diff --git a/mkdocs.yml b/mkdocs.yml
index 38ce866..9f9f6f5 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -7,8 +7,13 @@ theme:
   name: material
   logo: images/logo.png
   favicon: images/favicon.ico
+  font:
+    text: Arimo                 # Google font, replaces the default Arial
   features:
     - content.code.annotate
+    - content.code.copy         # Copy button on top right of code blocks
+    - navigation.expand         # Expand navigation menus by default
+#    - navigation.tabs           # Enable tabs on top https://squidfunk.github.io/mkdocs-material/setup/setting-up-navigation/#navigation-tabs
   palette:
     - media: "(prefers-color-scheme: light"
       scheme: default
@@ -23,19 +28,24 @@ theme:
 
 markdown_extensions:
   - abbr
-  - admonition
-  - pymdownx.details
+  - admonition                  # Info boxes
+  - pymdownx.details            # Info boxes
   - pymdownx.highlight
-  - pymdownx.superfences
+  - pymdownx.superfences        # Info boxes, tabs
   - pymdownx.emoji:
-      emoji_index: !!python/name:materialx.emoji.twemoji  # https://emojipedia.org/twitter/
-      emoji_generator: !!python/name:materialx.emoji.to_svg
-  - tables
+      emoji_index: !!python/name:material.extensions.emoji.twemoji  # https://emojipedia.org/twitter/
+      emoji_generator: !!python/name:material.extensions.emoji.to_svg
+  - tables                      # Create tables in Markdown by using a simple syntax
+  - mdx_truly_sane_lists        # 2-space indented nested lists
+  - attr_list                   # More functionality for images (align, lazy load, etc.)
+  - md_in_html                  # MD/HTML interop. Also helps with images (caption, center alignment)
 
 plugins:
-  - search
+  - search                      # Search box at the top
+  - glightbox                   # Image lightbox (for zooming). Requires `mkdocs-glightbox` package
 
-dev_addr: 127.0.0.1:7000
+dev_addr: 127.0.0.1:7007        # Default 8000 may compete with other frameworks
 
+site_url: https://github.com/joaonc/hd_active
 repo_url: https://github.com/joaonc/hd_active
 copyright: Copyright © 2024 Joao Coelho
diff --git a/pyproject.toml b/pyproject.toml
index f63dadc..f466ee1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,15 +6,14 @@ target-version = ['py311']
 skip-string-normalization = true
 extend-exclude='''
 (
-    app/ui/forms
+    src/hd_active/ui/forms
   | \.venv.*
   | \venv.*
 )
 '''
 
 [tool.isort]
-extend_skip = ['app/ui/forms']
-known_first_party = 'app'
+extend_skip = ['src/hd_active/ui/forms']
 profile = 'black'
 sections = 'FUTURE,STDLIB,THIRDPARTY,FIRSTPARTY,LOCALFOLDER'
 skip_glob = ['**/.venv*', '**/venv*', '/build']
diff --git a/setup.cfg b/setup.cfg
index 502c0a8..090f019 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,7 +1,7 @@
 # Configuration for tools that don't support `pyproject.toml`.
 
 [flake8]
-exclude = .git,.github,.venv*,venv*,__pycache__,assets,app/ui/forms,docs,site
+exclude = .git,.github,.venv*,venv*,__pycache__,assets,src/hd_active/ui/forms,docs,site
 max-line-length = 100
 
 # Errors being ignored:
diff --git a/app/__init__.py b/src/__init__.py
similarity index 100%
rename from app/__init__.py
rename to src/__init__.py
diff --git a/app/ui/__init__.py b/src/hd_active/__init__.py
similarity index 100%
rename from app/ui/__init__.py
rename to src/hd_active/__init__.py
diff --git a/app/hd_action_state.py b/src/hd_active/hd_action_state.py
similarity index 100%
rename from app/hd_action_state.py
rename to src/hd_active/hd_action_state.py
diff --git a/app/hd_active.py b/src/hd_active/hd_active.py
similarity index 97%
rename from app/hd_active.py
rename to src/hd_active/hd_active.py
index fced0b1..b85cf63 100644
--- a/app/hd_active.py
+++ b/src/hd_active/hd_active.py
@@ -7,7 +7,7 @@
 from pathlib import Path
 from typing import Deque, Iterable, Optional, Set, Union
 
-from app.hd_action_state import HdActionState
+from src.hd_active.hd_action_state import HdActionState
 
 FILE_NAME = '_hd_active.txt'
 logger = logging.getLogger(__name__)
@@ -148,7 +148,7 @@ def change_state(self) -> HdActionState:
     import argparse
     import sys
 
