body {
    background-color: #000;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    font-family: Arial, sans-serif;
    overflow-x: hidden;
}

.container {
    background-color: #fff;
    color: #000;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.2);
    min-width: 320px;
    position: relative;
    z-index: 10;
    box-sizing: border-box;
}

h2,
h3,
h4 {
    text-align: center;
    color: #000;
    margin-bottom: 20px;
}

.menu-btn {
    position: absolute;
    left: 10px;
    top: 10px;
    background: rgb(255, 255, 255);
    color: black;
    border: none;
    border-radius: 4px;
    width: 40px;
    height: 40px;
    font-size: 20px;
    cursor: pointer;
    z-index: 1101;
}

.menu-btn:hover {
    background-color: rgb(255, 255, 255);
}


.sidebar {
    position: fixed;
    top: 0;
    left: -100%;
    height: 100%;
    background: #111;
    transition: left 0.3s ease;
    z-index: 1100;
    padding: 20px;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.5);
    box-sizing: border-box;
    width: fit-content;
    max-width: 90vw;
    min-width: 220px;
}

.sidebar.open {
    left: 0;
}

.sidebar .close-btn {
    position: relative;
    background: #444;
    color: #fff;
    border: none;
    border-radius: 4px;
    width: 30px;
    height: 30px;
    font-size: 16px;
    cursor: pointer;
    margin-left: auto;
    display: block;
    margin-bottom: 20px;
}

.sidebar a {
    color: white;
    text-decoration: none;
    display: block;
    padding: 10px 0;
    margin: 10px 0;
    font-size: 16px;
}

button {
    background-color: #007bff;
    color: #fff;
    padding: 10px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    width: 100%;
    font-size: 16px;
    margin-top: 20px;
}

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

button:disabled {
    background-color: #cccccc;
    cursor: not-allowed;
}

@media (max-width: 768px) {
    .container {
        padding: 15px;
        min-width: unset;
        width: 100%;
        border-radius: 0;
    }

    .menu-btn {
        width: 36px;
        height: 36px;
        font-size: 18px;
    }

    .sidebar {
        width: 80%;
        max-width: 300px;
    }
}