*{box-sizing:border-box;padding:0;margin:0}body,html{max-width:100vw;overflow-x:hidden}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#f5f5f5;color:#333}a{color:inherit;text-decoration:none}.container{max-width:800px;margin:0 auto;padding:2rem}.card{background:#fff;border-radius:8px;padding:2rem;box-shadow:0 2px 8px rgba(0,0,0,.1)}.form-group{margin-bottom:1.5rem}.form-group label{display:block;margin-bottom:.5rem;font-weight:500}.form-group input,.form-group textarea{width:100%;padding:.75rem;border:1px solid #ddd;border-radius:4px;font-size:1rem}.form-group textarea{min-height:200px;font-family:monospace}.btn{padding:.75rem 1.5rem;background:#0070f3;color:#fff;border:none;border-radius:4px;font-size:1rem;cursor:pointer;transition:background .2s}.btn:hover{background:#0051cc}.btn-secondary{background:#666}.btn-secondary:hover{background:#555}.error{color:#d32f2f}.error,.success{margin-top:.5rem}.success{color:#2e7d32}.header{margin-bottom:2rem}.header h1{margin-bottom:.5rem}.header p{color:#666}.table{width:100%;border-collapse:collapse;margin-top:1rem}.table td,.table th{padding:.75rem;text-align:left;border-bottom:1px solid #ddd}.table th{font-weight:600;background:#f9f9f9}