diff --git a/.gitignore b/.gitignore
index 84b6579..4624582 100644
--- a/.gitignore
+++ b/.gitignore
@@ -25,3 +25,4 @@ Thumbs.db
 
 # Local scratch
 /tmp/
+/cli/tmp/
diff --git a/README.md b/README.md
index ffb5616..fb14fcf 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,10 @@ Give AI agents eyes into ArcGIS Pro.
 
 ```bash
 pip install arcgispro-cli
+
+# Optional: install TUI dependencies
+pip install arcgispro-cli[tui]
+
 arcgis install
 ```
 
diff --git a/cli/arcgispro_cli/cli.py b/cli/arcgispro_cli/cli.py
index 02ddd44..c2af8e0 100644
--- a/cli/arcgispro_cli/cli.py
+++ b/cli/arcgispro_cli/cli.py
@@ -32,7 +32,7 @@
 
 from . import __version__
 from .commands import clean, open_project, install, query, launch, notebooks, tui, diagram
-from .tui.banner import _colorize_logo
+from .logo import colorize_logo
 
 # Ensure Unicode output on Windows
 if sys.stdout.encoding != "utf-8":
@@ -62,7 +62,7 @@ def main(ctx):
     """
     ctx.ensure_object(dict)
     if ctx.invoked_subcommand is None:
-        console.print(_colorize_logo())
+        console.print(colorize_logo())
         console.print()
         console.print(ctx.get_help())
 
diff --git a/cli/arcgispro_cli/commands/tui.py b/cli/arcgispro_cli/commands/tui.py
index 4d5aed3..dc96995 100644
--- a/cli/arcgispro_cli/commands/tui.py
+++ b/cli/arcgispro_cli/commands/tui.py
@@ -6,6 +6,14 @@
 @click.option("--no-banner", is_flag=True, help="Disable the ASCII banner")
 def tui_cmd(repo: str, no_banner: bool) -> None:
     """Start the ArcGIS Pro TUI."""
-    from arcgispro_cli.tui.app import ArcGISProCLIApp
+    try:
+        from arcgispro_cli.tui.app import ArcGISProCLIApp
+    except ModuleNotFoundError as e:
+        # The most common case is missing optional TUI deps (textual).
+        if (e.name or "").startswith("textual"):
+            raise click.ClickException(
+                "TUI dependencies are not installed. Install with: pip install arcgispro-cli[tui]"
+            )
+        raise
 
     ArcGISProCLIApp(repo_path=repo, show_banner=(not no_banner)).run()
diff --git a/cli/arcgispro_cli/logo.py b/cli/arcgispro_cli/logo.py
new file mode 100644
index 0000000..7142a01
--- /dev/null
+++ b/cli/arcgispro_cli/logo.py
@@ -0,0 +1,50 @@
+from __future__ import annotations
+
+from rich.text import Text
+
+LOGO_LINES = [
+    " █████╗ ██████╗  ██████╗  ██████╗ ██╗███████╗",
+    "██╔══██╗██╔══██╗██╔════╝ ██╔════╝ ██║██╔════╝",
+    "███████║██████╔╝██║      ██║  ███╗██║███████╗",
+    "██╔══██║██╔══██╗██║      ██║   ██║██║╚════██║",
+    "██║  ██║██║  ██║╚██████╗ ╚██████╔╝██║███████║",
+    "╚═╝  ╚═╝╚═╝  ╚═╝ ╚═════╝  ╚═════╝ ╚═╝╚══════╝",
+]
+
+BLUES = [
+    "#9dd8ff",
+    "#87cefa",
+    "#6fbff6",
+    "#55aef0",
+    "#3f9be8",
+    "#2f88e0",
+]
+
+GRAYS = [
+    "color(250)",
+    "color(248)",
+    "color(245)",
+    "color(243)",
+    "color(240)",
+    "color(238)",
+]
+
+SHADOW_CHARS = set("╔╗╚╝═║")
+
+
+def colorize_logo() -> Text:
+    """Render ARCGIS logo with blue gradient fills and gray shadow strokes."""
+    text = Text()
+    for row_index, line in enumerate(LOGO_LINES):
+        block_color = BLUES[min(row_index, len(BLUES) - 1)]
+        shadow_color = GRAYS[min(row_index, len(GRAYS) - 1)]
+        for ch in line:
+            if ch in SHADOW_CHARS:
+                text.append(ch, style=shadow_color)
+            elif ch == " ":
+                text.append(ch)
+            else:
+                text.append(ch, style=block_color)
+        if row_index < len(LOGO_LINES) - 1:
+            text.append("\n")
+    return text
diff --git a/cli/arcgispro_cli/tui/banner.py b/cli/arcgispro_cli/tui/banner.py
index 77f5cb1..4dd2a79 100644
--- a/cli/arcgispro_cli/tui/banner.py
+++ b/cli/arcgispro_cli/tui/banner.py
@@ -1,56 +1,9 @@
 from __future__ import annotations
 
