.slash-completion {
  position: fixed;
  z-index: 100;
  overflow-y: auto;
  overscroll-behavior: contain;
  box-sizing: border-box;
  border: 1px solid var(--border, #777);
  border-radius: 8px;
  background: var(--bg, #191919);
  color: var(--fg, #eee);
  box-shadow: 0 -4px 20px #0003;
  padding: 4px;
}
.slash-completion[hidden] { display: none; }
.slash-completion [role="option"] { padding: 8px 10px; border-radius: 4px; cursor: pointer; }
.slash-completion [role="option"][aria-selected="true"] { background: var(--bg-hover, #ffffff18); outline: 1px solid var(--border, #777); }
.slash-completion strong { display: block; font-size: 13px; }
.slash-completion span { display: block; font-size: 12px; opacity: .8; }
.slash-completion [role="option"][aria-disabled="true"] { cursor: not-allowed; opacity: .45; }