============================================ */
.btn:focus-visible,
.suggestion-chip:focus-visible,
.source-card:focus-visible,
.message-action-btn:focus-visible {
    outline: 2px solid #0052cc;
    outline-offset: 2px;
}

/* Screen reader only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;