/* ========== 全局样式 ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.6;
}

/* ========== 应用布局 ========== */
.app {
  display: flex;
  min-height: 100vh;
}

/* ========== 侧边栏 ========== */
.sidebar {
  width: 220px;
  min-height: 100vh;
  background: var(--sidebar-bg);
  color: #fff;
  position: sticky;
  top: 0;
  overflow-y: auto;
  flex-shrink: 0;
  z-index: 100;
}

.sidebar-header {
  padding: 18px 20px;
  font-size: 16px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  background: var(--sidebar-bg);
  position: sticky;
  top: 0;
  z-index: 10;
}

.sidebar-header i {
  font-size: 22px;
  color: var(--primary-light);
}

.sidebar-header span {
  color: #fff;
}

.nav-menu {
  padding: 8px 0 20px;
}

/* ========== 教师证件照区域 ========== */
.teacher-photo-section {
  padding: 16px;
  text-align: center;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.teacher-photo-wrap {
  width: 96px;
  height: 120px;
  margin: 0 auto 10px;
  border-radius: 6px;
  overflow: hidden;
  background: rgba(255,255,255,0.08);
  border: 2px solid rgba(255,255,255,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
}

.teacher-photo-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.teacher-photo-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.4);
  font-size: 12px;
  width: 100%;
  height: 100%;
}

.teacher-photo-placeholder i {
  font-size: 28px;
  margin-bottom: 6px;
}

#btnChangeTeacherPhoto {
  margin-top: 4px;
  font-size: 12px;
  padding: 4px 10px;
}

.nav-group {
  margin-bottom: 4px;
}

.nav-title {
  padding: 10px 20px 6px;
  font-size: 12px;
  color: rgba(255,255,255,0.35);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
  transition: color 0.2s;
}

.nav-title:hover {
  color: rgba(255,255,255,0.65);
}

/* ========== 导航主线色条（学生/班级/教师） ==========
   给每个 nav-group 加主线 class（nav-group--student / --class / --teacher / --home），
   在标题左侧绘制对应颜色竖条，并把标题文字染成同色，使三条主线一目了然。
   用 .nav-menu 前缀提升特异性，确保覆盖 [data-theme="dark"] .nav-title 的颜色规则。 */
.nav-menu .nav-group--student > .nav-title {
  border-left: 4px solid #1890ff;
  color: #4ba7ff;
  padding-left: 16px;
}
.nav-menu .nav-group--class > .nav-title {
  border-left: 4px solid #fa8c16;
  color: #ffa940;
  padding-left: 16px;
}
.nav-menu .nav-group--teacher > .nav-title {
  border-left: 4px solid #52c41a;
  color: #73d13d;
  padding-left: 16px;
}
.nav-menu .nav-group--home > .nav-title {
  border-left: 4px solid var(--primary);
  color: #ffffff;
  padding-left: 16px;
}
/* 主线分区的极淡底色，进一步区隔板块（不影响 item 悬停/选中态） */
.nav-menu .nav-group--student { background: rgba(24,144,255,0.05); }
.nav-menu .nav-group--class  { background: rgba(250,140,22,0.05); }
.nav-menu .nav-group--teacher { background: rgba(82,196,26,0.05); }

/* ========== 首页"导航速览"色条图例（首页使用引导） ========== */
.nav-legend {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  padding: 12px 16px;
  margin-bottom: 16px;
  font-size: 13px;
  color: var(--text-2);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
}
.nav-legend-title {
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-dot {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  display: inline-block;
  flex-shrink: 0;
}
.nav-dot.dot-student { background: #1890ff; }
.nav-dot.dot-class   { background: #fa8c16; }
.nav-dot.dot-teacher { background: #52c41a; }
.nav-dot.dot-home    { background: var(--primary); }
.nav-legend-note {
  color: var(--text-3);
  font-size: 12px;
}

.nav-title .nav-toggle {
  font-size: 10px;
  transition: transform 0.2s;
  margin-left: 6px;
}

.nav-group.collapsed .nav-toggle {
  transform: rotate(-90deg);
}

.nav-group.collapsed .nav-item {
  display: none;
}

/* ========== 左栏导航高度自适应右栏（自动折叠尾部分组） ========== */
/* 自动折叠：被折叠的分组整体隐藏（含标题），点击「展开全部导航」后整体恢复。
   与用户手动折叠 .collapsed 互不影响——自动折叠用 .auto-collapsed 区分。 */
.nav-group.auto-collapsed {
  display: none;
}
/* 处于溢出状态时给侧栏加纵向滚动，确保「展开全部导航」按钮可达 */
.sidebar.nav-overflow {
  overflow-y: auto;
}
/* 展开全部后侧栏允许完整滚动，不再隐藏任何分组 */
.sidebar.nav-expanded {
  overflow-y: auto;
}
.nav-more-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: calc(100% - 24px);
  margin: 6px 12px 12px;
  padding: 9px 12px;
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}
.nav-more-btn:hover {
  background: rgba(255,255,255,0.16);
  border-color: rgba(255,255,255,0.28);
}
.nav-more-btn:focus {
  outline: none;
  box-shadow: 0 0 0 2px rgba(24,144,255,0.35);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 20px 10px 24px;
  color: rgba(255,255,255,0.65);
  text-decoration: none;
  transition: all 0.2s;
  font-size: 14px;
  border-left: 3px solid transparent;
  cursor: pointer;
}

.nav-item:hover {
  color: #fff;
  background: rgba(255,255,255,0.06);
}

.nav-item.active {
  color: #fff;
  background: var(--sidebar-active-bg);
  border-left-color: var(--primary);
}

.nav-item i {
  width: 18px;
  font-size: 15px;
  text-align: center;
}

/* ========== 主内容 ========== */
.main {
  flex: 1;
  /* 关键：flex 子项默认 min-width:auto，内部出现 nowrap 单行文本时
     会被撑到文字的总宽度（页面横向无限拉长）。置 0 才能正常收缩+省略号。 */
  min-width: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg-page);
}

/* ========== 顶部栏 ========== */
.topbar {
  background: #fff;
  padding: 12px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
  position: sticky;
  top: 0;
  z-index: 50;
  flex-shrink: 0;
}

.class-info {
  display: flex;
  align-items: baseline;
  gap: 12px;
  min-width: 0;
}

.class-info h2 {
  font-size: 18px;
  color: var(--text-primary);
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex-shrink: 0;
}

.class-info span {
  font-size: 13px;
  color: #888;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: #666;
}

/* ========== 班级切换栏（多班级支持） ========== */
.class-switch-bar {
  background: #f7f9fc;
  border-bottom: 1px solid #e6ebf2;
  padding: 8px 28px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.class-switch-bar .csb-label {
  font-size: 13px;
  color: #555;
  font-weight: 600;
  white-space: nowrap;
}
.class-switch-bar #classSelector {
  min-width: 200px;
  max-width: 320px;
  padding: 6px 10px;
  border: 1px solid #d9e1ec;
  border-radius: 6px;
  background: #fff;
  font-size: 14px;
  color: var(--text-primary);
  cursor: pointer;
}
.class-switch-bar .btn-sm {
  padding: 6px 12px;
  font-size: 13px;
}

/* ========== 用户下拉菜单 ========== */
.user-dropdown {
  position: relative;
  display: inline-block;
}

.user-avatar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px 4px 6px;
  border-radius: 20px;
  cursor: pointer;
  transition: background 0.2s;
  user-select: none;
}

.user-avatar:hover {
  background: #f0f0f0;
}

.user-avatar i:first-child {
  font-size: 28px;
  color: var(--primary);
}

.user-avatar span {
  font-size: 14px;
  color: #333;
  font-weight: 500;
}

.dropdown-menu {
  display: none;
  position: absolute;
  right: 0;
  top: calc(100% + 4px);
  min-width: 180px;
  background: #ffffff;
  border-radius: 10px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
  padding: 6px 0;
  z-index: 999;
  border: 1px solid #f0f0f0;
}

.dropdown-menu.show {
  display: block;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  font-size: 14px;
  color: #333;
  cursor: pointer;
  transition: background 0.15s;
}

.dropdown-item:hover {
  background: #f5f5f5;
}

.dropdown-item i {
  width: 18px;
  color: #666;
}

.dropdown-divider {
  height: 1px;
  background: #f0f0f0;
  margin: 4px 12px;
}

/* ========== 内容区域 ========== */
.content {
  padding: 20px 28px 40px;
  flex: 1;
  min-width: 0;
}

/* ========== 卡片 ========== */
.card {
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
  padding: 20px 24px;
  margin-bottom: 16px;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 10px;
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}

.card-title i {
  margin-right: 8px;
}

/* ========== 统计卡片 ========== */
.stat-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.stat-card {
  background: #fff;
  border-radius: 10px;
  padding: 18px 20px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
  text-align: center;
  transition: all 0.3s;
  cursor: pointer;
  border-top: 3px solid #d9d9d9;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.stat-card .stat-icon {
  font-size: 28px;
  margin-bottom: 6px;
}

.stat-card .stat-value {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.2;
}

.stat-card .stat-label {
  font-size: 13px;
  color: #888;
  margin-top: 2px;
}

.stat-card .stat-sub {
  font-size: 11px;
  color: #bbb;
  margin-top: 4px;
}

.stat-card.blue { border-top-color: var(--primary); }
.stat-card.blue .stat-icon { color: var(--primary); }
.stat-card.blue .stat-value { color: var(--primary); }

.stat-card.green { border-top-color: var(--success); }
.stat-card.green .stat-icon { color: var(--success); }
.stat-card.green .stat-value { color: var(--success); }

