:root{
  --bg: #0b1220;
  --panel: rgba(255,255,255,0.06);
  --panel2: rgba(255,255,255,0.08);
  --stroke: rgba(255,255,255,0.10);
  --text: rgba(255,255,255,0.92);
  --muted: rgba(255,255,255,0.65);

  /* Muted blues & greens */
  --brand1: #6ea8d6; /* muted blue */
  --brand2: #6db8a6; /* muted green */

  /* Alerts only */
  --danger: #e15b64;
  --warn: #f0c56a;

  --shadow: 0 10px 30px rgba(0,0,0,0.35);
  --radius: 16px;
  --radius2: 22px;

  --focus: 0 0 0 4px rgba(110,168,214,0.35);
  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:var(--font);
  color:var(--text);
  background:
    radial-gradient(1200px 800px at 20% 10%, rgba(110,168,214,0.25), transparent 55%),
    radial-gradient(900px 700px at 75% 20%, rgba(109,184,166,0.18), transparent 55%),
    radial-gradient(800px 700px at 60% 90%, rgba(110,168,214,0.12), transparent 60%),
    var(--bg);
}

a{color:inherit; text-decoration:none}
.shell{min-height:100%; display:grid; grid-template-columns: 280px 1fr; grid-template-rows: auto 1fr; grid-template-areas:
  "topbar topbar"
  "sidenav main";
}

.topbar{
  grid-area: topbar;
  position:sticky; top:0;
  display:flex; align-items:center; justify-content:space-between;
  padding:18px 20px;
  backdrop-filter: blur(14px);
  background: rgba(11,18,32,0.65);
  border-bottom:1px solid var(--stroke);
  z-index:20;
}

.brand{display:flex; align-items:center; gap:12px}
.brand-mark{
  width:44px; height:44px; border-radius:14px;
  background: linear-gradient(135deg, rgba(110,168,214,0.95), rgba(109,184,166,0.9));
  box-shadow: var(--shadow);
}
.brand-title{font-weight:700; letter-spacing:0.2px}
.brand-sub{font-size:12px; color:var(--muted); margin-top:2px}

.topbar-right{display:flex; align-items:center; gap:10px}

.pill{
  display:flex; align-items:center; gap:10px;
  padding:10px 12px;
  border:1px solid var(--stroke);
  background: var(--panel);
  border-radius: 999px;
}
.pill-dot{
  width:10px; height:10px; border-radius:999px;
  background: linear-gradient(135deg, var(--brand2), var(--brand1));
}

.sidenav{
  grid-area: sidenav;
  padding:18px;
  border-right:1px solid var(--stroke);
  background: rgba(255,255,255,0.03);
}
.sidenav nav{display:flex; flex-direction:column; gap:8px}
.navlink{
  padding:12px 12px;
  border-radius: 14px;
  border:1px solid transparent;
  background: transparent;
  color: var(--muted);
}
.navlink:hover{
  background: var(--panel);
  border-color: var(--stroke);
  color: var(--text);
}

.main{
  grid-area: main;
  padding:22px;
}

.container{
  max-width: 1120px;
  margin: 0 auto;
}

.card{
  background: var(--panel);
  border:1px solid var(--stroke);
  border-radius: var(--radius2);
  box-shadow: var(--shadow);
}
.card-h{
  padding:16px 18px;
  border-bottom:1px solid var(--stroke);
  display:flex; justify-content:space-between; align-items:center;
}
.card-b{padding:18px}

.h1{font-size:26px; font-weight:750; letter-spacing:0.2px; margin:0}
.h2{font-size:16px; font-weight:700; margin:0}
.muted{color:var(--muted)}
.row{display:flex; gap:14px; flex-wrap:wrap}
.grid{
  display:grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 14px;
}
.col-3{grid-column: span 3}
.col-4{grid-column: span 4}
.col-6{grid-column: span 6}
.col-8{grid-column: span 8}
.col-12{grid-column: span 12}

.stat{
  padding:14px;
  border-radius: var(--radius);
  border:1px solid var(--stroke);
  background: rgba(255,255,255,0.04);
}
.stat-k{font-size:12px; color:var(--muted)}
.stat-v{font-size:24px; font-weight:800; margin-top:4px}

.badge{
  display:inline-flex; align-items:center; gap:8px;
  padding:6px 10px;
  border-radius: 999px;
  border:1px solid var(--stroke);
  background: rgba(255,255,255,0.04);
  font-size:12px;
}
.badge.open{border-color: rgba(109,184,166,0.35)}
.badge.closed{border-color: rgba(225,91,100,0.35)}
.badge.maint{border-color: rgba(240,197,106,0.35)}

.btn{
  display:inline-flex; align-items:center; justify-content:center;
  gap:10px;
  padding:10px 12px;
  border-radius: 14px;
  border:1px solid var(--stroke);
  background: rgba(255,255,255,0.06);
  color: var(--text);
  cursor:pointer;
}
.btn:hover{background: rgba(255,255,255,0.09)}
.btn:focus{outline:none; box-shadow: var(--focus)}
.btn-primary{
  border-color: rgba(110,168,214,0.35);
  background: linear-gradient(135deg, rgba(110,168,214,0.35), rgba(109,184,166,0.22));
}
.btn-ghost{background: transparent}

.input, select, textarea{
  width:100%;
  padding:12px 12px;
  border-radius: 14px;
  border:1px solid var(--stroke);
  background: rgba(0,0,0,0.20);
  color: var(--text);
}
.input:focus, select:focus, textarea:focus{
  outline:none; box-shadow: var(--focus);
  border-color: rgba(110,168,214,0.45);
}

.form-row{display:grid; grid-template-columns: 1fr 1fr; gap:12px}
.form-row-1{display:grid; grid-template-columns: 1fr; gap:12px}

.table{
  width:100%;
  border-collapse: separate;
  border-spacing: 0;
  overflow:hidden;
  border-radius: var(--radius);
  border:1px solid var(--stroke);
}
.table th, .table td{
  padding:12px;
  border-bottom:1px solid rgba(255,255,255,0.06);
  text-align:left;
  font-size: 13px;
}
.table th{color: var(--muted); font-weight:700; background: rgba(255,255,255,0.04)}
.table tr:hover td{background: rgba(255,255,255,0.03)}

.alert{
  padding:12px 14px;
  border-radius: var(--radius);
  border:1px solid var(--stroke);
  background: rgba(255,255,255,0.04);
}
.alert.danger{border-color: rgba(225,91,100,0.45)}
.alert.warn{border-color: rgba(240,197,106,0.45)}

.login-shell{
  min-height:100%;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:22px;
}
.login-card{
  width:min(920px, 100%);
  display:grid;
  grid-template-columns: 1.15fr 0.85fr;
  overflow:hidden;
}
.login-hero{
  padding:24px;
  background:
    radial-gradient(700px 400px at 30% 20%, rgba(110,168,214,0.25), transparent 55%),
    radial-gradient(700px 400px at 70% 80%, rgba(109,184,166,0.18), transparent 55%),
    rgba(255,255,255,0.03);
  border-right:1px solid var(--stroke);
}
.login-form{padding:24px}

@media (max-width: 900px){
  .shell{grid-template-columns: 1fr; grid-template-areas:
    "topbar"
    "main"; }
  .sidenav{display:none}
  .login-card{grid-template-columns:1fr}
  .login-hero{display:none}
  .grid{grid-template-columns: 1fr}
  .col-3,.col-4,.col-6,.col-8,.col-12{grid-column:1}
  .form-row{grid-template-columns:1fr}
}