:root {
  color-scheme: light;
  --bg: #fbfaf8;
  --surface: #ffffff;
  --surface-soft: #f8f8f7;
  --line: #e6e2dd;
  --line-strong: #d8d4cf;
  --ink: #111827;
  --text: #2f3844;
  --muted: #6b7280;
  --faint: #9aa1aa;
  --accent: #ef523f;
  --accent-dark: #d94332;
  --accent-soft: #fff0ed;
  --green: #2f9b62;
  --blue: #2b78d4;
  --gold: #a36d31;
  --shadow: 0 1px 2px rgba(17, 24, 39, .04), 0 16px 45px rgba(17, 24, 39, .05);
  --radius: 8px;
  --sidebar: 238px;
  --max: 1420px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
  min-width: 0;
}

html {
  overflow-x: hidden;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.4;
  overflow-x: hidden;
}

button,
input,
select {
  font: inherit;
}

button,
label {
  -webkit-tap-highlight-color: transparent;
}

button {
  cursor: pointer;
}

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

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 5px;
  font-size: 2.05rem;
  line-height: 1.05;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: .98rem;
  line-height: 1.2;
  letter-spacing: 0;
}

p {
  margin-bottom: 0;
  color: var(--muted);
}

svg {
  display: block;
  width: 18px;
  height: 18px;
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: var(--sidebar) minmax(0, 1fr);
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  padding: 24px 18px 18px;
  border-right: 1px solid var(--line);
  background: #fff;
}

.logo {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  color: var(--ink);
}

.logo-mark {
  color: var(--accent);
}

.logo-mark svg {
  width: 31px;
  height: 31px;
  fill: currentColor;
}

.logo strong {
  display: block;
  font-size: 1.35rem;
  line-height: .95;
  letter-spacing: 0;
}

.logo small {
  display: block;
  margin-top: 2px;
  color: var(--accent);
  font-size: .72rem;
  font-weight: 900;
  letter-spacing: .11em;
}

.nav-list {
  display: grid;
  align-content: start;
  gap: 10px;
  margin-top: 48px;
}

.nav-list a,
.quiet-row,
.workspace-switch {
  min-height: 48px;
  display: flex;
  align-items: center;
  gap: 14px;
  border: 0;
  border-radius: var(--radius);
  background: transparent;
  color: #4b5563;
  padding: 0 15px;
  font-weight: 600;
  text-align: left;
}

.nav-list a.active {
  background: var(--accent-soft);
  color: var(--accent);
}

.nav-list span,
.quiet-row span:first-child {
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  color: currentColor;
}

.sidebar-footer {
  display: grid;
  gap: 8px;
}

.workspace-switch {
  width: 100%;
  min-height: 56px;
  padding-inline: 0;
  color: var(--ink);
}

.workspace-switch .avatar {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: .72rem;
  font-weight: 800;
}

.workspace-switch span:nth-child(2) {
  display: grid;
  gap: 1px;
  flex: 1;
}

.workspace-switch small {
  color: var(--muted);
  font-size: .78rem;
  font-weight: 500;
}

.quiet-row {
  width: 100%;
  min-height: 37px;
  padding-inline: 8px;
  color: #4b5563;
}

.collapse {
  margin-top: 20px;
  color: #6b7280;
}

.workspace {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding: 18px 38px 20px;
}

.project-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px 24px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: .85rem;
}

.breadcrumbs strong {
  color: var(--ink);
  font-weight: 650;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-actions button,
.status-select,
.text-button,
.wide-button,
.primary-button,
.replace-button,
.source-form button,
.concept-footer button {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  padding: 8px 13px;
  font-weight: 700;
  box-shadow: 0 1px 0 rgba(17, 24, 39, .02);
}

.icon-button {
  width: 48px;
  padding-inline: 0;
}

.account-chip {
  min-height: 38px;
  display: flex;
  align-items: center;
  gap: 9px;
  padding-left: 12px;
  color: var(--ink);
}

.account-chip > span:first-child {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #111827;
  color: #fff;
  font-size: .7rem;
  font-weight: 800;
}