.stat-card.orange { border-top-color: var(--warning); }
.stat-card.orange .stat-icon { color: var(--warning); }
.stat-card.orange .stat-value { color: var(--warning); }

.stat-card.purple { border-top-color: var(--purple); }
.stat-card.purple .stat-icon { color: var(--purple); }
.stat-card.purple .stat-value { color: var(--purple); }

.stat-card.red { border-top-color: var(--danger); }
.stat-card.red .stat-icon { color: var(--danger); }
.stat-card.red .stat-value { color: var(--danger); }

/* ========== 成绩分析顶部统计指标条（极简图标 + 数字标签） ========== */
.sa-stat-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 24px;
  padding: 10px 14px;
  margin-bottom: 16px;
  background: var(--surface-2);
  border: 1px solid var(--border-soft);
  border-radius: 8px;
}
.sa-stat-item {
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  min-width: 0;
}
.sa-stat-item i {
  width: 16px;
  text-align: center;
  font-size: 13px;
}
.sa-stat-item .sa-stat-value {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.2;
}
.sa-stat-item .sa-stat-label {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.2;
}
/* 指标条的「第二行」：整行摘要（总分最高 / 年级与本班上线情况）。
   用 flex:0 0 100% 在同一个 .sa-stat-bar 内换行并整行占满 —— 等价于表格里的
   「合并单元格」；字体 / 底色 / 边框沿用容器，与第一行的格式风格完全一致。 */
.sa-stat-summary-full {
  flex: 0 0 100%;
  width: 100%;
  padding-top: 8px;
  border-top: 1px dashed var(--border-soft);
  font-size: 13px;
  line-height: 1.9;
  color: var(--text-primary);
  word-break: break-word;
}

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border: 1px solid #d9d9d9;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.25s;
  background: #fff;
  color: #333;
  text-decoration: none;
  line-height: 1.4;
}

.btn:hover {
  border-color: var(--primary-light);
  color: var(--primary);
}

.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-light);
  border-color: var(--primary-light);
  color: #fff;
}

.btn-success {
  background: var(--success);
  border-color: var(--success);
  color: #fff;
}

.btn-success:hover {
  background: var(--success-light);
  border-color: var(--success-light);
  color: #fff;
}

.btn-danger {
  background: var(--danger);
  border-color: var(--danger);
  color: #fff;
}

.btn-danger:hover {
  background: var(--danger-light);
  border-color: var(--danger-light);
  color: #fff;
}

.btn-sm {
  padding: 4px 12px;
  font-size: 12px;
}

/* ========== 文明分模块分页（更明显、功能完整） ========== */
.civ-pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 16px 0 8px 0;
  gap: 8px;
  flex-wrap: wrap;
  border-top: 1px solid #f0f0f0;
  margin-top: 12px;
}
.civ-pagination .btn {
  white-space: nowrap;
}
.civ-pagination .btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
.civ-page-info {
  padding: 0 10px;
  font-size: 14px;
  color: #666;
  font-weight: 500;
}
.civ-total {
  font-size: 12px;
  color: #999;
  margin-left: 2px;
}
.civ-goto {
  font-size: 12px;
  color: #666;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.civ-goto input {
  width: 44px;
  padding: 3px 4px;
  text-align: center;
  border: 1px solid #d9d9d9;
  border-radius: 4px;
  font-size: 12px;
}

/* ========== 表格 ========== */
.table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.data-table th {
  background: #fafafa;
  text-align: left;
  padding: 10px 12px;
  font-weight: 600;
  color: #555;
  border-bottom: 1px solid #f0f0f0;
  white-space: nowrap;
}

.data-table td {
  padding: 9px 12px;
  border-bottom: 1px solid #f5f5f5;
  vertical-align: middle;
}

.data-table tr:hover td {
  background: #fafafa;
}

/* ========== 标签 ========== */
.tag {
  display: inline-block;
  padding: 1px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
}

.tag-blue { background: var(--primary-50); color: var(--primary); }
.tag-green { background: var(--success-50); color: var(--success); }
.tag-orange { background: var(--warning-50); color: var(--warning-strong); }
.tag-red { background: var(--danger-50); color: var(--danger); }
.tag-gray { background: #f5f5f5; color: #999; }
.tag-purple { background: var(--purple-50); color: var(--purple); }

/* ========== 操作按钮 ========== */
.actions {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

.action-btn {
  background: none;
  border: none;
  padding: 4px 8px;
  cursor: pointer;
  font-size: 14px;
  border-radius: 4px;
  transition: all 0.2s;
  color: #888;
}

.action-btn:hover {
  background: #f0f0f0;
}

.action-btn.edit:hover { color: var(--primary); }
.action-btn.delete:hover { color: var(--danger); }

/* ========== 筛选栏 ========== */
.filter-bar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.filter-bar input,
.filter-bar select {
  padding: 6px 12px;
  border: 1px solid #d9d9d9;
  border-radius: 6px;
  font-size: 13px;
  background: #fff;
  outline: none;
  transition: border 0.2s;
}

.filter-bar input:focus,
.filter-bar select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--focus-shadow);
}

.filter-bar input {
  flex: 1;
  min-width: 140px;
}

/* ========== 表单 ========== */
.form-group {
  margin-bottom: 14px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: #333;
  margin-bottom: 4px;
}

.form-group .required {
  color: var(--danger);
  margin-right: 2px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid #d9d9d9;
  border-radius: 6px;
  font-size: 13px;
  font-family: inherit;
  transition: border 0.2s;
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--focus-shadow);
}

.form-group textarea {
  resize: vertical;
  min-height: 60px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

@media (max-width: 600px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* ========== 模态框 ========== */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-mask {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.45);
}

.modal-box {
  position: relative;
  background: #fff;
  border-radius: 12px;
  width: 90%;
  max-width: 600px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 8px 40px rgba(0,0,0,0.15);
  animation: modalIn 0.25s ease;
}

@keyframes modalIn {
  from { transform: scale(0.95) translateY(10px); opacity: 0; }
  to { transform: scale(1) translateY(0); opacity: 1; }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  border-bottom: 1px solid #f0f0f0;
  flex-shrink: 0;
}

.modal-header h3 {
  font-size: 17px;
  margin: 0;
}

.modal-close {
  font-size: 20px;
  color: #999;
  cursor: pointer;
  padding: 4px;
  transition: color 0.2s;
}

.modal-close:hover {
  color: #333;
}

.modal-body {
  padding: 20px 24px;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: 14px 24px;
  border-top: 1px solid #f0f0f0;
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  flex-shrink: 0;
}

/* ========== Toast ========== */
.toast {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  background: #333;
  color: #fff;
  padding: 10px 28px;
  border-radius: 8px;
  font-size: 14px;
  z-index: 2000;
  opacity: 0;
  transition: all 0.4s;
  pointer-events: none;
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.warning { background: var(--warning); }

/* ========== 全局忙态遮罩（保存 / 导出 / 归档等慢操作）==========
   与 system.html 的 #sysBusy 同一交互范式：转圈 + 说明 + 步骤 + 已用时计时。
   显示由脚本延迟 250ms 触发，快操作不会闪烁。 */
.busy-mask {
  position: fixed; inset: 0; z-index: 2100;
  display: none; align-items: center; justify-content: center;
  background: rgba(0, 0, 0, 0.38);
}
.busy-box {
  min-width: 260px; max-width: 82vw;
  background: var(--surface, #fff); color: var(--text, #333);
  border: 1px solid var(--border, #e8e8e8);
  border-radius: 12px; padding: 22px 26px; text-align: center;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.15);
  animation: modalIn 0.25s ease;
}
.busy-spin {
  width: 34px; height: 34px; margin: 0 auto 12px;
  border: 3px solid var(--border, #e8e8e8); border-top-color: var(--primary, #1890ff);
  border-radius: 50%; animation: busySpin 0.8s linear infinite;
}
.busy-msg { font-size: 15px; font-weight: 600; }
.busy-step { margin-top: 6px; font-size: 12px; color: var(--text-secondary, #666); }
.busy-timer { margin-top: 8px; font-size: 12px; color: var(--text-secondary, #666); font-variant-numeric: tabular-nums; }
@keyframes busySpin { to { transform: rotate(360deg); } }

/* ========== 空状态 ========== */
.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: #999;
}

.empty-state i {
  font-size: 48px;
  color: #d9d9d9;
  display: block;
  margin-bottom: 12px;
}

/* ========== 图表容器 ========== */
.chart-box {
  width: 100%;
  height: 300px;
}

/* ========== 座次表 ========== */
.seat-container {
  padding: 12px 0;
}

.teacher-desk {
  text-align: center;
  font-size: 16px;
  font-weight: 600;
  color: #555;
  padding: 10px;
  background: #f5f5f5;
  border-radius: 8px;
  margin-bottom: 16px;
  border: 2px dashed #d9d9d9;
}

.seat-grid {
  display: grid;
  gap: 8px;
  justify-content: center;
  margin: 0 auto;
}

.seat-cell {
  padding: 8px 4px;
  text-align: center;
  background: #fafafa;
  border: 2px solid #e8e8e8;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.25s;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.seat-cell:hover {
  border-color: var(--primary-light);
}

.seat-cell.selected {
  border-color: var(--primary);
  background: var(--primary-50);
  box-shadow: 0 0 0 3px var(--primary-50);
}

.seat-cell.empty {
  background: #f5f5f5;
  color: #ccc;
  border-style: dashed;
  font-size: 12px;
}

