/* ==========================================================================
   行测模块样式 (三级分区树 + 错题卡片流 + 高清大图直显 + 精准排版)
   ========================================================================== */

.xingce-container {
  display: flex;
  height: 100%;
  width: 100%;
  overflow: hidden;
}

/* 左侧三级分类树面板 */
.tree-panel {
  width: 260px;
  min-width: 260px;
  height: 100%;
  background: #FAF9F7;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
}

.tree-header {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.tree-title {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.tree-content {
  flex: 1;
  overflow-y: auto;
  padding: 8px 6px;
}

.tree-node {
  user-select: none;
  margin-bottom: 2px;
}

.tree-node-row {
  display: flex;
  align-items: center;
  padding: 6px 8px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-primary);
  transition: var(--transition);
  gap: 6px;
}

.tree-node-row:hover {
  background-color: var(--bg-hover);
}

.tree-node-row.active {
  background-color: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
}

.tree-toggle {
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  color: var(--text-tertiary);
  transition: transform 150ms ease;
}

.tree-toggle.open {
  transform: rotate(90deg);
}

.tree-node-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tree-badge {
  font-size: 11px;
  padding: 1px 6px;
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.05);
  color: var(--text-secondary);
  font-weight: 500;
}

.tree-node-row.active .tree-badge {
  background: rgba(229, 133, 34, 0.15);
  color: var(--primary);
}

.tree-subnodes {
  padding-left: 14px;
  border-left: 1px dashed rgba(0, 0, 0, 0.08);
  margin-left: 12px;
  margin-top: 2px;
}

/* 右侧错题主内容区 */
.xingce-main {
  flex: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  background: var(--bg-main);
  overflow: hidden;
}

/* 顶部工具栏与筛选栏 */
.xingce-toolbar {
  padding: 14px 20px 10px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toolbar-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.search-input-wrap {
  position: relative;
  width: 320px;
}

.search-input-wrap .input {
  padding-left: 32px;
  height: 34px;
}

.search-icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
  pointer-events: none;
}

.toolbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.toolbar-filters {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 4px;
  font-size: 12.5px;
}

.filter-label {
  color: var(--text-tertiary);
  font-weight: 500;
  margin-right: 2px;
}

.filter-chip {
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  background: #FAF9F7;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 12px;
  transition: var(--transition);
}

.filter-chip:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.filter-chip.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  font-weight: 500;
}

/* 题目卡片列表区 */
.question-list-wrap {
  flex: 1;
  overflow-y: auto;
  padding: 16px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.question-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 0;
  color: var(--text-tertiary);
  gap: 12px;
}

.question-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 18px 20px;
  transition: var(--transition);
  cursor: pointer;
  position: relative;
}

.question-card:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
}

.question-card.mastered-card {
  opacity: 0.65;
  background: #FCFCFA;
}

.card-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  gap: 10px;
}

.card-meta-left {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.card-meta-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.wrong-counter {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: #FFF5F5;
  border: 1px solid #FFE3E3;
  color: #C92A2A;
  padding: 2px 6px;
  border-radius: 6px;
  font-size: 11.5px;
  font-weight: 600;
}

.wrong-btn {
  border: none;
  background: transparent;
  color: #C92A2A;
  cursor: pointer;
  font-weight: bold;
  padding: 0 2px;
}

.wrong-btn:hover {
  color: #A61E4D;
}

/* ================= 题干与高清大图渲染 ================= */

.card-stem {
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--text-primary);
  margin-bottom: 12px;
  white-space: pre-wrap;
  word-break: break-word;
}

.card-stem.collapsed {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  white-space: normal;
  line-height: 1.6;
}

/* 高清大图直显图片框容器 */
.question-image-box {
  margin: 12px 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.question-embedded-img {
  display: block;
  max-width: 100%;
  width: auto;
  max-height: 520px;
  border-radius: 8px;
  border: 1px solid var(--border);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  background: #FFFFFF;
  padding: 6px;
  object-fit: contain;
  cursor: zoom-in;
  transition: var(--transition);
}

