:root {
  --cds-background: #ffffff;
  --cds-layer-01: #f4f4f4;
  --cds-layer-02: #e0e0e0;
  --cds-text-primary: #161616;
  --cds-text-secondary: #525252;
  --cds-text-helper: #6f6f6f;
  --cds-border-subtle: #c6c6c6;
  --cds-interactive: #0f62fe;
  --cds-interactive-hover: #0353e9;
  --cds-interactive-active: #002d9c;
  --cds-link-hover: #0043ce;
  --cds-support-error: #da1e28;
  --cds-support-success: #24a148;
  --cds-support-warning: #f1c21b;
  --cds-focus: #0f62fe;
  --font-sans: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", Menlo, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--cds-background);
  color: var(--cds-text-primary);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
}

button,
input,
select {
  font: inherit;
}

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

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 2px solid var(--cds-focus);
  outline-offset: 2px;
}

[hidden] {
  display: none !important;
}

.masthead {
  align-items: center;
  background: #161616;
  color: #f4f4f4;
  display: flex;
  height: 48px;
  padding: 0 32px;
}

.brand {
  align-items: center;
  color: #ffffff;
  display: flex;
  font-size: 16px;
  font-weight: 600;
  gap: 12px;
  text-decoration: none;
}

.brand-mark {
  align-items: center;
  background: #ffffff;
  color: #161616;
  display: inline-flex;
  font-family: var(--font-mono);
  font-size: 12px;
  height: 24px;
  justify-content: center;
  letter-spacing: -0.5px;
  width: 32px;
}

.masthead-label {
  border-left: 1px solid #525252;
  color: #c6c6c6;
  font-size: 14px;
  margin-left: 16px;
  padding-left: 16px;
}

.github-link {
  color: #c6c6c6;
  font-size: 14px;
  margin-left: auto;
  padding: 12px 0 12px 24px;
  text-decoration: none;
}

.github-link:hover {
  color: #ffffff;
  text-decoration: underline;
}

main,
footer {
  margin: 0 auto;
  max-width: 1584px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(280px, 1fr);
  min-height: 304px;
}

.hero-copy {
  background: var(--cds-interactive);
  color: #ffffff;
  padding: 40px 8vw 48px 32px;
}

.eyebrow,
.section-kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.32px;
  margin: 0 0 24px;
  text-transform: uppercase;
}

.hero h1 {
  font-size: clamp(42px, 5vw, 68px);
  font-weight: 300;
  letter-spacing: -1.5px;
  line-height: 1.06;
  margin: 0;
  max-width: 920px;
}

.hero-description {
  font-size: 18px;
  font-weight: 300;
  line-height: 1.55;
  margin: 32px 0 0;
  max-width: 690px;
}

.hero-aside {
  align-content: center;
  background: #161616;
  color: #f4f4f4;
  display: grid;
  grid-template-columns: 40px 1fr;
  padding: 40px 32px;
  row-gap: 20px;
}

.hero-aside p {
  margin: 0;
}

.hero-aside .step-number {
  color: #78a9ff;
  font-family: var(--font-mono);
  font-size: 12px;
}

.workspace,
.results {
  padding: 48px 32px 64px;
}

.section-heading {
  align-items: end;
  border-bottom: 1px solid var(--cds-border-subtle);
  display: flex;
  justify-content: space-between;
  margin-bottom: 32px;
  padding-bottom: 24px;
}

.section-kicker {
  color: var(--cds-interactive);
  margin-bottom: 8px;
}

.section-heading h2,
.loading-panel h2 {
  font-size: 36px;
  font-weight: 300;
  line-height: 1.2;
  margin: 0;
}

.section-note {
  color: var(--cds-text-secondary);
  font-size: 14px;
  letter-spacing: 0.16px;
  margin: 0;
}

.target-panel {
  max-width: 760px;
}

.field-label {
  color: var(--cds-text-secondary);
  display: block;
  font-size: 12px;
  letter-spacing: 0.32px;
  margin-bottom: 8px;
}

input,
select {
  background: var(--cds-layer-01);
  border: 0;
  border-bottom: 2px solid #8d8d8d;
  border-radius: 0;
  color: var(--cds-text-primary);
  height: 48px;
  padding: 0 16px;
  width: 100%;
}

input:focus,
select:focus {
  border-bottom-color: var(--cds-focus);
  outline: 2px solid var(--cds-focus);
  outline-offset: -2px;
}

input::placeholder {
  color: #6f6f6f;
}

.helper-text {
  color: var(--cds-text-secondary);
  font-size: 13px;
  letter-spacing: 0.16px;
  margin: 6px 0 0;
}

.questions-toolbar {
  align-items: end;
  display: flex;
  justify-content: space-between;
  margin: 48px 0 24px;
}

.questions-toolbar h3,
.result-block > h3,
.evidence-title-row h3 {
  font-size: 24px;
  font-weight: 400;
  line-height: 1.33;
  margin: 0;
}

