body {
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 20px;
  z-index: 1000;
  padding: 10px 16px;
  background: var(--bg-secondary);
}

.skip-link:focus {
  top: 10px;
}
.app-rail {
  width: 224px;
  position: fixed;
  inset: 0 auto 0 0;
  display: flex;
  flex-direction: column;
  padding: 24px 16px;
  border-right: 1px solid var(--border-color);
  background: var(--bg-primary);
  z-index: 30;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 0;
  background: none;
  color: var(--text-primary);
  font-size: 21px;
  letter-spacing: -0.05em;
  font-weight: 750;
  padding: 4px 10px;
  margin: 4px 0 32px;
}

.brand svg {
  width: 26px;
  height: 26px;
  color: #435ac7;
}
.mode-nav {
  display: grid;
  gap: 5px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
}
.rail-item {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  min-width: 0;
  border: 0;
  background: transparent;
  color: var(--text-primary);
  padding: 10px 12px;
  border-radius: 7px;
  font-weight: 500;
  font-size: 13px;
  text-align: left;
}

.rail-item span {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}
.rail-item:hover {
  background: var(--accent-soft);
}
.rail-item.selected {
  color: var(--accent);
  background: var(--accent-soft);
  font-weight: 650;
}
.rail-section-label {
  color: var(--text-secondary);
  padding: 22px 12px 10px;
  font-size: 11px;
}
.folder-list {
  overflow-y: auto;
  overflow-x: hidden;
  min-height: 70px;
}
.folder-row {
  display: flex;
  position: relative;
  align-items: center;
  padding-left: calc(var(--depth, 0) * 10px);
}
.folder-row .rail-item {
  padding-right: 22px;
  font-size: 12px;
}
.folder-row .row-menu {
  position: absolute;
  right: 0;
}
.folder-row .row-menu > summary {
  width: 24px;
  height: 28px;
  opacity: 0.5;
}
.folder-row:hover .row-menu > summary,
.folder-row:focus-within .row-menu > summary {
  opacity: 1;
}
.folder-row .popover-menu {
  position: fixed;
  top: auto;
  left: 20px;
  right: auto;
  width: 185px;
}
.new-folder {
  color: var(--accent);
  font-size: 12px;
  margin-top: 14px;
}
.rail-bottom {
  margin-top: auto;
  padding-top: 22px;
  border-top: 1px solid var(--border-color);
  display: grid;
  gap: 3px;
}
.rail-bottom .rail-item {
  font-size: 12px;
}
.app-main {
  margin-left: 224px;
  min-width: 0;
}
.mobile-topbar {
  display: none;
}
.rail-backdrop {
  display: none;
}
.rail-close {
  display: none;
}
.ws-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 550;
  line-height: 1.4;
  padding: 11px 16px;
  border: 1px solid transparent;
  border-radius: 7px;
  text-decoration: none;
  cursor: pointer;
  flex-shrink: 0;
  color: var(--text-primary);
  background: transparent;
}

.ws-button svg {
  width: 17px;
  height: 17px;
}
.ws-button.primary {
  background: #435ac7;
  color: white;
  border-color: #435ac7;
}
.ws-button.primary:hover {
  background: #344aaf;
  border-color: #344aaf;
}
.ws-button.secondary {
  background: var(--bg-secondary);
  border-color: var(--border-color);
  color: var(--text-secondary);
}
.ws-button.secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.ws-button.quiet {
  color: var(--accent);
}
.ws-button.quiet:hover {
  background: var(--accent-soft);
}
.ws-button.small {
  font-size: 12px;
  padding: 8px 11px;
}
.ws-button.danger,
.danger {
  color: #c13b4c;
}
.ws-button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: 6px;
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  font-size: 18px;
  cursor: pointer;
  list-style: none;
}

.icon-button::-webkit-details-marker {
  display: none;
}
.icon-button:hover {
  color: var(--accent);
  border-color: var(--accent);
}
.app-rail .rail-close {
  display: none;
}
.ws-button.rail-item {
  justify-content: flex-start;
}
.library-home {
  max-width: 1600px;
  margin: 0 auto;
  padding: 24px 32px 28px;
}
.home-toolbar {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  align-items: center;
  min-height: 40px;