.question-embedded-img:hover {
  border-color: var(--primary-border);
  box-shadow: var(--shadow-md);
}

/* 兜底附图卡片（大图排列） */
.question-images-gallery {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 14px 0 8px;
  padding: 12px 14px;
  background: #FAF9F7;
  border-radius: 8px;
  border: 1px dashed var(--border);
}

.gallery-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}

.gallery-item {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: #FFFFFF;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8px;
}

.gallery-img {
  max-height: 480px;
  max-width: 100%;
  object-fit: contain;
  cursor: zoom-in;
  display: block;
}

/* 编辑弹窗中的图片缩略图列表 */
.edit-images-list {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.edit-img-thumb-card {
  position: relative;
  width: 120px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px;
  background: #FAF9F7;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.edit-img-preview {
  width: 100%;
  height: 75px;
  object-fit: contain;
  border-radius: 4px;
  background: #FFFFFF;
}

.edit-img-actions {
  display: flex;
  width: 100%;
  justify-content: space-between;
  align-items: center;
}

.delete-img-btn {
  background: #FFF5F5;
  border: 1px solid #FFE3E3;
  color: #C92A2A;
  border-radius: 4px;
  font-size: 11px;
  padding: 1px 6px;
  cursor: pointer;
}
.delete-img-btn:hover {
  background: #FFE3E3;
}

.insert-tag-btn {
  background: #E7F5FF;
  border: 1px solid #D0EBFF;
  color: #1971C2;
  border-radius: 4px;
  font-size: 11px;
  padding: 1px 6px;
  cursor: pointer;
}

/* 全屏大图 Lightbox 查看器 */
.lightbox-mask {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.82);
  backdrop-filter: blur(5px);
  z-index: 3000;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: zoom-out;
  animation: fadeIn 150ms ease;
}

.lightbox-img {
  max-width: 92vw;
  max-height: 92vh;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.6);
  cursor: default;
}

/* 卡片展开详情区 */
.card-expanded-body {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 14px;
  animation: fadeIn 150ms ease;
}

/* 选项列表：逐行渲染，每个选项单独一行 */
.options-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
}

.option-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 16px;
  border-radius: 6px;
  background: #F8F9FA;
  font-size: 14px;
  line-height: 1.9;
  border: 1px solid transparent;
  width: 100%;
  box-sizing: border-box;
}

.option-item.is-correct {
  background: #EBFBEE;
  border-color: #B2F2BB;
  color: #2B8A3E;
  font-weight: 500;
}

.option-item.is-my-wrong {
  background: #FFF5F5;
  border-color: #FFC9C9;
  color: #C92A2A;
}

.option-label {
  font-weight: 700;
  min-width: 24px;
  color: var(--text-secondary);
  line-height: 1.9;
  flex-shrink: 0;
}

.option-item.is-correct .option-label {
  color: #2B8A3E;
}

.option-item.is-my-wrong .option-label {
  color: #C92A2A;
}

.option-content {
  flex: 1;
  white-space: pre-wrap;
  line-height: 1.9;
  word-break: break-word;
}

.answer-summary-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 16px;
  background: #FAF9F7;
  border-radius: 8px;
  font-size: 13.5px;
}

/* 解析专属排版：保留原始换行与 1.9 倍行高，高清直显图片 */
.analysis-box {
  background: #F8F9FA;
  padding: 14px 18px;
  border-radius: 8px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--text-primary);
  border-left: 3.5px solid #CED4DA;
}

.analysis-title {
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.analysis-content {
  white-space: pre-wrap;
  line-height: 1.9;
  word-break: break-word;
}

.note-box {
  background: #FFF9DB;
  border: 1px solid #FFE066;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 13.5px;
  line-height: 1.9;
  color: #5C3C00;
}

.note-title {
  font-weight: 600;
  margin-bottom: 4px;
}

.note-content {
  white-space: pre-wrap;
  line-height: 1.9;
  word-break: break-word;
}

.card-footer-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 4px;
}