/* Shared article chrome — a discreet top-center pager: the home link
   flanked by previous/next arrows. Companion to post-progress.css; loaded
   the same way and derived from the manifest by post-nav.js.

   All three pieces share one pill language (dark translucent surface,
   mono microtype) so the cluster reads as a single quiet chrome row just
   under the reading bar. Neighbor titles appear as tooltips on hover and
   focus; the arrows themselves stay tiny. */

.vb-post-chrome {
    position: fixed;
    top: 14px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2147483000;
    display: flex;
    align-items: center;
    gap: 8px;
}

.vb-post-chrome a {
    color: #f4f1e8;
    text-decoration: none;
    font: 500 10px/1 ui-monospace, "SF Mono", Menlo, Consolas, monospace;
    letter-spacing: .16em;
    text-transform: uppercase;
    opacity: .8;
    border: 1px solid rgba(244, 241, 232, .34);
    background: rgba(14, 14, 12, .74);
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
    transition: opacity .18s ease, border-color .18s ease;
}

.vb-post-chrome a:hover,
.vb-post-chrome a:focus-visible {
    opacity: 1;
    border-color: rgba(244, 241, 232, .62);
}

.vb-post-chrome a:focus-visible {
    outline: 2px solid #f4f1e8;
    outline-offset: 2px;
}

/* ── Home pill ───────────────────────────────────────────── */

.vb-post-home {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 8px 13px;
    border-radius: 999px;
}

.vb-post-home i {
    font-style: normal;
    transition: transform .18s ease;
}

.vb-post-home:hover i,
.vb-post-home:focus-visible i {
    transform: translateX(-2px);
}

/* ── Previous / next arrows ──────────────────────────────── */

.vb-post-arrow {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 31px;
    height: 31px;
    padding: 0;
    border-radius: 50%;
    font-size: 13px;
    letter-spacing: 0;
}

.vb-post-arrow b {
    font-weight: 400;
    line-height: 1;
}

/* Neighbor title — a quiet tooltip that grows inward, so it can never
   clip the viewport edge. */
.vb-post-arrow::after {
    content: attr(data-title);
    position: absolute;
    top: calc(100% + 9px);
    padding: 6px 9px;
    border-radius: 3px;
    background: rgba(14, 14, 12, .9);
    border: 1px solid rgba(244, 241, 232, .22);
    white-space: nowrap;
    max-width: min(46vw, 300px);
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 9px;
    letter-spacing: .12em;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-2px);
    transition: opacity .18s ease, transform .18s ease;
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
    pointer-events: none;
}

.vb-post-arrow--prev::after {
    left: 0;
}

.vb-post-arrow--next::after {
    right: 0;
}

.vb-post-arrow:hover::after,
.vb-post-arrow:focus-visible::after {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    .vb-post-chrome a,
    .vb-post-home i,
    .vb-post-arrow::after {
        transition: none;
    }
}

@media print {
    .vb-post-chrome {
        display: none;
    }
}