:root {
  color-scheme: dark;
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  line-height: 1.5;

  /* Material Design 3 dark color roles, kept local to this static page. */
  --md-sys-color-surface: #141218;
  --md-sys-color-surface-container: #211f26;
  --md-sys-color-surface-container-high: #2b2930;
  --md-sys-color-primary: #d0bcff;
  --md-sys-color-primary-container: #4f378b;
  --md-sys-color-secondary: #ccc2dc;
  --md-sys-color-secondary-container: #4a4458;
  --md-sys-color-tertiary: #efb8c8;
  --md-sys-color-tertiary-container: #633b48;
  --md-sys-color-error: #f2b8b5;
  --md-sys-color-error-container: #8c1d18;
  --md-sys-color-on-surface: #e6e1e5;
  --md-sys-color-on-surface-variant: #cac4d0;
  --md-sys-color-outline: #938f99;
  --md-sys-color-outline-variant: #49454f;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-8: 3rem;
  --radius-small: 0.5rem;
  --radius-medium: 0.75rem;
  --radius-large: 1rem;
  --focus-ring: 0 0 0 3px var(--md-sys-color-surface),
    0 0 0 6px var(--md-sys-color-primary);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--md-sys-color-surface);
}

body {
  background: radial-gradient(
      circle at 88% 0%,
      rgb(208 188 255 / 10%),
      transparent 28rem
    ),
    var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  margin: 0;
  min-width: 20rem;
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
select {
  cursor: pointer;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
summary:focus-visible,
textarea:focus-visible {
  box-shadow: var(--focus-ring);
  outline: 0;
}

button {
  background: var(--md-sys-color-surface-container-high);
  border: 1px solid var(--md-sys-color-outline);
  border-radius: 999px;
  color: var(--md-sys-color-primary);
  font-weight: 700;
  min-height: 2.75rem;
  padding: 0.625rem var(--space-4);
}

button:hover:not(:disabled) {
  background: #36323d;
}

button:disabled {
  color: var(--md-sys-color-outline);
  cursor: not-allowed;
  opacity: 0.8;
}

.button-primary {
  background: var(--md-sys-color-primary);
  border-color: var(--md-sys-color-primary);
  color: #381e72;
  padding-inline: var(--space-5);
}

.button-primary:hover:not(:disabled) {
  background: #e3d7ff;
}

code {
  background: #302d37;
  border-radius: var(--radius-small);
  color: var(--md-sys-color-secondary);
  overflow-wrap: anywhere;
  padding: 0.125rem var(--space-1);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  color: var(--md-sys-color-on-surface);
  line-height: 1.2;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  letter-spacing: -0.035em;
  margin-bottom: var(--space-3);
}

h2 {
  font-size: 1.2rem;
  margin-bottom: var(--space-2);
}

h3 {
  font-size: 1rem;
  margin-bottom: var(--space-2);
}

.app-shell {
  margin: 0 auto;
  max-width: 90rem;
  padding: var(--space-5) var(--space-4) var(--space-8);
}

.hero {
  align-items: center;
  display: grid;
  gap: var(--space-6);
  grid-template-columns: minmax(0, 1fr) minmax(12rem, 17rem);
  margin-bottom: var(--space-6);
  padding-right: var(--space-6);
}

.hero-copy {
  max-width: 48rem;
}

.eyebrow,
.section-kicker {
  color: var(--md-sys-color-primary);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-2);
  text-transform: uppercase;
}

.product-statement {
  color: var(--md-sys-color-secondary);
  font-size: 1.125rem;
  font-weight: 650;
  margin-bottom: var(--space-4);
}

.notice {
  align-items: center;
  background: var(--md-sys-color-tertiary-container);
  border: 1px solid var(--md-sys-color-tertiary);
  border-radius: var(--radius-medium);
  color: #ffd9e2;
  display: inline-flex;
  font-weight: 800;
  margin-bottom: var(--space-3);
  padding: var(--space-2) var(--space-3);
}

.local-boundary {
  color: var(--md-sys-color-on-surface-variant);
  margin-bottom: 0;
}

