body{margin:0;background:black;color:#0f0;font-family:monospace;}
#matrixCanvas{position:fixed;top:0;left:0;width:100%;height:100%;z-index:-1;}
.card{background:rgba(0,0,0,0.6);padding:20px;margin:100px auto;width:400px;border:1px solid #0f0;box-shadow:0 0 20px #0f0;}
input,button{width:100%;padding:10px;margin-top:10px;background:black;color:#0f0;border:1px solid #0f0;}
button:hover{background:#0f0;color:black;}
pre{background:black;padding:10px;height:300px;overflow:auto;border:1px solid #0f0;}