body {
  background:#0f172a;
  color:#fff;
  font-family:Arial;
}
.container {
  width:1000px;
  margin:auto;
}
.card {
  background:#1e293b;
  padding:20px;
  border-radius:12px;
  margin-top:20px;
}
input, select {
  padding:8px;
  margin:5px;
  border-radius:6px;
  border:none;
}
button {
  background:#22c55e;
  color:white;
  padding:10px;
  border:none;
  border-radius:6px;
  cursor:pointer;
}
.table {
  width:100%;
  margin-top:10px;
}
.table th, .table td {
  padding:10px;
  text-align:center;
}
.nav {
  display:flex;
  gap:10px;
}
.nav a {
  color:white;
  text-decoration:none;
  background:#334155;
  padding:8px 12px;
  border-radius:6px;
}