*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#eef4fb;
  --panel:#ffffff;
  --panel2:#f8fbff;
  --text:#18212f;
  --muted:#708198;
  --line:#dfe7f1;
  --primary:#2563eb;
  --primary-soft:#dbeafe;
  --success:#16a34a;
  --success-soft:#dcfce7;
  --warning:#f59e0b;
  --warning-soft:#fef3c7;
  --danger:#dc2626;
  --danger-soft:#fee2e2;
  --purple:#7c3aed;
  --purple-soft:#ede9fe;
  --cyan:#0891b2;
  --cyan-soft:#cffafe;
  --shadow:0 20px 45px rgba(15,23,42,.08);
  --radius:24px;
}
body{
  font-family:'Inter',sans-serif;
  background:linear-gradient(135deg,#eef4fb 0%,#f7f9fd 45%,#edf5ff 100%);
  color:var(--text);
}
.app{display:flex;min-height:100vh}
.sidebar{
  width:280px;
  background:rgba(11,18,32,.96);
  color:#fff;
  padding:24px 18px;
  position:fixed;
  top:0;left:0;height:100vh;
  display:flex;flex-direction:column;
  border-right:1px solid rgba(255,255,255,.06);
  box-shadow:0 0 40px rgba(2,6,23,.18);
  z-index:1000;
}
.brand{
  display:flex;align-items:center;gap:14px;
  padding:12px 12px 20px;
  margin-bottom:10px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.brand-icon{
  width:54px;height:54px;border-radius:18px;
  background:linear-gradient(135deg,#2563eb,#06b6d4);
  display:flex;align-items:center;justify-content:center;
  font-size:22px;box-shadow:0 12px 30px rgba(37,99,235,.35);
}
.brand h2{font-size:18px;font-weight:800;line-height:1.2}
.brand span{color:rgba(255,255,255,.68);font-size:12px;display:block;margin-top:4px}
.nav{margin-top:12px;display:flex;flex-direction:column;gap:8px}
.nav button{
  border:none;outline:none;background:transparent;color:#d5deea;
  padding:14px 16px;border-radius:16px;font-size:15px;
  display:flex;align-items:center;gap:14px;cursor:pointer;
  transition:.25s ease;text-align:left;width:100%;font-weight:600;
}
.nav button i{width:20px;text-align:center;font-size:16px}
.nav button:hover,.nav button.active{
  background:linear-gradient(90deg,rgba(37,99,235,.22),rgba(14,165,233,.12));
  color:#fff;transform:translateX(4px);
}
.sidebar-footer{
  margin-top:auto;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.08);border-radius:20px;padding:16px;
}
.status{display:flex;align-items:center;gap:10px;margin-bottom:10px;font-size:14px;font-weight:600}
.dot{width:12px;height:12px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 4px rgba(34,197,94,.18)}
.sidebar-footer p{color:rgba(255,255,255,.7);font-size:12px;line-height:1.6}
.main{margin-left:280px;width:calc(100% - 280px);padding:28px}
.topbar{display:flex;justify-content:space-between;align-items:center;gap:18px;margin-bottom:24px;flex-wrap:wrap}
.topbar h1{font-size:30px;font-weight:800;letter-spacing:-.04em;margin-bottom:6px}
.topbar p{color:var(--muted);font-size:14px}
.top-actions{display:flex;gap:12px;flex-wrap:wrap}
.pill{
  background:rgba(255,255,255,.9);border:1px solid var(--line);box-shadow:var(--shadow);
  border-radius:16px;padding:12px 16px;display:flex;align-items:center;gap:10px;font-weight:700;color:#243142;
}
.section{display:none}
.section.active{display:block}
.grid-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;margin-bottom:22px}
.card{
  background:rgba(255,255,255,.95);border:1px solid rgba(255,255,255,.7);box-shadow:var(--shadow);
  border-radius:var(--radius);padding:20px;position:relative;overflow:hidden;
}
.card::after{
  content:'';position:absolute;right:-35px;top:-35px;width:120px;height:120px;border-radius:50%;background:rgba(255,255,255,.34);
}
.metric-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;position:relative;z-index:1}
.metric-icon{
  width:54px;height:54px;border-radius:18px;display:flex;align-items:center;justify-content:center;
  font-size:22px;box-shadow:0 10px 24px rgba(15,23,42,.08);
}
.blue{background:var(--primary-soft);color:var(--primary)}
.green{background:var(--success-soft);color:var(--success)}
.amber{background:var(--warning-soft);color:var(--warning)}
.red{background:var(--danger-soft);color:var(--danger)}
.purple{background:var(--purple-soft);color:var(--purple)}
.cyan{background:var(--cyan-soft);color:var(--cyan)}
.badge{padding:7px 12px;border-radius:999px;font-size:12px;font-weight:800}
.badge.normal{background:var(--success-soft);color:var(--success)}
.badge.warn{background:var(--warning-soft);color:#b45309}
.badge.alert{background:var(--danger-soft);color:var(--danger)}
.metric-title{font-size:13px;color:var(--muted);margin-bottom:8px;font-weight:700;position:relative;z-index:1}
