:root {
  color-scheme: light;
  --bg: #f6f7f4;
  --surface: #ffffff;
  --surface-2: #eef3ee;
  --ink: #17211b;
  --muted: #68746d;
  --line: #dfe5df;
  --accent: #1d6f5a;
  --accent-2: #254f83;
  --warning: #b26b21;
  --shadow: 0 18px 48px rgba(24, 34, 29, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, "Segoe UI", "Microsoft YaHei", sans-serif;
  letter-spacing: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select {
  font: inherit;
}

.app-shell__topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 68px;
  padding: 0 28px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 250px;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  background: var(--accent);
  color: white;
  font-weight: 800;
  border-radius: 8px;
}

.brand strong,
.brand small {
  display: block;
}

.brand small,
.muted,
.paper-status,
.eyebrow {
  color: var(--muted);
}

.topnav {
  display: flex;
  gap: 6px;
  margin-right: auto;
}

.topnav a {
  padding: 10px 12px;
  border-radius: 8px;
  color: #33413a;
}

.topnav a:hover {
  background: var(--surface-2);
}

.account-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}

.account-chip strong {
  color: var(--accent-2);
}

.workspace-layout {
  display: grid;
  grid-template-columns: minmax(280px, 360px) minmax(0, 1fr);
  gap: 24px;
  width: min(1320px, calc(100vw - 40px));
  margin: 28px auto;
}

.sidebar,
.workspace-main,
.paper-card,
.empty-state {
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.sidebar {
  align-self: start;
  padding: 24px;
}

.sidebar h1,
.panel-header h2,
.paper-card h3,
.editor-main h2,
.right-rail h3 {
  margin: 0;
}

.eyebrow {
  margin: 0 0 8px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-top: 24px;
}

.metric-grid div {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
}

.metric-grid strong,
.metric-grid span {
  display: block;
}

.metric-grid strong {
  font-size: 20px;
}

.metric-grid span {
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
}

.workspace-main {
  padding: 24px;
}

.panel-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  margin-bottom: 14px;
}

.create-paper {
  display: grid;
  grid-template-columns: minmax(240px, 1fr) minmax(260px, 360px) auto;
  gap: 12px;
  align-items: end;
  margin-bottom: 32px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
}

.create-paper .form-wide {
  grid-column: 1 / -1;
}

label span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

input,
select,
textarea {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 9px 11px;
  background: white;
  color: var(--ink);
}

textarea {
  resize: vertical;
  line-height: 1.5;
}

button,
.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 9px 14px;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: white;
  cursor: pointer;
  font-weight: 750;
}

.ghost-button {
  border: 1px solid var(--line);
  background: white;
  color: var(--ink);
}

button:hover,
.button-link:hover {
  filter: brightness(0.96);
}

.paper-list {
  display: grid;
  gap: 12px;
}

.course-assignment-form {
  justify-content: flex-end;
  margin: 0;
  max-width: 640px;
  min-width: 0;
  width: min(100%, 640px);
}

.course-assignment-form input {
  min-width: 180px;
  flex: 1 1 180px;
}

.course-assignment-form button {
  flex: 0 0 auto;
}

.course-card-main {
  min-width: 0;
}

.course-actions-panel {
  display: grid;
  gap: 10px;
  width: min(100%, 680px);
}

.course-mini-list {
  display: grid;
  gap: 6px;
  margin-top: 12px;
}

.course-mini-list a {
  display: grid;
  gap: 2px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
}

.course-mini-list span {
  color: var(--muted);
  font-size: 12px;
}

.course-import-form {
  display: grid;
  gap: 8px;
  margin: 0;
}

.course-import-form textarea {
  min-height: 88px;
}

.course-admin-actions,
.course-row-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.course-admin-actions form,
.course-row-actions form {
  margin: 0;
}

.course-detail-page {
  display: block;
}

.course-brief {
  margin-bottom: 18px;
  text-align: left;
}

.course-brief p {
  margin-bottom: 0;
}

.course-start-form {
  margin-bottom: 24px;
}

.course-submission-table {
  display: grid;
  gap: 8px;
  margin-bottom: 28px;
}

.course-submission-row {
  display: grid;
  grid-template-columns: minmax(160px, 1.2fr) minmax(180px, 1.5fr) minmax(90px, 0.6fr) minmax(120px, 0.8fr) minmax(100px, 0.7fr) minmax(180px, 1fr);
  gap: 10px;
  align-items: center;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}

