:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --surface-alt: #f1f4f8;
  --surface-soft: #fbfcfd;
  --text: #242428;
  --text-strong: #111113;
  --muted: #6f6f78;
  --border: #dedee3;
  --border-strong: #c9c9d1;
  --accent: #d97706;
  --accent-dark: #b45309;
  --accent-soft: rgba(217, 119, 6, 0.14);
  --green: #16833a;
  --yellow: #b7791f;
  --red: #b42318;
  --blue: #2563eb;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background: var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.45;
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

button:disabled,
input:disabled,
select:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

h1,
h2,
h3,
p,
pre {
  margin: 0;
}

h1,
h2,
h3 {
  color: var(--text-strong);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: 0;
}

h1 {
  font-size: 2rem;
}

h2 {
  font-size: 1.35rem;
}

h3 {
  font-size: 1rem;
}

a {
  color: var(--accent);
}

.page-shell {
  width: 100%;
  margin: 0 auto;
  padding: 0 0 40px;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10000;
  isolation: isolate;
  width: 100%;
  margin: 0 0 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.topbar-panel {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 0;
  min-height: 66px;
  display: flex;
  align-items: center;
  gap: 28px;
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.topbar-header {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
  min-width: 0;
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: block;
  object-fit: cover;
  border-radius: 6px;
}

.brand-wording {
  display: grid;
  gap: 1px;
}

.brand-wording .eyebrow {
  color: var(--accent);
  font-size: 1.16rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: none;
}

.brand-tagline,
.topbar-summary,
.topbar-pill,
.settings-theme-card,
.theme-toggle {
  display: none !important;
}

.topbar-actions {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.view-tabs {
  display: flex;
  align-items: center;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
}

.view-tabs::-webkit-scrollbar {
  display: none;
}

.view-tab {
  min-height: 66px;
  padding: 0 14px;
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: #111113;
  font-weight: 500;
  white-space: nowrap;
}

.view-tab:hover {
  color: var(--accent);
}

.view-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.topbar-status {
  display: flex;
  align-items: center;
  gap: 10px;
}

.app-grid {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

body[data-auth="signed-out"] .page-shell {
  width: 100%;
  max-width: none;
  padding-bottom: 0;
}

body[data-auth="signed-out"] .topbar {
  margin-bottom: 0;
}

body[data-auth="signed-out"] .app-grid {
  width: 100%;
  min-height: calc(100vh - 67px);
  display: grid;
  grid-template-columns: minmax(320px, 480px);
  justify-content: center;
  align-items: center;
  padding: 40px 20px;
  background:
    linear-gradient(90deg, #e9eef4 0 32%, #ffffff 32% 68%, #e9eef4 68% 100%);
}

body[data-auth="signed-out"] .main-stage,
body[data-auth="signed-out"] .quick-card,
body[data-auth="signed-out"] .publish-card {
  display: none;
}

body[data-auth="signed-out"] .rail {
  width: 100%;
}

body[data-auth="signed-out"] .account-card {
  border: 0;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.24);
}

.rail,
.main-stage,
.hero-grid,
.detail-grid,
.report-grid,
.composer-grid,
.stats-grid,
.account-stats,
.overview-summary-grid,
.insights-grid,
.backfill-grid,
.comparison-controls {
  display: grid;
  gap: 16px;
}

.main-stage {
  position: relative;
  z-index: 1;
  min-width: 0;
}

.panel,
.rail-card,
.insights-panel,
.personal-insights-panel,
.backfill-panel,
.overview-panel,
.overview-summary-panel,
.activity-detail,
.composer,
.faq-panel,
.review-modal-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.panel,
.rail-card,
.insights-panel,
.personal-insights-panel,
.backfill-panel,
.overview-panel,
.overview-summary-panel,
.activity-detail,
.composer,
.faq-panel {
  padding: 20px;
}

.topbar .topbar-panel {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 0;
  min-height: 66px;
  display: flex;
  align-items: center;
  gap: 28px;
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.rail {
  position: sticky;
  top: 90px;
  z-index: 20;
  align-self: start;
}

.account-card {
  display: grid;
  gap: 14px;
}

.eyebrow,
.kicker,
.label {
  color: var(--muted);
  font-size: 0.73rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.muted,
.lead,
.insight-card small,
.history-table-empty,
.history-table-row span {
  color: var(--muted);
}

.lead {
  max-width: 58ch;
  line-height: 1.6;
}

.section-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.section-heading.compact {
  margin-bottom: 12px;
}

