacher-figure-chat p { margin: 0; }
.kg-teacher-figure-chat { flex: 1; min-height: 0; overflow: auto; }
.kg-teacher-figure-chat .kg-teacher-review-ai-chat { flex: 1; align-content: start; }
.kg-teacher-figure-chat .kg-figure-intent { margin: 0; }
.kg-teacher-figure-modal { width: min(1440px, 96vw); max-width: min(1440px, 96vw); height: 90dvh; max-height: 960px; display: flex; flex-direction: column; padding: var(--space-300); }
.kg-teacher-figure-modal > .modal__header { flex: none; padding-right: var(--space-300); margin-bottom: var(--space-200); }
.kg-teacher-figure-modal > .modal__body { flex: 1; min-height: 0; overflow: auto; }
.kg-teacher-figure-modal-content { flex: 1; min-height: 0; display: grid; grid-template-columns: minmax(0, 1.65fr) minmax(320px, .72fr); gap: var(--space-200); }
.kg-teacher-figure-modal .kg-figure-workspace-editor { min-height: 0; }
.kg-teacher-figure-modal .kg-label-editor-modal { height: 100%; max-height: 100%; padding: var(--space-150); border: 1px solid var(--border-default); box-shadow: none; background: var(--semantic-background-default); }
.kg-teacher-figure-modal .kg-label-editor-modal > .modal__header { display: none; }
.kg-teacher-figure-modal .kg-label-editor-modal > .modal__body { flex: 1; min-height: 0; }
/* Design preview: show toolbar colors clearly while retaining disabled behavior. */
.kg-teacher-figure-modal .kg-label-editor-controls { --state-disabled-opacity: 1; }
.kg-label-editor-toolbar { display: grid; gap: var(--space-100); margin-bottom: var(--space-100); padding: var(--space-150); border: 1px solid var(--border-default); border-radius: var(--radius-md); background: var(--semantic-background-subtle); }
.kg-label-editor-status-row { display: flex; align-items: center; justify-content: space-between; gap: var(--space-150); }
.kg-label-editor-status { min-width: 0; font-size: 12px; line-height: 1.6; font-weight: var(--text-style-weight-medium); }
.kg-label-editor-actions, .kg-label-editor-tools-row { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-100); }
.kg-label-editor-actions { flex-shrink: 0; }
.kg-label-editor-toolbar .btn { min-width: 32px; white-space: nowrap; }
.kg-label-editor-tools-row { padding-top: var(--space-100); border-top: 1px solid var(--border-default); }
.kg-label-editor-selection-delete { position: absolute; z-index: 10; display: grid; place-items: center; width: 28px; height: 28px; padding: 0; border: 1px solid var(--semantic-text-danger); border-radius: 50%; background: var(--semantic-background-default); color: var(--semantic-text-danger); box-shadow: var(--shadow-sm); font: inherit; font-size: 20px; line-height: 1; transform: translate(-15%, -85%); cursor: pointer; }
.kg-label-editor-selection-delete:hover { background: var(--semantic-status-danger-soft-fill); }
.kg-label-editor-selection-delete:focus-visible { outline: 2px solid var(--border-focus); outline-offset: 2px; }
@media (max-width: 600px) { .kg-label-editor-status-row { flex-wrap: wrap; } .kg-label-editor-actions { margin-left: auto; } }
.kg-teacher-figure-modal .kg-label-editor-fig { max-height: 55dvh; }
.kg-teacher-figure-modal .kg-figure-workspace-side { height: 100%; min-height: 0; }
@media (max-width: 900px) {
  .kg-teacher-figure-modal { padding: var(--space-200); }
  .kg-teacher-figure-modal-content { display: flex; flex-direction: column; }
  .kg-teacher-figure-modal .kg-label-editor-modal { height: auto; max-height: none; }
  .kg-teacher-figure-modal .kg-figure-workspace-side { height: auto; min-height: 360px; }
}
.kg-teacher-review-complete { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-150); padding: var(--space-200); margin-bottom: var(--space-200); border: 1px solid var(--border-default); border-radius: var(--radius-md); background: var(--semantic-background-default); }
/* LibraryVariantJourney: preserve math reading width and source line breaks. */
.kg-library-review-page .kg-library-variant-status-item .kg-math { font-size: 16px; color: var(--text-primary); line-height: 1.85; white-space: pre-wrap; overflow-x: auto; }
.kg-library-review-page .kg-library-variant-status-item-head { flex-wrap: wrap; }
.kg-library-review-page .kg-library-variant-status-item .kg-library-solution-actions { flex-wrap: wrap; }
@media (max-width: 1200px) {
  .kg-library-review-page .kg-library-variant-status-body { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 1100px) {
  .kg-teacher-review-source-content, .kg-teacher-review-section { padding: var(--space-200); }
}
@media (max-width: 850px) {
  .kg-library-review-page .kg-library-variant-status-item .kg-library-review-comparison-columns { grid-template-columns: minmax(0, 1fr); }
  .kg-library-review-page .kg-library-variant-body { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 680px) {
  .kg-teacher-review { width: 100%; }
}
@media (max-width: 520px) {
  .kg-teacher-review-head, .kg-teacher-review-footer { padding: var(--space-150); }
  .kg-teacher-review-head h2 { font-size: 18px; }
  .kg-teacher-review-footer > .kg-teacher-review-actions { align-items: stretch; }
  .kg-teacher-review-footer .btn { flex: 1 0 auto; }
  .kg-teacher-review .kg-library-review-difficulty-options { gap: var(--space-100); }
}

.kg-variant-edit-figure { display: block; max-width: 100%; height: auto; }
.kg-library-problem-drawer:has(> .kg-teacher-review-footer) { grid-template-rows: auto minmax(0, 1fr) auto; }
.kg-library-problem-drawer-body:has(> .kg-teacher-review-comparison) { padding: 0; }
.kg-library-problem-drawer-body:has(> .kg-teacher-review-comparison) > .kg-library-problem-detail-section { padding: var(--space-250); }
@media (max-width: 680px) {
  .kg-library-problem-drawer-body > .kg-teacher-review-comparison { grid-template-columns: minmax(0, 1fr); }
}
.kg-library-problem-drawer-head > .kg-teacher-review-actions { display: flex; flex-wrap: nowrap; }
.kg-teacher-review-body > .kg-library-problem-detail-section { padding: var(--space-250); }

.kg-teacher-review-actions[role="radiogroup"] { flex-wrap: nowrap; gap: var(--space-250); }
.kg-teacher-review-actions[role="radiogroup"] > .radio { width: auto; flex: 0 0 auto; }

.kg-library-review-browse-actions { flex-direction: row; align-items: center; flex-wrap: wrap; }
.kg-library-review-browse-actions > .check { width: auto; flex: 0 0 auto; }