* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

body {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: linear-gradient(135deg, #667eea, #764ba2);
}

.box {
  background: #ffffff;
  width: 320px;
  padding: 25px;
  border-radius: 10px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
  text-align: center;
}

.box h2 {
  margin-bottom: 20px;
  color: #333;
}

.box input {
  width: 100%;
  padding: 10px;
  margin: 10px 0;
  border: 1px solid #ccc;
  border-radius: 5px;
}

.box button {
  width: 100%;
  padding: 10px;
  background: #667eea;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

.box button:hover {
  background: #5a67d8;
}

.error {
  font-size: 14px;
  color: red;
  margin-top: 8px;
}

.box a {
  display: block;
  margin-top: 15px;
  text-decoration: none;
  color: #667eea;
}