.quiz-hero {
  padding: 80px 40px 50px;
}

.quiz-hero__content {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 50px;
  flex-wrap: wrap;
}

.quiz-hero__tag {
  font-family: var(--font-heading);
  font-size: 13px;
  letter-spacing: 4px;
  color: var(--color-primary);
  margin-bottom: 12px;
  text-align: center;
}

.quiz-hero__title {
  font-family: var(--font-display);
  font-size: 60px;
  letter-spacing: 4px;
  text-align: center;
}

.quiz-hero__subtitle {
  color: var(--color-muted);
  text-align: center;
  max-width: 520px;
  line-height: 1.6;
  margin: 0 auto;
}

.quiz-hero__actions {
  margin-top: 24px;
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.quiz-leaderboard-filters {
  display: grid;
  gap: 16px;
  margin: 24px 0 30px;
  padding: 16px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.filter-group {
  display: grid;
  gap: 10px;
}

.filter-label {
  font-family: var(--font-heading);
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-muted);
}

.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.filter-chip {
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--color-muted);
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
  transition: border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.filter-chip:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.4);
  transform: translateY(-1px);
}

.filter-chip.is-active {
  color: #fff;
  border-color: rgba(212, 0, 0, 0.6);
  box-shadow: 0 0 0 1px rgba(212, 0, 0, 0.3);
}

.filter-search {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.filter-search input[type='search'] {
  flex: 1;
  min-width: 220px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: #fff;
  font-family: var(--font-heading);
  font-size: 13px;
}

.filter-search input[type='search']::placeholder {
  color: var(--color-dim);
}

.filter-search input[type='search']:focus {
  outline: var(--focus-outline);
  outline-offset: var(--focus-offset);
  border-color: rgba(255, 255, 255, 0.4);
}

.quiz-ring {
  width: 220px;
  height: 220px;
}

.quiz-ring__spin {
  transform: rotate(-90deg);
  transform-origin: center;
  animation: spin 8s linear infinite;
}

@keyframes spin {
  from {
    transform: rotate(-90deg);
  }
  to {
    transform: rotate(270deg);
  }
}

.quiz-categories {
  padding: 0 40px 60px;
}

.section-title {
  font-family: var(--font-display);
  font-size: 24px;
  text-align: center;
  margin-bottom: 30px;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.category-card {
  background: linear-gradient(135deg, rgba(30, 30, 30, 0.9) 0%, rgba(20, 20, 20, 0.95) 100%);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.05);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.category-card:hover {
  transform: translateY(-4px);
  border-color: rgba(212, 0, 0, 0.3);
}

.category-card:focus-visible {
  outline: var(--focus-outline);
  outline-offset: var(--focus-offset);
}

.category-card__icon {
  font-family: var(--font-display);
  color: var(--color-primary);
}

.category-card__count {
  font-size: 13px;
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: 1px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(212, 0, 0, 0.2);
  border: 1px solid rgba(212, 0, 0, 0.45);
}

.quiz-featured {
  padding: 60px 40px;
  background: linear-gradient(180deg, transparent 0%, rgba(212, 0, 0, 0.03) 50%, transparent 100%);
}

.quiz-category {
  padding: 80px 40px;
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  gap: 24px;
}

.quiz-category__header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.quiz-category__tag {
  font-family: var(--font-heading);
  font-size: 13px;
  letter-spacing: 3px;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.quiz-category__title {
  font-family: var(--font-display);
  font-size: 44px;
  margin-bottom: 10px;
}

.quiz-category__subtitle {
  color: var(--color-muted);
  max-width: 620px;
  line-height: 1.6;
}

.quiz-category__grid {
  margin-top: 10px;
}

.quiz-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.quiz-pagination__meta {
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-muted);
}

.btn.is-disabled {
  opacity: 0.4;
  pointer-events: none;
}

.featured-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.featured-card {
  background: linear-gradient(135deg, rgba(40, 40, 40, 0.9) 0%, rgba(25, 25, 25, 0.95) 100%);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(212, 0, 0, 0.2);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform 0.2s ease, border-color 0.2s ease;
  min-width: 0;
}

.featured-card:hover {
  transform: translateY(-4px);
  border-color: rgba(212, 0, 0, 0.5);
}

.featured-card:focus-visible {
  outline: var(--focus-outline);
  outline-offset: var(--focus-offset);
}

