:root{--bg:#f4f7fb;--panel:#fff;--ink:#17243b;--muted:#6d7b91;--line:#dce4ef;--blue:#246bfe;--cyan:#13a8a8;--red:#e75252;--amber:#d08a00;--shadow:0 10px 35px rgba(26,48,83,.08)}

*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.45 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
.hidden{display:none!important}
button,input,select{font:inherit}
button{border:0;border-radius:8px;background:var(--blue);color:#fff;padding:9px 15px;cursor:pointer}
button:hover{filter:brightness(.96)}
.login-shell{min-height:100vh;display:grid;place-items:center;background:radial-gradient(circle at 20% 20%,#e1ebff,transparent 38%),linear-gradient(135deg,#f6f8fc,#eaf0fa)}
.login-card{width:min(390px,90vw);padding:36px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}
.brand-mark,.brand span{display:inline-grid;place-items:center;width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--blue),#6946ee);color:#fff;font-weight:800}
.login-card h1{margin:18px 0 4px}
.login-card p{color:var(--muted);margin:0 0 24px}
.login-card label{display:block;margin:14px 0;color:var(--muted)}
.login-card input{display:block;width:100%;margin-top:6px;padding:11px;border:1px solid var(--line);border-radius:8px}
.login-card button{width:100%;margin-top:10px}
.error{min-height:20px;color:var(--red);padding-top:10px}
header{height:62px;padding:0 22px;display:flex;align-items:center;background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:4}
.brand{font-weight:750;font-size:17px;display:flex;gap:10px;align-items:center}
.brand span{width:30px;height:30px;border-radius:8px}
nav{display:flex;align-self:stretch;margin-left:45px;gap:4px}
.nav{border-radius:0;background:transparent;color:var(--muted);border-bottom:3px solid transparent}
.nav.active{color:var(--blue);border-color:var(--blue)}
.quiet{margin-left:auto;background:#eef2f8;color:var(--ink)}
.workspace{display:grid;grid-template-columns:280px minmax(0,1fr);height:calc(100vh - 62px);min-height:0}
aside{min-height:0;background:#fff;border-right:1px solid var(--line);padding:18px 14px;overflow:auto}
.aside-head{display:flex;justify-content:space-between;padding:0 4px 12px}
.aside-head span{background:#eef3ff;color:var(--blue);border-radius:12px;padding:2px 8px}
#search{width:100%;padding:9px 10px;border:1px solid var(--line);border-radius:8px;margin-bottom:14px}
.gateway{margin:5px 0}
.gateway>button,.item-btn{width:100%;text-align:left;background:transparent;color:var(--ink);padding:7px 8px}
.gateway>button{font-weight:700}
.gateway>button::before{content:"▾";display:inline-block;width:17px;color:var(--muted)}
.gateway.collapsed>button::before{content:"▸"}
.gateway.collapsed .gateway-items{display:none}
.item-btn{padding-left:26px;border-left:2px solid transparent}
.item-btn:hover,.item-btn.active{background:#eef4ff;border-color:var(--blue)}
.item-btn small{display:block;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
main{min-height:0;padding:24px;overflow:auto}
.view{max-width:1500px;margin:0 auto}
.empty{height:60vh;display:grid;place-items:center;color:var(--muted);border:1px dashed #cbd5e3;border-radius:14px;background:rgba(255,255,255,.45)}
.title-row{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:18px}
.title-row h1{margin:0 0 5px;font-size:23px}
.muted{margin:0;color:var(--muted)}
.range-controls{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}
.range-controls select,.range-controls input{background:#fff;border:1px solid var(--line);border-radius:8px;padding:8px}
.notice{min-height:22px;color:var(--amber)}
.charts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.charts article{background:#fff;border:1px solid var(--line);border-radius:12px;padding:15px;box-shadow:0 5px 20px rgba(26,48,83,.04)}
.charts h2{margin:0 0 9px;font-size:15px}
.charts h2 small{color:var(--muted);font-weight:400}
.chart{height:275px;position:relative}
.chart canvas{width:100%;height:100%;display:block}
.tooltip{display:none;position:absolute;pointer-events:none;background:#17243b;color:#fff;padding:7px 9px;border-radius:6px;font-size:12px;white-space:nowrap;z-index:2}
.table-wrap{overflow:auto;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow)}
table{border-collapse:collapse;width:100%;min-width:800px}
th,td{padding:12px 14px;text-align:left;border-bottom:1px solid #e8edf4;white-space:nowrap}
th{font-size:12px;text-transform:uppercase;color:var(--muted);background:#f8fafd}
tbody tr:hover{background:#f4f8ff}
#top-body tr{cursor:pointer}
.status{display:inline-flex;align-items:center;gap:6px;font-weight:700}
.status::before{content:"";width:8px;height:8px;border-radius:50%;background:currentColor}
.online{color:#168b5b}
.delayed{color:var(--amber)}
.offline{color:var(--red)}

@media(max-width:950px){.workspace{grid-template-columns:220px minmax(0,1fr)}
.charts{grid-template-columns:1fr}
.title-row{display:block}
.range-controls{justify-content:flex-start;margin-top:14px}
main{padding:16px}
}
@media(max-width:700px){header nav{margin-left:12px}
.brand{font-size:0}
.workspace{display:block;height:auto;min-height:calc(100vh - 62px)}
aside{max-height:240px;border-bottom:1px solid var(--line)}
main{overflow:visible}
header{padding:0 10px}
.nav{padding:9px 8px}
}