/* =========================================================================
   music.css —— 音乐播放器（鬼灭美学风格）
   ========================================================================= */

/* 悬浮触发按钮（右上角） */
.music-fab {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 150;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(45, 27, 78, 0.95), rgba(74, 44, 94, 0.9));
  border: 1px solid rgba(255, 215, 0, 0.5);
  box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 20px;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s;
  -webkit-tap-highlight-color: transparent;
}
.music-fab:active {
  transform: scale(0.9);
}
.music-fab.is-playing {
  animation: music-fab-rotate 4s linear infinite;
  box-shadow: 0 4px 24px rgba(127, 219, 230, 0.5);
}
@keyframes music-fab-rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* 播放器面板 */
.music-panel {
  position: fixed;
  top: 72px;
  right: 20px;
  z-index: 149;
  width: 300px;
  max-width: calc(100vw - 40px);
  max-height: 70vh;
  background: linear-gradient(160deg, rgba(26, 15, 46, 0.98), rgba(45, 27, 78, 0.95));
  border: 1px solid rgba(255, 215, 0, 0.4);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5), 0 0 30px rgba(255, 215, 0, 0.15);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  opacity: 0;
  transform: translateY(-12px) scale(0.95);
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.music-panel.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

/* 面板头部 */
.music-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px 10px;
  border-bottom: 1px solid rgba(255, 215, 0, 0.15);
}
.music-panel__title {
  font-family: var(--font-title);
  font-size: 14px;
  letter-spacing: 0.15em;
  color: var(--color-gold);
  display: flex;
  align-items: center;
  gap: 6px;
}
.music-panel__close {
  font-size: 20px;
  color: var(--color-text-muted);
  cursor: pointer;
  line-height: 1;
  transition: color 0.2s;
  background: none;
  border: none;
  padding: 0;
}
.music-panel__close:hover {
  color: var(--color-text);
}

/* 当前播放信息 */
.music-current {
  padding: 12px 16px;
  text-align: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.music-current__disc {
  width: 64px;
  height: 64px;
  margin: 0 auto 8px;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%,
    rgba(255, 215, 0, 0.2) 0%,
    rgba(255, 215, 0, 0.1) 30%,
    rgba(45, 27, 78, 0.8) 60%,
    rgba(26, 15, 46, 1) 100%);
  border: 2px solid rgba(255, 215, 0, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  position: relative;
  box-shadow: 0 0 20px rgba(255, 215, 0, 0.2);
}
.music-current__disc::after {
  content: "";
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-gold);
  box-shadow: 0 0 8px rgba(255, 215, 0, 0.8);
}
.music-current__disc.is-spinning {
  animation: disc-spin 4s linear infinite;
}
@keyframes disc-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
.music-current__name {
  font-family: var(--font-title);
  font-size: 13px;
  color: var(--color-text-gold);
  letter-spacing: 0.05em;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.music-current__status {
  font-size: 11px;
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
}

/* 进度条 */
.music-progress {
  padding: 8px 16px 4px;
}
.music-progress__bar {
  position: relative;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  cursor: pointer;
  overflow: hidden;
}
.music-progress__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-gold), var(--color-amber-light));
  border-radius: var(--radius-full);
  width: 0%;
  transition: width 0.2s linear;
  box-shadow: 0 0 8px rgba(255, 215, 0, 0.5);
}
.music-progress__time {
  display: flex;
  justify-content: space-between;
  margin-top: 4px;
  font-size: 10px;
  color: var(--color-text-muted);
  font-family: var(--font-title);
}

/* 控制按钮 */
.music-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 8px 16px 18px;
}
.music-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255, 215, 0, 0.3);
  background: rgba(255, 215, 0, 0.08);
  color: var(--color-gold);
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, transform 0.2s;
  -webkit-tap-highlight-color: transparent;
  padding: 0;
}
.music-btn:active {
  transform: scale(0.9);
}
.music-btn:hover {
  background: rgba(255, 215, 0, 0.18);
}
.music-btn--play {
  width: 48px;
  height: 48px;
  font-size: 18px;
  background: linear-gradient(135deg, var(--color-gold), var(--color-amber));
  color: var(--color-bg-deep);
  border-color: transparent;
  box-shadow: 0 4px 16px rgba(255, 215, 0, 0.4);
}
.music-btn--play:active {
  box-shadow: 0 2px 8px rgba(255, 215, 0, 0.3);
}
.music-btn--mode.is-active {
  background: linear-gradient(135deg, rgba(127, 219, 230, 0.3), rgba(79, 184, 199, 0.2));
  border-color: rgba(127, 219, 230, 0.6);
  color: var(--color-cyan);
  box-shadow: 0 0 12px rgba(127, 219, 230, 0.3);
}
.music-btn--mode.is-active::after {
  content: attr(data-mode-label);
  position: absolute;
  bottom: -18px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 9px;
  color: var(--color-cyan);
  letter-spacing: 0.1em;
  white-space: nowrap;
  pointer-events: none;
}
.music-btn--mode {
  position: relative;
}

/* 播放列表 */
.music-list {
  flex: 1;
  overflow-y: auto;
  padding: 4px 0 8px;
  -webkit-overflow-scrolling: touch;
}
.music-list::-webkit-scrollbar {
  width: 3px;
}
.music-list::-webkit-scrollbar-thumb {
  background: rgba(255, 215, 0, 0.3);
  border-radius: var(--radius-full);
}
.music-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  cursor: pointer;
  transition: background 0.2s;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  color: inherit;
  font: inherit;
  -webkit-tap-highlight-color: transparent;
}
.music-item:hover {
  background: rgba(255, 215, 0, 0.06);
}
.music-item.is-active {
  background: rgba(255, 215, 0, 0.12);
}
.music-item__icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  color: var(--color-text-muted);
}
.music-item.is-active .music-item__icon {
  background: var(--gradient-gold);
  color: var(--color-bg-deep);
}
.music-item__info {
  flex: 1;
  min-width: 0;
}
.music-item__name {
  font-size: 13px;
  color: var(--color-text-soft);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.music-item.is-active .music-item__name {
  color: var(--color-text-gold);
  font-weight: 600;
}
.music-item__empty {
  padding: 24px 16px;
  text-align: center;
  font-size: 12px;
  color: var(--color-text-muted);
}

/* 移动端适配 */
@media (max-width: 380px) {
  .music-panel {
    width: calc(100vw - 32px);
    right: 16px;
  }
  .music-fab {
    top: 16px;
    right: 16px;
  }
}