.section-heading > div {
  display: grid;
  gap: 5px;
}

.section-actions,
.action-row,
.stack-actions,
.preview-actions,
.review-actions,
.bulk-review-head,
.quota-head,
.preview-meta,
.pagination-bar,
.timeline-pagination {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.section-actions,
.action-row {
  justify-content: flex-end;
}

.stack-actions {
  display: grid;
  grid-template-columns: 1fr;
}

.strava-button,
.ghost-button,
.auth-toggle-button {
  min-height: 40px;
  border-radius: 4px;
  padding: 0 16px;
  font-weight: 600;
  transition: background 140ms ease, border-color 140ms ease, color 140ms ease, box-shadow 140ms ease;
}

.strava-button {
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
}

.strava-button:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
}

.strava-button.subtle {
  background: var(--accent);
  color: #fff;
}

.ghost-button {
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
}

.ghost-button:hover {
  border-color: #9a9aa3;
  background: var(--surface-alt);
}

.ghost-button.small {
  min-height: 34px;
  padding: 0 12px;
  font-size: 0.88rem;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 600;
  white-space: nowrap;
}

.post-status-pill[data-state="posted"],
.quota-pill[data-tone="good"] {
  border-color: rgba(22, 131, 58, 0.25);
  background: rgba(22, 131, 58, 0.08);
  color: var(--green);
}

.post-status-pill[data-state="changed"],
.quota-pill[data-tone="warning"] {
  border-color: rgba(183, 121, 31, 0.28);
  background: rgba(183, 121, 31, 0.09);
  color: var(--yellow);
}

label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 500;
}

input:not([type="checkbox"]),
select {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  padding: 0 12px;
  color: var(--text);
  background: var(--surface);
  outline: none;
}

input:not([type="checkbox"]):focus,
select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-soft);
}

.auth-panel,
.auth-form,
.admin-user-form,
.controls,
.filter-stack,
.micro-list,
.stack,
.preview-column,
.backfill-stack,
.insight-stack {
  display: grid;
  gap: 12px;
}

.auth-toggle {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  overflow: hidden;
}

.auth-toggle-button {
  border: 0;
  border-radius: 0;
  background: var(--surface);
  color: var(--text);
}

.auth-toggle-button + .auth-toggle-button {
  border-left: 1px solid var(--border-strong);
}

.auth-toggle-button.active {
  background: var(--surface-alt);
  color: var(--accent);
}

.auth-note,
.account-helper,
.quota-copy {
  font-size: 0.88rem;
}

.checkbox-label,
.toggle {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--text);
}

.checkbox-label input,
.toggle input {
  margin-top: 4px;
}

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

.account-stats article,
.quota-stat,
.metric,
.stat-card,
.pace-compare-card,
.backfill-stat-card,
.insight-card,
.history-table-row,
.history-table-empty,
.timeline-step,
.breakdown-list li,
.condition-list li,
.summary-status-card,
.settings-note,
.faq-intro,
.faq-item,
.activity-row,
.bulk-review-item {
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
}

.account-stats article,
.quota-stat,
.metric,
.stat-card,
.pace-compare-card,
.backfill-stat-card,
.insight-card,
.history-table-empty,
.timeline-step,
.summary-status-card,
.settings-note,
.faq-intro,
.faq-item,
.bulk-review-item {
  padding: 14px;
}

.account-stats span,
.quota-stat span,
.metric p,
.stat-card span,
.pace-compare-label,
.backfill-stat-card span,
.insight-card p {
  display: block;
  color: var(--muted);
  font-size: 0.88rem;
}

.account-stats strong,
.quota-stat strong,
.metric strong,
.stat-card strong,
.pace-compare-card strong,
.backfill-stat-card strong,
.insight-card strong {
  display: block;
  margin-top: 4px;
  color: var(--text-strong);
  font-size: 1.25rem;
  font-weight: 700;
}

.quota-card {
  display: grid;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.quota-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.micro-list {
  padding: 0;
  margin: 0;
  list-style: none;
}

.micro-list li {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 9px 0;
  border-bottom: 1px solid var(--border);
}

.micro-list li:last-child {
  border-bottom: 0;
}

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

.hero-copy {
  display: none;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  padding: 0;
  border: 0;
  box-shadow: none;
  background: transparent;
}

.hero-points {
  display: none;
}

.overview-summary-panel,
.insights-panel,
.personal-insights-panel,
.backfill-panel,
.overview-panel,
.activity-detail,
.composer,
.faq-panel {
  margin-top: 16px;
}

.overview-summary-grid {
  grid-template-columns: 0.75fr 1fr 1fr;
  align-items: start;
}