.metric-value{font-size:32px;font-weight:800;letter-spacing:-.04em;position:relative;z-index:1}
.metric-sub{margin-top:8px;color:var(--muted);font-size:13px;position:relative;z-index:1}
.dashboard-grid{display:grid;grid-template-columns:2fr 1fr;gap:20px;margin-bottom:22px}
.panel{
  background:rgba(255,255,255,.96);border:1px solid rgba(255,255,255,.72);border-radius:28px;padding:22px;box-shadow:var(--shadow);
}
.panel-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;flex-wrap:wrap;gap:10px}
.panel-head h3{font-size:19px;font-weight:800;letter-spacing:-.02em}
.panel-head span{color:var(--muted);font-size:13px;font-weight:600}
.chart-wrap{height:340px}
.mini-chart{height:310px}
.health-list{display:flex;flex-direction:column;gap:14px}
.health-item{background:var(--panel2);border:1px solid var(--line);border-radius:18px;padding:16px}
.health-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;font-weight:700;gap:8px}
.bar{width:100%;height:10px;background:#e7eef7;border-radius:999px;overflow:hidden}
.fill{height:100%;border-radius:999px;transition: width 0.5s ease-in-out;}
.shutdown-card{margin-top:18px;padding:20px;border-radius:24px;background:linear-gradient(135deg,#fff1f2,#ffffff);border:1px solid #fecdd3}
.shutdown-card .title{display:flex;align-items:center;gap:12px;font-size:18px;font-weight:800;color:#991b1b;margin-bottom:10px}
.shutdown-card p{color:#7f1d1d;font-size:13px;line-height:1.7;margin-bottom:16px}
.shutdown-btn{width:100%;border:none;border-radius:18px;background:linear-gradient(135deg,#dc2626,#b91c1c);color:#fff;padding:16px 18px;font-size:15px;font-weight:800;cursor:pointer;box-shadow:0 16px 28px rgba(220,38,38,.25)}
.status-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px;margin-top:10px}
.status-card{background:rgba(255,255,255,.96);border:1px solid rgba(255,255,255,.7);border-radius:24px;box-shadow:var(--shadow);padding:20px}
.status-card h4{font-size:15px;margin-bottom:10px;display:flex;align-items:center;gap:10px}
.status-card p{color:var(--muted);font-size:13px;line-height:1.7}
.history-table-wrap{background:rgba(255,255,255,.96);border-radius:28px;padding:22px;box-shadow:var(--shadow);overflow:auto}
table{width:100%;border-collapse:collapse;min-width:950px}
th,td{text-align:left;padding:16px 14px;border-bottom:1px solid var(--line);font-size:14px}
th{color:#42546b;background:#f7faff;font-size:13px;text-transform:uppercase;letter-spacing:.04em}
tr:hover td{background:#f8fbff}
.table-badge{display:inline-block;padding:7px 12px;border-radius:999px;font-size:12px;font-weight:800}
.table-badge.ok{background:var(--success-soft);color:var(--success)}
.table-badge.warning{background:var(--warning-soft);color:#b45309}
.table-badge.critical{background:var(--danger-soft);color:var(--danger)}
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:20px}
.about-card{background:rgba(255,255,255,.96);border-radius:28px;box-shadow:var(--shadow);padding:24px}
.about-card h3{font-size:20px;margin-bottom:14px}
.about-card p{color:var(--muted);line-height:1.9;font-size:14px;margin-bottom:14px}
.feature-list{display:grid;gap:12px;margin-top:12px}
.feature-item{display:flex;align-items:flex-start;gap:12px;padding:14px;border:1px solid var(--line);border-radius:18px;background:#f9fbfe}
.feature-item i{width:42px;height:42px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:var(--primary-soft);color:var(--primary);font-size:18px;flex-shrink:0}
.feature-item strong{display:block;margin-bottom:5px;font-size:14px}
.feature-item span{color:var(--muted);font-size:13px;line-height:1.6}
@media (max-width:1100px){.dashboard-grid,.about-grid{grid-template-columns:1fr}}
@media (max-width:900px){
  .sidebar{width:86px;padding:20px 12px}
  .brand div:last-child,.nav button span,.sidebar-footer{display:none}
  .nav button{justify-content:center;padding:14px 10px}
  .main{margin-left:86px;width:calc(100% - 86px)}
}
@media (max-width:700px){
  .main{padding:18px}.topbar h1{font-size:24px}.grid-cards{grid-template-columns:1fr}
  .sidebar{position:fixed;bottom:0;top:auto;height:auto;width:100%;flex-direction:row;padding:10px 12px;align-items:center;overflow:auto}
  .brand{display:none}.nav{flex-direction:row;width:100%;justify-content:space-between}
  .nav button{flex-direction:column;gap:6px;font-size:11px;padding:10px;border-radius:14px;min-width:72px}
  .nav button span{display:block}.main{margin-left:0;width:100%;padding-bottom:95px}
}