/* ========== 课程表 ========== */
.timetable {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.timetable th {
  background: #fafafa;
  text-align: center;
  padding: 10px 8px;
  font-weight: 600;
  border: 1px solid #f0f0f0;
}

.timetable td {
  text-align: center;
  padding: 10px 8px;
  border: 1px solid #f0f0f0;
  min-width: 80px;
}

.timetable-cell {
  cursor: pointer;
  transition: background 0.2s;
}

.timetable-cell:hover {
  background: #f5f5f5;
}

.timetable-cell .subject {
  font-weight: 500;
}

.timetable-cell .teacher {
  font-size: 11px;
  color: #888;
}

.timetable-cell.break {
  background: #fafafa;
  color: #999;
}

.timetable-cell.break .subject {
  font-weight: 400;
}

/* ========== 折叠卡片 ========== */
.collapse-card {
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
  margin-bottom: 14px;
  overflow: hidden;
}

.collapse-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  cursor: pointer;
  user-select: none;
  transition: background 0.2s;
}

.collapse-header:hover {
  background: #fafafa;
}

.collapse-title {
  font-size: 15px;
  font-weight: 600;
}

.collapse-header i.fa-chevron-down {
  transition: transform 0.3s;
  color: #999;
}

.collapse-card.open .collapse-header i.fa-chevron-down {
  transform: rotate(180deg);
}

.collapse-body {
  display: none;
  padding: 0 20px 20px;
}

.collapse-card.open .collapse-body {
  display: block;
}

/* ========== 快捷链接 ========== */
.quick-links {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 10px;
}

.quick-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 14px 10px;
  background: #fafafa;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.25s;
  text-align: center;
  border: 1px solid transparent;
}

.quick-link:hover {
  background: var(--primary-50);
  border-color: var(--primary);
  transform: translateY(-2px);
}

.quick-link i {
  font-size: 24px;
  color: var(--primary);
}

.quick-link span {
  font-size: 12px;
  color: #555;
}

/* ========== 数据管理 ========== */
.data-actions {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 14px;
}

.data-action-card {
  padding: 20px;
  text-align: center;
  border: 1px solid #f0f0f0;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.25s;
  background: #fafafa;
}

.data-action-card:hover {
  border-color: var(--primary);
  background: var(--primary-50);
  transform: translateY(-2px);
}

.data-action-card i {
  font-size: 36px;
  display: block;
  margin-bottom: 8px;
}

.data-action-card h4 {
  margin: 0 0 4px;
  font-size: 14px;
}

.data-action-card p {
  margin: 0;
  font-size: 12px;
  color: #999;
}

/* ========== 考勤状态按钮 ========== */
.status-selector {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

.status-btn {
  padding: 2px 10px;
  border: 1px solid #d9d9d9;
  border-radius: 4px;
  background: #fff;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
}

.status-btn:hover {
  border-color: var(--primary-light);
}

.status-btn.active {
  border-color: var(--primary);
  font-weight: 600;
}

.status-btn.present.active { background: var(--success-50); border-color: var(--success); color: var(--success); }
.status-btn.late.active { background: var(--warning-50); border-color: var(--warning-strong); color: var(--warning-strong); }
.status-btn.leave.active { background: var(--primary-50); border-color: var(--primary); color: var(--primary); }
.status-btn.absent.active { background: var(--danger-50); border-color: var(--danger); color: var(--danger); }

/* ========== 班级相册 ========== */
.album-categories {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.album-category {
  border: 1px solid #f0f0f0;
  border-radius: 10px;
  overflow: hidden;
  background: #fafafa;
}

.category-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  background: #ffffff;
  cursor: pointer;
  transition: background 0.2s;
  border-bottom: 1px solid #f0f0f0;
}

.category-header:hover {
  background: #f5f5f5;
}

.category-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 600;
}

.category-title i {
  font-size: 20px;
}

.category-count {
  font-weight: 400;
  color: #999;
  font-size: 13px;
}

.category-actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.category-body {
  display: none;
  padding: 16px;
  background: #ffffff;
}

.category-body.open {
  display: block;
}

.album-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.album-item {
  border: 1px solid #f0f0f0;
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.3s;
  background: #ffffff;
}

.album-item:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}

.album-item-preview {
  width: 100%;
  height: 150px;
  overflow: hidden;
  background: #f5f5f5;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.album-item-preview img,
.album-item-preview video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.album-item-preview video {
  background: #000;
}

.album-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #bfbfbf;
  width: 100%;
  height: 100%;
}

.album-placeholder i {
  font-size: 36px;
  margin-bottom: 8px;
}

.album-placeholder span {
  font-size: 12px;
}

.album-item-info {
  padding: 10px 12px;
}

.album-item-title {
  font-size: 14px;
  font-weight: 500;
  color: #333;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 4px;
}

.album-item-meta {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: #999;
  margin-bottom: 8px;
}

.album-item-actions {
  display: flex;
  gap: 4px;
  justify-content: flex-end;
  border-top: 1px solid #f5f5f5;
  padding-top: 8px;
}

/* ========== 小组排名 ========== */
.group-ranking {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.group-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 14px;
  background: #fafafa;
  border-radius: 8px;
  border-left: 4px solid #d9d9d9;
}

.group-item:first-child { border-left-color: var(--warning); }
.group-item:nth-child(2) { border-left-color: #d9d9d9; }
.group-item:nth-child(3) { border-left-color: #d4a574; }

.group-rank {
  font-size: 20px;
  font-weight: 700;
  color: #999;
  width: 32px;
  text-align: center;
}

.group-item:first-child .group-rank { color: var(--warning); }
.group-item:nth-child(2) .group-rank { color: #bfbfbf; }
.group-item:nth-child(3) .group-rank { color: #d4a574; }

.group-name {
  flex: 1;
}

.group-score {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
}

/* ========== 登录页面 ========== */
.login-page {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: linear-gradient(135deg, var(--primary-50) 0%, var(--primary-200) 50%, var(--primary-100) 100%);
}

.login-container {
  width: 100%;
  max-width: 420px;
  padding: 20px;
}

.login-box {
  background: #ffffff;
  border-radius: 16px;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.12);
  padding: 40px 36px 32px;
}

.login-header {
  text-align: center;
  margin-bottom: 32px;
}

.login-header i {
  font-size: 48px;
  color: var(--primary);
  display: block;
  margin-bottom: 12px;
}

.login-header h1 {
  font-size: 22px;
  color: var(--text-primary);
  margin: 0 0 4px 0;
  font-weight: 700;
}

.login-header p {
  color: #888;
  font-size: 14px;
  margin: 0;
}

.login-form .form-group {
  margin-bottom: 18px;
}

.login-form .form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: #333;
  margin-bottom: 5px;
}

.login-form .form-group label i {
  margin-right: 6px;
  color: var(--primary);
  width: 16px;
}

.login-form .form-group input {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid #e8e8e8;
  border-radius: 8px;
  font-size: 14px;
  transition: all 0.3s;
  box-sizing: border-box;
}

.login-form .form-group input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--focus-shadow);
  outline: none;
}

.login-error {
  color: var(--danger);
  font-size: 13px;
  min-height: 24px;
  margin-bottom: 12px;
  text-align: center;
}

.login-btn {
  width: 100%;
  padding: 12px;
  font-size: 16px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border: none;
  color: #fff;
  cursor: pointer;
  transition: all 0.3s;
  font-weight: 600;
}

.login-btn:hover {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(24, 144, 255, 0.35);
}

.login-footer {
  text-align: center;
  margin-top: 20px;
  color: #bbb;
  font-size: 12px;
  border-top: 1px solid #f0f0f0;
  padding-top: 16px;
}

#loginPage {
  display: flex;
}

#appContainer {
  display: none;
}

/* ========== 网格布局 ========== */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
}

@media (max-width: 1100px) {
  .grid-3 {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .grid-2 {
    grid-template-columns: 1fr;
  }
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

/* ========== 教师版新增模块样式 ========== */

/* 通用：日历中的事件彩色标签（作业/辅导/谈心/自定义） */
.ev-hw      { background: var(--primary-50); color: var(--primary); }
.ev-tut     { background: var(--success-50); color: var(--success); }
.ev-mental  { background: var(--purple-50); color: var(--purple); }
.ev-custom  { background: var(--warning-50); color: var(--warning-strong); }

/* 近期待办时间线 */
.timeline { display: flex; flex-direction: column; gap: 8px; }
.tl-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  background: #fafbfc;
  border: 1px solid #eef1f6;
  border-radius: 8px;
}
.tl-date { flex: 0 0 auto; font-size: 12px; color: #888; min-width: 78px; }
.tl-tag {
  flex: 0 0 auto;
  font-size: 11px;
  padding: 1px 8px;
  border-radius: 10px;
  font-weight: 600;
  white-space: nowrap;
}
.tl-title { flex: 1 1 auto; font-size: 13px; color: #333; }

/* 成绩深度分析：薄弱学科提示 */
.weak-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  background: #fff6f6;
  border: 1px solid #ffe0e0;
  border-radius: 8px;
  margin-bottom: 8px;
  font-size: 13px;
}

/* 班级模板套用卡片 */
.tpl-card {
  border: 1px solid #eef1f6;
  border-radius: 10px;
  padding: 14px 16px;
  margin-bottom: 12px;
  background: #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,0.03);
}
.tpl-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 10px;
}
.tpl-opts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: #555;
}
.tpl-opts label { display: inline-flex; align-items: center; gap: 4px; cursor: pointer; }

