:root{
  --brand:#1668dc; --brand-dark:#0f4fa8; --brand-soft:#e8f1fd;
  --bg:#f4f6fa; --card:#ffffff; --line:#e3e8f0;
  --text:#1f2937; --text-2:#5b6676; --text-3:#8a94a6;
  --ok:#12a150; --warn:#e8912a; --danger:#d93b3b; --danger-soft:#fdecec;
  --radius:12px; --shadow:0 1px 3px rgba(16,40,80,.06),0 6px 18px rgba(16,40,80,.06);
}
*{box-sizing:border-box}
/* 关键：class 上的 display 会覆盖 hidden 属性的 UA 样式，导致弹窗/主界面无法隐藏 */
[hidden]{display:none!important}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;
  background:var(--bg); color:var(--text); font-size:14px; line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:600}
a{color:inherit;text-decoration:none}
input,select,textarea,button{font-family:inherit;font-size:14px}

/* ---------- 登录 ---------- */
.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px 16px;
  background:linear-gradient(135deg,#e8f1fd 0%,#f4f6fa 45%,#eaf3ee 100%);}
.auth-card{width:100%;max-width:440px;background:var(--card);border-radius:16px;box-shadow:var(--shadow);padding:28px 26px}
.auth-brand{text-align:center;margin-bottom:20px}
.auth-logo{width:52px;height:52px;margin:0 auto 10px;border-radius:14px;background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;letter-spacing:.5px}
.auth-brand h1{font-size:20px}
.auth-brand p{margin:4px 0 0;color:var(--text-3);font-size:12px}
.auth-tabs{display:flex;gap:6px;background:var(--bg);padding:4px;border-radius:10px;margin-bottom:18px}
.tab-btn{flex:1;border:0;background:transparent;padding:8px;border-radius:8px;cursor:pointer;color:var(--text-2);font-weight:500}
.tab-btn.active{background:#fff;color:var(--brand);box-shadow:0 1px 2px rgba(0,0,0,.06)}
.auth-pane{display:none}.auth-pane.active{display:block}
.field{display:block;margin-bottom:12px}
.field>span{display:block;font-size:12px;color:var(--text-2);margin-bottom:5px}
.field>span i{color:var(--danger);font-style:normal}
.field input,.field select,.field textarea{
  width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--text);outline:none}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(22,104,220,.12)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.btn-primary{width:100%;padding:10px;border:0;border-radius:9px;background:var(--brand);color:#fff;font-weight:600;cursor:pointer}
.btn-primary:hover{background:var(--brand-dark)}
.btn-primary:disabled{opacity:.6;cursor:not-allowed}
.auth-tip{margin:10px 0 0;font-size:12px;color:var(--text-3);text-align:center}
.auth-msg{margin-top:12px;font-size:13px;min-height:20px;text-align:center;color:var(--danger)}

/* ---------- 布局 ---------- */
.app-wrap{min-height:100vh;display:flex;flex-direction:column}
.topbar{height:56px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;
  gap:12px;padding:0 16px;position:sticky;top:0;z-index:30}
.topbar-title{font-weight:600;font-size:15px}
.topbar-user{margin-left:auto;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-2)}
.nav-toggle{display:none;border:0;background:transparent;font-size:20px;cursor:pointer;color:var(--text)}
.app-body{flex:1;display:flex;min-height:0}
.sidebar{width:190px;background:#fff;border-right:1px solid var(--line);padding:14px 10px;flex-shrink:0}
.nav-item{display:flex;align-items:center;gap:9px;padding:9px 12px;border-radius:9px;color:var(--text-2);font-size:14px;margin-bottom:2px}
.nav-item:hover{background:var(--bg)}
.nav-item.active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.view{flex:1;padding:20px;min-width:0;overflow-x:hidden}

/* ---------- 通用组件 ---------- */
.page-head{display:flex;align-items:flex-end;gap:12px;flex-wrap:wrap;margin-bottom:16px}
.page-head h2{font-size:19px}
.page-head .desc{color:var(--text-3);font-size:12px;margin-top:2px}
.page-actions{margin-left:auto;display:flex;gap:8px;flex-wrap:wrap}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);margin-bottom:16px}
.card h3{font-size:15px;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.card h3 .sub{font-weight:400;font-size:12px;color:var(--text-3)}
.btn{padding:7px 14px;border:1px solid var(--line);background:#fff;border-radius:8px;cursor:pointer;color:var(--text)}
.btn:hover{border-color:var(--brand);color:var(--brand)}
.btn-brand{background:var(--brand);border-color:var(--brand);color:#fff}
.btn-brand:hover{background:var(--brand-dark);color:#fff}
.btn-danger{color:var(--danger);border-color:#f3c9c9}
.btn-danger:hover{background:var(--danger-soft);border-color:var(--danger);color:var(--danger)}
.btn-sm{padding:4px 10px;font-size:12px;border-radius:7px}
.btn-ghost{border:0;background:transparent;color:var(--text-2);cursor:pointer}
.btn-ghost:hover{color:var(--danger)}
.grid-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;margin-bottom:16px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;box-shadow:var(--shadow)}
.stat .label{font-size:12px;color:var(--text-3)}
.stat .value{font-size:26px;font-weight:700;margin-top:4px;line-height:1.2}
.stat .unit{font-size:12px;color:var(--text-3);font-weight:400;margin-left:3px}
.stat.blue .value{color:var(--brand)} .stat.green .value{color:var(--ok)}
.stat.orange .value{color:var(--warn)} .stat.red .value{color:var(--danger)}

