diff --git a/esphome/esp-bedside-panel.yaml b/esphome/esp-bedside-panel.yaml
index 1e3453e..0c77a69 100644
--- a/esphome/esp-bedside-panel.yaml
+++ b/esphome/esp-bedside-panel.yaml
@@ -6,6 +6,7 @@
 # https://home.fox.co.nz/gitea/zorruno/zorruno-homeassistant/src/branch/master/esphome/esp-bedside-panel.yaml
 #:########################################################################################:#
 # VERSIONS:
+# V1.34 2026-07-19 Added three ambient-light ranges and periodic backlight rechecking
 # V1.33 2026-07-19 Raised the default night lux threshold after TEMT6000 testing
 # V1.32 2026-07-19 Added persistent ambient-light thresholds, brightness levels and idle delays
 # V1.31 2026-07-19 Added TEMT6000 ambient-light voltage and illuminance sensors
@@ -118,10 +119,12 @@
 # - Sleep: 2 hrs starts a local 120-minute countdown and turns the heat pump off.
 # - Pressing the active Sleep button again cancels the countdown.
 # - TEMT6000 voltage and approximate lux are exposed for calibration.
-# - Touch immediately restores a day/night brightness selected from ambient lux.
+# - Ambient light is divided into Dark, Normal and Bright ranges.
+# - Touch immediately restores the active brightness for the current range.
 # - The current page dims after a configurable idle delay.
 # - A second configurable delay changes to the large Clock page.
-# - Calibration, threshold, brightness and delay values persist across reboot.
+# - Clock/idle brightness is rechecked periodically as ambient light changes.
+# - Calibration, thresholds, brightness and delay values persist across reboot.
 #:########################################################################################:#
 # OFFLINE NOTES:
 # - LVGL, the clock, touch and backlight operate locally.
@@ -140,12 +143,12 @@ substitutions:
   # Device Naming
   device_name: "esp-bedside-panel"
   friendly_name: "ESP Bedside Panel"
-  description_comment: "Guition JC1060P470C_I_W_Y ESP32-P4 bedside control panel. Adaptive touch/idle brightness with a calibrated 20 lx default night threshold. (Layout V1.1)"
+  description_comment: "Guition JC1060P470C_I_W_Y ESP32-P4 bedside control panel. Three-range adaptive touch and clock brightness with periodic ambient rechecking. (Layout V1.1)"
   device_area: "Bedroom"
 
   # Project Naming
   project_name: "Guition.JC1060P470C_I_W_Y"
-  project_version: "v1.33"
+  project_version: "v1.34"
 
   # Passwords & Secrets
   api_key: !secret esp-api_key
@@ -176,15 +179,31 @@ substitutions:
   # These initialise the persistent ESPHome number entities on first install or
   # after flash preferences are erased. Once adjusted through Home Assistant,
   # restored values take precedence after reboot.
+  #
+  # Observed TEMT6000 values before installation:
+  #   Very dark: approximately 6-12 lx
+  #   Bright light: approximately 642-643 lx
   ambient_lux_multiplier_default: "200"
-  display_night_lux_threshold_default: "20"
-  display_day_active_brightness_default: "80"
-  display_night_active_brightness_default: "25"
-  display_day_dim_brightness_default: "15"
-  display_night_dim_brightness_default: "4"
+
+  display_dark_lux_threshold_default: "20"
+  display_bright_lux_threshold_default: "250"
+
+  display_dark_touch_brightness_default: "25"
+  display_normal_touch_brightness_default: "80"
+  display_bright_touch_brightness_default: "95"
+
+  display_dark_clock_brightness_default: "4"
+  display_normal_clock_brightness_default: "15"
+  display_bright_clock_brightness_default: "60"
+
   display_dim_delay_default: "30"
   display_clock_delay_default: "60"
 
+  # The ADC samples every second and publishes a filtered reading about every
+  # three seconds. This controls how often the current screen brightness is
+  # re-evaluated against the latest lux value.
+  adaptive_backlight_recheck_interval: "10s"
+
   # Security Camera Settings
   # Change this only if homeassistant.local is not reachable from the panel.
   home_assistant_internal_url: "http://homeassistant.local:8123"
@@ -735,13 +754,13 @@ number:
     mode: box
 
   - platform: template
-    id: display_night_lux_threshold
-    name: "${friendly_name} Night Lux Threshold"
+    id: display_dark_lux_threshold
+    name: "${friendly_name} Dark Lux Threshold"
     icon: mdi:weather-night
     entity_category: config
     optimistic: true
     restore_value: true
-    initial_value: "${display_night_lux_threshold_default}"
+    initial_value: "${display_dark_lux_threshold_default}"
     unit_of_measurement: "lx"
     min_value: 0
     max_value: 200
@@ -749,13 +768,41 @@ number:
     mode: box
 