.course-submission-row.header {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.course-submission-row.overdue {
  border-left: 4px solid var(--warning);
}

.course-submission-row span {
  min-width: 0;
}

.course-submission-row strong,
.course-submission-row small {
  display: block;
  overflow-wrap: anywhere;
}

.course-submission-row small {
  color: var(--muted);
}

.course-timeline-header {
  margin-top: 28px;
}

.workspace-task-list {
  display: grid;
  gap: 10px;
  margin-bottom: 28px;
}

.workspace-progress-list {
  display: grid;
  gap: 10px;
  margin-bottom: 18px;
}

.workspace-progress-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}

.mentor-dashboard-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}

.mentor-dashboard-grid.wide {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.mentor-dashboard-grid article {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}

.mentor-dashboard-grid strong,
.mentor-dashboard-grid span {
  display: block;
}

.mentor-dashboard-grid span {
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
}

.workspace-progress-card h3 {
  margin: 3px 0;
  font-size: 16px;
}

.workspace-task-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent-2);
  border-radius: 8px;
  background: #fbfcfb;
}

.workspace-task-card.done {
  border-left-color: rgba(29, 111, 90, 0.45);
}

.workspace-task-card.unread {
  border-left-color: var(--warning);
}

.workspace-task-card.read {
  opacity: 0.72;
}

.workspace-task-card h3 {
  margin: 3px 0;
  font-size: 16px;
}

.compact-empty {
  margin-bottom: 28px;
  padding: 20px;
}

.notification-filter,
.mentor-filter,
.submission-actions,
.reference-exchange-actions,
.inline-form {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.notification-filter button,
.mentor-filter button {
  min-height: 34px;
  padding: 7px 10px;
  border: 1px solid var(--line);
  background: white;
  color: var(--ink);
}

.notification-filter button.active,
.mentor-filter button.active {
  background: var(--surface-2);
  color: var(--accent);
}

.mentor-page,
.settings-page,
.ops-page {
  width: min(1180px, calc(100vw - 40px));
  margin: 28px auto;
}

.mentor-board,
.settings-grid,
.ops-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 14px;
}

.mentor-rubric,
.mentor-paper-card,
.settings-card {
  display: grid;
  gap: 14px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  box-shadow: var(--shadow);
}

.mentor-rubric {
  align-content: start;
}

.mentor-rubric ul {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.mentor-rubric li {
  display: grid;
  gap: 3px;
}

.mentor-rubric span {
  color: var(--muted);
  font-size: 13px;
}

.template-chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.template-chip-list button {
  min-height: 30px;
  padding: 5px 8px;
}

.mentor-bulk-form {
  display: grid;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
}

.mentor-rubric-form {
  display: grid;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
}

.rubric-score-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.rubric-score-grid input {
  min-width: 0;
}

.settings-card code {
  display: block;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
  color: var(--accent-2);
  white-space: pre-wrap;
}

.settings-card.wide {
  grid-column: 1 / -1;
}

.inline-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.panel-header.compact {
  align-items: center;
  margin-bottom: 0;
}

.ops-status-strip {
  display: grid;
  grid-template-columns: minmax(220px, 1.4fr) repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 16px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  box-shadow: var(--shadow);
}

.ops-status-strip.attention {
  border-color: rgba(178, 107, 33, 0.38);
  background: #fffaf2;
}

.ops-status-strip > div {
  min-width: 0;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
}

.ops-status-strip strong,
.ops-status-strip span {
  display: block;
}

.ops-status-strip strong {
  overflow-wrap: anywhere;
}

.ops-status-strip span {
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
}

.ops-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 28px;
  padding: 5px 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f5faf7;
  color: var(--accent-2);
  font-size: 12px;
  font-weight: 800;
  white-space: nowrap;
}

.ops-pill.attention {
  border-color: rgba(178, 107, 33, 0.3);
  background: #fff7eb;
  color: #8a4d14;
}

.ops-table {
  display: grid;
  gap: 8px;
}

.ops-table > div {
  display: grid;
  grid-template-columns: minmax(180px, 0.9fr) minmax(140px, 0.8fr) minmax(0, 1.4fr);
  gap: 10px;
  align-items: center;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
}

.ops-table strong,
.ops-table span,
.ops-table p {
  min-width: 0;
  margin: 0;
  overflow-wrap: anywhere;
}

