:root{
  --bg:#f6f8fb;
  --card:#ffffff;
  --text:#0f172a;
  --muted:#475569;
  --accent:#0ea5e9;   /* sky */
  --accent2:#22c55e;  /* green */
  --border:#e2e8f0;
  --shadow: 0 10px 25px rgba(2,8,23,.08);
  --radius: 16px;
  --max: 1100px;
  --font: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}
*{box-sizing:border-box}
body{margin:0;font-family:var(--font);background:var(--bg);color:var(--text)}
.container{max-width:var(--max);margin:0 auto;padding:24px}
.topbar{
  background:linear-gradient(90deg, rgba(14,165,233,.12), rgba(34,197,94,.10));
  border-bottom:1px solid var(--border);
}
.nav{display:flex;gap:14px;align-items:center;justify-content:space-between}
.brand{font-weight:800;letter-spacing:.3px}
.brand small{display:block;color:var(--muted);font-weight:600}
.menu a{color:var(--text);text-decoration:none;padding:10px 12px;border-radius:12px}
.menu a:hover{background:rgba(14,165,233,.10)}
.card{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);box-shadow:var(--shadow);padding:18px
}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:900px){.grid{grid-template-columns:1fr}}
h1{margin:0 0 10px;font-size:28px}
h2{margin:0 0 10px;font-size:18px;color:var(--muted);font-weight:700}
.btn{
  border:0;border-radius:14px;padding:10px 14px;
  background:var(--accent);color:white;font-weight:800;cursor:pointer
}
.btn.secondary{background:#0f172a}
.btn.ghost{background:transparent;color:var(--text);border:1px solid var(--border)}
.input, select{
  width:100%;padding:10px 12px;border-radius:14px;border:1px solid var(--border);
  background:white;font-size:14px
}
.table{width:100%;border-collapse:collapse}
.table th,.table td{padding:10px;border-bottom:1px solid var(--border);text-align:left}
.badge{display:inline-block;padding:4px 10px;border-radius:999px;font-weight:800;font-size:12px}
.badge.ok{background:rgba(34,197,94,.14);color:#166534}
.badge.no{background:rgba(239,68,68,.12);color:#7f1d1d}
.modal{
  position:fixed;inset:0;background:rgba(2,8,23,.55);
  display:none;align-items:center;justify-content:center;padding:18px
}
.modal.open{display:flex}
.modal .box{max-width:520px;width:100%}
.muted{color:var(--muted)}
.row{display:flex;gap:12px}
.row > *{flex:1}