/* Ensure the body takes up the full screen */
body {
    background-color: pink;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh; /* Full height of the viewport */
    margin: 0; /* Remove default margin */
    flex-direction: column; /* Stack elements vertically for small screens */
    text-align: center;
}

/* Center the loading container */
.loading {
    text-align: center;
}

/* Spinner design */
.spinner {
    margin: 10px auto;
    width: 50px;
    height: 50px;
    border: 5px solid #f3f3f3;
    border-top: 5px solid #3498db;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Spinner animation */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive font size for headings */
h1, h2 {
    font-size: 4rem;
    margin: 10px 0;
}
label {
    font-size: 2rem;
}

/* Input fields responsive styling */
input[type="text"], input[type="submit"] {
    width: 80%; /* Adjust width for smaller screens */
    max-width: 300px; /* Prevent input from becoming too wide */
    padding: 10px;
    margin: 10px auto;
    border: 2px solid #3498db;
    border-radius: 5px;
    font-size: 1rem;
    box-sizing: border-box;
}

/* Fullscreen container for intro and container sections */
#intro, #container {
    text-align: center;
    padding: 20px;
    width: 100%; /* Ensure full width for smaller screens */
    max-width: 500px; /* Prevent content from being too wide */
}

/* Make iframe responsive */
iframe {
    width: 90%;
    max-width: 560px;
    height: auto;
    aspect-ratio: 16/9; /* Maintain 16:9 aspect ratio */
    margin: 20px auto;
    display: block;
}

/* Adjust spinner size for smaller screens */
@media (max-width: 768px) {
    .spinner {
        width: 40px;
        height: 40px;
        border-width: 4px;
    }

    h1, h2 {
        font-size: 2rem;
    }
    label {
        font-size: 1rem;
    }
}