.insight-subhead {
  display: grid;
  gap: 4px;
  margin-bottom: 10px;
}

.insight-chip-grid,
.insight-card-grid,
.backfill-stat-grid,
.distribution-grid,
.acclimation-grid,
.condition-bucket-grid,
.baseline-grid,
.athlete-profile-grid,
.personal-insight-grid,
.comparison-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.insight-chip {
  display: grid;
  gap: 5px;
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
  text-align: left;
}

.insight-chip.active,
.insight-chip:hover,
.insight-card-link:hover,
.activity-row:hover,
.activity-row.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent-soft);
}

.insight-chip strong {
  color: var(--text-strong);
  font-size: 1.25rem;
}

.insight-card {
  display: grid;
  gap: 5px;
}

.insight-card strong {
  font-size: 1rem;
}

.insight-card-link {
  cursor: pointer;
}

.history-table {
  display: grid;
  gap: 0;
  overflow-x: auto;
}

.history-table-head,
.history-table-row {
  display: grid;
  grid-template-columns: 1.2fr repeat(4, minmax(90px, 1fr));
  gap: 12px;
  min-width: 620px;
  align-items: center;
}

.history-table-head.extended,
.history-table-row.extended {
  grid-template-columns: 1.5fr repeat(7, minmax(96px, 1fr));
  min-width: 940px;
}

.history-table-head {
  padding: 10px 12px;
  color: var(--muted);
  font-size: 0.77rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border);
}

.history-table-row {
  padding: 12px;
  border-width: 0 0 1px;
  border-radius: 0;
}

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

.admin-user-cell {
  display: grid;
  gap: 3px;
}

.admin-user-cell small {
  color: var(--muted);
}

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

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

.backfill-item {
  display: grid;
  gap: 3px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
}

.backfill-report-section {
  display: grid;
  gap: 8px;
}

.backfill-empty-note {
  color: var(--muted);
  font-size: 0.9rem;
}

.backfill-progress-track,
.timeline-bar {
  height: 7px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--surface-alt);
}

.backfill-progress-fill,
.timeline-fill {
  height: 100%;
  border-radius: inherit;
  background: var(--accent);
}

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

.activity-row {
  padding: 14px;
  cursor: pointer;
}

.activity-row header {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
}

.activity-row h3 {
  font-size: 1rem;
}

.activity-row p {
  color: var(--muted);
  font-size: 0.9rem;
}

.activity-chip {
  color: var(--accent);
  font-weight: 700;
  white-space: nowrap;
}

.activity-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.9rem;
}

.activity-select input {
  width: 18px;
  height: 18px;
}

.pagination-bar,
.timeline-pagination {
  justify-content: center;
  margin-top: 14px;
  color: var(--muted);
}

.view-panel {
  display: none;
}

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

.detail-grid {
  grid-template-columns: 0.9fr 1.25fr;
}

.route-map-card {
  position: relative;
  z-index: 0;
  isolation: isolate;
  contain: paint;
  margin-bottom: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.route-map-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
}

.route-map-header h3 {
  margin-top: 2px;
  font-size: 1.05rem;
}

.route-map-tools {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
  margin-left: auto;
}

.route-map-tools span {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--surface-soft);
  color: var(--muted);
  font-size: 0.82rem;
}

.route-map-source {
  padding: 8px 14px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.76rem;
  line-height: 1.35;
  text-align: right;
}

.route-map-fit {
  min-height: 30px;
  padding: 0 10px;
}

.route-map-leaflet {
  position: relative;
  z-index: 0;
  isolation: isolate;
  contain: paint;
  overflow: hidden;
  width: 100%;
  height: 360px;
  background: #eef1f5;
}

.activity-nav {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 2px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface-soft);
}

.activity-nav span {
  min-width: 54px;
  color: var(--muted);
  font-size: 0.82rem;
  text-align: center;
  white-space: nowrap;
}

.route-map-leaflet.leaflet-container {
  font-family: inherit;
  z-index: 0;
}

.route-map-leaflet .leaflet-pane {
  z-index: 1;
}

.route-map-leaflet .leaflet-tile-pane {
  z-index: 1;
}

.route-map-leaflet .leaflet-overlay-pane {
  z-index: 2;
}

.route-map-leaflet .leaflet-marker-pane,
.route-map-leaflet .leaflet-shadow-pane {
  z-index: 3;
}

.route-map-leaflet .leaflet-tooltip-pane,
.route-map-leaflet .leaflet-popup-pane {
  z-index: 4;
}

.route-map-leaflet .leaflet-control-container,
.route-map-leaflet .leaflet-top,
.route-map-leaflet .leaflet-bottom {
  z-index: 5;
}

