:root{
    --bg:#f4f7fb; --panel:#ffffff; --text:#1f2937; --muted:#6b7280; --line:#dde5ef;
    --primary:#1d4ed8; --success:#15803d; --danger:#b91c1c; --warning:#b45309; --light:#eef2f7;
}
*{box-sizing:border-box}
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text)}
a{text-decoration:none;color:inherit}
.admin-shell{display:flex;min-height:100vh}
.sidebar{width:280px;background:#0f172a;color:#fff;padding:20px;flex-shrink:0}
.sidebar .brand{font-size:22px;font-weight:700;margin-bottom:18px}
.menu{display:flex;flex-direction:column;gap:8px}
.menu-link{display:flex;gap:10px;align-items:center;padding:12px 14px;border-radius:10px;color:#cbd5e1}
.menu-link.active,.menu-link:hover{background:#1e293b;color:#fff}
.content{flex:1;padding:20px}
.topbar{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:20px;background:var(--panel);border:1px solid var(--line);padding:16px;border-radius:16px}
.topbar-left{display:flex;align-items:center;gap:12px}
.topbar h1{margin:0;font-size:22px}
.breadcrumb{font-size:13px;color:var(--muted)}
.topbar-right{display:flex;align-items:center;gap:10px}
.user-chip{background:var(--light);padding:8px 12px;border-radius:999px;font-size:13px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:18px;margin-bottom:20px}
.card-title{font-size:18px;margin:0 0 14px 0}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.kpi{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:18px}
.kpi .label{font-size:13px;color:var(--muted);margin-bottom:8px}
.kpi .value{font-size:28px;font-weight:700}
.btn{display:inline-flex;align-items:center;justify-content:center;border:none;border-radius:10px;padding:10px 14px;cursor:pointer;font-weight:600}
.btn-sm{padding:8px 10px;font-size:12px}
.btn-primary{background:var(--primary);color:#fff}
.btn-success{background:var(--success);color:#fff}
.btn-danger{background:var(--danger);color:#fff}
.btn-warning{background:var(--warning);color:#fff}
.btn-light{background:var(--light);color:var(--text);border:1px solid var(--line)}
.actions{display:flex;gap:8px;flex-wrap:wrap}
.table-wrap{overflow:auto}
table{width:100%;border-collapse:collapse;background:var(--panel)}
th,td{padding:10px;border-bottom:1px solid var(--line);text-align:left;font-size:14px;vertical-align:top}
th{background:#f8fafc}
.form-grid{display:grid;gap:14px}
.form-row-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.form-row-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
input,select,textarea{width:100%;border:1px solid #cbd5e1;border-radius:10px;padding:11px 12px;background:#fff}
label{display:block;margin-bottom:6px;font-weight:600;font-size:14px}
.alert{padding:12px 14px;border-radius:10px;margin-bottom:12px;border:1px solid transparent}
.alert-success{background:#ecfdf5;border-color:#bbf7d0;color:#166534}
.alert-danger{background:#fef2f2;border-color:#fecaca;color:#991b1b}
.alert-warning{background:#fffbeb;border-color:#fde68a;color:#92400e}
.alert-info{background:#eff6ff;border-color:#bfdbfe;color:#1d4ed8}
.text-muted{color:var(--muted)}
.text-right{text-align:right}
.badge{display:inline-block;padding:6px 10px;border-radius:999px;font-size:12px;font-weight:700}
.badge-success{background:#dcfce7;color:#166534}
.badge-warning{background:#fef3c7;color:#92400e}
.badge-danger{background:#fee2e2;color:#991b1b}
.badge-info{background:#dbeafe;color:#1d4ed8}
.login-body{display:flex;min-height:100vh;align-items:center;justify-content:center;padding:20px;background:linear-gradient(135deg,#0f172a,#1d4ed8)}
.login-card{width:min(420px,100%);background:#fff;border-radius:18px;padding:26px;box-shadow:0 20px 50px rgba(0,0,0,.15)}
.small-note{font-size:12px;color:var(--muted);margin-top:14px}
.toolbar{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.filters{display:grid;grid-template-columns:2fr 1fr 1fr 1fr auto;gap:10px}
.empty{padding:24px;text-align:center;color:var(--muted);border:1px dashed var(--line);border-radius:16px;background:#fff}
@media (max-width: 980px){
    .sidebar{position:fixed;left:-300px;top:0;bottom:0;z-index:20;transition:.2s}
    .sidebar.open{left:0}
    .grid-4,.grid-3,.grid-2,.form-row-2,.form-row-3,.filters{grid-template-columns:1fr}
    .topbar{flex-direction:column;align-items:stretch}
}