/* 📟 Retro 1980s Green Terminal UI */
body {
    background-color: black;
    color: #00FF00;
    font-family: 'Courier New', monospace;
    text-align: center;
    margin: 0;
    padding: 0;
}

header {
    background-color: #003300;
    padding: 15px;
}

h1 {
    font-size: 28px;
    text-transform: uppercase;
}

nav a {
    color: #00FF00;
    text-decoration: none;
    margin: 0 15px;
    font-size: 18px;
}

nav a:hover {
    text-decoration: underline;
}

main {
    margin: 20px;
    font-size: 20px;
}

pre {
    font-size: 16px;
    font-weight: bold;
    color: #00FF00;
    white-space: pre-wrap;
    margin: 20px auto;
}

.download-btn {
    display: block;
    background-color: #003300;
    color: #00FF00;
    border: 2px solid #00FF00;
    padding: 10px;
    margin: 10px auto;
    width: 200px;
    text-decoration: none;
    font-size: 18px;
    font-weight: bold;
}

.download-btn:hover {
    background-color: #005500;
}

.hidden {
    display: none;
}

footer {
    background-color: #003300;
    padding: 10px;
    position: fixed;
    bottom: 0;
    width: 100%;
    font-size: 14px;
}

@keyframes flicker {
    0% { opacity: 1; }
    50% { opacity: 0.8; }
    100% { opacity: 1; }
}

body {
    animation: flicker 0.15s infinite alternate;
    text-shadow: 0px 0px 5px #00FF00;
}