/* ═══════════════════════════════════════════
   music-player.css — Trình phát nhạc nền
   ═══════════════════════════════════════════ */

.music-player {
  max-width: 680px;
  margin: 1.8rem auto 0;
  position: relative;
}

/* ─── Playlist panel ─── */
.playlist-panel {
  background: var(--bg-music-bar);
  border: 1px solid var(--border-card);
  border-radius: 20px 20px 0 0;
  box-shadow: 0 -4px 24px rgba(201,132,142,0.1);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4,0,0.2,1), opacity 0.3s ease;
  opacity: 0;
}
.playlist-panel.open {
  max-height: 260px;
  opacity: 1;
  overflow-y: auto;
}
.playlist-panel::-webkit-scrollbar { width: 4px; }
.playlist-panel::-webkit-scrollbar-thumb { background: var(--petal); border-radius: 2px; }

.playlist-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.8rem 1.2rem 0.5rem;
  font-family: 'Lora', serif;
  font-size: 0.8rem;
  color: var(--rose-gold);
  border-bottom: 1px solid var(--border-card);
  position: sticky;
  top: 0;
  background: var(--bg-music-bar);
  z-index: 1;
}
.playlist-close {
  cursor: pointer;
  font-size: 0.9rem;
  opacity: 0.6;
  transition: opacity 0.2s;
}
.playlist-close:hover { opacity: 1; }

.playlist-list {
  list-style: none;
  padding: 0.4rem 0;
}
.playlist-list li {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.55rem 1.2rem;
  font-family: 'Lora', serif;
  font-size: 0.82rem;
  color: var(--soft-ink);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  border-radius: 8px;
  margin: 0 0.4rem;
}
.playlist-list li:hover { background: rgba(255,192,203,0.12); color: var(--ink); }
.playlist-list li.active {
  background: rgba(255,192,203,0.2);
  color: var(--mauve);
  font-style: italic;
}
.playlist-list li .track-num {
  font-size: 0.72rem;
  color: var(--rose-gold);
  min-width: 1.4rem;
  text-align: right;
}
.playlist-list li .track-name { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.playlist-list li .track-playing { font-size: 0.9rem; }

/* ─── Controls bar ─── */
.music-bar {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  background: var(--bg-music-bar);
  border-radius: 50px;
  padding: 0.7rem 1.2rem;
  box-shadow: 0 4px 20px rgba(201,132,142,0.12);
  border: 1px solid rgba(255,192,203,0.2);
  transition: border-radius 0.3s;
}
.playlist-panel.open + .music-bar {
  border-radius: 0 0 50px 50px;
  border-top: none;
}

.music-icon {
  font-size: 1.15rem;
  cursor: pointer;
  transition: transform 0.2s;
  user-select: none;
  flex-shrink: 0;
}
.music-icon:hover { transform: scale(1.2); }
#musicBtn { font-size: 1.4rem; }

.music-info { flex: 1; min-width: 0; }
.music-title {
  font-size: 0.82rem;
  color: var(--ink);
  font-family: 'Lora', serif;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 0.25rem;
}

/* Seek bar row */
.music-progress-wrap {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.music-time {
  font-size: 0.65rem;
  color: var(--rose-gold);
  font-family: monospace;
  min-width: 2.6rem;
  flex-shrink: 0;
}
.music-seek {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 3px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--blush) var(--prog, 0%), rgba(255,192,203,0.3) var(--prog, 0%));
  outline: none;
  cursor: pointer;
}
.music-seek::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--blush);
  box-shadow: 0 1px 4px rgba(201,132,142,0.4);
  transition: transform 0.15s;
}
.music-seek::-webkit-slider-thumb:hover { transform: scale(1.3); }
.music-seek::-moz-range-thumb {
  width: 12px; height: 12px;
  border: none;
  border-radius: 50%;
  background: var(--blush);
}

/* Wave */
.music-wave {
  display: flex; gap: 3px; align-items: flex-end; height: 20px; flex-shrink: 0;
}
.music-wave span {
  display: block; width: 3px;
  background: var(--blush);
  border-radius: 2px;
  animation: wave 1s ease-in-out infinite;
}
.music-wave span:nth-child(1) { height: 8px;  animation-delay: 0s; }
.music-wave span:nth-child(2) { height: 16px; animation-delay: 0.1s; }
.music-wave span:nth-child(3) { height: 12px; animation-delay: 0.2s; }
.music-wave span:nth-child(4) { height: 18px; animation-delay: 0.15s; }
.music-wave span:nth-child(5) { height: 10px; animation-delay: 0.05s; }
@keyframes wave {
  0%,100% { transform: scaleY(1); }
  50%      { transform: scaleY(0.4); }
}
.music-wave.paused span { animation-play-state: paused; }