.route-map-leaflet .leaflet-tile {
  max-width: none;
  max-height: none;
}

.route-map-leaflet .leaflet-control-zoom a {
  color: var(--text-strong);
}

.route-map-leaflet .leaflet-control-attribution,
.route-map-leaflet .leaflet-control-scale-line {
  color: var(--muted);
  font-size: 0.72rem;
}

.route-map-leaflet .leaflet-control-attribution a {
  color: var(--accent-dark);
}

.route-map-canvas {
  position: relative;
  min-height: 330px;
  overflow: hidden;
  background:
    linear-gradient(rgba(255, 255, 255, 0.62), rgba(255, 255, 255, 0.62)),
    linear-gradient(90deg, rgba(90, 100, 120, 0.08) 1px, transparent 1px),
    linear-gradient(rgba(90, 100, 120, 0.08) 1px, transparent 1px),
    #eef1f5;
  background-size: auto, 80px 80px, 80px 80px, auto;
}

.map-road,
.map-park {
  position: absolute;
  pointer-events: none;
}

.map-road {
  height: 18px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: inset 0 0 0 1px rgba(160, 168, 180, 0.45);
}

.map-road-one {
  width: 62%;
  top: 28%;
  left: -8%;
  transform: rotate(-12deg);
}

.map-road-two {
  width: 55%;
  right: -12%;
  bottom: 22%;
  transform: rotate(-18deg);
}

.map-park {
  border-radius: 16px;
  background: rgba(67, 160, 91, 0.24);
}

.map-park-one {
  width: 24%;
  height: 44%;
  top: 11%;
  right: 13%;
  transform: rotate(-5deg);
}

.map-park-two {
  width: 20%;
  height: 28%;
  left: 9%;
  bottom: 12%;
  transform: rotate(9deg);
}

.route-map-svg {
  position: relative;
  z-index: 2;
  display: block;
  width: 100%;
  height: 330px;
}

.route-line-shadow,
.route-line {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.route-line-shadow {
  stroke: rgba(255, 255, 255, 0.95);
  stroke-width: 26;
}

.route-line {
  stroke: var(--accent);
  stroke-width: 16;
}

.route-arrow path {
  fill: #ffffff;
  stroke: var(--accent);
  stroke-width: 2;
}

.route-start-dot {
  fill: #55c43b;
  stroke: #ffffff;
  stroke-width: 5;
}

.route-finish-ring {
  fill: #ffffff;
  stroke: #111113;
  stroke-width: 4;
}

.route-map-scale {
  position: absolute;
  z-index: 3;
  left: 14px;
  bottom: 12px;
  min-width: 86px;
  padding-top: 8px;
  border-left: 2px solid rgba(20, 24, 32, 0.55);
  border-right: 2px solid rgba(20, 24, 32, 0.55);
  border-bottom: 2px solid rgba(20, 24, 32, 0.55);
  color: var(--muted);
  font-size: 0.78rem;
  text-align: center;
}

.route-map-empty {
  display: grid;
  min-height: 180px;
  place-items: center;
  padding: 24px;
  background:
    linear-gradient(90deg, rgba(90, 100, 120, 0.08) 1px, transparent 1px),
    linear-gradient(rgba(90, 100, 120, 0.08) 1px, transparent 1px),
    #eef1f5;
  background-size: 72px 72px;
  color: var(--muted);
  text-align: center;
}

.route-map-empty h3 {
  margin: 4px 0 6px;
}

.summary-card,
.timeline-card,
.comparison-panel {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  background: var(--surface-soft);
}

.pace-compare-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 12px 0;
}

.pace-compare-card strong {
  font-size: 1.55rem;
}

#primary-limiter {
  color: var(--muted);
}

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

.stat-card strong {
  font-size: 1.3rem;
}

.metric-empty {
  color: var(--muted) !important;
  font-size: 1rem !important;
}

.report-grid {
  grid-template-columns: 0.9fr 1.1fr;
  margin-top: 16px;
}

.breakdown-list,
.condition-list {
  display: grid;
  gap: 8px;
  padding: 0;
  margin: 10px 0 0;
  list-style: none;
}

.breakdown-list li,
.condition-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
}

.breakdown-list span,
.condition-list span {
  color: var(--muted);
}

.timeline {
  display: grid;
  gap: 10px;
  margin-top: 10px;
}

.timeline-step {
  display: grid;
  gap: 8px;
}

.timeline-head,
.timeline-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.timeline-meta {
  color: var(--muted);
  font-size: 0.9rem;
}

