body, html {
    margin: 0;
    padding: 0;
    height: 100%;
    font-family: Arial, sans-serif;
}

.background {
    background-image: url('https://via.placeholder.com/1920x1080'); /* imagine test */
    background-size: cover;
    background-position: center;
    filter: brightness(0.5);
    position: fixed;
    top: 0; left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.code-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(255,255,255,0.15);
    padding: 30px;
    border-radius: 10px;
    backdrop-filter: blur(10px);
    text-align: center;
    width: 90%;
    max-width: 350px;
}

.code-container input {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    border: none;
    border-radius: 5px;
}

.code-container button {
    width: 100%;
    padding: 12px;
    background: black;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

.code-container button:hover {
    background: #333;
}