:root{
  --bg:#f4f6fb; --panel:#fff; --ink:#1f2937; --muted:#6b7280;
  --brand:#1d4ed8; --brand-d:#1e3a8a; --line:#e5e7eb; --ok:#059669;
  --warn:#d97706; --bad:#dc2626; --sidebar:#0f172a; --sidebar-2:#1e293b;
}
*{box-sizing:border-box}
body{margin:0;font-family:'Segoe UI',system-ui,Arial,sans-serif;background:var(--bg);color:var(--ink);font-size:14px}
a{color:var(--brand);text-decoration:none}
.layout{display:flex;min-height:100vh}
/* sidebar */
.sidebar{width:240px;background:var(--sidebar);color:#cbd5e1;flex-shrink:0;position:fixed;height:100vh;overflow-y:auto}
.sidebar .brand{padding:16px 18px;border-bottom:1px solid #1e293b;display:flex;align-items:center;gap:12px;text-decoration:none;transition:background .15s}
.sidebar .brand:hover{background:#16213a}
.sidebar .brand-logo{width:42px;height:42px;border-radius:11px;background:#fff;display:flex;align-items:center;justify-content:center;flex-shrink:0;box-shadow:0 2px 8px rgba(0,0,0,.3)}
.sidebar .brand-logo img{width:30px;height:30px;display:block}
.sidebar .brand-text{display:flex;flex-direction:column;line-height:1.1;min-width:0}
.sidebar .brand-title{font-weight:800;font-size:16px;color:#fff;letter-spacing:.01em}
.sidebar .brand-sub{font-size:10px;color:#64748b;text-transform:uppercase;letter-spacing:.09em;margin-top:3px;white-space:nowrap}
.sidebar nav{padding:10px 0}
.sidebar .nav-group{padding:8px 20px 4px;font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:#475569}
.sidebar a.item{display:flex;align-items:center;gap:10px;padding:10px 20px;color:#cbd5e1;font-size:13.5px}
.sidebar a.item:hover{background:var(--sidebar-2);color:#fff}
.sidebar a.item.active{background:var(--brand);color:#fff;border-left:3px solid #93c5fd}
/* main */
.main{margin-left:240px;flex:1;display:flex;flex-direction:column;min-width:0}
.topbar{background:#fff;border-bottom:1px solid var(--line);padding:12px 24px;display:flex;justify-content:space-between;align-items:center;position:sticky;top:0;z-index:10}
.topbar .title{font-size:18px;font-weight:600}
.topbar .user{display:flex;align-items:center;gap:12px;font-size:13px}
.content{padding:24px;flex:1}
/* cards / stats */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:16px;margin-bottom:24px}
.stat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 20px}
.stat .label{color:var(--muted);font-size:12.5px;text-transform:uppercase;letter-spacing:.03em}
.stat .value{font-size:28px;font-weight:700;margin-top:6px}
.stat .ico{float:right;width:42px;height:42px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:20px;color:#fff}
.card{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:20px}
.card .card-head{padding:14px 20px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}
.card .card-head h3{margin:0;font-size:15px}
.card .card-body{padding:20px}
/* table */
table.tbl{width:100%;border-collapse:collapse;font-size:13.5px}
table.tbl th,table.tbl td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}
table.tbl th{background:#f8fafc;color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.03em}
table.tbl tr:hover td{background:#fafbfd}
/* badges */
.badge{display:inline-block;padding:3px 10px;border-radius:20px;font-size:11.5px;font-weight:600}
.badge.green{background:#d1fae5;color:#065f46}
.badge.blue{background:#dbeafe;color:#1e40af}
.badge.amber{background:#fef3c7;color:#92400e}
.badge.red{background:#fee2e2;color:#991b1b}
.badge.gray{background:#e5e7eb;color:#374151}
/* forms */
.form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-bottom:4px}
.field{margin-bottom:16px}
.field label{display:block;font-weight:600;margin-bottom:6px;font-size:13px}
.field input,.field select,.field textarea{width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:8px;font-size:14px;font-family:inherit;background:#fff}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(29,78,216,.12)}
.field .hint{font-size:12px;color:var(--muted);margin-top:4px}
.checks{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:8px}
.checks label{display:flex;align-items:center;gap:8px;font-weight:400;font-size:13.5px}
.checks input{width:auto}
/* buttons */
.btn{display:inline-flex;align-items:center;gap:6px;padding:9px 16px;border-radius:8px;border:1px solid transparent;font-size:13.5px;font-weight:600;cursor:pointer;background:var(--brand);color:#fff}
.btn:hover{background:var(--brand-d)}
.btn.sm{padding:6px 11px;font-size:12.5px}
.btn.ghost{background:#fff;border-color:var(--line);color:var(--ink)}
.btn.ghost:hover{background:#f8fafc}
.btn.danger{background:var(--bad)}
.btn.danger:hover{background:#991b1b}
.btn.ok{background:var(--ok)}
/* alerts */
.alert{padding:12px 16px;border-radius:8px;margin-bottom:18px;font-size:13.5px}
.alert.success{background:#d1fae5;color:#065f46;border:1px solid #6ee7b7}
.alert.error{background:#fee2e2;color:#991b1b;border:1px solid #fca5a5}
/* login */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#1e3a8a,#1d4ed8)}
.login-box{background:#fff;border-radius:16px;padding:36px;width:380px;box-shadow:0 20px 50px rgba(0,0,0,.25)}
.login-box h1{margin:0 0 4px;font-size:22px}
.login-box p.sub{margin:0 0 24px;color:var(--muted);font-size:13px}
.toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;gap:12px;flex-wrap:wrap}
.toolbar form{display:flex;gap:8px;flex-wrap:wrap}
.toolbar input,.toolbar select{padding:8px 10px;border:1px solid var(--line);border-radius:8px;font-size:13px}
.pagination{display:flex;gap:6px;margin-top:16px}
.pagination a,.pagination span{padding:7px 12px;border:1px solid var(--line);border-radius:7px;font-size:13px;background:#fff}
.pagination .cur{background:var(--brand);color:#fff;border-color:var(--brand)}
.muted{color:var(--muted)}
.right{text-align:right}
@media(max-width:820px){.sidebar{left:-240px;transition:.2s}.sidebar.open{left:0}.main{margin-left:0}}