body {
  font-family: Arial, sans-serif;
}

.card {
  background: white;
  padding: 1.5rem;
  border-radius: 0.75rem;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  width: 100%;
  max-width: 400px;
}

label {
  display: block;
  margin-top: 1rem;
  margin-bottom: 0.25rem;
  font-size: 0.9rem;
  font-weight: 600;
}

input, select {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid #ccc;
  border-radius: 0.5rem;
}

.btn {
  background: #2563eb;
  color: white;
  padding: 0.75rem;
  border-radius: 0.5rem;
  font-weight: bold;
  margin-top: 1rem;
  cursor: pointer;
}

.btn:hover {
  background: #1d4ed8;
}

.btn-secondary {
  background: #6b7280;
  color: white;
  padding: 0.75rem;
  border-radius: 0.5rem;
  font-weight: bold;
  cursor: pointer;
}

.btn-secondary:hover {
  background: #4b5563;
}

.hidden {
  display: none;
}

@media (max-width: 640px) {
  .card {
    max-width: 100%;
    margin: 1rem;
    padding: 1rem;
  }
}