body {
  font-family: "Segoe UI", Arial, sans-serif;
  background: #f4f4f4;
  margin: 0;
}

.container {
  max-width: 500px;
  margin: 40px auto;
  background: #fff;
  padding: 24px;
  border-radius: 10px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

h1 {
  text-align: center;
  color: #2980b9;
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 18px;
}

label {
  display: block;
  margin-bottom: 8px;
  color: #333;
}

input[type="text"],
input[type="email"],
textarea {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  padding: 8px 10px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 1rem;
  margin-bottom: 8px;
  transition: border-color 0.2s;
}

input[type="text"]:focus,
input[type="email"]:focus,
textarea:focus {
  border-color: #2980b9;
  outline: none;
}

.radio-group,
.checkbox-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

button[type="submit"] {
  width: 100%;
  padding: 10px;
  background: #2980b9;
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 1.1rem;
  cursor: pointer;
  transition: background 0.2s;
}

button[type="submit"]:hover {
  background: #21618c;
}

@media (max-width: 600px) {
  .container {
    padding: 12px;
    margin: 16px;
  }
  h1 {
    font-size: 1.3rem;
  }
  input[type="text"],
  input[type="email"],
  textarea {
    font-size: 0.95rem;
    padding: 7px 8px;
  }
}