/* ============ BLOG PAGES — IR Engenharia ============ */

/* Landing hero */
.blog-hero {
  padding: clamp(120px, 14vw, 180px) 0 clamp(50px, 7vw, 90px);
  border-bottom: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}
.blog-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(229,168,44,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(229,168,44,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at 80% 30%, black 0%, transparent 65%);
  -webkit-mask-image: radial-gradient(ellipse at 80% 30%, black 0%, transparent 65%);
  pointer-events: none;
}
.blog-hero-inner {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 56px;
  align-items: end;
  position: relative;
}
@media (max-width: 980px) { .blog-hero-inner { grid-template-columns: 1fr; gap: 36px; } }

.blog-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(46px, 6.2vw, 88px);
  line-height: 0.96;
  letter-spacing: -0.015em;
  margin: 26px 0 22px;
  text-wrap: balance;
}
.blog-hero h1 .gold { color: var(--gold); }
.blog-hero p.sub {
  font-size: clamp(16px, 1.4vw, 19px);
  color: var(--ink-mute);
  line-height: 1.6;
  max-width: 620px;
  margin: 0 0 30px;
}
.blog-hero p.sub strong { color: var(--ink); }
.blog-hero-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}
.bht, .bht-mute {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  padding: 6px 12px;
  border: 1px solid var(--line-2);
  text-transform: uppercase;
}
.bht { background: var(--gold); color: #0a0a0a; border-color: var(--gold); font-family: var(--font-display); font-weight: 700; letter-spacing: 0; text-transform: none; font-size: 13px; padding: 4px 12px; }
.bht-mute { color: var(--ink-mute); }

.blog-hero-meta {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(0,0,0,0.4));
  padding: 28px;
  position: relative;
}
.blog-hero-meta::before, .blog-hero-meta::after {
  content: ""; position: absolute;
  width: 24px; height: 24px;
}
.blog-hero-meta::before { top: -1px; left: -1px; border-top: 1px solid var(--gold); border-left: 1px solid var(--gold); }
.blog-hero-meta::after { bottom: -1px; right: -1px; border-bottom: 1px solid var(--gold); border-right: 1px solid var(--gold); }
.bhm-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--gold);
  text-transform: uppercase;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.blog-hero-meta h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 22px;
  margin: 12px 0 16px;
  text-transform: uppercase;
}
.bhm-list {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: bhm;
  border-top: 1px solid var(--line);
}
.bhm-list li {
  counter-increment: bhm;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  position: relative;
  padding-left: 38px;
  font-size: 14px;
}
.bhm-list li::before {
  content: "0" counter(bhm);
  position: absolute;
  left: 0;
  top: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--gold);
}
.bhm-list a { color: var(--ink); transition: color 0.18s; }
.bhm-list a:hover { color: var(--gold); }
.bhm-note {
  margin: 18px 0 0;
  font-size: 12.5px;
  color: var(--ink-dim);
  line-height: 1.55;
}

/* Card list */
.blog-list { padding: clamp(60px, 8vw, 110px) 0; }
.blog-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
@media (max-width: 820px) { .blog-cards { grid-template-columns: 1fr; } }
.blog-card {
  background: var(--bg);
  transition: background 0.18s;
}
.blog-card:hover { background: var(--bg-1); }
.blog-card.featured { grid-column: span 2; }
@media (max-width: 820px) { .blog-card.featured { grid-column: span 1; } }

.blog-card a {
  display: grid;
  grid-template-columns: 1fr;
  height: 100%;
  text-decoration: none;
  color: inherit;
}
.blog-card.featured a {
  grid-template-columns: 1.2fr 1fr;
}
@media (max-width: 820px) {
  .blog-card.featured a { grid-template-columns: 1fr; }
}

.bc-media {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--bg-1);
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.blog-card.featured .bc-media {
  border-bottom: 0;
  border-right: 1px solid var(--line);
  aspect-ratio: auto;
  min-height: 320px;
}
@media (max-width: 820px) {
  .blog-card.featured .bc-media {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    aspect-ratio: 16 / 9;
    min-height: 0;
  }
}
.bc-svg svg { width: 100%; height: 100%; display: block; }
.bc-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 5px 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--gold);
  background: rgba(0,0,0,0.6);
  border: 1px solid var(--line-2);
  text-transform: uppercase;
}

