Idea Modding
Idea modding can be done be editing the "00_ideas.txt" file and is fairly straight-forward. Any country modifiers can be used in the ideas.
The idea tiers are the default way to unlock/lock ideas located in "00_tech_tiers.txt", but any country triggers can work for this. They are grouped by the four basic stats, any deviation from this categorization system is not recommended.
idea_martial_ethos = {
trigger = {
military_tech >= idea_tier_1
}
land_morale_modifier = 0.10
group = military_ideas
soundeffect = "event:/SFX/UI/Actions/sfx_ui_action_select_idea_military"
}