:root {
  color-scheme: dark;
  --bg: #11100d;
  --bg-raised: #191814;
  --bg-panel: #20201a;
  --line: #3a3931;
  --line-strong: #5a574b;
  --text: #f5f2e8;
  --muted: #a9a495;
  --soft: #d4cfbf;
  --accent: #35d6c6;
  --accent-2: #ffbe55;
  --accent-3: #ef6f5a;
  --good: #88d36a;
  --shadow: rgba(0, 0, 0, 0.38);
  --radius: 8px;
  --radius-sm: 6px;
  --topbar-height: 72px;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--text);
  background:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    var(--bg);
  background-size: 44px 44px;
  letter-spacing: 0;
}

button,
select,
input {
  font: inherit;
}

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

.app-shell {
  min-height: 100svh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--topbar-height);
  padding: 0 24px;
  border-bottom: 1px solid rgba(245, 242, 232, 0.1);
  background: rgba(17, 16, 13, 0.86);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  color: var(--accent);
  font-weight: 800;
}

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

.brand strong {
  font-size: 15px;
  line-height: 1.1;
}

.brand small {
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
}

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

.icon-button,
.text-button,
.run-button,
.utility-button,
.segment,
.gate-button {
  border: 1px solid var(--line);
  color: var(--text);
  background: var(--bg-raised);
  cursor: pointer;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background-color 160ms ease,
    color 160ms ease;
}

.icon-button {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  color: var(--soft);
  font-weight: 700;
}

.text-button {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  text-decoration: none;
  font-size: 13px;
}

.mode-toggle {
  color: #071512;
  border-color: var(--accent);
  background: var(--accent);
  font-weight: 800;
}

.utility-button {
  min-height: 32px;
  padding: 0 10px;
  border-radius: 6px;
  color: var(--soft);
  background: var(--bg-raised);
  font-size: 12px;
  font-weight: 800;
}

.icon-button:hover,
.text-button:hover,
.run-button:hover,
.utility-button:hover,
.segment:hover,
.gate-button:hover {
  transform: translateY(-1px);
  border-color: var(--accent);
}

.workspace {
  display: grid;
  grid-template-columns: minmax(240px, 300px) minmax(0, 1fr) minmax(260px, 340px);
  gap: 1px;
  min-height: calc(100svh - var(--topbar-height));
  background: rgba(245, 242, 232, 0.08);
}

body.simple-mode .workspace {
  display: block;
  background: var(--bg);
}

body.simple-mode .experiment-panel,
body.simple-mode .inspector,
body.simple-mode .topbar-actions .text-button[href] {
  display: none;
}

body.simple-mode .main-stage {
  max-width: 1180px;
  min-height: calc(100svh - var(--topbar-height));
  margin: 0 auto;
}

body.simple-mode .tutorial-panel.is-active {
  margin-top: 8px;
}

body.simple-mode .starter-flow {
  display: grid;
  gap: 14px;
  margin: 8px 0 22px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(53, 214, 198, 0.08), transparent 48%),
    #151410;
}

body.simple-mode .tutorial-panel:not(.is-active),
body.simple-mode .circuit-section,
body.simple-mode .visual-grid,
body.simple-mode .report-parameters,
body.simple-mode .report-comparison-panel {
  display: none;
}

body.simple-mode .preset-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

body.simple-mode .preset-card {
  min-height: 118px;
}

body.simple-mode .lesson-panel {
  margin-bottom: 24px;
}

body.simple-mode .report-section {
  margin-top: 0;
  margin-bottom: 24px;
}

body.simple-mode .report-layout {
  grid-template-columns: minmax(0, 1fr);
}

body.simple-mode .report-interpretation {
  padding: 16px;
}

body.simple-mode .report-list div {
  min-height: 54px;
  padding: 12px;
  font-size: 13px;
}

.experiment-panel,
.main-stage,
.inspector {
  background: rgba(17, 16, 13, 0.92);
}

.experiment-panel,
.inspector {
  padding: 22px;
}

.experiment-panel {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.main-stage {
  min-width: 0;
  padding: 22px;
}

.panel-heading h1,
.section-heading h2 {
  margin: 0;
  color: var(--text);
  font-weight: 760;
  letter-spacing: 0;
}

.panel-heading h1 {
  margin-top: 8px;
  max-width: 260px;
  font-size: 24px;
  line-height: 1.18;
}