/* ========== 文档管理富文本编辑器：确保长文本不截断、可滚动 ========== */
#quillEditorContainer,
#quillEditorContainer .ql-container {
  height: 500px !important;
  min-height: 300px !important;
}
#quillEditorContainer .ql-editor {
  min-height: 100%;
  overflow-y: auto !important;
  max-height: none !important;
  white-space: pre-wrap !important;
  word-break: break-word !important;
  /* 确保滚动条可见，避免用户误以为内容被截断 */
  scrollbar-width: thin;
  scrollbar-color: #bfbfbf #f5f5f5;
}
#quillEditorContainer .ql-editor::-webkit-scrollbar {
  width: 8px;
}
#quillEditorContainer .ql-editor::-webkit-scrollbar-thumb {
  background: #bfbfbf;
  border-radius: 4px;
}
#quillEditorContainer .ql-editor p,
#quillEditorContainer .ql-editor div {
  display: block !important;
  overflow: visible !important;
  text-overflow: clip !important;
  -webkit-line-clamp: none !important;
  -webkit-box-orient: unset !important;
}
/* 文档编辑弹窗需要更高空间 */
#modal:has(#quillEditorContainer) .modal-box {
  max-height: 92vh !important;
}
#modal:has(#quillEditorContainer) .modal-body {
  max-height: 78vh !important;
}

/* ========== 远程媒体（图片/视频/iframe 链接）显示约束 ==========
   编辑态：.ql-editor 已有 img/video max-width:100%；这里补 iframe。
   展示态：.doc-rich-content（文档管理查看）/ .portal-announce-detail-content（前台公告）
   直接渲染 innerHTML，媒体默认无最大宽度约束，需显式限制，避免溢出。 */
.ql-editor iframe.ql-remotevideo,
.doc-rich-content img, .doc-rich-content video, .doc-rich-content iframe,
.portal-announce-detail-content img, .portal-announce-detail-content video, .portal-announce-detail-content iframe {
  max-width: 100% !important;
  height: auto !important;
  border: 0;
}
.ql-editor iframe.ql-remotevideo,
.doc-rich-content iframe, .portal-announce-detail-content iframe {
  aspect-ratio: 16 / 9;
  width: 100%;
  display: block;
}
/* 用户手动调过尺寸的元素，max-width 只作兜底上限，不覆盖显式宽度 */
.doc-rich-content img[style*="width"], .doc-rich-content video[style*="width"], .doc-rich-content iframe[style*="width"],
.portal-announce-detail-content img[style*="width"], .portal-announce-detail-content video[style*="width"], .portal-announce-detail-content iframe[style*="width"] {
  max-width: 100% !important;
}

/* ========== 文字环绕（图文混排） ==========
   编辑端「显示大小与环绕」面板给媒体加 float:left/right 后，后续段落文字会自动绕其两侧排版。
   ① 浮动媒体限制最大宽度，保证正文有足够空间（用户设的宽度 <70% 时以其为准）；
   ② 展示容器补 clearfix，避免末尾浮动媒体溢出容器高度。
   ⚠ 以下规则**只匹配带 float 的元素**（本功能新产生），不改变任何既有内容的排版。 */
.ql-editor img[style*="float"], .ql-editor video[style*="float"], .ql-editor iframe[style*="float"],
.doc-rich-content img[style*="float"], .doc-rich-content video[style*="float"], .doc-rich-content iframe[style*="float"],
.portal-announce-detail-content img[style*="float"], .portal-announce-detail-content video[style*="float"], .portal-announce-detail-content iframe[style*="float"],
.portal-dyn-body img[style*="float"], .portal-dyn-body video[style*="float"], .portal-dyn-body iframe[style*="float"],
.mt-rec-body img[style*="float"], .mt-rec-body video[style*="float"], .mt-rec-body iframe[style*="float"],
.mr-rec-body img[style*="float"], .mr-rec-body video[style*="float"], .mr-rec-body iframe[style*="float"],
.tw-body img[style*="float"], .tw-body video[style*="float"], .tw-body iframe[style*="float"] {
  max-width: 70% !important;
}
.doc-rich-content::after,
.portal-announce-detail-content::after,
.portal-dyn-body::after,
.mt-rec-body::after,
.mr-rec-body::after,
.tw-body::after {
  content: "";
  display: block;
  clear: both;
}

/* ========== 门户首页（前台 / 学生视角 A 方案） ========== */
.visitor-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  color: var(--primary);
  background: var(--primary-50);
  border: 1px solid var(--primary-100);
  border-radius: 20px;
  padding: 3px 12px;
  margin-left: 12px;
}

.portal-banner {
  background: linear-gradient(120deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: 12px;
  padding: 28px 32px;
  color: #fff;
  box-shadow: 0 6px 18px rgba(24, 144, 255, 0.25);
  margin-bottom: 22px;
}
.portal-banner-main { display: flex; flex-direction: column; gap: 8px; }
.portal-banner-class { font-size: 28px; font-weight: 800; letter-spacing: 1px; }
.portal-banner-motto { font-size: 16px; opacity: 0.95; font-style: italic; }
.portal-banner-meta { display: flex; gap: 22px; flex-wrap: wrap; margin-top: 6px; font-size: 14px; opacity: 0.92; }
.portal-banner-meta span { display: inline-flex; align-items: center; gap: 6px; }

/* 门户首页"教师寄语（置顶）"卡片 */
.portal-words { display: flex; flex-direction: column; gap: 12px; margin-bottom: 26px; }
.portal-word-card {
  background: #fffaf0;
  border: 1px solid #ffe7ba;
  border-left: 4px solid #fa8c16;
  border-radius: 10px;
  padding: 14px 16px;
}
.portal-word-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 6px; }
.portal-word-title { font-size: 15px; font-weight: 700; color: #ad6800; }
.portal-word-author { font-size: 12px; color: #bfbfbf; }
.portal-word-body { font-size: 14px; line-height: 1.8; color: #614700; word-break: break-word; }

.portal-section-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 4px 0 14px;
  padding-left: 10px;
  border-left: 4px solid var(--primary);
}

/* 门户首页"百日冲刺"警示条 */
.portal-sprint {
  display: flex;
  align-items: center;
  gap: 14px;
  background: linear-gradient(120deg, #fff1f0 0%, #fff7e6 100%);
  border: 1px solid #ffccc7;
  border-left: 5px solid #ff4d4f;
  border-radius: 10px;
  padding: 14px 18px;
  margin-bottom: 22px;
}
.portal-sprint > i {
  font-size: 26px;
  color: #ff4d4f;
  flex-shrink: 0;
}
.portal-sprint-text { font-size: 15px; color: #ad2102; line-height: 1.5; }
.portal-sprint-text strong { font-size: 18px; color: #cf1322; }

.portal-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 26px;
}
.portal-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: #fff;
  border: 1px solid #eef0f4;
  border-radius: 10px;
  padding: 18px 16px;
  cursor: pointer;
  transition: transform 0.18s, box-shadow 0.18s, border-color 0.18s;
}
.portal-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(24, 144, 255, 0.18);
  border-color: var(--primary-100);
}
.portal-card:active { transform: translateY(-1px); }
.portal-card-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-50);
  color: var(--primary);
  font-size: 22px;
}
.portal-card-body { flex: 1; min-width: 0; }
.portal-card-title { font-size: 15px; font-weight: 700; color: var(--text-primary); }
.portal-card-desc { font-size: 12px; color: #8c8c8c; margin-top: 3px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.portal-card-arrow { color: #bfbfbf; font-size: 14px; }

.portal-announce { padding: 8px 18px; }
.portal-announce-empty { display: flex; align-items: center; gap: 10px; padding: 14px 0; color: #999; font-size: 14px; }
.portal-announce-empty i { color: var(--primary); }

/* 班级公告：单栏连续列表（序号连续，符合"一栏往下看"直觉） */
.portal-announce-list {
  display: flex;
  flex-direction: column;
  border: 1px solid #f0f0f0;
  border-radius: 8px;
  overflow: hidden;
}
.portal-announce-list-header,
.portal-announce-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 8px;
  font-size: 14px;
}
.portal-announce-list-header {
  font-weight: 600;
  color: var(--text-primary);
  background: #f7f8fa;
  border-bottom: 2px solid #e8e8e8;
}
.portal-announce-item {
  border-bottom: 1px dashed #f0f0f0;
  cursor: pointer;
  transition: background 0.15s;
}
.portal-announce-item:last-child { border-bottom: none; }
.portal-announce-item:hover { background: #f0f7ff; }
.portal-announce-h-no, .portal-announce-item-no {
  flex: 0 0 36px;
  text-align: center;
  white-space: nowrap;
}
.portal-announce-item-no {
  color: var(--primary);
  font-weight: 600;
}
.portal-announce-h-time, .portal-announce-item-time {
  flex: 0 0 90px;
  white-space: nowrap;
  font-size: 13px;
}
.portal-announce-item-time { color: #999; }
.portal-announce-h-title, .portal-announce-item-right {
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.portal-announce-item-right {
  color: var(--primary);
  font-weight: 500;
}

/* 首页"今日速览"高频速查卡片 */
.portal-quick {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 26px;
}
.portal-quick-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: #fff;
  border: 1px solid #eef0f4;
  border-left: 4px solid var(--primary);
  border-radius: 10px;
  padding: 16px 18px;
  transition: transform 0.18s, box-shadow 0.18s;
}
.portal-quick-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(24, 144, 255, 0.14);
}
.pqc-body { flex: 1; min-width: 0; }
.pqc-title { font-size: 14px; font-weight: 700; color: var(--text-primary); }
.pqc-text { font-size: 13px; color: #8c8c8c; margin-top: 4px; line-height: 1.5; word-break: break-word; }
@media (max-width: 768px) {
  .portal-quick { grid-template-columns: 1fr; }
}
.portal-announce-detail-content { max-height: 60vh; overflow-y: auto; }

