/* ============================================
   bgm.css
   BGM mini player, panel, tracks, controls,
   script board viewer
   ============================================ */

/* --- BGM Mini Player --- */
#bgmMiniPlayer {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 900;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
  pointer-events: none;
}

/* --- BGM Panel --- */
#bgmPanel {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow), 0 0 30px rgba(0,0,0,0.5);
  width: 320px;
  max-height: 480px;
  overflow-y: auto;
  padding: 12px;
  backdrop-filter: blur(16px);
  pointer-events: all;
  display: none;
  flex-direction: column;
  gap: 4px;
}
#bgmPanel.open {
  display: flex;
}
#bgmPanel::-webkit-scrollbar {
  width: 4px;
}
#bgmPanel::-webkit-scrollbar-track {
  background: transparent;
}
#bgmPanel::-webkit-scrollbar-thumb {
  background: var(--line);
  border-radius: 2px;
}

/* --- BGM Panel Header --- */
.bgm-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 4px;
}
.bgm-panel-title {
  font-family: "Cinzel", serif;
  font-size: 13px;
  color: var(--brass);
  letter-spacing: 0.05em;
}
.bgm-panel-close {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
  padding: 0 2px;
  transition: color 0.2s;
}
.bgm-panel-close:hover { color: var(--ink-bright); }

/* --- BGM Category --- */
.bgm-category {
  margin-top: 8px;
}
.bgm-category-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 4px 6px 4px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.bgm-category-label::before {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--line);
}
.bgm-category-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--line);
}
.bgm-category-icon {
  font-size: 12px;
}

/* --- BGM Track --- */
.bgm-track {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 8px;
  border-radius: 7px;
  cursor: pointer;
  transition: background 0.15s;
  border: 1px solid transparent;
  pointer-events: all;
}
.bgm-track:hover {
  background: rgba(184, 134, 11, 0.1);
  border-color: var(--line);
}
.bgm-track.active {
  background: var(--brass-dim);
  border-color: rgba(184, 134, 11, 0.35);
}
.bgm-track-num {
  font-size: 10px;
  color: var(--muted);
  min-width: 16px;
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.bgm-track-info {
  flex: 1;
  min-width: 0;
}
.bgm-track-name {
  font-size: 12px;
  color: var(--ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.3;
}
.bgm-track.active .bgm-track-name { color: var(--brass); }
.bgm-track-meta {
  font-size: 10px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.bgm-track-hint {
  font-size: 10px;
  color: var(--muted);
  font-style: italic;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  opacity: 0.75;
}

/* --- BGM Playing Indicator --- */
.bgm-playing-indicator {
  display: none;
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}
.bgm-track.active .bgm-playing-indicator { display: block; }
.bgm-playing-indicator span {
  display: inline-block;
  width: 3px;
  background: var(--brass);
  border-radius: 2px;
  margin-right: 1px;
  animation: bgm-bar 0.8s ease-in-out infinite alternate;
  vertical-align: bottom;
}
.bgm-playing-indicator span:nth-child(1) { height: 6px; animation-delay: 0s; }
.bgm-playing-indicator span:nth-child(2) { height: 10px; animation-delay: 0.2s; }
.bgm-playing-indicator span:nth-child(3) { height: 7px; animation-delay: 0.4s; }
@keyframes bgm-bar {
  from { transform: scaleY(0.4); }
  to   { transform: scaleY(1); }
}
.bgm-track.active.paused .bgm-playing-indicator span {
  animation-play-state: paused;
}

/* --- BGM Bar --- */
#bgmBar {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  pointer-events: all;
  min-width: 52px;
  transition: all 0.2s;
}

/* --- Script Board --- */
#scriptBoardBtn {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
  color: var(--brass);
  font-size: 14px;
  cursor: pointer;
  padding: 7px 12px;
  pointer-events: all;
  transition: all 0.2s;
  white-space: nowrap;
}
#scriptBoardBtn:hover { color: var(--ink-bright); transform: scale(1.05); }

#scriptBoardOverlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(6px);
  justify-content: center;
  align-items: center;
  cursor: zoom-out;
}
#scriptBoardOverlay.open { display: flex; }
#scriptBoardOverlay img {
  max-width: 92vw;
  max-height: 92vh;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 0 60px rgba(0,0,0,0.6);
}
#scriptBoardCloseBtn {
  position: absolute;
  top: 16px;
  right: 24px;
  background: rgba(0,0,0,0.5);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50%;
  color: #fff;
  font-size: 22px;
  width: 40px;
  height: 40px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}
#scriptBoardCloseBtn:hover { background: rgba(180, 50, 50, 0.7); }

/* --- BGM Control Buttons --- */
#bgmToggleBtn {
  background: none;
  border: none;
  color: var(--brass);
  font-size: 16px;
  cursor: pointer;
  padding: 0;
  line-height: 1;
  transition: color 0.2s, transform 0.2s;
  flex-shrink: 0;
}
#bgmToggleBtn:hover { color: var(--ink-bright); transform: scale(1.1); }

#bgmPlayPauseBtn {
  background: none;
  border: none;
  color: var(--ink);
  font-size: 14px;
  cursor: pointer;
  padding: 0;
  line-height: 1;
  transition: color 0.2s;
  flex-shrink: 0;
  display: none;
}
#bgmPlayPauseBtn:hover { color: var(--ink-bright); }
#bgmPlayPauseBtn.visible { display: block; }

#bgmTrackLabel {
  font-size: 11px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 160px;
  display: none;
  flex: 1;
}
#bgmTrackLabel.visible { display: block; }

#bgmVolumeSlider {
  -webkit-appearance: none;
  appearance: none;
  width: 64px;
  height: 3px;
  border-radius: 2px;
  background: var(--line);
  cursor: pointer;
  outline: none;
  display: none;
  flex-shrink: 0;
}
#bgmVolumeSlider.visible { display: block; }
#bgmVolumeSlider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--brass);
  cursor: pointer;
  transition: background 0.2s;
}
#bgmVolumeSlider::-webkit-slider-thumb:hover { background: var(--ink-bright); }