:root{
  --primary:#2b6cb0;
  --primary-dark:#1f4e80;
  --bg:#f4f6f9;
  --panel:#ffffff;
  --border:#e2e8f0;
  --text:#1a202c;
  --muted:#718096;
  --danger:#e53e3e;
  --ok:#38a169;
}
*{box-sizing:border-box;}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text);font-size:14px;}
.topbar{display:flex;align-items:center;gap:24px;background:var(--primary);color:#fff;
  padding:0 20px;height:54px;box-shadow:0 2px 6px rgba(0,0,0,.1);}
.brand{font-weight:700;font-size:18px;letter-spacing:1px;display:flex;align-items:baseline;gap:8px;}
.brand-sub{font-size:12px;font-weight:400;letter-spacing:0;opacity:.85;}
.nav{display:flex;gap:6px;flex:1;}
.nav-link{color:#dbeafe;text-decoration:none;padding:8px 14px;border-radius:6px;font-size:14px;}
.nav-link:hover{background:rgba(255,255,255,.12);color:#fff;}
.nav-link.active{background:#fff;color:var(--primary);font-weight:600;}
.userbox{font-size:13px;display:flex;align-items:center;gap:10px;}
.btn-sm{background:rgba(255,255,255,.18);color:#fff;padding:5px 12px;border-radius:6px;text-decoration:none;font-size:13px;}
.btn-sm:hover{background:rgba(255,255,255,.3);}
.container{max-width:1600px;margin:22px auto;padding:0 18px;}
.panel{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:18px;margin-bottom:18px;
  box-shadow:0 1px 3px rgba(0,0,0,.04);}
h1,h2,h3{margin:0 0 14px;}
.toolbar{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-start;margin-bottom:14px;}
.search-bar{flex:1;min-width:260px;display:flex;flex-direction:column;gap:10px;}
.search-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.filter-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;position:relative;z-index:2;}
.actions{display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.search-row input[name="q"]{flex:1;min-width:200px;padding:9px 12px;border:1px solid var(--border);border-radius:7px;font-size:14px;}
.date-range{display:flex;align-items:center;gap:6px;white-space:nowrap;color:var(--muted);font-size:13px;}
.date-range input[type="date"]{padding:8px 10px;border:1px solid var(--border);border-radius:7px;font-size:14px;color:var(--text);}
.filter-sel{flex:0 0 auto;min-width:150px;padding:8px 10px;border:1px solid var(--border);border-radius:7px;font-size:13px;color:var(--text);background:#fff;max-width:200px;cursor:pointer;}
.filter-sel:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(43,140,212,.15);}
.btn{display:inline-block;background:var(--primary);color:#fff;border:none;padding:9px 16px;border-radius:7px;
  font-size:14px;cursor:pointer;text-decoration:none;}
.btn:hover{background:var(--primary-dark);}
.btn.ghost{background:#edf2f7;color:var(--text);}
.btn.ghost:hover{background:#e2e8f0;}
.btn.danger{background:var(--danger);}
.btn.danger:hover{background:#c53030;}
.btn.ok{background:var(--ok);}
.count{color:var(--muted);font-size:13px;}
.col-set{font-size:13px;}
.col-set .muted{margin-left:6px;}
.col-chks{display:flex;flex-wrap:wrap;gap:9px 18px;margin:12px 0 4px;}
.col-chks label{display:flex;align-items:center;gap:5px;cursor:pointer;user-select:none;}
.col-actions{display:flex;gap:10px;margin-top:8px;}
table{width:100%;border-collapse:collapse;background:#fff;font-size:13.5px;}
th,td{padding:9px 10px;border-bottom:1px solid var(--border);text-align:left;white-space:nowrap;}
th{background:#f7fafc;color:var(--muted);font-weight:600;position:sticky;top:0;}
tbody tr:hover{background:#f7fafc;}
/* 结算状态为“已结算”的整行柔和高亮，不影响正常阅读 */
tbody tr.row-settled{background:#f0fff7;}
tbody tr.row-settled:hover{background:#e3fbf2;}
.row-settled td:first-child{box-shadow:inset 3px 0 0 #38a169;}
td.wrap{white-space:normal;word-break:break-all;}
.row-actions a{margin-right:8px;font-size:13px;text-decoration:none;color:var(--primary);}
.row-actions a.del{color:var(--danger);}
.row-actions a.conv{color:var(--ok);font-weight:600;margin-right:8px;}
/* 批量编辑工具栏 */
.batch-bar{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:12px;padding:10px 12px;
  background:#f7fafc;border:1px solid var(--border);border-radius:8px;}
.batch-bar .selall{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--text);cursor:pointer;user-select:none;}
.batch-bar .batch-sel{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--muted);}
.batch-bar select{padding:7px 9px;border:1px solid var(--border);border-radius:7px;font-size:13px;color:var(--text);background:#fff;cursor:pointer;}
.batch-bar select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(43,140,212,.15);}
td.col-check,th.col-check{width:40px;text-align:center;padding-left:0;padding-right:0;}
.pager{display:flex;gap:8px;align-items:center;margin-top:14px;justify-content:flex-end;}
.pager a,.pager span{padding:6px 11px;border:1px solid var(--border);border-radius:6px;text-decoration:none;color:var(--text);}
.pager a:hover{background:#edf2f7;}
.pager .cur{background:var(--primary);color:#fff;border-color:var(--primary);}
.form-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px 18px;}
@media(max-width:1100px){.form-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:640px){.form-grid{grid-template-columns:1fr;}}
.form-item{display:flex;flex-direction:column;gap:4px;}
.form-item.full{grid-column:1 / -1;}
.form-item label{font-size:13px;color:var(--muted);}
.form-item input,.form-item select{padding:8px 10px;border:1px solid var(--border);border-radius:7px;font-size:14px;background:#fff;}
.form-item .hint{font-size:12px;color:var(--muted);}
.form-item input,.form-item select{width:100%;box-sizing:border-box;transition:border-color .15s,box-shadow .15s;}
.form-item input:focus,.form-item select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(43,140,212,.12);}
.combo-custom{display:none;width:100%;margin-top:6px;padding:9px 11px;border:1px solid var(--border);border-radius:7px;font-size:14px;background:#fff;box-sizing:border-box;}
/* 系统设置：课程 + 成本价 行 */
.course-row{display:flex;gap:8px;align-items:center;margin-bottom:8px;}
.course-row input[name="course_name[]"]{flex:1;min-width:0;padding:8px 10px;border:1px solid var(--border);border-radius:7px;font-size:14px;background:#fff;box-sizing:border-box;}
.course-row input[name="course_cost[]"]{flex:0 0 150px;width:150px;padding:8px 10px;border:1px solid var(--border);border-radius:7px;font-size:14px;background:#fff;box-sizing:border-box;}
.course-row .row-del{flex:0 0 auto;padding:8px 12px;}

