.cat-btn {
  padding: 0.375rem 1rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 600;
  border: 2px solid transparent;
  background-color: white;
  color: #92400e;
  cursor: pointer;
  transition: all 0.15s ease;
}

.cat-btn:hover {
  background-color: #fef3c7;
  border-color: #f59e0b;
}

.cat-btn.active {
  background-color: #f59e0b;
  color: white;
  border-color: #d97706;
}

#questionCard.loading {
  opacity: 0.5;
  transform: scale(0.98);
}

.history-item {
  padding: 0.75rem 1rem;
  border-radius: 0.75rem;
  margin: 0.25rem 0;
}

.history-item:hover {
  background-color: #fffbeb;
}

.history-item .q-text {
  font-size: 0.875rem;
  color: #1f2937;
  line-height: 1.4;
}

.history-item .q-meta {
  font-size: 0.7rem;
  color: #9ca3af;
  margin-top: 0.25rem;
  display: flex;
  gap: 0.5rem;
}

.q-category-badge {
  display: inline-block;
  padding: 0.1rem 0.5rem;
  border-radius: 9999px;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-hypothetical { background-color: #dbeafe; color: #1e40af; }
.badge-personal     { background-color: #dcfce7; color: #166534; }
.badge-silly        { background-color: #fce7f3; color: #9d174d; }
.badge-deep         { background-color: #ede9fe; color: #4c1d95; }
.badge-all          { background-color: #fef3c7; color: #92400e; }