body{margin:0;font-family:Arial,sans-serif;background:#f7f7f7}header{background:#fff;color:#000;padding:10px 20px}.header-container{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap}.logo img{max-height:50px}.menu-toggle{display:none;font-size:28px;cursor:pointer}.navbar ul{list-style:none;margin:0;padding:10px;display:flex}.navbar ul li{margin-left:20px}.navbar ul li a{color:#050505;text-decoration:none;font-size:16px}.contenedor{background:#fff;padding:20px;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,0.2);width:420px;margin:30px auto}h1{font-size:1.5em;margin-bottom:15px;text-align:center}label{font-weight:bold}input[type="text"]{width:100%;padding:8px;margin:10px 0;border:1px solid #ddd;border-radius:4px}button{background-color:#121213;color:#fff;border:none;padding:10px;width:100%;border-radius:4px;cursor:pointer;font-size:1em}button:hover{background-color:#ef6909}.resultado{margin-top:20px}.error{color:red}.info{margin-top:10px;background:#f0f0f0;padding:10px;border-radius:4px}@media (max-width:768px){.navbar ul{flex-direction:column;width:100%;display:none}.navbar ul li{margin:10px 0}.menu-toggle{display:block;margin-left:auto;margin-top:-50px;padding:10px}.navbar.active ul{display:flex}.header-container{flex-direction:column;align-items:flex-start;justify-content:space-between}.contenedor{width:90%}.logo img{max-height:50px}}