.quiz-card {
  border: 1px solid #0c6f64;
  border-radius: 10px;
  padding: 1.25rem;
  background: linear-gradient(135deg, #009c8a 0%, #007f71 100%);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  color: #f5fffd;
}

.quiz-list {
  list-style: decimal inside;
  display: grid;
  gap: 1rem;
  padding: 0;
  margin: 0;
}

.quiz-list li {
  background: #ffffff;
  border: 1px solid #e5edf3;
  border-radius: 8px;
  padding: 0.85rem;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.04);
}

.quiz-list p {
  margin: 0 0 0.5rem 0;
  font-weight: 600;
  color: #0b1a2a;
}

.quiz-list label {
  display: block;
  padding: 0.25rem 0;
  cursor: pointer;
  color: #0b1a2a;
}

.quiz-actions {
  margin-top: 1rem;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.quiz-submit,
.quiz-reset {
  border-radius: 6px;
  padding: 0.55rem 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.quiz-submit {
  background: #0e6efd;
  color: #ffffff;
  border: none;
}

.quiz-reset {
  background: #f1f3f5;
  color: #1f2a37;
  border: 1px solid #d4d9e0;
}

.quiz-reset:hover {
  background: #e3e7eb;
  color: #111827;
  border-color: #c4c9d1;
}

.quiz-answer {
  margin-top: 0.35rem;
  padding: 0.4rem 0.6rem;
  border-radius: 6px;
  background: rgba(14, 110, 253, 0.08);
  border: 1px solid rgba(14, 110, 253, 0.25);
}

.quiz-answer.is-correct {
  background: rgba(0, 200, 81, 0.12);
  border-color: rgba(0, 200, 81, 0.35);
}

.quiz-answer.is-wrong {
  background: rgba(255, 89, 89, 0.12);
  border-color: rgba(255, 89, 89, 0.35);
}

.quiz-status {
  margin: 0.75rem 0 0;
  font-weight: 600;
  color: #f5fffd;
}

.quiz-score {
  margin: 0.25rem 0 0;
  font-weight: 700;
  color: #f5fffd;
}

@media (max-width: 640px) {
  .quiz-card {
    padding: 1rem;
  }

  .quiz-list {
    gap: 0.75rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .quiz-card,
  .quiz-answer,
  .quiz-submit,
  .quiz-reset {
    transition: none;
  }
}

.theme-dark .quiz-card,
.dark .quiz-card,
[data-theme="dark"] .quiz-card {
  background: linear-gradient(135deg, #00695c 0%, #005349 100%);
  border-color: #024137;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
  color: #e5fcf6;
}

.theme-dark .quiz-list li,
.dark .quiz-list li,
[data-theme="dark"] .quiz-list li {
  background: #111827;
  border-color: #1f2a3a;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.35);
}

.theme-dark .quiz-list p,
.theme-dark .quiz-list label,
.theme-dark .quiz-status,
.theme-dark .quiz-score,
.dark .quiz-list p,
.dark .quiz-list label,
.dark .quiz-status,
.dark .quiz-score,
[data-theme="dark"] .quiz-list p,
[data-theme="dark"] .quiz-list label,
[data-theme="dark"] .quiz-status,
[data-theme="dark"] .quiz-score {
  color: #e5ecf5;
}

.theme-dark .quiz-submit,
.dark .quiz-submit,
[data-theme="dark"] .quiz-submit {
  background: #2563eb;
  color: #e5ecf5;
}

.theme-dark .quiz-reset,
.dark .quiz-reset,
[data-theme="dark"] .quiz-reset {
  background: #2e3641;
  color: #e5ecf5;
  border: 1px solid #3c4653;
}

.theme-dark .quiz-reset:hover,
.dark .quiz-reset:hover,
[data-theme="dark"] .quiz-reset:hover {
  background: #3a4553;
  color: #ffffff;
  border-color: #4a5566;
}

.theme-dark .quiz-answer,
.dark .quiz-answer,
[data-theme="dark"] .quiz-answer {
  background: rgba(37, 99, 235, 0.18);
  border-color: rgba(37, 99, 235, 0.35);
  color: #dfe9f7;
}

.theme-dark .quiz-answer.is-correct,
.dark .quiz-answer.is-correct,
[data-theme="dark"] .quiz-answer.is-correct {
  background: rgba(16, 185, 129, 0.18);
  border-color: rgba(16, 185, 129, 0.4);
}

.theme-dark .quiz-answer.is-wrong,
.dark .quiz-answer.is-wrong,
[data-theme="dark"] .quiz-answer.is-wrong {
  background: rgba(239, 68, 68, 0.2);
  border-color: rgba(239, 68, 68, 0.45);
}

@media (prefers-color-scheme: dark) {
  .quiz-card {
    background: linear-gradient(135deg, #00695c 0%, #005349 100%);
    border-color: #024137;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
    color: #e5fcf6;
  }

  .quiz-list li {
    background: #111827;
    border-color: #1f2a3a;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.35);
  }

  .quiz-list p,
  .quiz-list label,
  .quiz-status,
  .quiz-score {
    color: #e5ecf5;
  }

  .quiz-submit {
    background: #2563eb;
    color: #e5ecf5;
  }

  .quiz-reset {
    background: #2e3641;
    color: #e5ecf5;
    border: 1px solid #3c4653;
  }

  .quiz-reset:hover {
    background: #3a4553;
    color: #ffffff;
    border-color: #4a5566;
  }

  .quiz-answer {
    background: rgba(37, 99, 235, 0.18);
    border-color: rgba(37, 99, 235, 0.35);
    color: #dfe9f7;
  }

  .quiz-answer.is-correct {
    background: rgba(16, 185, 129, 0.18);
    border-color: rgba(16, 185, 129, 0.4);
  }

  .quiz-answer.is-wrong {
    background: rgba(239, 68, 68, 0.2);
    border-color: rgba(239, 68, 68, 0.45);
  }
}


 .flow-diagram {
    border: 1px solid #ddd;
    border-radius: 12px;
    padding: 16px;
    margin: 16px 0;
    font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    max-width: 780px;
  }

  .flow-diagram .node {
    border: 1px solid #bbb;
    border-radius: 10px;
    padding: 10px 12px;
    text-align: center;
    background: #fff;
    box-shadow: 0 1px 0 rgba(0,0,0,0.04);
  }

  .flow-diagram .start,
  .flow-diagram .end {
    font-weight: 700;
  }

  .flow-diagram .decision {
    border-style: dashed;
  }

  .flow-diagram .decision .title {
    font-size: 12px;
    opacity: 0.8;
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
  }

  .flow-diagram .arrow {
    text-align: center;
    padding: 8px 0;
    font-size: 18px;
    user-select: none;
  }

  .flow-diagram .split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
    margin-top: 10px;
  }

  .flow-diagram .branch {
    border: 1px solid #eee;
    border-radius: 12px;
    padding: 12px;
    background: #fafafa;
  }

  .flow-diagram .label {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    padding: 4px 8px;
    border-radius: 999px;
    margin-bottom: 8px;
  }

  .flow-diagram .label.yes {
    background: #e7f7ee;
    border: 1px solid #bfe8cf;
  }

  .flow-diagram .label.no {
    background: #ffecec;
    border: 1px solid #f3bcbc;
  }

  .flow-diagram code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
    font-size: 0.95em;
  }