.shortener{max-width:480px;margin:40px auto;font-family:sans-serif}.input-row{gap:8px;display:flex}.input-row input{flex:1;padding:8px}.input-row button{padding:8px 16px}.error{color:#dc143c}.links{margin-top:16px;padding:0;list-style:none}.links li{margin-bottom:12px}.long-url{color:#666;font-size:13px}.note{color:#999;font-size:12px}