body {
    font-family: Arial, sans-serif;
    background-color: #f7f7f7;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    box-sizing: border-box;
}

.container {
    background-color: #ffffff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    box-sizing: border-box;
    margin: 10px;
}

h1 {
    text-align: center;
    color: #333333;
    margin-bottom: 20px;
}

label {
    display: block;
    font-size: 14px;
    color: #333333;
    margin-bottom: 5px;
}

input[type="text"], input[type="password"] {
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    border: 1px solid #dddddd;
    border-radius: 5px;
    box-sizing: border-box;
    font-size: 14px;
    color: #333333;
}

input[type="text"]:focus, input[type="password"]:focus {
    border-color: #007bff;
    outline: none;
}

button {
    width: 100%;
    padding: 10px;
    background-color: #007bff;
    border: none;
    border-radius: 5px;
    color: #ffffff;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #0056b3;
}

.notification {
    padding: 10px;
    margin-bottom: 15px;
    border-radius: 5px;
    text-align: center;
    box-sizing: border-box;
}

.notification.success {
    background-color: #d4edda;
    color: #155724;
}

.notification.error {
    background-color: #f8d7da;
    color: #721c24;
}
/* Popup styles */
.popup {
    display: none;
    position: fixed;
    top: 30%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fd7c7c;
    color: white;
    padding: 20px;
    border-radius: 10px;
    z-index: 1000;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.3);
}

.popup p {
    margin: 0;
    font-size: 1rem;
}
/* Responsive Design */
@media (max-width: 600px) {
    .container {
        padding: 15px;
        max-width: 90%;
    }

    h1 {
        font-size: 1.5rem;
    }

    input[type="text"], input[type="password"] {
        font-size: 1rem;
        padding: 8px;
    }

    button {
        font-size: 1rem;
        padding: 8px;
    }
}