.app-quiz {
  --quiz-primary: #0284c7;
  --quiz-primary-soft: #e0f2fe;
  --quiz-border: rgba(2, 132, 199, 0.14);
  --quiz-ink: #0f172a;
  --quiz-muted: #64748b;
  --quiz-option-border: rgba(15, 23, 42, 0.1);
  --quiz-option-border-hover: #bae6fd;
  --quiz-option-border-correct: #34d399;
  --quiz-option-border-wrong: #f87171;

  width: 100%;
  max-width: none;
  margin: 0;
  padding: 0;
}

.app-quiz__header {
  margin-bottom: var(--app-page-hero-gap, 1.5rem);
}

.app-quiz__title {
  margin: 0 0 0.5rem;
  font-weight: 700;
  color: var(--quiz-ink);
}

.app-quiz__intro {
  color: var(--quiz-muted);
  font-size: 0.9375rem;
  line-height: 1.55;
}

.app-quiz__toolbar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.app-quiz__progress-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex: 1 1 12rem;
  min-width: 0;
}

.app-quiz__progress-label {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--quiz-muted);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.app-quiz__progress-track {
  flex: 1;
  min-width: 4.5rem;
  height: 0.4375rem;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.08);
  overflow: hidden;
}

.app-quiz__progress-fill {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #38bdf8, var(--quiz-primary));
  transition: width 0.25s ease;
}

.app-quiz__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.75rem;
  border-radius: 999px;
  background: var(--quiz-primary-soft);
  color: var(--quiz-primary);
  font-size: 0.8125rem;
  font-weight: 600;
}

.app-quiz__panel {
  background: #fff;
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 1rem;
  padding: 1.375rem;
  margin-bottom: 1.25rem;
}

.app-quiz__panel--warn {
  background: #fffbeb;
  border-color: #fde68a;
  color: #92400e;
}

.app-quiz__panel--result {
  background: #ecfdf5;
  border-color: #a7f3d0;
}

.app-quiz__panel--achievement {
  background: #fef9c3;
  border-color: #fde68a;
}

.app-quiz__panel-title {
  margin: 0 0 1rem;
  font-weight: 600;
  font-size: 1rem;
  color: var(--quiz-ink);
}

.app-quiz__panel--levels {
  padding: 1.5rem 1.625rem 1.625rem;
}

.app-quiz__levels-head {
  margin-bottom: 1.125rem;
}

.app-quiz__levels-sub {
  margin: 0.375rem 0 0;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--quiz-muted);
  line-height: 1.45;
}

.app-quiz__level-grid {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.app-quiz__level-form {
  margin: 0;
  min-width: 0;
}

.app-quiz__level-form--wide {
  grid-column: 1 / -1;
}

.app-quiz__level-card {
  --level-accent: var(--quiz-primary);
  --level-soft: var(--quiz-primary-soft);
  --level-ring: rgba(2, 132, 199, 0.18);

  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  width: 100%;
  min-height: 5.5rem;
  padding: 1rem 1.125rem;
  border-radius: 1rem;
  border: 1px solid var(--level-ring);
  background: linear-gradient(160deg, var(--level-soft) 0%, #fff 72%);
  color: var(--quiz-ink);
  font-family: inherit;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.15s, transform 0.12s, box-shadow 0.15s;
  box-shadow: 0 10px 24px rgba(2, 132, 199, 0.06);
}

.app-quiz__level-card:hover {
  border-color: var(--level-accent);
  box-shadow: 0 14px 28px rgba(2, 132, 199, 0.12);
  transform: translateY(-1px);
}

.app-quiz__level-card:active {
  transform: translateY(0);
}

.app-quiz__level-card--a1,
.app-quiz__level-card--a2 {
  --level-accent: #0284c7;
  --level-soft: #ecfdf5;
  --level-ring: rgba(2, 132, 199, 0.2);
}

.app-quiz__level-card--b1,
.app-quiz__level-card--b2 {
  --level-accent: #b45309;
  --level-soft: #fffbeb;
  --level-ring: rgba(180, 83, 9, 0.18);
}

.app-quiz__level-card--c1,
.app-quiz__level-card--c2 {
  --level-accent: #0284c7;
  --level-soft: #f0f9ff;
  --level-ring: rgba(109, 40, 217, 0.18);
}

.app-quiz__level-card--all {
  --level-accent: #0284c7;
  --level-soft: #e0f2fe;
  --level-ring: rgba(2, 132, 199, 0.22);
  min-height: 4.5rem;
  background: linear-gradient(135deg, #ecfdf5 0%, #e0f2fe 48%, #fff 100%);
}