.bc-body {
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  justify-content: space-between;
}
.bc-meta {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--ink-dim);
  text-transform: uppercase;
}
.bc-meta > span { white-space: nowrap; }
.bc-body h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 2.4vw, 32px);
  line-height: 1.1;
  margin: 0;
  text-transform: none;
  letter-spacing: -0.005em;
}
.bc-body h2 .gold { color: var(--gold); }
.bc-body p {
  color: var(--ink-mute);
  font-size: 14.5px;
  line-height: 1.6;
  margin: 0;
}
.bc-cta {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold);
  margin-top: 12px;
}

/* Blog CTA */
.blog-cta {
  padding: clamp(70px, 9vw, 110px) 0;
  border-top: 1px solid var(--line);
  background: var(--bg-1);
}
.bcta-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: end;
}
@media (max-width: 880px) { .bcta-inner { grid-template-columns: 1fr; } }
.blog-cta h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(30px, 3.8vw, 50px);
  line-height: 1.04;
  letter-spacing: -0.01em;
  margin: 14px 0 18px;
  text-wrap: balance;
}
.blog-cta h2 .gold { color: var(--gold); }
.blog-cta p {
  color: var(--ink-mute);
  font-size: 16px;
  line-height: 1.6;
  margin: 0;
  max-width: 600px;
}
.bcta-buttons {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
@media (max-width: 880px) { .bcta-buttons { flex-direction: row; flex-wrap: wrap; } }

/* ============ ARTICLE LAYOUT ============ */
.article-hero {
  padding: clamp(110px, 13vw, 170px) 0 clamp(40px, 6vw, 80px);
  border-bottom: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}
.article-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(229,168,44,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(229,168,44,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at 80% 30%, black 0%, transparent 65%);
  -webkit-mask-image: radial-gradient(ellipse at 80% 30%, black 0%, transparent 65%);
  pointer-events: none;
}
.article-hero .wrap { position: relative; max-width: 980px; }
.article-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--gold);
  text-transform: uppercase;
  display: inline-flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 24px;
}
.article-eyebrow::before { content: ""; width: 32px; height: 1px; background: var(--gold); }
.article-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(36px, 5.2vw, 72px);
  line-height: 0.98;
  letter-spacing: -0.015em;
  margin: 0 0 28px;
  text-wrap: balance;
}
.article-hero h1 .gold { color: var(--gold); }
.article-lead {
  font-size: clamp(16px, 1.4vw, 19px);
  color: var(--ink-mute);
  line-height: 1.65;
  margin: 0 0 32px;
  max-width: 760px;
}
.article-lead strong { color: var(--ink); }
.article-meta {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  padding: 18px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ink-mute);
  text-transform: uppercase;
}
.article-meta strong { color: var(--gold); margin-right: 6px; }

/* TOC */
.article-toc {
  background: var(--bg-1);
  border: 1px solid var(--line);
  padding: 28px;
  margin: 40px 0;
}
.article-toc .toc-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.article-toc ol {
  list-style: none;
  counter-reset: toc;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
}
@media (max-width: 720px) { .article-toc ol { grid-template-columns: 1fr; } }
.article-toc ol li {
  counter-increment: toc;
  border-bottom: 1px solid var(--line);
  position: relative;
}
.article-toc ol li:nth-child(odd) { border-right: 1px solid var(--line); }
@media (max-width: 720px) { .article-toc ol li:nth-child(odd) { border-right: 0; } }
.article-toc ol li a {
  display: block;
  padding: 13px 14px 13px 50px;
  color: var(--ink-mute);
  font-size: 14px;
  transition: color 0.18s, background 0.18s;
  position: relative;
}
.article-toc ol li a::before {
  content: counter(toc, decimal-leading-zero);
  position: absolute;
  left: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gold);
  letter-spacing: 0.1em;
}
.article-toc ol li a:hover {
  color: var(--gold);
  background: rgba(229,168,44,0.04);
}

