/* ========================================
   草莓熊辅导员工作台 v2.0 - 主题样式
   色系：草莓粉 #FF8BA7 / 莓果酒红 #C23373
        奶白 #FFF5F7 / 深棕 #5D2937
   ======================================== */

:root {
  --color-primary: #FF8BA7;
  --color-primary-light: #FFB3C6;
  --color-primary-lighter: #FFD4DF;
  --color-accent: #C23373;
  --color-accent-light: #D9508E;
  --color-bg: #FFF5F7;
  --color-bg-white: #FFFFFF;
  --color-text: #5D2937;
  --color-text-light: #8B5E6B;
  --color-text-muted: #B89099;
  --color-border: #FFD4DF;
  --color-success: #4CAF50;
  --color-warning: #FF9800;
  --color-danger: #f44336;
  --color-info: #2196F3;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 8px;
  --sidebar-width: 260px;
  --sidebar-collapsed: 64px;
  --topbar-height: 60px;
  --shadow: 0 2px 12px rgba(194, 51, 115, 0.08);
  --shadow-hover: 0 4px 20px rgba(194, 51, 115, 0.15);
  --shadow-card: 0 2px 8px rgba(93, 41, 55, 0.06);
  --transition: all 0.3s ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 14px;
  line-height: 1.6;
}

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--color-bg); border-radius: 3px; }
::-webkit-scrollbar-thumb { background: var(--color-primary-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-primary); }

/* ---- 顶部状态栏 ---- */
.topbar {
  height: var(--topbar-height);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  box-shadow: 0 2px 8px rgba(194, 51, 115, 0.2);
}
.topbar-left { display: flex; align-items: center; gap: 12px; }
.topbar-title { font-size: 18px; font-weight: 600; letter-spacing: 1px; }
.sidebar-toggle {
  background: rgba(255,255,255,0.2); border: none; color: #fff;
  border-radius: var(--radius-xs); width: 36px; height: 36px;
  cursor: pointer; display: flex; align-items: center; justify-content: center; transition: var(--transition);
}
.sidebar-toggle:hover { background: rgba(255,255,255,0.35); }
.topbar-right { display: flex; align-items: center; gap: 16px; font-size: 13px; }
.topbar-date { opacity: 0.9; }
.topbar-date .date-l2 { margin-left: 6px; }
.topbar-user { background: rgba(255,255,255,0.2); padding: 4px 14px; border-radius: 20px; font-size: 13px; }

/* ---- 布局 ---- */
.layout { display: flex; margin-top: var(--topbar-height); min-height: calc(100vh - var(--topbar-height)); }

/* ---- 侧边栏 ---- */
.sidebar {
  width: var(--sidebar-width); background: var(--color-bg-white);
  border-right: 1px solid var(--color-border); display: flex; flex-direction: column;
  position: fixed; top: 0; bottom: 0; left: 0;
  transition: var(--transition); z-index: 200; overflow: hidden;
}
.sidebar.collapsed { width: var(--sidebar-collapsed); }

.sidebar-logo {
  display: flex; align-items: center; gap: 10px; padding: 16px;
  padding-top: calc(var(--topbar-height) + 12px);
  border-bottom: 1px solid var(--color-border); white-space: nowrap; overflow: hidden; flex-shrink: 0;
}
.lotso-icon { flex-shrink: 0; display: flex; align-items: center; justify-content: center; }
.sidebar-title { font-size: 15px; font-weight: 600; color: var(--color-accent); }
.sidebar.collapsed .sidebar-title,
.sidebar.collapsed .nav-group-title,
.sidebar.collapsed .nav-sub-item span,
.sidebar.collapsed .nav-sub-icon,
.sidebar.collapsed .nav-group-arrow,
.sidebar.collapsed .sidebar-deco,
.sidebar.collapsed .sidebar-version { display: none; }

.sidebar-nav {
  flex: 1; padding: 8px 6px; overflow-y: auto; overflow-x: hidden;
}

/* 导航组 */
.nav-group { margin-bottom: 2px; }
.nav-group-header {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; border-radius: var(--radius-sm);
  cursor: pointer; transition: var(--transition);
  color: var(--color-text); font-weight: 500; font-size: 13px;
  user-select: none; white-space: nowrap;
}
.nav-group-header:hover { background: var(--color-primary-lighter); color: var(--color-accent); }
.nav-group-icon { font-size: 16px; flex-shrink: 0; width: 22px; text-align: center; }
.nav-group-title { flex: 1; font-size: 13px; }
.nav-group-arrow { font-size: 10px; transition: transform 0.2s; color: var(--color-text-muted); flex-shrink: 0; }
.nav-group.open .nav-group-arrow { transform: rotate(90deg); }
.nav-group.open .nav-group-header { background: var(--color-primary-lighter); color: var(--color-accent); }

