.music-player-popup {
  position: fixed;
  top: 50%;
  right: 30px;
  transform: translateY(-50%);
  width: 260px;
  background: rgba(24, 28, 36, 0.28);
  color: #fff;
  border-radius: 32px;
  box-shadow: 0 4px 24px 0 rgba(0,0,0,0.22), 0 0 24px 2px #00ffe7, 0 0 32px 4px #3a8bfd;
  z-index: 9999;
  padding: 14px 16px 10px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-family: 'Montserrat', Arial, sans-serif;
  transition: width 0.3s, padding 0.3s, background 0.3s;
  backdrop-filter: blur(18px) saturate(180%);
  border: 2px solid;
  border-image: linear-gradient(120deg, #00ffe7 0%, #3a8bfd 60%, #ffe259 100%) 1;
  outline: 1.5px solid rgba(0,255,231,0.10);
}
.music-player-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1em;
  font-weight: bold;
  margin-bottom: 6px;
  text-shadow: 0 2px 8px #00ffe7;
}
.music-player-close {
  background: none;
  border: none;
  color: #fff;
  font-size: 1.5em;
  cursor: pointer;
  transition: color 0.2s;
}
.music-player-close:hover {
  color: #3a8bfd;
}
.music-player-controls {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin: 8px 0;
}
.music-player-controls button {
  background: rgba(24, 28, 36, 0.35);
  border: none;
  border-radius: 50%;
  color: #fff;
  font-size: 1.2em;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
  box-shadow: 0 0 12px 2px #00ffe7, 0 0 8px 2px #3a8bfd, 0 2px 8px rgba(0,0,0,0.10);
  display: flex;
  align-items: center;
  justify-content: center;
}
.music-player-controls #music-play {
  width: 38px;
  height: 38px;
  font-size: 1.2em;
  margin: 0 4px;
  box-shadow: 0 0 24px 6px #00ffe7, 0 0 16px 4px #ffe259;
}
.music-player-controls #music-prev,
.music-player-controls #music-next {
  width: 24px;
  height: 24px;
  font-size: 0.9em;
  box-shadow: 0 0 8px 2px #3a8bfd, 0 0 4px 1px #ffe259;
}
.music-player-controls #music-prev {
  margin-right: 0;
}
.music-player-controls #music-next {
  margin-left: 0;
}
.music-player-controls button:hover {
  background: rgba(0,255,231,0.12);
  color: #00ffe7;
  box-shadow: 0 0 24px 8px #00ffe7, 0 0 12px 4px #ffe259, 0 2px 8px rgba(0,0,0,0.15);
}
.music-player-progress {
  width: 100%;
  margin: 0 0 8px 0;
}
.music-player-progress input[type="range"] {
  width: 100%;
  accent-color: #00ffe7;
  height: 4px;
  background: linear-gradient(90deg, #00ffe7 0%, #3a8bfd 80%, #ffe259 100%);
  border-radius: 2px;
  box-shadow: 0 0 8px #00ffe7, 0 0 4px #ffe259;
}
.music-player-info {
  text-align: center;
  font-size: 0.95em;
  color: #b3b3b3;
  text-shadow: 0 0 8px #00ffe7, 0 0 12px #ffe259;
}
.music-player-expand-btn {
  position: absolute;
  left: -24px;
  top: 50%;
  transform: translateY(-50%) rotate(0deg);
  background: rgba(24, 28, 36, 0.35);
  border: none;
  border-radius: 50%;
  width: 38px;
  height: 38px;
  color: #00ffe7;
  font-size: 1.5em;
  cursor: pointer;
  box-shadow: 0 0 12px 2px #00ffe7, 0 0 8px 2px #ffe259, 0 2px 8px rgba(0,0,0,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s, transform 0.3s;
  backdrop-filter: blur(8px) saturate(180%);
  outline: 1.5px solid rgba(0,255,231,0.10);
}
.music-player-expand-btn svg {
  width: 20px;
  height: 20px;
  display: block;
  transition: transform 0.3s;
  filter: drop-shadow(0 0 8px #00ffe7) drop-shadow(0 0 4px #ffe259);
}
.music-player-expand-btn:hover {
  background: rgba(0,255,231,0.12);
  color: #fff;
  box-shadow: 0 0 24px 8px #00ffe7, 0 0 12px 4px #ffe259, 0 2px 8px rgba(0,0,0,0.15);
}
.music-player-popup.collapsed {
  width: 44px;
  min-width: 44px;
  max-width: 44px;
  padding: 0;
  justify-content: center;
  align-items: center;
  background: rgba(24, 28, 36, 0.35);
  border-radius: 24px;
}
.music-player-popup.collapsed > *:not(.music-player-expand-btn) {
  display: none !important;
}
.music-player-popup.collapsed .music-player-expand-btn {
  left: 6px;
  top: 50%;
  transform: translateY(-50%) rotate(180deg);
}
@media (max-width: 480px) {
  .music-player-popup {
    width: 90vw;
    right: 2vw;
    padding: 8px 4px 6px 4px;
  }
  .music-player-header {
    font-size: 0.95em;
  }
  .music-player-controls button {
    width: 36px;
    height: 36px;
    font-size: 1em;
  }
  .music-player-popup.collapsed {
    width: 36px;
    min-width: 36px;
    max-width: 36px;
  }
  .music-player-controls #music-play {
    width: 30px;
    height: 30px;
    font-size: 1em;
  }
  .music-player-controls #music-prev,
  .music-player-controls #music-next {
    width: 18px;
    height: 18px;
    font-size: 0.8em;
  }
}