.featured-badge {
  font-family: var(--font-heading);
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--color-primary);
}

.featured-badges {
  display: flex;
  align-items: center;
  gap: 12px;
}

.badge-new {
  font-family: var(--font-heading);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #0b0b0b;
  background: linear-gradient(135deg, #f0c400, #ff9f1a);
  padding: 4px 8px;
  border-radius: 999px;
}

.featured-stats {
  display: flex;
  gap: 16px;
  font-size: 13px;
  color: var(--color-muted);
  flex-wrap: wrap;
  row-gap: 6px;
}

.featured-card__link {
  margin-top: 6px;
  font-family: var(--font-heading);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 12px;
  color: #fff;
}

.quiz-page {
  max-width: 900px;
  margin: 0 auto;
  padding: 60px 40px;
  display: grid;
  gap: 24px;
}

.quiz-card {
  background: linear-gradient(135deg, rgba(30, 30, 30, 0.95) 0%, rgba(20, 20, 20, 0.98) 100%);
  border-radius: var(--radius-md);
  padding: 40px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  box-shadow: var(--shadow-lg);
}

.quiz-context {
  font-family: var(--font-heading);
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 16px;
}

.quiz-card__badge {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-heading);
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.quiz-card__title {
  font-family: var(--font-display);
  font-size: 32px;
  margin-bottom: 12px;
}

.quiz-card__subtitle {
  color: var(--color-muted);
  margin-bottom: 24px;
}

.quiz-card__stats {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-bottom: 20px;
  text-align: center;
}

.quiz-card__stats span:first-child {
  font-family: var(--font-display);
  font-size: 18px;
  display: block;
}

.quiz-card__meta {
  display: flex;
  justify-content: center;
  gap: 20px;
  font-size: 13px;
  color: var(--color-dim);
  margin-bottom: 24px;
}

.quiz-card__actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.quiz-progress {
  margin-bottom: 24px;
}

.progress-bar {
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 12px;
}

.progress-fill {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--color-primary), #ff4d6d);
  transition: width 0.3s ease;
}

.progress-meta {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--color-muted);
}

.quiz-timer {
  font-family: var(--font-display);
  color: #fff;
  letter-spacing: 0.12em;
}

.quiz-timer-bar {
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  overflow: hidden;
  margin-top: 10px;
}

.quiz-timer-fill {
  display: block;
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, #ffb347 0%, var(--color-primary) 100%);
  transition: width 0.1s linear;
}

.quiz-question h2 {
  font-size: 22px;
  margin-bottom: 20px;
}

.quiz-options {
  display: grid;
  gap: 12px;
  margin-bottom: 18px;
}

.option-btn {
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: linear-gradient(135deg, rgba(40, 40, 40, 0.95) 0%, rgba(18, 18, 18, 0.98) 100%);
  color: #f0f0f0;
  padding: 18px 22px;
  border-radius: var(--radius-sm);
  display: flex;
  gap: 12px;
  text-align: left;
  cursor: pointer;
  font-size: 16px;
  line-height: 1.4;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.35);
  transition: transform 0.15s ease, border-color 0.15s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.option-letter {
  width: 36px;
  height: 36px;
  background: rgba(212, 0, 0, 0.18);
  border: 1px solid rgba(212, 0, 0, 0.35);
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 13px;
  color: #fff;
}

.option-btn:hover {
  border-color: rgba(212, 0, 0, 0.6);
  box-shadow: 0 16px 30px rgba(0, 0, 0, 0.45);
  transform: translateY(-1px);
}

.option-btn:focus-visible {
  outline: 2px solid rgba(212, 0, 0, 0.7);
  outline-offset: 2px;
}

.option-btn.is-correct {
  border-color: #27ae60;
  color: #eafaf0;
  background: linear-gradient(135deg, rgba(39, 174, 96, 0.35) 0%, rgba(20, 80, 50, 0.7) 100%);
}

.option-btn.is-wrong {
  border-color: #e74c3c;
  color: #ffecec;
  background: linear-gradient(135deg, rgba(231, 76, 60, 0.35) 0%, rgba(90, 20, 20, 0.7) 100%);
}

.option-btn.is-disabled {
  opacity: 0.5;
}

.option-btn.is-selected {
  border-color: rgba(255, 255, 255, 0.4);
}

.quiz-feedback {
  margin-top: 14px;
  font-size: 14px;
  color: var(--color-dim);
  min-height: 20px;
  text-align: center;
}