.section-heading {
  display: grid;
  gap: 6px;
  margin-bottom: 16px;
}

.section-heading.inline {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
}

.section-heading.dense {
  margin-bottom: 0;
}

.section-heading h2 {
  font-size: 18px;
  line-height: 1.2;
}

.eyebrow {
  margin: 0;
  color: var(--accent);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.segmented-control {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #151410;
}

.segment {
  min-width: 0;
  min-height: 38px;
  padding: 0 8px;
  border-color: transparent;
  border-radius: 6px;
  color: var(--muted);
  background: transparent;
  font-size: 13px;
  font-weight: 700;
}

.segment.is-active {
  color: #071512;
  background: var(--accent);
}

.field {
  display: grid;
  gap: 10px;
  color: var(--muted);
  font-size: 13px;
}

.is-hidden {
  display: none !important;
}

.field span {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.field strong {
  color: var(--text);
}

.field select {
  width: 100%;
  min-height: 42px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  background: var(--bg-raised);
}

.field input[type="number"],
.range-grid input[type="number"] {
  width: 100%;
  min-height: 38px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--text);
  background: var(--bg-raised);
}

.field input[type="range"] {
  accent-color: var(--accent);
}

.noise-controls,
.seed-controls,
.sweep-controls {
  display: grid;
  gap: 14px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #151410;
}

.toggle-field {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 32px;
  color: var(--muted);
  font-size: 13px;
}

.toggle-field input {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}

.gate-controls {
  display: grid;
  gap: 10px;
}

.qaoa-controls,
.vqe-controls,
.qaoa-layer-2 {
  display: grid;
  gap: 18px;
}

.range-grid {
  display: grid;
  grid-template-columns: minmax(74px, 1fr) minmax(58px, 0.8fr);
  gap: 8px;
  align-items: center;
  color: var(--muted);
  font-size: 12px;
}

.range-grid label {
  min-width: 0;
}

.button-pair {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.control-label {
  color: var(--muted);
  font-size: 13px;
}

.gate-palette,
.state-palette {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 6px;
}

.gate-button {
  min-width: 0;
  min-height: 38px;
  padding: 0 6px;
  border-radius: 6px;
  color: var(--soft);
  background: var(--bg-raised);
  font-size: 12px;
  font-weight: 850;
}

.gate-button.is-active {
  color: #071512;
  border-color: var(--accent);
  background: var(--accent);
}

.run-button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 48px;
  padding: 0 16px;
  border-radius: var(--radius);
  background: #f5f2e8;
  color: #151410;
}

.run-button span {
  display: grid;
  place-items: center;
  width: 36px;
  height: 26px;
  border-radius: 999px;
  color: #151410;
  background: var(--accent-2);
  font-size: 12px;
  font-weight: 800;
}

.metric-stack {
  display: grid;
  gap: 1px;
  margin-top: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--line);
}

.metric-stack div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: 50px;
  padding: 0 14px;
  background: var(--bg-raised);
}

.metric-stack.compact {
  margin-top: 0;
}

.metric-stack span {
  color: var(--muted);
  font-size: 12px;
}

.metric-stack strong {
  font-size: 15px;
}

.tutorial-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 18px;
  align-items: center;
  margin-bottom: 22px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-raised);
}

.tutorial-copy {
  display: grid;
  gap: 6px;
  min-width: 0;
}

.tutorial-copy h2,
.tutorial-copy p {
  margin: 0;
}

.tutorial-copy h2 {
  color: var(--text);
  font-size: 18px;
  line-height: 1.2;
}

.tutorial-copy p:not(.eyebrow) {
  color: var(--soft);
  font-size: 13px;
  line-height: 1.45;
}

.tutorial-progress {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.tutorial-dot {
  width: 8px;
  height: 8px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: #151410;
}

.tutorial-dot.is-active {
  border-color: var(--accent);
  background: var(--accent);
}

.tutorial-dot.is-complete {
  border-color: var(--accent-2);
  background: var(--accent-2);
}

.tutorial-actions {
  justify-content: end;
}

.starter-flow {
  display: none;
}

.flow-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.flow-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 5px 10px;
  min-width: 0;
  min-height: 88px;
  padding: 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-raised);
}

.flow-step span {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--accent);
  background: #151410;
  font-size: 12px;
  font-weight: 900;
}