.title-row {
  grid-column: 1 / -1;
  display: flex;
  align-items: start;
  gap: 12px;
}

.freshness {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: .82rem;
}

.freshness span:first-child {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
}

.edit-title {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  margin-top: 3px;
  border: 0;
  background: transparent;
  color: var(--muted);
}

.meta-strip {
  display: grid;
  grid-template-columns: 1.05fr 1.7fr .8fr 1.05fr 1.25fr;
  gap: 20px;
  padding: 14px 0 16px;
}

.meta-strip article {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
}

.meta-strip article:last-child {
  grid-template-columns: 1fr;
}

.meta-strip > article > span {
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  color: #6b7280;
}

.meta-strip small {
  display: block;
  margin-bottom: 2px;
  color: var(--muted);
  font-size: .75rem;
}

.meta-strip strong {
  display: block;
  color: var(--ink);
  font-weight: 600;
}

.status-select {
  min-height: 26px;
  padding: 3px 9px;
  border-color: #fac8bf;
  background: #fff5f2;
  color: var(--accent);
  font-size: .82rem;
  box-shadow: none;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: 315px minmax(410px, 1fr) 354px;
  gap: 12px;
  align-items: start;
}

.left-column,
.middle-column,
.right-column {
  display: grid;
  gap: 12px;
}

.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .92);
  box-shadow: var(--shadow);
}

.cover-panel,
.research-panel,
.concept-panel,
.queue-panel,
.status-panel,
.next-panel,
.checklist-panel {
  padding: 14px;
}

.panel-heading {
  margin-bottom: 12px;
}

.panel-heading p,
.concept-panel .panel-title-row p {
  margin-top: 4px;
  color: var(--muted);
  font-size: .86rem;
}

.panel-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}

.panel-title-row > span {
  color: var(--muted);
  font-size: .82rem;
}

.info-dot,
.count-badge {
  display: inline-grid;
  place-items: center;
  width: 18px;
  height: 18px;
  margin-left: 4px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  color: var(--muted);
  font-size: .72rem;
  vertical-align: 1px;
}

.count-badge {
  background: #fff;
  font-weight: 700;
}

.cover-workbench {
  display: grid;
  grid-template-columns: 145px minmax(0, 1fr);
  gap: 13px;
}

.book-cover,
.mini-cover,
.concept-poster {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  border-radius: 3px;
  background: #101923;
  color: #fff;
  box-shadow: 0 8px 24px rgba(17, 24, 39, .14);
}

.book-cover {
  width: 145px;
  height: 242px;
  display: grid;
  align-content: space-between;
  padding: 22px 16px 15px;
}

.book-cover::before,
.mini-cover::before,
.concept-poster::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(circle at 72% 80%, rgba(255, 70, 46, .7), transparent 22%),
    radial-gradient(circle at 30% 25%, rgba(80, 140, 170, .38), transparent 28%),
    linear-gradient(160deg, #101d2b, #071018 54%, #172536);
}

.book-cover::after,
.mini-cover::after,
.concept-poster::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: .55;
  background:
    linear-gradient(90deg, transparent 48%, rgba(255,255,255,.12) 49%, transparent 50%),
    linear-gradient(0deg, transparent 62%, rgba(255,255,255,.14) 63%, transparent 64%);
  background-size: 48px 100%, 100% 38px;
}

.cover-kicker,
.poster-kicker {
  color: rgba(255,255,255,.72);
  text-align: center;
  text-transform: uppercase;
  font-size: .42rem;
  font-weight: 800;
  letter-spacing: .16em;
}

.cover-title,
.poster-title {
  display: block;
  text-align: center;
  text-transform: uppercase;
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: .18em;
  line-height: 1.22;
}

.cover-author,
.poster-author {
  display: block;
  text-align: center;
  text-transform: uppercase;
  font-size: .66rem;
  font-weight: 800;
  letter-spacing: .14em;
}

.poster-kicker {
  font-size: .35rem;
  letter-spacing: .12em;
  line-height: 1.45;
}

