Mushrooms cards icon alignment

Dear community, this may seem stupid, but i’m not able to align the icon of a simple gauge i have:

image

type: custom:stack-in-card
cards:
  - type: custom:layout-card
    layout_type: custom:grid-layout
    layout:
      grid-template-columns: 42px auto
      margin: "-4px -4px -8px -4px;"
    cards:
      - type: custom:mushroom-template-card
        icon: mdi:lightning-bolt
        icon_color: grey
        card_mod:
          style: |
            ha-card {
              background: none;
              --ha-card-box-shadow: 0px;   
            }            
      - type: custom:bar-card
        entity: sensor.battery_level
        height: 42px
        min: "0"
        max: "100"
        entity_row: true
        severity:
          - color: rgb(var(--mush-rgb-red))
            from: 0
            to: 33
          - color: rgb(var(--mush-rgb-orange))
            from: 34
            to: 66
          - color: rgb(var(--mush-rgb-green))
            from: 67
            to: 100
        positions:
          icon: "off"
          indicator: "off"
        card_mod:
          style: |
            ha-card {
              padding: 12px;
              margin-left: 12px;
              --bar-card-border-radius: 12px;
              --mush-rgb-red: 244, 67, 54;
              --mush-rgb-pink: 233, 30, 99;
              --mush-rgb-purple: 156, 39, 176;
              --mush-rgb-deep-purple: 103, 58, 183;
              --mush-rgb-indigo: 63, 81, 181;
              --mush-rgb-blue: 33, 150, 243;
              --mush-rgb-light-blue: 3, 169, 244;
              --mush-rgb-cyan: 0, 188, 212;
              --mush-rgb-teal: 0, 150, 136;
              --mush-rgb-green: 76, 175, 80;
              --mush-rgb-light-green: 139, 195, 74;
              --mush-rgb-lime: 205, 220, 57;
              --mush-rgb-yellow: 255, 235, 59;
              --mush-rgb-amber: 255, 193, 7;
              --mush-rgb-orange: 255, 152, 0;
              --mush-rgb-deep-orange: 255, 87, 34;
              --mush-rgb-brown: 121, 85, 72;
              --mush-rgb-grey: 158, 158, 158;
              --mush-rgb-blue-grey: 96, 125, 139;
              --mush-rgb-black: 0, 0, 0;
              --mush-rgb-white: 255, 255, 255;
            }
            bar-card-value {
              margin: 12px;
              font-size: 16px;
              font-weight: bolder;
            }
            bar-card-name {
              margin: 12px;
              font-size: 16px;
              font-weight: bolder;
            }
            bar-card-backgroundbar {
              opacity: 0.2;
              filter: brightness(1);
            }

many thanks for your help