:root {
  --materials-navy: #082654;
  --materials-blue: #2459a6;
  --materials-teal: #0b746d;
  --materials-gold: #d7a32f;
  --materials-coral: #c94b45;
  --materials-green: #177245;
  --materials-red: #a62929;
  --materials-ink: #172333;
  --materials-muted: #566579;
  --materials-line: #d6e0e9;
  --materials-soft: #f3f7fa;
  --materials-paper: #ffffff;
  --materials-shadow: 0 14px 32px rgba(8, 38, 84, 0.09);
}

* {
  box-sizing: border-box;
}

body.english-intermediate-page {
  background: var(--materials-soft);
  color: var(--materials-ink);
}

body.english-intermediate-page .site-header {
  position: static;
}

body.english-intermediate-page .global-course-switcher {
  position: relative;
  top: auto;
  right: auto;
  bottom: auto;
  display: flex;
  width: min(1160px, calc(100% - 24px));
  justify-content: flex-end;
  margin: 0.6rem auto 0;
}

body.english-intermediate-page .jaralingua-auth > .auth-trigger {
  display: none !important;
}

.materials-page {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
  padding: 2rem 0 4rem;
}

.materials-intro {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  gap: clamp(1.4rem, 4vw, 3rem);
  align-items: center;
  padding: clamp(1.1rem, 3vw, 2.2rem) 0 2rem;
  border-bottom: 1px solid var(--materials-line);
}

.materials-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 0.85rem;
  color: var(--materials-teal);
  font-size: 0.82rem;
  font-weight: 900;
  text-transform: uppercase;
}

.materials-eyebrow::before {
  width: 28px;
  height: 3px;
  background: var(--materials-gold);
  content: "";
}

.materials-intro h1 {
  max-width: 680px;
  margin: 0;
  color: var(--materials-navy);
  font-size: clamp(2rem, 5vw, 3.75rem);
  line-height: 1.03;
}

.materials-intro h1 span {
  color: var(--materials-teal);
}

.materials-lead {
  max-width: 670px;
  margin: 1rem 0 0;
  color: var(--materials-muted);
  font-size: 1.05rem;
  line-height: 1.72;
}

.materials-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.materials-actions .btn {
  min-height: 46px;
  border-radius: 6px;
}

.materials-figure {
  margin: 0;
}

.materials-figure img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--materials-line);
  border-radius: 8px;
  object-fit: cover;
  box-shadow: var(--materials-shadow);
}

.materials-figure figcaption {
  margin-top: 0.65rem;
  color: var(--materials-muted);
  font-size: 0.88rem;
  line-height: 1.5;
}

.materials-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 1.3rem 0 0;
  overflow: hidden;
  border: 1px solid var(--materials-line);
  border-radius: 8px;
  background: var(--materials-line);
}

.materials-metric {
  min-width: 0;
  padding: 0.8rem;
  background: var(--materials-paper);
}

.materials-metric strong,
.materials-metric span {
  display: block;
}

.materials-metric strong {
  color: var(--materials-navy);
  font-size: 1.25rem;
}

.materials-metric span {
  margin-top: 0.18rem;
  color: var(--materials-muted);
  font-size: 0.83rem;
  font-weight: 800;
}

.materials-assessment {
  padding-top: 2rem;
}

.assessment-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.assessment-heading h2,
.materials-result h2 {
  margin: 0;
  color: var(--materials-navy);
  font-size: clamp(1.6rem, 3vw, 2.25rem);
}

.assessment-heading p {
  max-width: 720px;
  margin: 0.45rem 0 0;
  color: var(--materials-muted);
  line-height: 1.62;
}

.answer-counter {
  flex: 0 0 auto;
  min-width: 132px;
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--materials-line);
  border-radius: 6px;
  background: var(--materials-paper);
  color: var(--materials-navy);
  font-weight: 900;
  text-align: center;
}

.progress-track {
  height: 8px;
  margin-bottom: 1.25rem;
  overflow: hidden;
  border-radius: 4px;
  background: #dce5ec;
}

.progress-fill {
  width: 0;
  height: 100%;
  background: var(--materials-teal);
  transition: width 180ms ease;
}

.question-list {
  display: grid;
  gap: 0.9rem;
}

.materials-question {
  min-width: 0;
  margin: 0;
  padding: 1rem;
  border: 1px solid var(--materials-line);
  border-radius: 8px;
  background: var(--materials-paper);
  box-shadow: 0 8px 20px rgba(8, 38, 84, 0.05);
}

.materials-question.is-correct {
  border-color: #65ae83;
}

.materials-question.is-incorrect {
  border-color: #d67a75;
}

.question-header {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 0.85rem;
  align-items: start;
}

.question-number {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 6px;
  background: var(--materials-navy);
  color: #ffffff;
  font-weight: 900;
}

.question-context {
  display: block;
  margin-bottom: 0.28rem;
  color: var(--materials-teal);
  font-size: 0.75rem;
  font-weight: 900;
  text-transform: uppercase;
}

.question-prompt {
  margin: 0;
  color: var(--materials-ink);
  font-size: 1.03rem;
  font-weight: 850;
  line-height: 1.55;
}

