diff --git a/app.py b/app.py
index 96f2b2e..9978bf7 100644
--- a/app.py
+++ b/app.py
@@ -17,6 +17,10 @@ import json
 import platform
 import sys
 
+try:
+    from tkmacosx import Button
+except ImportError:
+    Button = tk.Button
 # ===========================
 # CONFIGURACIÓN
 # ===========================
@@ -530,35 +534,35 @@ class App:
         self.controls_frame = tk.Frame(window, bg=BG_COLOR)
         self.controls_frame.pack(fill="x", padx=10, pady=10)
         
-        self.btn_draw = tk.Button(self.controls_frame, text="Dibujar Línea", command=self.start_drawing, bg=ACCENT_COLOR, fg="white", font=("Helvetica", 10, "bold"))
+        self.btn_draw = Button(self.controls_frame, text="Dibujar Línea", command=self.start_drawing, bg=ACCENT_COLOR, fg="white", font=("Helvetica", 10, "bold"))
         self.btn_draw.pack(side="left", padx=5)
         
-        self.btn_reset_line = tk.Button(self.controls_frame, text="Borrar Línea", command=self.reset_line, bg="#e06c75", fg="white", font=("Helvetica", 10))
+        self.btn_reset_line = Button(self.controls_frame, text="Borrar Línea", command=self.reset_line, bg="#e06c75", fg="white", font=("Helvetica", 10))
         self.btn_reset_line.pack(side="left", padx=5)
 
-        self.btn_settings = tk.Button(self.controls_frame, text="Ajustes Cámara", command=self.open_settings_window, bg="#e5c07b", fg="black", font=("Helvetica", 10))
+        self.btn_settings = Button(self.controls_frame, text="Ajustes Cámara", command=self.open_settings_window, bg="#e5c07b", fg="black", font=("Helvetica", 10))
         self.btn_settings.pack(side="left", padx=5)
 
-        self.btn_720p = tk.Button(self.controls_frame, text="720p", command=lambda: self.change_resolution(1280, 720), bg="#61afef", fg="white", font=("Helvetica", 10))
+        self.btn_720p = Button(self.controls_frame, text="720p", command=lambda: self.change_resolution(1280, 720), bg="#61afef", fg="white", font=("Helvetica", 10))
         self.btn_720p.pack(side="left", padx=5)
 
-        self.btn_1080p = tk.Button(self.controls_frame, text="1080p", command=lambda: self.change_resolution(1920, 1080), bg="#61afef", fg="white", font=("Helvetica", 10))
+        self.btn_1080p = Button(self.controls_frame, text="1080p", command=lambda: self.change_resolution(1920, 1080), bg="#61afef", fg="white", font=("Helvetica", 10))
         self.btn_1080p.pack(side="left", padx=5)
 
-        self.btn_correct = tk.Button(self.controls_frame, text="Corregir Contador", command=self.open_correction_dialog, bg="#d19a66", fg="white", font=("Helvetica", 10, "bold"))
+        self.btn_correct = Button(self.controls_frame, text="Corregir Contador", command=self.open_correction_dialog, bg="#d19a66", fg="white", font=("Helvetica", 10, "bold"))
         self.btn_correct.pack(side="left", padx=5)
 
-        self.btn_calib = tk.Button(self.controls_frame, text="Calibrar 3D", command=self.toggle_calibration, bg="#98c379", fg="white", font=("Helvetica", 10, "bold"))
+        self.btn_calib = Button(self.controls_frame, text="Calibrar 3D", command=self.toggle_calibration, bg="#98c379", fg="white", font=("Helvetica", 10, "bold"))
         self.btn_calib.pack(side="left", padx=5)
 
         # Estado
         
         self.calibration = PerspectiveCalibration() # Nueva clase de calibración
 
-        self.btn_roi = tk.Button(self.controls_frame, text="Reforzar Zona", command=self.start_roi_selection, bg="#c678dd", fg="white", font=("Helvetica", 10))
+        self.btn_roi = Button(self.controls_frame, text="Reforzar Zona", command=self.start_roi_selection, bg="#c678dd", fg="white", font=("Helvetica", 10))
         self.btn_roi.pack(side="left", padx=5)
 
