/* 与题目详情页 problem_description 锁定遮罩一致（视觉样式相同） */
/* 代码笔记正文含长文/代码块/渐进渲染，#markdown-body 实际高度远大于题面区；
   若遮罩 inset:0 贴满容器会拉得很长，故限制预览区高度并裁剪溢出。 */
#markdown-body.cn-lock-wrap {
  position: relative;
  min-height: 520px;
  max-height: min(99vh, 999px);
  overflow: hidden;
}

#markdown-body.cn-lock-wrap > *:not(.pd-lock-overlay) {
  filter: blur(7px);
  user-select: none;
  pointer-events: none;
}

#markdown-body .pd-lock-overlay {
  position: absolute;
  inset: 0;
  z-index: 15;
  max-height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px 16px;
  background: linear-gradient(180deg, rgba(245, 246, 248, 0.55) 0%, rgba(225, 228, 232, 0.88) 60%, rgba(215, 219, 224, 0.94) 100%);
  color: #1f2328;
  border-radius: 6px;
  backdrop-filter: saturate(85%);
  pointer-events: auto;
}

#markdown-body .pd-lock-overlay__icon {
  width: 64px;
  height: 64px;
  margin-bottom: 18px;
  opacity: 0.85;
  color: #6b7280;
}

#markdown-body .pd-lock-overlay__title {
  font-size: 22px;
  font-weight: 600;
  margin: 4px 0 10px;
  letter-spacing: 1px;
  color: #1f2328;
}

#markdown-body .pd-lock-overlay__hint {
  font-size: 14px;
  color: #4b5563;
  line-height: 1.7;
  max-width: 520px;
}

#markdown-body .pd-lock-overlay__hint a {
  color: #1890ff;
  text-decoration: none;
  margin: 0 2px;
  font-weight: 500;
}

#markdown-body .pd-lock-overlay__hint a:hover {
  text-decoration: underline;
}

#markdown-body .pd-lock-overlay__actions {
  margin-top: 16px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

#markdown-body .pd-lock-overlay__btn {
  display: inline-flex;
  align-items: center;
  padding: 8px 20px;
  font-size: 14px;
  border-radius: 6px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

#markdown-body .pd-lock-overlay__btn--primary {
  background: #1890ff;
  color: #fff;
}

#markdown-body .pd-lock-overlay__btn--primary:hover {
  background: #40a9ff;
  color: #fff;
}

#markdown-body .pd-lock-overlay__btn--ghost {
  background: transparent;
  color: #1f2328;
  border-color: rgba(31, 35, 40, 0.35);
}

#markdown-body .pd-lock-overlay__btn--ghost:hover {
  border-color: #1f2328;
  color: #1f2328;
  background: rgba(255, 255, 255, 0.35);
}

.theme--dark #markdown-body .pd-lock-overlay {
  background: linear-gradient(180deg, rgba(30, 30, 32, 0.55) 0%, rgba(20, 20, 22, 0.88) 60%, rgba(15, 15, 18, 0.94) 100%);
  color: #f0f0f0;
}

.theme--dark #markdown-body .pd-lock-overlay__icon {
  color: #d1d5db;
}

.theme--dark #markdown-body .pd-lock-overlay__title {
  color: #f5f5f5;
}

.theme--dark #markdown-body .pd-lock-overlay__hint {
  color: #d6d6d6;
}

.theme--dark #markdown-body .pd-lock-overlay__btn--ghost {
  color: #f0f0f0;
  border-color: rgba(255, 255, 255, 0.45);
}

.theme--dark #markdown-body .pd-lock-overlay__btn--ghost:hover {
  border-color: #fff;
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
}

/* 锁定设置弹窗 */
.cn-visibility-dialog-mask {
  position: fixed;
  inset: 0;
  z-index: 10050;
  background: rgba(0, 0, 0, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  overflow-y: auto;
}

.cn-visibility-dialog {
  background: #fff;
  border-radius: 8px;
  width: min(420px, 100%);
  max-height: min(90vh, 720px);
  overflow-y: auto;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.18);
  padding: 20px 22px;
  box-sizing: border-box;
  flex-shrink: 0;
}

.cn-visibility-dialog--wide {
  width: min(520px, 100%);
}

.cn-visibility-dialog__row--pset-head {
  width: 100%;
  justify-content: space-between;
  flex-wrap: wrap;
}