/* 子导航列表 */
.nav-sub-list {
  max-height: 0; overflow: hidden; transition: max-height 0.35s ease;
  padding-left: 8px;
}
.nav-group.open .nav-sub-list { max-height: 1200px; }

.nav-sub-item {
  display: flex; align-items: center; gap: 8px;
  padding: 9px 14px 9px 24px; border-radius: var(--radius-xs);
  color: var(--color-text-light); cursor: pointer; transition: var(--transition);
  font-size: 13px; text-decoration: none; white-space: nowrap; overflow: hidden;
}
.nav-sub-item:hover { background: var(--color-primary-lighter); color: var(--color-accent); }
.nav-sub-item.active {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  color: #fff; box-shadow: 0 2px 6px rgba(255,139,167,0.3);
}
.nav-sub-icon { font-size: 14px; flex-shrink: 0; width: 18px; text-align: center; }

/* 二级子目录：默认折叠，父级.open时展开 */
.nav-sub2-list, .nav-sub3-list {
  max-height: 0; overflow: hidden; transition: max-height 0.3s ease;
}
.nav-sub-item.open + .nav-sub2-list,
.nav-sub2-item.open + .nav-sub3-list { max-height: 1000px; }

.nav-sub2-list { padding-left: 12px; }
.nav-sub2-item {
  display: flex; align-items: center; gap: 6px;
  padding: 7px 14px 7px 36px; border-radius: var(--radius-xs);
  color: var(--color-text-muted); cursor: pointer; transition: var(--transition);
  font-size: 12px; text-decoration: none; white-space: nowrap; overflow: hidden;
}
.nav-sub2-item:hover { background: var(--color-primary-lighter); color: var(--color-accent); }
.nav-sub2-item.active {
  background: var(--color-primary-lighter); color: var(--color-accent); font-weight: 600;
}

/* 三级子目录 */
.nav-sub3-list { padding-left: 14px; }
.nav-sub3-item {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 14px 6px 48px; border-radius: var(--radius-xs);
  color: var(--color-text-muted); cursor: pointer; transition: var(--transition);
  font-size: 11.5px; text-decoration: none; white-space: nowrap; overflow: hidden;
}
.nav-sub3-item:hover { background: var(--color-primary-lighter); color: var(--color-accent); }
.nav-sub3-item.active {
  background: var(--color-primary-lighter); color: var(--color-accent); font-weight: 600;
}

/* 带子目录的导航项右侧小箭头 */
.nav-sub-item.has-children::after,
.nav-sub2-item.has-children::after {
  content: '▶'; font-size: 9px; color: var(--color-text-muted); margin-left: auto; transition: transform 0.2s;
}
.nav-sub-item.has-children.open::after,
.nav-sub2-item.has-children.open::after { transform: rotate(90deg); }

/* 侧边栏底部 */
.sidebar-footer {
  padding: 12px; border-top: 1px solid var(--color-border);
  text-align: center; white-space: nowrap; overflow: hidden; flex-shrink: 0;
}
.sidebar-deco { font-size: 12px; letter-spacing: 2px; margin-bottom: 2px; }
.sidebar-version { font-size: 11px; color: var(--color-text-muted); }
.sidebar-privacy { font-size: 10px; color: #4CAF50; margin-top: 2px; }
.sidebar.collapsed .sidebar-privacy { display: none; }

/* ---- 顶部栏退出按钮 ---- */
.topbar-logout {
  background: rgba(255,255,255,0.2); border: none; color: #fff;
  padding: 4px 12px; border-radius: 20px; font-size: 12px; cursor: pointer;
  transition: background 0.3s;
}
.topbar-logout:hover { background: rgba(255,255,255,0.35); }

