body {
    font-family: Arial, sans-serif;
    background: #f0f2f5;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}
.login-container {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    width: 300px;
}
.login-container h2 {
    text-align: center;
    margin-bottom: 1.5rem;
}
.form-group {
    margin-bottom: 1rem;
}
.form-group label {
    display: block;
    margin-bottom: 0.5rem;
}
.form-group input {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
}
button {
    width: 100%;
    padding: 0.5rem;
    background: #1890ff;
    border: none;
    color: white;
    border-radius: 4px;
    cursor: pointer;
}
button:hover {
    background: #40a9ff;
}
.error {
    color: red;
    margin-top: 1rem;
    text-align: center;
}