*{box-sizing:border-box}
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:#f4f6f8;color:#1f2937}
.sidebar{position:fixed;left:0;top:0;bottom:0;width:230px;background:#101827;color:#fff;padding:18px}
.brand{font-size:22px;font-weight:700;margin-bottom:28px;line-height:1.1}
.brand span{font-size:13px;color:#94a3b8}
.sidebar a{display:block;color:#cbd5e1;text-decoration:none;padding:11px 10px;border-radius:10px;margin:4px 0}
.sidebar a:hover{background:#1e293b;color:#fff}
.main{margin-left:230px;padding:22px}
.topbar{height:54px;background:#fff;border-radius:14px;padding:16px 20px;display:flex;justify-content:space-between;box-shadow:0 1px 4px #0001;margin-bottom:18px}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.card{background:#fff;border-radius:14px;padding:18px;box-shadow:0 1px 4px #0001;margin-bottom:16px}
.metric{font-size:30px;font-weight:700;margin-top:8px}
.muted{color:#64748b;font-size:13px}
table{width:100%;border-collapse:collapse;background:#fff;border-radius:14px;overflow:hidden}
th,td{padding:12px;border-bottom:1px solid #e5e7eb;text-align:left;font-size:14px}
th{background:#f8fafc}
.btn{display:inline-block;padding:8px 12px;border-radius:9px;background:#2563eb;color:white;text-decoration:none;border:0;cursor:pointer;font-size:13px}
.btn.red{background:#dc2626}
.btn.green{background:#16a34a}
.btn.gray{background:#64748b}
form.inline{display:inline}
input,select,textarea{width:100%;padding:10px;border:1px solid #cbd5e1;border-radius:10px;margin:6px 0 12px}
label{font-size:13px;color:#334155;font-weight:600}
.row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.alert{padding:12px;border-radius:10px;margin-bottom:12px}
.alert.danger{background:#fee2e2;color:#991b1b}
.alert.ok{background:#dcfce7;color:#166534}
.login-body{display:flex;align-items:center;justify-content:center;height:100vh;background:#0f172a}
.login-card{background:#fff;width:380px;border-radius:20px;padding:28px;box-shadow:0 20px 60px #0005}
.login-card h1{margin:0}
.login-card button{width:100%;padding:12px;border:0;border-radius:10px;background:#2563eb;color:#fff;font-weight:700}
.badge{padding:5px 8px;border-radius:20px;font-size:12px}
.badge.ok{background:#dcfce7;color:#166534}
.badge.bad{background:#fee2e2;color:#991b1b}
.badge.warn{background:#fef3c7;color:#92400e}