/* ---- 登录遮罩层 ---- */
.login-overlay {
  position: fixed; top: 0; left: 0; width: 100vw; height: 100vh;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-primary) 50%, var(--color-primary-lighter) 100%);
  display: flex; align-items: center; justify-content: center; z-index: 9999;
}
.login-overlay.hidden { display: none; }
.login-box {
  background: var(--color-bg-white); border-radius: 24px; padding: 40px 36px; width: 360px;
  text-align: center; box-shadow: 0 20px 60px color-mix(in srgb, var(--color-accent) 40%, transparent);
  animation: loginFadeIn 0.5s ease;
}
@keyframes loginFadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.login-bear { margin-bottom: 12px; }
.login-title { font-size: 24px; font-weight: 800; color: var(--color-accent); margin-bottom: 4px; }
.login-subtitle { font-size: 14px; color: var(--color-text-light); margin-bottom: 20px; }
.login-privacy {
  font-size: 11px; color: var(--color-success); background: color-mix(in srgb, var(--color-success) 10%, transparent); border-radius: 10px;
  padding: 10px 14px; margin-bottom: 20px; line-height: 1.8;
}
.login-input {
  width: 100%; padding: 14px 18px; font-size: 18px; text-align: center;
  border: 2px solid var(--color-primary-lighter); border-radius: 14px; outline: none;
  letter-spacing: 8px; box-sizing: border-box; transition: border-color 0.3s;
  font-family: inherit; background: var(--color-bg-white); color: var(--color-text);
}
.login-input:focus { border-color: var(--color-accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-accent) 12%, transparent); }
.login-btn {
  width: 100%; margin-top: 16px; padding: 14px; font-size: 16px; font-weight: 700;
  background: linear-gradient(135deg, var(--color-accent), var(--color-primary)); color: #fff;
  border: none; border-radius: 14px; cursor: pointer; transition: transform 0.2s, box-shadow 0.2s;
}
.login-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 24px color-mix(in srgb, var(--color-accent) 35%, transparent); }
.login-btn:active { transform: translateY(0); }
.login-error { margin-top: 12px; font-size: 13px; color: var(--color-danger); min-height: 18px; }

/* ---- 主内容区 ---- */
.main-content {
  flex: 1; margin-left: var(--sidebar-width); padding: 24px;
  transition: var(--transition); min-height: calc(100vh - var(--topbar-height));
}
.sidebar.collapsed ~ .main-content { margin-left: var(--sidebar-collapsed); }

/* ---- 页面通用 ---- */
.page-header { margin-bottom: 24px; }
.page-title { font-size: 22px; font-weight: 700; color: var(--color-text); margin-bottom: 4px; }
.page-subtitle { font-size: 13px; color: var(--color-text-muted); }

/* ---- 数据卡片 ---- */
.stat-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 14px; margin-bottom: 24px; }
.stat-card {
  background: var(--color-bg-white); border-radius: var(--radius); padding: 18px;
  box-shadow: var(--shadow-card); transition: var(--transition);
  border: 1px solid var(--color-border); position: relative; overflow: hidden;
}
.stat-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.stat-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg, var(--color-primary), var(--color-accent)); }
.stat-card-icon { font-size: 26px; margin-bottom: 6px; }
.stat-card-value { font-size: 30px; font-weight: 700; color: var(--color-accent); line-height: 1.2; }
.stat-card-label { font-size: 13px; color: var(--color-text-light); margin-top: 2px; }

/* ---- 自动化任务推送区 ---- */
.auto-task-section { margin-bottom: 24px; }
.auto-task-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; padding: 0 4px; }
.auto-task-title { font-size: 16px; font-weight: 700; color: var(--color-accent); }
.auto-task-date { font-size: 13px; color: var(--color-text-muted); }
.auto-task-card { min-height: 110px; transition: all 0.3s; }
.auto-task-card:hover { transform: translateY(-3px); box-shadow: 0 6px 20px rgba(194,51,115,0.3); }

/* ---- 邀请链接卡片 ---- */
.invite-card { transition: all 0.3s ease; }
.invite-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.invite-link-section { margin-bottom: 24px; }
@media (max-width: 600px) {
  .invite-link-section { grid-template-columns: 1fr !important; }
}

/* ---- 卡片容器 ---- */
.card {
  background: var(--color-bg-white); border-radius: var(--radius); padding: 20px;
  box-shadow: var(--shadow-card); border: 1px solid var(--color-border); margin-bottom: 20px;
}
.card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.card-title { font-size: 16px; font-weight: 600; color: var(--color-text); display: flex; align-items: center; gap: 8px; }