  margin-bottom: 28px;
}
.home-heading h1 {
  font-size: 30px;
  line-height: 1.25;
  font-weight: 720;
  letter-spacing: -0.045em;
  margin-bottom: 8px;
}
.home-heading > p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}
.drop-zone {
  position: relative;
  min-height: 164px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  padding: 24px 18px;
  border: 1px dashed #b0bde9;
  border-radius: 9px;
  margin-bottom: 24px;
  transition:
    background 0.15s,
    border-color 0.15s;
}

.drop-zone.dragging {
  background: var(--accent-soft);
  border-color: var(--accent);
  outline: 3px solid var(--accent-soft);
}
.drop-zone[aria-busy="true"] {
  opacity: 0.6;
}
.drop-icon {
  color: var(--accent);
  display: block;
  margin-bottom: 6px;
}
.drop-icon svg {
  width: 27px;
  height: 27px;
}
.drop-zone > strong {
  font-size: 14px;
  font-weight: 650;
}
.browse-link {
  border: 0;
  background: none;
  padding: 0;
  font-size: 13px;
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.drop-zone > p {
  color: var(--text-secondary);
  font-size: 12px;
  margin: 6px 0 0;
}
.paste-import {
  position: absolute;
  bottom: 14px;
  right: 16px;
}
.library-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.library-tabs {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 4px;
  background: var(--bg-secondary);
}
.library-tabs button {
  border: 0;
  border-radius: 5px;
  padding: 9px 14px;
  color: var(--text-secondary);
  font-size: 12px;
  background: none;
  white-space: nowrap;
}
.library-tabs button.selected {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 650;
}
.library-search {
  min-width: 210px;
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--bg-secondary);
  padding: 0 11px;
  height: 43px;
  color: var(--text-secondary);
}
.library-search:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.library-search svg {
  width: 16px;
  height: 16px;
}
.library-search input {
  min-width: 0;
  width: 100%;
  border: 0;
  outline: none;
  background: transparent;
  color: var(--text-primary);
  padding: 9px 0;
  font-size: 12px;
}
.library-search input::placeholder {
  color: var(--text-secondary);
  opacity: 1;
}
.library-search kbd {
  font-size: 9px;
  color: var(--text-secondary);
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  white-space: nowrap;
  padding: 2px 4px;
  border-radius: 4px;
}
.filter-panel {
  position: relative;
}
.filter-panel > summary {
  list-style: none;
  font-size: 12px;
  min-height: 43px;
}
.filter-panel > summary::-webkit-details-marker {
  display: none;
}
.filter-popover {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  width: 260px;
  z-index: 35;
  display: grid;
  gap: 16px;
  padding: 20px;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  box-shadow: 0 8px 28px #10182815;
  background: var(--bg-secondary);
}
.sort-control .form-select,
.view-control .form-select {
  height: 43px;
  font-size: 12px;
  width: auto;
  padding-left: 12px;
  border-radius: 8px;
}
.view-control {
  display: block;
}
.library-context {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 52px;
  padding: 10px 0;
}
.library-context > .muted-small {
  margin-left: auto;
  white-space: nowrap;
  font-size: 11px;
}
.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.filter-chip {
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 11px;
  padding: 4px 9px;
  border-radius: 16px;
}
.filter-chip svg {
  width: 12px;
  height: 12px;
  order: 1;
}
.library-table {
  border: 1px solid var(--border-color);
  border-radius: 10px;
  background: var(--bg-secondary);
}
.list-header,
.material-row {
  display: grid;
  grid-template-columns: 16px 34px minmax(180px, 2fr) minmax(110px, 1fr) minmax(
      110px,
      1.1fr
    ) auto;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
}
.list-header {
  background: var(--bg-primary);
  border-radius: 10px 10px 0 0;
  font-size: 11px;
  color: var(--text-secondary);
}
