/* DRE Brasil — research-publication editorial */
:root {
  --primary: #5C4033;
  --accent: #A67C52;
  --bg: #F5EDE4;
  --text: #2C1810;
  --muted: #8B7355;
  --border: rgba(92, 64, 51, 0.18);
  --space-xs: 12px;
  --space-sm: 24px;
  --space-md: 36px;
  --space-lg: 48px;
  --space-xl: 72px;
  --radius: 6px;
  --container: 1140px;
  --font-serif: Georgia, "Times New Roman", Times, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --line-height: 1.65;
  --transition: 0.2s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: var(--line-height);
  color: var(--text);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--primary);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--transition);
}

a:hover,
a:focus-visible {
  color: var(--accent);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.25;
  margin-top: 0;
  color: var(--primary);
}

h1 { font-size: clamp(2rem, 4vw, 2.75rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: var(--space-sm); }
h3 { font-size: 1.25rem; margin-bottom: var(--space-xs); }

p {
  margin: 0 0 var(--space-sm);
}

ul, ol {
  margin: 0 0 var(--space-sm);
  padding-left: 1.4rem;
}

li {
  margin-bottom: 0.5rem;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-sm);
}

/* Header — centered-logo */
.site-header {
  padding: var(--space-md) 0 var(--space-sm);
  border-bottom: 1px solid var(--border);
  text-align: center;
}

.site-logo {
  display: inline-block;
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--primary);
  text-decoration: none;
}

.site-logo:hover {
  color: var(--accent);
  text-decoration: none;
}

.site-tagline {
  margin: var(--space-xs) 0 0;
  font-size: 0.875rem;
  color: var(--muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* Nav — horizontal-underline */
.site-nav {
  margin-top: var(--space-sm);
}

.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-xs) var(--space-md);
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  display: inline-block;
  padding: var(--space-xs) 0;
  font-size: 0.9375rem;
  color: var(--text);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color var(--transition), color var(--transition);
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a[aria-current="page"] {
  color: var(--primary);
  border-bottom-color: var(--accent);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-xs) var(--space-sm);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  color: var(--primary);
  cursor: pointer;
}

/* Main */
main {
  padding: var(--space-lg) 0 var(--space-xl);
}

/* Hero — text-only-lead */
.hero-lead {
  max-width: 720px;
  margin: 0 auto var(--space-xl);
  text-align: center;
}

.hero-lead .tag {
  margin-bottom: var(--space-sm);
}

.hero-lead h1 {
  margin-bottom: var(--space-sm);
}

.hero-lead .lead {
  font-size: 1.1875rem;
  color: var(--muted);
  line-height: 1.7;
}

.hero-meta {
  margin-top: var(--space-md);
  font-size: 0.875rem;
  color: var(--muted);
}

/* Tags — bracket-label */
.tag {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}

.tag::before { content: "["; margin-right: 2px; }
.tag::after { content: "]"; margin-left: 2px; }

/* Grid — 8-col-asymmetric */
.grid-8 {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: var(--space-md);
}

.col-span-5 { grid-column: span 5; }
.col-span-4 { grid-column: span 4; }
.col-span-3 { grid-column: span 3; }
.col-span-2 { grid-column: span 2; }
.col-span-8 { grid-column: span 8; }

/* Cards — editorial-lines */
.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  overflow: hidden;
  transition: border-color var(--transition);
}

.card:hover {
  border-color: var(--accent);
}

.card-body {
  padding: var(--space-sm);
}

.card-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  margin: 0 0 var(--space-xs);
}

.card-title a {
  color: var(--primary);
  text-decoration: none;
}

.card-title a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.card-excerpt {
  font-size: 0.9375rem;
  color: var(--muted);
  margin: 0 0 var(--space-xs);
}

.card-meta {
  font-size: 0.8125rem;
  color: var(--muted);
}

/* Image — 3:2-editorial */
.img-editorial {
  aspect-ratio: 3 / 2;
  object-fit: cover;
  width: 100%;
  border-radius: var(--radius) var(--radius) 0 0;
}

/* Featured story */
.featured-story {
  margin-bottom: var(--space-xl);
}

.featured-story .grid-8 {
  align-items: start;
}

.featured-story h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.25rem);
}

.featured-story .excerpt {
  font-size: 1.0625rem;
  color: var(--muted);
}

/* Article list — magazine-columns */
.section-title {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid var(--border);
}

.magazine-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.magazine-columns .card:nth-child(1) {
  grid-column: span 2;
}

.feed-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.feed-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: var(--space-sm);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--border);
}

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

.feed-number {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--accent);
  line-height: 1;
}

.feed-item h3 {
  font-size: 1.0625rem;
  margin-bottom: 4px;
}

.feed-item h3 a {
  text-decoration: none;
  color: var(--primary);
}

.feed-item h3 a:hover {
  text-decoration: underline;
}

.feed-item p {
  font-size: 0.875rem;
  color: var(--muted);
  margin: 0;
}

/* Buttons — text-link-only */
.btn-link {
  display: inline-block;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 4px;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  font-family: var(--font-sans);
}

.btn-link:hover {
  color: var(--accent);
}

/* Article layout — sidebar-article */
.article-header {
  max-width: 720px;
  margin: 0 auto var(--space-lg);
}

.article-header h1 {
  margin-bottom: var(--space-sm);
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: var(--space-lg);
  align-items: start;
}