/* ---- 按钮 ---- */
.btn {
  display: inline-flex; align-items: center; gap: 6px; padding: 8px 18px;
  border-radius: var(--radius); border: none; font-size: 14px; font-weight: 500;
  cursor: pointer; transition: var(--transition); text-decoration: none; white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  color: #fff; box-shadow: 0 2px 8px rgba(255,139,167,0.3);
}
.btn-primary:hover { box-shadow: 0 4px 12px rgba(194,51,115,0.35); transform: translateY(-1px); }
.btn-secondary { background: var(--color-primary-lighter); color: var(--color-accent); }
.btn-secondary:hover { background: var(--color-primary-light); }
.btn-danger { background: #ffe0e0; color: var(--color-danger); }
.btn-danger:hover { background: #ffcdd2; }
.btn-accent { background: linear-gradient(135deg, #7B68EE 0%, var(--color-accent) 100%); color: #fff; box-shadow: 0 2px 8px rgba(123,104,238,0.3); }
.btn-accent:hover { box-shadow: 0 4px 12px rgba(123,104,238,0.4); transform: translateY(-1px); }
.btn-success { background: #e8f5e9; color: var(--color-success); }
.btn-success:hover { background: #c8e6c9; }
.btn-info { background: #e3f2fd; color: var(--color-info); }
.btn-info:hover { background: #bbdefb; }
.btn-sm { padding: 5px 12px; font-size: 12px; border-radius: var(--radius-xs); }
.btn-icon { padding: 6px 10px; font-size: 14px; border-radius: var(--radius-xs); }

/* ---- 表格 ---- */
.table-wrapper { overflow-x: auto; border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead th {
  background: var(--color-primary-lighter); color: var(--color-accent);
  font-weight: 600; text-align: left; padding: 11px 12px; white-space: nowrap;
  border-bottom: 2px solid var(--color-border);
}
thead th:first-child { border-top-left-radius: var(--radius-sm); }
thead th:last-child { border-top-right-radius: var(--radius-sm); }
tbody td { padding: 9px 12px; border-bottom: 1px solid var(--color-bg); color: var(--color-text); }
tbody tr { transition: var(--transition); }
tbody tr:hover { background: var(--color-bg); }
tbody tr:last-child td { border-bottom: none; }
.table-empty { text-align: center; padding: 48px 20px; color: var(--color-text-muted); font-size: 14px; }

/* ---- 表单 ---- */
.form-group { margin-bottom: 14px; }
.form-label { display: block; font-size: 13px; font-weight: 500; color: var(--color-text); margin-bottom: 5px; }
.form-label .required { color: var(--color-danger); }
.form-input, .form-select, .form-textarea {
  width: 100%; padding: 10px 14px; border: 1.5px solid var(--color-border);
  border-radius: var(--radius-xs); font-size: 14px; color: var(--color-text);
  background: var(--color-bg-white); transition: var(--transition); font-family: inherit;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(255,139,167,0.15);
}
.form-textarea { resize: vertical; min-height: 80px; }

/* ---- AI智能解析录入 ---- */
.ai-parse-box textarea { border: 2px dashed var(--color-border) !important; }
.ai-parse-box textarea:focus { border-color: var(--color-accent) !important; border-style: solid !important; box-shadow: 0 0 0 3px rgba(194,51,115,0.12) !important; }

/* ---- 技能大赛答题框 ---- */
.quiz-answer-textarea {
  background: #fff;
  color: #5D2937;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.quiz-answer-textarea:focus {
  border-color: #C23373 !important;
  box-shadow: 0 0 0 3px rgba(194,51,115,0.12);
}
.quiz-answer-textarea::placeholder {
  color: #ccc;
  font-size: 12px;
}
.quiz-option:hover {
  background: #FFF5F7 !important;
  border-color: #FFD4DF !important;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; }

/* ---- 筛选栏 ---- */
.filter-bar {
  display: flex; flex-wrap: wrap; gap: 12px; align-items: center;
  margin-bottom: 20px; padding: 14px; background: var(--color-bg-white);
  border-radius: var(--radius); border: 1px solid var(--color-border);
}
.filter-bar .form-input, .filter-bar .form-select { width: auto; min-width: 130px; padding: 8px 12px; font-size: 13px; }
.filter-bar .search-box { flex: 1; min-width: 180px; }
.filter-actions {
  display: flex; gap: 8px; margin-left: auto;
  overflow-x: auto; flex-shrink: 0; max-width: 100%;
  -webkit-overflow-scrolling: touch; scrollbar-width: none;
}
.filter-actions::-webkit-scrollbar { display: none; }
.filter-actions .btn { flex-shrink: 0; white-space: nowrap; }