.flow-step strong {
  align-self: center;
  min-width: 0;
  color: var(--text);
  font-size: 14px;
  line-height: 1.25;
}

.flow-step p {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.flow-step.is-active {
  border-color: var(--accent);
  background: #14211f;
}

.flow-step.is-done {
  border-color: rgba(136, 211, 106, 0.48);
}

.flow-step.is-done span {
  color: #071512;
  border-color: var(--good);
  background: var(--good);
}

#starterStatus {
  min-height: 28px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--accent-2);
  background: #151410;
  font-size: 12px;
  font-weight: 900;
}

.learning-section {
  margin-bottom: 22px;
}

#learningPage,
#lessonPanel,
#reportPage {
  scroll-margin-top: calc(var(--topbar-height) + 12px);
}

#learningStatus {
  min-height: 28px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--accent-2);
  background: #151410;
  font-size: 12px;
  font-weight: 900;
}

.learning-layout {
  display: grid;
  grid-template-columns: minmax(240px, 0.72fr) minmax(360px, 1.28fr);
  gap: 12px;
  align-items: start;
}

.learning-panel {
  display: grid;
  gap: 12px;
  min-width: 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #151410;
}

.papers-panel {
  grid-row: span 2;
  scroll-margin-top: calc(var(--topbar-height) + 12px);
}

.learning-panel-heading {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 12px;
}

.learning-panel-heading h3,
.learning-panel-heading span {
  margin: 0;
}

.learning-panel-heading h3 {
  color: var(--text);
  font-size: 15px;
  line-height: 1.2;
}

.learning-panel-heading span {
  color: var(--muted);
  font-size: 11px;
  font-weight: 800;
}

.roadmap-list,
.paper-list,
.research-note {
  display: grid;
  gap: 9px;
}

.roadmap-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  min-width: 0;
  min-height: 74px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg-raised);
}

.roadmap-item.is-complete {
  border-color: rgba(136, 211, 106, 0.48);
}

.roadmap-step {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--accent);
  background: #11100d;
  font-size: 11px;
  font-weight: 900;
}

.roadmap-item.is-complete .roadmap-step {
  color: #071512;
  border-color: var(--good);
  background: var(--good);
}

.roadmap-item strong,
.roadmap-item p {
  margin: 0;
}

.roadmap-item strong {
  color: var(--text);
  font-size: 13px;
  line-height: 1.25;
}

.roadmap-item p {
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
}

.paper-card {
  display: grid;
  gap: 10px;
  min-width: 0;
  padding: 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg-raised);
}

.paper-card.is-complete {
  border-color: rgba(136, 211, 106, 0.5);
}

.paper-card header {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 10px;
  align-items: start;
}

.paper-area {
  width: fit-content;
  padding: 4px 7px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--accent);
  background: #151410;
  font-size: 10px;
  font-weight: 900;
}

.paper-status {
  width: fit-content;
  padding: 4px 7px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: #151410;
  font-size: 10px;
  font-weight: 900;
  white-space: nowrap;
}

.paper-status.is-done {
  color: #071512;
  border-color: var(--good);
  background: var(--good);
}

.paper-card h4,
.paper-card p,
.paper-project,
.paper-next-question {
  margin: 0;
}

.paper-card h4 {
  color: var(--text);
  font-size: 14px;
  line-height: 1.25;
}

.paper-card header p {
  margin-top: 4px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.35;
}

.paper-study-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.paper-study-meta span {
  padding: 6px 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--muted);
  background: #151410;
  font-size: 11px;
  line-height: 1.25;
}

.paper-study-meta strong {
  color: var(--accent-2);
  font-weight: 900;
}

.paper-card > p,
.paper-project,
.paper-next-question,
.research-note p,
.research-note dd {
  color: var(--soft);
  font-size: 12px;
  line-height: 1.48;
}

.paper-project {
  padding: 10px;
  border-left: 3px solid var(--accent-2);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: #181712;
}

.concept-list,
.paper-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.concept-list span {
  padding: 4px 7px;
  border: 1px solid rgba(53, 214, 198, 0.32);
  border-radius: 999px;
  color: var(--accent);
  background: rgba(53, 214, 198, 0.08);
  font-size: 10px;
  font-weight: 850;
}

