@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Inter','PingFang SC','Microsoft YaHei',sans-serif;background:#f0f5ff;color:#333;}
#app{display:flex;flex-direction:column;height:100vh;overflow:hidden}
.top-bar{display:flex;justify-content:space-between;align-items:center;padding:12px 28px;background:linear-gradient(135deg,#0a1a3a 0%,#15366e 100%);color:#fff;flex-shrink:0;box-shadow:0 2px 12px rgba(0,0,0,.15)}
.top-left{display:flex;align-items:center;gap:14px}
.top-left h1{font-size:20px;font-weight:600;background:linear-gradient(90deg,#fff,#64b5f6);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.top-sub{font-size:12px;color:rgba(255,255,255,.65)}
.top-right{display:flex;align-items:center;gap:10px}
.time-badge{font-size:13px;background:rgba(255,255,255,.1);padding:5px 14px;border-radius:20px;color:rgba(255,255,255,.9)}
.btn{padding:6px 18px;border:1px solid rgba(255,255,255,.3);border-radius:6px;cursor:pointer;background:transparent;color:rgba(255,255,255,.85);font-size:13px;transition:all .25s}
.btn:hover{background:rgba(255,255,255,.12);color:#fff}
.btn:disabled{opacity:.4;cursor:not-allowed}
.btn-primary{background:linear-gradient(135deg,#1890ff,#096dd9);border:none;border-radius:6px;cursor:pointer;color:#fff;font-size:13px;padding:6px 18px;transition:all .25s;box-shadow:0 2px 8px rgba(24,144,255,.3)}
.btn-primary:hover{opacity:.9;transform:translateY(-1px)}
.btn-primary:disabled{opacity:.4;cursor:not-allowed}
.app-body{display:flex;flex:1;overflow:hidden}
.side-nav{width:80px;min-width:80px;background:#0a1a3a;display:flex;flex-direction:column;align-items:center;padding:16px 0;gap:4px;box-shadow:2px 0 12px rgba(0,0,0,.08)}
.nav-item{width:64px;padding:12px 0;border:none;border-radius:10px;background:transparent;color:rgba(255,255,255,.5);cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:4px;transition:all .25s;position:relative}
.nav-item span{font-size:11px;font-weight:500}
.nav-item:hover{background:rgba(255,255,255,.08);color:#fff}
.nav-item.act{background:rgba(24,144,255,.15);color:#64b5f6}
.nav-item.act::before{content:'';position:absolute;left:0;top:6px;bottom:6px;width:3px;background:#1890ff;border-radius:0 3px 3px 0}
.side-status{margin-top:auto;text-align:center;padding:12px 0;color:rgba(255,255,255,.6)}
.sd-dot{width:10px;height:10px;border-radius:50%;margin:0 auto 4px}
.sd-dot.on{background:#52c41a;box-shadow:0 0 8px #52c41a;animation:sd-pulse 2s infinite}
@keyframes sd-pulse{0%,100%{box-shadow:0 0 4px #52c41a}50%{box-shadow:0 0 14px #52c41a}}
.sd-num{font-size:14px;font-weight:600}
.sd-num small{font-size:10px;color:rgba(255,255,255,.4)}
.main-content{flex:1;padding:18px 22px;overflow-y:auto;background:#f0f5ff}
.kpi-row{display:flex;gap:14px;margin-bottom:14px;flex-wrap:wrap}
.kpi-card{flex:1;min-width:130px;background:#fff;border-radius:10px;padding:16px;display:flex;align-items:center;gap:14px;box-shadow:0 1px 4px rgba(0,0,0,.06);transition:all .3s}
.kpi-card:hover{transform:translateY(-2px);box-shadow:0 4px 16px rgba(24,144,255,.12)}
.kpi-icon{width:44px;height:44px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0}
.kpi-val{font-size:24px;font-weight:700;line-height:1.2}
.kpi-lbl{font-size:13px;color:#666}
.kpi-sub{font-size:11px;color:#999;margin-top:1px}
.row2{display:flex;gap:14px;margin-bottom:14px;flex-wrap:wrap}
.card-2col{flex:1;min-width:240px;background:#fff;border-radius:10px;padding:16px;box-shadow:0 1px 4px rgba(0,0,0,.06)}
.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.card-header h3{font-size:14px;color:#1a1a2e;font-weight:600}
.badge{background:#f0f5ff;padding:2px 10px;border-radius:10px;font-size:11px;color:#1890ff}
