Per quanto riguarda la delibera, tutto è chiaro.

Literally, per quanto riguarda is something like as far as ... concerns or with regard to ....

In natural English, it usually means:

• as for
• regarding
• concerning
• when it comes to

So Per quanto riguarda la delibera, tutto è chiaro means As for the resolution / regarding the resolution, everything is clear.

It is a very common linking expression in Italian, especially in slightly formal or neutral speech.

It is neutral to slightly formal. You will hear it in:

• meetings
• emails
• presentations
• news or official speech
• careful everyday conversation

In more casual speech, Italians might also say:

• riguardo a ...
• sulla questione di ...
• quanto a ...

But per quanto riguarda is perfectly natural and very common.

Italian often uses the definite article where English may or may not use one.

Here, la delibera means the resolution / the decision / the formal motion and refers to a specific one already known in context.

So:

• la delibera = the resolution
• una delibera = a resolution

If you are talking about a particular decision already mentioned, la delibera is exactly what you would expect.

Delibera is a somewhat formal word. It usually refers to an official decision, resolution, or measure approved by a group or authority, such as:

• a city council
• a board
• an administrative body
• a committee

Depending on context, it may be translated as:

• resolution
• decision
• formal approval
• measure

So it is not just any everyday decision. It often has an institutional or bureaucratic flavor.

Because tutto here means everything and works as a singular masculine pronoun.

So:

• tutto = everything
• è chiaro = is clear

That is why the adjective is masculine singular: chiaro.

Compare:

• Tutto è chiaro. = Everything is clear.
• La situazione è chiara. = The situation is clear.

In the second sentence, situazione is feminine singular, so the adjective becomes chiara.

This is similar to English everything, which is grammatically singular even though it refers to many things.

In Italian:

• tutto = everything → singular
• tutti = everyone / all of them / all → plural, depending on context

So:

• Tutto è chiaro. = Everything is clear.
• Tutti sono d'accordo. = Everyone agrees / They all agree.

Yes. Both are possible:

• Tutto è chiaro
• È tutto chiaro

They mean the same thing.

The difference is mostly one of rhythm and emphasis:

• Tutto è chiaro slightly emphasizes everything
• È tutto chiaro is often a bit more conversational and natural in speech

Both are correct.

The comma separates the introductory phrase from the main statement:

• Per quanto riguarda la delibera, = Regarding the resolution,
• tutto è chiaro. = everything is clear.

In English, you often do the same:

• As for the resolution, everything is clear.

The comma helps mark that first part as the topic.

Yes. It can introduce different kinds of elements, for example:

• Per quanto riguarda Marco, non ci sono problemi.
  As for Marco, there are no problems.

• Per quanto riguarda il pagamento, ti faccio sapere domani.
  Regarding the payment, I’ll let you know tomorrow.

• Per quanto riguarda quello che hai detto, sono d'accordo.
  Regarding what you said, I agree.

So it is a flexible expression.

Yes. You could say:

• Riguardo alla delibera, tutto è chiaro.

This means almost the same thing.

A small grammar point: riguardo a + la delibera becomes riguardo alla delibera.

Both versions are correct, but per quanto riguarda can sound a little fuller or slightly more formal.

Because chiaro is an adjective describing the subject tutto:

• tutto è chiaro = everything is clear

Chiaramente is an adverb meaning clearly, and it would be used differently:

• Ha parlato chiaramente. = He spoke clearly.

So in this sentence you need the adjective chiaro, not the adverb chiaramente.

Yes, absolutely. It sounds natural, correct, and idiomatic.

It would fit especially well in contexts like:

• discussing a document
• reviewing an official decision
• speaking in a meeting
• writing a professional email

It is not overly stiff, but it does sound a bit more formal than very casual everyday speech.