/* ============================================================
   SP ALUMÍNIO — BLOG CSS v1.0
   Story 2.1: Componentes específicos do blog
   Reutiliza Design System v4.0 (vars, fonts, spacing do below-fold.css)
============================================================ */

/* --- Blog Listing Page --- */
.blog-hero {
  background: #0A0A0A;
  padding: var(--s-10) 0 var(--s-8);
  margin-top: 76px;
}

.blog-hero h1 {
  font-family: var(--font-titulo);
  font-weight: 800;
  font-size: clamp(28px, 3.5vw, 44px);
  color: #FAF5EB;
  letter-spacing: -0.5px;
  margin-bottom: var(--s-2);
}

.blog-hero p {
  font-size: 17px;
  color: rgba(250,245,235,0.7);
  max-width: 600px;
  line-height: 1.6;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--s-4);
  padding: var(--s-8) 0;
}

.blog-card {
  border: 1px solid var(--cinza-borda);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  background: var(--bg-secondary, var(--branco));
}

.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--preto-sp);
}

.blog-card-img {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-tertiary, var(--cinza-bg));
}

.blog-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.blog-card-body {
  padding: var(--s-3) var(--s-3) var(--s-4);
}

.blog-card-meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--aluminio-dark);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: var(--s-1);
  display: flex;
  gap: 12px;
  align-items: center;
}

.blog-card-meta .cat {
  color: var(--laranja-sp);
  font-weight: 600;
}

.blog-card h2 {
  font-family: var(--font-titulo);
  font-weight: 700;
  font-size: 22px;
  color: var(--preto-sp);
  line-height: 1.3;
  margin-bottom: var(--s-1);
  letter-spacing: -0.3px;
}

.blog-card p {
  font-size: 15px;
  color: var(--cinza-medio);
  line-height: 1.6;
  margin-bottom: var(--s-2);
}

.blog-card-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 0;
  font-family: var(--font-titulo);
  font-weight: 700;
  font-size: 13px;
  color: var(--laranja-sp);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: transform 0.2s ease;
}

.blog-card-link:hover { color: var(--laranja-dark); transform: translateX(4px); }

/* --- Article Page --- */
.article-header {
  background: #0A0A0A;
  padding: var(--s-10) 0 var(--s-6);
  margin-top: 76px;
}

.article-breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(250,245,235,0.4);
  margin-bottom: var(--s-3);
}

.article-breadcrumb a {
  color: rgba(250,245,235,0.75);
  transition: color 0.2s;
}

.article-breadcrumb a:hover { color: var(--laranja-sp); }
.article-breadcrumb .sep { margin: 0 8px; color: rgba(250,245,235,0.3); }

.article-meta {
  display: flex;
  gap: 16px;
  align-items: center;
  margin-bottom: var(--s-3);
  flex-wrap: wrap;
}

.article-meta-item {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--aluminio);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 6px;
}

.article-meta-cat {
  background: rgba(232,113,10,0.15);
  color: var(--laranja-sp);
  padding: 4px 12px;
  border-radius: 2px;
  font-weight: 600;
}

.article-header h1 {
  font-family: var(--font-titulo);
  font-weight: 800;
  font-size: clamp(26px, 3.5vw, 42px);
  color: #FAF5EB;
  line-height: 1.15;
  letter-spacing: -0.5px;
  max-width: 760px;
}

/* AC8: Article body — reading UX (@ux-design-expert) */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: var(--s-6);
  padding: var(--s-8) 0;
  max-width: 1060px;
  margin: 0 auto;
}

.article-body {
  max-width: 720px;
  font-family: var(--font-corpo);
  font-size: 17px;
  line-height: 1.8;
  color: var(--cinza-escuro);
 
}

.article-body h2 {
  font-family: var(--font-titulo);
  font-weight: 700;
  font-size: 26px;
  color: var(--preto-sp);
  margin: var(--s-6) 0 var(--s-2);
  letter-spacing: -0.3px;
  line-height: 1.2;
}

.article-body h3 {
  font-family: var(--font-titulo);
  font-weight: 700;
  font-size: 20px;
  color: var(--preto-sp);
  margin: var(--s-4) 0 var(--s-2);
  line-height: 1.3;
}

.article-body p {
  margin-bottom: var(--s-3);
}

.article-body img {
  width: 100%;
  border-radius: var(--radius-md);
  margin: var(--s-4) 0;
  box-shadow: var(--shadow-sm);
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--s-3) 0;
  font-size: 15px;
}

.article-body table th {
  background: #0A0A0A;
  color: #FAF5EB;
  padding: 12px 16px;
  text-align: left;
  font-family: var(--font-titulo);
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.article-body table td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--cinza-borda);
  color: var(--cinza-escuro);
}

.article-body table tr:nth-child(even) td {
  background: var(--bg-tertiary, var(--branco-quente));
}

.article-body blockquote {
  border-left: 4px solid var(--laranja-sp);
  padding: var(--s-2) var(--s-3);
  margin: var(--s-3) 0;
  background: var(--bg-tertiary, var(--branco-quente));
  font-style: italic;
  color: var(--cinza-escuro);
}

.article-body ul, .article-body ol {
  margin: var(--s-2) 0 var(--s-3);
  padding-left: var(--s-4);
}

.article-body li {
  margin-bottom: var(--s-1);
}

.article-body code {
  font-family: var(--font-mono);
  font-size: 14px;
  background: var(--bg-tertiary, var(--cinza-bg));
  padding: 2px 6px;
  border-radius: 2px;
  color: var(--preto-sp);
}

/* AC9: Table of Contents — sticky sidebar */
.article-sidebar {
  position: relative;
}