-        self.btn_graph = tk.Button(self.controls_frame, text="Generar Gráfico", command=generate_graph, bg="#98c379", fg="black", font=("Helvetica", 10))
+        self.btn_graph = Button(self.controls_frame, text="Generar Gráfico", command=generate_graph, bg="#98c379", fg="black", font=("Helvetica", 10))
         self.btn_graph.pack(side="left", padx=5)
 
         self.log_text = scrolledtext.ScrolledText(window, height=8, bg="#21252b", fg="white", font=("Courier", 9) if platform.system() != "Windows" else ("Consolas", 9))
@@ -880,22 +884,22 @@ class App:
         tk.Label(self.calib_window, text="Mover Malla", bg=BG_COLOR, fg="white").pack(pady=5)
         frm_move = tk.Frame(self.calib_window, bg=BG_COLOR)
         frm_move.pack()
-        tk.Button(frm_move, text="↑", command=lambda: self.calibration.move_grid(0, -10)).grid(row=0, column=1)
-        tk.Button(frm_move, text="←", command=lambda: self.calibration.move_grid(-10, 0)).grid(row=1, column=0)
-        tk.Button(frm_move, text="↓", command=lambda: self.calibration.move_grid(0, 10)).grid(row=1, column=1)
-        tk.Button(frm_move, text="→", command=lambda: self.calibration.move_grid(10, 0)).grid(row=1, column=2)
+        Button(frm_move, text="↑", command=lambda: self.calibration.move_grid(0, -10)).grid(row=0, column=1)
+        Button(frm_move, text="←", command=lambda: self.calibration.move_grid(-10, 0)).grid(row=1, column=0)
+        Button(frm_move, text="↓", command=lambda: self.calibration.move_grid(0, 10)).grid(row=1, column=1)
+        Button(frm_move, text="→", command=lambda: self.calibration.move_grid(10, 0)).grid(row=1, column=2)
 
         tk.Label(self.calib_window, text="Rotar", bg=BG_COLOR, fg="white").pack(pady=5)
         frm_rot = tk.Frame(self.calib_window, bg=BG_COLOR)
         frm_rot.pack()
-        tk.Button(frm_rot, text="↺ -5°", command=lambda: self.calibration.rotate_grid(-5)).pack(side="left", padx=5)
-        tk.Button(frm_rot, text="↻ +5°", command=lambda: self.calibration.rotate_grid(5)).pack(side="left", padx=5)
+        Button(frm_rot, text="↺ -5°", command=lambda: self.calibration.rotate_grid(-5)).pack(side="left", padx=5)
+        Button(frm_rot, text="↻ +5°", command=lambda: self.calibration.rotate_grid(5)).pack(side="left", padx=5)
 
         tk.Label(self.calib_window, text="Escalar", bg=BG_COLOR, fg="white").pack(pady=5)
         frm_scale = tk.Frame(self.calib_window, bg=BG_COLOR)
         frm_scale.pack()
-        tk.Button(frm_scale, text="-", command=lambda: self.calibration.scale_grid(0.9)).pack(side="left", padx=5)
-        tk.Button(frm_scale, text="+", command=lambda: self.calibration.scale_grid(1.1)).pack(side="left", padx=5)
+        Button(frm_scale, text="-", command=lambda: self.calibration.scale_grid(0.9)).pack(side="left", padx=5)
+        Button(frm_scale, text="+", command=lambda: self.calibration.scale_grid(1.1)).pack(side="left", padx=5)
 
         tk.Label(self.calib_window, text="Altura Referencia (m)", bg=BG_COLOR, fg="white").pack(pady=10)
         # Aquí iría el control de altura, por ahora solo visual
@@ -930,8 +934,8 @@ class App:
                 log_to_excel("Reset", "Manual", 0, self.log_text)
                 win.destroy()
 
-        tk.Button(win, text="Aplicar", command=apply, bg=ACCENT_COLOR, fg="white").pack(pady=5)
-        tk.Button(win, text="Resetear Contadores a 0", command=reset_all, bg="#e06c75", fg="white").pack(pady=20)
+        Button(win, text="Aplicar", command=apply, bg=ACCENT_COLOR, fg="white").pack(pady=5)
+        Button(win, text="Resetear Contadores a 0", command=reset_all, bg="#e06c75", fg="white").pack(pady=20)
 
     def get_img_coords(self, event):
         if self.current_frame_size is None: return 0, 0
diff --git a/requirements.txt b/requirements.txt
index a5fd923..853e8cd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,3 +4,5 @@ pillow
 openpyxl
 pandas
 matplotlib
+numpy<2
+tkmacosx