:root {
  color-scheme: light;
  --bg: #f3ebd9;
  --bg-2: #faf3e2;
  --bg-3: #e9dec3;
  --ink: #1c1813;
  --ink-2: #4a4338;
  --ink-3: #847a64;
  --rule: #c9be9f;
  --rule-soft: #ddd1b3;
  --accent: #8a2317;
  --accent-2: #6b1c12;
  --gold: #a87714;
  --sage: #5d7440;
  --sage-soft: rgba(93, 116, 64, 0.12);
  --wrong: #11100e;
  --wrong-line: #403b31;
  --wrong-text: #9d9687;
  --serif-display: "Fraunces", Georgia, serif;
  --serif-body: "Newsreader", Georgia, serif;
  --mono: "JetBrains Mono", "SF Mono", Menlo, monospace;
  --max: 1120px;
}

[data-theme="dim"] {
  color-scheme: dark;
  --bg: #181410;
  --bg-2: #211c15;
  --bg-3: #141009;
  --ink: #e6dec8;
  --ink-2: #b8ad94;
  --ink-3: #7d735a;
  --rule: #3a3328;
  --rule-soft: #2a2418;
  --accent: #d8a070;
  --accent-2: #b88050;
  --gold: #d4a83a;
  --sage: #9ab068;
  --sage-soft: rgba(154, 176, 104, 0.14);
  --wrong: #080806;
  --wrong-line: #4b4538;
  --wrong-text: #9c9584;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 0%, rgba(138, 35, 23, 0.08), transparent 28rem),
    radial-gradient(circle at 94% 72%, rgba(168, 119, 20, 0.08), transparent 30rem),
    var(--bg);
  font-family: var(--serif-body);
  font-size: 17px;
  line-height: 1.62;
  font-feature-settings: "kern", "liga", "onum";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background 0.35s ease, color 0.35s ease;
}

body::before {
  position: fixed;
  z-index: 9999;
  inset: 0;
  pointer-events: none;
  content: "";
  opacity: 0.2;
  background-image: radial-gradient(rgba(28, 24, 19, 0.24) 0.45px, transparent 0.55px);
  background-size: 7px 7px;
  mix-blend-mode: multiply;
}

[data-theme="dim"] body::before {
  opacity: 0.08;
  mix-blend-mode: screen;
}

body.modal-open {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  border: 0;
  color: inherit;
  font: inherit;
  cursor: pointer;
  background: none;
}

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

[hidden] {
  display: none !important;
}

::selection {
  color: var(--bg);
  background: var(--accent);
}

.wrap {
  width: min(var(--max), calc(100% - 72px));
  margin: 0 auto;
}

/* Compact masthead */

.masthead {
  position: sticky;
  z-index: 100;
  top: 0;
  border-bottom: 1px solid var(--rule);
  background: var(--bg);
  background: color-mix(in srgb, var(--bg) 94%, transparent);
  backdrop-filter: blur(12px);
}

.masthead-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 0 14px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 8px;
  white-space: nowrap;
}

.brand-mark,
.brand-name {
  font-family: var(--serif-display);
}

.brand-mark {
  color: var(--accent);
  font-size: 27px;
  font-weight: 800;
  letter-spacing: -0.06em;
  line-height: 1;
}

.brand-code {
  color: var(--gold);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
}

.brand-divider {
  color: var(--ink-3);
  margin: 0 3px;
}

.brand-name {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.015em;
}

.masthead-actions {
  display: flex;
  align-items: center;
  gap: 18px;
}

.score-block {
  display: flex;
  align-items: baseline;
  gap: 9px;
}

.meta-label,
.section-kicker,
.question-counter,
.progress-label,
.case-label,
.question-category,
.answers-hint,
.modal-eyebrow,
.modal-label {
  font-family: var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.meta-label {
  color: var(--ink-3);
  font-size: 9px;
}

.score-block strong {
  color: var(--accent);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
}

.theme-toggle,
.reset-button {
  padding: 5px 0;
  border-bottom: 1px solid var(--rule);
  color: var(--ink-2);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: color 0.2s, border-color 0.2s;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.theme-toggle:hover,
.theme-toggle:focus-visible,
.reset-button:hover,
.reset-button:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
  outline: none;
}

/* Question surface */

.question-page {
  padding: 48px 0 74px;
}

.quiz-frame {
  padding-bottom: 27px;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  background: var(--bg-2);
}

.quiz-frame-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
  padding: 21px 0 17px;
  border-bottom: 1px solid var(--rule);
}

