diff --git a/client/src/types.ts b/client/src/types.ts
index 0209ee3..fe40c66 100644
--- a/client/src/types.ts
+++ b/client/src/types.ts
@@ -157,3 +157,24 @@ export interface Condition {
   rounds_remaining: number | null;
   expires_at: string | null;
 }
+
+export interface CombatEnemy {
+  id: string;
+  name: string;
+  hp_current?: number;  // present only for DM; stripped before broadcast to players
+  hp_max?: number;      // present only for DM; stripped before broadcast to players
+}
+
+export interface CombatState {
+  id: string;
+  label?: string;
+  mode: "team";
+  round: number;
+  phase: "rolling" | "active";
+  current_side: "party" | "enemies";
+  party_roll: number | null;
+  enemy_roll: number | null;
+  party_rolls: Record<number, number>;  // characterId → roll value
+  character_ids: number[];
+  enemies: CombatEnemy[];
+}