/* ---- 标签/徽章 ---- */
.badge { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: 12px; font-weight: 500; white-space: nowrap; }
.badge-primary { background: var(--color-primary-lighter); color: var(--color-accent); }
.badge-success { background: #e8f5e9; color: var(--color-success); }
.badge-warning { background: #fff3e0; color: var(--color-warning); }
.badge-danger { background: #ffebee; color: var(--color-danger); }
.badge-info { background: #e3f2fd; color: var(--color-info); }
.badge-default { background: #f5f5f5; color: #999; }
.badge-accent { background: linear-gradient(135deg, var(--color-primary-lighter), #fce4ec); color: var(--color-accent); font-weight: 600; }

/* 草莓风险等级badge */
.badge-straw-green { background: #e8f5e9; color: #2e7d32; border: 1px solid #a5d6a7; }
.badge-straw-yellow { background: #fff8e1; color: #f57f17; border: 1px solid #ffe082; }
.badge-straw-red { background: #ffebee; color: #c62828; border: 1px solid #ef9a9a; animation: pulse-warn 2s infinite; }

@keyframes pulse-warn {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* ---- 模态框 ---- */
.modal-overlay {
  display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  /* z-index 必须高于 .login-overlay(9999)：否则登录页弹出的「重置密码」等弹窗会被遮罩盖住，表现为点击无反应 */
  background: rgba(93,41,55,0.4); z-index: 10000; align-items: center; justify-content: center; backdrop-filter: blur(2px);
}
.modal-overlay.show { display: flex; animation: fadeIn 0.2s ease; }
.modal {
  background: var(--color-bg-white); border-radius: var(--radius); width: 90%; max-width: 640px;
  max-height: 85vh; display: flex; flex-direction: column; box-shadow: 0 20px 60px rgba(194,51,115,0.2); animation: slideUp 0.3s ease;
}
.modal-header {
  display: flex; align-items: center; justify-content: space-between; padding: 16px 22px;
  border-bottom: 1px solid var(--color-border);
  background: linear-gradient(135deg, var(--color-primary-lighter) 0%, var(--color-bg) 100%);
  border-radius: var(--radius) var(--radius) 0 0;
}
.modal-title { font-size: 16px; font-weight: 600; color: var(--color-accent); }
.modal-close {
  background: none; border: none; font-size: 24px; color: var(--color-text-muted);
  cursor: pointer; line-height: 1; padding: 0; width: 32px; height: 32px;
  border-radius: var(--radius-xs); transition: var(--transition);
}
.modal-close:hover { background: var(--color-primary-lighter); color: var(--color-accent); }
.modal-body { padding: 22px; overflow-y: auto; }
.modal-footer { display: flex; justify-content: flex-end; gap: 10px; padding-top: 14px; border-top: 1px solid var(--color-border); margin-top: 6px; }

/* ---- Toast ---- */
.toast {
  position: fixed; top: 80px; right: 24px; background: var(--color-accent); color: #fff;
  /* 同样需高于登录遮罩(9999)，否则登录态下的提示（如"密码已清除"）看不见 */
  padding: 12px 24px; border-radius: var(--radius); font-size: 14px; z-index: 10001;
  opacity: 0; transform: translateX(100px); transition: all 0.3s ease;
  box-shadow: 0 4px 16px rgba(194,51,115,0.3);
}
.toast.show { opacity: 1; transform: translateX(0); }
.toast.success { background: var(--color-success); }
.toast.error { background: var(--color-danger); }

/* ---- 仪表盘 ---- */
.welcome-banner {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  border-radius: var(--radius); padding: 28px 32px; color: #fff; margin-bottom: 24px;
  position: relative; overflow: hidden;
}
.welcome-banner::after { content: '🧸'; position: absolute; right: 30px; top: 50%; transform: translateY(-50%); font-size: 80px; opacity: 0.15; }
.welcome-title { font-size: 21px; font-weight: 700; margin-bottom: 10px; letter-spacing: 1px; cursor: pointer; }
.welcome-subtitle { font-size: 14px; opacity: 0.9; }
.welcome-countdown { font-size: 32px; font-weight: 800; color: #fff; margin-top: 10px; letter-spacing: 1px; text-shadow: 0 2px 8px rgba(93,41,55,.28); }