.poster-author {
  font-size: .48rem;
  letter-spacing: .1em;
  line-height: 1.35;
}

.cover-image-preview {
  width: 145px;
  height: 242px;
  object-fit: cover;
  border-radius: 3px;
  box-shadow: 0 8px 24px rgba(17, 24, 39, .14);
}

.drop-zone {
  min-height: 194px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 8px;
  border: 1px dashed #cfcac5;
  border-radius: var(--radius);
  background: #fff;
  color: var(--muted);
  text-align: center;
}

.drop-zone input,
.replace-button input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.drop-zone strong {
  color: var(--ink);
}

.drop-zone small {
  color: var(--muted);
  font-size: .72rem;
}

.replace-button {
  grid-column: 2;
  min-height: 36px;
}

.progress-track {
  height: 4px;
  overflow: hidden;
  border-radius: 99px;
  background: #f1e7e3;
}

.progress-track span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--accent);
  transition: width .2s ease;
}

.checklist {
  margin-top: 17px;
  display: grid;
}

.check-row {
  min-height: 33px;
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr) 18px;
  align-items: center;
  gap: 8px;
  border: 0;
  border-bottom: 1px solid #f0eeee;
  background: transparent;
  color: var(--ink);
  padding: 0 4px;
  text-align: left;
}

.check-row:last-child {
  border-bottom: 0;
}

.check-circle {
  width: 17px;
  height: 17px;
  display: grid;
  place-items: center;
  border: 1.5px solid #a9b1bb;
  border-radius: 50%;
  color: transparent;
}

.check-row.complete .check-circle {
  border-color: var(--green);
  color: var(--green);
}

.check-row span:nth-child(2) {
  font-size: .84rem;
}

.source-form {
  grid-template-columns: minmax(0, 1fr) 80px auto;
  gap: 8px;
  margin-bottom: 10px;
}

.source-form:not([hidden]) {
  display: grid;
}

.source-form input,
.source-form select {
  min-height: 34px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  padding: 6px 9px;
}

.source-table {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 6px;
}

.source-row {
  min-height: 41px;
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr) 55px 84px 28px;
  align-items: center;
  gap: 10px;
  padding: 0 10px;
  border-bottom: 1px solid #f0eeee;
  background: #fff;
}

.source-row:last-child {
  border-bottom: 0;
}

.source-icon,
.row-action {
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  color: #6b7280;
  background: #fff;
}

.source-icon.doc {
  background: #eaf2ff;
  color: var(--blue);
  border-color: #c9ddff;
}

.source-icon.goodreads {
  background: #fbf2e9;
  color: var(--gold);
  border-color: #efd5b8;
}

.source-title {
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  font-size: .82rem;
  font-weight: 600;
}

.source-row small {
  color: var(--muted);
  font-size: .75rem;
}

.row-action {
  border: 0;
  color: var(--muted);
}

.table-link {
  width: 100%;
  min-height: 34px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border: 0;
  border-top: 1px solid var(--line);
  background: #fff;
  color: var(--muted);
  padding: 0 10px;
  text-align: left;
}

.text-button,
.concept-footer button {
  min-height: 28px;
  border: 0;
  box-shadow: none;
  padding: 3px 8px;
  color: var(--ink);
  background: transparent;
  font-size: .82rem;
}

.concept-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 9px;
}

.concept-card {
  position: relative;
  display: grid;
  gap: 8px;
  border: 0;
  background: transparent;
  padding: 0;
  text-align: left;
}

.concept-frame {
  position: relative;
  border: 2px solid transparent;
  border-radius: 6px;
  padding: 0;
  background: #fff;
  transition: border-color .16s ease, transform .16s ease, box-shadow .16s ease;
}

.concept-card:hover .concept-frame {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(17, 24, 39, .11);
}

.concept-card.selected .concept-frame {
  border-color: var(--accent);
}

.selected-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 2;
  width: 26px;
  height: 26px;
  display: none;
  place-items: center;
  border: 2px solid #fff;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  box-shadow: 0 3px 10px rgba(239, 82, 63, .35);
}