/* Article body */
.article-body {
  padding: clamp(40px, 6vw, 80px) 0;
}
.article-body .wrap { max-width: 820px; }
.article-section {
  padding: 36px 0;
  border-bottom: 1px solid var(--line);
}
.article-section:last-child { border-bottom: 0; }
.article-section h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 2.8vw, 34px);
  line-height: 1.15;
  letter-spacing: -0.005em;
  margin: 0 0 22px;
  text-wrap: balance;
  display: flex;
  align-items: baseline;
  gap: 18px;
}
.article-section h2::before {
  content: attr(data-num);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--gold);
  flex-shrink: 0;
}
.article-section h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
  margin: 22px 0 10px;
  color: var(--ink);
  letter-spacing: 0;
  text-transform: none;
}
.article-section p {
  color: var(--ink-mute);
  font-size: 16px;
  line-height: 1.75;
  margin: 0 0 16px;
}
.article-section p strong { color: var(--ink); font-weight: 600; }
.article-section ul, .article-section ol {
  padding-left: 0;
  list-style: none;
  margin: 12px 0 22px;
}
.article-section ul li {
  position: relative;
  padding: 8px 0 8px 26px;
  color: var(--ink-mute);
  font-size: 15.5px;
  line-height: 1.65;
  border-bottom: 1px dotted var(--line);
}
.article-section ul li:last-child { border-bottom: 0; }
.article-section ul li::before {
  content: "→";
  position: absolute;
  left: 0;
  top: 8px;
  color: var(--gold);
  font-family: var(--font-mono);
  font-weight: 600;
}
.article-section ol {
  counter-reset: alist;
}
.article-section ol li {
  counter-increment: alist;
  position: relative;
  padding: 8px 0 8px 36px;
  color: var(--ink-mute);
  font-size: 15.5px;
  line-height: 1.65;
}
.article-section ol li::before {
  content: counter(alist, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 8px;
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
}
.article-section .callout {
  background: var(--bg-1);
  border-left: 2px solid var(--gold);
  padding: 18px 22px;
  margin: 22px 0;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--ink-mute);
}
.article-section .callout strong { color: var(--gold); display: block; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; margin-bottom: 8px; }
.article-section .keyfact {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--line);
  margin: 22px 0;
}
@media (max-width: 600px) { .article-section .keyfact { grid-template-columns: 1fr; } }
.article-section .keyfact > div {
  padding: 18px 22px;
  border-right: 1px solid var(--line);
}
.article-section .keyfact > div:last-child { border-right: 0; }
@media (max-width: 600px) {
  .article-section .keyfact > div { border-right: 0; border-bottom: 1px solid var(--line); }
  .article-section .keyfact > div:last-child { border-bottom: 0; }
}
.article-section .keyfact .label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.article-section .keyfact .value {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  color: var(--ink);
  letter-spacing: -0.005em;
}

/* Article media (image / svg / video) */
.article-media {
  margin: 26px 0;
  position: relative;
  background: var(--bg-1);
  border: 1px solid var(--line);
}
.article-media svg, .article-media img { display: block; width: 100%; height: auto; }
.article-media figcaption {
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--ink-dim);
  text-transform: uppercase;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 6px;
}
.article-media figcaption .credit { color: var(--gold); }

/* Author block */
.article-author {
  margin: 50px 0 20px;
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 22px;
  align-items: center;
  padding: 24px;
  border: 1px solid var(--line);
}
@media (max-width: 600px) { .article-author { grid-template-columns: 1fr; text-align: left; } }
.article-author .av {
  width: 80px; height: 80px;
  border: 1px solid var(--gold);
  overflow: hidden;
  position: relative;
}
.article-author .av img { width: 100%; height: 100%; object-fit: cover; object-position: center 22%; }
.article-author h4 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  color: var(--ink);
  margin: 0 0 4px;
}
.article-author p {
  font-size: 13.5px;
  color: var(--ink-mute);
  line-height: 1.55;
  margin: 0;
}

/* Article CTA mid-article */
.article-cta-inline {
  margin: 36px 0;
  padding: 28px;
  background: linear-gradient(180deg, rgba(229,168,44,0.06), transparent);
  border: 1px solid rgba(229,168,44,0.4);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.article-cta-inline .txt {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
  color: var(--ink);
  max-width: 480px;
  line-height: 1.3;
  margin: 0;
}
.article-cta-inline .txt span { color: var(--gold); }

/* Related posts */
.related-posts {
  padding: clamp(60px, 8vw, 100px) 0;
  border-top: 1px solid var(--line);
  background: var(--bg-1);
}
.related-posts h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 3vw, 36px);
  letter-spacing: -0.005em;
  margin: 0 0 30px;
  text-transform: none;
}
.related-posts h3 .gold { color: var(--gold); }
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
@media (max-width: 880px) { .related-grid { grid-template-columns: 1fr; } }
.related-card {
  background: var(--bg);
  padding: 22px;
  transition: background 0.18s;
  display: block;
  color: inherit;
  text-decoration: none;
}
.related-card:hover { background: var(--bg-1); }
.related-card .tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--gold);
  text-transform: uppercase;
}
.related-card h4 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  margin: 8px 0 6px;
  color: var(--ink);
  line-height: 1.2;
  text-transform: none;
}
.related-card p {
  font-size: 13.5px;
  color: var(--ink-mute);
  margin: 0;
  line-height: 1.55;
}