:root{
  --bg: #0b1220;
  --panel: rgba(255,255,255,.06);
  --panel-2: rgba(255,255,255,.08);
  --text: #e8eefc;
  --muted: rgba(232,238,252,.72);

  --brand-1:#0a2a66;
  --brand-2:#0f4c9a;
  --gold:#f4c95d;

  --stroke: rgba(255,255,255,.10);
  --shadow: 0 18px 50px rgba(0,0,0,.35);

  --radius: 18px;
  --radius-2: 22px;

  --sidebar-w: 290px;
  --sidebar-collapsed: 76px;

  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Inter, "Poppins", Roboto, Arial;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:var(--font);
  background:
    radial-gradient(900px 600px at 20% 10%, rgba(15,76,154,.35), transparent 55%),
    radial-gradient(800px 520px at 85% 25%, rgba(244,201,93,.18), transparent 55%),
    linear-gradient(180deg, #070b14 0%, #0b1220 60%, #070b14 100%);
  color:var(--text);
}

a{color:inherit;text-decoration:none}
.container{
  max-width:1180px;
  margin:0 auto;
  padding:18px 16px 26px;
}

.layout{
  display:flex;
  min-height:100vh;
}

/* Sidebar */
.sidebar{
  width:var(--sidebar-w);
  position:sticky;
  top:0;
  height:100vh;
  padding:16px 14px;
  border-right:1px solid var(--stroke);
  background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
  backdrop-filter: blur(10px);
}

.brand{
  display:flex;
  gap:10px;
  align-items:center;
  padding:10px 10px 14px;
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(15,76,154,.22), rgba(255,255,255,.03));
  border:1px solid var(--stroke);
  box-shadow: var(--shadow);
}

.brand img{
  height:34px;
  width:auto;
  display:block;
}

.brand .title{
  display:flex;
  flex-direction:column;
  line-height:1.1;
}

.brand .title strong{
  font-size:14px;
  letter-spacing:.2px;
}

.brand .title span{
  font-size:12px;
  color:var(--muted);
}

.searchbox{
  margin-top:12px;
  padding:10px 10px;
  border-radius: 14px;
  border:1px solid var(--stroke);
  background: rgba(255,255,255,.04);
  display:flex;
  gap:10px;
  align-items:center;
}

.searchbox input{
  width:100%;
  border:none;
  outline:none;
  background:transparent;
  color:var(--text);
  font-size:13px;
}

.nav{
  margin-top:12px;
  display:flex;
  flex-direction:column;
  gap:10px;
}

.nav-group{
  border:1px solid var(--stroke);
  background: rgba(255,255,255,.03);
  border-radius: var(--radius);
  overflow:hidden;
}

.nav-group summary{
  list-style:none;
  cursor:pointer;
  padding:12px 12px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  user-select:none;
  font-weight:600;
  font-size:12px;
  color: rgba(232,238,252,.86);
  background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
}

.nav-group summary::-webkit-details-marker{display:none}
.nav-items{padding:8px 6px 10px}

.nav a.item{
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px 10px;
  border-radius: 14px;
  font-size:13px;
  color: rgba(232,238,252,.9);
  border:1px solid transparent;
}

.nav a.item:hover{
  background: rgba(255,255,255,.06);
  border-color: rgba(255,255,255,.08);
}

.nav a.item.active{
  background: linear-gradient(135deg, rgba(15,76,154,.35), rgba(244,201,93,.12));
  border-color: rgba(244,201,93,.25);
  position:relative;
}

.nav a.item.active::before{
  content:"";
  width:3px;
  height:18px;
  background: var(--gold);
  border-radius: 12px;
  position:absolute;
  left:-1px;
  top:50%;
  transform: translateY(-50%);
}

.icon{
  width:18px;height:18px; flex:0 0 18px;
  opacity:.95;
}

/* Main */
.main{
  flex:1;
  padding:18px 0;
}

.topbar{
  margin:0 16px;
  border-radius: var(--radius-2);
  border:1px solid var(--stroke);
  background: linear-gradient(135deg, rgba(15,76,154,.35), rgba(255,255,255,.03));
  box-shadow: var(--shadow);
}

.topbar-inner{
  max-width:1180px;
  margin:0 auto;
  padding:14px 16px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}

.page-title{
  display:flex;
  flex-direction:column;
  gap:2px;
}

.page-title h1{
  margin:0;
  font-size:16px;
  letter-spacing:.2px;
  color: var(--gold);
}

.page-title p{
  margin:0;
  font-size:12px;
  color: var(--muted);
}

.btn{
  border:1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.05);
  color: var(--text);
  padding:10px 12px;
  border-radius: 14px;
  cursor:pointer;
  font-weight:600;
  font-size:13px;
}

.btn:hover{ background: rgba(255,255,255,.08); }
.btn.primary{
  background: linear-gradient(135deg, rgba(15,76,154,.55), rgba(15,76,154,.20));
  border-color: rgba(15,76,154,.55);
}
.btn.danger{
  background: linear-gradient(135deg, rgba(210,70,70,.55), rgba(255,255,255,.05));
  border-color: rgba(210,70,70,.55);
}

.card{
  border:1px solid var(--stroke);
  background: rgba(255,255,255,.03);
  border-radius: var(--radius-2);
  box-shadow: var(--shadow);
  padding:16px;
}

.grid{
  display:grid;
  gap:14px;
  grid-template-columns: repeat(12, 1fr);
}
.col-12{grid-column: span 12;}
.col-6{grid-column: span 6;}
.col-4{grid-column: span 4;}

@media (max-width: 980px){
  .sidebar{display:none;}
  .topbar{margin:0 10px;}
  .col-6, .col-4{grid-column: span 12;}
}