:root {
  --mock-ink: #153c42;
  --mock-accent: #126a65;
  --mock-line: #cbd7d5;
  --mock-paper: #fff;
  --mock-muted: #576968;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: #f4f6f4;
  color: #233a3d;
  font-family: "Hiragino Sans", "Yu Gothic", "Meiryo", system-ui, sans-serif;
}
button,
select,
input {
  font: inherit;
}
button,
.mock-button {
  display: inline-block;
  cursor: pointer;
  border: 1px solid var(--mock-line);
  border-radius: 8px;
  background: white;
  color: var(--mock-ink);
  padding: 11px 16px;
  text-decoration: none;
  min-height: 44px;
}
button:hover,
.mock-button:hover {
  background: #e6f2ef;
}
button:focus-visible,
a:focus-visible {
  outline: 3px solid #c18a2c;
  outline-offset: 3px;
}
button.primary {
  background: var(--mock-accent);
  color: white;
  border-color: var(--mock-accent);
}
button:disabled {
  cursor: default;
  opacity: 0.6;
}
.mock-header {
  padding: 18px 4vw;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--mock-line);
  background: white;
}
.mock-header a {
  color: var(--mock-ink);
  text-decoration: none;
}
.mock-header nav {
  display: flex;
  gap: 24px;
  font-size: 14px;
}
#app {
  max-width: 1380px;
  margin: 0 auto;
  padding: 36px 24px;
}
.intro {
  max-width: 900px;
  margin: 12px auto 34px;
}
.eyebrow {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mock-accent);
  font-weight: 700;
}
.intro h1 {
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.4;
  margin: 14px 0;
}
.intro p {
  line-height: 1.9;
  color: var(--mock-muted);
}
.exam-card,
.history-card,
.results {
  background: white;
  border: 1px solid var(--mock-line);
  border-radius: 14px;
  padding: 28px;
  max-width: 1000px;
  margin: 22px auto;
}
.exam-number {
  font-size: 14px;
  font-weight: 700;
  color: var(--mock-accent);
}
.exam-card h2 {
  font-size: 25px;
  margin: 10px 0;
}
.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
  margin: 16px 0;
}
.muted {
  color: var(--mock-muted);
  font-size: 14px;
}
.section-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
}
.section-grid button {
  font-size: 14px;
}
.catalog-page {
  max-width: 1000px;
  margin: 0 auto;
}
.catalog-intro {
  max-width: none;
  margin: 10px 0 28px;
}
.catalog-intro h1 {
  font-size: clamp(28px, 4vw, 40px);
}
.mode-choices {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 30px;
}
.mode-choice {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 24px;
  border-radius: 14px;
  text-align: left;
  line-height: 1.7;
}
.mode-choice strong {
  font-size: clamp(20px, 2.5vw, 25px);
  line-height: 1.5;
}
.mode-choice > span:last-child {
  font-size: 14px;
  color: var(--mock-muted);
}
.mode-choice .mode-meta {
  color: var(--mock-accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
}
.mode-choice::after {
  content: "";
  position: absolute;
  top: 22px;
  right: 22px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 1px solid var(--mock-line);
  background: white;
}
.mode-choice[aria-pressed="true"] {
  border-color: var(--mock-accent);
  box-shadow: inset 0 0 0 1px var(--mock-accent);
  background: #eaf4f0;
}
.mode-choice[aria-pressed="true"]::after {
  content: "✓";
  display: grid;
  place-content: center;
  color: white;
  background: var(--mock-accent);
  border-color: var(--mock-accent);
  font-size: 13px;
}
.section-picker {
  padding: 0 0 26px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--mock-line);
}
.section-picker h2,
.catalog-list-heading h2 {
  font-size: 21px;
  margin: 0 0 14px;
}
.section-picker [aria-pressed="true"] {
  background: var(--mock-ink);
  color: white;
  border-color: var(--mock-ink);
}
.catalog-list-heading {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 18px;
  margin-bottom: 16px;
}
.catalog-list-heading h2 {
  margin-bottom: 0;
}
.catalog-list-heading .eyebrow {