.concept-card.selected .selected-badge {
  display: grid;
}

.concept-poster {
  width: 100%;
  aspect-ratio: 9 / 15.4;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto auto;
  gap: 7px;
  padding: 13px 7px 11px;
}

.concept-poster.white {
  color: #14171d;
  background: #f4f0e7;
}

.concept-poster.white::before {
  background:
    radial-gradient(circle at 50% 58%, rgba(22, 38, 54, .16), transparent 24%),
    linear-gradient(145deg, #f7f3ec, #e7e0d7);
}

.concept-poster.white::after {
  opacity: .28;
  background:
    linear-gradient(135deg, transparent 0 42%, rgba(100, 110, 121, .18) 43% 44%, transparent 45%),
    linear-gradient(45deg, transparent 0 50%, rgba(100, 110, 121, .12) 51% 52%, transparent 53%);
  background-size: 100% 100%;
}

.concept-poster.frequency::before {
  background:
    radial-gradient(circle at 50% 68%, rgba(255, 45, 36, .5), transparent 18%),
    repeating-linear-gradient(90deg, transparent 0 12px, rgba(239,82,63,.45) 13px, transparent 14px),
    linear-gradient(180deg, #080d12, #111922 44%, #030507);
}

.concept-poster.compass {
  color: #101923;
  background: #f8f0df;
}

.concept-poster.compass::before {
  background:
    radial-gradient(circle at 50% 64%, transparent 0 20%, rgba(239,82,63,.35) 20% 22%, transparent 23%),
    radial-gradient(circle at 50% 64%, transparent 0 34%, rgba(29,36,44,.14) 35% 36%, transparent 37%),
    linear-gradient(180deg, #f9f3e7, #efe4d3);
}

.poster-title {
  font-size: clamp(.94rem, 1.05vw, 1.08rem);
  letter-spacing: .11em;
  line-height: 1.28;
  white-space: nowrap;
}

.poster-scene {
  align-self: end;
  justify-self: center;
  width: 52%;
  height: 36%;
  border-radius: 50% 50% 0 0;
  background:
    radial-gradient(circle at 50% 100%, rgba(255,255,255,.9), transparent 9%),
    linear-gradient(180deg, transparent 0 58%, rgba(255,255,255,.65) 59% 60%, transparent 61%),
    linear-gradient(90deg, transparent 48%, rgba(255,255,255,.55) 49% 51%, transparent 52%);
}

.concept-card small {
  display: block;
  color: var(--muted);
  font-size: .7rem;
}

.concept-footer {
  min-height: 34px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 10px;
  color: var(--muted);
  font-size: .8rem;
}

.concept-footer > span {
  display: flex;
  align-items: center;
  gap: 7px;
}

.queue-list {
  display: grid;
  gap: 9px;
}

.queue-item {
  min-height: 73px;
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) 28px;
  gap: 12px;
  align-items: center;
  padding: 9px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
}

.mini-cover {
  width: 39px;
  height: 55px;
  display: grid;
  place-items: center;
  padding: 5px;
  text-align: center;
}

.mini-cover strong {
  text-transform: uppercase;
  font-size: .45rem;
  letter-spacing: .12em;
  line-height: 1.25;
}

.queue-copy strong {
  display: block;
  margin-bottom: 3px;
  font-weight: 600;
}

.queue-copy span {
  display: block;
  color: var(--muted);
  font-size: .83rem;
}

.queue-copy .building {
  color: var(--accent);
  font-weight: 700;
}

.progress-line {
  width: 100%;
  height: 3px;
  margin-top: 6px;
  border-radius: 99px;
  background: #f4d4cf;
}

.progress-line span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--accent);
  transition: width .25s ease;
}

.queue-percent {
  color: var(--muted);
  font-size: .8rem;
  text-align: right;
}

.wide-button,
.primary-button {
  width: 100%;
  min-height: 38px;
}

.primary-button {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.primary-button:hover {
  background: var(--accent-dark);
}