-    from app.hd_active_config import HdActiveConfig
+    from src.hd_active.hd_active_config import HdActiveConfig
 
     parser = argparse.ArgumentParser(description='Keep HDs active.')
     parser.add_argument(
diff --git a/app/hd_active_config.py b/src/hd_active/hd_active_config.py
similarity index 100%
rename from app/hd_active_config.py
rename to src/hd_active/hd_active_config.py
diff --git a/app/main.py b/src/hd_active/main.py
similarity index 84%
rename from app/main.py
rename to src/hd_active/main.py
index f340ca9..b3f5785 100644
--- a/app/main.py
+++ b/src/hd_active/main.py
@@ -2,8 +2,8 @@
 
 from PySide6 import QtGui, QtWidgets
 
-from app.ui.system_tray_icon import SystemTrayIcon
-from app.utils import get_asset
+from src.hd_active.ui.system_tray_icon import SystemTrayIcon
+from src.hd_active.utils import get_asset
 
 
 def main():
diff --git a/app/ui/forms/__init__.py b/src/hd_active/ui/__init__.py
similarity index 100%
rename from app/ui/forms/__init__.py
rename to src/hd_active/ui/__init__.py
diff --git a/src/hd_active/ui/forms/__init__.py b/src/hd_active/ui/forms/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/app/ui/forms/log_ui.py b/src/hd_active/ui/forms/log_ui.py
similarity index 92%
rename from app/ui/forms/log_ui.py
rename to src/hd_active/ui/forms/log_ui.py
index 6205dbe..43f6ae4 100644
--- a/app/ui/forms/log_ui.py
+++ b/src/hd_active/ui/forms/log_ui.py
@@ -18,9 +18,9 @@
     QPoint,
     QRect,
     QSize,
+    Qt,
     QTime,
     QUrl,
-    Qt,
 )
 from PySide6.QtGui import (
     QBrush,
@@ -40,7 +40,14 @@
     QRadialGradient,
     QTransform,
 )
-from PySide6.QtWidgets import QApplication, QDialog, QPushButton, QSizePolicy, QTextBrowser, QWidget
+from PySide6.QtWidgets import (
+    QApplication,
+    QDialog,
+    QPushButton,
+    QSizePolicy,
+    QTextBrowser,
+    QWidget,
+)
 
 
 class Ui_LogDialog(object):
diff --git a/app/ui/forms/settings_ui.py b/src/hd_active/ui/forms/settings_ui.py
similarity index 100%
rename from app/ui/forms/settings_ui.py
rename to src/hd_active/ui/forms/settings_ui.py
index 619031a..ee8fc77 100644
--- a/app/ui/forms/settings_ui.py
+++ b/src/hd_active/ui/forms/settings_ui.py
@@ -18,9 +18,9 @@
     QPoint,
     QRect,
     QSize,
+    Qt,
     QTime,
     QUrl,
-    Qt,
 )
 from PySide6.QtGui import (
     QBrush,
diff --git a/app/ui/log_dialog.py b/src/hd_active/ui/log_dialog.py
similarity index 86%
rename from app/ui/log_dialog.py
rename to src/hd_active/ui/log_dialog.py
index 7ae1de3..dc66f32 100644
--- a/app/ui/log_dialog.py
+++ b/src/hd_active/ui/log_dialog.py
@@ -1,7 +1,7 @@
 from PySide6 import QtGui, QtWidgets
 
-from app.hd_active import HdActive
-from app.ui.forms.log_ui import Ui_LogDialog
+from src.hd_active.hd_active import HdActive
+from src.hd_active.ui.forms.log_ui import Ui_LogDialog
 
 
 class LogDialog(QtWidgets.QDialog):
diff --git a/app/ui/settings_dialog.py b/src/hd_active/ui/settings_dialog.py
similarity index 89%
rename from app/ui/settings_dialog.py
rename to src/hd_active/ui/settings_dialog.py
index 4b2e174..567805d 100644
--- a/app/ui/settings_dialog.py
+++ b/src/hd_active/ui/settings_dialog.py
@@ -2,10 +2,10 @@
 
 from PySide6 import QtGui, QtWidgets
 
-from app.hd_active import HdActive
-from app.ui.forms.settings_ui import Ui_Dialog
-from app.ui.log_dialog import LogDialog
-from app.utils import get_asset
+from src.hd_active.hd_active import HdActive
+from src.hd_active.ui.forms.settings_ui import Ui_Dialog
+from src.hd_active.ui.log_dialog import LogDialog
+from src.hd_active.utils import get_asset
 
 
 class SettingsDialog(QtWidgets.QDialog):
diff --git a/app/ui/system_tray_icon.py b/src/hd_active/ui/system_tray_icon.py
similarity index 90%
rename from app/ui/system_tray_icon.py
rename to src/hd_active/ui/system_tray_icon.py
index c27b4da..a48fc7b 100644
--- a/app/ui/system_tray_icon.py
+++ b/src/hd_active/ui/system_tray_icon.py
@@ -2,10 +2,10 @@
 
 from PySide6 import QtWidgets
 
-from app.hd_active import HdActive
-from app.hd_active_config import HdActiveConfig
-from app.ui.settings_dialog import SettingsDialog
-from app.utils import is_truthy
+from src.hd_active.hd_active import HdActive
+from src.hd_active.hd_active_config import HdActiveConfig
+from src.hd_active.ui.settings_dialog import SettingsDialog
+from src.hd_active.utils import is_truthy
 