.material-row {
  min-height: 88px;
  border-top: 1px solid var(--border-color);
  position: relative;
}
.material-row:not(:has(> input)) {
  grid-template-columns: 34px minmax(180px, 2fr) minmax(110px, 1fr) minmax(
      110px,
      1.1fr
    ) auto;
}
.material-row:first-child {
  border-top: 0;
}
.list-header:not([hidden]) + #materialRows .material-row:first-child {
  border-top: 1px solid var(--border-color);
}
.material-row > input,
.list-header > input {
  width: 14px;
  height: 14px;
  accent-color: var(--accent);
}
.material-row:has(> input:checked) {
  background: var(--accent-soft);
}
.material-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 38px;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent);
}
.material-icon svg {
  width: 20px;
  height: 20px;
}
.material-main {
  min-width: 0;
}
.material-title {
  display: block;
  max-width: 100%;
  text-align: left;
  padding: 0;
  border: 0;
  background: none;
  color: var(--text-primary);
  font-size: 15px;
  font-weight: 650;
  line-height: 1.4;
  overflow-wrap: anywhere;
}
.material-title:hover {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.material-main .muted-small {
  margin-top: 5px;
  font-size: 12px;
}
.material-folder {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--text-secondary);
  font-size: 11px;
  min-width: 0;
}
.material-folder svg {
  width: 15px;
  height: 15px;
}
.material-folder span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.tag-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 5px;
  min-width: 0;
}
.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  max-width: 100%;
  padding: 3px 7px;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 5px;
  font-size: 10px;
  line-height: 1.4;
}
.tag-chip span {
  overflow: hidden;
  text-overflow: ellipsis;
}
.source-tag {
  background: var(--bg-primary);
  color: var(--text-secondary);
}
.source-tag svg {
  width: 10px;
  height: 10px;
}
.material-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  justify-content: flex-end;
}
.material-actions > .ws-button {
  white-space: nowrap;
  font-size: 13px;
}
.row-menu {
  position: relative;
}
.row-menu > summary {
  border: 0;
  background: transparent;
}
.row-menu > summary svg {
  width: 19px;
  height: 19px;
}
.row-menu[open] {
  z-index: 25;
}
.popover-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 4px);
  z-index: 35;
  min-width: 190px;
  padding: 5px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: 0 8px 25px #10182820;
}
.ws-button.menu-item {
  display: flex;
  width: 100%;
  justify-content: flex-start;
  font-size: 12px;
  padding: 10px 12px;
  border: 0;
  background: none;
  text-align: left;
}
.ws-button.menu-item:hover {
  background: var(--bg-primary);
}
.library-empty {
  padding: 48px 24px;
  text-align: center;
}
.library-empty > svg {
  width: 30px;
  height: 30px;
  color: var(--accent);
  margin-bottom: 15px;
}
.library-empty h3 {
  font-size: 18px;
  font-weight: 650;
}
.library-empty .ws-button {
  margin: 4px;
}
.library-footnote {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  margin-top: 18px;
  color: var(--text-secondary);
  font-size: 10px;
}
.library-footnote .ws-button {
  font-size: 10px;
}
.search-snippet {
  font-size: 10px;
  color: var(--text-secondary);
  margin-top: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.bulk-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 12px;
  padding: 10px 14px;
  flex-wrap: wrap;
}
.bulk-bar strong {
  font-size: 12px;
  margin-right: auto;
}
.continue-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  border-left: 3px solid var(--accent);
  background: var(--bg-secondary);
  padding: 12px 16px;
  border-radius: 7px;
  margin: -6px 0 20px;
}
.continue-bar > div {
  min-width: 0;
}
.continue-bar strong {
  display: block;
  font-size: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.continue-bar .muted-small {
  font-size: 10px;
}
