Atâta timp cât atelierul de ceramică este deschis, lucrăm aici.

It introduces a subordinate clause and works like the English expression as long as or so long as.

A good way to learn it is as a single chunk:

atâta timp cât + clause

So here it sets the time frame or condition under which lucrăm aici is true.

You may see both.

For many teachers and in more careful standard usage, atât timp cât is often preferred, especially before timp. But atâta timp cât is also very common in real Romanian and will be understood without any problem.

For a learner, the most important point is that both forms are recognized and both mean the same thing here.

Not by itself.

Yes, cât can mean things like how much, how many, or how long in other contexts. But in this sentence it is part of the fixed expression atâta timp cât.

So instead of analyzing cât alone, it is better to treat the whole phrase as one connector.

Because the sentence begins with a subordinate clause:

Atâta timp cât atelierul de ceramică este deschis, ...

Romanian normally separates that opening clause from the main clause with a comma.

If you reverse the order, the comma is usually not needed:

Lucrăm aici atâta timp cât atelierul de ceramică este deschis.

Yes.

A very natural alternative is:

Lucrăm aici atâta timp cât atelierul de ceramică este deschis.

Both versions are correct. The difference is mainly one of emphasis:

• starting with Atâta timp cât... highlights the condition/time frame first
• starting with Lucrăm aici... puts the main statement first

You can also move aici for emphasis, for example Aici lucrăm..., but that makes the location more prominent.

Because atelierul is the definite form: the workshop / the studio.

Romanian usually puts the definite article at the end of the noun instead of using a separate word like English the.

So:

• atelier = workshop, studio
• atelierul = the workshop, the studio

This is one of the most important patterns in Romanian grammar.

Here de ceramică describes the type or field of the workshop: a ceramics / pottery workshop.

It does not necessarily mean that the workshop is physically made of ceramic.

After a noun, de + noun often shows:

• type
• purpose
• field
• material

So in context, atelier de ceramică means a workshop for ceramics or pottery.

Comparable patterns:

• magazin de haine = clothing shop
• sală de sport = gym
• atelier de pictură = painting studio

Because atelier is a neuter noun, and neuter nouns in Romanian behave like masculine in the singular and feminine in the plural.

So in the singular:

• atelierul este deschis

But in the plural:

• atelierele sunt deschise

That is why the adjective appears as deschis here.

In this sentence, it functions like an adjective meaning open.

The structure este deschis is very common in Romanian and corresponds to English is open.

So you can think of it as:

• este = is
• deschis = open

Formally, deschis comes from a past participle, but in sentences like this it is best learned as an adjective.

Because Romanian often leaves out subject pronouns when the verb ending already shows the subject.

lucrăm clearly means we work, because the ending -ăm marks 1st person plural.

So:

• lucrăm = we work
• noi lucrăm = we work, with extra emphasis on we

Romanian uses pronouns like noi only when needed for emphasis, contrast, or clarity.

Both are in the present indicative:

• este = present of a fi
• lucrăm = present of a lucra

In Romanian, the present tense can describe:

• something happening now
• a regular habit
• a general fact
• a standing arrangement

Here it most naturally sounds like a general or habitual statement rather than a one-time action.

They are both very common Romanian vowels, but they are different sounds.

• ă is like the weak vowel in English about
• â has no exact English equivalent; it is a central high vowel, produced with the tongue high and the lips relaxed

In this sentence:

• atâta contains both â and ă
• cât contains â
• ceramică ends in ă

These diacritics matter, so learners should pay attention to them early.

Sometimes, but the nuance changes.

• atâta timp cât = as long as / for as long as
• când = when
• în timp ce = while, often emphasizing simultaneity

In this sentence, atâta timp cât is the best choice because it emphasizes the whole period during which the workshop is open. Când would be more general, and în timp ce would feel more like a simple while clause.