body {
  font-family: 'Segoe UI', sans-serif;
  background: #f5f5f5;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}
.login-container {
  background: white;
  padding: 30px 40px;
  border-radius: 12px;
  box-shadow: 0 0 20px rgba(0,0,0,0.1);
  max-width: 400px;
  width: 100%;
  text-align: center;
}
h2 {
  color: #007BFF;
  margin-bottom: 20px;
}
label {
  display: block;
  text-align: left;
  margin: 10px 0 5px;
  font-weight: bold;
  color: #333;
}
input {
  width: 100%;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 8px;
  margin-bottom: 15px;
  transition: border 0.2s;
}
input:focus {
  border-color: #007BFF;
  outline: none;
}
button {
  background-color: #007BFF;
  color: white;
  border: none;
  padding: 12px 20px;
  font-size: 16px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.3s;
}
button:hover {
  background-color: #0056b3;
}
.error {
  background-color: #ff6f00;
  color: white;
  padding: 10px;
  border-radius: 8px;
  margin-bottom: 15px;
}