* {
box-sizing: border-box;
font-family: Arial, sans-serif;
margin: 0;
padding: 0;
}
body {
background: #f4f4f9;
padding: 20px;
}
.contenedor {
background: #fff;
border-radius: 8px;
margin: 0 auto;
max-width: 600px;
padding: 20px;
box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}
h1 {
	color: #333;
margin-bottom: 20px;
}
h2 {
color: #555;
margin-top: 20px;
margin-bottom: 10px;
}
button {
background: #4f46e5;
border: none;
border-radius: 4px;
color: #fff;
cursor: pointer;
padding: 10px 16px;
font-size: 14px;
}
button:hover {
background: #4338ca;
}
input {
border: 1px solid #ccc;
border-radius: 4px;
margin-bottom: 10px;
padding: 10px;
width: 100%;
}
ul {
list-style: none;
}
li {
background: #f9f9fb;
border: 1px solid #eee;
border-radius: 4px;
margin-bottom: 8px;
padding: 10px;
}
#mensaje {
color: #4f46e5;
margin-top: 15px;
min-height: 20px;
}
.barra-usuario {
display: flex;
align-items: center;
justify-content: space-between;
margin-bottom: 20px;
}
#nombre-usuario { color: #555; font-weight: bold; }
.oculto { display: none !important; }
button:disabled {
background: #a5a5b8;
cursor: not-allowed;
}