Optimized CSS generation, auto generated on base color

group_vars/all/13_theming.yml

@@ -2,19 +2,12 @@ global_theming:
   enabled: true
   css:
     colors:
-      # For buttons and highlights – symbolizes the sea (slate blue)
-      primary: "#4F6D7A"
-      # For navigation, footers, etc. – a subtly light brown with a grayish tint (earth)
-      secondary: "#C8A28F"
-      # For the general (light mode) background – an azul, blue–gray tone
-      background: "#DCE6F2"
-      # For dark mode: a dark, blue–gray background
-      background_dark: "#2E3B4E"
-      # For the text – true black
-      text: "#2E3B4E"
-      # Accent color (e.g., for links or buttons) – a golden tone symbolizing the sun
-      accent: "#FFD700"
-      # As the positive/success color – a light, slightly grayish green (forest)
+      # General Colors
+      base: "#001f3f"
+
+      # Special Action Colors
+
+      # Sucess Color
       success: "#B2D3B2"
       # As the warning color – a light brown (earth)
       warning: "#D2B48C"
@@ -22,20 +15,4 @@ global_theming:
       error: "#DC3545"
       # As the info color – a very light blue (symbolizing the sky)
       info: "#F0F8FF"
-      # Links – in this case, identical to primary (sea)
-      link: "#4F6D7A"
-      # Button text – white
-      button_text: "#FFFFFF"
-      # Shadows & borders (unchanged)
-      shadow: "rgba(0, 0, 0, 0.1)"
-      border: "#DDDDDD"
-      # New settings for cards and buttons:
-      # Cards: a slightly lighter tone than the background for subtle differentiation
-      card_bg_color: "#E6EFF9"
-      # Buttons: a background that is only a bit darker than the main background and in a blue tone
-      button_bg_color: "#C6D7E6"
-      # Bold, larger shadow for containers (cards, dropdowns, etc.)
-      large_shadow: "4px 4px 15px rgba(0, 0, 0, 0.2)"
-      # Reduced shadow for buttons
-      small_shadow: "1px 1px 3px rgba(0, 0, 0, 0.1)"
 global_theming_enabled: true

roles/nginx-global-css/filter_plugins/color_filters.py

@@ -1,19 +1,66 @@
-def adjust_color(hex_color, amount):
-    # Remove the leading '#' if present
+import colorsys
+
+def adjust_color(hex_color, lightness_change=0, hue_shift=0, saturation_change=0):
+    """
+    Adjust a HEX color in HSL space.
+    @See https://chatgpt.com/c/67b08ad4-eb58-800f-80cc-f1b22d8c64f3
+    
+    - lightness_change: Percentage points to add or subtract from lightness (0-100 => 0-1 in HSL).
+    - hue_shift: Degrees to shift hue (e.g., +180 for complementary).
+    - saturation_change: Percentage points to add or subtract from saturation (0-100 => 0-1 in HSL).
+    
+    Uses a 'cyclical' approach for lightness and saturation:
+      If the new value goes above 1, it wraps around (subtract 1).
+      If it goes below 0, it wraps around (add 1).
+    This creates strong contrast when crossing boundaries.
+    """
+
+    # Strip leading '#' if present
     hex_color = hex_color.lstrip('#')
     
-    # Extract the RGB components
+    # Parse the original RGB values
     r = int(hex_color[0:2], 16)
     g = int(hex_color[2:4], 16)
     b = int(hex_color[4:6], 16)
     
-    # Adjust the values, ensuring they remain within the range 0-255
-    r = max(0, min(255, r + amount))
-    g = max(0, min(255, g + amount))
-    b = max(0, min(255, b + amount))
+    # Convert from [0..255] range to [0..1] for colorsys
+    r /= 255.0
+    g /= 255.0
+    b /= 255.0
     
-    # Convert the values back into a hexadecimal string
-    return '#{0:02x}{1:02x}{2:02x}'.format(r, g, b)
+    # Convert RGB -> HLS (note: in Python, it's Hue, Lightness, Saturation)
+    # Hue, Lightness, Saturation are each in [0..1]
+    h, l, s = colorsys.rgb_to_hls(r, g, b)
+    
+    # Shift hue by (hue_shift / 360)
+    # e.g., hue_shift=180 => shift by 0.5 in HLS space
+    h = (h + (hue_shift / 360.0)) % 1.0
+    
+    # Shift saturation (cyc wrap)
+    # saturation_change is e.g. +20 => +0.20 in HLS
+    s_new = s + (saturation_change / 100.0)
+    if s_new > 1:
+        s_new -= 1
+    elif s_new < 0:
+        s_new += 1
+    
+    # Shift lightness (cyc wrap)
+    # lightness_change is e.g. +30 => +0.30 in HLS
+    l_new = l + (lightness_change / 100.0)
+    if l_new > 1:
+        l_new -= 1
+    elif l_new < 0:
+        l_new += 1
+    
+    # Convert back to RGB
+    new_r, new_g, new_b = colorsys.hls_to_rgb(h, l_new, s_new)
+    
+    # Scale back to [0..255]
+    new_r = int(new_r * 255)
+    new_g = int(new_g * 255)
+    new_b = int(new_b * 255)
+    
+    return '#{:02x}{:02x}{:02x}'.format(new_r, new_g, new_b)
 
 class FilterModule(object):
     '''Custom filters for Ansible'''

roles/nginx-global-css/templates/global.css.j2

@@ -7,25 +7,42 @@ HINT: Better overwritte CSS variables instead of individual elements.
 */
 