.checkpoint-list {
  display: grid;
  gap: 7px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.checkpoint-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 8px;
  align-items: start;
  color: var(--soft);
  font-size: 12px;
  line-height: 1.45;
}

.checkpoint-list li span {
  display: grid;
  place-items: center;
  width: 26px;
  height: 24px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--accent);
  background: #151410;
  font-size: 10px;
  font-weight: 900;
}

.paper-next-question {
  padding: 9px 10px;
  border: 1px solid rgba(255, 190, 85, 0.32);
  border-radius: var(--radius-sm);
  background: rgba(255, 190, 85, 0.06);
}

.utility-link {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--soft);
  background: #151410;
  font-size: 12px;
  font-weight: 800;
  text-decoration: none;
}

.utility-link:hover {
  border-color: var(--accent);
  color: var(--text);
}

.research-note dl {
  display: grid;
  gap: 9px;
  margin: 0;
}

.research-note dl div {
  display: grid;
  gap: 4px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg-raised);
}

.research-note dt {
  color: var(--accent);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.research-note dd {
  margin: 0;
}

.preset-gallery {
  margin-bottom: 22px;
}

#presetStatus {
  min-height: 28px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--accent-2);
  background: #151410;
  font-size: 12px;
  font-weight: 800;
}

.preset-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  align-items: start;
}

.preset-group {
  display: grid;
  gap: 10px;
  min-width: 0;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #151410;
}

.preset-group-header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 10px;
  min-width: 0;
}

.preset-group-header h3,
.preset-group-header span {
  margin: 0;
}

.preset-group-header h3 {
  color: var(--text);
  font-size: 14px;
  line-height: 1.2;
}

.preset-group-header span {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.3;
}

.preset-group-header strong {
  flex: 0 0 auto;
  min-width: 34px;
  padding: 4px 7px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--accent-2);
  background: var(--bg-raised);
  font-size: 11px;
  text-align: center;
}

.preset-group-grid {
  display: grid;
  gap: 8px;
}

.preset-card {
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  gap: 8px;
  min-height: 124px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--soft);
  background: var(--bg-raised);
  text-align: left;
  cursor: pointer;
}

.preset-card:hover,
.preset-card.is-active {
  border-color: var(--accent);
}

.preset-card.is-active {
  background: #14211f;
}

.preset-card.is-complete:not(.is-active) {
  border-color: rgba(136, 211, 106, 0.45);
}

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

.preset-card strong {
  color: var(--text);
  font-size: 14px;
  line-height: 1.25;
}

.preset-card span {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.35;
}

.preset-card code {
  align-self: end;
  color: var(--accent-2);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 11px;
}

.preset-tag {
  width: fit-content;
  padding: 4px 7px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--accent);
  background: #151410;
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.preset-status {
  width: fit-content;
  padding: 4px 7px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: #151410;
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.preset-status.is-done {
  color: #071512;
  border-color: var(--good);
  background: var(--good);
}

.lesson-panel {
  display: grid;
  gap: 14px;
  margin-bottom: 22px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(82, 186, 164, 0.08), transparent 44%),
    var(--bg-raised);
}

.lesson-panel.is-complete {
  border-color: rgba(136, 211, 106, 0.42);
}

.lesson-heading {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 12px;
}

.lesson-actions {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 8px;
}

.lesson-heading h2,
.lesson-heading p,
.lesson-grid p,
.lesson-question {
  margin: 0;
}

.lesson-heading h2 {
  color: var(--text);
  font-size: 19px;
  line-height: 1.2;
}

#lessonStatus {
  flex: 0 0 auto;
  min-height: 28px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--accent-2);
  background: #151410;
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

#lessonStatus.is-done {
  color: #071512;
  border-color: var(--good);
  background: var(--good);
}

.primary-action {
  color: #071512;
  border-color: var(--accent);
  background: var(--accent);
}

.lesson-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.lesson-grid div {
  display: grid;
  align-content: start;
  gap: 6px;
  min-width: 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #151410;
}

.lesson-grid span {
  color: var(--accent);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lesson-grid p {
  color: var(--soft);
  font-size: 12px;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.lesson-question {
  padding-top: 2px;
  color: var(--text);
  font-size: 13px;
  font-weight: 750;
  line-height: 1.45;
}

