/* 大枝 DAZHI ｜ 背景音樂常駐播放器
   播放器位在 .page 之外，局部換頁時不隨文件重建，聲音因此不會斷。 */

.music-dock {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 120;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 15px 8px 8px;
  background: rgba(242, 238, 229, .94);
  border: 1px solid var(--line);
  box-shadow: 0 6px 26px rgba(47, 58, 51, .08);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}

.music-btn {
  -webkit-appearance: none;
  appearance: none;
  width: 38px;
  height: 38px;
  flex: none;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid var(--line-2);
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  transition: border-color .3s var(--ease), background .3s var(--ease);
}
.music-btn:hover { border-color: var(--moss); background: rgba(124, 139, 118, .07); }
.music-btn:focus-visible { outline: 2px solid var(--moss); outline-offset: 4px; }

.music-icon { display: flex; align-items: center; justify-content: center; gap: 2px; height: 14px; }
.music-icon i {
  display: block;
  width: 2px;
  height: 4px;
  background: var(--moss);
  transition: height .3s var(--ease);
}
.music-dock.is-playing .music-icon i { animation: bgm-bar 1.1s ease-in-out infinite alternate; }
.music-dock.is-playing .music-icon i:nth-child(1) { animation-delay: -.7s; }
.music-dock.is-playing .music-icon i:nth-child(2) { animation-delay: -.25s; }
.music-dock.is-playing .music-icon i:nth-child(3) { animation-delay: -.5s; }
@keyframes bgm-bar { from { height: 3px; } to { height: 13px; } }

.music-info { display: flex; flex-direction: column; justify-content: center; gap: 6px; min-width: 84px; }
.music-name {
  font-size: 11px;
  letter-spacing: 2px;
  line-height: 1.2;
  color: var(--ink);
  white-space: nowrap;
}
.music-volume { display: flex; align-items: center; height: 12px; }
.music-volume input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 84px;
  height: 12px;
  margin: 0;
  padding: 0;
  background: transparent;
  cursor: pointer;
}
.music-volume input[type="range"]::-webkit-slider-runnable-track { height: 1px; background: var(--line-2); }
.music-volume input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 7px; height: 7px;
  margin-top: -3px;
  border: 0; border-radius: 50%;
  background: var(--moss);
}
.music-volume input[type="range"]::-moz-range-track { height: 1px; background: var(--line-2); }
.music-volume input[type="range"]::-moz-range-thumb {
  width: 7px; height: 7px;
  border: 0; border-radius: 50%;
  background: var(--moss);
}
.music-volume input[type="range"]:focus-visible { outline: 2px solid var(--moss); outline-offset: 4px; }

/* 瀏覽器攔下自動播放時，給一句極輕的提示；任意點擊即可起播 */
.music-hint { display: none; font-size: 10px; letter-spacing: 1px; line-height: 1.2; color: var(--moss); white-space: nowrap; }
.music-dock.needs-gesture .music-hint { display: block; }
.music-dock.needs-gesture .music-volume { display: none; }

html[data-lang="en"] .music-name { font-family: var(--latin); font-size: 11px; letter-spacing: .6px; }
html[data-lang="en"] .music-hint { font-family: var(--latin); letter-spacing: .2px; }

@media (max-width: 720px) {
  .music-dock { right: 14px; bottom: 14px; gap: 9px; padding: 7px 12px 7px 7px; }
  .music-btn { width: 34px; height: 34px; }
  .music-volume { display: none; }
  .music-info { min-width: 0; }
  .music-name { font-size: 10px; letter-spacing: 1px; }
  .music-dock.needs-gesture .music-hint { font-size: 9px; }
}

@media (prefers-reduced-motion: reduce) {
  .music-dock.is-playing .music-icon i { animation: none; height: 9px; }
  .music-btn { transition: none; }
}