/* ==========================================================================
   AuraSound Cloud - 檔案庫、章節自然排序、倍速、定時睡眠與等化器面板
   ========================================================================== */

/* 雲端檔案瀏覽器 (Cloud File Explorer) */
.explorer-container {
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* 麵包屑導航列 (Breadcrumb Bar) */
.breadcrumb-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: var(--radius-md);
  background: var(--bg-glass-card);
  border: 1px solid var(--glass-border-subtle);
  overflow-x: auto;
  white-space: nowrap;
  font-size: 13px;
  color: var(--text-secondary);
}

.breadcrumb-item {
  color: var(--text-muted);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.breadcrumb-item.active {
  color: var(--primary-cyan);
  font-weight: 600;
}

.breadcrumb-sep {
  color: var(--text-dim);
}

/* 工具與過濾列 (Natural Sort & Search) */
.toolbar-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.search-input-wrap {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
}

.search-input {
  width: 100%;
  height: 38px;
  padding: 0 12px 0 34px;
  border-radius: var(--radius-full);
  background: var(--bg-glass-card);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  font-size: 13px;
  outline: none;
  transition: var(--transition-fast);
}

.search-input:focus {
  border-color: var(--primary-cyan);
  box-shadow: 0 0 12px rgba(0, 242, 254, 0.25);
}

.search-icon-inside {
  position: absolute;
  left: 10px;
  color: var(--text-muted);
  pointer-events: none;
}

/* 自然排序切換鈕 (Natural Sort Toggle Pill) */
.sort-toggle-btn {
  height: 38px;
  padding: 0 12px;
  border-radius: var(--radius-full);
  background: var(--bg-glass-pill);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  font-size: 12px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  white-space: nowrap;
}

.sort-toggle-btn.active {
  background: rgba(0, 242, 254, 0.15);
  border-color: var(--primary-cyan);
  color: var(--primary-cyan);
}

/* 檔案清單卡片 (File Item Cards) */
.file-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.file-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  background: var(--bg-glass-card);
  border: 1px solid var(--glass-border-subtle);
  backdrop-filter: var(--glass-blur-sm);
  cursor: pointer;
  transition: var(--transition-fast);
}

.file-item:active {
  transform: scale(0.98);
  background: var(--bg-glass-active);
  border-color: var(--glass-border-glow);
}

.file-item.playing-now {
  border-color: var(--primary-cyan);
  background: rgba(0, 242, 254, 0.12);
  box-shadow: 0 4px 16px rgba(0, 242, 254, 0.2);
}

.file-left {
  display: flex;
  align-items: center;
  gap: 12px;
  overflow: hidden;
  flex: 1;
}

.file-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 18px;
}

.file-icon.folder {
  background: rgba(245, 175, 25, 0.18);
  color: var(--audiobook-gold);
}

.file-icon.audio {
  background: rgba(0, 242, 254, 0.15);
  color: var(--primary-cyan);
}

.file-details {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.file-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-sub {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

.badge-history-progress {
  color: var(--audiobook-gold);
  background: rgba(245, 175, 25, 0.15);
  padding: 1px 6px;
  border-radius: 4px;
  font-weight: 600;
}

/* ==========================================================================
   彈出設定選單 (倍速、定時器、等化器)
   ========================================================================== */

/* 倍速格狀選單 */
.speed-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-top: 10px;
}

.speed-option-btn {
  padding: 12px 6px;
  border-radius: var(--radius-md);
  background: var(--bg-glass-card-nested);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition-fast);
}

.speed-option-btn.active {
  background: var(--audiobook-gradient);
  border-color: var(--audiobook-gold);
  color: #fff;
  box-shadow: 0 4px 12px rgba(230, 92, 0, 0.4);
}

/* 睡眠定時清單 */
.timer-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 10px;
}

.timer-option-btn {
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: var(--bg-glass-card-nested);
  border: 1px solid var(--glass-border-subtle);
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.timer-option-btn.active {
  border-color: var(--primary-cyan);
  background: rgba(0, 242, 254, 0.12);
  color: var(--primary-cyan);
}

/* 五頻段等化器推桿組 */
.eq-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.eq-presets-scroll {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.eq-preset-chip {
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: var(--bg-glass-pill);
  border: 1px solid var(--glass-border-subtle);
  color: var(--text-secondary);
  font-size: 12px;
  white-space: nowrap;
  cursor: pointer;
}

.eq-preset-chip.active {
  background: var(--primary-gradient);
  color: #fff;
  font-weight: 700;
  border-color: var(--primary-cyan);
}

.eq-bands-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  background: var(--bg-glass-card-nested);
  padding: 16px 8px;
  border-radius: var(--radius-lg);
}

.eq-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.eq-val-badge {
  font-size: 11px;
  font-family: var(--font-family-mono);
  color: var(--primary-cyan);
}

.eq-vertical-slider-track {
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.eq-slider {
  writing-mode: vertical-lr;
  direction: rtl;
  width: 24px;
  height: 110px;
  cursor: pointer;
  accent-color: var(--primary-cyan);
}

.eq-band-name {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
}

.eq-band-desc {
  font-size: 9px;
  color: var(--text-muted);
}