.section-kicker {
  margin: 0 0 5px;
  color: var(--accent);
  font-size: 10px;
}

.question-counter {
  margin: 0;
  color: var(--ink-3);
  font-size: 10px;
  letter-spacing: 0.05em;
}

.question-counter span {
  color: var(--ink-3);
}

.progress-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.progress-label {
  color: var(--ink-3);
  font-size: 10px;
  white-space: nowrap;
}

.progress-track {
  width: min(250px, 28vw);
  height: 4px;
  overflow: hidden;
  background: var(--bg-3);
}

.progress-bar {
  width: 10%;
  height: 100%;
  background: var(--accent);
  transition: width 0.35s ease;
}

.question-content {
  padding: 55px 0 43px;
  border-bottom: 1px solid var(--rule);
}

.question-meta {
  display: flex;
  align-items: baseline;
  gap: 13px;
  margin-bottom: 13px;
}

.case-label,
.question-category {
  margin: 0;
  font-size: 10px;
}

.case-label {
  color: var(--accent);
}

.question-category {
  color: var(--ink-3);
}

.question-content h1 {
  max-width: 900px;
  margin: 0 0 16px;
  color: var(--ink);
  font-family: var(--serif-display);
  font-size: clamp(36px, 5.3vw, 66px);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.01;
  outline: none;
  font-variation-settings: "opsz" 96;
}

.question-context {
  max-width: 760px;
  margin: 0 0 24px;
  color: var(--ink-2);
  font-size: 19px;
  line-height: 1.5;
}

.question-prompt {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--gold);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.prompt-line {
  width: 28px;
  height: 1px;
  background: var(--gold);
}

.answers-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  padding: 24px 0 13px;
}

.answers-head .case-label {
  color: var(--ink-3);
}

.answers-hint {
  color: var(--ink-3);
  font-size: 9px;
  letter-spacing: 0.04em;
}

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

.answer-button {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  min-height: 94px;
  padding: 16px 17px;
  border: 1px solid var(--rule);
  color: var(--ink);
  text-align: left;
  background: var(--bg);
  transition: color 0.18s, border-color 0.18s, background 0.18s, transform 0.18s;
}

.answer-button:hover:not(:disabled),
.answer-button:focus-visible:not(:disabled) {
  border-color: var(--accent);
  outline: none;
  background: var(--bg-3);
  transform: translateY(-2px);
}

.answer-button:disabled {
  cursor: default;
}

.answer-index {
  display: grid;
  flex: 0 0 28px;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 1px solid var(--ink-3);
  color: var(--accent);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
}

.answer-text {
  padding-top: 2px;
  color: var(--ink-2);
  font-size: 16px;
  line-height: 1.45;
}

.answer-button.is-wrong {
  border-color: var(--wrong-line);
  color: var(--wrong-text);
  background: var(--wrong);
}

.answer-button.is-wrong .answer-index {
  border-color: var(--wrong-line);
  color: var(--wrong-text);
}

.answer-button.is-wrong .answer-text {
  color: var(--wrong-text);
  text-decoration: line-through;
  text-decoration-color: rgba(255, 255, 255, 0.38);
}

.answer-button.is-correct {
  border-color: var(--sage);
  background: var(--sage-soft);
}

.answer-button.is-correct .answer-index {
  border-color: var(--sage);
  color: var(--sage);
}

.answer-button.is-correct .answer-text {
  color: var(--sage);
  font-weight: 600;
}

.feedback {
  display: flex;
  gap: 13px;
  padding: 15px 0 0;
  margin-top: 18px;
  border-top: 1px solid var(--accent);
}

.feedback-icon {
  display: grid;
  flex: 0 0 25px;
  place-items: center;
  width: 25px;
  height: 25px;
  color: var(--bg);
  background: var(--accent);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
}

.feedback-title {
  margin: 0 0 2px;
  color: var(--ink);
  font-family: var(--serif-display);
  font-size: 18px;
  font-weight: 600;
}

.feedback-message {
  margin: 0;
  color: var(--ink-2);
  font-size: 14px;
  line-height: 1.45;
}

/* Correct-answer modal */

.answer-modal {
  position: fixed;
  z-index: 300;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
}

.answer-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(28, 24, 19, 0.72);
  backdrop-filter: blur(4px);
}

.modal-dialog {
  position: relative;
  z-index: 1;
  width: min(100%, 650px);
  max-height: calc(100vh - 48px);
  overflow-y: auto;
  padding: 38px 42px 34px;
  border: 1px solid var(--ink);
  color: var(--ink);
  background: var(--bg-2);
  box-shadow: 12px 12px 0 rgba(28, 24, 19, 0.24);
  animation: modal-in 0.2s ease-out both;
}