 :root {
-    --primary-color:    {{ global_theming.css.colors.primary }};
-    --secondary-color:  {{ global_theming.css.colors.secondary }};
-    --brightest-color:  {{ global_theming.css.colors.button_text }};
-    --bright-color:     {{ global_theming.css.colors.background }};
-    --dark-color:       {{ global_theming.css.colors.background_dark }};
+    /** Derived Colors from the Base Color **/
+
+    /* Primary Color: the base color itself */
+    --primary-color:       {{ global_theming.css.colors.base }};
+    
+    /* Secondary Color: slightly lightened */
+    --secondary-color:     {{ global_theming.css.colors.base | adjust_color(15) }};
+    
+    /* Complementary Color: moderately lightened to fall within a mid-brightness range */
+    --complementary-color: {{ global_theming.css.colors.base | adjust_color(30) }};
+    
+    /* Bright Background: significantly lightened */
+    --bright-color:        {{ global_theming.css.colors.base | adjust_color(45) }};
+    
+    /* Brightest Tone (e.g., for button text or accents): nearly white */
+    --brightest-color:     {{ global_theming.css.colors.base | adjust_color(60) }};
+    
+    /* Dark Background: a darker variant of the base color */
+    --dark-color:          {{ global_theming.css.colors.base | adjust_color(-30) }};
+    
+    /* Border Color: slightly offset with a light adjustment */
+    --border-color:        {{ global_theming.css.colors.base | adjust_color(10) }};
+    
+    /* Button Background: a gentle lightening for soft contrast */
+    --button-bg-color:     {{ global_theming.css.colors.base | adjust_color(20) }};
+
+    /** Special Action Colors **/
     --success-color:    {{ global_theming.css.colors.success }};
     --warning-color:    {{ global_theming.css.colors.warning }};
     --error-color:      {{ global_theming.css.colors.error }};
     --info-color:       {{ global_theming.css.colors.info }};
-    --shadow-color:     {{ global_theming.css.colors.shadow }};
-    --border-color:     {{ global_theming.css.colors.border }};
 
-    /* New variables for cards and buttons */
-    --card-bg-color:    {{ global_theming.css.colors.card_bg_color }};
-    --large-shadow:     {{ global_theming.css.colors.large_shadow }};
-    --button-bg-color:  {{ global_theming.css.colors.button_bg_color }};
-    --small-shadow:     {{ global_theming.css.colors.small_shadow }};
 }
 
+
+
 /* Bootstrap Overrides (Color/Shadow Variables Only) */
 :root {
     --bs-primary: var(--primary-color);
@@ -42,11 +59,11 @@ HINT: Better overwritte CSS variables instead of individual elements.
 
 /** Keycloak Overrides **/ 
 :root{
-    --pf-v5-global--Color--100:         {{global_theming.css.colors.background_dark | adjust_color(10) }};
-    --pf-v5-global--Color--200:         {{global_theming.css.colors.background_dark | adjust_color(30) }};
-    --pf-v5-global--Color--light-100:   {{global_theming.css.colors.background_dark | adjust_color(0) }};
-    --pf-v5-global--Color--light-200:   {{global_theming.css.colors.background_dark | adjust_color(20) }};
-    --pf-v5-global--Color--light-300:   {{global_theming.css.colors.background_dark | adjust_color(40) }};
+    --pf-v5-global--Color--100:         {{  global_theming.css.colors.base | adjust_color(-30) }};
+    --pf-v5-global--Color--200:         {{  global_theming.css.colors.base | adjust_color(-10) }};
+    --pf-v5-global--Color--light-100:   {{  global_theming.css.colors.base | adjust_color(-30) }};
+    --pf-v5-global--Color--light-200:   {{  global_theming.css.colors.base | adjust_color(-10) }};
+    --pf-v5-global--Color--light-300:   {{  global_theming.css.colors.base | adjust_color(10) }};
 } 
 
 /** Mastodon Overrides **/
@@ -67,11 +84,18 @@ HINT: Better overwritte CSS variables instead of individual elements.
     --color-primary-element-light:  var(--secondary-color);
 }
 
-/* Peertube Overrides */
+/** Peertube **/
 :root {
     --mainColor: var(--primary-color);
 }
 
+/** Pixelfed **/
+:root {
+    --card-bg:          var(--complementary-color);
+    --light-gray:       var(--complementary-color);
+}
+
+
 /* Global Defaults (Colors Only) */
 body {
     background-color: var(--bright-color) !important;
@@ -125,7 +149,6 @@ input, textarea, select {
 }
 input:focus, textarea:focus, select:focus {
     border-color: var(--primary-color) !important;
-    /** box-shadow: 0 0 5px var(--shadow-color);**/
 }
 
 /* Navigation (Background and Text Colors) */
@@ -159,8 +182,7 @@ thead {
 /* Cards / Containers (Background, Border, and Shadow)
    Cards now use a slightly lighter background and a bold, clear shadow */
 .card {
-    background-color: var(--card-bg-color) !important;
-    /** box-shadow: var(--large-shadow) !important;**/
+    background-color: var(--complementary-color) !important;
     border-color: var(--border-color) !important;
 }
 
@@ -195,7 +217,7 @@ button.icon-button {
 
 /** Keycloak **/
 body#keycloak-bg main{
-    background-color: var(--card-bg-color) !important;
+    background-color: var(--complementary-color) !important;
 }
 
 div#app header, div#app header *{
@@ -204,7 +226,7 @@ div#app header, div#app header *{
 }
 
 div#app div#page-sidebar, div#app main#kc-main-content-page-container{
-    background-color: var(--card-bg-color) !important;
+    background-color: var(--complementary-color) !important;
 }
 
 div#app main#kc-main-content-page-container section,