/* Admin layout styles (English comments as requested) */
:root{
  --sidebar-w: 260px;
  --sidebar-bg: #0f172a;
  --sidebar-link: #e2e8f0;
  --sidebar-muted:#94a3b8;
}
html, body { height:100%; }
body{ background:#f6f7fb; }
.admin-shell{ display:grid; grid-template-columns: var(--sidebar-w) 1fr; min-height: calc(100vh - 96px); }
.admin-sidebar{
  background:var(--sidebar-bg); color:#fff;
  position:sticky; top:56px; height:calc(100vh - 56px); overflow:auto;
}
.admin-sidebar .list-group-item{ background:transparent; color:var(--sidebar-link); border:0; border-radius:0; }
.admin-sidebar .list-group-item:hover{ background:rgba(255,255,255,.06); }
.menu-heading{ color:var(--sidebar-muted); }

.login-wrap{
  min-height:100vh; display:flex; align-items:center; justify-content:center;
  background:linear-gradient(180deg, #eaf4ff, #cfb979);
}
.login-card{
  width:min(440px, 92vw);
  border:0; border-radius:16px;
  box-shadow:0 18px 50px rgba(0,0,0,.12);
}