body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #0f172a;
  color: #e2e8f0;
}
.container {
  max-width: 760px;
  margin: 24px auto;
  padding: 16px;
  background: #111827;
  border-radius: 12px;
}
label {
  display: block;
  margin: 12px 0 6px;
}
input, select, textarea, button {
  width: 100%;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid #334155;
  background: #0b1220;
  color: #e2e8f0;
}
button {
  margin-top: 14px;
  cursor: pointer;
  background: #14532d;
  border-color: #166534;
}