diff --git a/USER_GUIDE.md b/USER_GUIDE.md
index 0f438fbf..8552cb22 100644
--- a/USER_GUIDE.md
+++ b/USER_GUIDE.md
@@ -308,13 +308,30 @@ If you use the HTTPS listener, use `https://<server-ip>:7200` (`curl -k` only fo
 
 ### 3.7 Sleep Screen
 
-You can customize the sleep screen by placing custom images in specific locations on the SD card:
+The **Sleep Screen** setting controls what is displayed when the device goes to sleep:
 
-- **Single Image:** Place a file named `sleep.bmp` in the root directory.
-- **Multiple Images:** Create a `sleep` directory in the root of the SD card and place any number of `.bmp` images inside. If images are found in this directory, they will take priority over the `sleep.bmp` file, and one will be randomly selected each time the device sleeps.
+| Mode | Behavior |
+|------|----------|
+| **Dark** (default) | The CrossPoint logo on a dark background. |
+| **Light** | The CrossPoint logo on a white background. |
+| **Custom** | A custom image from the SD card (see below). Falls back to **Dark** if no custom image is found. |
+| **Cover** | The cover of the currently open book. Falls back to **Dark** if no book is open. |
+| **Cover + Custom** | The cover of the currently open book. Falls back to **Custom** behavior if no book is open. |
+| **None** | A blank screen. |
 
-> [!NOTE]
-> You'll need to set the **Sleep Screen** setting to **Custom** in order to use these images.
+#### Cover settings
+
+When using **Cover** or **Cover + Custom**, two additional settings apply:
+
+- **Sleep Screen Cover Mode**: **Fit** (scale to fit, white borders) or **Crop** (scale and crop to fill the screen).
+- **Sleep Screen Cover Filter**: **None** (grayscale), **Contrast** (black & white), or **Inverted** (inverted black & white).
+
+#### Custom images
+
+To use custom sleep images, set the sleep screen mode to **Custom** or **Cover + Custom**, then place images on the SD card:
+
+- **Multiple Images (recommended):** Create a `.sleep` directory in the root of the SD card and place any number of `.bmp` images inside. One will be randomly selected each time the device sleeps. (A directory named `sleep` is also accepted as a fallback.)
+- **Single Image:** Place a file named `sleep.bmp` in the root directory. This is used as a fallback if no valid images are found in the `.sleep`/`sleep` directory.
 
 > [!TIP]
 > For best results:
diff --git a/src/activities/boot_sleep/SleepActivity.cpp b/src/activities/boot_sleep/SleepActivity.cpp
index cd6de5fc..35a0ee50 100644
--- a/src/activities/boot_sleep/SleepActivity.cpp
+++ b/src/activities/boot_sleep/SleepActivity.cpp
@@ -32,9 +32,20 @@ void SleepActivity::onEnter() {
 }
 
 void SleepActivity::renderCustomSleepScreen() const {
-  // Check if we have a /sleep directory
-  auto dir = Storage.open("/sleep");
+  // Check if we have a /.sleep (preferred) or /sleep directory
+  const char* sleepDir = nullptr;
+  auto dir = Storage.open("/.sleep");
   if (dir && dir.isDirectory()) {
+    sleepDir = "/.sleep";
+  } else {
+    if (dir) dir.close();
+    dir = Storage.open("/sleep");
+    if (dir && dir.isDirectory()) {
+      sleepDir = "/sleep";
+    }
+  }
+
+  if (sleepDir) {
     std::vector<std::string> files;
     char name[500];
     // collect all valid BMP files
@@ -74,10 +85,10 @@ void SleepActivity::renderCustomSleepScreen() const {
       }
       APP_STATE.lastSleepImage = randomFileIndex;
       APP_STATE.saveToFile();
-      const auto filename = "/sleep/" + files[randomFileIndex];
+      const auto filename = std::string(sleepDir) + "/" + files[randomFileIndex];
       FsFile file;
       if (Storage.openFileForRead("SLP", filename, file)) {
-        LOG_DBG("SLP", "Randomly loading: /sleep/%s", files[randomFileIndex].c_str());
+        LOG_DBG("SLP", "Randomly loading: %s/%s", sleepDir, files[randomFileIndex].c_str());
         delay(100);
         Bitmap bitmap(file, true);
         if (bitmap.parseHeaders() == BmpReaderError::Ok) {