.ops-table span,
.ops-table p {
  color: var(--muted);
  font-size: 12px;
}

.settings-card pre,
.settings-result-card pre,
.reference-diff pre,
.asset-preview-card pre,
.background-job-card pre,
.archive-detail-card pre {
  max-height: 280px;
  margin: 0;
  overflow: auto;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
  color: var(--ink);
  font-size: 12px;
  line-height: 1.45;
  white-space: pre-wrap;
}

.prompt-template-list {
  display: grid;
  gap: 8px;
}

.prompt-template-row,
.settings-result-card,
.mentor-queue-card,
.asset-manifest-card,
.job-event-card {
  display: grid;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
}

.prompt-template-row {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
}

.prompt-template-row span,
.mentor-queue-card small,
.asset-manifest-card small,
.job-event-card small {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
}

.prompt-template-row.disabled {
  opacity: 0.72;
}

.settings-diff-panel,
.settings-diff-grid {
  display: grid;
  gap: 10px;
}

.settings-diff-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.settings-list {
  display: grid;
  gap: 8px;
  padding: 0;
  list-style: none;
}

.settings-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
}

.paper-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px;
  box-shadow: none;
}

.paper-card h3 {
  margin-top: 4px;
}

.paper-status {
  margin: 0;
  font-size: 13px;
}

.empty-state {
  padding: 34px;
  box-shadow: none;
  text-align: center;
}

.editor-shell {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr) 340px;
  min-height: calc(100vh - 68px);
}

.structure-pane,
.right-rail {
  position: sticky;
  top: 68px;
  height: calc(100vh - 68px);
  overflow: auto;
  border-right: 1px solid var(--line);
  background: #fbfcfb;
  padding: 22px;
}

.right-rail {
  border-right: 0;
  border-left: 1px solid var(--line);
}

.back-link {
  display: inline-flex;
  margin-bottom: 18px;
  color: var(--accent-2);
  font-weight: 750;
}

.structure-pane h1 {
  margin: 0 0 18px;
  font-size: 22px;
  line-height: 1.25;
}

.section-tree {
  display: grid;
  gap: 6px;
}

.section-tree a {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 8px;
  align-items: center;
  padding: 10px;
  border-radius: 8px;
  color: #33413a;
}

.section-tree a:hover,
.section-tree a.active {
  background: var(--surface-2);
}

.section-tree span {
  display: grid;
  width: 24px;
  height: 24px;
  place-items: center;
  border-radius: 6px;
  background: white;
  color: var(--accent-2);
  font-size: 12px;
  font-weight: 800;
}

.section-tools {
  display: grid;
  gap: 10px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.section-tools h2 {
  margin: 0;
  font-size: 15px;
}

.section-tool-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
}

.section-tool-grid .danger-button {
  grid-column: 1 / -1;
}

.section-progress-card {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.section-progress-card h2 {
  margin: 0 0 10px;
  font-size: 15px;
}

.section-progress-row {
  display: grid;
  width: 100%;
  gap: 3px;
  margin-bottom: 7px;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  color: var(--text);
  text-align: left;
}

.section-progress-row.attention {
  border-color: rgba(180, 56, 56, 0.24);
}

.section-progress-row span,
.section-progress-row small {
  min-width: 0;
  overflow-wrap: anywhere;
}

.section-progress-row small {
  color: var(--muted);
  font-size: 12px;
}

.danger-button {
  border-color: rgba(180, 56, 56, 0.28);
  color: #9c2f2f;
}

.editor-main {
  min-width: 0;
  padding: 24px 28px 80px;
}

.paper-toolbar {
  position: sticky;
  top: 68px;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin: -24px -28px 22px;
  padding: 18px 28px;
  border-bottom: 1px solid var(--line);
  background: rgba(246, 247, 244, 0.94);
  backdrop-filter: blur(14px);
}

.paper-toolbar h2 {
  color: #35443c;
  font-size: 16px;
}

.toolbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.save-state {
  min-width: 68px;
  color: var(--muted);
  font-size: 13px;
  text-align: right;
}

.save-state.pending {
  color: var(--warning);
}

.save-state.error {
  color: #b43838;
}

.section-stack {
  display: grid;
  gap: 18px;
  max-width: 900px;
  margin: 0 auto;
}

.section-editor {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  box-shadow: var(--shadow);
  scroll-margin-top: 150px;
}

.section-title {
  height: 54px;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 8px 8px 0 0;
  padding: 0 18px;
  font-size: 18px;
  font-weight: 800;
}

.editor-command-bar {
  display: flex;
  gap: 6px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--line);
  background: #fbfcfb;
}

.editor-command-bar button {
  width: 36px;
  min-height: 32px;
  padding: 4px;
  font-weight: 800;
}

