body{margin:0;font-family:Arial,sans-serif;background:#111827;color:#fff}.app{max-width:600px;margin:0 auto;padding:20px}.card{background:#1f2937;padding:20px;border-radius:16px;margin-bottom:16px}.input{width:100%;padding:12px;margin:10px 0 16px;border-radius:10px;border:0}.status{padding:12px;background:#374151;border-radius:10px;margin-bottom:16px}.row{display:flex;gap:10px;flex-wrap:wrap}button{padding:12px 16px;border:0;border-radius:10px;cursor:pointer}.log{background:#374151;padding:10px;border-radius:10px;margin-top:8px}