body { 
    font-family: sans-serif; 
    display: flex; 
    justify-content: center; 
    align-items: center;
    height: 100vh;
    background: #f4f4f9; 
    margin: 0;
}

.login-box { 
    background: white;
     padding: 2rem;
     border-radius: 8px; 
     box-shadow: 0 4px 6px rgba(0,0,0,0.1); 
     width: 100%; max-width: 300px; 
}

h2 { 
    margin-top: 0;
    text-align: center; 
}

input { 
    display: block;
    width: 100%;
    margin-bottom: 1rem;
    padding: 0.5rem;
    box-sizing: border-box;
}

button { 
    width: 100%;
    padding: 0.5rem;
    background: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

button:hover { 
    background: #0056b3;
}

.error { 
    color: red;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    text-align: center;
}