:root {
  color-scheme: dark;
  --background: #0b0f16;
  --surface: #131a24;
  --surface-raised: #192231;
  --surface-soft: #101722;
  --text: #eef3f9;
  --text-muted: #aeb9c8;
  --border: #2c394a;
  --accent: #70b7ff;
  --accent-strong: #9dcbff;
  --accent-contrast: #07101c;
  --success: #7fd8aa;
  --warning: #ffd37a;
  --shadow: 0 18px 50px rgb(0 0 0 / 0.24);
  --radius-small: 0.55rem;
  --radius-medium: 0.9rem;
  --radius-large: 1.35rem;
  --content-width: 72rem;
  --reading-width: 46rem;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--background);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 15% 0%, rgb(59 110 168 / 0.16), transparent 28rem),
    var(--background);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--accent-strong);
  text-underline-offset: 0.2em;
}

a:hover {
  color: #c7e2ff;
}

img,
svg {
  max-width: 100%;
}

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

:focus-visible {
  outline: 3px solid var(--warning);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-small);
  background: var(--text);
  color: var(--background);
  font-weight: 800;
  transform: translateY(-160%);
  transition: transform 120ms ease-out;
}

.skip-link:focus {
  transform: translateY(0);
}

.page-shell {
  width: min(calc(100% - 2rem), var(--content-width));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgb(255 255 255 / 0.08);
  background: rgb(11 15 22 / 0.9);
  backdrop-filter: blur(16px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4.5rem;
  gap: 1.5rem;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text);
  font-size: 1.08rem;
  font-weight: 850;
  text-decoration: none;
  letter-spacing: -0.015em;
}

.site-brand__mark {
  display: grid;
  width: 2.2rem;
  height: 2.2rem;
  place-items: center;
  border: 1px solid rgb(112 183 255 / 0.5);
  border-radius: 0.7rem;
  background: linear-gradient(145deg, #2475bd, #72b9ff);
  color: #06101b;
  font-size: 0.76rem;
  font-weight: 950;
  box-shadow: 0 8px 24px rgb(62 137 207 / 0.25);
}

.primary-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 0.35rem;
}

.primary-nav a {
  padding: 0.55rem 0.75rem;
  border-radius: var(--radius-small);
  color: var(--text-muted);
  font-size: 0.94rem;
  font-weight: 700;
  text-decoration: none;
}

.primary-nav a:hover {
  background: var(--surface-raised);
  color: var(--text);
}

main {
  min-height: calc(100vh - 13rem);
}

.hero {
  padding-block: clamp(4rem, 10vw, 7rem);
}

.hero__inner {
  max-width: 58rem;
}

.eyebrow {
  margin: 0 0 0.85rem;
  color: var(--accent-strong);
  font-size: 0.8rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  line-height: 1.16;
  letter-spacing: -0.025em;
  text-wrap: balance;
}

h1 {
  max-width: 16ch;
  margin: 0;
  font-size: clamp(2.4rem, 7vw, 5rem);
}

h2 {
  margin-top: 0;
  font-size: clamp(1.65rem, 3vw, 2.45rem);
}

h3 {
  font-size: 1.2rem;
}

.lede {
  max-width: 43rem;
  margin: 1.5rem 0 0;
  color: var(--text-muted);
  font-size: clamp(1.06rem, 2.5vw, 1.28rem);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  min-height: 2.9rem;
  align-items: center;
  justify-content: center;
  padding: 0.72rem 1.05rem;
  border: 1px solid transparent;
  border-radius: var(--radius-small);
  background: var(--accent);
  color: var(--accent-contrast);
  font-weight: 850;
  text-decoration: none;
  box-shadow: 0 10px 28px rgb(55 134 205 / 0.22);
}

.button:hover {
  background: #a5d2ff;
  color: #06101b;
}

.button--secondary {
  border-color: var(--border);
  background: var(--surface);
  color: var(--text);
  box-shadow: none;
}

.button--secondary:hover {
  border-color: #50647d;
  background: var(--surface-raised);
  color: var(--text);
}

.section {
  padding-block: clamp(2.75rem, 7vw, 5rem);
}

.section--bordered {
  border-block: 1px solid rgb(255 255 255 / 0.07);
  background: rgb(16 23 34 / 0.72);
}

.section-heading {
  max-width: var(--reading-width);
  margin-bottom: 2rem;
}

.section-heading p,
.prose p,
.card p,
.callout p {
  color: var(--text-muted);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.card {
  padding: 1.4rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-medium);
  background: linear-gradient(160deg, rgb(25 34 49 / 0.96), rgb(17 24 35 / 0.96));
  box-shadow: var(--shadow);
}

