:root{
  --bg:#0f1420; --panel:#1a2336; --panel-2:#161e30; --border:#27314a;
  --side:#121829; --side-active:#2563eb; --brand:#3b82f6;
  --text:#e5e7eb; --muted:#94a3b8; --ok:#22c55e; --warn:#f59e0b; --danger:#ef4444;
  --topbar-h:56px; --side-w:240px; --radius:12px;
  --hover:rgba(255,255,255,.05); --hover-soft:rgba(255,255,255,.03);
}
/* 浅色主题 */
html.light{
  --bg:#f3f5f9; --panel:#ffffff; --panel-2:#f1f4f9; --border:#e2e8f0;
  --side:#ffffff; --side-active:#2563eb; --brand:#2563eb;
  --text:#1e293b; --muted:#64748b; --ok:#16a34a; --warn:#d97706; --danger:#dc2626;
  --hover:rgba(37,99,235,.08); --hover-soft:rgba(15,23,42,.03);
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{
  background:var(--bg); color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;
  font-size:14px;
}
a{color:inherit;text-decoration:none}
svg{display:inline-block;vertical-align:middle}

/* 顶栏 */
.topbar{
  position:fixed;top:0;left:0;right:0;height:var(--topbar-h);z-index:30;
  display:flex;align-items:center;gap:14px;padding:0 18px;
  background:var(--side);border-bottom:1px solid var(--border);
}
.topbar-toggle{background:none;border:0;color:var(--muted);cursor:pointer;padding:4px;border-radius:8px}
.topbar-toggle:hover{color:var(--text);background:var(--hover)}
.topbar-title{display:flex;align-items:center;gap:8px;color:var(--brand);font-size:18px;font-weight:600}
.topbar-right{margin-left:auto;display:flex;align-items:center;gap:16px;color:var(--muted)}
.topbar-user{color:var(--text)}
.lang-badge{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--border);padding:4px 10px;border-radius:20px;font-size:12px}
.topbar-logout{color:var(--danger);display:inline-flex}

/* 布局 */
.layout{display:flex;padding-top:var(--topbar-h);min-height:100vh}
.sidebar{
  width:var(--side-w);flex:0 0 var(--side-w);background:var(--side);
  border-right:1px solid var(--border);min-height:calc(100vh - var(--topbar-h));
  position:sticky;top:var(--topbar-h);height:calc(100vh - var(--topbar-h));
  display:flex;flex-direction:column;padding:16px 12px;
}
.sidebar.collapsed{display:none}
.brand{display:flex;align-items:center;gap:10px;padding:6px 8px 16px}
.brand-mark{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:9px;background:var(--brand);color:#fff;font-weight:800}
.brand-text{font-size:13px;color:var(--muted)}
.nav-group-title{color:var(--brand);font-size:12px;font-weight:700;padding:10px 10px 6px;border-top:1px solid var(--border);margin-top:4px}
.nav-item{display:flex;align-items:center;gap:10px;padding:11px 12px;border-radius:9px;color:var(--text);margin-bottom:2px}
.nav-item:hover{background:var(--hover)}
.nav-item.active{background:var(--side-active);color:#fff}
.sidebar-footer{margin-top:auto;display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:12px;padding:10px;border-top:1px solid var(--border)}
.theme-toggle{display:inline-flex;align-items:center;gap:7px;background:none;border:1px solid var(--border);color:var(--muted);font-size:12px;padding:6px 12px;border-radius:20px;cursor:pointer}
.theme-toggle:hover{color:var(--text);border-color:var(--brand)}
.theme-toggle .theme-ico{display:inline-flex}