/* ============ 系统设置：卡片化布局 ============ */
.settings-panel{max-width:1000px;}
.cfg-card{background:#fafbfc;border:1px solid var(--border);border-radius:10px;padding:16px;margin-bottom:16px;}
.cfg-head{display:flex;align-items:baseline;gap:10px;margin-bottom:10px;flex-wrap:wrap;}
.cfg-title{font-size:15px;font-weight:600;color:var(--text);}
.cfg-sub{font-size:12px;color:var(--muted);}
.cfg-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:16px;}
.cfg-grid .cfg-card{margin-bottom:0;}
.course-list{max-height:240px;overflow:auto;margin:0 0 10px;padding-right:4px;}
.cfg-actions{display:flex;align-items:center;gap:12px;}
.cfg-textarea{width:100%;padding:9px 11px;border:1px solid var(--border);border-radius:7px;font-size:14px;font-family:inherit;resize:vertical;box-sizing:border-box;background:#fff;}
.cfg-textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(43,140,212,.12);}
.form-actions{margin-top:2px;}

/* 完成率进度条（员工管理） */
.progress{height:8px;background:#edf2f7;border-radius:5px;overflow:hidden;width:100%;max-width:120px;display:inline-block;vertical-align:middle;margin-right:6px;}
.progress-bar{height:100%;background:var(--primary);border-radius:5px;transition:width .2s;}
/* 完成率列：允许换行，避免进度条+百分比溢出到“创建时间”列造成重叠 */
.col-rate{min-width:110px;white-space:normal;}
.col-rate .progress{display:block;width:100%;max-width:120px;margin:0 0 4px;}

/* 成功提示弹窗 */
.modal-mask{position:fixed;inset:0;background:rgba(0,0,0,.45);display:flex;align-items:center;justify-content:center;z-index:1000;}
.modal{background:#fff;border-radius:12px;padding:28px 30px;width:340px;max-width:90vw;text-align:center;box-shadow:0 12px 40px rgba(0,0,0,.22);}
.modal-icon{width:54px;height:54px;border-radius:50%;background:#e6f7f1;color:#15b8a6;font-size:28px;line-height:54px;margin:0 auto 14px;}
.modal-title{font-size:18px;font-weight:600;color:var(--text);}
.modal-text{color:var(--muted);font-size:14px;margin:8px 0 20px;}
.modal-actions{display:flex;gap:10px;justify-content:center;}
.form-section{margin-bottom:16px;}
.form-section h3{font-size:14px;font-weight:600;margin:0 0 8px;padding-bottom:6px;border-bottom:1px solid var(--border);color:var(--text);}
.form-actions{margin-top:6px;display:flex;gap:10px;}
.alert{padding:11px 14px;border-radius:7px;margin-bottom:14px;font-size:13.5px;}
.alert.error{background:#fff5f5;color:#c53030;border:1px solid #fed7d7;}
.alert.ok{background:#f0fff4;color:#276749;border:1px solid #c6f6d5;}
.alert.info{background:#ebf8ff;color:#2b6cb0;border:1px solid #bee3f8;}
.login-wrap{max-width:380px;margin:80px auto;}
.login-wrap .panel{padding:26px;}
.login-wrap h2{text-align:center;}
.tag{display:inline-block;padding:2px 9px;border-radius:20px;font-size:12px;background:#edf2f7;color:#4a5568;}
.tag.green{background:#c6f6d5;color:#276749;}
.tag.amber{background:#feebc8;color:#c05621;}
.tag.blue{background:#bee3f8;color:#2b6cb0;}
.muted{color:var(--muted);}
small{color:var(--muted);}

