body {
    font-family: 'Poppins', sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background: #0b266a; /* Primary dark blue color */
    color: #fff;
    text-align: center;
    overflow: hidden; /* Prevents scrollbars if the pattern is larger than the screen */
}

/* Animated background pattern */
@keyframes movePattern {
    0% { 
        background-position: 0 0; 
        transform: rotate(0deg) scale(1);
    }
    50% { 
        transform: rotate(180deg) scale(1.5); /* Rotates halfway and scales up */
    }
    100% { 
        background-position: 1000px 1000px; 
        transform: rotate(360deg) scale(1); /* Completes the rotation and returns to original scale */
    }
}

body::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    right: 0; bottom: 0;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><polygon fill="%23ffff00" points="50,0 100,50 50,100 0,50"/><polygon fill="%230b266a" points="50,0 100,0 100,100 50,100"/><polygon fill="%230b266a" points="0,0 50,0 50,100 0,100"/></svg>'); /* Geometric pattern SVG */
    background-size: 50px 50px; /* Size of the pattern */
    opacity: 0.2; /* Opacity of the pattern for subtlety */
    animation: movePattern 20s linear infinite; /* Animation for the movement and transformation */
    z-index: -1;
    will-change: background-position, transform; /* Optimizes for animations */
}

.container {
    width: 60%; /* Larger container size */
    max-width: 800px; /* Maximum width to ensure it doesn't get too large on bigger screens */
    margin: 0 auto;
    padding: 3rem; /* Increased padding for a larger container */
    background-color: rgba(255, 255, 255, 0.1); /* Lighter background for the container */
    backdrop-filter: blur(10px);
    border-radius: 20px; /* Slightly larger radius for a smoother curve */
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.3); /* Stronger shadow for depth */
    transition: transform 0.3s ease-in-out;
}

h1 {
    font-weight: 600;
    font-size: 2.5rem; /* Slightly larger font for the main heading */
    margin-bottom: 1rem;
}

.product-description p {
    font-size: 1.2rem; /* Increased font size for better readability */
    line-height: 1.6; /* Increased line height for improved text flow */
    margin-bottom: 1.5rem; /* More space between paragraphs */
}

.note p{
    font-size: 0.8rem; /* Smaller font size for the note */
    opacity: 0.8; /* More visibility for the note */
    margin-bottom: 2rem; /* Additional space above the button */
}

.chatgpt-plus-link {
    color: #ffff00; /* Accent color for the link */
    text-decoration: none; /* No underline for a clean look */
    transition: color 0.3s ease;
}

.chatgpt-plus-link:hover {
    color: #e6e600; /* Slightly darker yellow on hover */
    text-decoration: underline; /* Underline on hover for better UX */
}

.payment-button {
    padding: 1rem 2rem; /* Larger padding for a more prominent button */
    background-color: #ffff00; /* Accent color for the button */
    color: #0b266a; /* Text color to contrast the button */
    text-decoration: none;
    border: none;
    border-radius: 30px; /* More pronounced border radius for the button */
    font-weight: 600;
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2); /* Adjusted shadow for aesthetic */
    transition: all 0.3s ease-in-out;
}

.payment-button:hover {
    background-color: #e6e600; /* Slightly darker yellow on hover */
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3); /* Increased shadow on hover */
    transform: translateY(-3px);
}

@media (max-width: 768px) {
    .container {
        width: 80%; /* Slightly reduced width for tablet devices */
        padding: 2rem;
    }
}

@media (max-width: 480px) {
    .container {
        width: 95%; /* More width for mobile devices for better use of space */
        padding: 1.5rem;
    }

    h1 {
        font-size: 2rem; /* Adjusted size for mobile viewing */
    }
    .product-description p, .note {
        font-size: 1rem; /* Adjusted size for mobile viewing */
    }
}