.editable {
  min-height: 180px;
  padding: 18px;
  line-height: 1.7;
  outline: 0;
}

.pm-editor h1,
.pm-editor h2,
.pm-editor h3 {
  margin: 0 0 12px;
  line-height: 1.35;
}

.pm-editor h2 {
  font-size: 21px;
}

.pm-editor p {
  margin: 0 0 12px;
}

.pm-editor p:last-child {
  margin-bottom: 0;
}

.editable:focus {
  box-shadow: inset 0 0 0 2px rgba(29, 111, 90, 0.16);
}

.conflict-panel {
  border-top: 1px solid var(--line);
  padding: 14px;
}

.conflict-card {
  display: grid;
  gap: 10px;
  padding: 12px;
  border: 1px solid rgba(180, 56, 56, 0.28);
  border-radius: 8px;
  background: #fff8f8;
}

.conflict-preview {
  display: grid;
  gap: 6px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}

.conflict-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.rail-tabs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(76px, 1fr));
  gap: 6px;
  margin-bottom: 18px;
}

.rail-tabs button {
  min-height: 36px;
  padding: 6px;
  border: 1px solid var(--line);
  background: white;
  color: var(--muted);
  overflow-wrap: anywhere;
  text-align: center;
}

.rail-tabs button.active {
  border-color: rgba(29, 111, 90, 0.35);
  background: var(--surface-2);
  color: var(--accent);
}

.rail-panel {
  display: none;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}

.rail-panel.active {
  display: block;
}

.rail-panel p {
  color: var(--muted);
  line-height: 1.6;
}

.snapshot-list {
  display: grid;
  gap: 10px;
}

.snapshot-card,
.collaborator-list div,
.comment-card,
.reference-card,
.reference-health-card {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
}

.snapshot-card {
  display: grid;
  gap: 4px;
  width: 100%;
  min-height: auto;
  text-align: left;
  color: var(--ink);
}

.snapshot-card.active {
  border-color: rgba(29, 111, 90, 0.35);
  background: var(--surface-2);
}

.snapshot-list strong,
.snapshot-list span,
.collaborator-list strong,
.collaborator-list span {
  display: block;
}

.snapshot-list span,
.collaborator-list span {
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
}

.snapshot-detail {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.snapshot-detail-card,
.snapshot-diff-card {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
}

.snapshot-detail-card {
  display: grid;
  gap: 10px;
}

.snapshot-detail-card p {
  margin: 0;
}

.snapshot-detail-card small,
.snapshot-diff-card small {
  color: var(--muted);
  font-size: 13px;
}

.snapshot-diff-card {
  display: grid;
  gap: 8px;
}

.snapshot-diff-list {
  display: grid;
  gap: 8px;
}

.snapshot-change-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

.snapshot-change-tags span {
  padding: 4px 6px;
  border: 1px solid rgba(37, 79, 131, 0.18);
  border-radius: 6px;
  background: white;
  color: var(--accent-2);
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
}

.snapshot-compare-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.snapshot-compare-grid div {
  min-width: 0;
  padding: 9px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}

.snapshot-compare-grid strong {
  display: block;
  margin-bottom: 4px;
  color: var(--accent-2);
  font-size: 12px;
}

.snapshot-compare-grid p {
  max-height: 120px;
  overflow: auto;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.snapshot-diff-card.modified {
  border-color: rgba(178, 107, 33, 0.35);
}

.snapshot-diff-card.added_after_snapshot {
  border-color: rgba(37, 79, 131, 0.28);
}

.snapshot-diff-card.missing_current {
  border-color: rgba(180, 56, 56, 0.28);
}

.auth-layout {
  display: grid;
  grid-template-columns: minmax(280px, 460px) minmax(320px, 440px);
  gap: 36px;
  align-items: center;
  min-height: 100vh;
  width: min(1040px, calc(100vw - 32px));
  margin: 0 auto;
}

.auth-copy h2 {
  margin: 34px 0 14px;
  font-size: 38px;
  line-height: 1.12;
}

.auth-copy p {
  color: var(--muted);
  line-height: 1.7;
}

.auth-card {
  display: grid;
  gap: 16px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  box-shadow: var(--shadow);
}

.auth-card h1 {
  margin: 0;
}

.form-error {
  padding: 12px;
  border: 1px solid #e2aaaa;
  border-radius: 8px;
  background: #fff4f4;
  color: #9c2f2f;
}