.circuit-section {
  margin-bottom: 22px;
}

.circuit-board {
  position: relative;
  display: grid;
  gap: 12px;
  min-height: 132px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(90deg, rgba(245, 242, 232, 0.045) 1px, transparent 1px),
    var(--bg-raised);
  background-size: 56px 100%;
  overflow: hidden;
}

.wire {
  display: grid;
  grid-template-columns: 40px 1fr;
  align-items: center;
  min-height: 30px;
}

.wire-label {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.wire-line {
  position: relative;
  height: 30px;
}

.wire-line::before {
  position: absolute;
  top: 50%;
  right: 0;
  left: 0;
  height: 1px;
  background: var(--line-strong);
  content: "";
}

.gate {
  position: absolute;
  top: 2px;
  display: grid;
  place-items: center;
  width: 34px;
  height: 26px;
  border: 1px solid currentColor;
  border-radius: 6px;
  color: var(--accent);
  background: #11100d;
  box-shadow: 0 8px 18px var(--shadow);
  font-size: 12px;
  font-weight: 800;
  animation: gateIn 260ms ease both;
}

.gate.control {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  color: var(--accent-2);
  background: var(--accent-2);
  transform: translate(10px, 6px);
}

.gate.target {
  color: var(--accent-3);
}

.gate.measure {
  color: var(--good);
}

.connector {
  position: absolute;
  width: 2px;
  background: var(--line-strong);
  animation: connectorIn 260ms ease both;
}

.visual-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 360px);
  gap: 22px;
}

.visual-pane {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-raised);
}

.probability-pane {
  min-height: 430px;
}

.phase-pane {
  min-height: 430px;
}

canvas {
  display: block;
  width: 100%;
  max-width: 100%;
  border-radius: 6px;
  background: #151410;
}

#probabilityCanvas {
  height: 360px;
}

#phaseCanvas {
  aspect-ratio: 1;
  height: auto;
}

#blochCanvas {
  aspect-ratio: 1.12;
  height: auto;
  margin-bottom: 10px;
}

.bloch-readout {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 10px;
}

.bloch-readout span {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 30px;
  padding: 0 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--muted);
  background: #151410;
  font-size: 12px;
}

.bloch-readout strong {
  color: var(--text);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 11px;
}

.report-section {
  margin-top: 22px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-raised);
}

.report-summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--line);
}

.report-summary-grid div {
  display: grid;
  gap: 6px;
  min-width: 0;
  min-height: 74px;
  padding: 12px;
  background: #151410;
}

.report-summary-grid span,
.report-panel h3,
.report-params dt {
  color: var(--muted);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.report-summary-grid strong {
  overflow-wrap: anywhere;
  color: var(--text);
  font-size: 15px;
  line-height: 1.25;
}

.report-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 12px;
  margin-top: 12px;
}

.report-panel {
  min-width: 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #151410;
}

.report-panel.wide {
  grid-column: 1 / -1;
}

.report-panel h3 {
  margin: 0 0 12px;
}

.report-params {
  display: grid;
  grid-template-columns: minmax(88px, 0.75fr) minmax(0, 1.25fr);
  gap: 8px 12px;
  margin: 0;
}

.report-params dd {
  min-width: 0;
  margin: 0;
  overflow-wrap: anywhere;
  color: var(--text);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 12px;
}

.report-list,
.report-comparison {
  display: grid;
  gap: 8px;
}

.report-list div,
.report-comparison div {
  display: grid;
  gap: 4px;
  min-width: 0;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--soft);
  background: var(--bg-raised);
  font-size: 12px;
  line-height: 1.4;
  overflow-wrap: anywhere;
}

.report-list div > *,
.report-comparison div > * {
  min-width: 0;
  overflow-wrap: anywhere;
}

.report-comparison strong {
  color: var(--text);
}

#entropyLabel {
  color: var(--soft);
  font-size: 13px;
}

.inspector {
  display: grid;
  align-content: start;
  gap: 22px;
}

.inspector-section {
  min-width: 0;
}

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

.sample-row {
  display: grid;
  grid-template-columns: 46px 1fr 48px;
  align-items: center;
  gap: 10px;
  min-height: 34px;
  color: var(--soft);
  font-size: 12px;
}

.sample-row.qaoa-row {
  grid-template-columns: 46px 1fr 72px;
}

.sample-state {
  color: var(--text);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-weight: 800;
}

.sample-bar {
  height: 7px;
  border-radius: 999px;
  background: #2e2c26;
  overflow: hidden;
}