  margin: 0 0 5px;
}
.catalog-sort {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--mock-muted);
}
.catalog-sort select {
  min-height: 44px;
  border: 1px solid var(--mock-line);
  border-radius: 8px;
  padding: 8px 26px 8px 10px;
  color: var(--mock-ink);
  background: white;
}
.catalog-exam {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  margin: 12px 0;
  padding: 22px 26px;
}
.exam-card-title {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}
.exam-card-title h3 {
  margin: 0;
  font-size: 25px;
  font-variant-numeric: tabular-nums;
}
.exam-status {
  padding: 3px 10px;
  border-radius: 20px;
  color: var(--mock-muted);
  background: #f0f3f2;
  font-size: 12px;
  white-space: nowrap;
}
.exam-status.in-progress {
  background: #fff1d9;
  color: #785717;
}
.exam-status.completed {
  background: #e8f3ed;
  color: #32664c;
}
.catalog-exam p {
  margin: 7px 0 0;
  font-size: 14px;
  color: var(--mock-muted);
}
.exam-card-actions {
  margin: 0;
  flex-shrink: 0;
}
.time-options {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.pdf-links {
  display: grid;
  gap: 8px;
  margin-left: 10px;
}
.pdf-links a {
  color: var(--mock-accent);
  font-size: 13px;
  text-underline-offset: 4px;
  padding: 3px 0;
}
.pdf-links a:hover {
  color: var(--mock-ink);
}
@media (max-width: 600px) {
  .mode-choices {
    grid-template-columns: 1fr;
    gap: 10px;
    margin-bottom: 26px;
  }
  .mode-choice {
    padding: 18px 20px;
    gap: 5px;
  }
  .mode-choice::after {
    top: 18px;
    right: 18px;
  }
  .mode-choice strong {
    font-size: 21px;
  }
  .mode-choice > span:last-child {
    font-size: 13px;
  }
  .section-picker .section-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .section-picker .section-grid button {
    padding: 10px 6px;
  }
  .catalog-list-heading {
    align-items: start;
  }
  .catalog-sort {
    flex-direction: column;
    align-items: start;
    gap: 4px;
  }
  .catalog-exam {
    flex-wrap: wrap;
    gap: 15px;
  }
  .exam-card-actions {
    width: 100%;
    justify-content: space-between;
  }
  .exam-card-actions .primary {
    min-width: 100px;
  }
  .pdf-links {
    margin-left: auto;
  }
  .pdf-links a {
    min-height: 36px;
    display: flex;
    align-items: center;
  }
  .time-options {
    gap: 8px;
  }
  .time-options button {
    font-size: 14px;
    padding: 10px 12px;
  }
}
.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 242px;
  gap: 20px;
  align-items: start;
}
.book {
  min-width: 0;
}
.book iframe {
  display: block;
  width: 100%;
  border: 0;
  min-height: 600px;
  background: white;
}
.book-nav {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin: 0 0 14px;
}
.book-nav [aria-current="true"] {
  background: var(--mock-ink);
  color: white;
}
.sidebar {
  position: sticky;
  top: 12px;
  background: white;
  padding: 18px;
  border-radius: 12px;
  border: 1px solid var(--mock-line);
  max-height: 94vh;
  overflow: auto;
}
.timer {
  font-size: 30px;
  font-variant-numeric: tabular-nums;
  margin: 4px 0 14px;
  font-weight: 650;
}
.answer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 5px;
  margin-bottom: 15px;
}
.answer-grid button {
  min-width: 0;
  padding: 8px 3px;
  font-size: 12px;
  line-height: 1.6;
}
.answer-grid .answered {
  background: #e4f2ec;
  border-color: #6a9b88;
}
.answer-grid .flagged {
  box-shadow: inset 0 0 0 2px #b88620;
}
.sidebar h3 {
  font-size: 13px;
  margin: 12px 0 5px;
}
.sidebar > .actions {
  display: grid;
}
.topline {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.topline h1 {
  font-size: 22px;
  margin: 0;
}
.results table,
.history-card table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.results th,
.results td,
.history-card td,
.history-card th {
  border-bottom: 1px solid var(--mock-line);