.auth-switch,
.demo-note,
.form-hint {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.auth-switch a {
  color: var(--accent-2);
  font-weight: 800;
}

.invite-form {
  display: grid;
  gap: 12px;
  margin-bottom: 14px;
}

.comment-form,
.comment-reply-form,
.reference-form,
.ai-form,
.task-form,
.paper-settings-form {
  display: grid;
  gap: 10px;
  margin-bottom: 14px;
}

.paper-settings-form .checkbox-row,
.checkbox-row {
  display: flex;
  align-items: center;
  gap: 9px;
}

.paper-settings-form .checkbox-row input,
.checkbox-row input {
  width: auto;
}

.review-anchor-mark {
  padding: 1px 3px;
  border-radius: 4px;
  background: rgba(249, 196, 82, 0.34);
  cursor: pointer;
}

.review-anchor-chip {
  width: 100%;
  min-height: auto;
  padding: 6px 8px;
  border: 1px solid rgba(178, 107, 33, 0.26);
  background: #fff9ed;
  color: var(--warning);
  text-align: left;
  font-size: 12px;
}

.review-overview {
  margin-bottom: 14px;
}

.review-overview-card {
  display: grid;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
}

.review-flow {
  display: grid;
  gap: 8px;
  margin-bottom: 14px;
}

.review-flow-item {
  display: grid;
  justify-items: start;
  gap: 4px;
  width: 100%;
  min-height: auto;
  padding: 10px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent-2);
  background: #fbfcfb;
  color: var(--ink);
  text-align: left;
}

.review-flow-item span,
.review-flow-item small {
  color: var(--muted);
  font-size: 12px;
}

.feedback-cycle {
  display: grid;
  gap: 3px;
  padding: 9px;
  border: 1px solid rgba(37, 79, 131, 0.18);
  border-radius: 8px;
  background: white;
}

.feedback-cycle strong,
.feedback-cycle span {
  display: block;
}

.feedback-cycle span {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
}

.feedback-cycle.revision_requested,
.feedback-cycle.awaiting_recheck {
  border-color: rgba(178, 107, 33, 0.32);
}

.feedback-cycle.review_closed {
  border-color: rgba(29, 111, 90, 0.34);
}

.review-metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.review-metric-grid div {
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}

.review-metric-grid strong,
.review-metric-grid span {
  display: block;
}

.review-metric-grid span {
  margin-top: 2px;
  color: var(--muted);
  font-size: 11px;
}

.review-action-list {
  display: grid;
  gap: 7px;
}

.review-action-item {
  display: grid;
  gap: 3px;
  width: 100%;
  min-height: auto;
  padding: 9px;
  border: 1px solid rgba(178, 107, 33, 0.26);
  background: white;
  color: var(--ink);
  text-align: left;
}

.review-action-open {
  display: grid;
  justify-content: stretch;
  gap: 3px;
  min-height: auto;
  padding: 0;
  background: transparent;
  color: var(--ink);
  text-align: left;
}

.review-action-open:hover {
  filter: none;
}

.review-action-item strong,
.review-action-item span,
.review-action-item small,
.review-action-open strong,
.review-action-open span,
.review-action-open small {
  display: block;
}

.review-action-item span,
.review-action-item small,
.review-action-open span,
.review-action-open small {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
}

.review-task-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-top: 5px;
  padding-top: 7px;
  border-top: 1px solid var(--line);
}

.review-task-actions button {
  min-height: 30px;
  padding: 5px 9px;
}

.review-section-list {
  display: grid;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.review-section-list li {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  color: var(--muted);
  font-size: 12px;
}

.review-section-list strong {
  color: var(--accent-2);
}

.task-summary-card {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 14px;
}

.task-summary-card div {
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
}

.task-summary-card strong,
.task-summary-card span {
  display: block;
}

.task-summary-card span {
  color: var(--muted);
  font-size: 12px;
}

.task-filter {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 6px;
  margin-bottom: 10px;
}

.task-filter button {
  min-height: 34px;
  padding: 6px;
  border: 1px solid var(--line);
  background: white;
  color: var(--muted);
}

.task-filter button.active {
  border-color: rgba(29, 111, 90, 0.35);
  background: var(--surface-2);
  color: var(--accent);
}

.task-list {
  display: grid;
  gap: 8px;
}

.task-card {
  display: grid;
  gap: 8px;
  padding: 12px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent-2);
  border-radius: 8px;
  background: #fbfcfb;
}