   - platform: template
-    id: display_day_active_brightness
-    name: "${friendly_name} Day Touch Brightness"
-    icon: mdi:brightness-7
+    id: display_bright_lux_threshold
+    name: "${friendly_name} Bright Lux Threshold"
+    icon: mdi:white-balance-sunny
     entity_category: config
     optimistic: true
     restore_value: true
-    initial_value: "${display_day_active_brightness_default}"
+    initial_value: "${display_bright_lux_threshold_default}"
+    unit_of_measurement: "lx"
+    min_value: 25
+    max_value: 1000
+    step: 5
+    mode: box
+
+  - platform: template
+    id: display_dark_touch_brightness
+    name: "${friendly_name} Dark Touch Brightness"
+    icon: mdi:brightness-3
+    entity_category: config
+    optimistic: true
+    restore_value: true
+    initial_value: "${display_dark_touch_brightness_default}"
+    unit_of_measurement: "%"
+    min_value: 2
+    max_value: 60
+    step: 1
+    mode: slider
+
+  - platform: template
+    id: display_normal_touch_brightness
+    name: "${friendly_name} Normal Touch Brightness"
+    icon: mdi:brightness-6
+    entity_category: config
+    optimistic: true
+    restore_value: true
+    initial_value: "${display_normal_touch_brightness_default}"
     unit_of_measurement: "%"
     min_value: 5
     max_value: 100
@@ -763,27 +810,41 @@ number:
     mode: slider
 
   - platform: template
-    id: display_night_active_brightness
-    name: "${friendly_name} Night Touch Brightness"
-    icon: mdi:brightness-4
+    id: display_bright_touch_brightness
+    name: "${friendly_name} Bright Touch Brightness"
+    icon: mdi:brightness-7
     entity_category: config
     optimistic: true
     restore_value: true
-    initial_value: "${display_night_active_brightness_default}"
+    initial_value: "${display_bright_touch_brightness_default}"
     unit_of_measurement: "%"
-    min_value: 2
-    max_value: 80
+    min_value: 10
+    max_value: 100
     step: 1
     mode: slider
 
   - platform: template
-    id: display_day_dim_brightness
-    name: "${friendly_name} Day Dim Brightness"
-    icon: mdi:brightness-5
+    id: display_dark_clock_brightness
+    name: "${friendly_name} Dark Clock Brightness"
+    icon: mdi:clock-outline
     entity_category: config
     optimistic: true
     restore_value: true
-    initial_value: "${display_day_dim_brightness_default}"
+    initial_value: "${display_dark_clock_brightness_default}"
+    unit_of_measurement: "%"
+    min_value: 1
+    max_value: 30
+    step: 1
+    mode: slider
+
+  - platform: template
+    id: display_normal_clock_brightness
+    name: "${friendly_name} Normal Clock Brightness"
+    icon: mdi:clock-outline
+    entity_category: config
+    optimistic: true
+    restore_value: true
+    initial_value: "${display_normal_clock_brightness_default}"
     unit_of_measurement: "%"
     min_value: 1
     max_value: 60
@@ -791,16 +852,16 @@ number:
     mode: slider
 
   - platform: template
-    id: display_night_dim_brightness
-    name: "${friendly_name} Night Dim Brightness"
-    icon: mdi:brightness-3
+    id: display_bright_clock_brightness
+    name: "${friendly_name} Bright Clock Brightness"
+    icon: mdi:clock-outline
     entity_category: config
     optimistic: true
     restore_value: true
-    initial_value: "${display_night_dim_brightness_default}"
+    initial_value: "${display_bright_clock_brightness_default}"
     unit_of_measurement: "%"
-    min_value: 1
-    max_value: 40
+    min_value: 5
+    max_value: 100
     step: 1
     mode: slider
 
@@ -856,8 +917,11 @@ sensor:
   #
   #   lux = voltage x configurable multiplier
   #
-  # Calibration, threshold, brightness and delay values are persistent ESPHome
+  # Calibration, thresholds, brightness and delay values are persistent ESPHome
   # number entities and can be adjusted from Home Assistant.
+  #
+  # GPIO20 is sampled every second. The median filter publishes every third
+  # sample, and the template lux value updates every three seconds.
 
   - platform: adc
     id: ambient_light_voltage
@@ -1446,6 +1510,12 @@ globals:
     restore_value: true
     initial_value: "0"
 
+  # True while the screen is using idle/clock brightness.
+  - id: display_is_dimmed
+    type: bool
+    restore_value: false
+    initial_value: "false"
+
   # True only while the Security page is visible.
   - id: security_page_active
     type: bool
@@ -1468,25 +1538,55 @@ script:
   # ADAPTIVE DISPLAY BACKLIGHT
   #:######################################################################################:#
   #
-  # Brightness is selected only at touch/idle transitions. It is not changed
-  # continuously as lux moves, preventing feedback from the display backlight.
+  # Three ambient ranges are used:
+  #   Dark:   lux <= Dark Lux Threshold
+  #   Normal: between the two thresholds
+  #   Bright: lux >= Bright Lux Threshold
+  #
+  # The active and clock/idle brightness levels are independently adjustable
+  # and restored after reboot.
 
