* { box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial; background:#f7f7f9; color:#222; padding:20px; }
main { max-width:800px; margin:0 auto; background:white; padding:20px; border-radius:6px; box-shadow:0 2px 8px rgba(0,0,0,0.06); }
h1 { margin-top:0 }
button { padding:8px 12px; border-radius:4px; border:1px solid #ccc; background:#fff; cursor:pointer }
#result { margin-top:12px; color:#006600 }
#uploadsList { margin-top:8px }