/* Background animated rainbow gradient with stars */
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background: linear-gradient(45deg, red, orange, yellow, green, blue, indigo, violet);
    background-size: 400% 400%;
    animation: rainbowAnimation 5s ease infinite;
    color: #fff; /* White text for contrast */
    position: relative;
    overflow: hidden; /* Hide anything outside the body */
}

/* Create a starry background */
body::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('https://www.transparenttextures.com/patterns/stardust.png'); /* Star pattern */
    opacity: 0.5; /* Transparent stars */
    z-index: -1; /* Place it behind the content */
    animation: moveStars 100s linear infinite; /* Animate stars */
}

/* Define the rainbow animation */
@keyframes rainbowAnimation {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* Define the star movement animation */
@keyframes moveStars {
    0% {
        background-position: 0% 0%;
    }
    100% {
        background-position: 100% 100%;
    }
}

/* Dark-themed container */
.container {
    background-color: rgba(20, 20, 20, 0.9); /* Dark background with slight transparency */
    padding: 40px; /* Increased padding for a bigger container */
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.4);
    width: 85%; /* Adjusted width to be a little bigger */
    max-width: 700px; /* Increased max-width for more space */
    border-radius: 10px;
    backdrop-filter: blur(10px); /* Optional: adds a slight blur effect */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

/* Heading style */
h1 {
    text-align: center;
    color: #fff; /* White heading */
}

/* Textarea with a dark theme */
textarea {
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    border-radius: 5px;
    border: 1px solid #444; /* Dark border */
    background-color: #333; /* Dark background */
    color: #fff; /* White text */
    font-size: 16px;
    resize: none; /* Prevent resizing */
    height: 60px; /* Increased height for bigger text area */
}

/* Button with dark theme */
button {
    width: 100%;
    padding: 10px;
    background-color: #4CAF50; /* Green button */
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
}

button:hover {
    background-color: #45a049;
}

/* Output container */
#outputContainer {
    margin-top: 20px;
    padding: 10px;
    background-color: #444; /* Darker background for output */
    border-radius: 5px;
    height: 60px; /* Increased height for bigger output container */
    width: 100%; /* Ensure it fills the width of the container */
    overflow-y: auto; /* Enable scrolling if content exceeds container height */
}

h2 {
    margin-top: 0;
    color: #fff; /* White text for subheadings */
}

#outputText {
    color: #ddd; /* Light gray text for the output */
    font-size: 18px;
    white-space: pre-wrap;
    height: 100%; /* Make it fill the height of the output container */
    overflow-y: auto; /* Enable scrolling if content exceeds container height */
}

/* Center the container vertically and horizontally */
html, body {
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}