body {
  font-family: 'Helvetica Neue', sans-serif;
  background-color: #f8f9fa;
  margin: 0;
  padding: 20px;
  color: #333;
}
.container {
  max-width: 600px;
  margin: auto;
  background: white;
  padding: 20px;
  border-radius: 16px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}
h1 {
  text-align: center;
  font-size: 26px;
}
.question {
  margin-top: 20px;
  font-weight: bold;
}
.options {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.options label {
  background-color: #fff;
  border: 2px solid #ddd;
  border-radius: 12px;
  padding: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 15px;
}
.options input[type="radio"] {
  display: none;
}
.options input[type="radio"]:checked + label {
  border-color: #007aff;
  background-color: #e6f0ff;
}
textarea {
  width: 100%;
  height: 60px;
  border: 1px solid #ccc;
  border-radius: 8px;
  padding: 10px;
  font-size: 14px;
}
.submit {
  margin-top: 20px;
  background: #007aff;
  color: white;
  border: none;
  padding: 12px 20px;
  font-size: 16px;
  width: 100%;
  border-radius: 12px;
  cursor: pointer;
}
.submit:hover {
  background: #005fcc;
}
.hidden {
  display: none;
}