SHighlightedButtonTrigger:not([state="invalid"]):not([state="valid"]) {
  border: 1px solid transparent;
  background:
    linear-gradient(white, white) padding-box,
    var(--intergalactic-border-feature-highlight, linear-gradient(90deg in oklch, oklch(0.82 0.118 303), oklch(0.82 0.088 272.1))) border-box;
  background-origin: border-box;
  background-clip: padding-box, border-box;
  position: relative;
  z-index: 1;

  &::before {
    content: "";
    position: absolute;
    z-index: -1;
    inset: 0;
    margin: -5px;
    padding: 2px;
    border-radius: calc(var(--intergalactic-control-rounded, 6px) + 3px);
    background-image: var(--intergalactic-keyboard-focus-feature-highlight-outline, linear-gradient(90deg in oklch, oklch(0.74 0.17 303), oklch(0.58 0.168 278.2)));

    mask: linear-gradient(0deg, #fff, #fff) content-box, linear-gradient(0deg, #fff, #fff);
    mask-composite: exclude;

    opacity: 0;
    transform: scale(0.96);
    pointer-events: none;

    transition:
      opacity calc(var(--intergalactic-duration-extra-fast, 100) * 1ms) ease-in-out,
      transform calc(var(--intergalactic-duration-extra-fast, 100) * 1ms) ease-in-out;
  }

  &:hover {
    background: var(--intergalactic-bg-primary-feature-highlight-hover-active, linear-gradient(90deg in oklch, oklch(0.97 0.019 303.4), oklch(0.929 0.037 268))) padding-box,
      var(--intergalactic-border-feature-highlight, linear-gradient(90deg in oklch, oklch(0.82 0.118 303), oklch(0.82 0.088 272.1))) border-box;
  }

  &:active,
  &[active] {
    background:
      linear-gradient(white, white) padding-box,
      var(--intergalactic-control-primary-feature-highlight-hover, linear-gradient(90deg in oklch, oklch(0.64 0.223 299.3), oklch(0.74 0.117 274.1))) border-box;
    background-origin: border-box;
    background-clip: padding-box, border-box;
    border-color: transparent;
  }

  &:focus-visible {
    outline: none;
    border-color: transparent;

    &::before {
      opacity: 1;
      transform: scale(1);
    }
  }

  &[neighborLocation='left']::before {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
  }

  &[neighborLocation='right']::before {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
  }

  &[neighborLocation='both']::before {
    border-radius: 0;
  }
}

/* Firefox fallback */
@supports not (-webkit-mask-composite: xor) {

  SHighlightedButtonTrigger:not([state="invalid"]):not([state="valid"]):focus-visible {
    outline: none;
    box-shadow:
      0 0 0 2px #ffffff,
      0 0 0 4px #7078FC;
  }

  SHighlightedButtonTrigger:not([state="invalid"]):not([state="valid"]):focus-visible::before {
    display: none;
  }
}