/* Animated gradient background */
body {
    margin: 0;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(45deg, black, red);
    background-size: 400% 400%;
    animation: gradientAnimation 15s ease infinite;
}

@keyframes gradientAnimation {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Login form styling */
#login_form {
    background: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
    text-align: center;
}

#login_form h1 {
    color: white;
    margin-bottom: 20px;
}

#login_form input[type="text"],
#login_form input[type="password"] {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border: none;
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

#login_form input[type="submit"] {
    width: 100%;
    padding: 10px;
    border: none;
    border-radius: 5px;
    background: red;
    color: white;
    cursor: pointer;
    transition: background 0.3s ease;
}

#login_form input[type="submit"]:hover {
    background: darkred;
}