.music-player-menu {
  position: relative;
  justify-self: end;
}

.music-player-menu .music-sound-toggle {
  white-space: nowrap;
}

.music-track-menu {
  position: absolute;
  top: calc(100% + 14px);
  right: 0;
  width: max-content;
  min-width: 220px;
  padding: 7px;
  overflow: hidden;
  border: 1px solid rgba(200, 169, 106, 0.3);
  background: rgba(7, 17, 42, 0.96);
  box-shadow: 0 22px 64px rgba(0, 0, 0, 0.38);
  backdrop-filter: blur(18px);
  transform: translateY(-5px);
  transform-origin: top right;
  opacity: 0;
  visibility: hidden;
  transition: opacity 180ms ease, transform 180ms ease, visibility 180ms;
}

.music-player-menu.is-open .music-track-menu {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.music-track-title {
  position: relative;
  display: block;
  width: 100%;
  padding: 13px 36px 13px 14px;
  border: 0;
  background: transparent;
  color: rgba(244, 237, 218, 0.76);
  font-family: var(--font-noto-serif-jp), serif;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-align: left;
  cursor: pointer;
  transition: color 180ms ease, background-color 180ms ease;
}

.music-track-title:hover,
.music-track-title:focus-visible,
.music-track-title.is-selected {
  color: var(--music-gold);
  background: rgba(200, 169, 106, 0.08);
  outline: none;
}

.music-track-title.is-selected::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 15px;
  width: 10px;
  height: 1px;
  background: currentColor;
  opacity: 0.72;
}

.music-track-title.is-playing::after {
  height: 10px;
  background: linear-gradient(
    90deg,
    currentColor 0 2px,
    transparent 2px 4px,
    currentColor 4px 6px,
    transparent 6px 8px,
    currentColor 8px 10px
  );
  animation: music-track-pulse 760ms ease-in-out infinite alternate;
}

@keyframes music-track-pulse {
  from { transform: translateY(-50%) scaleY(0.42); }
  to { transform: translateY(-50%) scaleY(1); }
}

@media (max-width: 640px) {
  .music-track-menu {
    top: calc(100% + 10px);
    min-width: min(240px, calc(100vw - 40px));
  }

  .music-track-title {
    padding-block: 12px;
    font-size: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .music-track-menu,
  .music-track-title {
    transition: none;
  }

  .music-track-title.is-playing::after {
    animation: none;
  }
}