* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  background-color: #f5f5f5;
  color: #333;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 1rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  text-align: center;
  margin-bottom: 2rem;
  padding: 1rem;
  background-color: #4a90e2;
  color: white;
  border-radius: 5px;
}

main {
  flex: 1;
}

.login-section {
  background-color: white;
  padding: 2rem;
  border-radius: 5px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

h2 {
  margin-bottom: 1.5rem;
  color: #4a90e2;
}

.form-group {
  margin-bottom: 1.5rem;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: bold;
}

input[type="email"],
input[type="text"],
input[type="number"],
input[type="password"] {
  width: 100%;
  padding: 0.8rem;
  border: 1px solid #ddd;
  border-radius: 4px;
}

.radio-group {
  display: flex;
  gap: 1.5rem;
  margin: 0.5rem 0;
}

.radio-label {
  display: flex;
  align-items: center;
  cursor: pointer;
}

input[type="radio"] {
  margin-right: 0.5rem;
}

.button-group {
  display: flex;
  gap: 1rem;
}

button {
  padding: 0.8rem 1.5rem;
  background-color: #4a90e2;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.3s;
}

button:hover {
  background-color: #357abf;
}

#createAccountBtn {
  background-color: #5cb85c;
}

#createAccountBtn:hover {
  background-color: #4cae4c;
}

#message {
  margin-top: 1rem;
  padding: 0.8rem;
  border-radius: 4px;
}

.success {
  background-color: #dff0d8;
  color: #3c763d;
}

.error {
  background-color: #f2dede;
  color: #a94442;
}

footer {
  text-align: center;
  margin-top: 2rem;
  color: #777;
}