.card h2,
.card h3,
.card p:last-child {
  margin-bottom: 0;
}

.card__meta {
  margin: 0 0 0.55rem;
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.card__link {
  display: inline-block;
  margin-top: 0.65rem;
  font-weight: 800;
}

.page-header {
  padding-block: clamp(3.2rem, 8vw, 5.5rem) 2.5rem;
}

.page-header h1 {
  max-width: 18ch;
  font-size: clamp(2.25rem, 6vw, 4rem);
}

.breadcrumbs {
  margin-bottom: 1rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumbs li:not(:last-child)::after {
  margin-left: 0.45rem;
  color: #667489;
  content: "/";
}

.breadcrumbs a {
  color: var(--text-muted);
}

.prose {
  max-width: var(--reading-width);
}

.prose > * + * {
  margin-top: 1.25rem;
}

.prose ul {
  padding-left: 1.25rem;
}

.prose li + li {
  margin-top: 0.45rem;
}

.callout {
  max-width: var(--reading-width);
  padding: 1.2rem 1.3rem;
  border: 1px solid #38516d;
  border-left: 0.3rem solid var(--accent);
  border-radius: var(--radius-medium);
  background: var(--surface-soft);
}

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

.status-list {
  display: grid;
  max-width: 48rem;
  gap: 0.8rem;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}

.status-list li {
  display: grid;
  grid-template-columns: 1.5rem 1fr;
  gap: 0.75rem;
  align-items: start;
  padding: 0.9rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
  background: var(--surface);
}

.status-list__icon {
  color: var(--success);
  font-weight: 900;
}

.site-footer {
  margin-top: 4rem;
  border-top: 1px solid rgb(255 255 255 / 0.08);
  background: #080b10;
}

.site-footer__inner {
  padding-block: 2rem;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.site-footer__inner p {
  margin: 0;
}

.site-footer__inner p + p {
  margin-top: 0.65rem;
}

.site-footer__disclaimer {
  max-width: 50rem;
}

@media (max-width: 48rem) {
  .site-header {
    position: static;
  }

  .site-header__inner {
    align-items: flex-start;
    flex-direction: column;
    padding-block: 0.9rem;
    gap: 0.6rem;
  }

  .primary-nav {
    justify-content: flex-start;
    margin-left: -0.75rem;
  }

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

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

/* Quiz engine */

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

[hidden] {
  display: none !important;
}

.page-header--compact {
  padding-top: clamp(1.5rem, 3vw, 2.5rem);
  padding-bottom: 1.5rem;
}

.section--quiz {
  padding-top: 1rem;
}

.quiz-app {
  min-height: 22rem;
}

.quiz-panel,
.quiz-workspace {
  border: 1px solid var(--border);
  border-radius: var(--radius-large);
  background: rgb(16 23 34 / 0.82);
  box-shadow: var(--shadow);
}

.quiz-panel {
  max-width: 52rem;
  padding: clamp(1.35rem, 4vw, 2.25rem);
}

.quiz-panel--error {
  border-color: #784348;
}

.quiz-panel__heading {
  max-width: var(--reading-width);
}

.quiz-panel__heading h2 {
  margin-bottom: 0.8rem;
}

.quiz-panel__heading p {
  color: var(--text-muted);
}

.quiz-loading {
  margin: 0;
  color: var(--text-muted);
  font-weight: 750;
}

.quiz-setup__form {
  margin-top: 2rem;
}

.quiz-count-options,
.quiz-answer-form fieldset {
  padding: 0;
  border: 0;
}

.quiz-count-options legend {
  margin-bottom: 0.8rem;
  font-weight: 850;
}

.quiz-count-options {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 0 0 1.4rem;
}

.quiz-count-option {
  position: relative;
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  cursor: pointer;
}

.quiz-count-option input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.quiz-count-option span {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  padding: 0.65rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
  background: var(--surface);
  color: var(--text-muted);
  font-weight: 800;
}

.quiz-count-option input:checked + span {
  border-color: var(--accent);
  background: rgb(112 183 255 / 0.14);
  color: var(--text);
}

.quiz-count-option input:focus-visible + span {
  outline: 3px solid var(--warning);
  outline-offset: 3px;
}

.quiz-setup__notes {
  display: grid;
  gap: 0.25rem;
  margin-top: 1.5rem;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.quiz-setup__notes p {
  margin: 0;
}