.sample-bar span {
  display: block;
  width: var(--width);
  height: 100%;
  border-radius: inherit;
  background: var(--accent);
  transition: width 300ms ease;
}

.sweep-output {
  display: grid;
  gap: 12px;
  margin-top: 12px;
}

.comparison-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 12px;
}

.comparison-grid div {
  display: grid;
  gap: 4px;
  min-width: 0;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #151410;
}

.comparison-grid span {
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
}

.comparison-grid strong {
  overflow-wrap: anywhere;
  color: var(--text);
  font-size: 12px;
}

.file-input {
  display: none;
}

.sweep-heatmap {
  display: grid;
  grid-template-columns: repeat(var(--columns, 1), minmax(12px, 1fr));
  gap: 3px;
}

.sweep-cell {
  min-height: 16px;
  border: 1px solid rgba(245, 242, 232, 0.08);
  border-radius: 3px;
  background:
    color-mix(in srgb, var(--accent) calc(var(--score) * 100%), #2e2c26);
}

.sweep-results,
.history-list {
  display: grid;
  gap: 8px;
}

.sweep-row,
.history-row {
  display: grid;
  gap: 6px;
  min-width: 0;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #151410;
  color: var(--soft);
  font-size: 12px;
}

.sweep-row > *,
.history-row > * {
  min-width: 0;
  overflow-wrap: anywhere;
}

.sweep-row strong,
.history-row strong {
  color: var(--text);
}

.sweep-row code,
.history-row code {
  color: var(--accent-2);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 11px;
}

.history-actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.code-pane {
  max-height: 280px;
  margin: 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: auto;
  color: #f1e4c5;
  background: #151410;
  font-size: 12px;
  line-height: 1.55;
}

.code-pane code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.study-list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  list-style: none;
  background: var(--line);
}

.study-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 42px;
  padding: 0 12px;
  background: var(--bg-raised);
  color: var(--soft);
  font-size: 13px;
}

.study-list span {
  color: var(--accent-2);
  font-size: 11px;
  font-weight: 900;
}

@keyframes gateIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes connectorIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    scroll-behavior: auto !important;
    transition-duration: 1ms !important;
  }
}

@media (max-width: 1180px) {
  .workspace {
    grid-template-columns: 280px minmax(0, 1fr);
  }

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

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

  body.simple-mode .preset-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .tutorial-panel {
    grid-template-columns: 1fr;
  }

  .tutorial-actions {
    justify-content: start;
  }

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

@media (max-width: 860px) {
  .topbar {
    padding: 0 14px;
  }

  .workspace {
    display: block;
  }

  .experiment-panel,
  .main-stage,
  .inspector {
    padding: 18px 14px;
    border-bottom: 1px solid rgba(245, 242, 232, 0.08);
  }

  .panel-heading h1 {
    max-width: 100%;
    font-size: 22px;
  }

  .visual-grid,
  .inspector,
  body.simple-mode .preset-grid,
  .preset-grid,
  .learning-layout,
  .flow-steps,
  .lesson-grid,
  .report-layout,
  .report-summary-grid {
    grid-template-columns: 1fr;
  }

  .report-panel.wide {
    grid-column: auto;
  }

  .probability-pane,
  .phase-pane {
    min-height: 0;
  }

  #probabilityCanvas {
    height: 320px;
  }
}

@media (max-width: 520px) {
  .brand small,
  #reportJumpButton,
  .topbar-actions .text-button[href] {
    display: none;
  }

  .mode-toggle {
    min-height: 34px;
    padding: 0 10px;
  }

  #learningJumpButton,
  #tutorialButton {
    min-height: 34px;
    padding: 0 10px;
  }

  .roadmap-item {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .roadmap-item .utility-button {
    grid-column: 2;
    width: fit-content;
  }

  .papers-panel {
    grid-row: auto;
  }

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

  .paper-status {
    grid-column: 2;
  }

  .section-heading.inline {
    align-items: start;
    flex-direction: column;
  }

  .lesson-heading {
    flex-direction: column;
  }

  .lesson-actions {
    width: 100%;
    justify-content: space-between;
  }

  .wire {
    grid-template-columns: 32px 1fr;
  }

  .circuit-board {
    padding: 14px;
    overflow-x: auto;
  }

  .wire-line {
    min-width: 300px;
  }
}