export type Gender = 'male' | 'female';
export type Goal = 'lose' | 'maintain' | 'gain';
export type ActivityLevel = 'sedentary' | 'light' | 'moderate' | 'active' | 'very_active';

export interface UserProfile {
  height: number; // cm
  weight: number; // kg
  age: number;
  gender: Gender;
  activityLevel: ActivityLevel;
  goal: Goal;
  
  // Calculated
  bmi: number;
  tdee: number;
  
  // Targets
  targetCalories: number;
  targetProtein: number;
  targetFat: number;
  targetCarbs: number;
  targetWater: number; // ml
}

export interface Meal {
  id: string;
  name: string;
  time: string;
  calories: number;
  protein: number;
  fat: number;
  carbs: number;
}

export interface DailyLog {
  date: string; // YYYY-MM-DD
  meals: Meal[];
  waterIntake: number; // ml
  weight?: number; // kg (Optional daily weight record)
}