.quiz-workspace {
  overflow: hidden;
}

.quiz-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  padding: 1rem 1.2rem;
  border-bottom: 1px solid var(--border);
  background: rgb(19 26 36 / 0.9);
}

.quiz-toolbar__progress {
  flex: 1;
  max-width: 45rem;
}

.quiz-toolbar__labels {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.4rem 1rem;
  margin-bottom: 0.45rem;
}

.quiz-toolbar__labels span {
  color: var(--text-muted);
  font-size: 0.88rem;
}

.quiz-toolbar progress {
  display: block;
  width: 100%;
  height: 0.65rem;
  overflow: hidden;
  border: 0;
  border-radius: 999px;
  background: #263344;
  accent-color: var(--accent);
}

.quiz-toolbar progress::-webkit-progress-bar {
  border-radius: 999px;
  background: #263344;
}

.quiz-toolbar progress::-webkit-progress-value {
  border-radius: 999px;
  background: var(--accent);
}

.quiz-toolbar progress::-moz-progress-bar {
  border-radius: 999px;
  background: var(--accent);
}

.quiz-toolbar__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  justify-content: flex-end;
}

.quiz-flag-button {
  min-width: 10.5rem;
}

.quiz-flag-button.is-flagged {
  border-color: var(--warning);
  background: rgb(255 211 122 / 0.12);
  color: var(--warning);
}

.quiz-layout {
  display: grid;
  grid-template-columns: minmax(12rem, 16rem) minmax(0, 1fr);
  min-height: 34rem;
}

.quiz-sidebar {
  padding: 1.2rem;
  border-right: 1px solid var(--border);
  background: rgb(11 15 22 / 0.42);
}

.quiz-navigator summary {
  cursor: pointer;
  color: var(--text);
  font-weight: 850;
}

.quiz-navigator__help {
  margin: 0.7rem 0 1rem;
  color: var(--text-muted);
  font-size: 0.82rem;
  line-height: 1.45;
}

.quiz-navigator__grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(2.25rem, 1fr));
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.quiz-navigator__button {
  position: relative;
  display: grid;
  width: 100%;
  min-width: 2.25rem;
  min-height: 2.4rem;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 0.45rem;
  background: var(--surface);
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.84rem;
  font-weight: 850;
}

.quiz-navigator__button:hover {
  border-color: #526a86;
  color: var(--text);
}

.quiz-navigator__button.is-answered::after,
.quiz-navigator__button.is-flagged::before {
  position: absolute;
  width: 0.42rem;
  height: 0.42rem;
  border-radius: 999px;
  content: "";
}

.quiz-navigator__button.is-answered::after {
  right: 0.22rem;
  bottom: 0.22rem;
  background: var(--success);
}

.quiz-navigator__button.is-flagged::before {
  top: 0.22rem;
  right: 0.22rem;
  background: var(--warning);
}

.quiz-navigator__button.is-current {
  border-color: var(--accent);
  background: rgb(112 183 255 / 0.16);
  color: var(--text);
  box-shadow: inset 0 0 0 1px var(--accent);
}

.quiz-question-card {
  padding: clamp(1.25rem, 4vw, 2.4rem);
}

.quiz-question-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 1rem;
  color: var(--accent-strong);
  font-size: 0.82rem;
  font-weight: 800;
}

.quiz-question-card__heading {
  max-width: 46rem;
  margin-bottom: 1rem;
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  line-height: 1.4;
  text-wrap: pretty;
}

.quiz-question-card__instruction {
  max-width: 44rem;
  margin: 0 0 1.2rem;
  padding: 0.7rem 0.85rem;
  border-left: 0.25rem solid var(--accent);
  background: rgb(112 183 255 / 0.08);
  color: var(--text-muted);
}

.quiz-answer-form {
  max-width: 48rem;
  margin-top: 1.5rem;
}

.quiz-answers {
  display: grid;
  gap: 0.75rem;
}

.quiz-answer {
  display: grid;
  grid-template-columns: auto auto minmax(0, 1fr);
  gap: 0.8rem;
  align-items: start;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
  background: var(--surface);
  cursor: pointer;
}

.quiz-answer:hover {
  border-color: #526a86;
  background: var(--surface-raised);
}

.quiz-answer.is-selected {
  border-color: var(--accent);
  background: rgb(112 183 255 / 0.11);
}