-from rich.text import Text
 from textual.widget import Widget
 from textual.widgets import Static
 
-LOGO_LINES = [
-    " █████╗ ██████╗  ██████╗  ██████╗ ██╗███████╗",
-    "██╔══██╗██╔══██╗██╔════╝ ██╔════╝ ██║██╔════╝",
-    "███████║██████╔╝██║      ██║  ███╗██║███████╗",
-    "██╔══██║██╔══██╗██║      ██║   ██║██║╚════██║",
-    "██║  ██║██║  ██║╚██████╗ ╚██████╔╝██║███████║",
-    "╚═╝  ╚═╝╚═╝  ╚═╝ ╚═════╝  ╚═════╝ ╚═╝╚══════╝",
-]
-
-BLUES = [
-    "#9dd8ff",
-    "#87cefa",
-    "#6fbff6",
-    "#55aef0",
-    "#3f9be8",
-    "#2f88e0",
-]
-
-GRAYS = [
-    "color(250)",
-    "color(248)",
-    "color(245)",
-    "color(243)",
-    "color(240)",
-    "color(238)",
-]
-
-SHADOW_CHARS = set("╔╗╚╝═║")
-
-
-def _colorize_logo() -> Text:
-    """Render ARCGIS logo with blue gradient fills and gray shadow strokes."""
-    text = Text()
-    for row_index, line in enumerate(LOGO_LINES):
-        block_color = BLUES[min(row_index, len(BLUES) - 1)]
-        shadow_color = GRAYS[min(row_index, len(GRAYS) - 1)]
-        for ch in line:
-            if ch in SHADOW_CHARS:
-                text.append(ch, style=shadow_color)
-            elif ch == " ":
-                text.append(ch)
-            else:
-                text.append(ch, style=block_color)
-        if row_index < len(LOGO_LINES) - 1:
-            text.append("\n")
-    return text
-
+from arcgispro_cli.logo import colorize_logo
 
 class Banner(Widget):
     """Top-of-screen banner with oh-my-logo rendering."""
@@ -80,4 +33,4 @@ def _refresh(self) -> None:
             self._body.update("")
             return
 
-        self._body.update(_colorize_logo())
+        self._body.update(colorize_logo())
diff --git a/cli/pyproject.toml b/cli/pyproject.toml
index 37834b9..c625e3a 100644
--- a/cli/pyproject.toml
+++ b/cli/pyproject.toml
@@ -27,10 +27,15 @@ dependencies = [
     "click>=8.0",
     "pillow>=10.0.0",
     "rich>=13.0",
-    "textual>=0.56",
 ]
 
 [project.optional-dependencies]
+# The Textual UI is optional so `pip install arcgispro-cli` stays lightweight
+# and avoids pulling in heavy TUI deps unless you want them.
+tui = [
+    "textual>=0.56",
+]
+
 dev = [
     "pytest>=7.0",
     "pytest-cov>=4.0",
diff --git a/cli/tests/test_cli.py b/cli/tests/test_cli.py
index 1ec25ac..bea01c9 100644
--- a/cli/tests/test_cli.py
+++ b/cli/tests/test_cli.py
@@ -31,6 +31,16 @@ def test_install_help():
     assert "ProExporter" in result.output
 
 
+def test_tui_without_optional_deps_gives_helpful_error():
+    runner = CliRunner()
+    result = runner.invoke(main, ["tui"])
+
+    # Without the optional Textual dependency, this should fail fast with guidance.
+    # (In dev envs where textual is installed, this test may need updating.)
+    assert result.exit_code != 0
+    assert "arcgispro-cli[tui]" in result.output
+
+
 def test_layers_no_folder():
     """Test layers command when no .arcgispro folder exists."""
     runner = CliRunner()