  padding: 12px 8px;
  text-align: left;
}
.table-wrap {
  overflow: auto;
}
.correct {
  color: #126a45;
}
.incorrect {
  color: #a23731;
}
dialog {
  border: 1px solid var(--mock-line);
  border-radius: 12px;
  padding: 22px;
  max-width: 600px;
  width: calc(100% - 24px);
  max-height: 80dvh;
  overflow: auto;
  box-shadow: 0 20px 80px #183f4d33;
  color: var(--mock-ink);
}
dialog::backdrop {
  background: #203a4244;
}
dialog header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
dialog h2 {
  font-size: 19px;
  margin: 0 0 12px;
}
#answer-options {
  display: grid;
  gap: 8px;
}
#answer-options button {
  text-align: left;
}
.dialog-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 15px;
}
.keypad {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 7px;
}
.keypad button {
  text-align: center !important;
  font-size: 22px;
}
.key-display {
  font-size: 24px;
  min-height: 45px;
  border: 1px solid var(--mock-line);
  padding: 6px 12px;
}
#action-options {
  display: grid;
  gap: 12px;
  margin: 15px 0;
}
#notice {
  position: fixed;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 30;
  max-width: 90vw;
  background: #153c42;
  color: white;
  border-radius: 8px;
  padding: 10px 18px;
  box-shadow: 0 4px 20px #0002;
}
#notice:empty {
  display: none;
}
.error-note {
  padding: 12px;
  border: 2px solid #a23731;
  background: #fff4ef;
  color: #8b2722;
}
.history-card h2 {
  font-size: 21px;
}
.results details {
  margin: 18px 0;
}
.results summary {
  cursor: pointer;
  font-weight: 600;
}
.stat-note {
  padding: 14px;
  background: #f3f7f6;
  font-size: 13px;
  line-height: 1.7;
}
.answer-review {
  white-space: nowrap;
}
@media (max-width: 850px) {
  #app {
    padding: 20px 10px;
  }
  .workspace {
    display: flex;
    flex-direction: column;
  }
  .book {
    width: 100%;
    order: 2;
  }
  .sidebar {
    order: 1;
    position: relative;
    top: auto;
    width: 100%;
    max-height: none;
    padding: 10px 14px;
  }
  .sidebar details:not([open]) {
    margin: 0;
  }
  .timer {
    font-size: 22px;
    display: inline-block;
    margin: 0 16px 0 0;
  }
  .sidebar > .actions {
    display: flex;
    margin: 8px 0;
  }
  .sidebar .answer-grid {
    grid-template-columns: repeat(8, 1fr);
  }
  .sidebar > p {
    display: inline;
    font-size: 12px;
  }
  .section-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .exam-card,
  .history-card,
  .results {
    padding: 20px 15px;
  }
  .mock-header {
    padding: 14px 16px;
  }
  .mock-header nav {
    gap: 12px;
    font-size: 12px;
  }
  .topline {
    align-items: flex-start;
  }
  .topline h1 {
    font-size: 18px;
  }
  dialog#answer-dialog {
    position: fixed;
    top: auto;
    bottom: 0;
    margin: 0 auto;
    max-height: 48dvh;
    border-radius: 16px 16px 0 0;
    width: 100%;
  }
  .answer-grid button {
    font-size: 11px;
  }
  .results td {
    font-size: 12px;
  }
  .book-nav {
    position: sticky;
    top: 0;
    z-index: 3;
    background: #f4f6f4;
    padding: 5px 0;
  }
  .book-nav button {
    font-size: 13px;
    padding: 8px 10px;
  }
}
@media print {
  .mock-header,
  .sidebar,
  .book-nav,
  .topline,
  dialog,
  #notice {
    display: none;
  }
  #app {
    padding: 0;
    max-width: none;
  }
  .workspace {
    display: block;
  }
}
@media (max-width: 850px) {
  dialog#answer-dialog {
    padding: 12px 16px;
    max-height: 48dvh;
  }
  #answer-dialog header h2 {
    font-size: 16px;
    margin: 0;
  }
  #answer-dialog header button {
    min-height: 36px;
    padding: 3px 12px;
  }
  #answer-dialog header {
    margin-bottom: 6px;
  }
  #answer-options {
    gap: 5px;
  }
  .key-display {
    font-size: 20px;
    min-height: 34px;
    padding: 1px 10px;
  }
  .keypad {
    gap: 4px;
  }
  .keypad button {
    min-height: 36px;
