:root{color-scheme:dark}
body{margin:0;font-family:system-ui,sans-serif;background:#0b0f14;color:#e6edf3}
main{max-width:32rem;margin:auto;padding:1.5rem;display:grid;gap:1rem}
h1{margin:0;font-size:1.4rem;color:#0dbd8b}
form{display:flex;gap:.5rem}
input{flex:1;padding:.7rem;border-radius:.5rem;border:1px solid #30363d;background:#161b22;color:inherit}
button,a#download{padding:.8rem 1rem;border:0;border-radius:.5rem;background:#0dbd8b;color:#fff;font-weight:600;text-align:center;text-decoration:none;cursor:pointer}
button:disabled{opacity:.5}
video{width:100%;border-radius:.5rem;background:#000}
#status.error{color:#ff7b72}