   - id: apply_active_backlight
     mode: restart
     then:
+      - lambda: |-
+          id(display_is_dimmed) = false;
+
       - light.turn_on:
           id: display_backlight
           brightness: !lambda |-
             const float lux = id(ambient_light_illuminance).state;
-            const float threshold = id(display_night_lux_threshold).state;
+
+            float dark_threshold =
+              id(display_dark_lux_threshold).state;
+            float bright_threshold =
+              id(display_bright_lux_threshold).state;
+
+            if (isnan(dark_threshold)) {
+              dark_threshold = 20.0f;
+            }
+
+            if (
+              isnan(bright_threshold) ||
+              bright_threshold <= dark_threshold
+            ) {
+              bright_threshold = 250.0f;
+            }
+
             float brightness_percent;
 
-            if (isnan(lux) || lux <= threshold) {
+            if (isnan(lux) || lux <= dark_threshold) {
               brightness_percent =
-                id(display_night_active_brightness).state;
+                id(display_dark_touch_brightness).state;
+              id(ambient_light_band_text).publish_state("Dark");
+            } else if (lux >= bright_threshold) {
+              brightness_percent =
+                id(display_bright_touch_brightness).state;
+              id(ambient_light_band_text).publish_state("Bright");
             } else {
               brightness_percent =
-                id(display_day_active_brightness).state;
+                id(display_normal_touch_brightness).state;
+              id(ambient_light_band_text).publish_state("Normal");
             }
 
             if (isnan(brightness_percent)) {
@@ -1502,19 +1602,44 @@ script:
   - id: apply_dim_backlight
     mode: restart
     then:
+      - lambda: |-
+          id(display_is_dimmed) = true;
+
       - light.turn_on:
           id: display_backlight
           brightness: !lambda |-
             const float lux = id(ambient_light_illuminance).state;
-            const float threshold = id(display_night_lux_threshold).state;
+
+            float dark_threshold =
+              id(display_dark_lux_threshold).state;
+            float bright_threshold =
+              id(display_bright_lux_threshold).state;
+
+            if (isnan(dark_threshold)) {
+              dark_threshold = 20.0f;
+            }
+
+            if (
+              isnan(bright_threshold) ||
+              bright_threshold <= dark_threshold
+            ) {
+              bright_threshold = 250.0f;
+            }
+
             float brightness_percent;
 
-            if (isnan(lux) || lux <= threshold) {
+            if (isnan(lux) || lux <= dark_threshold) {
               brightness_percent =
-                id(display_night_dim_brightness).state;
+                id(display_dark_clock_brightness).state;
+              id(ambient_light_band_text).publish_state("Dark");
+            } else if (lux >= bright_threshold) {
+              brightness_percent =
+                id(display_bright_clock_brightness).state;
+              id(ambient_light_band_text).publish_state("Bright");
             } else {
               brightness_percent =
-                id(display_day_dim_brightness).state;
+                id(display_normal_clock_brightness).state;
+              id(ambient_light_band_text).publish_state("Normal");
             }
 
             if (isnan(brightness_percent)) {
@@ -1525,7 +1650,7 @@ script:
               std::max(1.0f, std::min(100.0f, brightness_percent));
 
             return brightness_percent / 100.0f;
-          transition_length: 1000ms
+          transition_length: 700ms
 
   #:######################################################################################:#
   # BOTTOM NAVIGATION LIVE TIME
@@ -3761,6 +3886,27 @@ script:
 # Update minute-resolution clock values locally
 #:########################################################################################:#
 interval:
+  # Re-evaluate the screen against the latest filtered lux reading. This allows
+  # the clock to brighten during the day and dim again as the room gets darker.
+  - interval: "${adaptive_backlight_recheck_interval}"
+    then:
+      - if:
+          condition:
+            lambda: |-
+              return id(lvgl_ready);
+
+          then:
+            - if:
+                condition:
+                  lambda: |-
+                    return id(display_is_dimmed);
+
+                then:
+                  - script.execute: apply_dim_backlight
+
+                else:
+                  - script.execute: apply_active_backlight
+
   - interval: 10s
     then:
       - if:
@@ -3894,6 +4040,16 @@ switch:
 # https://esphome.io/components/text_sensor/
 #:########################################################################################:#
 text_sensor:
+  #:######################################################################################:#
+  # AMBIENT LIGHT DIAGNOSTICS
+  #:######################################################################################:#
+  - platform: template
+    id: ambient_light_band_text
+    name: "${friendly_name} Ambient Light Band"
+    icon: mdi:theme-light-dark
+    entity_category: diagnostic
+    update_interval: never
+
   #:######################################################################################:#
   # BEDROOM / CLOCK STATUS TEXT
   #:######################################################################################:#