.grid-view #materialRows {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
  padding: 14px;
}
.grid-view .material-row {
  display: flex;
  flex-wrap: wrap;
  border: 1px solid var(--border-color);
  padding: 18px;
  border-radius: 8px;
  gap: 12px;
}
.grid-view .material-main {
  flex-basis: calc(100% - 90px);
  flex-grow: 1;
}
.grid-view .material-folder,
.grid-view .tag-list {
  flex-basis: 100%;
}
.grid-view .material-actions {
  flex: 1;
  justify-content: space-between;
  margin-top: 6px;
}
.app-notice {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  margin: 16px 32px 0;
  font-size: 12px;
}
.app-notice > span {
  flex: 1;
}
.notice-close {
  color: var(--text-secondary);
  background: none;
  border: 0;
  font-size: 19px;
  line-height: 1.2;
  padding: 0 3px;
}
.dialog-fields {
  display: grid;
  gap: 18px;
}
.ws-field {
  display: grid;
  gap: 8px;
  min-width: 0;
}
.field-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
}
.ws-field .form-control,
.ws-field .form-select {
  font-size: 13px;
  min-height: 42px;
}
.library-dialog {
  max-width: 600px;
  width: calc(100% - 32px);
  max-height: calc(100dvh - 48px);
  padding: 0;
}
.library-dialog form {
  display: flex;
  flex-direction: column;
  max-height: calc(100dvh - 50px);
}
.dialog-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  padding: 22px 24px;
  flex-shrink: 0;
}
.dialog-heading h2 {
  margin: 0;
  font-size: 20px;
  font-weight: 650;
  overflow-wrap: anywhere;
}
.dialog-heading > .icon-button {
  border: 0;
}
.dialog-body {
  padding: 0 24px 24px;
  overflow-y: auto;
  min-height: 0;
  overscroll-behavior: contain;
}
.dialog-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin: 0;
  padding: 16px 24px;
  border-top: 1px solid var(--border-color);
  flex-shrink: 0;
}
#libraryDialogError {
  font-size: 12px;
  margin: 0 24px;
}
#libraryDialogError:empty {
  display: none;
}
#libraryDialogError:not(:empty) {
  padding-bottom: 14px;
}
.source-preview {
  font-family: ui-monospace, monospace;
  font-size: 12px;
}
.setup-facts {
  display: flex;
  justify-content: space-between;
  padding: 18px;
  border-radius: 8px;
  background: var(--bg-primary);
}
.setup-facts strong {
  font-size: 14px;
}
.setup-facts > span {
  color: var(--text-secondary);
  font-size: 13px;
}
.setup-advanced {
  border-top: 1px solid var(--border-color);
  padding-top: 16px;
}
.preview-question-list {
  max-height: 40vh;
  overflow-y: auto;
  padding-left: 23px;
  font-size: 13px;
}
.preview-question-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--border-color);
}
.preview-question-list small {
  display: block;
  margin-top: 5px;
}
.utility-page {
  padding: 32px;
  max-width: 1000px;
  margin: 0 auto;
}
.utility-page h1 {
  font-size: 28px;
  font-weight: 700;
}
.utility-page .page-heading {
  margin-top: 24px;
}
.utility-page .card {
  box-shadow: none;
}
.settings-group {
  padding: 24px 0;
  border-top: 1px solid var(--border-color);
}
.settings-group h2 {
  font-size: 17px;
  margin-bottom: 16px;
}
.schema-preview {
  max-height: 450px;
  overflow: auto;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 16px;
}
body[data-screen="test-area"] .app-rail,
body[data-screen="visual"] .app-rail,
body[data-screen="results"] .app-rail {
  display: none;
}
body[data-screen="test-area"] .app-main,
body[data-screen="visual"] .app-main,
body[data-screen="results"] .app-main {
  margin-left: 0;
}
.focus-header {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 16px 24px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  min-height: 70px;
}
.focus-header > strong {
  font-size: 15px;
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.runner-header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
}
.runner-header-actions .timer {
  font-size: 13px;
  min-width: 70px;
  text-align: center;
}
.runner-body {
  display: grid;
  grid-template-columns: 220px minmax(0, 780px);
  justify-content: center;