.queue-panel .wide-button {
  margin-top: 9px;
}

.status-panel dl {
  display: grid;
  gap: 7px;
  margin: 10px 0 0;
}

.status-panel div {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr) auto;
  align-items: center;
  gap: 6px;
}

.status-panel dt {
  color: var(--text);
}

.status-panel dd {
  margin: 0;
  font-weight: 700;
}

.status-icon {
  width: 17px;
  height: 17px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  color: var(--muted);
}

.next-panel p {
  margin: 8px 0 13px;
  font-size: .83rem;
}

.next-panel {
  display: grid;
  gap: 8px;
}

.route-view {
  min-height: 620px;
}

.route-stack {
  display: grid;
  gap: 12px;
}

.route-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 2px;
}

.route-heading h2 {
  font-size: 1.08rem;
}

.route-heading p {
  margin-top: 4px;
  max-width: 720px;
  font-size: .86rem;
}

.fit-button {
  width: auto;
  min-width: 170px;
}

.intake-layout,
.concepts-workspace,
.build-layout,
.two-column-grid {
  display: grid;
  gap: 12px;
  align-items: start;
}

.intake-layout {
  grid-template-columns: 315px minmax(0, 1fr);
}

.concepts-workspace {
  grid-template-columns: minmax(0, 1fr) 360px;
}

.build-layout {
  grid-template-columns: minmax(320px, 1fr) 310px minmax(320px, 1fr);
}

.two-column-grid {
  grid-template-columns: minmax(0, 1fr) minmax(360px, .9fr);
}

.projects-panel,
.intake-editor,
.activity-panel,
.concept-detail-panel,
.settings-panel,
.help-panel,
.export-panel,
.preview-card,
.empty-panel {
  padding: 14px;
}

.project-card-list,
.fact-list,
.question-status-list,
.selected-list,
.activity-list,
.preview-grid {
  display: grid;
  gap: 9px;
}

.project-card-list article {
  min-height: 72px;
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 9px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
}

.project-card-list article.active {
  border-color: #f4b7ad;
  background: #fff8f6;
}

.project-card-list p,
.panel-note,
.question-group p,
.preview-card p,
.concept-detail-panel p,
.help-panel p {
  margin-top: 3px;
  color: var(--muted);
  font-size: .83rem;
}

.project-card-list span {
  color: var(--accent);
  font-size: .78rem;
  font-weight: 700;
}

.question-group {
  display: grid;
  grid-template-columns: minmax(180px, .7fr) minmax(0, 1fr);
  gap: 18px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.question-group:first-of-type {
  border-top: 0;
  padding-top: 2px;
}

.question-group h3 {
  margin: 0;
  font-size: .95rem;
}

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

.question-list label {
  display: grid;
  gap: 6px;
}

.question-list label > span {
  color: var(--text);
  font-size: .78rem;
  font-weight: 700;
}

.question-list textarea {
  min-height: 70px;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  padding: 9px 10px;
  color: var(--ink);
  line-height: 1.4;
}

.fact-list article {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
}

.fact-list small,
.preview-card small,
.selected-list small,
.activity-list small {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: .76rem;
}

.question-status-list button {
  min-height: 54px;
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr) 110px;
  gap: 10px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  padding: 10px;
  text-align: left;
}

.question-status-list small {
  justify-self: end;
  color: var(--accent);
  font-weight: 700;
}

.concept-grid.large {
  grid-template-columns: repeat(4, minmax(120px, 1fr));
}

.concept-detail-panel {
  display: grid;
  align-content: start;
  gap: 12px;
}

.selected-list article,
.activity-list div {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
}

.activity-list div {
  grid-template-columns: 24px minmax(0, 1fr) 80px;
  align-items: center;
}

.activity-list small {
  margin-top: 0;
  text-align: right;
}

.preview-grid {
  grid-template-columns: repeat(2, minmax(280px, 1fr));
}

.preview-card {
  display: grid;
  grid-template-columns: 118px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

