body {
            font-family: 'Segoe UI', sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            margin: 0;
        }
     
.login-card {
    background: white;
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    width: 350px;
    text-align: center;
}

h1{
    color: darkblue;
}
h2 { color: #333; margin-bottom: 1.5rem; }
input {
    width: 90%;
    padding: 12px;
    margin: 10px 0;
    border: 1px solid #ddd;
    border-radius: 6px;
}

button {
    width: 98%;
    padding: 12px;
    background-color: #764ba2;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    transition: background 0.3s;
}

button:hover { background-color: #5a387e; }
    .error { color: red; font-size: 0.9rem; margin-top: 10px; 
}