.quiz-answer__input {
  width: 1.15rem;
  height: 1.15rem;
  margin: 0.2rem 0 0;
  accent-color: var(--accent);
}

.quiz-answer__letter {
  display: grid;
  width: 1.65rem;
  height: 1.65rem;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 0.42rem;
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 900;
}

.quiz-answer.is-selected .quiz-answer__letter {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-contrast);
}

.quiz-answer__text {
  color: var(--text);
  line-height: 1.55;
}

.quiz-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.quiz-controls__finish {
  margin-left: auto;
}

.quiz-complete__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
  margin-top: 1.8rem;
}

.quiz-complete__stats > div {
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
  background: var(--surface);
}

.quiz-complete__stats span,
.quiz-complete__stats strong {
  display: block;
}

.quiz-complete__stats span {
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.quiz-complete__stats strong {
  margin-top: 0.2rem;
  font-size: 1.8rem;
}

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

  .quiz-sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .quiz-navigator__grid {
    grid-template-columns: repeat(10, minmax(2.25rem, 1fr));
  }
}

@media (max-width: 42rem) {
  .quiz-toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .quiz-toolbar__actions {
    width: 100%;
  }

  .quiz-toolbar__actions .button {
    flex: 1 1 12rem;
  }

  .quiz-navigator__grid {
    grid-template-columns: repeat(5, minmax(2.25rem, 1fr));
  }

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

  .quiz-answer__input {
    grid-row: 1 / span 2;
  }

  .quiz-answer__letter {
    grid-column: 2;
  }

  .quiz-answer__text {
    grid-column: 2;
  }

  .quiz-controls .button {
    flex: 1 1 8rem;
  }

  .quiz-controls__finish {
    flex-basis: 100% !important;
    margin-left: 0;
  }

  .quiz-complete__stats {
    grid-template-columns: 1fr;
  }
}

/* Phase 4: grading and detailed review */
.quiz-results {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-large);
  background: var(--surface-soft);
  box-shadow: var(--shadow);
}

.quiz-results__header,
.quiz-results__section,
.quiz-results__actions {
  padding: clamp(1.25rem, 4vw, 2.4rem);
}

.quiz-results__header {
  border-bottom: 1px solid var(--border);
  background: rgb(18 27 39 / 0.82);
}

.quiz-results__header h2 {
  margin-bottom: 0.55rem;
}

.quiz-results__header > p:not(.eyebrow) {
  max-width: 46rem;
  margin: 0.3rem 0 0;
  color: var(--text-muted);
}

.quiz-results__scoring-note {
  font-size: 0.9rem;
}

.quiz-results__overview {
  display: grid;
  grid-template-columns: minmax(12rem, 1.35fr) repeat(4, minmax(8.5rem, 1fr));
  gap: 0.8rem;
  padding: clamp(1.25rem, 4vw, 2.4rem);
  border-bottom: 1px solid var(--border);
}

.quiz-score-card,
.quiz-result-stat {
  display: flex;
  min-height: 8.25rem;
  flex-direction: column;
  justify-content: center;
  padding: 1.15rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-medium);
  background: var(--surface);
}

.quiz-score-card {
  border-color: rgb(112 183 255 / 0.66);
  background: linear-gradient(145deg, rgb(112 183 255 / 0.18), rgb(19 26 36 / 0.96));
}

.quiz-score-card span,
.quiz-result-stat span {
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.quiz-score-card strong {
  margin-top: 0.15rem;
  color: var(--accent-strong);
  font-size: clamp(2.5rem, 6vw, 4rem);
  line-height: 1;
}

.quiz-result-stat strong {
  margin-top: 0.3rem;
  font-size: 2rem;
  line-height: 1.2;
}

.quiz-result-stat--correct strong {
  color: var(--success);
}

.quiz-result-stat--incorrect strong {
  color: #ffaaaa;
}

.quiz-result-stat--unanswered strong {
  color: var(--warning);
}

.quiz-result-stat .quiz-result-stat__time {
  font-size: 1.1rem;
  line-height: 1.4;
}

.quiz-results__section + .quiz-results__section {
  border-top: 1px solid var(--border);
}

.quiz-results__section-heading {
  max-width: 52rem;
  margin-bottom: 1.25rem;
}

.quiz-results__section-heading h2 {
  margin-bottom: 0.35rem;
  font-size: clamp(1.4rem, 3vw, 2rem);
}

.quiz-results__section-heading p {
  margin: 0;
  color: var(--text-muted);
}

.quiz-domain-results {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 0.8rem;
}

