opencode/packages/ui/src/components/hover-card.css

[data-slot="hover-card-trigger"] {
  display: flex;
  width: 100%;
  min-width: 0;
}

[data-component="hover-card-content"] {
  z-index: 50;
  min-width: 200px;
  max-width: 320px;
  border-radius: 8px;
  background-color: var(--surface-raised-stronger-non-alpha);
  pointer-events: auto;

  border: 1px solid color-mix(in oklch, var(--border-base) 50%, transparent);
  background-clip: padding-box;
  box-shadow: var(--shadow-md);

  transform-origin: var(--kb-hovercard-content-transform-origin);

  &:focus-within {
    outline: none;
  }

  &[data-closed] {
    animation: hover-card-close 0.15s ease-out;
  }

  &[data-expanded] {
    animation: hover-card-open 0.15s ease-out;
  }

  [data-slot="hover-card-body"] {
    padding: 4px;
  }
}

@keyframes hover-card-open {
  from {
    opacity: 0;
    transform: scale(0.96);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes hover-card-close {
  from {
    opacity: 1;
    transform: scale(1);
  }
  to {
    opacity: 0;
    transform: scale(0.96);
  }
}