/* ===== 音乐播放器 - 左下角极简版 ===== */
.lg-music-player {
  position: fixed;
  left: 20px;
  bottom: 20px;
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Noto Serif SC', -apple-system, BlinkMacSystemFont, sans-serif;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(18px) saturate(180%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50px;
  padding: 5px 16px 5px 5px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.28);
}

/* 主按钮 - 圆形黑胶唱片风格 */
.lg-music-btn {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #3a3a4a 0%, #1f1f2e 50%, #0f0f17 100%);
  border: 2px solid rgba(255, 255, 255, 0.35);
  box-shadow: 0 3px 14px rgba(0, 0, 0, 0.45),
              inset 0 1px 3px rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease;
}

.lg-music-btn::after {
  content: '';
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  border: 1px dashed rgba(255, 255, 255, 0.12);
}

.lg-music-btn:hover {
  transform: scale(1.07);
}

.lg-music-btn.lg-music-playing {
  animation: lg-music-spin 6s linear infinite;
}

.lg-music-btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 9px;
  height: 9px;
  background: rgba(255, 255, 255, 0.92);
  border-radius: 50%;
  z-index: 3;
  box-shadow: 0 0 3px rgba(0, 0, 0, 0.4);
}

.lg-music-btn svg {
  width: 20px;
  height: 20px;
  color: #fff;
  position: relative;
  z-index: 2;
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.5));
}

/* 歌曲标题 */
.lg-music-title {
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.85rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 160px;
  letter-spacing: 0.3px;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.45);
}

/* 播放中标题动画（呼吸亮度） */
.lg-music-player.lg-music-playing-ui .lg-music-title {
  animation: lg-music-title-pulse 2s ease-in-out infinite;
}

/* 动画 */
@keyframes lg-music-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes lg-music-title-pulse {
  0%, 100% { opacity: 0.9; }
  50% { opacity: 1; text-shadow: 0 1px 8px rgba(255, 255, 255, 0.3); }
}

/* 移动端适配 */
@media (max-width: 640px) {
  .lg-music-player {
    left: 12px;
    bottom: 12px;
    padding: 4px 12px 4px 4px;
  }

  .lg-music-btn {
    width: 40px;
    height: 40px;
  }

  .lg-music-btn svg {
    width: 17px;
    height: 17px;
  }

  .lg-music-title {
    font-size: 0.75rem;
    max-width: 100px;
  }
}