.assurance-stack {
  display: grid;
  gap: 0;
  justify-self: end;
  max-width: 17rem;
  padding: var(--space-4);
  transform: rotateX(55deg) rotateZ(-35deg);
  transform-origin: center;
}

.assurance-layer {
  align-items: center;
  border: 1px solid var(--md-sys-color-outline);
  color: var(--md-sys-color-on-surface);
  display: flex;
  font-size: 0.78rem;
  font-weight: 800;
  height: 3.1rem;
  justify-content: center;
  letter-spacing: 0.05em;
  margin: 0.25rem 0;
  min-width: 11.5rem;
  padding: var(--space-2) var(--space-3);
  text-transform: uppercase;
}

.assurance-layer-markdown {
  background: var(--md-sys-color-primary-container);
  box-shadow: 0 0.4rem 0 #31204e;
}

.assurance-layer-policy {
  background: var(--md-sys-color-secondary-container);
  box-shadow: 0 0.4rem 0 #292433;
}

.assurance-layer-findings {
  background: var(--md-sys-color-tertiary-container);
  box-shadow: 0 0.4rem 0 #3c222c;
}

.workbench {
  display: grid;
  gap: var(--space-5);
  grid-template-columns: repeat(12, minmax(0, 1fr));
}

.authoring-pane {
  display: grid;
  gap: var(--space-4);
  grid-column: span 7;
  min-width: 0;
}

.results-pane {
  align-self: start;
  background: var(--md-sys-color-surface-container);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--radius-large);
  display: grid;
  gap: var(--space-4);
  grid-column: span 5;
  min-width: 0;
  padding: var(--space-5);
}

.surface-card {
  background: var(--md-sys-color-surface-container);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--radius-large);
  padding: var(--space-4);
}

.samples {
  display: grid;
  gap: var(--space-3);
}

.sample-controls {
  align-items: end;
  display: grid;
  gap: var(--space-2);
  grid-template-columns: minmax(12rem, 1fr) auto auto;
}

.sample-controls label {
  grid-column: 1 / -1;
}

.example-details {
  border-left: 0.35rem solid var(--md-sys-color-secondary);
}

.example-details > :last-child,
.section-intro > :last-child {
  margin-bottom: 0;
}

.result-comparison {
  color: var(--md-sys-color-on-surface-variant);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-5);
}

.result-comparison p {
  margin-bottom: 0;
}

#playground-regression {
  color: var(--md-sys-color-secondary);
  font-weight: 700;
  margin-bottom: 0;
}

label,
legend {
  color: var(--md-sys-color-on-surface);
  font-weight: 700;
}

input,
select,
textarea {
  background: var(--md-sys-color-surface-container-high);
  border: 1px solid var(--md-sys-color-outline);
  border-radius: var(--radius-small);
  color: var(--md-sys-color-on-surface);
  display: block;
  margin-top: var(--space-1);
  max-width: 100%;
  padding: 0.75rem;
  width: 100%;
}

input:hover,
select:hover,
textarea:hover {
  border-color: var(--md-sys-color-primary);
}

textarea {
  line-height: 1.45;
  resize: vertical;
}

textarea[readonly] {
  background: #1b1920;
  color: var(--md-sys-color-on-surface-variant);
}

.policy-active {
  align-items: start;
  display: flex;
  gap: var(--space-4);
  justify-content: space-between;
}

#policy-summary {
  color: var(--md-sys-color-secondary);
  font-size: 0.875rem;
  margin: 0;
  max-width: 24rem;
  text-align: right;
}

.policy-details {
  margin-top: var(--space-3);
}

.policy-details summary {
  color: var(--md-sys-color-primary);
  cursor: pointer;
  font-weight: 800;
  padding: var(--space-2) 0;
}

.policy-fields {
  border: 0;
  display: grid;
  gap: var(--space-2);
  margin: var(--space-3) 0 0;
  min-inline-size: 0;
  padding: 0;
}

.policy-fields legend {
  margin-bottom: var(--space-3);
}

.actions {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

#error-message {
  color: var(--md-sys-color-error);
  flex-basis: 100%;
  font-weight: 800;
  margin: 0;
}

.result-header {
  align-items: start;
  display: flex;
  gap: var(--space-3);
  justify-content: space-between;
}

