#filter-panel {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 40px;
}

.theme-btn {
  padding: 4px 10px;
  border-radius: 20px;
  border: none;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  color: white;
  opacity: 0.4;
  transition: opacity 0.2s, transform 0.1s;
}

.theme-btn.active {
  opacity: 1;
  transform: scale(1.05);
}

.theme-btn:hover {
  opacity: 0.85;
}

#btn-all {
  background: #666;
  color: white;
  padding: 4px 12px;
  border-radius: 20px;
  border: none;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
}