/* 内容区 */
.content{flex:1;min-width:0;padding:22px 26px}
.card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px;margin-bottom:18px}
.card-title{color:var(--brand);font-size:16px;font-weight:600;margin:0 0 14px;display:flex;align-items:center;justify-content:space-between}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px}
.stat{display:flex;flex-direction:column;gap:6px}
.stat .num{font-size:34px;font-weight:800;line-height:1}
.stat .label{color:var(--muted);font-size:12px}
.progress{height:4px;background:var(--border);border-radius:4px;overflow:hidden;margin-top:8px}
.progress > i{display:block;height:100%;background:var(--brand)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;gap:6px;background:var(--panel-2);color:var(--text);border:1px solid var(--border);padding:8px 14px;border-radius:9px;cursor:pointer;font-size:13px}
.btn:hover{border-color:var(--brand)}
.btn-primary{background:var(--brand);border-color:var(--brand);color:#fff}
.btn-primary:hover{background:#2563eb}
.btn-danger{background:var(--danger);border-color:var(--danger);color:#fff}
.btn-icon{padding:8px;border-radius:9px}
.btn-sm{padding:5px 10px;font-size:12px}
.btn[disabled]{opacity:.5;cursor:not-allowed}

/* 表单控件 */
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.field label{color:var(--muted);font-size:12px}
input,select,textarea{
  background:var(--panel-2);border:1px solid var(--border);border-radius:9px;color:var(--text);
  padding:9px 12px;font-size:13px;outline:none;width:100%;
}
input:focus,select:focus,textarea:focus{border-color:var(--brand)}

/* 工具条 */
.toolbar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:14px}
.toolbar .grow{flex:1}
.toolbar select,.toolbar input{width:auto;min-width:160px}

/* 表格 */
.table-wrap{overflow:auto;border:1px solid var(--border);border-radius:var(--radius)}
table{width:100%;border-collapse:collapse;font-size:13px}
thead th{background:var(--panel-2);color:var(--brand);text-align:left;padding:12px 14px;white-space:nowrap;border-bottom:1px solid var(--border);cursor:default}
thead th.sortable{cursor:pointer;user-select:none}
thead th.sortable:hover{color:var(--text)}
thead th.sortable.sorted{color:var(--brand)}
thead th.sortable.sorted::after{content:" ▲";font-size:10px}
thead th.sortable.sorted[data-dir="desc"]::after{content:" ▼"}
tbody td{padding:12px 14px;border-bottom:1px solid var(--border);white-space:nowrap}
tbody tr:hover{background:var(--hover-soft)}
tbody tr:last-child td{border-bottom:0}
.num-red{color:var(--danger);font-weight:700}

/* 状态标签 */
.tag{display:inline-block;padding:3px 9px;border-radius:6px;font-size:12px;font-weight:600}
.tag.ok{background:rgba(34,197,94,.15);color:var(--ok)}
.tag.danger{background:rgba(239,68,68,.15);color:var(--danger)}
.tag.warn{background:rgba(245,158,11,.15);color:var(--warn)}
.tag.muted{background:rgba(148,163,184,.15);color:var(--muted)}

/* 灯号圆点 */
.dot{display:inline-block;width:12px;height:12px;border-radius:50%}
.dot.green{background:var(--ok)} .dot.yellow{background:var(--warn)} .dot.red{background:var(--danger)}

/* Tabs */
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--border);margin-bottom:18px}
.tab{padding:12px 22px;color:var(--muted);cursor:pointer;border-bottom:2px solid transparent}
.tab.active{color:var(--brand);border-bottom-color:var(--brand)}
.tab-pane{display:none}
.tab-pane.active{display:block}

/* 分页 */
.pagination{display:flex;gap:6px;align-items:center;margin-top:16px;flex-wrap:wrap}
.pagination .pg{min-width:34px;height:34px;display:inline-grid;place-items:center;border:1px solid var(--border);border-radius:8px;cursor:pointer;padding:0 8px}
.pagination .pg.active{background:var(--brand);border-color:var(--brand);color:#fff}
.pagination .pg[disabled]{opacity:.4;cursor:not-allowed}

/* 空态 */
.empty{display:flex;flex-direction:column;align-items:center;gap:10px;color:var(--muted);padding:60px 0}

/* 弹窗 */
.modal-mask{position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:50;display:none;align-items:flex-start;justify-content:center;padding:60px 16px;overflow:auto}
.modal-mask.show{display:flex}
.modal{background:var(--panel);border:1px solid var(--border);border-radius:14px;width:100%;max-width:520px;padding:22px}
.modal-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}
.modal-head h2{font-size:18px;margin:0;color:var(--text)}
.modal-desc{color:var(--muted);font-size:12px;margin-bottom:14px}
.modal-x{background:none;border:0;color:var(--muted);cursor:pointer}
.kv{display:flex;flex-direction:column;gap:2px;margin-bottom:12px}
.kv .k{color:var(--muted);font-size:12px}
.switch{display:inline-flex;align-items:center;gap:8px;cursor:pointer}
.switch input{width:auto}

