Please advise what the sentence structure of the following sentences is:

1. I travel light.

Is it SV or SVC? Is light here an adverb modifying verb or an adjective served as a subject complement?

2. I fly first class.

Is it SV or SVO? Is first class here an adverb or a noun served as the object of fly?

Thank you for your attention.
I think they are both SVC (but C is used to signify an adverbial complement as well, I think). I think they both modify the clause 'I travel/fly'.
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Thank you for your reply. But I need further clarification: As far as sentence structure is concerned, are the following two sentences in each pair the same?

I travel light.

Light travels fast.

I fly first class.

I fly American.

I have been learning English. I do know the English but I have to learn Exams because I know about English. It

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