fix flake8

pyWebLayout/abstract/inline.py

@@ -2,9 +2,12 @@ from __future__ import annotations
 from pyWebLayout.core.base import Queriable
 from pyWebLayout.style import Font
 from pyWebLayout.style.abstract_style import AbstractStyle
-from typing import Tuple, Union, List, Optional, Dict, Any
+from typing import Tuple, Union, List, Optional, Dict, Any, Callable
 import pyphen
 
+# Import LinkType for type hints (imported at module level to avoid F821 linting error)
+from pyWebLayout.abstract.functional import LinkType
+
 
 
 class Word:
@@ -279,7 +282,7 @@ class LinkedWord(Word):
     """
     
     def __init__(self, text: str, style: Union[Font, 'AbstractStyle'],
-                 location: str, link_type: 'LinkType' = None,
+                 location: str, link_type: Optional['LinkType'] = None,
                  callback: Optional[Callable] = None,
                  background=None, previous: Optional[Word] = None,
                  params: Optional[Dict[str, Any]] = None,
@@ -302,7 +305,6 @@ class LinkedWord(Word):
         super().__init__(text, style, background, previous)
         
         # Store link properties
-        from pyWebLayout.abstract.functional import LinkType
         self._location = location
         self._link_type = link_type or LinkType.EXTERNAL
         self._callback = callback
@@ -344,8 +346,6 @@ class LinkedWord(Word):
         Returns:
             The result of the link execution
         """
-        from pyWebLayout.abstract.functional import LinkType
-        
         # Add word text to context
         full_context = {**self._params, 'text': self._text}
         if context:

pyWebLayout/concrete/viewport.py

@@ -387,10 +387,10 @@ class Viewport(Box, Layoutable):
         }
 
 
-class ScrollablePageContent(Container):
+class ScrollablePageContent(Box):
     """
     A specialized container for page content that's designed to work with viewports.
-    This extends the regular Page functionality but allows for much larger content areas.
+    This extends the regular Box functionality but allows for much larger content areas.
     """
     
     def __init__(self, content_width: int = 800, initial_height: int = 1000, 

pyWebLayout/layout/document_layouter.py

@@ -9,6 +9,7 @@ from pyWebLayout.abstract import Paragraph, Word, Link
 from pyWebLayout.abstract.block import Image as AbstractImage
 from pyWebLayout.abstract.inline import LinkedWord
 from pyWebLayout.style.concrete_style import ConcreteStyleRegistry, RenderingContext, StyleResolver
+from pyWebLayout.style import Font, Alignment
 
 def paragraph_layouter(paragraph: Paragraph, page: Page, start_word: int = 0, pretext: Optional[Text] = None, alignment_override: Optional['Alignment'] = None) -> Tuple[bool, Optional[int], Optional[Text]]:
     """
@@ -40,7 +41,6 @@ def paragraph_layouter(paragraph: Paragraph, page: Page, start_word: int = 0, pr
     # paragraph.style is already a Font object (concrete), not AbstractStyle
     # We need to get word spacing constraints from the Font's abstract style if available
     # For now, use reasonable defaults based on font size
-    from pyWebLayout.style import Font, Alignment
     
     if isinstance(paragraph.style, Font):
         # paragraph.style is already a Font (concrete style)
@@ -228,8 +228,6 @@ def image_layouter(image: AbstractImage, page: Page, max_width: Optional[int] =
     Returns:
         bool: True if image was successfully laid out, False if page ran out of space
     """
-    from pyWebLayout.style import Alignment
-    
     # Use page available width if max_width not specified
     if max_width is None:
         max_width = page.available_width