body {
  font-family: Arial, sans-serif;
  background: #f4f6f8;
  margin: 0;
  padding: 40px;
}

.card {
  max-width: 420px;
  margin: 0 auto;
  background: #ffffff;
  padding: 24px;
  border-radius: 12px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
}

label {
  display: block;
  margin-bottom: 12px;
}

input {
  width: 100%;
  padding: 10px;
  margin-top: 6px;
  border: 1px solid #d7dce0;
  border-radius: 8px;
  font-size: 14px;
}

button {
  width: 100%;
  padding: 12px;
  background: #1e88e5;
  color: #fff;
  border: 0;
  border-radius: 8px;
  font-size: 15px;
  cursor: pointer;
}

button.secondary {
  background: #4b5563;
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.muted {
  color: #6b7280;
}

.small {
  font-size: 12px;
}

.hidden {
  display: none;
}

hr {
  border: 0;
  border-top: 1px solid #e5e7eb;
  margin: 16px 0;
}