/* 公告分页 */
.portal-announce-pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid #f0f0f0;
  font-size: 13px;
}
.portal-announce-pagination .btn,
.portal-announce-pagination button {
  display: inline-flex !important;
  align-items: center;
  gap: 4px;
  padding: 6px 12px !important;
  border: 1px solid #d9d9d9 !important;
  border-radius: 4px !important;
  background: #fff !important;
  color: var(--text-primary) !important;
  cursor: pointer;
  transition: all 0.15s;
  visibility: visible !important;
  opacity: 1 !important;
}
.portal-announce-pagination .btn:hover:not(:disabled),
.portal-announce-pagination button:hover:not(:disabled) {
  border-color: var(--primary) !important;
  color: var(--primary) !important;
  background: #f0f7ff !important;
}
.portal-announce-pagination .btn:disabled,
.portal-announce-pagination button:disabled {
  cursor: not-allowed !important;
  background: #f5f5f5 !important;
  border-color: #e8e8e8 !important;
  color: #bfbfbf !important;
}
.portal-page-info { color: var(--text-primary); font-weight: 600; padding: 0 4px; }
.portal-total { color: #999; }
.portal-goto { color: #999; }
.portal-goto input {
  width: 46px;
  padding: 4px 6px;
  border: 1px solid #d9d9d9;
  border-radius: 4px;
  text-align: center;
  font-size: 13px;
}


.portal-footer { text-align: center; color: #bfbfbf; font-size: 12px; margin-top: 26px; }

@media (max-width: 1100px) {
  .portal-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .portal-grid { grid-template-columns: 1fr; }
}

/* ========== 个人中心 / 通知中心 / 投票 / 同学录 / 教师寄语（前台只读端新模块） ========== */
/* 侧栏红点 */
.nav-badge {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 18px; height: 18px; padding: 0 5px; margin-left: 6px;
  background: #ff4d4f; color: #fff; border-radius: 9px; font-size: 11px; font-weight: 700;
}
/* 个人中心 */
.me-info-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; padding: 16px; }
.me-info-item { background: #f7f8fa; border: 1px solid #eef0f4; border-radius: 8px; padding: 10px 12px; }
.me-info-label { font-size: 12px; color: #8c8c8c; margin-bottom: 4px; }
.me-info-value { font-size: 15px; font-weight: 600; color: var(--text-primary, #1f1f1f); word-break: break-word; }
.me-goal-subs { display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px; padding: 16px; }
.me-goal-sub { background: #f0f7ff; border-radius: 8px; padding: 10px; text-align: center; }
.me-goal-sub span { display: block; font-size: 12px; color: #8c8c8c; margin-bottom: 4px; }
.me-goal-sub strong { font-size: 18px; color: var(--primary, #1890ff); }
.me-goal-foot { padding: 0 16px 16px; }
.me-goal-total { font-size: 15px; }
.me-goal-school, .me-goal-wish { font-size: 13px; color: #595959; margin-top: 6px; }
.me-civ-list { padding: 8px 16px 16px; }
.me-civ-row { display: flex; align-items: center; gap: 10px; padding: 8px 0; border-bottom: 1px dashed #f0f0f0; font-size: 14px; }
.me-civ-date { color: #999; font-size: 13px; flex: 0 0 96px; }
.me-civ-item { flex: 1; }
.me-civ-add { color: #52c41a; font-weight: 700; flex: 0 0 48px; text-align: right; }
.me-civ-sub { color: #ff4d4f; font-weight: 700; flex: 0 0 48px; text-align: right; }
.me-civ-more { text-align: center; color: #bfbfbf; font-size: 12px; padding-top: 8px; }
.me-att-stat { display: flex; gap: 10px; flex-wrap: wrap; padding: 16px; }
.me-att-chip { flex: 1; min-width: 70px; background: #f7f8fa; border-radius: 8px; padding: 10px; text-align: center; }
.me-att-chip span { display: block; font-size: 12px; color: #8c8c8c; }
.me-att-chip strong { font-size: 20px; color: var(--text-primary, #1f1f1f); }
.me-att-list { padding: 0 16px 16px; }
.me-att-row { display: flex; gap: 10px; padding: 6px 0; border-bottom: 1px dashed #f0f0f0; font-size: 14px; }
.me-att-remark { color: #8c8c8c; font-size: 12px; }
.me-seat { padding: 16px; font-size: 16px; }
.me-seat strong { color: var(--primary, #1890ff); font-size: 20px; padding: 0 2px; }
@media (max-width: 768px) { .me-info-grid { grid-template-columns: repeat(2, 1fr); } .me-goal-subs { grid-template-columns: repeat(3, 1fr); } }

/* 通知中心 */
.notif-list { padding: 8px 0; }
.notif-item { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-bottom: 1px solid #f5f5f5; cursor: pointer; transition: background 0.15s; }
.notif-item:hover { background: #f7faff; }
.notif-item.unread { background: #f0f7ff; }
.notif-dot { width: 9px; height: 9px; border-radius: 50%; background: #1890ff; flex-shrink: 0; }
.notif-dot.read { background: #d9d9d9; }
.notif-tag { flex-shrink: 0; font-size: 12px; padding: 2px 8px; border-radius: 4px; color: #fff; }
.notif-tag-info { background: #1890ff; }
.notif-tag-ok { background: #52c41a; }
.notif-tag-danger { background: #ff4d4f; }
.notif-tag-warn { background: #fa8c16; }
.notif-main { flex: 1; min-width: 0; }
.notif-title { font-size: 14px; color: var(--text-primary, #1f1f1f); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.notif-time { font-size: 12px; color: #bfbfbf; }
.notif-personal { flex-shrink: 0; font-size: 11px; color: #fa8c16; border: 1px solid #ffd591; border-radius: 4px; padding: 1px 6px; }

/* 投票问卷 */
.poll-card { margin-bottom: 16px; }
.poll-head { display: flex; align-items: center; justify-content: space-between; }
.poll-title { font-size: 16px; font-weight: 700; color: var(--text-primary, #1f1f1f); }
.poll-status { font-size: 12px; padding: 2px 10px; border-radius: 10px; }
.poll-status.open { background: #e6f7ff; color: #1890ff; }
.poll-status.closed { background: #f5f5f5; color: #999; }
.poll-desc { color: #595959; font-size: 13px; margin: 8px 0; line-height: 1.6; }
.poll-deadline { font-size: 12px; color: #bfbfbf; margin-bottom: 8px; }
.poll-opts { display: flex; flex-direction: column; gap: 10px; }
.poll-opt { border: 1px solid #e8e8e8; border-radius: 8px; padding: 10px 12px; cursor: pointer; transition: all 0.15s; }
.poll-opt:hover { border-color: var(--primary, #1890ff); }
.poll-opt.mine { border-color: var(--primary, #1890ff); background: #f0f7ff; }
.poll-opt-top { display: flex; justify-content: space-between; font-size: 14px; margin-bottom: 6px; }
.poll-opt-num { color: #8c8c8c; font-size: 13px; }
.poll-bar { height: 8px; background: #f0f0f0; border-radius: 4px; overflow: hidden; }
.poll-bar-fill { height: 100%; background: var(--primary, #1890ff); border-radius: 4px; transition: width 0.4s; }
.poll-foot { font-size: 12px; color: #bfbfbf; margin-top: 10px; }

/* 同学录 */
.classmates-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; }
.classmate-card { background: #fff; border: 1px solid #eef0f4; border-radius: 10px; padding: 16px; text-align: center; transition: box-shadow 0.18s, transform 0.18s; }
.classmate-card:hover { box-shadow: 0 6px 18px rgba(24,144,255,0.14); transform: translateY(-2px); }
.classmate-avatar { width: 56px; height: 56px; border-radius: 50%; background: linear-gradient(120deg, var(--primary,#1890ff), #69c0ff); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 18px; font-weight: 700; margin: 0 auto 10px; }
.classmate-name { font-size: 16px; font-weight: 700; color: var(--text-primary,#1f1f1f); }
.classmate-meta { font-size: 12px; color: #8c8c8c; margin: 4px 0 12px; }
.classmate-rows { text-align: left; display: flex; flex-direction: column; gap: 6px; }
.classmate-row { display: flex; align-items: center; gap: 8px; font-size: 13px; color: #595959; }
.classmate-row i { color: var(--primary,#1890ff); width: 16px; }

/* 教师寄语 */
.tw-list { display: flex; flex-direction: column; gap: 16px; }
.tw-card { background: #fff; border: 1px solid #eef0f4; border-left: 4px solid var(--primary,#1890ff); border-radius: 10px; padding: 16px; }
.tw-card.pinned { background: #f0f7ff; border-left-color: #fa8c16; }
.tw-head { display: flex; align-items: center; justify-content: space-between; }
.tw-title { font-size: 16px; font-weight: 700; color: var(--text-primary,#1f1f1f); }
.tw-pin { font-size: 12px; color: #fa8c16; }
.tw-target { font-size: 12px; color: #fa8c16; margin: 4px 0; }
.tw-body { font-size: 14px; line-height: 1.8; color: #333; margin: 8px 0; word-break: break-word; }
.tw-foot { display: flex; justify-content: space-between; font-size: 12px; color: #bfbfbf; }

/* 投票管理弹窗：选项行 */
.pa-opt-row { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }

