/* ==========================================================
   Blog MPB — complementa ../style.css
   ========================================================== */

.blog-page .nav-bar {
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.blog-page .nav-logo {
  opacity: 1;
}

/* ---------- Cabeçalho do blog ---------- */

.blog-hero {
  max-width: 1500px;
  margin: 0 auto;
  padding: 190px 40px 70px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: end;
  border-bottom: 1px solid var(--line);
}

.blog-hero h1 {
  font-size: clamp(44px, 6vw, 96px);
  font-weight: 500;
  line-height: 1;
  margin-top: 20px;
}

.blog-hero h1 em {
  font-style: normal;
  color: var(--amarelo);
}

.blog-hero p {
  color: var(--muted);
  max-width: 480px;
  font-size: 17px;
}

/* ---------- Filtros ---------- */

.blog-filters {
  max-width: 1500px;
  margin: 0 auto;
  padding: 30px 40px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.filter {
  padding: 10px 18px;
  border: 1px solid var(--line);
  background: transparent;
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.3s, color 0.3s, border-color 0.3s;
}

.filter:hover {
  border-color: #fff;
}

.filter.is-active {
  background: var(--amarelo);
  border-color: var(--amarelo);
  color: #000;
}

/* ---------- Lista de posts ---------- */

.posts {
  max-width: 1500px;
  margin: 0 auto;
  padding: 40px 40px 140px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
}

.post-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 460px;
  border: 1px solid var(--line);
  margin: -1px 0 0 -1px;
  overflow: hidden;
  transition: background-color 0.5s;
}

.post-card:hover {
  background: #0d0d0d;
}

.post-card.is-hidden {
  display: none;
}

.post-cover {
  position: relative;
  height: 220px;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  padding: 22px 26px;
}

.post-cover .big-letter {
  position: absolute;
  right: 18px;
  top: 6px;
  font-size: 170px;
  font-weight: 300;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(255, 255, 255, 0.85);
  transition: transform 1s var(--ease);
}

.post-card:hover .big-letter {
  transform: translateY(-10px) rotate(-4deg);
}

.cover-amarelo { background: var(--amarelo); color: #000; }
.cover-amarelo .big-letter { -webkit-text-stroke-color: var(--verde); }
.cover-verde { background: var(--verde); }
.cover-azul { background: var(--azul); }
.cover-preto { background: #111; }

.post-tag {
  position: relative;
  z-index: 1;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.post-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 26px 26px 30px;
}

.post-meta {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.post-card h2 {
  font-size: clamp(20px, 1.6vw, 25px);
  font-weight: 600;
  line-height: 1.2;
  margin: 12px 0 12px;
}

.post-card p {
  color: var(--muted);
  font-size: 14px;
}

.post-read {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: auto;
  padding-top: 24px;
  font-size: 12px;
  font-weight: 600;
}

.post-read svg {
  width: 14px;
  height: 14px;
  transition: transform 0.4s var(--ease);
}

.post-card:hover .post-read svg {
  transform: translateX(4px);
}

.post-card:hover h2 {
  color: var(--amarelo);
}

.post-link::after {
  content: "";
  position: absolute;
  inset: 0;
}

/* Post em destaque ocupa 2 colunas */
.post-card.is-featured {
  grid-column: span 2;
  flex-direction: row;
}

.post-card.is-featured .post-cover {
  width: 50%;
  height: auto;
}

.post-card.is-featured .big-letter {
  font-size: 300px;
}

.post-card.is-featured .post-body {
  width: 50%;
  justify-content: center;
  padding: 40px;
}

.post-card.is-featured h2 {
  font-size: clamp(26px, 2.4vw, 38px);
}

/* ---------- Artigo ---------- */

.article-head {
  max-width: 900px;
  margin: 0 auto;
  padding: 180px 24px 50px;
}

.back-link {
  display: flex;
  width: fit-content;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  margin-bottom: 40px;
  transition: color 0.3s;
}