.article-content {
  max-width: 680px;
}

.article-content h2 {
  margin-top: var(--space-lg);
}

.article-content h2:first-of-type {
  margin-top: var(--space-md);
}

.article-content blockquote {
  margin: var(--space-md) 0;
  padding: var(--space-sm) var(--space-md);
  border-left: 3px solid var(--accent);
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-style: italic;
  color: var(--primary);
  background: rgba(166, 124, 82, 0.08);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.article-content figure {
  margin: var(--space-md) 0;
}

.article-content figcaption {
  font-size: 0.8125rem;
  color: var(--muted);
  margin-top: var(--space-xs);
}

.article-updated {
  font-size: 0.8125rem;
  color: var(--muted);
  margin-top: var(--space-xs);
}

/* Sidebar — sticky-toc */
.article-sidebar {
  position: relative;
}

.toc {
  position: sticky;
  top: var(--space-sm);
  padding: var(--space-sm);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
}

.toc-title {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 var(--space-xs);
}

.toc ol {
  margin: 0;
  padding-left: 1.2rem;
  font-size: 0.875rem;
}

.toc a {
  color: var(--text);
  text-decoration: none;
}

.toc a:hover,
.toc a.active {
  color: var(--accent);
  text-decoration: underline;
}

.related-articles {
  margin-top: var(--space-md);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--border);
}

.related-articles h4 {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 var(--space-xs);
}

.related-articles ul {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.875rem;
}

.related-articles li {
  margin-bottom: 0.5rem;
}

/* Author — footer-author-note */
.author-note {
  margin-top: var(--space-lg);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--border);
  display: flex;
  gap: var(--space-sm);
  align-items: flex-start;
}

.author-note img {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  flex-shrink: 0;
}

.author-note-text {
  font-size: 0.875rem;
  color: var(--muted);
}

.author-note-text strong {
  display: block;
  color: var(--primary);
  font-size: 0.9375rem;
  margin-bottom: 4px;
}

/* Page content */
.page-header {
  max-width: 720px;
  margin-bottom: var(--space-lg);
}

.page-header h1 {
  margin-bottom: var(--space-sm);
}

.page-content {
  max-width: 720px;
}

.page-content h2 {
  margin-top: var(--space-lg);
}

/* Articles listing */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.articles-grid .card:first-child {
  grid-column: span 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.articles-grid .card:first-child .img-editorial {
  border-radius: var(--radius) 0 0 var(--radius);
  height: 100%;
}

/* Contact */
.contact-block {
  padding: var(--space-md);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: var(--space-md);
}

.contact-block h2 {
  font-size: 1.125rem;
  margin-bottom: var(--space-xs);
}

/* Footer — editorial-masthead */
.site-footer {
  border-top: 2px solid var(--primary);
  padding: var(--space-lg) 0 var(--space-md);
  margin-top: var(--space-xl);
}

.masthead {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.masthead-logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
}

.masthead-logo:hover {
  color: var(--accent);
  text-decoration: none;
}

.masthead-tagline {
  font-size: 0.875rem;
  color: var(--muted);
  margin: var(--space-xs) 0 0;
  font-style: italic;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.footer-col h3 {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: var(--space-xs);
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.875rem;
}

.footer-col li {
  margin-bottom: 0.4rem;
}

.footer-col a {
  color: var(--text);
  text-decoration: none;
}

.footer-col a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-sm);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--border);
  font-size: 0.8125rem;
  color: var(--muted);
}

/* Cookie — inline-footer-note */
.cookie-note {
  font-size: 0.75rem;
  color: var(--muted);
  max-width: 480px;
  line-height: 1.5;
}

.cookie-note a {
  color: var(--accent);
}

/* Utility */
.section-spaced { margin-top: var(--space-xl); }
.text-center { text-align: center; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Responsive */
@media (max-width: 900px) {
  .grid-8,
  .col-span-5,
  .col-span-4,
  .col-span-3,
  .col-span-2 {
    grid-column: span 8;
  }

  .magazine-columns {
    grid-template-columns: 1fr;
  }

  .magazine-columns .card:nth-child(1) {
    grid-column: span 1;
  }

  .article-layout {
    grid-template-columns: 1fr;
  }

  .toc {
    position: static;
  }

  .articles-grid,
  .articles-grid .card:first-child {
    grid-template-columns: 1fr;
    grid-column: span 1;
    display: block;
  }

  .articles-grid .card:first-child .img-editorial {
    border-radius: var(--radius) var(--radius) 0 0;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .featured-story .grid-8 {
    gap: var(--space-sm);
  }
}

@media (max-width: 640px) {
  .nav-toggle {
    display: inline-block;
    margin-top: var(--space-sm);
  }

  .site-nav ul {
    display: none;
    flex-direction: column;
    gap: 0;
    margin-top: var(--space-xs);
  }

  .site-nav.is-open ul {
    display: flex;
  }

  .site-nav a {
    padding: var(--space-xs);
    border-bottom: none;
    border-left: 2px solid transparent;
  }

  .site-nav a[aria-current="page"],
  .site-nav a:hover {
    border-left-color: var(--accent);
    border-bottom-color: transparent;
  }

  .feed-item {
    grid-template-columns: 1fr;
  }

  .feed-number {
    display: none;
  }
}