diff --git a/backend/api/main.py b/backend/api/main.py
index 775db40..a5b71b5 100644
--- a/backend/api/main.py
+++ b/backend/api/main.py
@@ -16,9 +16,6 @@ from api.routers.test_mongo import router as test_mongo_router
 from api.routers.docit2mf_build import router as docit2mf_router
 from api.routers.google_auth import router as google_auth_router 
 
-
-
-
 @asynccontextmanager
 async def lifespan(app: FastAPI):
     yield
diff --git a/backend/api/models/docit2mf_models.py b/backend/api/models/docit2mf_models.py
index 8464a9a..cd33af4 100644
--- a/backend/api/models/docit2mf_models.py
+++ b/backend/api/models/docit2mf_models.py
@@ -1,12 +1,8 @@
-# models/docit2mf_models.py
-
 from pydantic import BaseModel, Field, field_validator, ValidationInfo
 from typing import List, Tuple, Union
 
-
 BlankCardInput = Union[int, Tuple[int, int], List[int]]
 
-
 class DoCIT2MFRequest(BaseModel):
     term: str
     core: tuple[float, float] = Field(..., description="Núcleo del conjunto difuso: [a, b]")
diff --git a/backend/api/models/user_models.py b/backend/api/models/user_models.py
index aa55399..3049a70 100644
--- a/backend/api/models/user_models.py
+++ b/backend/api/models/user_models.py
@@ -1,13 +1,8 @@
-# api/models/user_models.py
-
 from typing import List, Optional, Union
 from pydantic import BaseModel, EmailStr, Field
 from datetime import datetime
 
-
-# -----------------------------
 # MODELOS DE FUNCIONES DIFUSAS
-# -----------------------------
 
 class FuzzyTerm(BaseModel):
     term: str
@@ -23,9 +18,7 @@ class IT2FuzzyTerm(BaseModel):
     upper: FuzzyTerm
 
 
-# -----------------------------
 # HISTORIAL
-# -----------------------------
 
 class HistoryItem(BaseModel):
     id: Optional[str] = Field(default=None, alias="_id")
@@ -39,9 +32,7 @@ class HistoryCreateRequest(BaseModel):
     results: List[Union[FuzzyTerm, IT2FuzzyTerm]]
 
 
-# -----------------------------
 # USUARIOS
-# -----------------------------
 
 class UserCreate(BaseModel):
     username: str
diff --git a/backend/api/routers/docit2mf_build.py b/backend/api/routers/docit2mf_build.py
index f0761aa..ba604b3 100644
--- a/backend/api/routers/docit2mf_build.py
+++ b/backend/api/routers/docit2mf_build.py
@@ -1,5 +1,3 @@
-# api/routers/docit2mf_build.py
-
 import logging
 from fastapi import APIRouter, HTTPException, Request
 from slowapi import Limiter
diff --git a/backend/api/routers/docmf_simple_validation.py b/backend/api/routers/docmf_simple_validation.py
index 425384a..33c4d73 100644
--- a/backend/api/routers/docmf_simple_validation.py
+++ b/backend/api/routers/docmf_simple_validation.py
@@ -9,7 +9,6 @@ def validate_simple_docmf(request: SimpleValidationRequest):
     results = validate_simple_levels(request.levels)
     invalid = [r for r in results if not r["valid"]]
 
-    # Caso: un solo nivel
     if len(request.levels) == 1:
         if invalid:
             raise HTTPException(
@@ -24,7 +23,6 @@ def validate_simple_docmf(request: SimpleValidationRequest):
             "details": results[0]
         }
 
-    # Caso: varios niveles
     if invalid:
         return {
             "message": "Validación completada.",
diff --git a/backend/api/routers/google_auth.py b/backend/api/routers/google_auth.py
index 96734a2..2769868 100644
--- a/backend/api/routers/google_auth.py
+++ b/backend/api/routers/google_auth.py
@@ -14,10 +14,6 @@ GOOGLE_CLIENT_SECRET = os.getenv("GOOGLE_CLIENT_SECRET")
 REDIRECT_URI = os.getenv("GOOGLE_REDIRECT_URI")
 SECRET_KEY = os.getenv("SECRET_KEY")
 