.quiz-domain-result {
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
  background: var(--surface);
}

.quiz-domain-result h3 {
  margin: 0 0 0.55rem;
  font-size: 1rem;
  line-height: 1.4;
}

.quiz-domain-result strong {
  display: block;
  color: var(--accent-strong);
  font-size: 1.2rem;
}

.quiz-domain-result p {
  margin: 0.2rem 0 0;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.quiz-review-list {
  display: grid;
  gap: 1.25rem;
}

.quiz-review-card {
  overflow: hidden;
  padding: clamp(1rem, 3vw, 1.6rem);
  border: 1px solid var(--border);
  border-radius: var(--radius-medium);
  background: var(--surface);
}

.quiz-review-card--incorrect {
  border-left: 0.3rem solid #ff9d9d;
}

.quiz-review-card--unanswered {
  border-left: 0.3rem solid var(--warning);
}

.quiz-review-card--correct {
  border-left: 0.3rem solid var(--success);
}

.quiz-review-card__header {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.8rem;
}

.quiz-review-card__identity {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.82rem;
}

.quiz-review-card__identity code {
  color: var(--accent-strong);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.quiz-review-card > h3 {
  max-width: 52rem;
  margin-bottom: 0.8rem;
  font-size: clamp(1.15rem, 2.5vw, 1.45rem);
  line-height: 1.45;
}

.quiz-result-badge,
.quiz-inline-badge {
  display: inline-flex;
  align-items: center;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 850;
  line-height: 1.2;
}

.quiz-result-badge {
  padding: 0.4rem 0.65rem;
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.quiz-result-badge--correct {
  border-color: rgb(127 216 170 / 0.5);
  background: rgb(127 216 170 / 0.11);
  color: var(--success);
}

.quiz-result-badge--incorrect {
  border-color: rgb(255 157 157 / 0.5);
  background: rgb(255 157 157 / 0.11);
  color: #ffb7b7;
}

.quiz-result-badge--unanswered {
  border-color: rgb(255 211 122 / 0.5);
  background: rgb(255 211 122 / 0.1);
  color: var(--warning);
}

.quiz-review-card__instruction {
  margin: 0 0 1rem;
  padding: 0.7rem 0.85rem;
  border-left: 0.22rem solid var(--accent);
  background: rgb(112 183 255 / 0.08);
  color: var(--text-muted);
}

.quiz-review-card__metadata {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: 0.7rem;
  margin: 0 0 1rem;
}

.quiz-review-card__metadata > div {
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 0.45rem;
  background: rgb(11 15 22 / 0.35);
}

.quiz-review-card__metadata dt {
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.quiz-review-card__metadata dd {
  margin: 0.2rem 0 0;
  color: var(--text);
  font-size: 0.88rem;
  line-height: 1.45;
}

.quiz-review-summary {
  margin-bottom: 1rem;
  padding: 0.8rem 0.9rem;
  border-radius: var(--radius-small);
  background: rgb(112 183 255 / 0.07);
}

.quiz-review-summary p {
  margin: 0;
}

.quiz-review-summary p + p {
  margin-top: 0.45rem;
}

.quiz-review-answers {
  display: grid;
  gap: 0.65rem;
}

.quiz-review-answer {
  padding: 0.85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
  background: rgb(11 15 22 / 0.3);
}

.quiz-review-answer.is-correct {
  border-color: rgb(127 216 170 / 0.55);
  background: rgb(127 216 170 / 0.07);
}

.quiz-review-answer.is-selected-wrong {
  border-color: rgb(255 157 157 / 0.58);
  background: rgb(255 157 157 / 0.06);
}

.quiz-review-answer__heading {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.65rem;
  align-items: start;
}

.quiz-review-answer__letter {
  display: grid;
  width: 1.65rem;
  height: 1.65rem;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 0.42rem;
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 900;
}

.quiz-review-answer__heading strong {
  font-size: 0.95rem;
  line-height: 1.5;
}

.quiz-review-answer__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  justify-content: flex-end;
}

.quiz-inline-badge {
  padding: 0.27rem 0.48rem;
  font-size: 0.7rem;
}

.quiz-inline-badge--selected {
  border-color: rgb(112 183 255 / 0.5);
  background: rgb(112 183 255 / 0.11);
  color: var(--accent-strong);
}

.quiz-inline-badge--correct {
  border-color: rgb(127 216 170 / 0.5);
  background: rgb(127 216 170 / 0.11);
  color: var(--success);
}