  gap: 40px;
  padding: 40px 32px;
  max-width: 1200px;
  margin: 0 auto;
}
.runner-outline {
  padding-top: 12px;
  min-width: 0;
}
.runner-outline > .muted-small {
  display: none;
}
.runner-outline summary {
  color: var(--text-primary);
  font-size: 13px;
}
.runner-outline .question-grid {
  margin: 20px 0 30px;
}
.runner-outline .q-index {
  height: 36px;
  font-size: 12px;
}
.test-panel {
  padding: 36px;
  min-height: 450px;
}
.test-panel .question-area {
  min-height: 230px;
}
.test-panel .h4 {
  font-size: 21px;
  font-weight: 650;
}
.test-panel .question-prompt {
  font-size: 18px;
  line-height: 1.65;
}
.test-panel .choice-row {
  font-size: 14px;
}
.test-panel #saveStatus {
  font-size: 10px;
}
.review-content {
  max-width: 900px;
  padding: 32px;
  margin: 0 auto;
}
.review-content .result-score {
  font-size: 24px;
}
.visual-screen {
  width: 100%;
}
.sv-shell {
  border: 0;
  border-radius: 0;
}
.sv-layout {
  height: calc(100dvh - 90px);
  max-height: none;
}
body[data-screen="visual"] .app-notice {
  position: relative;
  z-index: 10;
}
.grading main button,
.grading main input,
.grading main textarea,
.grading .app-rail {
  pointer-events: none;
}
@media (min-width: 1550px) {
  .view-control {
    display: block;
  }
  .library-home {
    padding-left: 48px;
    padding-right: 48px;
  }
}

@media (max-width: 1190px) {
  .app-rail {
    width: 204px;
    padding-left: 12px;
    padding-right: 12px;
  }
  .app-main {
    margin-left: 204px;
  }
  .brand {
    font-size: 19px;
  }
  .library-home {
    padding: 22px 24px;
  }
  .material-row,
  .list-header {
    grid-template-columns: 14px 32px minmax(150px, 1fr) minmax(
        100px,
        0.6fr
      ) auto;
    gap: 12px;
    padding-left: 16px;
    padding-right: 16px;
  }
  .material-row:not(:has(> input)) {
    grid-template-columns: 32px minmax(150px, 1fr) minmax(100px, 0.6fr) auto;
  }
  .material-row > .tag-list {
    display: none;
  }
  .list-header > span:nth-child(5) {
    display: none;
  }
  .library-tabs {
    flex-grow: 1;
    justify-content: stretch;
  }
  .library-tabs > button {
    flex: 1;
  }
  .library-search {
    order: 2;
    flex-basis: calc(100% - 260px);
  }
  .filter-panel {
    order: 3;
  }
  .sort-control {
    order: 4;
  }
  .view-control {
    order: 5;
  }
  .runner-body {
    gap: 24px;
    grid-template-columns: 180px minmax(0, 1fr);
  }
}

@media (max-width: 850px) {
  .app-rail {
    width: 190px;
    padding: 20px 10px;
  }
  .brand {
    font-size: 18px;
    padding-left: 6px;
    gap: 8px;
  }
  .app-main {
    margin-left: 190px;
  }
  .library-home {
    padding: 20px;
  }
  .home-heading h1 {
    font-size: 27px;
  }
  .home-heading > p {
    font-size: 13px;
  }
  .material-folder {
    display: none;
  }
  .material-row,
  .list-header {
    grid-template-columns: 14px 30px minmax(120px, 1fr) auto;
  }
  .material-row:not(:has(> input)) {
    grid-template-columns: 30px minmax(120px, 1fr) auto;
  }
  .list-header > span:nth-child(4) {
    display: none;
  }
  .home-toolbar {
    margin-bottom: 24px;
  }
  .sort-control {
    flex-grow: 1;
  }
  .sort-control .form-select {
    width: 100%;
  }
  .runner-header-actions {
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 6px;
  }
  .focus-header {
    gap: 12px;
    padding: 12px 16px;
  }
  .focus-header > strong {
    max-width: 200px;
    font-size: 13px;
  }
  .runner-body {
    grid-template-columns: 1fr;
    padding: 24px;
    max-width: 780px;
    gap: 18px;
  }
  .runner-outline {
    display: flex;
    align-items: flex-start;
    gap: 24px;
    padding: 0;
  }
  .runner-outline details {
    flex: 1;
  }
  .runner-outline #progressContainer {
    min-width: 160px;
    flex: 1;
    padding-top: 8px;
  }
  .runner-outline .question-grid {
    margin: 12px 0 0;
    grid-template-columns: repeat(auto-fill, minmax(30px, 1fr));
  }
}

@media (max-width: 680px) {
  .app-rail {
