/* =============================================================
   /shared/blog-article.css
   Componentes de NAVEGACAO/CIRCULACAO dos artigos do blog:
   breadcrumb + voltar (estilo "Editorial"), compartilhar em pilulas,
   tempo de leitura, barra de progresso, voltar-ao-topo, posts relacionados
   e a correcao de ancora (scroll-margin sob a navbar fixa).

   Usa as variaveis CSS ja definidas no :root de cada pagina do blog
   (--acc, --mono, --surface, --rule, etc). Importar DEPOIS de navbar-site.css.
   Comportamento: /shared/blog-article.js
   ============================================================= */

/* ===== FIX DE ANCORA: navbar fixa escondia o titulo ao clicar no indice ===== */
html { scroll-behavior: smooth; }
main [id], article [id] { scroll-margin-top: 116px; }
@media (max-width: 768px) { main [id], article [id] { scroll-margin-top: 92px; } }

/* ===== BREADCRUMB + VOLTAR AO BLOG (no topo do hero) ===== */
.back-link { display: inline-flex; align-items: center; gap: 8px; color: var(--acc); font-weight: 600; font-size: .9rem; margin-bottom: 14px; transition: gap .2s; }
.back-link i { font-size: .78rem; transition: transform .2s; }
.back-link:hover { gap: 12px; }
.back-link:hover i { transform: translateX(-3px); }
.crumbs { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; font-family: var(--mono); font-size: .66rem; letter-spacing: .04em; color: var(--dim); margin-bottom: 24px; font-variant-numeric: tabular-nums; }
.crumbs a { color: var(--dim); transition: color .2s; }
.crumbs a:hover { color: var(--acc); }
.crumbs .sep { color: var(--rule-strong); }
.crumbs .cur { color: var(--mut); }
@media (max-width: 480px) { .crumbs .cur { display: none; } }

/* ===== TEMPO DE LEITURA (na byline) ===== */
.byline .rt { color: var(--dim); }
.byline .rt::before { content: "·"; margin: 0 8px; color: var(--rule-strong); }

/* ===== COMPARTILHAR (pilulas com hover na cor de cada rede) ===== */
.share-pills { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-top: 20px; padding-top: 18px; border-top: 1px solid var(--rule); }
.share-pills .sp-label { font-family: var(--mono); font-size: .62rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--dim); margin-right: 2px; }
.share-pills a, .share-pills button { display: inline-flex; align-items: center; gap: 8px; padding: 8px 16px; border: 1px solid var(--rule-strong); background: transparent; color: var(--mut); font-family: 'Inter', system-ui, sans-serif; font-size: .82rem; font-weight: 500; border-radius: 24px; cursor: pointer; transition: color .2s, border-color .2s, background .2s; }
.share-pills a.wa:hover { color: #fff; background: #25D366; border-color: #25D366; }
.share-pills a.li:hover { color: #fff; background: #0A66C2; border-color: #0A66C2; }
.share-pills a.tw:hover { color: #fff; background: #111; border-color: #333; }
.share-pills button:hover { color: var(--acc); border-color: var(--acc); }
.share-pills .copied { color: #00FF88 !important; border-color: #00FF88 !important; }

/* ===== BARRA DE PROGRESSO DE LEITURA (topo) ===== */
.readbar { position: fixed; top: 0; left: 0; height: 3px; width: 0; background: linear-gradient(90deg, var(--acc), #0077FF); z-index: 1001; transition: width .08s linear; }

/* ===== VOLTAR AO TOPO (flutuante, canto inferior esquerdo) ===== */
.backtop { position: fixed; bottom: 26px; left: 24px; width: 46px; height: 46px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--rule-strong); background: rgba(22,24,29,.85); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); color: var(--dim); font-size: .9rem; border-radius: 4px; z-index: var(--z-overlay, 900); cursor: pointer; opacity: 0; visibility: hidden; transform: translateY(10px); transition: opacity .25s, transform .25s, color .2s, border-color .2s; }
.backtop.show { opacity: 1; visibility: visible; transform: translateY(0); }
.backtop:hover { color: var(--acc); border-color: var(--acc); }

/* ===== POSTS RELACIONADOS ===== */
.related { margin: 40px 0 8px; }
.related .rel-label { font-family: var(--mono); font-size: .66rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--dim); border-top: 1px solid var(--rule); padding-top: 14px; margin-bottom: 16px; font-variant-numeric: tabular-nums; }
.rel-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 620px) { .rel-grid { grid-template-columns: 1fr; } }
.rel-card { display: block; border: 1px solid var(--rule); background: var(--surface); padding: 20px 22px; transition: border-color .2s, transform .2s; }
.rel-card:hover { border-color: var(--acc); transform: translateY(-2px); }
.rel-card .rc-tag { font-family: var(--mono); font-size: .6rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--acc); }
.rel-card h4 { color: #fff; font-weight: 700; letter-spacing: -0.01em; font-size: 1.02rem; line-height: 1.3; margin: 10px 0 6px; }
.rel-card:hover h4 { color: var(--acc); }
.rel-card p { color: var(--mut); font-size: .86rem; margin: 0; }
.rel-card .rc-go { font-family: var(--mono); font-size: .66rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--dim); margin-top: 12px; display: inline-flex; align-items: center; gap: 6px; }
.rel-card:hover .rc-go { color: var(--acc); }