-
-# -----------------------------
-# 1. LOGIN → REDIRECCIÓN A GOOGLE
-# -----------------------------
 @router.get("/login")
 async def google_login():
     google_auth_url = (
@@ -32,10 +28,6 @@ async def google_login():
 
     return RedirectResponse(google_auth_url)
 
-
-# -----------------------------
-# 2. CALLBACK → GOOGLE DEVUELVE EL CODE
-# -----------------------------
 @router.get("/callback")
 async def google_callback(request: Request):
 
diff --git a/backend/api/routers/history.py b/backend/api/routers/history.py
index 03c3db1..e3c65e6 100644
--- a/backend/api/routers/history.py
+++ b/backend/api/routers/history.py
@@ -10,10 +10,6 @@ from api.utils.security import get_current_user
 
 router = APIRouter(prefix="/history", tags=["history"])
 
-
-# -----------------------------
-# 1. Añadir un elemento al historial
-# -----------------------------
 @router.post("/add")
 async def add_history_item(
     data: HistoryCreateRequest,
@@ -39,10 +35,6 @@ async def add_history_item(
         "history_item_id": str(history_item_id),
     }
 
-
-# -----------------------------
-# 2. Eliminar un elemento del historial
-# -----------------------------
 @router.delete("/delete/{history_item_id}")
 async def delete_history_item(
     history_item_id: str,
@@ -64,9 +56,6 @@ async def delete_history_item(
     return {"message": "Elemento eliminado del historial"}
 
 
-# -----------------------------
-# 3. Obtener todos los historiales de todos los usuarios (ordenados)
-# -----------------------------
 @router.get("/all")
 async def get_all_histories():
     users = await users_collection.find().to_list(None)
@@ -90,7 +79,6 @@ async def get_all_histories():
                 }
             })
 
-    # Ordenar por fecha
     all_histories_sorted = sorted(
         all_histories,
         key=lambda h: h["history_item"]["created_at"]
@@ -98,10 +86,6 @@ async def get_all_histories():
 
     return {"count": len(all_histories_sorted), "histories": all_histories_sorted}
 
-
-# -----------------------------
-# 4. Obtener historiales del usuario autenticado (ordenados)
-# -----------------------------
 @router.get("/user")
 async def get_user_histories(current_user: dict = Depends(get_current_user)):
     user_id = current_user["_id"]
@@ -116,7 +100,6 @@ async def get_user_histories(current_user: dict = Depends(get_current_user)):
 
     history = user.get("history", [])
 
-    # Ordenar por fecha
     history_sorted = sorted(history, key=lambda h: h["created_at"])
 
     formatted_history = []
diff --git a/backend/api/services/docit2mf_build_service.py b/backend/api/services/docit2mf_build_service.py
index 77ca7cb..c5e7aee 100644
--- a/backend/api/services/docit2mf_build_service.py
+++ b/backend/api/services/docit2mf_build_service.py
@@ -1,5 +1,3 @@
-# services/docit2mf_build_service.py
-
 from typing import List, Union
 from api.models.docit2mf_models import DoCIT2MFRequest
 from api.models.docmf_models import DoCMFRequest
@@ -32,13 +30,11 @@ def _enforce_upper_ge_lower(lower, upper):
     Garantiza que la UMF (upper) nunca quede por debajo de la LMF (lower).
     Ajusta los valores de pertenencia si es necesario.
     """
-    # left nodes
     for i in range(len(lower["left_nodes"])):
         ly = lower["left_nodes"][i][1]
         uy = upper["left_nodes"][i][1]
         upper["left_nodes"][i][1] = max(uy, ly)
 
-    # right nodes
     for i in range(len(lower["right_nodes"])):
         ly = lower["right_nodes"][i][1]
         uy = upper["right_nodes"][i][1]
@@ -58,9 +54,6 @@ def build_it2mf_from_level(level: DoCIT2MFRequest):
     }
     """
 
