The 1987 Philippine Constitution establishes the Philippines as a democratic and republican state, emphasizing sovereignty residing in the people and the supremacy of civilian authority over the military. It outlines fundamental principles of national policy, the rights of citizens, and the responsibilities of the government in promoting social justice, protecting human rights, and ensuring a balanced ecological environment. The document further details the structure of the legislative branch, citizenship, and the right to suffrage, aiming to uphold democracy and the welfare of Filipino citizens.