.questions-toolbar p {
  color: var(--cds-text-secondary);
  font-size: 14px;
  margin: 4px 0 0;
}

.button {
  align-items: center;
  border: 1px solid transparent;
  border-radius: 0;
  cursor: pointer;
  display: inline-flex;
  font-size: 14px;
  height: 48px;
  justify-content: space-between;
  min-width: 190px;
  padding: 0 16px;
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.button-primary {
  background: var(--cds-interactive);
  color: #ffffff;
}

.button-primary:hover:not(:disabled) {
  background: var(--cds-interactive-hover);
}

.button-primary:active:not(:disabled) {
  background: var(--cds-interactive-active);
}

.button-tertiary {
  background: transparent;
  border-color: var(--cds-interactive);
  color: var(--cds-interactive);
  gap: 12px;
}

.button-tertiary:hover:not(:disabled),
.button-ghost:hover:not(:disabled) {
  background: #edf5ff;
  color: var(--cds-link-hover);
}

.button-ghost {
  background: transparent;
  color: var(--cds-interactive);
  min-width: 0;
}

.questions-list {
  border-top: 1px solid var(--cds-border-subtle);
}

.question-card {
  background: var(--cds-layer-01);
  border-bottom: 1px solid var(--cds-border-subtle);
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
}

.question-index {
  background: #e0e0e0;
  display: flex;
  flex-direction: column;
  gap: 24px;
  justify-content: flex-start;
  padding: 24px 16px 16px;
}

.question-index strong {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
}

.remove-question {
  align-self: flex-start;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--cds-support-error);
  color: var(--cds-support-error);
  cursor: pointer;
  font-size: 13px;
  padding: 8px 0 4px;
  text-align: left;
}

.remove-question:hover {
  background: #fff1f1;
}

.question-content {
  padding: 24px;
}

.question-main-fields {
  display: grid;
  gap: 24px;
  grid-template-columns: 240px minmax(0, 1fr);
}

.type-details {
  border-top: 1px solid var(--cds-border-subtle);
  margin-top: 24px;
  padding-top: 24px;
}

.type-details-header {
  align-items: center;
  display: flex;
  justify-content: space-between;
  margin-bottom: 16px;
}

.type-details-header p {
  color: var(--cds-text-secondary);
  font-size: 13px;
  margin: 0;
}

.small-action {
  background: transparent;
  border: 0;
  color: var(--cds-interactive);
  cursor: pointer;
  font-size: 13px;
  padding: 8px;
}

.small-action:hover {
  text-decoration: underline;
}

.option-row,
.level-row {
  align-items: end;
  display: grid;
  gap: 16px;
  margin-top: 12px;
}

.option-row {
  grid-template-columns: minmax(120px, 0.65fr) minmax(180px, 1.35fr) 48px;
}

.level-row {
  grid-template-columns: minmax(0, 1fr) 48px;
}

.icon-button {
  align-items: center;
  background: transparent;
  border: 0;
  color: var(--cds-support-error);
  cursor: pointer;
  display: flex;
  font-size: 20px;
  height: 48px;
  justify-content: center;
  width: 48px;
}

.icon-button:hover:not(:disabled) {
  background: #fff1f1;
}

.inline-notification {
  border-left: 4px solid;
  margin-top: 24px;
  padding: 16px;
}

.inline-notification.error {
  background: #fff1f1;
  border-color: var(--cds-support-error);
  color: #750e13;
}

.submit-row {
  align-items: center;
  border-top: 1px solid var(--cds-border-subtle);
  display: flex;
  justify-content: space-between;
  margin-top: 24px;
  padding-top: 24px;
}

.submit-row p {
  color: var(--cds-text-secondary);
  font-size: 14px;
  margin: 0;
  max-width: 660px;
}

.button-icon {
  font-size: 20px;
  margin-left: 48px;
}

.loading-panel {
  background: #161616;
  color: #f4f4f4;
  display: grid;
  gap: 32px;
  grid-template-columns: 8px 1fr;
  padding: 64px 32px;
}

.loading-panel p:last-child {
  color: #c6c6c6;
  margin-bottom: 0;
}

.loading-line {
  animation: loading-pulse 1.2s ease-in-out infinite alternate;
  background: #78a9ff;
  min-height: 120px;
}

@keyframes loading-pulse {
  from {
    opacity: 0.25;
  }
  to {
    opacity: 1;
  }
}

.results {
  background: var(--cds-layer-01);
}

.results-heading {
  border-color: #a8a8a8;
}

.result-summary {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 64px;
}

.summary-stat {
  background: #ffffff;
  border-right: 1px solid var(--cds-layer-02);
  min-height: 112px;
  padding: 16px;
}

