.music-panel {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px 8px 8px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background:
    linear-gradient(135deg, rgba(123, 97, 255, 0.18), rgba(0, 209, 255, 0.1)),
    rgba(7, 10, 18, 0.78);
  backdrop-filter: blur(14px);
  box-shadow:
    0 16px 48px rgba(0, 0, 0, 0.42),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.music-panel.is-playing {
  border-color: rgba(0, 209, 255, 0.35);
  box-shadow:
    0 18px 54px rgba(0, 0, 0, 0.46),
    0 0 24px rgba(123, 97, 255, 0.18);
}

.music-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 4px 8px 4px 4px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: rgba(255, 255, 255, 0.92);
  font: inherit;
  font-size: 0.84rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 160ms ease;
}

.music-btn:hover {
  transform: translateY(-1px);
}

.music-btn:active {
  transform: translateY(0);
}

.music-btn__icon {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(123, 97, 255, 0.95), rgba(0, 209, 255, 0.92));
  box-shadow: 0 8px 22px rgba(123, 97, 255, 0.28);
  flex-shrink: 0;
}

.music-btn__icon svg {
  display: block;
  width: 14px;
  height: 14px;
  fill: rgba(7, 10, 18, 0.92);
}

.music-btn__meta {
  display: grid;
  gap: 2px;
  min-width: 0;
  text-align: left;
}

.music-btn__song {
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 160px;
}

.music-btn__label {
  padding-right: 2px;
  white-space: nowrap;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.58);
}

.music-panel.is-playing .music-btn__label {
  color: rgba(129, 140, 248, 0.95);
}

.music-btn__bars {
  display: none;
  align-items: flex-end;
  gap: 3px;
  height: 14px;
  margin-left: -2px;
}

.music-btn__bars span {
  display: block;
  width: 3px;
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(123, 97, 255, 0.95), rgba(0, 209, 255, 0.95));
  transform-origin: bottom;
}

.music-panel.is-playing .music-btn__bars {
  display: inline-flex;
}

.music-panel__volume {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 6px 0 2px;
  border-left: 1px solid rgba(255, 255, 255, 0.12);
}

.music-panel__volume svg {
  display: block;
  width: 15px;
  height: 15px;
  fill: rgba(255, 255, 255, 0.72);
  flex-shrink: 0;
}

.music-panel__slider {
  width: 92px;
  height: 4px;
  margin: 0;
  appearance: none;
  border-radius: 999px;
  background: linear-gradient(
    90deg,
    rgba(123, 97, 255, 0.95) 0%,
    rgba(0, 209, 255, 0.95) var(--volume-percent, 70%),
    rgba(255, 255, 255, 0.16) var(--volume-percent, 70%),
    rgba(255, 255, 255, 0.16) 100%
  );
  cursor: pointer;
}

.music-panel__slider::-webkit-slider-thumb {
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.9);
  background: linear-gradient(135deg, rgba(123, 97, 255, 0.95), rgba(0, 209, 255, 0.92));
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.35);
}

.music-panel__slider::-moz-range-track {
  height: 4px;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
}

.music-panel__slider::-moz-range-progress {
  height: 4px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(123, 97, 255, 0.95), rgba(0, 209, 255, 0.95));
}

.music-panel__slider::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.9);
  background: linear-gradient(135deg, rgba(123, 97, 255, 0.95), rgba(0, 209, 255, 0.92));
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.35);
}

@media (max-width: 640px) {
  .music-panel {
    right: 12px;
    bottom: 12px;
    left: 12px;
    justify-content: space-between;
  }

  .music-btn__song {
    max-width: 120px;
  }

  .music-btn__label {
    display: none;
  }

  .music-panel__slider {
    width: min(120px, 34vw);
  }
}

@media (prefers-reduced-motion: no-preference) {
  .music-panel.is-playing .music-btn__bars span:nth-child(1) {
    animation: musicBar 0.9s ease-in-out infinite;
  }

  .music-panel.is-playing .music-btn__bars span:nth-child(2) {
    animation: musicBar 0.9s ease-in-out 0.15s infinite;
  }

  .music-panel.is-playing .music-btn__bars span:nth-child(3) {
    animation: musicBar 0.9s ease-in-out 0.3s infinite;
  }
}

.music-panel.is-playing .music-btn__bars span:nth-child(1) {
  height: 8px;
}

.music-panel.is-playing .music-btn__bars span:nth-child(2) {
  height: 14px;
}

.music-panel.is-playing .music-btn__bars span:nth-child(3) {
  height: 10px;
}

@keyframes musicBar {
  0%,
  100% {
    transform: scaleY(0.45);
  }

  50% {
    transform: scaleY(1);
  }
}