.th-grid{display:flex;gap:12px;flex-wrap:wrap}
.th-item{flex:1;min-width:100px;padding:12px;background:#f8fbff;border-radius:8px}
.th-lbl{font-size:11px;color:#999;display:block}
.th-val{font-size:22px;font-weight:700;color:#1a1a2e;display:block;margin:4px 0}
.th-rng{font-size:11px;color:#999}
.pie-wrap{display:flex;align-items:center;gap:16px}
.pie-legend{flex:1;font-size:12px;color:#666}
.pie-legend .dot{width:8px;height:8px;border-radius:50%;display:inline-block;margin-right:6px;vertical-align:middle}
.pie-legend div{margin-bottom:6px}
.alert-scroll{max-height:140px;overflow-y:auto}
.alert-item{display:flex;align-items:center;gap:6px;padding:6px 0;border-bottom:1px solid #f5f5f5;font-size:12px}
.a-type{padding:1px 6px;border-radius:4px;font-size:10px;font-weight:600;white-space:nowrap}
.a-type.smoke{background:#fff1f0;color:#ff4d4f}.a-type.power{background:#fff7e6;color:#faad14}
.a-type.temp{background:#fff1f0;color:#ff6b6b}.a-type.humi{background:#e6f7ff;color:#1890ff}
.a-type.offline{background:#f5f5f5;color:#999}
.a-msg{flex:1;color:#666;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.a-time{color:#999;font-size:11px;white-space:nowrap}
.no-data{text-align:center;padding:20px;color:#999;font-size:12px}
.panel{background:#fff;border-radius:10px;padding:16px;box-shadow:0 1px 4px rgba(0,0,0,.06);margin-bottom:14px}
.heatmap{position:relative;height:160px;border-radius:6px;overflow:hidden}
.heatmap-bg{position:absolute;top:-2px;left:-2px;width:calc(100%+4px);height:calc(100%+4px);border:none;pointer-events:none;opacity:.7}
.dot{width:14px;height:14px;border-radius:50%;cursor:pointer;transition:all .25s}
.dot:hover{transform:translate(-50%,-50%)scale(1.6);z-index:10}
.search-inp{padding:5px 10px;border:1px solid #e8e8e8;border-radius:6px;font-size:12px;width:160px;outline:none}
.search-inp:focus{border-color:#1890ff}
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:13px}
th{padding:8px 6px;text-align:left;border-bottom:2px solid #e8f0ff;font-weight:600;font-size:11px;color:#666;text-transform:uppercase;white-space:nowrap}
td{padding:7px 6px;border-bottom:1px solid #f0f5ff;white-space:nowrap}
tr:hover td{background:#f8fbff}
.mono{font-family:'SF Mono',monospace;font-size:12px;color:#888}
.stat-on{color:#52c41a;font-size:12px;font-weight:600}
.ok{color:#52c41a}.dng{color:#ff4d4f}.dim{color:#999}
.lnk{background:none;border:none;color:#1890ff;cursor:pointer;font-size:12px;padding:4px 8px;border-radius:4px;transition:all .2s}
.lnk:hover{background:rgba(24,144,255,.08)}
.lnk.act{background:rgba(24,144,255,.12);color:#096dd9;font-weight:600}
.chart-box{margin-top:12px;padding:12px;background:#f8fbff;border-radius:8px}
.chart-area{background:#fff;border-radius:6px;padding:6px}
.overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.5);display:flex;align-items:center;justify-content:center;z-index:1000;backdrop-filter:blur(3px)}
.modal-card{background:#fff;border-radius:12px;padding:20px;max-width:720px;width:92%;max-height:85vh;overflow-y:auto;box-shadow:0 8px 40px rgba(0,0,0,.15)}
.modal-hd{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:12px}
.no-loc{text-align:center;padding:60px;color:#999}
.export-sec{display:flex;justify-content:center;padding-top:60px}
.export-box{text-align:center;background:#fff;padding:50px 80px;border-radius:12px;box-shadow:0 1px 4px rgba(0,0,0,.06)}
.export-box h2{color:#1a1a2e;margin-bottom:8px;font-size:20px}
.export-box p{color:#999;margin-bottom:24px}
.btn-lg{padding:12px 44px;font-size:15px}
.export-info{margin-top:16px;color:#999;font-size:12px}