:root {
  --quiz-accent: #111111;
  --quiz-muted: #757575;
  --quiz-option-bg: #f5f5f5;
  --quiz-option-hover: #ececec;
  --quiz-option-border: #e0e0e0;
  --quiz-option-selected: #111111;
}

main {
  max-width: 560px;
}

.quiz-progress {
  color: var(--quiz-muted);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.quiz-question {
  font-size: clamp(1.25rem, 4vw, 1.75rem);
  font-weight: 600;
  line-height: 1.45;
  margin-bottom: 2rem;
  color: var(--quiz-accent);
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.quiz-option {
  padding: 1.1rem 1.25rem;
  font-size: 1rem;
  text-align: left;
  background: var(--quiz-option-bg);
  border: 1.5px solid var(--quiz-option-border);
  border-radius: 12px;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.08s ease;
  font-family: inherit;
  color: var(--quiz-accent);
  line-height: 1.5;
}

.quiz-option:hover {
  background: var(--quiz-option-hover);
}

.quiz-option:active {
  transform: scale(0.985);
}

.quiz-option--selected {
  background: var(--quiz-option-selected);
  color: #ffffff;
  border-color: var(--quiz-option-selected);
}

.quiz-back {
  background: transparent;
  border: none;
  color: var(--quiz-muted);
  font-size: 0.95rem;
  cursor: pointer;
  padding: 0.5rem 0;
  font-family: inherit;
}

.quiz-back:hover {
  color: var(--quiz-accent);
}