:root{
  --bg:#f6f8fc;
  --panel:#ffffff;
  --panel2:#f2f5fb;
  --text:#0f172a;
  --muted:#475569;
  --brand:#2563eb;
  --danger:#e11d48;
  --ok:#16a34a;
  --border:rgba(15,23,42,.10);
  --shadow:0 10px 30px rgba(15,23,42,.12);
  --radius:14px;
  --radius2:10px;
  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:var(--font);
  background:
    radial-gradient(900px 500px at 20% 0%, rgba(37,99,235,.12), transparent 60%),
    radial-gradient(900px 500px at 90% 20%, rgba(22,163,74,.08), transparent 55%),
    var(--bg);
  color:var(--text);
}
a{color:inherit;text-decoration:none}
.container{max-width:1100px;margin:0 auto;padding:24px}
.card{
  background:linear-gradient(180deg, rgba(255,255,255,1), rgba(255,255,255,.92));
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:10px 14px;border-radius:12px;border:1px solid var(--border);
  background:rgba(255,255,255,.75);color:var(--text);cursor:pointer;
  gap:8px;font-weight:600;
}
.btn.primary{background:rgba(37,99,235,.12);border-color:rgba(37,99,235,.30)}
.btn.danger{background:rgba(225,29,72,.10);border-color:rgba(225,29,72,.28)}
.btn:disabled{opacity:.6;cursor:not-allowed}
.input{
  width:100%;
  padding:11px 12px;
  border-radius:12px;
  border:1px solid var(--border);
  background:rgba(255,255,255,.90);
  color:var(--text);
  outline:none;
}
.input:focus{border-color:rgba(37,99,235,.55);box-shadow:0 0 0 3px rgba(37,99,235,.12)}
.label{display:block;margin:0 0 8px 2px;color:var(--muted);font-size:13px}
.grid{display:grid;gap:14px}
.grid.two{grid-template-columns:1fr 1fr}
.alert{
  padding:12px 14px;border-radius:12px;border:1px solid var(--border);
  background:rgba(255,255,255,.85);
}
.alert.error{border-color:rgba(225,29,72,.28);background:rgba(225,29,72,.08)}
.alert.ok{border-color:rgba(22,163,74,.25);background:rgba(22,163,74,.08)}
.muted{color:var(--muted)}

/* Layout */
.app{
  display:grid;
  grid-template-columns:260px 1fr;
  min-height:100vh;
}
.sidebar{
  background:linear-gradient(180deg, rgba(255,255,255,.92), rgba(255,255,255,.75));
  border-right:1px solid var(--border);
  padding:18px 14px;
}
.brand{
  display:flex;align-items:center;gap:10px;
  padding:10px 12px;border-radius:14px;
  border:1px solid var(--border);
  background:rgba(255,255,255,.75);
  margin-bottom:14px;
}
.brand .dot{
  width:12px;height:12px;border-radius:999px;background:var(--brand);
  box-shadow:0 0 0 4px rgba(37,99,235,.12);
}
.nav a{
  display:flex;align-items:center;gap:10px;
  padding:10px 12px;border-radius:12px;
  color:var(--muted);
}
.nav a.active{color:var(--text);background:rgba(88,166,255,.14);border:1px solid rgba(88,166,255,.22)}
.nav a.active{color:var(--text);background:rgba(37,99,235,.10);border:1px solid rgba(37,99,235,.20)}
.nav .section{margin:14px 10px 6px;color:rgba(15,23,42,.55);font-size:12px;letter-spacing:.08em;text-transform:uppercase}
.content{
  display:flex;
  flex-direction:column;
  min-width:0;
}
.topbar{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 18px;
  border-bottom:1px solid var(--border);
  background:rgba(255,255,255,.70);
  backdrop-filter: blur(8px);
  position:sticky;top:0;
}
.topbar .title{font-weight:800;letter-spacing:.2px}
.topbar .user{display:flex;align-items:center;gap:12px}
.pill{
  padding:6px 10px;border-radius:999px;border:1px solid var(--border);
  background:rgba(255,255,255,.80);color:var(--muted);font-size:13px
}
.main{padding:18px}

table{
  width:100%;
  border-collapse:separate;border-spacing:0;
  overflow:hidden;
}
th,td{padding:12px 12px;border-bottom:1px solid var(--border);text-align:left}
th{font-size:12px;color:rgba(231,238,252,.72);letter-spacing:.06em;text-transform:uppercase}
th{font-size:12px;color:rgba(15,23,42,.55);letter-spacing:.06em;text-transform:uppercase}
tr:hover td{background:rgba(37,99,235,.04)}

/* Auth page */
.auth{
  min-height:100vh;
  display:grid;
  place-items:center;
  padding:24px;
}
.auth .panel{width:100%;max-width:440px;padding:18px}
.auth h1{margin:6px 0 2px;font-size:26px}
.auth p{margin:0 0 14px}

@media (max-width: 860px){
  .app{grid-template-columns:1fr}
  .sidebar{position:sticky;top:0;z-index:2}
}