.quiz-review-answer__explanation {
  margin: 0.65rem 0 0 2.3rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.55;
}

.quiz-correct-explanation {
  margin-top: 1rem;
  padding: 1rem;
  border-left: 0.25rem solid var(--success);
  background: rgb(127 216 170 / 0.07);
}

.quiz-correct-explanation h4 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
}

.quiz-correct-explanation p {
  margin: 0;
  color: var(--text-muted);
}

.quiz-correct-review {
  margin-top: 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-medium);
  background: rgb(11 15 22 / 0.34);
}

.quiz-correct-review > summary {
  cursor: pointer;
  padding: 1rem 1.15rem;
  color: var(--text);
  font-weight: 850;
}

.quiz-correct-review[open] > summary {
  border-bottom: 1px solid var(--border);
}

.quiz-correct-review .quiz-review-list {
  padding: 1rem;
}

.quiz-results__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  border-top: 1px solid var(--border);
  background: rgb(11 15 22 / 0.38);
}

@media (max-width: 68rem) {
  .quiz-results__overview {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .quiz-score-card {
    grid-column: 1 / -1;
  }
}

@media (max-width: 42rem) {
  .quiz-results__overview {
    grid-template-columns: 1fr;
  }

  .quiz-score-card {
    grid-column: auto;
  }

  .quiz-review-answer__heading {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .quiz-review-answer__badges {
    grid-column: 2;
    justify-content: flex-start;
  }

  .quiz-review-answer__explanation {
    margin-left: 0;
  }

  .quiz-results__actions .button {
    flex: 1 1 100%;
  }
}


/* Question reporting */

.button--small {
  min-height: 2.5rem;
  padding: 0.48rem 0.75rem;
  font-size: 0.86rem;
}

.quiz-review-card__actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 1rem;
}

.question-report-dialog {
  width: min(42rem, calc(100% - 2rem));
  max-height: calc(100vh - 2rem);
  padding: 0;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-large);
  background: #121a26;
  color: var(--text);
  box-shadow: 0 1.4rem 4rem rgb(0 0 0 / 0.55);
}

.question-report-dialog::backdrop {
  background: rgb(3 7 13 / 0.78);
  backdrop-filter: blur(0.18rem);
}

.question-report-form {
  padding: clamp(1.2rem, 4vw, 2rem);
}

.question-report-dialog__header {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1.3rem;
}

.question-report-dialog__header h2 {
  margin-bottom: 0.35rem;
}

.question-report-dialog__header p:last-child {
  margin: 0;
  color: var(--text-muted);
}

.question-report-dialog__header code {
  color: var(--accent-strong);
}

.question-report-dialog__close {
  display: grid;
  flex: 0 0 auto;
  width: 2.5rem;
  height: 2.5rem;
  place-items: center;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: 1.4rem;
  cursor: pointer;
}

.question-report-categories {
  display: grid;
  gap: 0.55rem;
  margin: 0;
  padding: 0;
  border: 0;
}

.question-report-categories legend,
.question-report-note > span {
  margin-bottom: 0.65rem;
  font-weight: 850;
}

.question-report-categories label {
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
  padding: 0.72rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
  background: rgb(11 15 22 / 0.35);
  cursor: pointer;
}

.question-report-categories input {
  width: 1.1rem;
  height: 1.1rem;
  margin-top: 0.15rem;
  accent-color: var(--accent);
}

.question-report-note {
  display: grid;
  margin-top: 1.2rem;
}

.question-report-note textarea {
  width: 100%;
  resize: vertical;
  min-height: 7rem;
  padding: 0.8rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
  background: #0d141e;
  color: var(--text);
  font: inherit;
  line-height: 1.5;
}

.question-report-honeypot {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.question-report-turnstile {
  min-height: 4rem;
  margin-top: 1.2rem;
}

.question-report-status {
  min-height: 1.5rem;
  margin: 0.75rem 0 0;
  color: var(--text-muted);
}

.question-report-status[data-status-type="success"] {
  color: var(--success);
}

.question-report-status[data-status-type="error"] {
  color: #ffb7b7;
}

.question-report-dialog__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: flex-end;
  margin-top: 1.25rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--border);
}

@media (max-width: 42rem) {
  .question-report-dialog {
    width: calc(100% - 1rem);
    max-height: calc(100vh - 1rem);
  }

  .question-report-dialog__actions .button {
    flex: 1 1 100%;
  }

  .quiz-review-card__actions .button {
    width: 100%;
  }
}