button {
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}
.opt-letter,
.review-opt,
.list-head,
.type-btn,
.tab-btn {
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.tab-btn {
  color: #475569;
}
.tab-btn:hover {
  background: #f1f5f9;
}
.tab-btn.active {
  background: #00705f;
  color: #fff;
}

.type-btn {
  color: #475569;
}
.type-btn.active {
  background: #00705f;
  color: #fff;
}

.opt-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.opt-letter {
  width: 2.25rem;
  height: 2.25rem;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.5rem;
  border: 2px solid #cbd5e1;
  font-weight: 600;
  cursor: pointer;
  user-select: none;
  transition: all 0.15s;
  -webkit-tap-highlight-color: transparent;
}
.opt-letter.selected {
  background: #00705f;
  border-color: #00705f;
  color: #fff;
}
.opt-badge {
  width: 1.5rem;
  height: 1.5rem;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.375rem;
  background: #e2e8f0;
  font-weight: 600;
  font-size: 0.8rem;
}
.review-opt {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  border: 2px solid #e2e8f0;
  border-radius: 0.75rem;
  cursor: pointer;
  transition: all 0.15s;
  -webkit-tap-highlight-color: transparent;
}
.review-opt:hover {
  border-color: #aad9d2;
  background: #e6f2f0;
}
.review-opt.selected {
  border-color: #00705f;
  background: #e6f2f0;
}
.review-opt.correct {
  border-color: #22c55e;
  background: #f0fdf4;
}
.review-opt.wrong {
  border-color: #ef4444;
  background: #fef2f2;
}
.review-opt .badge {
  width: 1.5rem;
  height: 1.5rem;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.375rem;
  background: #e2e8f0;
  font-weight: 600;
  font-size: 0.8rem;
}