.quiz-panel {
  display: grid;
  gap: 1rem;
}

.quiz-mode-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.quiz-mode-group .button {
  width: 100%;
}

.quiz-stat-note,
.quiz-empty {
  margin: 0;
  color: var(--muted);
}

.quiz-chip-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.quiz-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.72rem 1rem;
  border-radius: 999px;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  transition: border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.quiz-chip:hover,
.quiz-chip:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}

.quiz-actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.quiz-panel .stats-grid {
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .quiz-mode-group,
  .quiz-actions {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .quiz-mode-group .button,
  .quiz-actions .button {
    width: auto;
  }

  .quiz-panel .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .quiz-panel .stats-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}