.cn-visibility-dialog__pset-count {
  font-size: 12px;
  color: #6b7280;
}

.cn-visibility-dialog__pset-panel {
  width: 100%;
  max-width: 100%;
  margin: 0 0 4px;
  padding: 10px 12px;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  background: #f9fafb;
  box-sizing: border-box;
}

.cn-visibility-dialog__pset-panel-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
  font-size: 12px;
  color: #6b7280;
}

.cn-visibility-dialog__pset-panel-meta strong {
  color: #374151;
  font-weight: 600;
}

.cn-visibility-dialog__pset-search {
  width: 100%;
  box-sizing: border-box;
  padding: 7px 10px;
  margin-bottom: 8px;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  font-size: 13px;
}

.cn-visibility-dialog__pset-list {
  max-height: min(280px, 42vh);
  min-height: 80px;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  display: flex;
  flex-direction: column;
  gap: 4px;
  scrollbar-gutter: stable;
}

.cn-visibility-dialog__pset-list::-webkit-scrollbar {
  width: 6px;
}

.cn-visibility-dialog__pset-list::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.18);
  border-radius: 3px;
}

.cn-visibility-dialog__pset-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 6px 8px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  color: #374151;
  flex-shrink: 0;
}

.cn-visibility-dialog__pset-item input[type="checkbox"] {
  margin-top: 2px;
  flex-shrink: 0;
}

.cn-visibility-dialog__pset-item:hover {
  background: #eef2ff;
}

.cn-visibility-dialog__pset-item--checked {
  background: #e8f3ff;
}

.cn-visibility-dialog__pset-item-label {
  flex: 1;
  min-width: 0;
  word-break: break-word;
}

.cn-visibility-dialog__pset-tag {
  flex-shrink: 0;
  font-size: 11px;
  padding: 1px 6px;
  border-radius: 4px;
  background: #fff7e6;
  color: #d48806;
  border: 1px solid #ffe58f;
}

.cn-visibility-dialog__pset-empty {
  margin: 8px 0;
  font-size: 13px;
  color: #9ca3af;
  text-align: center;
}

.cn-visibility-dialog__title {
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 12px;
  color: #1f2328;
}

.cn-visibility-dialog__hint {
  font-size: 13px;
  color: #6b7280;
  margin: 0 0 16px;
  line-height: 1.5;
}

.cn-visibility-dialog__row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  font-size: 14px;
  color: #374151;
}

.cn-visibility-dialog__row--group {
  margin-left: 20px;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
}

.cn-visibility-dialog__footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 18px;
}

.cn-visibility-dialog__btn {
  padding: 8px 16px;
  font-size: 14px;
  border-radius: 6px;
  border: 1px solid #d1d5db;
  cursor: pointer;
  background: #fff;
  color: #374151;
}

.cn-visibility-dialog__btn--primary {
  background: #ffa116;
  border-color: #ffa116;
  color: #fff;
}

.cn-visibility-dialog__btn--primary:hover {
  background: #ff8800;
}

.theme--dark .cn-visibility-dialog {
  background: #161b22;
  border: 1px solid #30363d;
}

.theme--dark .cn-visibility-dialog__title {
  color: #f0f0f0;
}

.theme--dark .cn-visibility-dialog__hint,
.theme--dark .cn-visibility-dialog__row {
  color: #c9d1d9;
}

.theme--dark .cn-visibility-dialog__pset-count,
.theme--dark .cn-visibility-dialog__pset-panel-meta {
  color: #8b949e;
}

.theme--dark .cn-visibility-dialog__pset-panel-meta strong {
  color: #c9d1d9;
}

.theme--dark .cn-visibility-dialog__pset-list::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.22);
}

.theme--dark .cn-visibility-dialog__pset-panel {
  background: #0d1117;
  border-color: #30363d;
}

.theme--dark .cn-visibility-dialog__pset-search {
  background: #161b22;
  border-color: #30363d;
  color: #c9d1d9;
}

.theme--dark .cn-visibility-dialog__pset-item {
  color: #c9d1d9;
}

.theme--dark .cn-visibility-dialog__pset-item:hover {
  background: #21262d;
}

.theme--dark .cn-visibility-dialog__pset-item--checked {
  background: #1c2d41;
}

.theme--dark .cn-visibility-dialog__pset-tag {
  background: #2b2111;
  border-color: #594214;
  color: #d89614;
}

.theme--dark .cn-visibility-dialog__btn {
  background: #21262d;
  border-color: #30363d;
  color: #c9d1d9;
}

.edit-article-link.cn-lock-btn--active {
  background: rgba(255, 161, 22, 0.12);
}