.task-card.done {
  border-left-color: rgba(29, 111, 90, 0.45);
}

.task-card.overdue {
  border-left-color: #9c2f2f;
  background: #fff9f6;
}

.task-card p {
  margin: 0;
  color: var(--muted);
}

.task-card small {
  color: var(--muted);
}

.task-card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.task-card-actions button {
  min-height: 32px;
  padding: 5px 9px;
}

.plan-panel,
.quality-panel,
.submission-panel {
  display: grid;
  gap: 8px;
  margin-bottom: 14px;
}

.plan-card,
.quality-card,
.submission-card {
  display: grid;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
}

.quality-card.attention,
.submission-card:not(.ready) {
  border-color: rgba(178, 107, 33, 0.34);
}

.submission-card.ready {
  border-color: rgba(29, 111, 90, 0.34);
}

.submission-actions .button-link,
.submission-actions button {
  flex: 1 1 130px;
  justify-content: center;
  min-height: 34px;
}

.reference-exchange-actions .button-link {
  flex: 1 1 130px;
  justify-content: center;
  min-height: 34px;
}

.milestone-list {
  display: grid;
  gap: 7px;
}

.milestone-item {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  align-items: center;
  gap: 9px;
  min-height: 46px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  color: var(--ink);
  text-align: left;
}

.milestone-item:hover {
  filter: none;
  border-color: rgba(37, 79, 131, 0.28);
}

.milestone-item.doing {
  border-color: rgba(178, 107, 33, 0.36);
}

.milestone-item.done {
  border-color: rgba(29, 111, 90, 0.36);
  background: #f5faf7;
}

.milestone-step {
  display: grid;
  width: 26px;
  height: 26px;
  place-items: center;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--accent-2);
  font-size: 12px;
  font-weight: 800;
}

.milestone-item strong,
.milestone-item small {
  display: block;
}

.milestone-item small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.35;
}

.quality-card ul,
.submission-card ul {
  display: grid;
  gap: 6px;
  margin: 0;
  padding: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.4;
  list-style: none;
}

.quality-card li,
.submission-card li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.submission-next-action {
  display: grid;
  gap: 3px;
  padding: 10px;
  border: 1px solid rgba(178, 107, 33, 0.32);
  border-radius: 8px;
  background: #fffaf2;
}

.submission-next-action.ready {
  border-color: rgba(29, 111, 90, 0.34);
  background: #f5faf7;
}

.submission-next-action strong,
.submission-next-action span,
.submission-check-link strong,
.submission-check-link span {
  display: block;
}

.submission-next-action span,
.submission-check-link span {
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}

.submission-check-link {
  width: 100%;
}

.inline-link {
  min-height: auto;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  text-align: left;
  line-height: 1.4;
}

.inline-link:hover {
  filter: none;
  color: var(--accent-2);
}

.mini-button {
  min-height: 26px;
  padding: 3px 7px;
  font-size: 12px;
}

.submission-card li.passed {
  color: var(--accent);
  font-weight: 700;
}

.collaborator-list,
.comment-list,
.comment-replies,
.reference-list,
.ai-log-list,
.presence-list,
.operation-list,
.timeline-list {
  display: grid;
  gap: 8px;
}

.timeline-list {
  margin-bottom: 16px;
}

.compact-form {
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.comment-card p,
.comment-reply p,
.revision-link-item p,
.reference-card p,
.ai-result-card p,
.ai-log-card p,
.timeline-card p,
.operation-card p {
  margin: 6px 0 0;
  line-height: 1.5;
}

.reference-card small,
.reference-health-card small,
.ai-result-card small,
.ai-log-card small,
.timeline-card small,
.operation-card small {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  line-height: 1.4;
}

.reference-health {
  margin-top: 14px;
}

.reference-trace,
.reference-diff,
.reference-policy,
.asset-manifest,
.background-job-detail,
.asset-preview-panel,
.conflict-help-panel,
.mentor-queue-panel {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.reference-health-card {
  display: grid;
  gap: 10px;
}

.reference-health-card.attention,
.asset-manifest-card.attention,
.sync-status-card.attention,
.presence-card.attention {
  border-color: rgba(178, 107, 33, 0.35);
}

.reference-health-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.reference-health-grid div {
  padding: 8px;
  border-radius: 8px;
  background: white;
}

.reference-health-grid strong,
.reference-health-grid span {
  display: block;
}

.reference-health-grid span {
  margin-top: 2px;
  color: var(--muted);
  font-size: 11px;
}

.reference-health-card ul {
  display: grid;
  gap: 6px;
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.4;
}

