:root{
  --blue:#0b5ed7;
  --blue2:#0a58ca;
  --bg:#f5f7fb;
  --card:#ffffff;
  --text:#1f2a37;
  --muted:#6b7280;
  --border:#e5e7eb;
}

*{box-sizing:border-box}
body{
  margin:0;
  font-family: Arial, Helvetica, sans-serif;
  background:var(--bg);
  color:var(--text);
}
.header{
  background:linear-gradient(90deg,var(--blue),var(--blue2));
  color:#fff;
  padding:14px 16px;
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.brand{font-weight:bold;letter-spacing:1px}
.container{max-width:980px;margin:18px auto;padding:0 14px}
.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:12px;
  padding:16px;
  box-shadow:0 8px 18px rgba(15,23,42,.06);
}
.h1{font-size:18px;margin:0 0 12px 0}
.label{display:block;font-size:13px;color:var(--muted);margin:10px 0 6px}
.input{
  width:100%;
  padding:12px 12px;
  border:1px solid var(--border);
  border-radius:10px;
  outline:none;
  background:#fff;
}
.input:focus{border-color:var(--blue)}
.btn{
  display:inline-block;
  padding:12px 14px;
  border-radius:10px;
  border:0;
  background:var(--blue);
  color:#fff;
  cursor:pointer;
  text-decoration:none;
  font-weight:bold;
}
.btn:hover{filter:brightness(.95)}
.btn.secondary{
  background:#fff;
  color:var(--blue);
  border:1px solid var(--blue);
}
.footer-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
.note{color:var(--muted);font-size:13px}
.error{background:#fee2e2;border:1px solid #fecaca;color:#991b1b;padding:10px;border-radius:10px;margin:10px 0}
.ok{background:#dcfce7;border:1px solid #bbf7d0;color:#166534;padding:10px;border-radius:10px;margin:10px 0}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}
.tile{border:1px solid var(--border);border-radius:12px;padding:14px;background:#fff}
.tile .title{font-weight:bold;margin:0 0 6px}
.tile .desc{margin:0;color:var(--muted);font-size:13px}