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

.preview-cover .concept-poster {
  width: 118px;
}

.export-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, .7fr);
  gap: 18px;
  align-items: start;
}

.export-panel dl,
.settings-panel dl {
  display: grid;
  gap: 8px;
  margin: 0;
}

.export-panel dl div,
.settings-panel dl div {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.export-panel dt,
.settings-panel dt {
  color: var(--muted);
}

.export-panel dd,
.settings-panel dd {
  margin: 0;
  font-weight: 700;
}

.settings-panel,
.help-panel {
  display: grid;
  gap: 12px;
  align-content: start;
}

.help-panel ol {
  margin: 0;
  padding-left: 18px;
  color: var(--text);
}

.help-panel li + li {
  margin-top: 8px;
}

.app-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 34%;
  padding: 24px 0 0;
  color: var(--faint);
  font-size: .78rem;
}

.app-footer nav {
  display: flex;
  gap: 28px;
  color: #6b7280;
}

.toast {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 20;
  max-width: min(360px, calc(100vw - 44px));
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #111827;
  color: #fff;
  box-shadow: 0 16px 40px rgba(17, 24, 39, .2);
  font-weight: 700;
}

[hidden] {
  display: none !important;
}

@media (max-width: 1250px) {
  .workspace {
    padding-inline: 24px;
  }

  .dashboard-grid {
    grid-template-columns: 300px minmax(390px, 1fr);
  }

  .right-column {
    grid-column: 1 / -1;
    grid-template-columns: 1fr 1fr 1fr;
  }

  .concepts-workspace,
  .build-layout {
    grid-template-columns: 1fr;
  }

  .build-layout {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 960px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
    grid-template-rows: auto auto;
    gap: 18px;
  }

  .nav-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 16px;
  }

  .sidebar-footer {
    display: none;
  }

  .workspace {
    width: 100%;
  }

  .dashboard-grid,
  .right-column,
  .intake-layout,
  .concepts-workspace,
  .build-layout,
  .two-column-grid,
  .export-panel {
    grid-template-columns: 1fr;
  }

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

  .route-heading {
    align-items: stretch;
    flex-direction: column;
  }

  .fit-button {
    width: 100%;
  }

  .question-group {
    grid-template-columns: 1fr;
  }

  .preview-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  body {
    font-size: 13px;
  }

  .workspace {
    padding: 18px 14px 20px;
  }

  .project-header {
    grid-template-columns: 1fr;
  }

  .header-actions {
    flex-wrap: wrap;
  }

  h1 {
    font-size: 1.85rem;
  }

  .meta-strip,
  .cover-workbench,
  .concept-grid,
  .concept-grid.large {
    grid-template-columns: 1fr;
  }

  .sidebar {
    padding: 12px 14px;
    gap: 10px;
  }

  .logo {
    grid-template-columns: 28px minmax(0, 1fr);
  }

  .logo-mark svg {
    width: 25px;
    height: 25px;
  }

  .logo strong {
    font-size: 1.12rem;
  }

  .nav-list {
    display: flex;
    gap: 8px;
    margin-top: 4px;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .nav-list a {
    min-height: 40px;
    flex: 0 0 auto;
    padding-inline: 12px;
  }

  .replace-button {
    grid-column: auto;
  }

  .book-cover,
  .cover-image-preview {
    width: min(170px, 100%);
    height: auto;
    aspect-ratio: 3 / 5;
  }

  .source-row {
    grid-template-columns: 24px minmax(0, 1fr) 44px;
  }

  .source-row small:nth-of-type(2),
  .row-action {
    display: none;
  }

  .question-status-list button,
  .project-card-list article,
  .preview-card,
  .selected-list article,
  .activity-list div {
    grid-template-columns: 1fr;
  }

  .question-status-list small,
  .activity-list small {
    justify-self: start;
    text-align: left;
  }

  .preview-cover .concept-poster {
    width: min(180px, 100%);
  }

  .concept-poster {
    max-height: 520px;
  }

  .app-footer {
    display: grid;
    justify-items: center;
    gap: 12px;
  }
}