:root{
  --primary:#2f5bea; --primary-dark:#1e3fb8; --secondary:#7c3aed;
  --bg:#f4f6fb; --card:#ffffff; --border:#e6e9f2; --text:#1a2035; --muted:#66708a;
  --success:#12a150; --danger:#e0403a; --warning:#b45309; --navy:#101638;
  --radius:12px;
}
*{box-sizing:border-box;}
body{margin:0;font-family:'Roboto',sans-serif;background:var(--bg);color:var(--text);font-size:14px;}
a{text-decoration:none;color:inherit;}
table{width:100%;border-collapse:collapse;}

/* ---- Shell layout ---- */
.admin-shell{display:flex;min-height:100vh;}
.sidebar{width:250px;background:var(--navy);color:#c6cbe2;flex-shrink:0;position:sticky;top:0;height:100vh;overflow-y:auto;}
.sidebar-logo{display:flex;align-items:center;gap:10px;padding:20px;font-weight:800;color:#fff;font-size:15px;border-bottom:1px solid rgba(255,255,255,.08);}
.sidebar-logo .mark{width:32px;height:32px;border-radius:8px;background:linear-gradient(135deg,var(--primary),var(--secondary));display:flex;align-items:center;justify-content:center;font-size:14px;color:#fff;flex-shrink:0;}
.sidebar-nav{padding:14px 10px;}
.sidebar-nav a{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:8px;font-size:13.5px;margin-bottom:2px;color:#c6cbe2;}
.sidebar-nav a:hover{background:rgba(255,255,255,.06);color:#fff;}
.sidebar-nav a.active{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;}
.nav-group{font-size:10.5px;text-transform:uppercase;letter-spacing:.6px;color:#7680a3;padding:16px 12px 6px;font-weight:700;}
.pill{margin-left:auto;background:var(--danger);color:#fff;font-size:10.5px;padding:1px 7px;border-radius:20px;font-weight:700;}

.main-area{flex:1;min-width:0;}
.topbar{display:flex;align-items:center;gap:16px;background:#fff;border-bottom:1px solid var(--border);padding:14px 24px;position:sticky;top:0;z-index:10;}
.topbar-title{font-weight:700;font-size:16px;flex:1;}
.topbar-user{display:flex;align-items:center;gap:12px;font-size:13px;}
.topbar-user small{color:var(--muted);}
.btn-mini{padding:7px 12px;border-radius:7px;background:var(--bg);border:1px solid var(--border);font-size:12.5px;font-weight:600;}
.btn-danger{color:var(--danger);}
.hamburger{display:none;background:none;border:none;font-size:20px;cursor:pointer;}
.content{padding:24px;}

/* ---- Cards / stats ---- */
.stat-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:24px;}
.stat-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:18px;}
.stat-card .lbl{font-size:12px;color:var(--muted);margin-bottom:6px;}
.stat-card .val{font-size:24px;font-weight:800;}
.stat-card .icon{float:right;width:34px;height:34px;border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:15px;}

.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:20px;}
.card-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;flex-wrap:wrap;gap:10px;}
.card-head h3{margin:0;font-size:15.5px;}

/* ---- Forms ---- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 16px;}
.form-group{margin-bottom:14px;}
.form-group label{display:block;font-size:12.5px;font-weight:600;margin-bottom:6px;color:var(--text);}
.form-group input, .form-group select, .form-group textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;font-size:13.5px;font-family:inherit;background:#fff;}
.form-group textarea{min-height:90px;resize:vertical;}
.form-hint{font-size:11.5px;color:var(--muted);margin-top:4px;}
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--border);margin-bottom:20px;flex-wrap:wrap;}
.tabs a{padding:10px 16px;font-size:13px;font-weight:600;color:var(--muted);border-bottom:2px solid transparent;}
.tabs a.active{color:var(--primary);border-color:var(--primary);}

/* ---- Buttons ---- */
.btn{display:inline-flex;align-items:center;gap:6px;padding:9px 18px;border-radius:8px;font-weight:600;font-size:13px;border:none;cursor:pointer;}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;}
.btn-outline{background:#fff;border:1px solid var(--border);color:var(--text);}
.btn-danger-outline{background:#fff;border:1px solid #f6c4c1;color:var(--danger);}
.btn-success-outline{background:#fff;border:1px solid #b9ecca;color:var(--success);}
.btn-sm{padding:6px 12px;font-size:12px;}

/* ---- Table ---- */
.table th{text-align:left;font-size:11.5px;text-transform:uppercase;color:var(--muted);padding:10px 12px;border-bottom:1px solid var(--border);letter-spacing:.3px;}
.table td{padding:12px;border-bottom:1px solid var(--border);font-size:13px;vertical-align:middle;}
.table tr:hover td{background:#fafbff;}
.badge{padding:4px 10px;border-radius:20px;font-size:11px;font-weight:700;display:inline-block;}
.badge-active,.badge-verified,.badge-success{background:#e9f9ef;color:var(--success);}
.badge-pending{background:#fff4e5;color:var(--warning);}
.badge-expired,.badge-revoked,.badge-danger,.badge-suspended{background:#fdecea;color:var(--danger);}
.badge-inactive{background:#eef0f5;color:var(--muted);}

.filter-bar{display:flex;gap:10px;margin-bottom:16px;flex-wrap:wrap;}
.filter-bar input, .filter-bar select{padding:9px 12px;border:1px solid var(--border);border-radius:8px;font-size:13px;font-family:inherit;}

.alert{padding:12px 14px;border-radius:8px;font-size:13px;margin-bottom:18px;}
.alert-success{background:#e9f9ef;color:var(--success);border:1px solid #b9ecca;}
.alert-error{background:#fdecea;color:var(--danger);border:1px solid #f6c4c1;}
.alert-warning{background:#fff4e5;color:var(--warning);border:1px solid #fbdca6;}

/* ---- Login screen ---- */
.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#eef2ff,#f7f9fc);padding:20px;}
.auth-card{width:100%;max-width:400px;background:#fff;border-radius:16px;box-shadow:0 20px 50px rgba(20,30,70,.12);padding:34px;}
.auth-logo{display:flex;align-items:center;gap:10px;justify-content:center;margin-bottom:22px;font-weight:800;font-size:18px;}
.auth-logo .mark{width:36px;height:36px;border-radius:9px;background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;display:flex;align-items:center;justify-content:center;}
.auth-card h2{text-align:center;font-size:18px;margin:0 0 4px;}
.auth-card p.sub{text-align:center;color:var(--muted);font-size:12.5px;margin:0 0 22px;}

@media(max-width:900px){
  .sidebar{position:fixed;left:-260px;z-index:200;transition:left .2s ease;}
  .sidebar.open{left:0;}
  .hamburger{display:block;}
  .stat-cards{grid-template-columns:1fr 1fr;}
  .form-grid{grid-template-columns:1fr;}
}
@media(max-width:480px){
  .stat-cards{grid-template-columns:1fr;}
  .topbar-user span{display:none;}
}