.collection {
  padding: 60px 0px;
  display: flex;
  justify-content: center;
  align-items: center;
}
.collection .music-player {
  width: calc(100% / 3 - 10px); /* 固定寬度，配合 Swiper slidesPerView */
  aspect-ratio: 320 / 495;
  background: var(--linear-60);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px); /* Safari */
  overflow: hidden;
  padding: 1.25rem;
  border-radius: 8px;
  min-width: 320px;
}
@media screen and (max-width: 768px) {
  .collection .music-player {
    width: 85%;
    min-width: 240px;
  }
}

.collection .music-player::before {
  content: "";
  position: absolute;
  inset: 0;
  padding: 2px;
  background: var(--linear);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: destination-out;
  mask-composite: exclude;
  border-radius: 8px;
  z-index: 2;
  pointer-events: none;
}

.music-player img {
  width: 100%;
  object-fit: contain;
  border-radius: 4px;
}
.music-player,
.card-body {
  display: flex;
  flex-direction: column;
  justify-content: space-between; /* 均分空間 */
  flex-grow: 1; /* 撐滿剩餘空間 */
  gap: 1rem;
}

.progress-bar {
  accent-color: var(--white);
  width: 100%;
  height: 4px;
  border-radius: 8px;
  background-color: var(--white);
}
.pause-icon {
  display: none;
}
.play-btn,
.play-btn svg {
  color: white;
  transition: color 0.3s;
}

.play-btn:hover {
  color: #9747ff;
}