:root{--bg:#f5f6f8;--card:#fff;--text:#1f2937;--muted:#6b7280;--primary:#b00020;--dark:#1f2937;--border:#e5e7eb;}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text)}
.topbar{display:flex;align-items:center;gap:10px;background:var(--dark);color:#fff;padding:10px 14px;position:sticky;top:0;z-index:10}
.brand{font-weight:700}
.menu-btn{background:none;border:none;color:#fff;font-size:22px;cursor:pointer;display:none}
.topright{margin-left:auto;display:flex;gap:12px;align-items:center;font-size:14px}
.topright a{color:#fff}
.layout{display:flex;min-height:calc(100vh - 46px)}
.sidebar{width:230px;background:#2b2f36;color:#fff;padding:12px;display:flex;flex-direction:column;gap:4px}
.sidebar a{color:#e5e7eb;text-decoration:none;padding:8px 10px;border-radius:6px;font-size:14px}
.sidebar a:hover{background:#3a3f47}
.content{flex:1;padding:16px}
.card{background:var(--card);border-radius:10px;padding:16px;margin-bottom:16px;box-shadow:0 1px 3px rgba(0,0,0,.08)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px}
.kpi{background:var(--card);border-radius:10px;padding:14px;text-align:center}
.kpi .n{font-size:24px;font-weight:700}
.kpi .l{font-size:12px;color:var(--muted)}
table{width:100%;border-collapse:collapse;background:var(--card);border-radius:10px;overflow:hidden}
th,td{padding:8px 10px;border-bottom:1px solid var(--border);font-size:14px;text-align:left}
th{background:#f1f2f4}
.btn,button[type=submit]{background:var(--primary);color:#fff;border:none;border-radius:6px;padding:8px 14px;cursor:pointer;font-size:14px}
.btn.secondary{background:#6b7280}
input,select,textarea{width:100%;padding:8px 10px;border:1px solid var(--border);border-radius:6px;font-size:14px;margin-bottom:8px;box-sizing:border-box}
.alert{padding:10px 12px;border-radius:6px;margin-bottom:12px}
.alert.ok{background:#e7f6ec;color:#166534}
.alert.err{background:#fde8e8;color:#991b1b}
.item-card{background:var(--card);border-radius:10px;padding:12px;margin-bottom:10px;border-left:4px solid #ccc}
.st-red{border-left-color:#dc2626;background:#fef2f2}
.st-orange,.st-orange2{border-left-color:#ea580c;background:#fff7ed}
.st-yellow,.st-yellow2{border-left-color:#ca8a04;background:#fefce8}
.st-gray{border-left-color:#9ca3af;background:#f3f4f6}
.st-green{border-left-color:#16a34a;background:#f0fdf4}
@media(max-width:768px){
  .menu-btn{display:block}
  .sidebar{position:fixed;left:-260px;top:46px;bottom:0;transition:left .2s;z-index:9}
  .sidebar.open{left:0}
  table{display:block;overflow-x:auto}
}
.auth-card{max-width:400px;margin:40px auto}