.comparison-panel {
  margin-top: 16px;
}

.comparison-controls {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-bottom: 12px;
}

.composer-grid {
  grid-template-columns: minmax(260px, 0.8fr) minmax(320px, 1.2fr);
}

.preview-card {
  display: grid;
  gap: 12px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface-soft);
}

pre,
.formula-block {
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

#summary-preview,
.review-description pre,
.bulk-review-item pre {
  min-height: 160px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
  font-size: 0.9rem;
}

.preview-meta {
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.88rem;
}

.faq-grid {
  display: grid;
  gap: 12px;
}

.faq-item {
  padding: 0;
  overflow: hidden;
}

.faq-item summary {
  padding: 14px 16px;
  color: var(--text-strong);
  font-weight: 700;
  cursor: pointer;
}

.faq-body {
  display: grid;
  gap: 12px;
  padding: 0 16px 16px;
  color: var(--text);
}

.formula-block {
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #f4f4f2;
  color: #242428;
}

.label-with-help,
.heading-help,
.stat-label {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.help-chip {
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--surface);
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.help-chip:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.modal-shell {
  position: fixed;
  inset: 0;
  z-index: 3000;
  display: grid;
  place-items: center;
  padding: 20px;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.42);
}

.review-modal-card {
  position: relative;
  z-index: 1;
  width: min(960px, 100%);
  max-height: calc(100vh - 40px);
  overflow: auto;
  padding: 20px;
}

.review-modal-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.review-description {
  display: grid;
  gap: 8px;
}

.review-actions {
  justify-content: flex-end;
  margin-top: 16px;
}

.bulk-review-list {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 22px;
  z-index: 4000;
  transform: translateX(-50%) translateY(20px);
  min-width: min(420px, calc(100vw - 32px));
  padding: 12px 16px;
  border-radius: 6px;
  background: #242428;
  color: #fff;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms ease, transform 160ms ease;
}

.toast.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (max-width: 1100px) {
  .app-grid {
    grid-template-columns: 260px minmax(0, 1fr);
  }

  .overview-summary-grid,
  .backfill-grid,
  .detail-grid,
  .report-grid {
    grid-template-columns: 1fr;
  }

  .hero-metrics,
  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .app-grid {
    width: min(100% - 20px, 680px);
  }

  .topbar .topbar-panel {
    width: min(100% - 20px, 680px);
    min-height: auto;
    padding: 10px 0;
    display: grid;
    gap: 8px;
  }

  .topbar-actions {
    width: 100%;
    min-width: 0;
    display: grid;
    gap: 8px;
  }

  .view-tabs {
    max-width: 100%;
  }

  .view-tab {
    min-height: 42px;
    padding: 0 10px;
  }

  .app-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .rail {
    position: static;
  }

  .hero-metrics,
  .stats-grid,
  .pace-compare-grid,
  .account-stats,
  .quota-grid,
  .composer-grid,
  .comparison-controls,
  .review-modal-grid {
    grid-template-columns: 1fr;
  }

  .section-heading,
  .activity-row header,
  .timeline-head,
  .timeline-meta {
    align-items: flex-start;
  }

  .section-heading,
  .timeline-head,
  .timeline-meta {
    flex-direction: column;
  }

  .route-map-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .route-map-tools {
    justify-content: flex-start;
    margin-left: 0;
  }

  .route-map-source {
    text-align: left;
  }

  body[data-auth="signed-out"] .app-grid {
    align-items: start;
    padding-top: 28px;
  }
}

@media (max-width: 520px) {
  body {
    font-size: 14px;
  }

  .panel,
  .rail-card,
  .insights-panel,
  .personal-insights-panel,
  .backfill-panel,
  .overview-panel,
  .overview-summary-panel,
  .activity-detail,
  .composer,
  .faq-panel {
    padding: 14px;
  }

  .brand-mark {
    width: 30px;
    height: 30px;
  }

  .brand-wording .eyebrow {
    font-size: 1rem;
  }

  .activity-row header {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .route-map-canvas {
    min-height: 240px;
  }

  .route-map-svg {
    height: 240px;
  }

  .route-map-leaflet {
    height: 280px;
  }

  .route-line-shadow {
    stroke-width: 22;
  }

  .route-line {
    stroke-width: 13;
  }

  .activity-chip {
    grid-column: 2;
  }

  .section-actions,
  .action-row,
  .preview-actions,
  .review-actions {
    width: 100%;
  }

  .section-actions > *,
  .action-row > *,
  .preview-actions > *,
  .review-actions > * {
    flex: 1 1 100%;
  }
}