:root{--brand:#0ea5e9;--brand-dark:#0369a1;}
*{box-sizing:border-box;}
body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Helvetica,Arial,sans-serif;margin:0;background:#f6f7fb;color:#0f172a;}
header,footer{background:#fff;border-bottom:1px solid #e5e7eb;box-shadow:0 1px 0 rgba(0,0,0,0.03);}
header{position:sticky;top:0;z-index:10;}
.topbar{display:flex;gap:12px;align-items:center;justify-content:center;padding:12px 16px;}
.logo{position:absolute;left:16px;top:8px;display:flex;align-items:center;gap:8px;}
.logo img{height:36px;}
.brand{font-weight:800;color:var(--brand-dark);}
.title{font-weight:700;}
.wrap{display:flex;min-height:calc(100vh - 92px);}
nav{width:260px; background:#0b1220;color:#cbd5e1;}
nav .nav-head{display:flex;align-items:center;gap:8px;padding:14px 16px;font-weight:700;border-bottom:1px solid #111827;}
nav a{display:block;padding:10px 14px;color:#cbd5e1;text-decoration:none;border-left:3px solid transparent;}
nav a.active, nav a:hover{background:#0f172a;border-left-color:var(--brand);}
main{flex:1;padding:16px 20px;}
h1{font-size:20px;margin:6px 0 14px 0}
.card{background:#fff;border:1px solid #e5e7eb;border-radius:12px;box-shadow:0 1px 3px rgba(0,0,0,0.04);padding:16px;margin-bottom:14px;}
.grid{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));}
.btn{display:inline-block;padding:8px 12px;border-radius:10px;border:1px solid #e5e7eb;background:#fff;text-decoration:none;color:#0f172a;cursor:pointer;}
.btn.primary{background:var(--brand);border-color:var(--brand);color:white;}
.btn.warn{background:#f59e0b;border-color:#f59e0b;color:#111827;}
.btn.danger{background:#ef4444;border-color:#ef4444;color:white;}
.table{width:100%;border-collapse:collapse;background:#fff;border-radius:10px;overflow:hidden;}
.table th,.table td{padding:8px 10px;border-bottom:1px solid #e5e7eb;text-align:left;font-size:14px;}
.table th{background:#f3f4f6;font-weight:700;}
.muted{color:#64748b;font-size:12px;}
.stat{font-size:28px;font-weight:800;}
.filter{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:10px;}
footer{padding:10px 16px;text-align:center;border-top:1px solid #e5e7eb;}
.login{max-width:460px;margin:60px auto;background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:18px;text-align:center;}
.form-row{display:grid;grid-template-columns:150px 1fr;gap:8px;align-items:center;margin:8px 0;}
input,select,textarea{width:100%;padding:8px;border:1px solid #cbd5e1;border-radius:8px;}
form .actions{display:flex;gap:8px;justify-content:flex-end;margin-top:10px;}
@media print{nav,.actions,.filter,.topbar{display:none} main{padding:0} .card{border:none;box-shadow:none}}