/* ========== 紧凑居中页面容器（考勤/课程表等页面复用，避免每页写内联样式） ========== */
/* 用法：在页面最外层元素上加 class="page-compact"（若是 .card 则写 class="card page-compact"）。
   定义在本文件末尾，特异性与 .card 相同但后出现，故其 padding 会覆盖 .card 默认 padding。 */
.page-compact {
  max-width: 1100px;
  margin: 0 auto;
  padding: 14px 16px;
  box-sizing: border-box;
}

/* ========== 打印样式（管理端 manage.html 用于打印列表内容，不含"操作"列） ========== */
/* 用法：
   - 表格"操作"列的 <th> 和对应 <td> 加 class="op-col"；
   - 不需要出现在打印纸上的按钮/筛选器/分页/空状态... 加 class="no-print"；
   - 行容器/卡片可加 class="printable-card" 标识（可选）；
   - 调用 window.printSection(title) 即可。
*/
.print-only { display: none !important; }
@media print {
  /* 整体页面：去掉边距/背景/深色 chrome */
  html, body { background: #fff !important; color: #000 !important; }
  body { font-size: 12px; }
  /* 侧栏、顶部 chrome、模态框、toast 全部不参与打印 */
  .sidebar, .topbar, .main-header-bar, .nav-menu,
  .modal-mask, .modal, .toast, .page-compact { display: none !important; }
  /* 主区域全宽铺满 */
  .main-content, .container, .content-area, #mainContainer { padding: 0 !important; margin: 0 !important; max-width: 100% !important; }

  /* 标识"不打印"的元素 */
  .no-print { display: none !important; }
  /* 操作列（含 th/td）：隐藏 */
  .op-col { display: none !important; }

  /* 默认所有按钮/筛选器/分页/上传区都不打印（表格才是主角） */
  .card-header > div > button,
  .card-header > div > .btn,
  .card-header button,
  .card-header select,
  .card-header input,
  .pagination,
  .upload-area, .upload-zone, .drop-zone, .album-upload,
  .empty-state { display: none !important; }

  /* 打印页眉 */
  .print-header {
    display: block !important;
    text-align: center;
    font-size: 18px;
    font-weight: 700;
    margin: 0 0 6px 0;
    color: #000;
  }
  .print-subheader {
    display: block !important;
    text-align: center;
    font-size: 12px;
    color: #555;
    margin: 0 0 14px 0;
    border-bottom: 1px solid #999;
    padding-bottom: 8px;
  }

  /* 表格样式：黑白实线、紧凑 */
  .data-table {
    border-collapse: collapse !important;
    width: 100% !important;
    font-size: 12px;
  }
  .data-table th, .data-table td {
    border: 1px solid #888 !important;
    padding: 5px 6px !important;
    color: #000 !important;
    background: transparent !important;
  }
  .data-table th { background: #f0f0f0 !important; font-weight: 700; }

  /* 卡片去掉阴影/边框/底色，但保留 padding */
  .card {
    background: transparent !important;
    box-shadow: none !important;
    border: none !important;
    margin: 0 !important;
    padding: 0 !important;
  }
  .card-header { border-bottom: 1px solid #ccc !important; padding-bottom: 6px !important; margin-bottom: 8px !important; }
  .card-title { color: #000 !important; }

  /* 防止分页截断行 */
  table { page-break-inside: auto; }
  tr { page-break-inside: avoid; page-break-after: auto; }

  /* 标记的待打印卡片保留 */
  .printable-card { display: block !important; }

  /* 避免出现小尺寸溢出横滚 */
  .table-wrapper { overflow: visible !important; }

  /* 打印时 grid 容器保持双/三栏并列，紧凑间隙，避免三张表垂直堆成长打印页 */
  .grid-2, .grid-3 {
    display: grid !important;
    gap: 8px !important;
    page-break-inside: avoid;
  }
  .grid-2 { grid-template-columns: 1fr 1fr !important; }
  .grid-3 { grid-template-columns: 1fr 1fr 1fr !important; }
  @media (max-width: 720px) {
    .grid-3 { grid-template-columns: 1fr 1fr !important; }
  }
}
@media screen {
  .print-header, .print-subheader { display: none; }
}

/* ========== 移动端响应式（≤768px 平板/手机） ==========
   仅改布局与栅格，不改动模块语义/HTML 结构；不影响后台 manage.html 任何功能。
   打印 @media print 独立生效，互不干扰。
   策略：≤768 视为窄屏，侧栏降级为左侧抽屉（默认隐藏在屏幕外），主内容始终铺满全宽；
         顶部 topbar 显示汉堡按钮，点击展开侧栏；点遮罩或再次点击按钮收起。 */

/* 桌面端默认隐藏汉堡按钮与遮罩 */
.sidebar-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  background: transparent;
  color: var(--primary);
  font-size: 18px;
  border-radius: 6px;
  cursor: pointer;
  flex-shrink: 0;
  padding: 0;
  transition: background 0.2s;
}
.sidebar-toggle:hover { background: rgba(24,144,255,0.08); }
.sidebar-toggle:focus { outline: none; box-shadow: 0 0 0 2px rgba(24,144,255,0.2); }

.sidebar-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 998;
  -webkit-tap-highlight-color: transparent;
}

@media (max-width: 768px) {
  /* 整体布局：上下堆叠时主内容优先 */
  .app { flex-direction: column; min-height: 100vh; }

  /* 侧栏降级为左侧抽屉（默认收起，贴在屏幕外） */
  .sidebar {
    position: fixed !important;
    left: 0;
    top: 0;
    width: 250px;
    height: 100vh;
    min-height: 100vh !important;
    transform: translateX(-100%);
    transition: transform 0.28s ease;
    z-index: 999;
    box-shadow: none;
    overflow-y: auto;
    flex-shrink: 0;
  }
  body.sidebar-open .sidebar {
    transform: translateX(0);
    box-shadow: 4px 0 24px rgba(0,0,0,0.25);
  }
  body.sidebar-open .sidebar-backdrop { display: block; }

  /* 抽屉内回归纵向布局：分组标题、图标+文字菜单项都正常显示 */
  .sidebar-header {
    position: static !important;
    justify-content: flex-start;
    padding: 14px 18px;
  }
  .sidebar-header span { display: inline; }
  .teacher-photo-section { padding: 14px; }
  .nav-menu {
    display: block !important;
    overflow-y: visible;
    overflow-x: visible;
    padding: 8px 0 20px !important;
  }
  .nav-group { display: block; margin-bottom: 4px; }
  .nav-title {
    display: flex !important;
    padding: 10px 20px 6px;
  }
  .nav-menu .nav-item {
    flex: 0 0 auto;
    padding: 10px 20px 10px 24px;
    border-radius: 0;
    margin-right: 0;
    border-left: 3px solid transparent;
    justify-content: flex-start;
    white-space: nowrap;
  }
  .nav-menu .nav-item i { font-size: 15px; }
  .nav-menu .nav-item span { display: inline; }

  /* 顶部 topbar：显示汉堡按钮 */
  .sidebar-toggle { display: inline-flex; }
  .topbar {
    padding: 10px 14px;
    flex-wrap: wrap;
    gap: 6px;
  }
  .topbar .class-info {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: baseline;
    gap: 6px;
  }
  .topbar .class-info h2 {
    font-size: 15px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex-shrink: 0;
  }
  .topbar .class-info span {
    font-size: 11px;
    margin-left: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
  }

  /* 班级切换栏缩小 */
  .class-switch-bar {
    padding: 6px 14px !important;
    flex-wrap: wrap;
    gap: 8px;
  }
  .class-switch-bar #classSelector {
    min-width: 0;
    width: auto;
    flex: 1;
    max-width: none;
  }

  /* 主内容全宽、收紧内边距 */
  .content { padding: 10px 12px 24px !important; }

  /* 栅格退化 */
  .grid-2, .grid-3 {
    grid-template-columns: 1fr !important;
    gap: 12px !important;
  }

  /* 表格横向滚动 */
  .table-wrapper { overflow-x: auto !important; }
  .data-table { min-width: 520px; }

  /* 卡片收紧 */
  .card { padding: 12px 12px !important; margin-bottom: 12px !important; }
  .page-compact { padding: 10px 12px !important; }

  .stat-cards { grid-template-columns: 1fr 1fr !important; }
  .data-actions { grid-template-columns: 1fr 1fr !important; }
  .quick-links { grid-template-columns: repeat(auto-fill, minmax(90px, 1fr)) !important; }
  .album-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)) !important; }

  .card-header { flex-wrap: wrap; gap: 8px; }
  .card-title { font-size: 15px; }
}

/* 超小屏（≤480px）进一步收敛间距 */
@media (max-width: 480px) {
  .sidebar { width: 240px; }
  .data-table { min-width: 460px; font-size: 12px; }
  .btn, .btn-sm { padding: 5px 9px; font-size: 12px; }
  .seat-grid { gap: 4px; }
  .seat-cell { font-size: 11px; padding: 4px 2px; min-height: 32px; }
}