 HD_ACTION_DEBUG = is_truthy(os.getenv('HD_ACTION_DEBUG', 'True'))
 """
diff --git a/app/utils.py b/src/hd_active/utils.py
similarity index 91%
rename from app/utils.py
rename to src/hd_active/utils.py
index bf96a83..7965932 100644
--- a/app/utils.py
+++ b/src/hd_active/utils.py
@@ -1,7 +1,7 @@
 from pathlib import Path
 from typing import Any
 
-PROJECT_ROOT = Path(__file__).parents[1].resolve()
+PROJECT_ROOT = Path(__file__).parents[2].resolve()
 ASSETS_ROOT = PROJECT_ROOT / 'assets'
 
 
diff --git a/tasks.py b/tasks.py
index 375e735..7654734 100644
--- a/tasks.py
+++ b/tasks.py
@@ -3,7 +3,7 @@
 
 from invoke import Collection, Exit, task
 
-from app.utils import get_asset
+from src.hd_active.utils import get_asset
 
 os.environ.setdefault('INVOKE_RUN_ECHO', '1')  # Show commands by default
 
@@ -94,7 +94,7 @@ def ui_py(c, file=None):
                 f'File "{file}" not found. Available files: ", ".join(p.stem for p in UI_FILES)'
             )
 
-        py_file_path = PROJECT_ROOT / 'app/ui/forms' / f'{file_stem}_ui.py'
+        py_file_path = PROJECT_ROOT / 'src/hd_activehd_active/ui/forms' / f'{file_stem}_ui.py'
 
         c.run(f'pyside6-uic {ui_file_path} -o {py_file_path}')
 
diff --git a/tests/test_hd_active.py b/tests/test_hd_active.py
index d38594b..9670c30 100644
--- a/tests/test_hd_active.py
+++ b/tests/test_hd_active.py
@@ -6,8 +6,8 @@
 
 import pytest
 
-from app.hd_action_state import HdActionState
-from app.hd_active import HdActive
+from src.hd_active.hd_action_state import HdActionState
+from src.hd_active.hd_active import HdActive
 
 WAIT = 0.1
 WAIT_TEST = 2 * WAIT
@@ -22,7 +22,7 @@ def __init__(self, drive_paths=None, run=False, wait=WAIT):
         super().__init__(drive_paths, run, wait=wait)
 
 
-@patch('app.hd_active.HdActive._write_hd', return_value=1000)
+@patch('src.hd_active.hd_active.HdActive._write_hd', return_value=1000)
 class TestHdActive:
     def test_instantiate_not_started(self, mock_write_hd):
         hd_active = HdActiveTest(drive_paths=['z'], run=False)
diff --git a/tests/test_hd_active_config.py b/tests/test_hd_active_config.py
index 4b112ad..40e4052 100644
--- a/tests/test_hd_active_config.py
+++ b/tests/test_hd_active_config.py
@@ -3,7 +3,7 @@
 
 import pytest
 
-from app.hd_active_config import HdActiveConfig
+from src.hd_active.hd_active_config import HdActiveConfig
 
 
 @pytest.fixture
@@ -19,7 +19,7 @@ def config_file(request, tmp_path) -> Tuple[str, List[str]]:
     return str(file), request.param[1]
 
 
-@patch('app.hd_active_config.configparser.ConfigParser.read')
+@patch('src.hd_active.hd_active_config.configparser.ConfigParser.read')
 def test_defaults(read_mock):
     """
     Skip reading file (so defaults are not overwritten) and verify defaults.
diff --git a/tests/test_utils.py b/tests/test_utils.py
index 5b9a575..a558470 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -1,6 +1,14 @@
 import pytest
 
-from app.utils import get_asset, is_truthy
+from src.hd_active.utils import get_asset, is_truthy, PROJECT_ROOT, ASSETS_ROOT
+
+
+class TestGlobals:
+    def test_project_root(self):
+        assert PROJECT_ROOT.name == 'hd_active'
+
+    def test_assets_root(self):
+        assert ASSETS_ROOT.name == 'assets'
 
 
 class TestGetAsset: