body {
  margin: 0;
  font-family: sans-serif;
  background: #f8fafc;
  color: #0f172a;
}

.options-shell {
  max-width: 440px;
  margin: 40px auto;
  padding: 24px;
  background: white;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

h1 {
  margin-top: 0;
}

label {
  display: block;
  margin-bottom: 16px;
  font-weight: 600;
}

input,
button {
  width: 100%;
  box-sizing: border-box;
  font: inherit;
}

input {
  margin-top: 6px;
  padding: 8px 10px;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
}

button {
  margin-top: 10px;
  border: none;
  border-radius: 8px;
  padding: 10px 12px;
  background: #2563eb;
  color: white;
  font-weight: 600;
  cursor: pointer;
}

.status {
  margin-bottom: 12px;
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 0.86rem;
}

.status.success {
  background: #dcfce7;
  color: #166534;
}

.status.error {
  background: #fee2e2;
  color: #991b1b;
}

.hidden {
  display: none;
}