.play-button {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, #0EA5E9, #A855F7);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  box-shadow: 0 5px 15px rgba(0,0,0,0.2);
  transition: transform 0.3s ease;
  position: relative;
  font-size: 28px;
  color: white;
}
.play-button:hover {
  transform: scale(1.05);
}
.play-button .icon-play {
  display: flex;
  align-items: center;
  justify-content: center;
}
.play-button.playing .icon-play {
  display: none;
}
.bars {
  display: none;
  gap: 4px;
}
.play-button.playing .bars {
  display: flex;
}
.bars span {
  display: block;
  width: 6px;
  height: 20px;
  background: white;
  border-radius: 3px;
  animation: none;
}
.play-button.playing .bars span:nth-child(1) { animation: bounce 1s infinite ease-in-out; }
.play-button.playing .bars span:nth-child(2) { animation: bounce 1s 0.1s infinite ease-in-out; }
.play-button.playing .bars span:nth-child(3) { animation: bounce 1s 0.2s infinite ease-in-out; }
.play-button.playing .bars span:nth-child(4) { animation: bounce 1s 0.3s infinite ease-in-out; }
.play-button.playing .bars span:nth-child(5) { animation: bounce 1s 0.4s infinite ease-in-out; }
@keyframes bounce {
  0%, 100% { height: 10px; }
  50% { height: 30px; }
}