/* ─── Unified icon buttons (prev/play/next/playlist) ─── */
.music-btn {
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--blush);
  padding: 0;
  transition: transform 0.2s, color 0.25s, background 0.2s;
  border-radius: 50%;
  outline: none;
}
.music-btn:hover { transform: scale(1.18); color: var(--rose-gold); }
.music-btn:active { transform: scale(0.9); }

.music-btn-prev,
.music-btn-next {
  width: 30px; height: 30px;
  color: var(--blush);
  opacity: 0.85;
}
.music-btn-prev:hover,
.music-btn-next:hover { opacity: 1; }

.music-btn-play {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, rgba(255,192,203,0.22), rgba(242,167,187,0.32));
  border: 1.5px solid rgba(255,192,203,0.5);
  color: var(--blush);
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 2px 10px rgba(201,132,142,0.22);
}
.music-btn-play:hover {
  background: linear-gradient(135deg, rgba(255,192,203,0.38), rgba(242,167,187,0.48));
  box-shadow: 0 4px 16px rgba(201,132,142,0.35);
  transform: scale(1.1);
  color: var(--rose-gold);
}
.music-btn-play:active { transform: scale(0.93); }

.music-btn-playlist {
  width: 30px; height: 30px;
  color: var(--blush);
  opacity: 0.85;
}
.music-btn-playlist:hover { opacity: 1; }

.music-btn svg { display: block; pointer-events: none; }

html.dark .music-btn-play {
  background: linear-gradient(135deg, rgba(242,167,187,0.12), rgba(200,100,130,0.2));
  border-color: rgba(242,167,187,0.25);
}
html.dark .music-btn-play:hover {
  background: linear-gradient(135deg, rgba(242,167,187,0.22), rgba(200,100,130,0.32));
  transform: scale(1.1);
}

.icon-play, .icon-pause { pointer-events: none; display: block; }

/* ─── VOLUME CONTROL ─── */
.music-volume-wrap {
  position: relative;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.music-btn-volume {
  width: 30px; height: 30px;
  color: var(--blush);
  opacity: 0.85;
}
.music-btn-volume:hover { opacity: 1; }
.music-btn-volume svg { pointer-events: none; }

.music-volume-popup {
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-music-bar);
  border: 1px solid var(--border-card);
  border-radius: 50px;
  padding: 0.5rem 0.9rem;
  box-shadow: 0 4px 20px rgba(201,132,142,0.18);
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
  transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s;
  white-space: nowrap;
  z-index: 5;
}
.music-volume-popup.open {
  opacity: 1;
  pointer-events: auto;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.music-volume-popup::after {
  content: '';
  position: absolute;
  top: 100%; left: 50%;
  transform: translateX(-50%);
  width: 9px; height: 9px;
  background: var(--bg-music-bar);
  border-right: 1px solid var(--border-card);
  border-bottom: 1px solid var(--border-card);
  clip-path: polygon(0 0, 100% 0, 100% 100%);
}

/* Hover mở popup âm lượng — chỉ áp dụng cho chuột thật (desktop),
   để không xung đột với thao tác chạm trên mobile (dùng click/tap để ghim) */
@media (hover: hover) and (pointer: fine) {
  .music-volume-wrap:hover .music-volume-popup {
    opacity: 1;
    pointer-events: auto;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
  }
}

.music-volume-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100px; height: 3px;
  border-radius: 2px;
  outline: none;
  cursor: pointer;
  background: linear-gradient(90deg,
    var(--blush) var(--vprog, 80%),
    rgba(255,192,203,0.3) var(--vprog, 80%)
  );
}
.music-volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 13px; height: 13px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--petal), var(--blush));
  box-shadow: 0 1px 6px rgba(201,132,142,0.5);
  cursor: pointer;
  transition: transform 0.15s;
}
.music-volume-slider::-webkit-slider-thumb:hover { transform: scale(1.25); }
.music-volume-slider::-moz-range-thumb {
  width: 13px; height: 13px;
  border: none; border-radius: 50%;
  background: var(--blush);
}

.music-volume-value {
  font-size: 0.65rem;
  font-family: monospace;
  color: var(--rose-gold);
  width: 2.4rem;
  text-align: right;
  flex-shrink: 0;
}

html.dark .music-volume-popup { background: var(--bg-music-bar); }
html.dark .music-volume-popup::after { background: var(--bg-music-bar); }

/* ─── DARK MODE ─── */
html.dark .music-bar,
html.dark .playlist-panel {
  background: var(--bg-music-bar);
  border-color: var(--border-card);
}
html.dark .playlist-header {
  background: var(--bg-music-bar);
  border-color: var(--border-card);
}
html.dark .playlist-list li:hover {
  background: rgba(242,167,187,0.08);
}
html.dark .playlist-list li.active {
  background: rgba(242,167,187,0.12);
}
html.dark .music-seek {
  background: linear-gradient(90deg, var(--blush) var(--prog, 0%), rgba(242,167,187,0.15) var(--prog, 0%));
}