.app-quiz__level-code {
  display: block;
  font-size: 1.375rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--level-accent);
}

.app-quiz__level-card--all .app-quiz__level-code {
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.35;
}

.app-quiz__level-go {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--quiz-muted);
}

.app-quiz__level-card:hover .app-quiz__level-go {
  color: var(--level-accent);
}

.app-quiz__card {
  background: #fff;
  border: 1px solid var(--quiz-border);
  border-radius: 1.125rem;
  padding: 1.5rem 1.625rem 1.625rem;
  margin-bottom: 1.25rem;
  box-shadow: 0 12px 32px rgba(2, 132, 199, 0.1);
}

.app-quiz__prompt-label {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  margin: 0;
  font-size: 0.8125rem;
  font-weight: 700;

  text-transform: uppercase;
  color: var(--quiz-muted);
}

.app-quiz__prompt {
  margin: 0.5rem 0 1.25rem;
  font-size: clamp(1.75rem, 6vw, 2.5rem);
  font-weight: 800;

  color: var(--quiz-ink);
  word-break: break-word;
}

.app-quiz__feedback {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  padding: 0.875rem 1rem;
  border-radius: 0.75rem;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.45;
}

.app-quiz__feedback--correct {
  background: #ecfdf5;
  border: 1px solid #6ee7b7;
  color: #047857;
}

.app-quiz__feedback--wrong {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #b91c1c;
}

.app-quiz__option-list {
  list-style: none;
  margin: 0 0 1.25rem;
  padding: 0;
  display: grid;
  gap: 0.625rem;
}

.app-quiz__option-item {
  margin: 0;
  border-radius: 0.875rem;
  border: 1px solid var(--quiz-option-border);
  background: #f8fafc;
  box-sizing: border-box;
  overflow: hidden;
  transition: border-color 0.15s, background 0.15s;
}

.app-quiz__option-item.is-pending {
  border-color: var(--quiz-option-border);
  background: #f8fafc;
}

.app-quiz__option-item.is-pending:hover,
.app-quiz__option-item.is-pending:focus-within {
  border-color: var(--quiz-option-border);
  background: #f1f5f9;
}

.app-quiz__option-form {
  margin: 0;
  width: 100%;
}

.app-quiz__option-btn {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  width: 100%;
  padding: 1rem 1.125rem;
  border: none;
  border-radius: 0;
  background: transparent !important;
  font-family: inherit;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--quiz-ink);
  cursor: pointer;
  text-align: left;
  transition: background 0.15s, transform 0.12s;
  outline: none;
  box-shadow: none !important;
}

.app-quiz__option-item.is-pending:focus-within {
  border-color: rgba(148, 163, 184, 0.55);
  background: #f1f5f9;
}

.app-quiz__option-btn:focus-visible {
  outline: none;
}

.app-quiz__option-btn:active {
  transform: scale(0.99);
}

.app-quiz__option-item.is-correct {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 1rem 1.125rem;
  border-color: var(--quiz-option-border-correct);
  background: #ecfdf5;
  color: #047857;
}

.app-quiz__option-item.is-wrong {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 1rem 1.125rem;
  border-color: var(--quiz-option-border-wrong);
  background: #fef2f2;
  color: #b91c1c;
}

.app-quiz__option-item.is-idle {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 1rem 1.125rem;
  border-color: var(--quiz-option-border);
  background: #f8fafc;
  color: #94a3b8;
  opacity: 0.85;
}

.app-quiz__option-key {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.625rem;
  background: #e2e8f0;
  font-size: 1rem;
  font-weight: 800;
  color: #334155;
  flex-shrink: 0;
}

.app-quiz__option-item.is-correct .app-quiz__option-key {
  background: #a7f3d0;
  color: #047857;
}

.app-quiz__option-item.is-wrong .app-quiz__option-key {
  background: #fecaca;
  color: #b91c1c;
}

.app-quiz__option-text {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
  font-size: 1.0625rem;
  font-weight: 600;
  word-break: break-word;
}

.app-quiz__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4375rem;
  border-radius: 0.75rem;
  padding: 0.6875rem 1.125rem;
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.app-quiz__btn .fi,
.app-quiz__level-go .fi,
.app-quiz__level-card .fi {
  font-size: 1rem;
  line-height: 1;
}

