:root { font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: #111827; background:#f3f4f6; }
body { margin:0; }
a { color:#2563eb; text-decoration:none; }
.nav { background:#111827; color:white; padding:14px 24px; display:flex; gap:18px; align-items:center; }
.nav a { color:white; }
.nav .spacer { flex:1; }
.container { max-width:1200px; margin:28px auto; padding:0 18px; }
.card { background:white; border-radius:14px; padding:20px; box-shadow:0 8px 24px rgba(0,0,0,.06); margin-bottom:20px; }
.grid { display:grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap:16px; }
.metric { font-size:32px; font-weight:750; }
.label { color:#6b7280; font-size:14px; }
table { width:100%; border-collapse:collapse; background:white; }
th, td { padding:11px 10px; border-bottom:1px solid #e5e7eb; text-align:left; vertical-align:top; }
th { font-size:13px; color:#6b7280; }
input, select, textarea { width:100%; padding:10px; border:1px solid #d1d5db; border-radius:10px; box-sizing:border-box; }
button, .btn { background:#111827; color:white; border:0; padding:10px 14px; border-radius:10px; cursor:pointer; display:inline-block; }
.btn-danger { background:#991b1b; }
.btn-secondary { background:#4b5563; }
.row { display:grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap:12px; margin-bottom:12px; }
.alert { background:#fef3c7; padding:12px; border-radius:10px; margin-bottom:16px; }
.badge { padding:4px 8px; border-radius:999px; font-size:12px; background:#e5e7eb; }
.ok { background:#dcfce7; color:#166534; }
.fail { background:#fee2e2; color:#991b1b; }
.login { max-width:420px; margin:90px auto; }
.small { font-size:12px; color:#6b7280; }
pre { white-space:pre-wrap; word-break:break-word; }