table.grid{width:100%;border-collapse:collapse;font-size:13px}
table.grid th,table.grid td{padding:9px 10px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap}
table.grid th{background:#fafbfd;color:var(--text-2);font-weight:600;font-size:12px;position:sticky;top:0;z-index:1}
table.grid tbody tr:hover{background:#fafbfd}
.table-scroll{overflow:auto;max-height:60vh;border:1px solid var(--line);border-radius:10px;background:#fff}
.badge{display:inline-block;padding:1px 8px;border-radius:20px;font-size:11px;background:var(--brand-soft);color:var(--brand)}
.badge.warn{background:#fdf2e3;color:var(--warn)}
.badge.danger{background:var(--danger-soft);color:var(--danger)}
.badge.ok{background:#e7f6ec;color:var(--ok)}
.badge.grey{background:#eef0f4;color:var(--text-2)}
.tag{display:inline-block;padding:1px 8px;border-radius:6px;font-size:11px;background:var(--brand-soft);color:var(--brand);margin-right:4px}
.card-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
.card-head h3{margin:0;font-size:15px}
.empty{padding:34px;text-align:center;color:var(--text-3);font-size:13px}
.toolbar{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-bottom:12px}
.toolbar input,.toolbar select{padding:7px 10px;border:1px solid var(--line);border-radius:8px;background:#fff;outline:none}
.toolbar input:focus,.toolbar select:focus{border-color:var(--brand)}
.chart-box{height:280px}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.hint{font-size:12px;color:var(--text-3);margin-top:8px;line-height:1.7}
.hint b{color:var(--text-2)}
.drop-zone{border:2px dashed var(--line);border-radius:12px;padding:22px;text-align:center;background:#fafbfd;cursor:pointer}
.drop-zone:hover,.drop-zone.over{border-color:var(--brand);background:var(--brand-soft)}
.drop-zone .big{font-size:15px;font-weight:600;margin-bottom:4px}
.file-item{display:flex;align-items:center;gap:10px;padding:10px;border:1px solid var(--line);border-radius:10px;margin-top:10px;background:#fff}
.file-item .fname{font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.file-item .fmeta{font-size:12px;color:var(--text-3)}
.toast{position:fixed;left:50%;bottom:36px;transform:translateX(-50%) translateY(20px);background:#1f2937;color:#fff;
  padding:10px 18px;border-radius:9px;font-size:13px;opacity:0;pointer-events:none;transition:.25s;z-index:200;max-width:90vw}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.err{background:var(--danger)} .toast.ok{background:var(--ok)}
.toast.warn{background:var(--warn)}
.modal{position:fixed;inset:0;background:rgba(20,30,50,.45);display:flex;align-items:center;justify-content:center;padding:16px;z-index:100}
.modal-box{background:#fff;border-radius:14px;width:100%;max-width:560px;max-height:88vh;display:flex;flex-direction:column}
.modal-head{display:flex;align-items:center;padding:14px 18px;border-bottom:1px solid var(--line)}
.modal-head h3{font-size:16px}
.modal-x{margin-left:auto;border:0;background:transparent;font-size:22px;line-height:1;cursor:pointer;color:var(--text-3)}
.modal-body{padding:16px 18px;overflow:auto}
.modal-foot{padding:12px 18px;border-top:1px solid var(--line);display:flex;gap:8px;justify-content:flex-end}
.inline-form{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.inline-form .full{grid-column:1/-1}
.mobile-only{display:none}
tr.row-warn td{background:#fffaf0}
tr.row-off td{background:#f7f8fa;color:var(--text-3)}
tr.row-off td b{color:var(--text-3);font-weight:600}
.table-scroll select{padding:3px 6px;font-size:12px}

/* ---------- 响应式 ---------- */
@media (max-width:900px){
  .two-col{grid-template-columns:1fr}
}
@media (max-width:720px){
  .nav-toggle{display:block}
  .sidebar{position:fixed;left:0;top:56px;bottom:0;width:210px;z-index:40;transform:translateX(-100%);
    transition:transform .22s;box-shadow:2px 0 12px rgba(0,0,0,.08)}
  .sidebar.open{transform:translateX(0)}
  .view{padding:14px 12px}
  .topbar-title{font-size:14px}
  .topbar-user #whoami{max-width:110px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .inline-form{grid-template-columns:1fr}
  .field-row{grid-template-columns:1fr}
  .grid-stats{grid-template-columns:1fr 1fr}
  .stat .value{font-size:22px}
  .page-actions{width:100%}
  .page-actions .btn{flex:1}
}
@media print{
  .topbar,.sidebar,.page-actions,.toolbar{display:none!important}
}