/* ============ 移动端适配（≤760px） ============ */
@media(max-width:760px){
  /* 顶栏：品牌 + 用户在一行，导航整行横向滚动 */
  .topbar{flex-wrap:wrap;height:auto;padding:8px 12px;gap:6px 12px;}
  .brand{flex:1 1 auto;font-size:16px;}
  .userbox{flex:0 0 auto;order:2;}
  .nav{order:3;flex-basis:100%;flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch;}
  .nav-link{white-space:nowrap;}

  /* 容器留白收窄 */
  .container{margin:14px auto;padding:0 12px;}

  /* 工具栏整体竖向堆叠，控件占满宽度 */
  .toolbar{flex-direction:column;align-items:stretch;}
  .search-bar{min-width:0;}
  .search-row{flex-direction:column;align-items:stretch;}
  .search-row input[name="q"]{min-width:0;}
  .search-row .btn{flex:0 0 auto;}
  .date-range{flex-wrap:wrap;}
  .filter-row{flex-direction:column;align-items:stretch;}
  .filter-sel{min-width:0;width:100%;}
  .actions{flex-direction:column;align-items:stretch;}
  .actions .btn{text-align:center;}

  /* 批量工具栏竖向堆叠 */
  .batch-bar{flex-direction:column;align-items:stretch;}

  /* 系统设置课程行竖向堆叠 */
  .course-row{flex-direction:column;align-items:stretch;}
  .course-row input[name="course_name[]"],.course-row input[name="course_cost[]"]{width:100%;flex:1 1 auto;}
  .course-row .row-del{width:100%;text-align:center;}
  .batch-bar select{width:100%;}

  /* 系统设置：三列网格在窄屏堆叠为单列 */
  .cfg-grid{grid-template-columns:1fr;}
  .settings-panel{max-width:100%;}
  .course-list{max-height:200px;}

  /* 表单网格单列（与 640 断点一致，保证窄屏无横向挤压） */
  .form-grid{grid-template-columns:1fr;}
  .form-item input,.form-item select{padding:11px 12px;}
  .btn{padding:11px 16px;}

  /* 表格 → 卡片：表头隐藏，每行变为一张卡片，字段以「标签: 值」堆叠 */
  table,tbody,tr,td{display:block;width:100%;}
  thead{display:none;}
  table{border:none;font-size:13px;}
  tr{background:#fff;border:1px solid var(--border);border-radius:10px;margin-bottom:12px;padding:4px 12px;
     box-shadow:0 1px 3px rgba(0,0,0,.04);}
  tbody tr:hover{background:#fff;}
  tbody tr.row-settled{background:#f0fff7;}
  tbody tr.row-settled:hover{background:#e3fbf2;}
  td{display:flex;justify-content:space-between;align-items:center;gap:12px;
     border:none;border-bottom:1px solid #f1f5f9;padding:9px 0;white-space:normal;text-align:right;}
  td:last-child{border-bottom:none;}
  td::before{content:attr(data-label);flex:0 0 auto;margin-right:12px;text-align:left;
     color:var(--muted);font-size:12px;font-weight:600;}
  /* 勾选列：顶部「选择」标识 */
  td.col-check{width:auto;padding:10px 0;justify-content:flex-start;}
  td.col-check::before{content:"选择";}
  /* 操作列：标签 + 左对齐按钮 */
  td.row-actions{justify-content:flex-start;flex-wrap:wrap;gap:4px 14px;}
  td.row-actions::before{content:"操作";}
  /* 暂无数据行 */
  td[colspan]{display:block;text-align:center;}
  td[colspan]::before{display:none;}
}

/* ============ 超小屏（≤420px）进一步收窄 ============ */
@media(max-width:420px){
  .brand{font-size:15px;}
  .container{margin:10px auto;padding:0 10px;}
  .panel{padding:14px;}
  .modal{width:300px;padding:22px 18px;}
}