@keyframes modal-in {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin-bottom: 20px;
  border: 1px solid var(--sage);
  color: var(--sage);
  font-family: var(--mono);
  font-size: 22px;
}

.modal-eyebrow {
  margin: 0 0 9px;
  color: var(--sage);
  font-size: 10px;
}

.modal-dialog h2 {
  margin: 0 0 10px;
  color: var(--ink);
  font-family: var(--serif-display);
  font-size: clamp(34px, 5vw, 53px);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1;
}

.modal-message,
.modal-explanation p {
  margin: 0;
  color: var(--ink-2);
  font-size: 17px;
  line-height: 1.5;
}

.modal-explanation {
  padding: 16px 0 19px;
  margin: 20px 0 22px;
  border-top: 1px dotted var(--rule);
  border-bottom: 1px dotted var(--rule);
}

.modal-label {
  margin: 0 0 7px !important;
  color: var(--sage) !important;
  font-size: 9px !important;
}

.modal-reference {
  margin-top: 10px !important;
  color: var(--ink-3) !important;
  font-size: 12px !important;
  font-style: italic;
}

.next-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-width: 205px;
  padding: 12px 17px;
  color: var(--bg);
  background: var(--ink);
  font-size: 13px;
  font-weight: 500;
  transition: color 0.2s, background 0.2s, transform 0.2s;
}

.next-button:hover:not(:disabled),
.next-button:focus-visible:not(:disabled) {
  color: var(--bg);
  background: var(--accent);
  outline: none;
  transform: translateY(-2px);
}

.next-button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

.modal-continue {
  width: 100%;
}

.modal-hint {
  margin: 12px 0 0;
  color: var(--ink-3);
  font-family: var(--mono);
  font-size: 9px;
  text-align: center;
}

/* Result */

.result-section {
  padding-bottom: 74px;
}

.result-panel {
  max-width: 820px;
  padding: 64px 0 72px;
  margin: 0 auto;
  text-align: center;
  border-bottom: 1px solid var(--rule);
}

.result-icon {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  margin: 0 auto 21px;
  border: 1px solid var(--sage);
  color: var(--sage);
  font-family: var(--mono);
  font-size: 24px;
}

.section-eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.result-panel h2 {
  margin: 0 0 15px;
  color: var(--ink);
  font-family: var(--serif-display);
  font-size: clamp(34px, 5vw, 58px);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.02;
}

.result-copy {
  max-width: 560px;
  margin: 0 auto 28px;
  color: var(--ink-2);
  font-size: 18px;
  line-height: 1.52;
}

.result-stats {
  display: flex;
  justify-content: center;
  max-width: 520px;
  margin: 0 auto 30px;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.result-stat {
  flex: 1;
  padding: 17px 15px;
}

.result-stat + .result-stat {
  border-left: 1px solid var(--rule);
}

.result-stat span {
  display: block;
  margin-bottom: 4px;
  color: var(--ink-3);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.result-stat strong {
  color: var(--accent);
  font-family: var(--serif-display);
  font-size: 29px;
  font-weight: 500;
}

@media (max-width: 720px) {
  .wrap {
    width: min(100% - 40px, 620px);
  }

  .masthead-row {
    align-items: flex-start;
  }

  .masthead-actions {
    align-items: flex-end;
    flex-direction: column;
    gap: 7px;
  }

  .question-page {
    padding-top: 32px;
  }

  .quiz-frame-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
  }

  .progress-wrap {
    width: 100%;
    justify-content: space-between;
  }

  .progress-track {
    width: 58%;
  }

  .question-content {
    padding: 40px 0 32px;
  }

  .question-content h1 {
    font-size: clamp(36px, 10vw, 52px);
  }

  .question-context {
    font-size: 17px;
  }

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

  .modal-dialog {
    padding: 30px 24px 26px;
  }
}

@media (max-width: 480px) {
  .wrap {
    width: min(100% - 28px, 620px);
  }

  .brand-name,
  .brand-divider {
    display: none;
  }

  .score-block {
    gap: 6px;
  }

  .score-block .meta-label {
    display: none;
  }

  .question-meta {
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
  }

  .answers-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
  }

  .answer-button {
    min-height: 0;
    padding: 14px;
  }

  .answer-text {
    font-size: 15px;
  }

  .result-stats {
    display: block;
  }

  .result-stat + .result-stat {
    border-top: 1px solid var(--rule);
    border-left: 0;
  }
}

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