/* ==================== CHAPTER UNLOCK SYSTEM ==================== */
.td-unlock-progress {
  padding: 12px 16px;
  margin-bottom: 8px;
  background: var(--bg);
  border-radius: 8px;
}
.td-unlock-progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}
.td-unlock-progress-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text2);
}
.td-unlock-progress-val {
  font-size: 12px;
  font-weight: 700;
  color: #2F88FF;
}
.td-unlock-progress-bar {
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}
.td-unlock-progress-fill {
  height: 100%;
  background: #2F88FF;
  border-radius: 3px;
  transition: width 0.4s ease;
}

/* Chapter list item states */
.td-ch-item.locked {
  position: relative;
  opacity: 0.55;
  cursor: not-allowed !important;
}
.td-ch-item.locked:hover {
  background: transparent !important;
}
.td-ch-locked-overlay {
  position: absolute;
  inset: 0;
  background: rgba(148,163,184,0.08);
  border-radius: 8px;
  pointer-events: none;
  z-index: 1;
}
.td-ch-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  flex-shrink: 0;
  margin-right: 10px;
}
.td-ch-icon.locked {
  background: #f1f5f9;
  color: #94a3b8;
}
.td-ch-icon.studying {
  background: rgba(47,136,255,0.08);
  color: #2F88FF;
}
.td-ch-icon.completed {
  background: rgba(16,185,129,0.1);
  color: #10b981;
}

.td-ch-status-tag {
  display: inline-flex;
  align-items: center;
  padding: 1px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
}
.td-ch-status-tag.locked {
  background: #f1f5f9;
  color: #94a3b8;
}
.td-ch-status-tag.studying {
  background: rgba(47,136,255,0.08);
  color: #2F88FF;
}
.td-ch-status-tag.completed {
  background: rgba(16,185,129,0.1);
  color: #10b981;
}

.td-ch-score {
  font-size: 11px;
  color: #2F88FF;
  font-weight: 600;
  margin-left: 4px;
}

/* Toast notification */
.unlock-toast {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  background: #1e293b;
  color: #fff;
  padding: 12px 20px;
  border-radius: 8px;
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
  opacity: 0;
  transition: all 0.3s ease;
  z-index: 10000;
  max-width: 480px;
  pointer-events: none;
}
.unlock-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ==================== FAVORITES & NOTES ==================== */
.td-kp-enhance-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

.td-kp-fav-btn, .td-kp-note-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text3);
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
}
.td-kp-fav-btn:hover, .td-kp-note-btn:hover {
  border-color: #2F88FF;
  color: #2F88FF;
  background: rgba(47,136,255,0.04);
}
.td-kp-fav-btn.active {
  border-color: #2F88FF;
  color: #2F88FF;
  background: rgba(47,136,255,0.06);
}
.td-kp-note-btn.has-note {
  border-color: #2F88FF;
  color: #2F88FF;
}

.td-kp-note-editor {
  margin-top: 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  background: #fafbfc;
}
.td-kp-note-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  font-size: 12px;
  color: var(--text2);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.td-kp-note-textarea {
  width: 100%;
  min-height: 80px;
  padding: 10px 12px;
  border: none;
  outline: none;
  resize: vertical;
  font-size: 13px;
  line-height: 1.6;
  font-family: inherit;
  background: transparent;
  color: var(--text);
  box-sizing: border-box;
}
.td-kp-note-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 12px 8px;
  font-size: 11px;
  color: var(--text3);
}
.td-kp-note-saved {
  color: #10b981;
  font-weight: 600;
}

/* Favorites highlight animation */
.fav-highlight {
  animation: favHighlightPulse 2s ease;
}
@keyframes favHighlightPulse {
  0% { background: rgba(47,136,255,0.15); box-shadow: 0 0 0 3px rgba(47,136,255,0.2); }
  100% { background: transparent; box-shadow: none; }
}

/* ==================== FAVORITES PAGE ==================== */
.fav-page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 32px 16px;
}
.fav-page-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
}
.fav-page-stats {
  display: flex;
  gap: 16px;
}
.fav-stat-item {
  font-size: 13px;
  color: var(--text2);
}
.fav-stat-num {
  font-weight: 700;
  color: #2F88FF;
  margin-right: 2px;
}

.fav-filter-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 32px 16px;
}
.fav-filter-label {
  font-size: 13px;
  color: var(--text2);
}
.fav-filter-select {
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  color: var(--text);
  background: #fff;
  outline: none;
  cursor: pointer;
}
.fav-filter-select:focus {
  border-color: #2F88FF;
}

.fav-items-list {
  padding: 0 32px 32px;
}

.fav-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text3);
}
.fav-empty-text {
  font-size: 15px;
  font-weight: 600;
  margin-top: 16px;
  color: var(--text2);
}
.fav-empty-hint {
  font-size: 13px;
  margin-top: 6px;
}

.fav-group {
  margin-bottom: 20px;
}
.fav-group-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.fav-group-book {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}
.fav-group-count {
  font-size: 12px;
  color: var(--text3);
}

.fav-card {
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 8px;
  background: #fff;
  transition: box-shadow 0.2s;
}
.fav-card:hover {
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.fav-card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.fav-card-info { flex: 1; }
.fav-card-ch {
  font-size: 12px;
  color: var(--text3);
  margin-bottom: 2px;
}
.fav-card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}
.fav-card-actions {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
  margin-left: 12px;
}
.fav-card-btn {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  cursor: pointer;
  color: var(--text3);
  transition: all 0.2s;
}
.fav-card-btn:hover {
  border-color: #2F88FF;
  color: #2F88FF;
}
.fav-card-remove:hover {
  border-color: #ef4444;
  color: #ef4444;
  background: rgba(239,68,68,0.04);
}
.fav-card-note {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  margin-top: 8px;
  padding: 8px 10px;
  background: #f8fafc;
  border-radius: 6px;
  font-size: 12px;
  color: var(--text2);
  line-height: 1.5;
}
.fav-card-note svg {
  flex-shrink: 0;
  margin-top: 1px;
  color: #2F88FF;
}