.quiz-fact {
  margin-top: 20px;
  margin-bottom: 18px;
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  background: rgba(241, 196, 15, 0.08);
  border: 1px solid rgba(241, 196, 15, 0.2);
}

[data-quiz-next] {
  margin-top: 8px;
}

.fact-label {
  font-family: var(--font-heading);
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #f1c40f;
  display: block;
  margin-bottom: 8px;
}

.quiz-result {
  text-align: center;
}

.quiz-result__grade {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  border: 3px solid var(--color-primary);
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 40px;
}

.quiz-result__score {
  font-family: var(--font-display);
  font-size: 32px;
  margin: 20px 0;
}

.quiz-result__meta {
  display: flex;
  justify-content: center;
  gap: 16px;
  font-size: 13px;
  color: var(--color-muted);
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.quiz-result__meta--points {
  margin-top: -8px;
}

.quiz-result__share {
  text-align: center;
  margin: 14px 0 6px;
}

.btn--share {
  background: linear-gradient(135deg, var(--color-primary) 0%, #ff3859 100%);
  color: #fff;
}

.btn--share:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(212, 0, 0, 0.35);
}

.btn--share .btn__icon {
  font-size: 14px;
}

.quiz-result__actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  row-gap: 12px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.quiz-result__status {
  margin-top: 14px;
  font-size: 13px;
  color: var(--color-dim);
  text-align: center;
}

.quiz-result__status:empty {
  display: none;
}

.leaderboard-title {
  text-align: center;
  font-family: var(--font-display);
  margin-bottom: 8px;
}

.leaderboard-subtitle {
  text-align: center;
  color: var(--color-muted);
  margin-bottom: 20px;
}

.leaderboard-header {
  text-align: center;
  margin-bottom: 20px;
}

.leaderboard-tag {
  font-family: var(--font-heading);
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.leaderboard-actions {
  margin-top: 12px;
  display: flex;
  justify-content: center;
}

.leaderboard-placeholder {
  border: 1px dashed rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-sm);
  padding: 30px;
  text-align: center;
  color: var(--color-muted);
  margin-bottom: 20px;
  grid-column: 1 / -1;
}

.quiz-result__note {
  font-size: 13px;
  color: var(--color-muted);
}

.quiz-review {
  margin-top: 28px;
  text-align: left;
}

.quiz-review h3 {
  font-family: var(--font-display);
  font-size: 18px;
  margin-bottom: 16px;
}

.quiz-review__list {
  display: grid;
  gap: 16px;
}

.quiz-review__item {
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  background: rgba(15, 15, 15, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.quiz-review__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.quiz-review__index {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.quiz-review__status {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.quiz-review__status.is-correct {
  background: rgba(46, 204, 113, 0.18);
  color: #2ecc71;
}

.quiz-review__status.is-wrong {
  background: rgba(231, 76, 60, 0.18);
  color: #e74c3c;
}

.quiz-review__status.is-timeout {
  background: rgba(241, 196, 15, 0.18);
  color: #f1c40f;
}

.quiz-review__question {
  margin-bottom: 8px;
  font-size: 15px;
}

.quiz-review__answer,
.quiz-review__fact {
  font-size: 13px;
  color: var(--color-muted);
}

.quiz-review__fact {
  margin-top: 8px;
  color: #f1c40f;
}

.leaderboard-table {
  display: grid;
  gap: 12px;
  margin-bottom: 20px;
}

.leaderboard-row {
  display: grid;
  grid-template-columns: 70px minmax(0, 1fr) minmax(140px, 1fr) 90px 90px 80px;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: var(--radius-sm);
  font-size: 14px;
}

.leaderboard-row--header {
  background: transparent;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 12px;
  color: var(--color-muted);
}

.leaderboard-row.is-highlighted {
  border: 1px solid rgba(212, 0, 0, 0.5);
  box-shadow: 0 0 0 1px rgba(212, 0, 0, 0.2);
}

.leaderboard-rank {
  font-family: var(--font-display);
}

.leaderboard-name {
  color: #fff;
  min-width: 0;
}

.leaderboard-score,
.leaderboard-count {
  text-align: right;
  font-family: var(--font-display);
}

.leaderboard-team {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-muted);
  min-width: 0;
}