/* =====================================================================
   AI 智能助手模块（离线轻智能）
   ===================================================================== */
.ai-badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 12px; color: var(--success);
  background: var(--success-50); border: 1px solid var(--success);
  border-radius: 20px; padding: 2px 10px; font-weight: 600;
}
.ai-tabs {
  display: flex; flex-wrap: wrap; gap: 8px; margin: 6px 0 14px;
}
.ai-tab {
  border: 1px solid var(--border); background: var(--surface-2);
  color: var(--text-secondary); border-radius: 18px;
  padding: 6px 14px; font-size: 13px; cursor: pointer; transition: all 0.18s;
}
.ai-tab:hover { border-color: var(--primary); color: var(--primary); }
.ai-tab.active {
  background: var(--primary); border-color: var(--primary); color: var(--on-primary);
  box-shadow: 0 2px 8px rgba(0,0,0,0.12);
}
.ai-panel { min-height: 200px; }
.ai-tool { padding: 4px 0; }
.ai-tool-head {
  font-size: 16px; font-weight: 700; color: var(--text-primary);
  display: flex; align-items: center; gap: 8px; margin-bottom: 6px;
}
.ai-tool-desc { font-size: 13px; color: var(--text-secondary); margin: 0 0 12px; line-height: 1.6; }
.ai-row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-bottom: 12px; }
.ai-row label { font-size: 13px; color: var(--text-secondary); }
.ai-row .form-control { max-width: 220px; }
.ai-out { margin-top: 6px; }
.ai-out-actions { margin-top: 10px; }
.ai-comment-text {
  background: var(--surface-2); border: 1px solid var(--border);
  border-left: 4px solid var(--primary); border-radius: 8px;
  padding: 14px 16px; font-size: 14px; line-height: 1.8; color: var(--text-primary);
  white-space: normal;
}
.ai-grp-card {
  border: 1px solid var(--border); border-radius: 10px;
  padding: 12px 14px; margin-bottom: 12px; background: var(--surface);
}
.ai-grp-title { font-size: 14px; font-weight: 700; margin-bottom: 4px; }
.ai-grp-desc { font-size: 12px; color: var(--text-tertiary); margin-bottom: 8px; }
.ai-grp-body { display: flex; flex-wrap: wrap; gap: 6px; }
.ai-grp-subj { width: 100%; font-size: 13px; color: var(--text-primary); margin-top: 4px; }
.ai-chip {
  display: inline-block; background: var(--primary-50); color: var(--primary);
  border: 1px solid var(--primary-100); border-radius: 14px;
  padding: 3px 10px; font-size: 12px;
}
.ai-meeting-list { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.ai-meeting-card {
  border: 1px solid var(--border); border-radius: 10px;
  padding: 12px 14px; background: var(--surface);
}
.ai-meeting-title { font-size: 14px; font-weight: 700; color: var(--text-primary); display: flex; align-items: center; gap: 6px; margin-bottom: 6px; }
.ai-meeting-desc { font-size: 13px; color: var(--text-secondary); line-height: 1.6; margin-bottom: 8px; }
.ai-meeting-agenda { font-size: 12px; color: var(--text-tertiary); line-height: 1.6; }

@media (max-width: 768px) {
  .ai-meeting-list { grid-template-columns: 1fr; }
}

/* =====================================================================
   全局命令面板（Ctrl / ⌘ + K）
   ===================================================================== */
.cmdk-overlay {
  position: fixed; inset: 0; z-index: 2000;
  background: rgba(0,0,0,0.45);
  display: none; align-items: flex-start; justify-content: center;
  padding-top: 12vh;
}
.cmdk-box {
  width: min(560px, 92vw);
  background: var(--surface); color: var(--text-primary);
  border: 1px solid var(--border); border-radius: 14px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  overflow: hidden;
}
.cmdk-input-row {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 14px; border-bottom: 1px solid var(--border);
}
.cmdk-input-row .fa-search { color: var(--text-tertiary); }
.cmdk-input {
  flex: 1; border: none; outline: none; background: transparent;
  font-size: 15px; color: var(--text-primary);
}
.cmdk-kbd {
  font-size: 11px; color: var(--text-tertiary);
  border: 1px solid var(--border); border-radius: 5px; padding: 1px 6px;
}
.cmdk-list { max-height: 50vh; overflow-y: auto; padding: 6px; }
.cmdk-group {
  font-size: 11px; color: var(--text-tertiary);
  padding: 8px 10px 4px; font-weight: 700; letter-spacing: 0.04em;
}
.cmdk-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 10px; border-radius: 8px; cursor: pointer;
}
.cmdk-item i { width: 18px; text-align: center; color: var(--primary); }
.cmdk-item .cmdk-label { flex: 1; font-size: 14px; }
.cmdk-item .cmdk-sub { font-size: 12px; color: var(--text-tertiary); }
.cmdk-item.active { background: var(--primary-50); }
.cmdk-empty { padding: 20px; text-align: center; color: var(--text-tertiary); font-size: 13px; }
.cmdk-foot {
  padding: 8px 14px; border-top: 1px solid var(--border);
  font-size: 12px; color: var(--text-tertiary); text-align: right;
}

/* 教师寄语"正文"富文本宿主：与其它模块的 Quill 编辑器风格保持一致 */
.tw-quill-host {
  min-height: 160px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
}
.tw-quill-host .ql-toolbar { border-top-left-radius: 6px; border-top-right-radius: 6px; }
.tw-quill-host .ql-container { border-bottom-left-radius: 6px; border-bottom-right-radius: 6px; font-size: 14px; }


/* ========== 门户首页 · 方案①「冲刺号」竞技运动风 ========== */
/* 颜色全部跟随系统主题变量（--primary 等），右上角切换主题即换肤；
   本段置于文件末尾，新的 .portal-section-title 会自然覆盖旧定义。 */
.portal-section-title {
  font-size: 16px; font-weight: 800; margin: 26px 0 14px;
  display: flex; align-items: center; gap: 8px; color: var(--text-primary);
}
.portal-section-title:before {
  content: ""; width: 4px; height: 18px; border-radius: 2px;
  background: linear-gradient(180deg, var(--primary), var(--primary-dark));
}
.portal-section-title .ps-more {
  margin-left: auto; font-size: 12px; font-weight: 600; color: var(--primary);
  cursor: pointer; text-decoration: none; opacity: .9;
}
.portal-section-title .ps-more:hover { opacity: 1; text-decoration: underline; }

/* Hero 倒计时横幅 */
.portal-hero {
  position: relative; border-radius: 18px; padding: 30px 28px 26px; margin-bottom: 8px;
  color: #fff; overflow: hidden;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  box-shadow: 0 12px 30px rgba(0,0,0,.14);
}
.portal-hero:after {
  content: ""; position: absolute; right: -50px; top: -50px;
  width: 220px; height: 220px; background: rgba(255,255,255,.12); border-radius: 50%;
}
.portal-hero:before {
  content: ""; position: absolute; right: 70px; bottom: -80px;
  width: 170px; height: 170px; background: rgba(255,255,255,.08); border-radius: 50%;
}
.portal-hero-label { font-size: 13px; letter-spacing: 2px; opacity: .92; position: relative; z-index: 1; }
.portal-hero-class { font-size: 20px; font-weight: 700; margin-top: 6px; opacity: .96; position: relative; z-index: 1; }
.portal-hero-num { display: flex; align-items: baseline; gap: 10px; margin: 10px 0 4px; position: relative; z-index: 1; }
.portal-hero-num b { font-size: 76px; font-weight: 800; line-height: 1; }
.portal-hero-num span { font-size: 22px; font-weight: 600; }
.portal-hero-track { height: 10px; border-radius: 6px; background: rgba(255,255,255,.28); overflow: hidden; margin-top: 14px; position: relative; z-index: 1; }
.portal-hero-track i { display: block; height: 100%; background: #fff; border-radius: 6px; transition: width .6s ease; }
.portal-hero-sub { font-size: 13px; opacity: .95; margin-top: 10px; position: relative; z-index: 1; }
.portal-hero-fire { color: #fff; }

/* 今日速览 KPI */
.portal-kpi { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.portal-kpi-card {
  background: var(--surface); border-radius: 14px; padding: 16px;
  box-shadow: 0 4px 16px rgba(0,0,0,.05); border: 1px solid var(--border-soft);
  display: flex; flex-direction: column; gap: 6px; cursor: default;
  transition: transform .15s, box-shadow .15s;
}
.portal-kpi-card[onclick] { cursor: pointer; }
.portal-kpi-card:hover { transform: translateY(-3px); box-shadow: 0 8px 22px rgba(0,0,0,.09); }
.portal-kpi-ic { font-size: 20px; color: var(--primary); }
.portal-kpi-b { font-size: 24px; font-weight: 800; color: var(--text-primary); line-height: 1.1; }
.portal-kpi-s { font-size: 12px; color: var(--text-secondary); }

/* 班级动态 feed（2×2） */
.portal-feed { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.portal-dyn {
  background: var(--surface); border-radius: 14px; padding: 16px 18px;
  box-shadow: 0 4px 16px rgba(0,0,0,.05); border: 1px solid var(--border-soft);
  display: flex; flex-direction: column; cursor: pointer;
  transition: transform .15s, box-shadow .15s;
}
.portal-dyn:hover { transform: translateY(-3px); box-shadow: 0 8px 22px rgba(0,0,0,.09); }
.portal-dyn-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.portal-dyn-title { font-size: 14px; font-weight: 700; color: var(--text-primary); display: flex; align-items: center; gap: 7px; }
.portal-dyn-title i { color: var(--primary); }
.portal-dyn-tag { font-size: 11px; background: var(--primary-50); color: var(--primary-dark); padding: 2px 8px; border-radius: 6px; font-weight: 600; }
.portal-dyn-body { font-size: 13px; color: var(--text-secondary); line-height: 1.6; flex: 1; }
.portal-dyn-word { border-left: 4px solid var(--primary); padding: 10px 14px; background: var(--primary-50); border-radius: 0 10px 10px 0; font-style: italic; color: var(--text-primary); font-size: 14px; line-height: 1.7; }
.portal-dyn-word .by { display: block; font-style: normal; font-size: 12px; color: var(--primary-dark); margin-top: 8px; text-align: right; }
.portal-dyn-poll-bar { height: 8px; border-radius: 5px; background: var(--border-soft); overflow: hidden; margin: 8px 0 4px; }
.portal-dyn-poll-bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--primary), var(--primary-dark)); border-radius: 5px; }
.portal-dyn-go { margin-top: 10px; align-self: flex-start; border: none; background: var(--primary); color: #fff; padding: 6px 16px; border-radius: 8px; font-size: 13px; font-weight: 600; cursor: pointer; }