.reference-health-card li span {
  color: var(--accent-2);
  font-weight: 800;
}

.source-ref-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.source-ref-chip {
  display: inline-flex;
  max-width: 100%;
  padding: 5px 7px;
  border: 1px solid rgba(37, 79, 131, 0.22);
  border-radius: 8px;
  background: #f6f9fb;
  color: var(--accent-2);
  font-size: 12px;
  font-weight: 800;
  line-height: 1.3;
}

.archive-card,
.asset-card,
.background-job-card,
.sync-status-card,
.presence-card,
.operation-card,
.timeline-card {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
}

.timeline-card {
  border-left: 4px solid var(--line);
}

.timeline-jump {
  width: 100%;
  min-height: 34px;
  margin-top: 10px;
  padding: 6px 10px;
}

.focus-flash {
  animation: focus-flash 2.2s ease-out;
}

@keyframes focus-flash {
  0% {
    box-shadow: 0 0 0 0 rgba(29, 111, 90, 0.36);
  }
  35% {
    box-shadow: 0 0 0 5px rgba(29, 111, 90, 0.18);
  }
  100% {
    box-shadow: inherit;
  }
}

.timeline-card.ai {
  border-left-color: var(--accent-2);
}

.timeline-card.reference {
  border-left-color: var(--accent);
}

.timeline-card.review {
  border-left-color: var(--warning);
}

.timeline-card.task {
  border-left-color: #6f5d1d;
}

.timeline-card.revision,
.timeline-card.snapshot {
  border-left-color: rgba(29, 111, 90, 0.45);
}

.presence-card strong,
.presence-card span {
  display: block;
}

.presence-card span {
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
}

.presence-card small,
.archive-card small,
.asset-card small,
.background-job-card small {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: 12px;
}

.archive-list {
  display: grid;
  gap: 8px;
  margin-bottom: 14px;
}

.asset-list,
.background-job-list {
  display: grid;
  gap: 8px;
}

.job-event-list {
  display: grid;
  gap: 8px;
  margin-top: 10px;
}

.job-event-card {
  box-shadow: none;
}

.job-event-card strong,
.job-event-card span {
  display: block;
}

.job-event-card span {
  color: var(--muted);
  font-size: 12px;
}

.asset-card.archived,
.background-job-card.canceled {
  opacity: 0.74;
}

.asset-thumb,
.asset-preview-image {
  width: 100%;
  max-height: 260px;
  object-fit: contain;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}

.asset-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
}

.asset-filter button {
  min-height: 32px;
  padding: 6px 10px;
}

.asset-filter button.active {
  border-color: rgba(29, 111, 90, 0.38);
  background: #e9f3ed;
  color: var(--accent);
}

.asset-thumb {
  width: 100%;
  max-height: 160px;
  margin: 8px 0;
  border-radius: 8px;
  object-fit: cover;
  border: 1px solid var(--line);
}

.asset-section-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 6px;
  margin-top: 8px;
}

.asset-preview-panel {
  margin-top: 12px;
}

.asset-preview-card {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
}

.asset-preview-card pre {
  max-height: 260px;
  overflow: auto;
  white-space: pre-wrap;
}

.asset-preview-image {
  width: 100%;
  max-height: 320px;
  border-radius: 8px;
  object-fit: contain;
  background: white;
  border: 1px solid var(--line);
}

.asset-link-list {
  display: grid;
  gap: 7px;
}

.asset-link-list .button-link {
  justify-content: flex-start;
  min-height: 34px;
}

.background-job-form {
  display: grid;
  gap: 10px;
  margin-bottom: 12px;
}

.background-job-card.completed,
.sync-status-card.ready {
  border-color: rgba(29, 111, 90, 0.34);
}

.background-job-card.failed,
.sync-status-card.attention {
  border-color: rgba(180, 56, 56, 0.28);
}

.comment-assign-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  margin-top: 10px;
}

.archive-detail,
.reference-duplicates,
.revision-response-panel {
  display: grid;
  gap: 8px;
  margin-bottom: 14px;
}

.archive-detail-card,
.reference-duplicate-card,
.revision-response-card {
  display: grid;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
}

.archive-detail-card pre {
  max-height: 220px;
  overflow: auto;
  margin: 0;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  white-space: pre-wrap;
  font-size: 12px;
}

.duplicate-group {
  display: grid;
  gap: 6px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}

.duplicate-group p,
.revision-response-card p {
  margin: 0;
  color: var(--ink);
  font-size: 13px;
  line-height: 1.45;
}

