(a)   Salary. The salary of the mayor shall be established by ordinance or resolution, provided that the legislation must be adopted not less than 30 days prior to the deadline for the filing of nominating petitions by candidates for the office of mayor for the next term, and subject to further provisions of this charter.
   (b)   Salary Recommendation. Council shall accept, reject, or modify the civil service commission's recommendations made under Article Six within 90 days of receiving them. Without any action by council within the 90-day period, the recommendations of the civil service commission with respect to the mayor's salary shall become effective as if adopted by ordinance or resolution under Section 2.8, but consistent with Section 3.5(c).
   (c)   Timing of Salary Change. No change in the salary for the mayor shall take effect during the current term of the mayor.