/* 告警地区勾选网格 */
.region-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(78px,1fr));gap:8px;max-height:220px;overflow:auto;padding:10px;border:1px solid var(--border);border-radius:8px;background:var(--hover-soft)}
.region-chk{display:flex;align-items:center;gap:6px;font-size:13px;cursor:pointer;white-space:nowrap}
.region-chk input{width:auto}

/* 登录页 */
.login-body{background:#0b0f1a}
.login-wrap{min-height:100vh;display:flex}
.login-left{flex:1;position:relative;overflow:hidden;display:none;
  background:radial-gradient(1200px 700px at 25% 30%,#1e2c54,#0b0f1a 70%)}
.login-left .blob{position:absolute;border-radius:50%;filter:blur(60px);opacity:.55;mix-blend-mode:screen}
.blob-1{width:420px;height:420px;background:#2563eb;top:-80px;left:-60px;animation:float1 11s ease-in-out infinite}
.blob-2{width:360px;height:360px;background:#7c3aed;bottom:-100px;left:120px;animation:float2 13s ease-in-out infinite}
.blob-3{width:300px;height:300px;background:#0ea5e9;top:140px;right:-60px;animation:float1 9s ease-in-out infinite reverse}
@keyframes float1{0%,100%{transform:translate(0,0)}50%{transform:translate(40px,-30px)}}
@keyframes float2{0%,100%{transform:translate(0,0)}50%{transform:translate(-30px,40px)}}
.login-hero{position:relative;z-index:2;max-width:460px;margin:auto;padding:60px;color:#e5e7eb;width:100%}
.login-brand{display:flex;align-items:center;gap:12px;font-size:16px;color:#cbd5e1;margin-bottom:48px}
.login-brand-mark{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:11px;background:#2563eb;color:#fff;font-weight:800}
.login-hero-title{font-size:38px;line-height:1.25;margin:0 0 16px;font-weight:800;
  background:linear-gradient(90deg,#fff,#93c5fd);-webkit-background-clip:text;background-clip:text;color:transparent}
.login-hero-sub{color:#94a3b8;font-size:15px;margin:0 0 28px}
.login-feats{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:14px}
.login-feats li{display:flex;align-items:center;gap:10px;color:#cbd5e1;font-size:14px}
.login-radar{position:relative;width:120px;height:120px;margin-top:50px}
.login-radar span{position:absolute;inset:0;margin:auto;width:18px;height:18px;border-radius:50%;
  background:rgba(59,130,246,.6);animation:radar 2.6s ease-out infinite}
.login-radar span:nth-child(2){animation-delay:.9s}
.login-radar span:nth-child(3){animation-delay:1.8s}
@keyframes radar{0%{transform:scale(.4);opacity:.9}100%{transform:scale(4.5);opacity:0}}
.login-right{width:460px;max-width:100%;margin:auto;padding:48px 44px}
.login-card h1{font-size:34px;margin:0 0 8px;color:#f8fafc}
.login-card .sub{color:#94a3b8;margin-bottom:30px}
.login-card .field label{color:#94a3b8}
.login-card input{background:#161e30;border-color:#27314a;color:#e5e7eb;padding:12px 14px}
.login-card .btn-primary{width:100%;justify-content:center;padding:13px;border-radius:10px;font-size:15px;margin-top:10px}
.login-err{color:var(--danger);margin-top:12px;min-height:18px;font-size:13px}
@media(min-width:900px){.login-left{display:block}}

.countdown{color:var(--muted);display:inline-flex;align-items:center;gap:8px}
.flex-between{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.row-icons{display:inline-flex;gap:8px;align-items:center}
.icon-btn{background:none;border:0;color:var(--brand);cursor:pointer;padding:4px}
.icon-btn.danger{color:var(--danger)}
.spinbox{display:inline-flex;align-items:center;gap:6px}
.spinbox input{width:70px;text-align:center}