:root{
  --bg:#0b0f17;
  --panel:#0f1624;
  --card:#121c2d;
  --muted:#8ea0bf;
  --text:#e7eefc;
  --line:#22314d;
  --btn:#1c2a44;
  --btn2:#223357;
  --accent:#3b82f6;
  --danger:#ef4444;
  --radius:14px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background:linear-gradient(180deg, #070a10, var(--bg));
  color:var(--text);
  font-family:system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

a{color:inherit; text-decoration:none}

.topbar{
  position:sticky; top:0; z-index:50;
  display:flex; justify-content:space-between; align-items:center;
  padding:14px 16px;
  background:rgba(10,14,22,.85);
  backdrop-filter: blur(10px);
  border-bottom:1px solid var(--line);
}

.brand{display:flex; align-items:center; gap:12px}
.logo{
  width:36px; height:36px; border-radius:10px;
  display:grid; place-items:center;
  background:linear-gradient(135deg, #1b2a46, #0f1624);
  border:1px solid var(--line);
  font-weight:800;
}
.brand-title{font-weight:800; letter-spacing:.2px}
.brand-sub{font-size:12px; color:var(--muted); margin-top:2px}

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

.layout{
  display:grid;
  grid-template-columns: 260px 1fr;
  min-height: calc(100vh - 64px);
}

.sidebar{
  position:sticky; top:64px;
  height: calc(100vh - 64px);
  overflow:auto;
  border-right:1px solid var(--line);
  background:rgba(15,22,36,.6);
  padding:12px;
}

.navitem{
  display:block;
  padding:10px 10px;
  border-radius:12px;
  color:var(--muted);
  margin-bottom:6px;
  border:1px solid transparent;
}
.navitem:hover{background:rgba(18,28,45,.7); color:var(--text); border-color:rgba(34,49,77,.6)}
.navitem.active{background:rgba(18,28,45,.95); color:var(--text); border-color:rgba(59,130,246,.5)}

.content{padding:14px}
.grid{
  display:grid;
  grid-template-columns: repeat(12, 1fr);
  gap:12px;
}

.card{
  background:rgba(18,28,45,.92);
  border:1px solid rgba(34,49,77,.8);
  border-radius: var(--radius);
  box-shadow: 0 10px 30px rgba(0,0,0,.25);
}
.card-title{
  padding:12px 14px;
  border-bottom:1px solid rgba(34,49,77,.8);
  font-weight:800;
}
.card-body{padding:14px}

.span12{grid-column: span 12}

.row{display:flex; gap:10px; align-items:center}
.stack{display:flex; flex-direction:column; gap:10px}

.lbl{display:block; font-size:12px; color:var(--muted); margin-bottom:6px}
.input, select, textarea{
  width:100%;
  padding:10px 12px;
  border-radius:12px;
  border:1px solid rgba(34,49,77,.9);
  background:rgba(8,12,20,.65);
  color:var(--text);
  outline:none;
}
textarea{resize:vertical}
.mono{font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;}
.small{font-size:12px; color:var(--muted)}
.h{font-weight:800}
.sep{height:1px; background:rgba(34,49,77,.8); margin:12px 0}

.btn{
  padding:10px 12px;
  border-radius:12px;
  border:1px solid rgba(34,49,77,.9);
  background:linear-gradient(180deg, var(--btn2), var(--btn));
  color:var(--text);
  cursor:pointer;
  font-weight:700;
}
.btn:hover{filter:brightness(1.06)}
.btn.ghost{background:transparent}
.btn.primary{border-color:rgba(59,130,246,.8)}
.btn.danger{border-color:rgba(239,68,68,.8)}

.pill{
  padding:6px 10px;
  border-radius:999px;
  border:1px solid rgba(34,49,77,.9);
  background:rgba(8,12,20,.55);
}

.notice{
  border:1px solid rgba(34,49,77,.8);
  background:rgba(8,12,20,.4);
  border-radius:14px;
  padding:12px;
}
.pre{
  margin:8px 0 0 0;
  padding:12px;
  border-radius:14px;
  border:1px solid rgba(34,49,77,.8);
  background:rgba(8,12,20,.55);
  overflow:auto;
}

.item{
  border:1px solid rgba(34,49,77,.8);
  background:rgba(8,12,20,.35);
  border-radius:14px;
  padding:12px;
}

@media (max-width: 980px){
  .layout{grid-template-columns: 1fr}
  .sidebar{position:relative; top:0; height:auto}
}
/* --- Admin: layout wide + tabs horizontal --- */
.layout.layout-wide{
  display:block;
  min-height: calc(100vh - 64px);
}

.tabs{
  display:flex;
  gap:8px;
  flex-wrap:wrap;
  padding:12px 12px 0 12px;
}

.tab{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 12px;
  border-radius:12px;
  color:var(--muted);
  border:1px solid rgba(34,49,77,.8);
  background:rgba(8,12,20,.35);
}

.tab:hover{
  color:var(--text);
  border-color:rgba(59,130,246,.5);
  background:rgba(18,28,45,.7);
}

.tab.active{
  color:var(--text);
  border-color:rgba(59,130,246,.8);
  background:rgba(18,28,45,.95);
}

/* (opzionale) più respiro sopra la grid quando ci sono tabs */
.layout-wide .grid{ margin-top:12px; }
/* Admin tabs: panels must span full grid width */
.panel{
  grid-column: 1 / -1;   /* prende tutte le 12 colonne */
}