/* 学生搜索栏 */
.student-search-bar {
  background: var(--color-bg-white); border-radius: var(--radius); padding: 20px 24px;
  box-shadow: var(--shadow-card); border: 2px solid var(--color-primary-lighter); margin-bottom: 24px;
}
.student-search-bar .search-title { font-size: 14px; font-weight: 600; color: var(--color-accent); margin-bottom: 12px; }
.student-search-row { display: flex; gap: 12px; align-items: center; }
.student-search-row .form-input { flex: 1; max-width: 400px; padding: 12px 16px; font-size: 15px; }
.student-search-results { margin-top: 14px; display: none; }

/* 搜索结果显示 */
.search-result-group { margin-bottom: 16px; }
.search-result-group-title { font-size: 13px; font-weight: 600; color: var(--color-accent); margin-bottom: 8px; padding: 6px 10px; background: var(--color-primary-lighter); border-radius: 6px; display: inline-block; }
.search-result-group .search-result-table { font-size: 12px; }
.search-result-group .search-result-table td { padding: 5px 8px; }

/* ---- 快捷列表 ---- */
.quick-list { list-style: none; }
.quick-list-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 0; border-bottom: 1px solid var(--color-bg); transition: var(--transition);
}
.quick-list-item:last-child { border-bottom: none; }
.quick-list-item:hover { padding-left: 8px; }
.quick-list-info { display: flex; align-items: center; gap: 10px; }
.quick-list-name { font-size: 14px; color: var(--color-text); font-weight: 500; }
.quick-list-date { font-size: 12px; color: var(--color-text-muted); }

/* ---- 双栏/四栏布局 ---- */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.four-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

/* ---- 操作按钮组 ---- */
.action-btns { display: flex; gap: 5px; white-space: nowrap; }

/* ---- 文件上传区 ---- */
.file-upload-zone { cursor: pointer; }
.file-upload-zone:hover { border-color: var(--color-primary) !important; background: var(--color-primary-lighter) !important; }

/* ---- 导入选择卡片 ---- */
.import-choice-card:hover { border-color: var(--color-accent) !important; background: var(--color-primary-lighter) !important; transform: translateY(-2px); box-shadow: 0 4px 16px rgba(194,51,115,0.2); }

/* ---- 分页信息 ---- */
.pagination-info { padding: 8px 0; font-size: 12px; color: var(--color-text-muted); }

/* ---- 风险标签 ---- */
.risk-straw-green { color: #2e7d32; }
.risk-straw-yellow { color: #f57f17; }
.risk-straw-red { color: #c62828; font-weight: 700; }

/* ---- 动画 ---- */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes pageIn { from { opacity: 0; transform: translateX(10px); } to { opacity: 1; transform: translateX(0); } }
.page-content { animation: pageIn 0.3s ease; }

/* ---- 草莓装饰 ---- */
.strawberry-deco {
  position: fixed; bottom: 16px; right: 16px; font-size: 28px; opacity: 0.12; pointer-events: none; z-index: 1;
}

/* ---- 侧边栏遮罩层（移动端抽屉） ---- */
.sidebar-overlay {
  display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(93, 41, 55, 0.4); z-index: 199;
  opacity: 0; transition: opacity 0.3s ease;
}
.sidebar-overlay.show { display: block; opacity: 1; }

/* ---- 触屏设备优化 ---- */
@media (hover: none) and (pointer: coarse) {
  .btn, .sidebar-toggle, .nav-sub-item, .nav-group-header {
    min-height: 44px;
  }
  .btn-sm { min-height: 36px; }
  .quiz-option { min-height: 40px; }
}

/* ---- 表格触屏滑动优化 ---- */
.table-wrapper, .data-table-container {
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
}
.table-scroll-hint {
  position: relative;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
}
.table-scroll-hint::after {
  content: '👈 左右滑动查看更多 👉';
  display: block; text-align: center; font-size: 11px;
  color: var(--color-text-muted); padding: 4px 0;
  background: var(--color-primary-lighter); border-radius: 0 0 var(--radius-xs) var(--radius-xs);
  position: sticky;
  left: 0;
  min-width: 100%;
}

/* ---- 响应式 ---- */
@media (max-width: 768px) {
  /* 抽屉式侧边栏 */
  .sidebar {
    transform: translateX(-100%);
    box-shadow: 2px 0 20px rgba(0,0,0,0.15);
    width: var(--sidebar-width);
  }
  .sidebar.mobile-open { transform: translateX(0); }
  .sidebar.collapsed { width: var(--sidebar-width); }
  .sidebar.collapsed .sidebar-title,
  .sidebar.collapsed .nav-group-title,
  .sidebar.collapsed .nav-sub-item span,
  .sidebar.collapsed .nav-sub-icon,
  .sidebar.collapsed .nav-group-arrow,
  .sidebar.collapsed .sidebar-deco,
  .sidebar.collapsed .sidebar-version { display: inline; }

