:root{
  --bg:#f4f6f9; --card:#fff; --text:#1f2937; --muted:#6b7280;
  --primary:#2563eb; --primary-dark:#1d4ed8;
  --green:#16a34a; --red:#dc2626; --amber:#d97706;
  --border:#e5e7eb;
}
*{box-sizing:border-box;}
body{margin:0;font-family:-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);}
.layout{display:flex;min-height:100vh;}
.sidebar{width:220px;background:#111827;color:#e5e7eb;display:flex;flex-direction:column;padding:20px 0;position:sticky;top:0;height:100vh;}
.brand{font-size:20px;font-weight:700;padding:0 20px 20px;color:#fff;}
.sidebar nav{display:flex;flex-direction:column;flex:1;}
.sidebar nav a{color:#cbd5e1;text-decoration:none;padding:12px 20px;font-size:14px;border-left:3px solid transparent;}
.sidebar nav a:hover{background:#1f2937;color:#fff;}
.sidebar nav a.active{background:#1f2937;color:#fff;border-left-color:var(--primary);}
.sidebar-footer{padding:16px 20px;border-top:1px solid #1f2937;}
.user-chip{font-size:12px;color:#9ca3af;margin-bottom:8px;}
.logout-link{color:#f87171;text-decoration:none;font-size:13px;}
.content{flex:1;padding:28px 32px;max-width:1200px;}
h1{font-size:22px;margin:0 0 20px;}
h2{font-size:17px;margin:0 0 12px;}
.card{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:20px;margin-bottom:20px;}
.grid-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-bottom:24px;}
.stat{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:18px;}
.stat .label{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px;}
.stat .value{font-size:26px;font-weight:700;margin-top:4px;}
table{width:100%;border-collapse:collapse;font-size:14px;}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--border);}
th{color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;}
tr:hover td{background:#fafafa;}
.badge{display:inline-block;padding:3px 10px;border-radius:20px;font-size:12px;font-weight:600;}
.badge-pending{background:#fef3c7;color:var(--amber);}
.badge-approved{background:#dcfce7;color:var(--green);}
.badge-rejected{background:#fee2e2;color:var(--red);}
.flag{display:inline-block;padding:2px 8px;border-radius:6px;font-size:11px;font-weight:600;margin-left:4px;}
.flag-mock{background:#fee2e2;color:var(--red);}
.flag-edited{background:#fef3c7;color:var(--amber);}
.btn{display:inline-block;padding:9px 16px;border-radius:8px;border:none;cursor:pointer;font-size:14px;font-weight:600;text-decoration:none;}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-dark);}
.btn-approve{background:var(--green);color:#fff;}
.btn-reject{background:var(--red);color:#fff;}
.btn-secondary{background:#e5e7eb;color:var(--text);}
.btn-sm{padding:5px 10px;font-size:12px;}
form.inline{display:inline;}
input[type=text],input[type=number],input[type=password],input[type=date],select,textarea{
  width:100%;padding:9px 11px;border:1px solid var(--border);border-radius:7px;font-size:14px;margin-bottom:14px;
}
label{font-size:13px;font-weight:600;color:var(--muted);display:block;margin-bottom:4px;}
.filters{display:flex;gap:12px;flex-wrap:wrap;align-items:end;margin-bottom:18px;}
.filters > div{min-width:160px;}
.filters label{margin-bottom:4px;}
.filters input,.filters select{margin-bottom:0;}
.login-wrap{display:flex;align-items:center;justify-content:center;min-height:100vh;background:var(--bg);}
.login-box{background:#fff;padding:36px;border-radius:12px;width:340px;box-shadow:0 8px 30px rgba(0,0,0,.08);}
.login-box h1{text-align:center;}
.alert{padding:12px 16px;border-radius:8px;margin-bottom:16px;font-size:14px;}
.alert-success{background:#dcfce7;color:#166534;}
.alert-error{background:#fee2e2;color:#991b1b;}
.text-muted{color:var(--muted);font-size:13px;}
.detail-row{display:grid;grid-template-columns:180px 1fr;padding:8px 0;border-bottom:1px solid var(--border);}
.detail-row .k{color:var(--muted);font-size:13px;}
.actions-bar{display:flex;gap:10px;margin-top:20px;}