:root{
  --navy:#0f172a;
  --primary:#1e3a8a;
  --accent:#2563eb;
  --gold:#f59e0b;
  --gold-dark:#d97706;
  --bg:#f8fafc;
  --text:#1f2937;
}
body{
  background:var(--bg);
  color:var(--text);
  font-family:'Inter',sans-serif;
}
h1,h2,h3,h4,h5,h6,.brand,.sidebar .nav-link{
  font-family:'Poppins',sans-serif;
}

/* Sidebar */
.sidebar{
  position:fixed; top:0; left:0; bottom:0; width:250px;
  background:linear-gradient(180deg,var(--navy) 0%,var(--primary) 100%);
  color:#fff; padding-top:1rem; overflow-y:auto; z-index:1030;
  transition:transform .25s ease;
}
.sidebar .brand{
  font-weight:600; font-size:1.15rem; padding:.75rem 1.25rem 1.25rem;
  border-bottom:1px solid rgba(255,255,255,.12); display:flex; align-items:center; gap:.6rem;
}
.sidebar .brand .badge-dot{
  width:10px;height:10px;border-radius:50%;background:var(--gold);display:inline-block;
}
.sidebar .nav-link{
  color:rgba(255,255,255,.82); padding:.7rem 1.25rem; font-size:.93rem;
  display:flex; align-items:center; gap:.7rem; border-left:3px solid transparent;
}
.sidebar .nav-link i{ width:18px; text-align:center; }
.sidebar .nav-link:hover{ background:rgba(255,255,255,.08); color:#fff; }
.sidebar .nav-link.active{
  background:rgba(255,255,255,.12); color:#fff; border-left-color:var(--gold); font-weight:600;
}
.sidebar-footer{ padding:1rem 1.25rem; font-size:.78rem; color:rgba(255,255,255,.55); }

/* Main area */
.main-wrap{ margin-left:250px; min-height:100vh; }
.topbar{
  background:#fff; border-bottom:1px solid #e5e7eb; padding:.75rem 1.5rem;
  display:flex; align-items:center; gap:1rem; position:sticky; top:0; z-index:1020;
}
.topbar form{ flex:1; max-width:420px; }
.content{ padding:1.5rem; }

/* Cards */
.stat-card{
  background:#fff; border-radius:14px; padding:1.25rem 1.4rem; box-shadow:0 2px 10px rgba(15,23,42,.06);
  border:1px solid #eef0f4; height:100%;
}
.stat-card .val{ font-size:1.7rem; font-weight:700; color:var(--primary); }
.stat-card .lbl{ font-size:.82rem; color:#6b7280; font-weight:500; }
.stat-card .icon{
  width:44px; height:44px; border-radius:10px; display:flex; align-items:center; justify-content:center;
  background:rgba(30,58,138,.08); color:var(--primary); font-size:1.2rem;
}
.card-panel{
  background:#fff; border-radius:14px; box-shadow:0 2px 10px rgba(15,23,42,.06); border:1px solid #eef0f4;
}
.card-panel .card-header{
  background:#fff; border-bottom:1px solid #f0f1f4; font-weight:600; border-radius:14px 14px 0 0;
  padding:.9rem 1.25rem;
}
.badge-gold{ background:var(--gold); color:#fff; }
.rank-1{ background:linear-gradient(90deg,#fff7e6,#fff); border-left:4px solid var(--gold); }
.table thead th{ font-size:.78rem; text-transform:uppercase; letter-spacing:.03em; color:#6b7280; border-bottom-width:1px; }
.btn-primary{ background:var(--primary); border-color:var(--primary); }
.btn-primary:hover{ background:var(--accent); border-color:var(--accent); }
.btn-gold{ background:var(--gold); border-color:var(--gold); color:#fff; }
.btn-gold:hover{ background:var(--gold-dark); border-color:var(--gold-dark); color:#fff; }

@media (max-width: 991.98px){
  .sidebar{ transform:translateX(-100%); }
  .sidebar.show{ transform:translateX(0); }
  .main-wrap{ margin-left:0; }
}