  .main-content {
    margin-left: 0 !important;
    padding: 14px;
  }
  .layout { margin-top: var(--topbar-height); }

  /* 防止 iOS 输入框聚焦时缩放 */
  .form-input, .form-select, .form-textarea, input[type="text"], input[type="password"], textarea, select {
    font-size: 16px;
  }

  .form-row, .form-row-3 { grid-template-columns: 1fr; }
  .two-col, .four-panel { grid-template-columns: 1fr; }
  .stat-cards { grid-template-columns: 1fr 1fr; }

  /* 顶部栏精简 */
  .topbar { padding: 0 12px; }
  /* 汉堡按钮与左侧区防挤压，保证侧边导航入口可见 */
  .topbar-left { flex-shrink: 0; gap: 6px; }
  .sidebar-toggle { flex-shrink: 0; width: 36px; height: 36px; font-size: 18px; }
  /* 日期与学期/值班分两行 */
  .topbar-date { display: inline-flex !important; flex-direction: column; align-items: flex-start; gap: 2px; white-space: normal; line-height: 1.45; padding: 5px 10px; max-width: 150px; }
  .topbar-date .date-l2 { margin-left: 0; font-size: 11px; }
  .topbar-title { font-size: 14px; }
  .topbar-date, .topbar-user { font-size: 11px; }
  .topbar-right { gap: 8px; }
  .topbar-logout { padding: 4px 10px; font-size: 11px; }

  /* 搜索栏纵向排列 */
  .student-search-row { flex-direction: column; gap: 8px; }
  .student-search-row .form-input { width: 100%; }

  /* 筛选栏适配：按钮组可横向滑动 */
  .filter-bar { flex-direction: column; align-items: stretch; gap: 10px; padding: 12px; }
  .filter-bar .search-box { width: 100%; min-width: 0; }
  .filter-actions { margin-left: 0; width: 100%; justify-content: flex-start; padding-bottom: 4px; }
  .filter-actions .btn { padding: 8px 14px; font-size: 13px; }

  .welcome-title { font-size: 17px; }
  .welcome-countdown { font-size: 24px; }
  .welcome-subtitle { font-size: 12px; }

  /* 自动化卡片 */
  .auto-task-card { min-height: 100px; }
  .stat-card-value { font-size: 16px; }
  .stat-card-label { font-size: 11px; }

  /* 邀请链接卡片纵向 */
  .invite-link-section { grid-template-columns: 1fr !important; }

  /* 表格水平滚动 */
  .table-wrapper, .data-table-container {
    overflow-x: auto; -webkit-overflow-scrolling: touch;
  }
  table { min-width: 500px; }
}

@media (max-width: 480px) {
  .stat-cards { grid-template-columns: 1fr; }
  .main-content { padding: 10px; }
  .auto-task-title { font-size: 14px; }

  /* 模态框全屏化 */
  .modal {
    width: 95% !important; max-width: 95% !important;
    max-height: 90vh; margin: 0 auto;
  }
  .modal-body { padding: 14px; max-height: 75vh; overflow-y: auto; }

  /* 卡片内边距减小 */
  .card { padding: 14px; }

  /* 搜索结果表格优化 */
  .search-result-table { font-size: 11px; }
}

/* ====================================================
   一键换肤主题（通过 document.documentElement[data-theme] 切换）
   默认 :root 为草莓熊粉；以下仅覆盖同名变量即可整体换色
   语义色（成功/警告/危险/信息）保持通用，不随主题变化
   ==================================================== */

/* 治愈蓝 */
:root[data-theme="blue"] {
  --color-primary: #7BA7FF;
  --color-primary-light: #A9C5FF;
  --color-primary-lighter: #D6E6FF;
  --color-accent: #3A6EA5;
  --color-accent-light: #5B8FC7;
  --color-bg: #F0F6FF;
  --color-bg-white: #FFFFFF;
  --color-text: #2C3E50;
  --color-text-light: #5A6B7B;
  --color-text-muted: #93A4B5;
  --color-border: #C9DBFF;
  --shadow: 0 2px 12px rgba(58, 110, 165, 0.08);
  --shadow-hover: 0 4px 20px rgba(58, 110, 165, 0.15);
  --shadow-card: 0 2px 8px rgba(44, 62, 80, 0.06);
}