.revision-response-form {
  display: grid;
  gap: 8px;
}

.rewrite-diff {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.rewrite-diff div {
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}

.rewrite-diff p {
  margin: 6px 0 0;
  color: var(--ink);
  font-size: 13px;
}

.ai-output {
  display: grid;
  gap: 10px;
  margin-bottom: 14px;
}

.ai-provider-status {
  margin-bottom: 14px;
}

.ai-status-card {
  display: grid;
  gap: 4px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
}

.ai-status-card.ready {
  border-color: rgba(29, 111, 90, 0.35);
}

.ai-status-card.fallback {
  border-color: rgba(178, 107, 33, 0.35);
}

.ai-status-card span,
.ai-status-card small {
  color: var(--muted);
  font-size: 13px;
}

.workflow-panel {
  display: grid;
  gap: 8px;
  margin-top: 8px;
}

.workflow-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 10px;
  border: 1px solid rgba(29, 111, 90, 0.22);
  border-radius: 8px;
  background: #f5faf7;
}

.workflow-status.locked {
  border-color: rgba(178, 107, 33, 0.32);
  background: #fff8ef;
}

.workflow-status span {
  font-weight: 800;
}

.workflow-status small {
  color: var(--muted);
  font-size: 12px;
}

.workflow-actions,
.source-ref-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.source-ref-chip.active {
  border-color: rgba(29, 111, 90, 0.42);
  background: #edf8f2;
}

.ai-template-card,
.background-job-detail {
  display: grid;
  gap: 6px;
}

.ai-template-card {
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}

.ai-result-block,
.ai-log-card,
.ai-result-card,
.ai-image-card {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
}

.ai-result-block {
  display: grid;
  gap: 8px;
}

.ai-result-block ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.ai-result-block textarea {
  background: white;
}

.ai-apply-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.ai-apply-actions button {
  flex: 1 1 130px;
  min-height: 34px;
}

.ai-image-card {
  margin: 0;
}

.ai-image-card img {
  display: block;
  width: 100%;
  border-radius: 8px;
}

.ai-image-card figcaption {
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.citation-marker {
  color: var(--accent-2);
  font-weight: 800;
}

.comment-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.comment-meta span {
  color: var(--accent-2);
  font-size: 12px;
  font-weight: 800;
}

.comment-reply {
  margin-top: 10px;
  padding: 10px;
  border-left: 3px solid var(--line);
  background: white;
}

.asset-section-form textarea {
  min-height: 58px;
}

.asset-section-form input,
.asset-section-form textarea {
  margin-top: 6px;
}

.presence-card.attention {
  border-color: rgba(178, 107, 33, 0.32);
  background: #fff8ef;
}

.comment-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.revision-link-list {
  display: grid;
  gap: 8px;
  margin-top: 10px;
}

.revision-link-item {
  padding: 10px;
  border: 1px solid rgba(29, 111, 90, 0.22);
  border-radius: 8px;
  background: #f5faf7;
}

.revision-link-item strong,
.revision-link-item span {
  display: block;
}

.revision-link-item span {
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
}

input[readonly],
.editable:not([contenteditable="true"]) {
  background: #f7f8f6;
  color: #47534c;
}

@media (max-width: 1100px) {
  .workspace-layout,
  .editor-shell,
  .auth-layout {
    grid-template-columns: 1fr;
  }

  .structure-pane,
  .right-rail,
  .paper-toolbar {
    position: static;
    height: auto;
  }

  .create-paper {
    grid-template-columns: 1fr;
  }

  .prompt-template-row,
  .settings-diff-grid,
  .course-submission-row,
  .ops-status-strip,
  .ops-table > div {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .app-shell__topbar {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px;
  }

  .brand,
  .topnav,
  .account-chip {
    width: 100%;
  }

  .topnav {
    flex-wrap: wrap;
  }

  .workspace-layout,
  .ops-page,
  .settings-page,
  .mentor-page {
    width: calc(100vw - 24px);
    margin: 12px auto;
  }

  .paper-card,
  .paper-toolbar,
  .rewrite-diff {
    align-items: flex-start;
    flex-direction: column;
  }

  .course-actions-panel,
  .course-assignment-form {
    width: 100%;
  }

  .rewrite-diff {
    grid-template-columns: 1fr;
  }

  .editor-main {
    padding: 18px 12px 60px;
  }

  .paper-toolbar {
    margin: -18px -12px 18px;
    padding: 14px 12px;
  }
}