    width: 252px;
    transform: translateX(-100%);
    visibility: hidden;
    transition: transform 0.18s;
    padding: 24px 16px;
    z-index: 70;
  }
  .app-main {
    margin-left: 0;
  }
  .rail-open .app-rail {
    transform: none;
    visibility: visible;
  }
  .app-rail .rail-close {
    display: inline-flex;
    position: absolute;
    right: 15px;
    top: 17px;
    width: 28px;
    height: 28px;
  }
  .app-rail .brand {
    margin-top: 35px;
  }
  .rail-open .rail-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    border: 0;
    background: #10182866;
    z-index: 65;
  }
  .rail-open {
    overflow: hidden;
  }
  .mobile-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
  }
  .mobile-topbar > span {
    font-size: 17px;
    font-weight: 700;
    margin-right: auto;
    letter-spacing: -0.04em;
  }
  .mobile-topbar > .ws-button {
    font-size: 11px;
  }
  .home-toolbar {
    margin-bottom: 22px;
    min-height: 36px;
  }
  .home-toolbar > .ws-button {
    font-size: 11px;
    padding: 9px 11px;
  }
  .library-home {
    padding: 18px 16px;
  }
  .home-heading h1 {
    font-size: 27px;
  }
  .home-heading > p {
    font-size: 13px;
    margin-bottom: 22px;
  }
  .drop-zone {
    min-height: 166px;
    padding: 20px 12px 38px;
    margin-bottom: 20px;
  }
  .drop-zone > strong {
    font-size: 13px;
  }
  .drop-zone > p {
    font-size: 10px;
  }
  .drop-icon svg {
    width: 24px;
    height: 24px;
  }
  .paste-import {
    bottom: 5px;
    right: 50%;
    transform: translateX(50%);
    font-size: 10px !important;
    padding: 5px !important;
  }
  .library-tabs {
    flex-basis: 100%;
  }
  .library-tabs button {
    font-size: 11px;
    padding: 8px 10px;
  }
  .library-search {
    flex-basis: 100%;
    order: 1;
    min-width: 0;
  }
  .library-search kbd {
    display: none;
  }
  .filter-panel {
    order: 2;
  }
  .sort-control {
    order: 3;
  }
  .view-control {
    display: block;
    order: 4;
  }
  .filter-panel > summary {
    font-size: 11px;
    min-height: 38px;
    padding: 9px 11px;
  }
  .sort-control .form-select,
  .view-control .form-select {
    height: 38px;
    font-size: 11px;
  }
  .filter-popover {
    position: fixed;
    top: auto;
    bottom: 16px;
    left: 16px;
    right: 16px;
    width: auto;
    z-index: 60;
    box-shadow: 0 -10px 100px #10182840;
    padding: 24px;
  }
  .library-context {
    min-height: 44px;
    flex-wrap: wrap;
  }
  .library-context > .muted-small {
    font-size: 10px;
  }
  .list-header {
    display: none !important;
  }
  .material-row {
    grid-template-columns: 15px 30px minmax(0, 1fr) 28px;
    align-items: start;
    gap: 10px;
    padding: 17px 14px;
  }
  .material-icon {
    width: 30px;
    height: 34px;
  }
  .material-title {
    font-size: 13px;
    line-height: 1.45;
  }
  .material-main .muted-small {
    font-size: 11px;
  }
  .material-row > .tag-list {
    display: flex;
    grid-column: 3 / 5;
  }
  .material-row > .material-folder {
    display: none;
  }
  .material-actions {
    display: contents;
  }
  .material-actions > .ws-button {
    grid-column: 3 / 5;
    justify-self: start;
    margin-top: 4px;
    font-size: 12px;
    padding: 9px 12px;
    min-height: 38px;
  }
  .material-actions > .row-menu {
    grid-column: 4;
    grid-row: 1;
    justify-self: end;
  }
  .material-actions > .ws-button.quiet {
    grid-column: 4;
    grid-row: 3;
    font-size: 10px;
    padding: 7px 0;
  }
  .material-row:not(:has(> input)) {
    grid-template-columns: 30px minmax(0, 1fr) 28px;
  }
  .material-row:not(:has(> input)) > .tag-list {
    grid-column: 2 / 4;
  }
  .material-row:not(:has(> input)) .material-actions > .ws-button.primary {
    grid-column: 2;
  }
  .material-row:not(:has(> input)) .material-actions > .ws-button.quiet {
    grid-column: 3;
  }
  .grid-view #materialRows {
    display: flex;
    flex-direction: column;
    padding: 0;
