body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: url('atslpBlack.jpg') no-repeat center center fixed;
    background-size: cover;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh; /* Full viewport height */
    margin: 0;
    overflow: hidden; /* Prevent background from moving */
}

.container {
    width: 30%;
    background: rgba(25, 25, 25, 0.7);
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0px 5px 15px rgba(0, 0, 0, 1);
}

h1 {
    color: white;
    font-size: 30px;
}

input {
    width: 150px;
}

select {
    width: 70px;
}

label {
    color: white;
    font-weight: bold;
}

button {
    font-weight: bold;
    padding: 10px 20px;
    border-radius: 10px;
    border: 1px solid darkblue;
    background: blue;
    color: white;
    font-size: 16px;
    cursor: pointer;
}

button:hover {
    background: rgb(0, 117, 200);
}

/* ---- Mobile Responsive CSS ---- */
@media (max-width: 768px) {
    body {
        display: flex;
        align-items: center;
        justify-content: center;
        height: 100vh;
        background-attachment: fixed; /* Prevent background bleeding */
    }

    .container {
        width: 150%; /* Increased scale of container */
        margin: 0 auto; /* Center horizontally */
        padding: 20px;
    }

    h1 {
        font-size: 24px;
    }

    input, select {
        width: 90%;
        font-size: 16px;
        padding: 8px;
    }

    button {
        width: 100%;
        padding: 12px;
        font-size: 18px;
    }
}