body {
    font-family: Arial, sans-serif;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background-color: #222;
    color: #eee;
}
h1 {
    text-align: center;
    margin-bottom: 30px;
    color: #fff;
}
.contenedor-leds {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 20px;
}
.fila-led {
    display: flex;
    justify-content: space-between;
    width: 100%;
    margin-bottom: 30px;
}
.control-led {
    background-color: #222;
    border-radius: 10px;
    padding: 15px;
    width: calc(25% - 20px);
    min-width: 150px;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.encabezado-led {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 15px;
    width: 100%;
}
.titulo-led {
    font-weight: bold;
    margin-bottom: 5px;
    font-size: 1.1em;
}
.rango-led {
    color: #aaa;
    font-size: 0.8em;
    margin-bottom: 10px;
}
.vista-previa-led {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    margin-bottom: 10px;
    transition: all 0.3s ease;
    background-color: currentColor;
}
.contenedor-deslizador {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.deslizador {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    margin-bottom: 10px;
    background: #555;
    outline: none;
}
.deslizador::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #fff;
    cursor: pointer;
}
.visualizador-valor {
    width: 60px;
    text-align: center;
    background: #444;
    color: #fff;
    border: 1px solid #555;
    border-radius: 5px;
    padding: 5px;
    font-size: 0.9em;
}