.back-link:hover {
  color: #fff;
}

.back-link svg {
  width: 14px;
  height: 14px;
  transform: rotate(180deg);
}

.article-head h1 {
  font-size: clamp(34px, 4.4vw, 60px);
  font-weight: 500;
  line-height: 1.08;
  margin: 18px 0 24px;
}

.article-head .lead {
  font-size: 19px;
  line-height: 1.6;
  color: var(--muted);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: 30px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--muted);
}

.article-cover {
  max-width: 1200px;
  height: 340px;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
}

.article-cover .big-letter {
  position: absolute;
  right: 6%;
  top: -30px;
  font-size: 420px;
  font-weight: 300;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 2px rgba(255, 255, 255, 0.85);
}

.article-cover.cover-amarelo .big-letter {
  -webkit-text-stroke-color: var(--verde);
}

.article-cover .brand-bar {
  position: absolute;
  left: 40px;
  bottom: 40px;
  width: 120px;
  height: 4px;
}

.article-body {
  max-width: 720px;
  margin: 0 auto;
  padding: 70px 24px 40px;
  font-size: 18px;
  line-height: 1.8;
  font-weight: 300;
}

.article-body p {
  margin: 0 0 24px;
}

.article-body h2 {
  font-size: clamp(24px, 2.2vw, 30px);
  font-weight: 600;
  line-height: 1.25;
  margin: 56px 0 18px;
}

.article-body strong {
  font-weight: 600;
}

.article-body ul,
.article-body ol {
  margin: 0 0 28px;
  padding-left: 22px;
}

.article-body li {
  margin-bottom: 10px;
}

.article-body blockquote {
  margin: 40px 0;
  padding: 6px 0 6px 24px;
  border-left: 3px solid var(--amarelo);
  font-size: 23px;
  line-height: 1.45;
  font-weight: 500;
}

.article-cta {
  max-width: 720px;
  margin: 30px auto 0;
  padding: 40px;
  background: var(--amarelo);
  color: #000;
}

.article-cta h2 {
  font-size: 28px;
  font-weight: 600;
  margin-bottom: 12px;
}

.article-cta p {
  margin-bottom: 26px;
}

.article-cta .btn-primary {
  background: #000;
  color: #fff;
}

.article-cta .btn-primary:hover {
  background: var(--verde);
}

.article-share {
  max-width: 720px;
  margin: 40px auto 0;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 13px;
  color: var(--muted);
}

.related {
  max-width: 1500px;
  margin: 120px auto 0;
  padding: 0 40px 140px;
}

.related h2 {
  font-size: clamp(26px, 2.4vw, 36px);
  font-weight: 500;
  margin: 16px 0 40px;
}

.related .posts {
  padding: 0;
  grid-template-columns: repeat(2, 1fr);
}

@media (max-width: 991px) {
  .blog-hero { grid-template-columns: 1fr; }
  .posts { grid-template-columns: 1fr 1fr; }
  .post-card.is-featured { grid-column: span 2; }
}

@media (max-width: 767px) {
  .blog-hero { padding: 140px 20px 50px; }
  .blog-filters { padding: 24px 20px 0; }
  .posts { grid-template-columns: 1fr; padding: 30px 20px 100px; }
  .post-card.is-featured { grid-column: auto; flex-direction: column; }
  .post-card.is-featured .post-cover,
  .post-card.is-featured .post-body { width: 100%; }
  .post-card.is-featured .post-cover { height: 240px; }
  .post-card.is-featured .big-letter { font-size: 190px; }
  .article-head { padding-top: 130px; }
  .article-cover { height: 220px; }
  .article-cover .big-letter { font-size: 260px; }
  .article-body { font-size: 17px; padding-top: 50px; }
  .article-cta { margin: 30px 20px 0; padding: 30px 24px; }
  .related { padding: 0 20px 100px; }
  .related .posts { grid-template-columns: 1fr; }
}

/* ==========================================================
   Artigos do plano editorial (SEO / GEO / AEO)
   ========================================================== */

