body {
    background-color: #f5f5f5;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}
.login-card {
    max-width: 400px;
    width: 100%;
    padding: 2rem;
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}