.app-quiz__btn--primary {
  background: var(--quiz-primary);
  color: #fff;
}

.app-quiz__btn--primary:hover {
  background: #0369a1;
}

.app-quiz__btn--secondary {
  background: #fff;
  color: var(--quiz-primary);
  border: 1px solid rgba(2, 132, 199, 0.22);
}

.app-quiz__btn--secondary:hover {
  background: var(--quiz-primary-soft);
}

.app-quiz__btn--ghost {
  background: transparent;
  color: var(--quiz-muted);
  padding: 0.375rem 0.75rem;
}

.app-quiz__btn--large {
  width: 100%;
  padding: 0.875rem 1.25rem;
  font-size: 1rem;
}

.app-quiz__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
}

.app-quiz__history {
  margin-top: 2rem;
}

.app-quiz__history-title {
  margin: 0 0 0.875rem;
  font-size: 1.125rem;
  font-weight: 700;
}

.app-quiz__history-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
}

.app-quiz__history-item {
  padding: 1rem 1.125rem;
  border-radius: 1rem;
  border: 1px solid rgba(15, 23, 42, 0.08);
  background: #fff;
  box-shadow: 0 8px 20px rgba(2, 132, 199, 0.06);
}

.app-quiz__history-item.is-perfect {
  border-color: #a7f3d0;
  background: linear-gradient(180deg, #e0f2fe 0%, #fff 100%);
}

.app-quiz__history-item.is-mid {
  border-color: #fde68a;
  background: linear-gradient(180deg, #fffbeb 0%, #fff 100%);
}

.app-quiz__history-item.is-low {
  border-color: #fecaca;
  background: linear-gradient(180deg, #fef2f2 0%, #fff 100%);
}

.app-quiz__history-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.app-quiz__history-level {
  display: inline-flex;
  align-items: center;
  gap: 0.3125rem;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--quiz-primary);
}

.app-quiz__history-score {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--quiz-ink);
  font-variant-numeric: tabular-nums;
}

.app-quiz__history-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem 0.75rem;
  margin-bottom: 0.625rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--quiz-muted);
}

.app-quiz__history-meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.3125rem;
}

.app-quiz__history-track {
  height: 0.4375rem;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.08);
  overflow: hidden;
}

.app-quiz__history-fill {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #38bdf8, var(--quiz-primary));
}

.app-quiz__history-item.is-perfect .app-quiz__history-fill {
  background: linear-gradient(90deg, #34d399, #0284c7);
}

.app-quiz__history-item.is-mid .app-quiz__history-fill {
  background: linear-gradient(90deg, #facc15, #eab308);
}

.app-quiz__history-item.is-low .app-quiz__history-fill {
  background: linear-gradient(90deg, #f87171, #dc2626);
}

.app-quiz__history-empty {
  margin-top: 1.25rem;
  color: #94a3b8;
  font-size: 0.9375rem;
}

.app-quiz__dialog {
  border: none;
  padding: 0;
  background: transparent;
  max-width: none;
  max-height: none;
}

.app-quiz__dialog::backdrop {
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(2px);
}

.app-quiz__dialog-panel {
  width: min(92vw, 24rem);
  margin: 12vh auto;
  padding: 1.375rem 1.5rem 1.5rem;
  border-radius: 1.125rem;
  background: #fff;
  border: 1px solid rgba(15, 23, 42, 0.08);
  box-shadow: 0 24px 48px rgba(2, 132, 199, 0.16);
}

.app-quiz__dialog-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.75rem;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--quiz-ink);
}

.app-quiz__dialog-text {
  margin: 0 0 1.25rem;
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--quiz-muted);
}

.app-quiz__dialog-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.625rem;
}

.app-quiz__dialog-actions .app-quiz__btn {
  width: 100%;
  min-height: 2.75rem;
}

@media (max-width: 560px) {
  .app-quiz__card,
  .app-quiz__panel {
    padding: 1.125rem;
  }

  .app-quiz__level-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .app-quiz__level-card {
    min-height: 5rem;
    padding: 0.875rem 1rem;
  }

  .app-quiz__level-code {
    font-size: 1.25rem;
  }

  .app-quiz__option-btn,
  .app-quiz__option-item.is-pending .app-quiz__option-btn,
  .app-quiz__option-item.is-correct,
  .app-quiz__option-item.is-wrong,
  .app-quiz__option-item.is-idle {
    padding: 0.875rem 1rem;
  }

  .app-quiz__toolbar {
    align-items: stretch;
  }

  .app-quiz__actions {
    flex-direction: column;
  }

  .app-quiz__actions .app-quiz__btn {
    width: 100%;
  }
}