.question-blank {
  display: inline-block;
  min-width: 106px;
  border-bottom: 3px solid var(--materials-gold);
  color: var(--materials-blue);
  text-align: center;
}

.option-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
  margin-top: 0.9rem;
}

.option-choice {
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--materials-line);
  border-radius: 6px;
  background: #ffffff;
  color: var(--materials-ink);
  cursor: pointer;
  font-weight: 900;
  text-align: center;
  transition: border-color 150ms ease, background 150ms ease, color 150ms ease, transform 150ms ease;
}

.option-choice:hover {
  border-color: var(--materials-teal);
  transform: translateY(-1px);
}

.option-choice:focus-within {
  outline: 3px solid rgba(36, 89, 166, 0.25);
  outline-offset: 2px;
}

.option-choice input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
}

.option-choice.is-selected {
  border-color: var(--materials-blue);
  background: #edf4ff;
  color: var(--materials-navy);
}

.option-choice.is-correct-choice {
  border-color: #4e9a70;
  background: #eaf7ef;
  color: #0b5b34;
}

.option-choice.is-wrong-choice {
  border-color: #ce6661;
  background: #fff0ef;
  color: #88211f;
}

.is-graded .option-choice {
  cursor: default;
  transform: none;
}

.question-feedback {
  display: none;
  margin: 0.85rem 0 0;
  padding: 0.75rem 0.85rem;
  border-left: 4px solid var(--materials-line);
  background: #f7f9fb;
  color: var(--materials-muted);
  line-height: 1.58;
}

.question-feedback.is-visible {
  display: block;
}

.materials-question.is-correct .question-feedback {
  border-left-color: var(--materials-green);
  background: #edf8f1;
  color: #195b38;
}

.materials-question.is-incorrect .question-feedback {
  border-left-color: var(--materials-red);
  background: #fff2f1;
  color: #7f2926;
}

.assessment-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1.15rem;
  padding: 1rem;
  border: 1px solid var(--materials-line);
  border-radius: 8px;
  background: var(--materials-paper);
}

.assessment-actions .btn {
  min-height: 46px;
  border-radius: 6px;
}

.assessment-actions [hidden] {
  display: none !important;
}

.assessment-message {
  flex: 1 1 260px;
  margin: 0;
  color: var(--materials-muted);
  font-weight: 800;
  line-height: 1.45;
}

.assessment-message[data-state="error"] {
  color: var(--materials-red);
}

.assessment-message[data-state="success"] {
  color: var(--materials-green);
}

.materials-result {
  margin-top: 1.2rem;
  padding: clamp(1rem, 3vw, 1.8rem);
  border: 1px solid var(--materials-line);
  border-top: 5px solid var(--materials-gold);
  border-radius: 8px;
  background: var(--materials-paper);
  box-shadow: var(--materials-shadow);
}

.materials-result[hidden] {
  display: none;
}

.result-layout {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 1.25rem;
  align-items: center;
}

.score-display {
  padding: 1rem;
  border-radius: 8px;
  background: var(--materials-navy);
  color: #ffffff;
  text-align: center;
}

.score-display strong,
.score-display span {
  display: block;
}

.score-display strong {
  font-size: 2.8rem;
  line-height: 1;
}

.score-display span {
  margin-top: 0.35rem;
  font-weight: 800;
}

.result-copy p {
  margin: 0.55rem 0 0;
  color: var(--materials-muted);
  line-height: 1.6;
}

.breakdown-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
  margin-top: 1rem;
}

.breakdown-item {
  padding: 0.75rem;
  border: 1px solid var(--materials-line);
  border-radius: 6px;
  background: #f8fafc;
}

.breakdown-item strong,
.breakdown-item span {
  display: block;
}

.breakdown-item strong {
  color: var(--materials-navy);
}

.breakdown-item span {
  margin-top: 0.2rem;
  color: var(--materials-muted);
  font-size: 0.86rem;
  font-weight: 800;
}

@media (max-width: 900px) {
  .materials-intro {
    grid-template-columns: 1fr;
  }

  .materials-figure {
    order: -1;
  }

  .materials-figure img {
    max-height: 430px;
  }
}

@media (max-width: 700px) {
  .site-header .navbar {
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.65rem;
  }

  .site-header .brand {
    display: flex;
    width: 100%;
    justify-content: center;
  }

  .site-header .nav-links {
    display: grid;
    width: 100%;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.45rem;
    margin: 0;
    padding: 0;
  }

  .site-header .nav-links a {
    display: flex;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    padding: 0.55rem 0.4rem;
    white-space: normal;
    text-align: center;
  }

  .materials-page {
    width: min(100% - 22px, 1160px);
    padding-top: 1.2rem;
  }

  .assessment-heading,
  .result-layout {
    display: grid;
    grid-template-columns: 1fr;
    align-items: start;
  }

  .answer-counter {
    width: 100%;
  }

  .option-grid,
  .breakdown-grid {
    grid-template-columns: 1fr;
  }

  .materials-actions .btn,
  .assessment-actions .btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .materials-metrics {
    grid-template-columns: 1fr;
  }

  .question-header {
    grid-template-columns: 38px minmax(0, 1fr);
  }

  .question-number {
    width: 38px;
    height: 38px;
  }
}

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