#result-summary {
  color: var(--md-sys-color-on-surface-variant);
  font-weight: 700;
  margin: 0;
  text-align: right;
}

.severity-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: 0;
}

.severity-chip {
  align-items: center;
  border: 1px solid currentcolor;
  border-radius: 999px;
  display: inline-flex;
  font-size: 0.875rem;
  font-weight: 800;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
}

.severity-chip dt,
.severity-chip dd {
  margin: 0;
}

.severity-chip-blocking {
  background: #47211f;
  color: var(--md-sys-color-error);
}

.severity-chip-advisory {
  background: #3d3038;
  color: var(--md-sys-color-secondary);
}

#findings {
  display: grid;
  gap: var(--space-4);
}

.finding-group {
  display: grid;
  gap: var(--space-2);
}

.finding-group-title {
  align-items: center;
  display: flex;
  font-size: 0.95rem;
  gap: var(--space-2);
  margin: 0;
}

.finding-group-title::before {
  background: currentcolor;
  border-radius: 999px;
  content: "";
  height: 0.5rem;
  width: 0.5rem;
}

.finding-group-blocking .finding-group-title {
  color: var(--md-sys-color-error);
}

.finding-group-advisory .finding-group-title {
  color: var(--md-sys-color-secondary);
}

.finding-items {
  display: grid;
  gap: var(--space-2);
  list-style: none;
  margin: 0;
  padding: 0;
}

.finding {
  background: var(--md-sys-color-surface-container-high);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-left: 0.35rem solid var(--md-sys-color-outline);
  border-radius: var(--radius-small);
  overflow-wrap: anywhere;
  padding: var(--space-3);
}

.finding-blocking {
  border-left-color: var(--md-sys-color-error);
}

.finding-advisory {
  border-left-color: var(--md-sys-color-secondary);
}

.finding-title {
  align-items: center;
  display: flex;
  gap: var(--space-2);
}

.finding-icon {
  align-items: center;
  border: 1px solid currentcolor;
  border-radius: 50%;
  display: inline-flex;
  flex: 0 0 auto;
  font-size: 0.75rem;
  height: 1.25rem;
  justify-content: center;
  width: 1.25rem;
}

.finding-blocking .finding-icon,
.finding-blocking .severity-label {
  color: var(--md-sys-color-error);
}

.finding-advisory .finding-icon,
.finding-advisory .severity-label {
  color: var(--md-sys-color-secondary);
}

.severity-label {
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: capitalize;
}

.finding-message,
.finding-instruction {
  color: var(--md-sys-color-on-surface-variant);
  margin: var(--space-2) 0 0;
}

.finding-instruction {
  font-size: 0.9rem;
}

.corrected-preview {
  margin-top: var(--space-2);
}

.corrected-preview > p {
  color: var(--md-sys-color-on-surface-variant);
}

.visually-hidden {
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  height: 1px;
  overflow: hidden;
  position: absolute;
  white-space: nowrap;
  width: 1px;
}

@media (max-width: 58rem) {
  .hero {
    grid-template-columns: 1fr;
  }

  .assurance-stack {
    justify-self: start;
    margin-left: var(--space-3);
  }

  .authoring-pane,
  .results-pane {
    grid-column: 1 / -1;
  }
}

@media (max-width: 44rem) {
  .app-shell {
    padding: var(--space-4) var(--space-3) var(--space-6);
  }

  .hero {
    gap: var(--space-4);
    padding-right: 0;
  }

  .assurance-stack {
    margin: 0;
    transform: rotateX(50deg) rotateZ(-30deg) scale(0.88);
    transform-origin: left center;
  }

  .sample-controls {
    align-items: stretch;
    grid-template-columns: 1fr;
  }

  .sample-controls label {
    grid-column: auto;
  }

  .policy-active,
  .result-header {
    display: grid;
    gap: var(--space-2);
  }

  #policy-summary,
  #result-summary {
    max-width: none;
    text-align: left;
  }

  .results-pane,
  .surface-card {
    padding: var(--space-3);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .assurance-stack,
  .assurance-layer {
    transform: none;
  }
}