body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f0f0f0;
}
.form-container {
  max-width: 400px;
  margin: 5vh auto;
  background: white;
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}
input {
  display: block;
  width: 80%;
  margin-bottom: 1rem;
  padding: 0.75rem;
  border: 1px solid #ccc;
  border-radius: 5px;
}
button {
  background: #10b981;
  color: white;
  padding: 0.75rem;
  width: 80%;
  border: none;
  border-radius: 5px;
  font-weight: bold;
  cursor: pointer;
}
button:hover {
  background: #0e9e6e;
}
.error-msg {
  color: red;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}
@media (max-width: 480px) {
  .form-container {
    margin: 2vh 1rem;
    padding: 1rem;
  }
}