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 34px;
  font-size: 13px;
  color: var(--muted);
}

.breadcrumb a:hover {
  color: #fff;
}

/* "Em resumo": resposta direta logo no topo */
.tldr {
  margin: 0 0 44px;
  padding: 26px 28px;
  border-left: 3px solid var(--amarelo);
  background: rgba(211, 188, 17, 0.08);
}

.tldr .eyebrow {
  display: block;
  margin-bottom: 10px;
  color: var(--amarelo);
}

.tldr p {
  margin: 0;
  font-size: 18px;
  line-height: 1.65;
  font-weight: 400;
}

.article-body h3 {
  font-size: 20px;
  font-weight: 600;
  margin: 34px 0 12px;
}

.article-body a {
  color: var(--amarelo);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-body small,
.article-body .source {
  font-size: 13px;
  color: var(--muted);
}

/* Tabelas */
.table-wrap {
  margin: 0 0 30px;
  overflow-x: auto;
  border: 1px solid var(--line);
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
  line-height: 1.5;
}

.article-body th,
.article-body td {
  padding: 13px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

.article-body th {
  font-weight: 600;
  background: rgba(255, 255, 255, 0.05);
}

.article-body tr:last-child td {
  border-bottom: 0;
}

/* Caixa "Na prática da MPB" */
.mpb-note {
  margin: 40px 0;
  padding: 28px;
  border: 1px solid var(--verde);
  background: rgba(52, 153, 71, 0.1);
}

.mpb-note .eyebrow {
  display: block;
  margin-bottom: 10px;
  color: #5fcf73;
}

.mpb-note p:last-child {
  margin-bottom: 0;
}

/* FAQ */
.faq-block {
  margin-top: 56px;
}

.faq-block details {
  border-top: 1px solid var(--line);
}

.faq-block details:last-child {
  border-bottom: 1px solid var(--line);
}

.faq-block summary {
  cursor: pointer;
  list-style: none;
  padding: 20px 34px 20px 0;
  position: relative;
  font-size: 17px;
  font-weight: 500;
}

.faq-block summary::-webkit-details-marker {
  display: none;
}

.faq-block summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 16px;
  font-size: 22px;
  color: var(--amarelo);
  transition: transform 0.3s var(--ease);
}

.faq-block details[open] summary::after {
  transform: rotate(45deg);
}

.faq-block details p {
  margin: 0 0 22px;
  color: var(--muted);
  font-size: 16px;
}

/* Autor */
.author-box {
  display: flex;
  gap: 20px;
  margin-top: 56px;
  padding: 26px;
  border: 1px solid var(--line);
}

.author-avatar {
  flex: none;
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--amarelo);
  color: #000;
  font-size: 22px;
  font-weight: 600;
}

.author-box .eyebrow {
  display: block;
  color: var(--muted);
  margin-bottom: 4px;
}

.author-box strong {
  display: block;
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
}

.author-box p {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--muted);
}

/* Calculadoras */
.calc {
  margin: 34px 0 40px;
  padding: 28px;
  background: #0d0d0d;
  border: 1px solid var(--amarelo);
}

.calc h3 {
  margin-top: 0;
}

.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 18px 0 22px;
}

.calc label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: var(--muted);
}

.calc input {
  padding: 11px 12px;
  border: 1px solid var(--line);
  background: #000;
  color: #fff;
  font: inherit;
  font-size: 16px;
}

.calc input:focus {
  outline: none;
  border-color: var(--amarelo);
}

.calc-result {
  padding: 18px 20px;
  background: var(--amarelo);
  color: #000;
  font-size: 17px;
  font-weight: 500;
  line-height: 1.5;
}

.calc-result strong {
  font-size: 22px;
  font-weight: 600;
}

@media (max-width: 767px) {
  .calc-grid { grid-template-columns: 1fr; }
  .author-box { flex-direction: column; }
  .tldr p { font-size: 17px; }
}