    padding: 2px;
    font-size: 20px;
  }
  .dialog-actions {
    gap: 5px;
    margin-top: 8px;
  }
  .dialog-actions button,
  #answer-options > button {
    min-height: 36px;
    padding: 6px 10px;
    font-size: 13px;
  }
}
#figure-dialog {
  width: 95vw;
  max-width: 1100px;
  max-height: 90dvh;
}
.figure-stage {
  overflow: auto;
  max-height: 68dvh;
  max-width: 100%;
  background: white;
}
.figure-stage svg,
.figure-stage img {
  display: block;
  width: 1000px !important;
  min-width: 1000px !important;
  max-width: none !important;
  height: auto !important;
}
.mock-insert {
  font-family: monospace;
  color: #174e42;
  background: #edf5f0;
}
.site-footer {
  margin-top: 30px;
}
/* Compact input and result layouts, 2026-10-28. */
#answer-dialog.keypad-popup {
  position: fixed !important;
  margin: 0 !important;
  bottom: auto !important;
  right: auto !important;
  max-width: calc(100vw - 20px);
  padding: 12px;
  border-radius: 10px;
  z-index: 20;
  background: #fff;
}
#answer-dialog.keypad-popup header h2 {
  font-size: 15px;
  margin: 0;
}
#answer-dialog.keypad-popup header button {
  min-height: 30px;
  padding: 2px 10px;
}
#answer-dialog.keypad-popup .keypad button {
  min-height: 34px;
  padding: 3px;
  font-size: 19px;
  text-align: center;
}
#answer-dialog.keypad-popup .key-display {
  min-height: 32px;
  font-size: 20px;
  padding: 1px 8px;
}
#answer-dialog.keypad-popup .dialog-actions {
  margin-top: 8px;
  gap: 5px;
}
#confirm-answer {
  margin-left: auto;
}
#confirm-answer[hidden] {
  display: none;
}
#answer-dialog.keypad-popup .dialog-actions button,
#answer-dialog.keypad-popup #answer-options > button {
  font-size: 12px;
  min-height: 32px;
  padding: 4px 8px;
}
.section-navigation {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin: 12px 0;
}
.section-navigation button {
  padding: 7px 4px;
  font-size: 13px;
}
.section-navigation [aria-current="true"] {
  background: var(--mock-ink);
  color: white;
}
.book-next {
  display: flex;
  justify-content: flex-end;
  padding: 20px 0 30px;
}
.answer-grid button {
  white-space: nowrap;
  padding: 7px 1px;
  font-size: 12px;
  line-height: 1.5;
  min-height: 36px;
}
.result-heading,
.unit-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.result-heading h1 {
  margin: 0;
}
.unit-heading {
  margin-top: 28px;
  margin-bottom: 8px;
}
.unit-heading h2 {
  font-size: 19px;
  margin: 0;
}
button.subtle-danger {
  color: #a35c5b;
  background: #fff8f7;
  border-color: #eddbd9;
  font-size: 12px;
  padding: 6px 10px;
  min-height: 34px;
}
button.subtle-danger:hover {
  background: #fbe8e6;
}
button.subtle-button {
  font-size: 12px;
  padding: 6px 10px;
  min-height: 34px;
  color: var(--mock-muted);
  background: #fafcfb;
}
.result-actions .back-to-catalog {
  margin-left: 24px;
}
.result-actions #discard-result {
  margin-left: auto;
  white-space: nowrap;
}
.summary-block,
.unit-block {
  width: 100%;
  max-width: 760px;
}
.unit-block.expanded {
  max-width: none;
}
.results {
  max-width: 1080px;
}
.results .summary-table {
  max-width: 760px;
  font-size: 13px;
}
.results .summary-table th,
.results .summary-table td,
.results #unit-table th,
.results #unit-table td {
  border: 1px solid #aebbb9;
  text-align: center;
  padding: 6px 5px;
  vertical-align: middle;
  font-weight: 400;
  line-height: 1.5;
}
.results .summary-table thead th,
.results #unit-table thead th {
  background: #f1f5f4;
  font-weight: 600;
}
.results .summary-table tfoot {
  background: #f7f9f8;
}
.results #unit-table {
  font-size: 13px;
  width: 100%;
  max-width: 760px;
  table-layout: fixed;
}
.results #unit-table th:nth-child(1) {
  width: 90px;
}
.results #unit-table thead th:nth-child(2) {
  width: 45px;
}
.results #unit-table thead th:nth-child(3) {
  width: 54px;