    gap: 0;
  }
  .grid-view .material-row {
    border: 0;
    border-top: 1px solid var(--border-color);
    border-radius: 0;
  }
  .grid-view .material-actions {
    display: flex;
  }
  .grid-view .material-main {
    flex-basis: calc(100% - 80px);
  }
  .library-footnote {
    flex-direction: column;
    gap: 5px;
    font-size: 9px;
  }
  .library-empty {
    padding: 36px 18px;
  }
  .library-empty h3 {
    font-size: 17px;
  }
  .library-empty > .muted-small {
    font-size: 12px;
  }
  .library-empty > .ws-button {
    font-size: 12px;
  }
  .continue-bar {
    padding: 11px;
    gap: 10px;
  }
  .continue-bar .ws-button {
    font-size: 10px;
    padding: 8px;
  }
  .app-notice {
    margin: 12px 16px 0;
    font-size: 11px;
  }
  .library-dialog {
    width: calc(100% - 20px);
    max-height: calc(100dvh - 20px);
  }
  .library-dialog form {
    max-height: calc(100dvh - 22px);
  }
  .dialog-heading {
    padding: 20px;
  }
  .dialog-heading h2 {
    font-size: 19px;
  }
  .dialog-body {
    padding: 0 20px 20px;
  }
  .dialog-footer {
    padding: 14px 20px;
  }
  .dialog-footer .ws-button {
    flex: 1;
    font-size: 12px;
  }
  .utility-page {
    padding: 20px 16px;
  }
  .utility-page h1 {
    font-size: 25px;
  }
  .utility-page .card {
    padding: 20px !important;
  }
  .utility-page .form-select {
    font-size: 12px;
  }
  .utility-page .action-group .btn {
    font-size: 12px;
  }
  body[data-screen="test-area"] .mobile-topbar,
  body[data-screen="results"] .mobile-topbar,
  body[data-screen="visual"] .mobile-topbar {
    display: none;
  }
  .focus-header {
    flex-wrap: wrap;
    gap: 8px;
    position: sticky;
    top: 0;
    z-index: 20;
  }
  .focus-header > strong {
    max-width: calc(100% - 100px);
    font-size: 12px;
  }
  .focus-header > .ws-button {
    padding: 5px 0;
    font-size: 12px;
  }
  .runner-header-actions {
    width: 100%;
    justify-content: flex-start;
    gap: 8px;
  }
  .runner-header-actions .timer {
    margin-right: auto;
    font-size: 12px;
  }
  .runner-header-actions .ws-button {
    font-size: 10px;
    padding: 6px 8px;
  }
  .status-badge {
    font-size: 10px;
  }
  .runner-body {
    padding: 18px 16px 28px;
    gap: 14px;
  }
  .runner-outline {
    gap: 15px;
  }
  .runner-outline summary {
    font-size: 11px;
  }
  .runner-outline #progressContainer {
    min-width: 120px;
  }
  .runner-outline #progressText {
    font-size: 9px;
  }
  .runner-outline .q-index {
    height: 30px;
    min-height: 30px;
    font-size: 10px;
  }
  .runner-outline .question-grid {
    grid-template-columns: repeat(auto-fill, minmax(25px, 1fr));
    gap: 4px;
  }
  .test-panel {
    padding: 24px 20px;
    min-height: 420px;
  }
  .test-panel .question-prompt {
    font-size: 16px;
  }
  .test-panel .choice-row {
    font-size: 13px;
    padding: 12px;
  }
  .test-panel .question-area {
    min-height: 200px;
  }
  .test-actions {
    gap: 10px;
    padding-top: 16px;
    margin-top: 20px;
  }
  .test-actions .btn {
    font-size: 11px;
    padding: 8px 10px;
  }
  .test-actions .action-group {
    gap: 6px;
  }
  .review-content {
    padding: 20px 16px;
  }
  .review-content .result-score {
    font-size: 21px;
  }
  .review-content .entry-card {
    padding: 20px;
  }
  body[data-screen="visual"] .app-notice {
    position: relative;
    top: auto;
    left: auto;
    right: auto;
  }
}

@media (max-width: 350px) {
  .library-home {
    padding-left: 12px;
    padding-right: 12px;
  }
  .home-heading h1 {
    font-size: 25px;
  }
  .library-tabs button {
    padding-left: 7px;
    padding-right: 7px;
    font-size: 10px;
  }
  .view-control {
    display: none;
  }
  .material-row {
    padding-left: 10px;
    padding-right: 10px;
    gap: 8px;
  }
  .runner-body {
    padding-left: 12px;
    padding-right: 12px;
  }
  .test-panel {
    padding: 20px 16px;
  }
  .test-actions .btn {
    font-size: 10px;
  }
}