body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #111;
    color: white;
}

header {
    background: #1a1a1a;
    padding: 20px;
    text-align: center;
}

nav {
    display: flex;
    justify-content: center;
    gap: 15px;
    padding: 10px;
    background: #222;
}

nav button {
    padding: 10px 20px;
    border: none;
    background: #00bcd4;
    color: black;
    font-weight: bold;
    cursor: pointer;
    border-radius: 5px;
}

nav button:hover {
    background: #0097a7;
}

.seccion {
    display: none;
    padding: 20px;
}

.activa {
    display: block;
}

.estado-card {
    background: #222;
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    margin-bottom: 20px;
    font-size: 22px;
}

canvas {
    background: white;
    border-radius: 10px;
}

footer {
    text-align: center;
    padding: 10px;
    background: #1a1a1a;
}