}
.results #unit-table thead th:nth-child(5) {
  width: 48px;
}
.results #unit-table .your-answer {
  font-weight: 600;
}
.results #unit-table.with-history {
  width: max-content;
  max-width: none;
  table-layout: auto;
  min-width: 100%;
}
.results #unit-table.with-history th,
.results #unit-table.with-history td {
  min-width: 72px;
  white-space: nowrap;
}
.answer-symbol {
  display: inline-block;
  border: 1px solid #aab4b2;
  min-width: 2.2em;
  line-height: 1.25;
  background: white;
}
.partial {
  color: #91620b;
}
.score-footnote {
  font-size: 12px;
  margin-top: 6px;
}
@media (max-width: 850px) {
  .result-heading {
    align-items: flex-start;
  }
  .unit-heading {
    align-items: flex-start;
  }
  .results #unit-table {
    min-width: 560px;
  }
  .summary-table {
    min-width: 510px;
  }
  .section-navigation {
    grid-template-columns: repeat(5, 1fr);
  }
  .section-navigation button {
    font-size: 12px;
  }
  .result-actions .back-to-catalog {
    margin-left: 10px;
  }
}
@media print {
  .book-next,
  .section-navigation {
    display: none;
  }
}
.workspace.reading-layout {
  display: flex;
  flex-direction: column;
}
.reading-layout > .book {
  order: 1;
  width: 100%;
}
.explanation-panes {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}
.explanation-panes > section {
  min-width: 0;
}
.explanation-panes h2 {
  font-size: 18px;
  margin: 8px 0;
}
.explanation-panes iframe {
  width: 100%;
}
.reading-layout .book-nav:empty {
  display: none;
}
.reading-layout iframe {
  scroll-margin-top: 12px;
}

/* The exam toolbar and the two panes start on the same baseline. */
body[data-view="workspace"] > .site-header,
body[data-view="workspace"] > .preview-banner {
  display: none;
}
.workspace-toolbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}
.workspace-toolbar .book-nav {
  margin: 0;
}
.workspace-toolbar #back-list {
  flex-shrink: 0;
}
.catalog-history-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 24px;
}
.history-page {
  background: white;
  border: 1px solid var(--mock-line);
  border-radius: 14px;
  padding: 28px;
  max-width: 1180px;
  margin: 12px auto;
}
.history-page-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
}
.history-page-heading h1 {
  margin: 0;
  font-size: 28px;
}
.history-filters {
  display: flex;
  gap: 8px;
  margin: 24px 0 18px;
}
.history-filters [aria-pressed="true"] {
  background: var(--mock-ink);
  color: white;
}
.history-table {
  width: 100%;
  min-width: 860px;
  border-collapse: collapse;
  font-size: 13px;
}
.history-table th,
.history-table td {
  padding: 13px 9px;
  border: 1px solid var(--mock-line);
  text-align: center;
  line-height: 1.6;
}
.history-table thead th {
  background: #f1f5f4;
  font-weight: 600;
  white-space: nowrap;
}
.history-table tbody th {
  font-weight: 600;
  white-space: nowrap;
}
.history-row-actions {
  display: grid;
  grid-template-columns: 76px repeat(3, 52px);
  gap: 6px;
  width: max-content;
  margin: 0 auto;
}
.history-row-actions .action-placeholder {
  display: grid;
  place-items: center;
  color: #a1afac;
  min-height: 36px;
}
.history-table tbody tr:hover {
  background: #fafcfb;
}
.result-actions > button:not(.subtle-danger) {
  font-size: 13px;
  padding: 9px 12px;
}
.review-note {
  margin: 0 0 16px;
  padding: 10px 14px;
  border-left: 3px solid var(--mock-accent);
  background: #eaf3ef;
  color: var(--mock-ink);
  font-size: 13px;
  line-height: 1.7;
}
.history-row-actions button {
  font-size: 12px;
  padding: 6px 9px;
  min-height: 36px;
  white-space: nowrap;
}
.sample-label {
  display: block;
  margin: 4px auto 0;
  width: fit-content;
  font-size: 11px;
  color: #6b6f83;
  background: #f0eff8;
  padding: 1px 6px;
  border-radius: 4px;
}
@media (max-width: 850px) {
  .workspace-toolbar {
