body {
    font-family: 'Segoe UI', sans-serif;
    background: linear-gradient(to right, #2980b9, #6dd5fa);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.login-container {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    text-align: center;
    width: 300px;
}

input[type="text"], input[type="password"] {
    width: 90%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ddd;
    border-radius: 5px;
}

button {
    background: #2980b9;
    color: white;
    border: none;
    padding: 10px 20px;
    margin-top: 10px;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background: #2573a6;
}

.error {
    color: red;
    margin-bottom: 10px;
}

.logout-button {
    display: inline-block;
    margin-top: 20px;
    padding: 10px 20px;
    background: #e74c3c;
    color: white;
    text-decoration: none;
    border-radius: 5px;
}