If statement using vhdl-counter

It'z DFF counter counts from 0 to 10, and from 10 to 0. There z switch to switch between Ascending/Descending. On of the guys in this website helped me to solve the if statement problem but it looks itz not allowed to use it outside the process , si if any one could help and have any idea to use when istead . would be perfect. using planahead to design this counter

library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
entity counter_10 is
port(
     clk, reset, pause: in std_logic;
     q: out std_logic_vector(3 downto 0)
);
end counter_10;

architecture arc_counter of counter_10 is
constant M: integer:=10;
signal r_reg: unsigned(3 downto 0);
signal r_next: unsigned(3 downto 0);
begin
process(clk, reset, pause)
begin
if(reset='1') then r_reg <=(others=>'0');
     elsif pause = '1' then
     r_reg<=r_reg;
     elsif (clk'event and clk='1') then
           r_reg<=r_next;
end if;
end process;
------------------------------------------------------------------------

if (inc_dec='1') then
   if (r_reg=(M-1)) then
        r_next <= (others=>'0');
   else 
        r_reg+1;
   end if; 
elsif (inc_dec='0') then
   if (r_reg=(M-10)) then
        r_next <=  to_unsigned(9, 4);
   else
        r_reg-1;
   end if;
end if;
------------------------------------------------------------------------

--Output logic
q<= std_logic_vector(r_reg);
end arc_counter;

The error still the same :

 [HDLCompiler 806] Syntax error near "if". 
 [HDLCompiler 806] Syntax error near "then". 
 [HDLCompiler 806] Syntax error near "else". 
 [HDLCompiler 806] Syntax error near "then". 

 [HDLCompiler 806] Syntax error near "then". 
 [HDLCompiler 806] Syntax error near "else".