Trying to adapt a style to use Rofi as a clipboard manager but failing

[Nicknamely]

I really liked the type6 style 7 and wanted to adapt it for use as a clipboard manager. I removed unnecessary elements like the image box, but I am stuck at configuring the configuration {} block. No matter what changes I make, Rofi still behaves as an app launcher instead of a clipboard manager.

Command I am using to launch Rofi:

dir="$HOME/.config/rofi/clipboard-man/"
theme='style-7'

## Run
rofi \
  -show drun \
  -theme ${dir}/${theme}.rasi | cliphist decode | wl-copy

Current in-progress style configuration:

/*****----- Configuration -----*****/
configuration {
    /* leaving empty because dmenu mode is explicitly used */
}

/*****----- Global Properties -----*****/
* {
    font:                        "JetBrains Mono Nerd Font 10";
    background:                  #1E1E2E;
    background-alt:              #181825;
    foreground:                  #CDD6F4;
    selected:                    #45475A;
    active:                      #A6ADC8;
    urgent:                      #F38BA8;
    highlight:                   #89B4FA; 
}

/*****----- Main Window -----*****/
window {
    transparency:                "real";
    location:                    center;
    anchor:                      center;
    fullscreen:                  false;
    width:                       800px; 
    height:                      600px; 
    x-offset:                    0px;
    y-offset:                    0px;

    enabled:                     true;
    border-radius:               15px;
    cursor:                      "default";
    background-color:            @background;
}

/*****----- Main Box -----*****/
mainbox {
    enabled:                     true;
    spacing:                     10px;
    padding:                     20px;
    background-color:            transparent;
    orientation:                 vertical;
    children:                    [ "listbox", "inputbar" ];
}

/*****----- Listbox -----*****/
listbox {
    spacing:                     15px;
    padding:                     20px;
    background-color:            transparent;
    orientation:                 vertical;
    children:                    [ "listview" ];
}

/*****----- Input Bar -----*****/
inputbar {
    enabled:                     true;
    spacing:                     10px;
    padding:                     15px;
    border-radius:               8px;
    background-color:            @background-alt;
    text-color:                  @foreground;
    children:                    [ "textbox-prompt-colon", "entry" ];
}
textbox-prompt-colon {
    enabled:                     true;
    expand:                      false;
    str:                         ""; 
    background-color:            inherit;
    text-color:                  inherit;
}
entry {
    enabled:                     true;
    background-color:            inherit;
    text-color:                  inherit;
    cursor:                      text;
    placeholder:                 "Search Clipboard Entries...";
    placeholder-color:           @foreground;
}

/*****----- Listview -----*****/
listview {
    enabled:                     true;
    columns:                     1;
    lines:                       10; 
    cycle:                       true;
    dynamic:                     true;
    scrollbar:                   true; 
    layout:                      vertical;
    reverse:                     false;
    fixed-height:                true;

    spacing:                     15px;
    background-color:            transparent;
    text-color:                  @foreground;
    cursor:                      "pointer";
}

/*****----- Elements -----*****/
element {
    enabled:                     true;
    spacing:                     10px;
    padding:                     15px;
    border-radius:               8px;
    background-color:            @background-alt;
    text-color:                  @foreground;
    cursor:                      pointer;
}
element normal.normal {
    background-color:            inherit;
    text-color:                  inherit;
}
element normal.urgent {
    background-color:            @urgent;
    text-color:                  @foreground;
}
element normal.active {
    background-color:            @active;
    text-color:                  @foreground;
}
element selected.normal {
    background-color:            @selected;
    text-color:                  @highlight; 
}
element selected.urgent {
    background-color:            @urgent;
    text-color:                  @foreground;
}
element selected.active {
    background-color:            @active;
    text-color:                  @foreground;
}
element-icon {
    background-color:            transparent;
    text-color:                  inherit;
    size:                        24px;
    cursor:                      inherit;
}

/*****----- Message -----*****/
message {
    background-color:            transparent;
}
textbox {
    padding:                     10px;
    border-radius:               8px;
    background-color:            @background-alt;
    text-color:                  @foreground;
    vertical-align:              0.5;
    horizontal-align:            0.0;
}
error-message {
    padding:                     10px;
    border-radius:               8px;
    background-color:            @background;
    text-color:                  @urgent;
}

I would appreciate any guidance on how to properly adapt this style to function as a clipboard manager.

[Nicknamely]

Also, how do i add shadow i to the box (layer?. Is it possible ?