.summary-stat:last-child {
  border-right: 0;
}

.summary-stat span {
  color: var(--cds-text-secondary);
  display: block;
  font-size: 12px;
  letter-spacing: 0.32px;
  margin-bottom: 16px;
}

.summary-stat strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 400;
  overflow-wrap: anywhere;
}

.result-block + .result-block {
  margin-top: 64px;
}

.answers-grid {
  display: grid;
  gap: 1px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 24px;
}

.answer-card {
  background: #ffffff;
  min-height: 220px;
  padding: 24px;
}

.answer-number {
  color: var(--cds-interactive);
  font-family: var(--font-mono);
  font-size: 12px;
  margin: 0 0 24px;
}

.answer-question {
  font-size: 16px;
  margin: 0;
}

.answer-value {
  font-size: 32px;
  font-weight: 300;
  line-height: 1.2;
  margin: 24px 0 8px;
  overflow-wrap: anywhere;
}

.answer-meta {
  color: var(--cds-text-secondary);
  font-family: var(--font-mono);
  font-size: 12px;
  margin: 0;
}

.probabilities {
  border-top: 1px solid var(--cds-layer-02);
  margin-top: 24px;
  padding-top: 12px;
}

.probability-row {
  display: flex;
  font-size: 12px;
  justify-content: space-between;
  margin-top: 4px;
}

.evidence-title-row {
  align-items: center;
  display: flex;
  justify-content: space-between;
}

.tag {
  background: #d0e2ff;
  border-radius: 24px;
  color: #0043ce;
  font-size: 12px;
  padding: 4px 10px;
}

.evidence-list {
  border-top: 1px solid #a8a8a8;
  margin-top: 24px;
}

.evidence-item {
  background: #ffffff;
  border-bottom: 1px solid var(--cds-layer-02);
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(180px, 0.7fr) minmax(0, 1.3fr);
  padding: 24px;
}

.evidence-source a {
  color: var(--cds-interactive);
  display: inline-block;
  font-size: 16px;
  margin-bottom: 8px;
  overflow-wrap: anywhere;
  text-decoration: none;
}

.evidence-source a:hover {
  color: var(--cds-link-hover);
  text-decoration: underline;
}

.evidence-url,
.evidence-meta {
  color: var(--cds-text-secondary);
  font-family: var(--font-mono);
  font-size: 11px;
  overflow-wrap: anywhere;
}

.evidence-excerpt {
  color: var(--cds-text-secondary);
  font-size: 14px;
  letter-spacing: 0.16px;
  margin: 0;
  white-space: pre-line;
}

.evidence-warning {
  color: #8e6a00;
  font-size: 12px;
  margin: 12px 0 0;
}

.empty-state {
  background: #ffffff;
  color: var(--cds-text-secondary);
  margin-top: 24px;
  padding: 24px;
}

footer {
  background: #161616;
  color: #c6c6c6;
  display: flex;
  font-size: 13px;
  justify-content: space-between;
  padding: 32px;
}

footer p {
  margin: 0;
}

@media (max-width: 1055px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .hero-aside {
    grid-template-columns: 40px 1fr 40px 1fr 40px 1fr;
    padding: 32px;
  }

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

  .summary-stat:nth-child(2) {
    border-right: 0;
  }

  .summary-stat:nth-child(-n + 2) {
    border-bottom: 1px solid var(--cds-layer-02);
  }
}

@media (max-width: 671px) {
  .masthead {
    padding: 0 16px;
  }

  .masthead-label {
    display: none;
  }

  .hero-copy {
    padding: 48px 16px 56px;
  }

  .hero h1 {
    font-size: 40px;
    letter-spacing: -0.8px;
  }

  .hero-description {
    font-size: 16px;
  }

  .hero-aside {
    grid-template-columns: 32px 1fr;
    padding: 32px 16px;
  }

  .workspace,
  .results {
    padding: 48px 16px 64px;
  }

  .section-heading,
  .questions-toolbar,
  .submit-row {
    align-items: stretch;
    flex-direction: column;
    gap: 24px;
  }

  .section-heading h2,
  .loading-panel h2 {
    font-size: 30px;
  }

  .button {
    width: 100%;
  }

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

  .question-index {
    align-items: center;
    flex-direction: row;
    min-height: 56px;
    padding: 8px 16px;
  }

  .question-main-fields,
  .option-row,
  .level-row,
  .answers-grid,
  .evidence-item {
    grid-template-columns: 1fr;
  }

  .icon-button {
    justify-self: end;
  }

  .result-summary {
    grid-template-columns: 1fr;
  }

  .summary-stat {
    border-bottom: 1px solid var(--cds-layer-02);
    border-right: 0;
  }

  .summary-stat:last-child {
    border-bottom: 0;
  }

  .loading-panel {
    padding: 48px 16px;
  }

  footer {
    flex-direction: column;
    gap: 8px;
    padding: 32px 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .loading-line {
    animation: none;
  }
}