.article-toc {
  position: sticky;
  top: 100px;
  padding: var(--s-3);
  background: var(--bg-secondary, var(--branco-quente));
  border: 1px solid var(--cinza-borda);
  border-radius: var(--radius-md);
}

.article-toc-title {
  font-family: var(--font-titulo);
  font-weight: 700;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--preto-sp);
  margin-bottom: var(--s-2);
}

.article-toc ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.article-toc li {
  margin-bottom: 8px;
}

.article-toc a {
  font-size: 14px;
  color: var(--cinza-medio);
  line-height: 1.4;
  transition: color 0.2s;
  display: block;
}

.article-toc a:hover { color: var(--laranja-sp); }
.article-toc a.active { color: var(--laranja-sp); font-weight: 600; }
.article-toc a:focus-visible { outline: 2px solid var(--laranja-sp); outline-offset: 4px; }

/* Article CTA */
.article-cta {
  background: #0A0A0A;
  border: 1px solid rgba(232,113,10,0.3);
  border-radius: 6px;
  padding: var(--s-5) var(--s-4);
  margin: var(--s-8) 0 var(--s-4);
  text-align: center;
}

.article-cta h3 {
  font-family: var(--font-titulo);
  font-weight: 700;
  font-size: 22px;
  color: #FAF5EB;
  margin-bottom: var(--s-2);
}

.article-cta p {
  color: rgba(250,245,235,0.6);
  margin-bottom: var(--s-3);
  font-size: 16px;
}

.article-cta .btn-primary {
  display: inline-flex;
}

/* Related articles */
.article-related {
  padding: var(--s-8) 0;
  border-top: 1px solid var(--cinza-borda);
  color: var(--cinza-escuro);
}

.article-related h2 {
  font-family: var(--font-titulo);
  font-weight: 700;
  font-size: 24px;
  color: var(--preto-sp);
  margin-bottom: var(--s-4);
}

/* FAQ Section */
.article-faq {
  margin: var(--s-6) 0;
  padding: var(--s-4);
  background: var(--bg-secondary, var(--branco-quente));
  border: 1px solid var(--cinza-borda);
  border-radius: var(--radius-md);
}

.article-faq h2 {
  margin-top: 0;
}

.faq-item {
  border-bottom: 1px solid var(--cinza-borda);
  padding: var(--s-2) 0;
}

.faq-item:last-child { border-bottom: none; }

.faq-question {
  font-family: var(--font-titulo);
  font-weight: 700;
  font-size: 16px;
  color: var(--preto-sp);
  margin-bottom: var(--s-1);
}

.faq-answer {
  font-size: 15px;
  color: var(--cinza-escuro);
  line-height: 1.7;
}

/* --- Responsive --- */
@media (max-width: 900px) {
  .article-layout {
    grid-template-columns: 1fr;
  }
  .article-sidebar { display: none; }
  /* AC9: ToC colapsável mobile — exibir no header do artigo */
  .article-toc-mobile {
    display: block;
    margin: var(--s-3) 0;
    padding: var(--s-2) var(--s-3);
    background: var(--bg-secondary, var(--branco-quente));
    border: 1px solid var(--cinza-borda);
    border-radius: var(--radius-md);
  }
}

@media (min-width: 901px) {
  .article-toc-mobile { display: none; }
}

@media (max-width: 800px) {
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { display: none; }
}

@media (max-width: 600px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }
  .article-body {
    font-size: 16px;
  }
  .article-header h1 {
    font-size: 24px;
  }
}

@media (max-width: 480px) {
  .blog-hero { padding: var(--s-6) 0 var(--s-4); }
  .blog-hero h1 { font-size: 24px; }
}

/* ============================================================
   FOOTER COMPLETO (replicado do below-fold.css para blog)
============================================================ */
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: var(--s-6);
  margin-bottom: var(--s-7);
}
.footer-brand .footer-logo {
  width: auto; height: 90px;
  margin-bottom: var(--s-3); opacity: 0.95;
}
.footer-brand h3 {
  font-family: var(--font-titulo); font-weight: 800;
  font-size: 20px; color: #FAF5EB;
  margin-bottom: 4px; letter-spacing: -0.3px;
}
.footer-brand .footer-tagline {
  font-size: 13px; color: var(--laranja-sp);
  font-style: italic; font-weight: 600;
  margin-bottom: var(--s-3);
}
.footer-brand p {
  font-size: 13px; color: rgba(255,255,255,0.5);
  line-height: 1.7; margin-bottom: var(--s-2);
}
.footer-col h4 {
  font-family: var(--font-titulo); font-weight: 700;
  font-size: 12px; letter-spacing: 2px;
  text-transform: uppercase; color: var(--aluminio);
  margin-bottom: var(--s-3); padding-bottom: var(--s-1);
  border-bottom: 2px solid rgba(232,113,10,0.4);
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a {
  font-size: 14px; color: rgba(255,255,255,0.6);
  transition: all 0.2s ease;
  display: inline-flex; align-items: center; gap: 6px;
}
.footer-col ul li a:hover { color: var(--laranja-sp); transform: translateX(3px); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: var(--s-3) 0;
  display: flex; justify-content: space-between;
  align-items: center; flex-wrap: wrap; gap: 12px;
}
.footer-bottom p { font-size: 12px; color: rgba(255,255,255,0.55); }
.footer-bottom-tagline {
  font-size: 12px; color: var(--aluminio);
  font-style: italic; font-weight: 500;
}
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--s-4); }
}
@media (max-width: 600px) {
  .footer-grid { grid-template-columns: 1fr; }
}