/* 森林绿 */
:root[data-theme="green"] {
  --color-primary: #7BC47F;
  --color-primary-light: #A5D6A8;
  --color-primary-lighter: #D7EFD9;
  --color-accent: #2E7D32;
  --color-accent-light: #4CAF50;
  --color-bg: #F1FAF2;
  --color-bg-white: #FFFFFF;
  --color-text: #2E4030;
  --color-text-light: #5A6B5C;
  --color-text-muted: #93A596;
  --color-border: #C8E6C9;
  --shadow: 0 2px 12px rgba(46, 125, 50, 0.08);
  --shadow-hover: 0 4px 20px rgba(46, 125, 50, 0.15);
  --shadow-card: 0 2px 8px rgba(46, 64, 48, 0.06);
}

/* 暖木棕 */
:root[data-theme="wood"] {
  --color-primary: #C9A27A;
  --color-primary-light: #DCB894;
  --color-primary-lighter: #EFE0CE;
  --color-accent: #8B5E3C;
  --color-accent-light: #A8764E;
  --color-bg: #FBF6EF;
  --color-bg-white: #FFFFFF;
  --color-text: #5A4632;
  --color-text-light: #8A7257;
  --color-text-muted: #B59B82;
  --color-border: #E8D5BF;
  --shadow: 0 2px 12px rgba(139, 94, 60, 0.08);
  --shadow-hover: 0 4px 20px rgba(139, 94, 60, 0.15);
  --shadow-card: 0 2px 8px rgba(90, 70, 50, 0.06);
}

/* 草莓熊粉（显式，与默认 :root 一致，便于切回） */
:root[data-theme="pink"] {
  --color-primary: #FF8BA7;
  --color-primary-light: #FFB3C6;
  --color-primary-lighter: #FFD4DF;
  --color-accent: #C23373;
  --color-accent-light: #D9508E;
  --color-bg: #FFF5F7;
  --color-bg-white: #FFFFFF;
  --color-text: #5D2937;
  --color-text-light: #8B5E6B;
  --color-text-muted: #B89099;
  --color-border: #FFD4DF;
  --shadow: 0 2px 12px rgba(194, 51, 115, 0.08);
  --shadow-hover: 0 4px 20px rgba(194, 51, 115, 0.15);
  --shadow-card: 0 2px 8px rgba(93, 41, 55, 0.06);
}

/* 商务风：深蓝灰，专业稳重 */
:root[data-theme="business"] {
  --color-primary: #5B7FFF;
  --color-primary-light: #8AA5FF;
  --color-primary-lighter: #D6E0FF;
  --color-accent: #1E3A8A;
  --color-accent-light: #3B5BDB;
  --color-bg: #F1F5F9;
  --color-bg-white: #FFFFFF;
  --color-text: #1E293B;
  --color-text-light: #475569;
  --color-text-muted: #94A3B8;
  --color-border: #E2E8F0;
  --shadow: 0 2px 12px rgba(30, 58, 138, 0.08);
  --shadow-hover: 0 4px 20px rgba(30, 58, 138, 0.15);
  --shadow-card: 0 2px 8px rgba(30, 41, 59, 0.06);
}

/* 简约线条风：黑白灰，极简克制 */
:root[data-theme="minimal"] {
  --color-primary: #4B5563;
  --color-primary-light: #6B7280;
  --color-primary-lighter: #E5E7EB;
  --color-accent: #111827;
  --color-accent-light: #374151;
  --color-bg: #FAFAFA;
  --color-bg-white: #FFFFFF;
  --color-text: #111827;
  --color-text-light: #4B5563;
  --color-text-muted: #9CA3AF;
  --color-border: #E5E7EB;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.04);
}

/* 温馨风：暖橙米色调 */
:root[data-theme="warm"] {
  --color-primary: #F4A261;
  --color-primary-light: #F6C177;
  --color-primary-lighter: #FDE8D0;
  --color-accent: #C2410C;
  --color-accent-light: #E76F51;
  --color-bg: #FFFBF5;
  --color-bg-white: #FFFFFF;
  --color-text: #5C4033;
  --color-text-light: #8B6F5E;
  --color-text-muted: #B8A090;
  --color-border: #FDE8D0;
  --shadow: 0 2px 12px rgba(194, 65, 12, 0.08);
  --shadow-hover: 0 4px 20px rgba(194, 65, 12, 0.15);
  --shadow-card: 0 2px 8px rgba(92, 64, 51, 0.06);
}