body{background-color:#000;margin:0;font-family:sans-serif;overflow:hidden}#app{z-index:1;width:100%;height:100%;position:absolute;top:0;left:0}#permission-message{z-index:100;background:#000c;justify-content:center;align-items:center;width:100%;height:100%;display:flex;position:fixed;top:0;left:0}#permission-message.hidden{display:none}.message-content{color:#fff;text-align:center;background:#333;border-radius:8px;padding:20px;font-size:18px}#camera-container{z-index:10;background:#000;border:1px solid #444;width:320px;height:240px;position:fixed;bottom:10px;left:10px;overflow:hidden}#input-video{display:none}#output-canvas{object-fit:contain;width:100%;height:100%}