.leaderboard-user-rank {
  margin-bottom: 16px;
  text-align: center;
  font-family: var(--font-heading);
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-muted);
}

.challenge-banner {
  background: linear-gradient(90deg, rgba(212, 0, 0, 0.18), rgba(255, 107, 107, 0.08));
  border: 1px solid rgba(212, 0, 0, 0.3);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  text-align: center;
  font-family: var(--font-heading);
  font-size: 13px;
  letter-spacing: 1px;
}

.share-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.share-modal.is-hidden {
  display: none;
}

.share-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
}

.share-modal__content {
  position: relative;
  background: linear-gradient(135deg, rgba(30, 30, 30, 0.96), rgba(18, 18, 18, 0.98));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 30px;
  max-width: 520px;
  width: 100%;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
  z-index: 1;
}

.share-modal__close {
  position: absolute;
  top: 14px;
  right: 16px;
  background: transparent;
  border: none;
  color: var(--color-muted);
  font-size: 26px;
  cursor: pointer;
}

.share-modal__close:hover {
  color: var(--color-text);
}

.share-modal__message {
  width: 100%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  color: #fff;
  font-family: inherit;
  font-size: 14px;
  line-height: 1.5;
  resize: vertical;
  margin: 16px 0 18px;
  min-height: 110px;
}

.share-modal__message:focus {
  outline: var(--focus-outline);
  outline-offset: var(--focus-offset);
}

.share-modal__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.share-modal__platforms {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
}

.share-platform {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 16px;
  min-height: var(--min-touch-target);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-sm);
  color: #fff;
  font-family: var(--font-heading);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.share-platform:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.4);
}

.share-modal__status {
  margin-top: 12px;
  font-size: 12px;
  text-align: center;
  color: var(--color-muted);
  min-height: 16px;
}

@media (max-width: 900px) {
  .quiz-hero {
    padding: 60px 24px 40px;
  }

  .quiz-hero__title {
    font-size: 42px;
  }

  .quiz-hero__subtitle {
    font-size: 15px;
  }

  .quiz-ring {
    width: 180px;
    height: 180px;
  }

  .quiz-categories,
  .quiz-featured {
    padding: 50px 24px;
  }

  .quiz-category {
    padding: 60px 24px;
  }

  .quiz-card {
    padding: 28px;
  }
}

@media (max-width: 720px) {
  .quiz-page {
    padding: 40px 20px;
  }

  .category-grid,
  .featured-grid {
    grid-template-columns: 1fr;
  }

  .quiz-leaderboard-filters {
    padding: 14px;
  }

  .filter-search input[type='search'] {
    min-width: 100%;
  }

  .quiz-card__stats {
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
    gap: 12px;
  }

  .quiz-card__meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .progress-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    font-size: 14px;
  }

  .quiz-question h2 {
    font-size: 21px;
  }

  .option-btn {
    padding: 16px 18px;
    font-size: 16px;
  }

  .quiz-result__meta {
    flex-direction: column;
  }

  .share-modal__content {
    padding: 24px 20px;
  }

  .share-modal__actions {
    flex-direction: column;
  }

  .share-modal__actions .btn {
    width: 100%;
  }

  .leaderboard-row--header {
    display: none;
  }

  .leaderboard-row {
    grid-template-columns: 50px 1fr auto;
    grid-template-rows: auto auto auto;
    gap: 6px 12px;
    padding: 16px 14px;
  }

  .leaderboard-rank {
    grid-row: 1 / 4;
    font-size: 18px;
    align-self: center;
  }

  .leaderboard-name {
    grid-column: 2;
    grid-row: 1;
    font-size: 15px;
    font-weight: 600;
  }

  .leaderboard-row span:nth-child(4) {
    grid-column: 3;
    grid-row: 1;
    font-size: 16px;
    font-weight: 700;
  }

  .leaderboard-row span:nth-child(3) {
    grid-column: 2;
    grid-row: 2;
  }

  .leaderboard-row span:nth-child(5) {
    grid-column: 3;
    grid-row: 2;
    font-size: 13px;
  }

  .leaderboard-row span:nth-child(6) {
    grid-column: 2 / 4;
    grid-row: 3;
    font-size: 12px;
    color: var(--color-muted);
  }

  .leaderboard-row span:nth-child(4)::after {
    content: "pts";
    font-size: 11px;
    margin-left: 2px;
    color: var(--color-dim);
    font-weight: 400;
  }
}