    position: sticky;
    top: 0;
    z-index: 6;
    background: #f4f6f4;
    padding: 5px 0;
    gap: 8px;
  }
  .workspace-toolbar.answering-toolbar {
    display: none;
  }
  .workspace-toolbar .book-nav {
    position: static;
    padding: 0;
  }
  .workspace-toolbar #back-list {
    font-size: 12px;
    padding: 8px 10px;
  }
  .history-page {
    padding: 20px 15px;
  }
  .history-page-heading {
    align-items: flex-start;
  }
  .history-page-heading h1 {
    font-size: 24px;
  }
  .history-page-heading button {
    font-size: 13px;
  }
}
.history-grid-tools {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 0 0 10px;
}
.history-row-count,
.history-time-note {
  color: var(--mock-muted);
  font-size: 12px;
  line-height: 1.7;
  margin: 0;
}
.history-time-note {
  margin-top: 10px;
}
.grid-reset {
  font-size: 12px;
  padding: 6px 10px;
  min-height: 34px;
}
.history-filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
}
.history-filter-chips:empty {
  display: none;
}
button.filter-chip {
  font-size: 12px;
  padding: 4px 9px;
  min-height: 30px;
  background: #eaf3ef;
}
.history-table thead th {
  padding: 0;
}
.history-table thead th:last-child {
  padding: 12px 9px;
}
.history-table thead button {
  width: 100%;
  border: 0;
  border-radius: 0;
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  gap: 7px;
  padding: 12px 26px;
  font-size: 13px;
  white-space: nowrap;
}
.history-table thead button:hover,
.history-table thead button.filtered {
  background: #deeee7;
}
.column-indicator {
  position: absolute;
  right: 9px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 11px;
  color: var(--mock-accent);
}

/* Reading controls scroll away with the page on every screen size. */
.workspace-toolbar.reading-toolbar {
  position: static;
  padding: 0;
  align-items: flex-start;
}
.reading-toolbar .book-nav {
  flex: 1;
}
.history-source {
  display: block;
  margin-top: 3px;
  font-size: 11px;
  color: var(--mock-muted);
}
#history-column-menu {
  position: fixed;
  margin: 0;
  right: auto;
  bottom: auto;
  padding: 16px;
  z-index: 70;
  background: white;
}
#history-column-menu h2 {
  font-size: 16px;
  margin: 0 0 10px;
}
.column-sort-actions,
.column-menu-actions {
  display: flex;
  gap: 8px;
}
.column-sort-actions button,
.column-menu-actions button {
  flex: 1;
  padding: 7px;
  min-height: 36px;
  font-size: 13px;
}
.column-sort-actions [aria-pressed="true"] {
  background: #eaf3ef;
  border-color: var(--mock-accent);
}
.column-range {
  margin: 12px 0;
  padding: 8px 0 0;
  border: 0;
  display: flex;
  align-items: center;
  gap: 6px;
}
.column-range legend {
  font-size: 12px;
  color: var(--mock-muted);
  padding: 0;
}
.column-range input {
  width: 0;
  flex: 1;
  min-width: 0;
  padding: 6px;
  font-size: 12px;
  border: 1px solid var(--mock-line);
  border-radius: 5px;
}
.column-search {
  width: 100%;
  margin: 12px 0 8px;
  min-height: 36px;
  border: 1px solid var(--mock-line);
  border-radius: 5px;
  padding: 6px 9px;
  font-size: 13px;
}
.column-select-all,
.column-value-list label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  padding: 6px 4px;
  cursor: pointer;
}
.column-select-all {
  border-bottom: 1px solid var(--mock-line);
}
.column-value-list {
  max-height: 185px;
  min-height: 40px;
  overflow: auto;
  padding: 4px 0;
  margin-bottom: 10px;
}
.column-value-list label:hover {
  background: #f0f6f3;
}
#history-column-menu input[type="checkbox"] {
  accent-color: var(--mock-accent);
}
.column-error {
  color: #a23731;
  font-size: 12px;
  margin: 0 0 8px;
}
.column-error:empty {
  display: none;
}
button.column-clear {
  border: 0;
  width: 100%;
  font-size: 12px;
  padding: 7px;
  min-height: 32px;
  color: var(--mock-muted);
  margin-top: 8px;
  text-decoration: underline;
}