-    # -------------------------
-    # LMF (mínimos)
-    # -------------------------
     left_min = _extract_bounds(level.left_blank_cards, "min")
     right_min = _extract_bounds(level.right_blank_cards, "min")
 
@@ -74,18 +67,13 @@ def build_it2mf_from_level(level: DoCIT2MFRequest):
         right_blank_cards=right_min,
     )
 
-    # Convertir a dict para poder manipular como diccionario
     lower = build_doc_mf_level(lower_level)
     if hasattr(lower, "model_dump"):
         lower = lower.model_dump()
 
-    # Asegurar que los nodos son listas mutables y ordenar
     lower["left_nodes"] = _sort_nodes(lower["left_nodes"])
     lower["right_nodes"] = _sort_nodes(lower["right_nodes"])
 
-    # -------------------------
-    # UMF (máximos)
-    # -------------------------
     left_max = _extract_bounds(level.left_blank_cards, "max")
     right_max = _extract_bounds(level.right_blank_cards, "max")
 
@@ -99,18 +87,13 @@ def build_it2mf_from_level(level: DoCIT2MFRequest):
         right_blank_cards=right_max,
     )
 
-    # Convertir a dict para poder manipular como diccionario
     upper = build_doc_mf_level(upper_level)
     if hasattr(upper, "model_dump"):
         upper = upper.model_dump()
 
-    # Asegurar que los nodos son listas mutables y ordenar
     upper["left_nodes"] = _sort_nodes(upper["left_nodes"])
     upper["right_nodes"] = _sort_nodes(upper["right_nodes"])
 
-    # -------------------------
-    # FIX: evitar inversión vertical (UMF < LMF)
-    # -------------------------
     upper = _enforce_upper_ge_lower(lower, upper)
 
     return {
diff --git a/backend/api/services/docmf_build_service.py b/backend/api/services/docmf_build_service.py
index 0d4c406..2f11197 100644
--- a/backend/api/services/docmf_build_service.py
+++ b/backend/api/services/docmf_build_service.py
@@ -1,5 +1,3 @@
-# services/docmf_build_service.py
-
 from api.models.docmf_models import DoCMFRequest
 from api.models.user_models import FuzzyTerm
 
@@ -8,7 +6,6 @@ def build_single_docmf(request: DoCMFRequest):
     a, b = request.core
     c, d = request.support
 
-    # LEFT
     TL = sum(e + 1 for e in request.left_blank_cards)
     YL = 1 / TL
     left_nodes = []
@@ -21,7 +18,6 @@ def build_single_docmf(request: DoCMFRequest):
             acc += request.left_blank_cards[i - 1] + 1
             left_nodes.append((x, round(acc * YL, 4)))
 
-    # RIGHT
     TR = sum(e + 1 for e in request.right_blank_cards)
     YR = 1 / TR
     right_nodes = []
diff --git a/backend/api/services/docmf_simple_validation_service.py b/backend/api/services/docmf_simple_validation_service.py
index 253f910..4d62818 100644
--- a/backend/api/services/docmf_simple_validation_service.py
+++ b/backend/api/services/docmf_simple_validation_service.py
@@ -4,7 +4,6 @@ def validate_simple_level(level: dict):
     a, b = level["core"]
     c, d = level["support"]
 
-    # Validación: núcleo dentro del soporte
     if not (c <= a < b <= d):
         errors.append("El núcleo debe estar completamente dentro del soporte.")
 
diff --git a/backend/api/services/docmf_validation_service.py b/backend/api/services/docmf_validation_service.py
index 97ccfa5..e49b90c 100644
--- a/backend/api/services/docmf_validation_service.py
+++ b/backend/api/services/docmf_validation_service.py
@@ -4,11 +4,9 @@ def validate_single_level(level: dict):
     a, b = level["core"]
     c, d = level["support"]
 
-    # Core dentro del soporte
     if not (c <= a < b <= d):
         errors.append("El núcleo debe estar completamente dentro del soporte.")
 
-    # Nodos cubren correctamente el soporte
     left = level["left_nodes"]
     right = level["right_nodes"]