/* Configuración estructural base */
body { font-family: Arial, sans-serif; background-color: #f4f4f9; color: #333; padding: 20px; margin: 0; }
h1 { color: #2c3e50; border-bottom: 2px solid #2c3e50; padding-bottom: 10px; }
h2 { color: #2c3e50; margin-top: 5px; font-size: 1.3rem; }
.ejercicio { background-color: white; border-radius: 8px; padding: 20px; box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1); }

.explicacion {
    background-color: #ebf8ff;
    padding: 10px 15px;
    border-left: 4px solid #3182ce;
    margin-bottom: 20px;
    border-radius: 0 4px 4px 0;
    color: #2b6cb0;
}

.btn-interactivo {
    padding: 12px 20px;
    background-color: #3182ce;
    color: white;
    border: none;
    border-radius: 4px;
    font-weight: bold;
    cursor: pointer;
}
.btn-interactivo:hover { background-color: #2b6cb0; }

.area-render {
    margin-top: 20px;
    min-height: 100px;
    padding: 20px;
    border: 2px dashed #cbd5e0;
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

/* Estilo para los nodos creados */
.nodo-raul {
    background-color: #3182ce;
    color: white;
    padding: 20px;
    width: 150px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    gap: 10px;
}

.btn-eliminar {
    background-color: #e53e3e;
    color: white;
    border: none;
    padding: 5px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
}