/* 全部功能快捷入口网格 */
.portal-modgrid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.portal-mod {
  background: var(--surface); border-radius: 14px; padding: 18px 14px; text-align: center;
  box-shadow: 0 4px 16px rgba(0,0,0,.05); border: 2px solid var(--border-soft);
  cursor: pointer; transition: transform .15s, border-color .15s, box-shadow .15s;
}
.portal-mod:hover { transform: translateY(-3px); border-color: var(--primary); box-shadow: 0 8px 22px rgba(0,0,0,.09); }
.portal-mod-ic {
  width: 48px; height: 48px; margin: 0 auto 10px; border-radius: 14px;
  background: var(--primary-50); display: flex; align-items: center; justify-content: center;
  color: var(--primary); font-size: 22px; transition: background .15s, color .15s;
}
.portal-mod:hover .portal-mod-ic { background: var(--primary); color: #fff; }
.portal-mod b { font-size: 14px; color: var(--text-primary); display: block; }
.portal-mod small { display: block; color: var(--text-secondary); font-size: 11px; margin-top: 3px; }

/* CTA 行动区 */
.portal-cta {
  margin-top: 26px; border-radius: 16px; padding: 20px 24px;
  display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap;
  color: #fff; background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  box-shadow: 0 10px 26px rgba(0,0,0,.12);
}
.portal-cta b { font-size: 17px; }
.portal-cta small { color: rgba(255,255,255,.88); }
.portal-cta-btn { border: none; background: #fff; color: var(--primary-dark); padding: 10px 22px; border-radius: 10px; font-weight: 700; cursor: pointer; font-size: 14px; }

/* 响应式 */
@media (max-width: 920px) {
  .portal-kpi, .portal-modgrid { grid-template-columns: repeat(2, 1fr); }
  .portal-feed { grid-template-columns: 1fr; }
  .portal-hero-num b { font-size: 60px; }
}
@media (max-width: 560px) {
  .portal-kpi, .portal-modgrid { grid-template-columns: 1fr; }
  .portal-hero { padding: 24px 18px 20px; }
  .portal-hero-num b { font-size: 52px; }
}
/* ===================== 班级照片书 ===================== */
.pb-toolbar {
  display: flex; flex-wrap: wrap; gap: 14px 22px; align-items: center;
  padding: 12px 14px; margin-top: 12px;
  background: var(--bg); border: 1px solid var(--border); border-radius: 10px;
}
.pb-toolbar label { font-size: 13px; color: var(--text-secondary); margin-right: 6px; }
.pb-plan-desc { font-size: 12px; color: var(--text-secondary); margin-left: 8px; }
.pb-nav { display: flex; align-items: center; gap: 10px; }
.pb-pageinfo { font-size: 13px; color: var(--text-secondary); min-width: 130px; text-align: center; }
.pb-music { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.pb-music-name { font-size: 13px; color: var(--primary); font-weight: 600; min-width: 120px; }
.pb-auto { font-size: 13px; color: var(--text-secondary); margin-left: 4px; cursor: pointer; }

.pb-book { display: flex; justify-content: center; margin-top: 16px; }
.pb-page {
  width: 100%; max-width: 760px; background: #fff; color: #222;
  border-radius: 8px; box-shadow: 0 10px 30px rgba(0,0,0,.16);
  position: relative; overflow: hidden; padding: 28px;
  box-sizing: border-box;
}
.pb-cover { background: linear-gradient(135deg, var(--primary), #ff8a4c); color: #fff; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; }
.pb-cover-inner { padding: 20px; }
.pb-cover-class { font-size: 18px; letter-spacing: 4px; opacity: .9; margin-bottom: 18px; }
.pb-cover-title { font-size: 38px; font-weight: 800; line-height: 1.3; text-shadow: 0 2px 8px rgba(0,0,0,.2); }
.pb-cover-sub { font-size: 16px; margin-top: 16px; opacity: .92; }
.pb-cover-date { font-size: 14px; margin-top: 22px; opacity: .85; }
.pb-cover-foot { position: absolute; bottom: 16px; left: 0; right: 0; text-align: center; font-size: 12px; opacity: .8; }

.pb-end { background: linear-gradient(135deg, #2b3a55, var(--primary)); color: #fff; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; }
.pb-end-mark { font-size: 40px; margin-bottom: 16px; opacity: .9; }
.pb-end-text { font-size: 22px; line-height: 1.6; max-width: 80%; }
.pb-end-class { font-size: 14px; margin-top: 18px; opacity: .85; letter-spacing: 2px; }

.pb-grid { display: grid; gap: 10px; height: calc(100% - 36px); }
.pb-grid-4 { grid-template-columns: repeat(2, 1fr); grid-template-rows: repeat(2, 1fr); }
.pb-grid-2 { grid-template-columns: repeat(2, 1fr); grid-template-rows: 1fr; }
.pb-grid-3 { grid-template-columns: repeat(3, 1fr); grid-template-rows: 1fr; }
.pb-grid-1 { grid-template-columns: 1fr; grid-template-rows: 1fr; }
.pb-cell { position: relative; display: flex; flex-direction: column; min-height: 0; }
.pb-cell-media { flex: 1; min-height: 0; background: #f0f0f0; border-radius: 6px; overflow: hidden; }
.pb-cell-media img, .pb-cell-media video { width: 100%; height: 100%; object-fit: cover; display: block; }
.pb-cap { font-size: 12px; color: #555; text-align: center; padding-top: 6px; }
.pb-pagenum { position: absolute; bottom: 8px; right: 14px; font-size: 12px; color: #999; }
.pb-empty { grid-column: 1 / -1; display: flex; align-items: center; justify-content: center; color: #bbb; font-size: 15px; height: 100%; }

/* 管理面板 */
.pb-form { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 18px; padding: 14px; }
.pb-field { display: flex; flex-direction: column; gap: 4px; }
.pb-field-label { font-size: 13px; color: var(--text-secondary); }
.pb-field-ctrl .form-control { width: 100%; }
.pb-form-actions { display: flex; align-items: center; gap: 14px; padding: 0 14px 14px; }
.pb-hint { font-size: 12px; color: var(--text-secondary); }
.pb-sel-head { font-size: 13px; color: var(--text-secondary); padding: 6px 14px; border-top: 1px dashed var(--border); }
.pb-sel-list { max-height: 320px; overflow-y: auto; padding: 0 14px 14px; display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 10px; }
.pb-sel-row { display: flex; align-items: center; gap: 8px; background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 8px; }
.pb-sel-thumb { width: 44px; height: 44px; object-fit: cover; border-radius: 6px; flex-shrink: 0; }
.pb-sel-chk { font-size: 12px; color: var(--text-secondary); white-space: nowrap; }
.pb-sel-cap { flex: 1; min-width: 80px; font-size: 12px; padding: 4px 6px; }
.pb-sel-name { font-size: 11px; color: var(--text-secondary); max-width: 70px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
/* 播放提示（自动播放被拦截时出现） */
.pb-play-hint {
  font-size: 12px; color: var(--primary); background: var(--bg);
  border: 1px solid var(--primary); padding: 3px 9px; border-radius: 6px; cursor: pointer;
  animation: pbBlink 1.6s ease-in-out infinite;
}
@keyframes pbBlink { 0%,100% { opacity: 1; } 50% { opacity: .45; } }
.pb-cell-media { min-height: 90px; }

/* 自适应：小屏收紧留白，避免照片书溢出 */
@media (max-width: 700px) {
  .pb-form { grid-template-columns: 1fr; }
  .pb-cover-title { font-size: 26px; }
  .pb-page { padding: 16px; border-radius: 6px; }
  .pb-book { margin-top: 10px; }
  .pb-grid { gap: 6px; }
  .pb-cell-media { border-radius: 4px; }
  .pb-cap { font-size: 11px; padding-top: 4px; }
  .pb-pagenum { font-size: 11px; bottom: 5px; right: 9px; }
  .pb-toolbar { gap: 10px 14px; padding: 10px 12px; }
  .pb-pageinfo { min-width: 96px; font-size: 12px; }
  .pb-music-name { min-width: 88px; font-size: 12px; }
  .pb-music input[type=range] { width: 72px; }
  .pb-cover-class { font-size: 14px; letter-spacing: 2px; }
  .pb-cover-sub { font-size: 13px; }
  .pb-end-text { font-size: 18px; }
}
@media (max-width: 420px) {
  .pb-page { padding: 12px; }
  .pb-cover-title { font-size: 21px; }
  .pb-cover-class { font-size: 12px; }
  .pb-grid-4 { grid-template-columns: 1fr; grid-template-rows: repeat(4, 1fr); }
  .pb-grid-3 { grid-template-columns: 1fr; grid-template-rows: repeat(3, 1fr); }
  .pb-grid-2 { grid-template-columns: 1fr; grid-template-rows: repeat(2, 1fr); }
}
@media (min-width: 1200px) {
  .pb-page { max-width: 840px; }
}