/* ─── ArticlePage — Editorial Stark B&W (The Economist + Palantir hybrid) ─── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Lora:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&family=Noto+Serif:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&display=swap');

/* ── Design tokens ── */
:root {
  --bg:          #FFFFFF;   /* Stark white background */
  --bg-alt:      #FAFAFA;   /* Stark paper off-white (minimal use) */
  --bg-subtle:   #EAEAEA;   /* Very light fallback accent */
  --ink:         #000000;   /* Stark black text */
  --ink-muted:   #111111;   /* Stark dark body copy */
  --ink-faint:   #444444;   /* High-density metadata gray */
  --border:      #000000;   /* Stark black dividers and borders */
  --border-soft: #222222;

  /* Semantic Grayscale Signals */
  --blue:        #000000;
  --blue-light:  #FFFFFF;
  --green:       #000000;
  --green-light: #FFFFFF;
  --amber:       #000000;
  --amber-light: #FFFFFF;

  --radius-sm:   0px;       /* Stark square corners - militaristic engineering */
  --radius:      0px;       /* Zero rounded corners */
  --max-w:       1200px;
  --font-serif:  'Publico Headline', 'Publico', 'Lora', Georgia, serif;
  --font-sans:   'Graphik', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body:   'Noto Serif', Georgia, serif;
}

/* ── Reset ── */
*, *::before, *::after { 
  box-sizing: border-box; 
  border-radius: 0px !important; /* Force zero rounded corners everywhere */
  transition: none !important;    /* Strip all transitions/animations */
  box-shadow: none !important;    /* Strip all shadows */
}

.art-root {
  min-height: 100vh;
  background: var(--bg);
  font-family: var(--font-sans);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}

/* ── Header & Navigation ── */
.art-header {
  border-bottom: 2px solid var(--border);
  background: #FFFFFF;
  position: sticky;
  top: 0;
  z-index: 100;
}

.art-header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0.85rem 2rem;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.art-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.art-breadcrumb {
  font-size: 0.78rem;
  color: var(--ink-faint);
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: center;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.art-breadcrumb a {
  color: var(--ink-faint);
  text-decoration: none;
}

.art-breadcrumb a:hover {
  color: var(--ink);
  text-decoration: underline;
}

.art-breadcrumb-cluster {
  font-weight: 800;
}

.art-breadcrumb-current {
  color: var(--ink);
  font-weight: 800;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 250px;
}

/* ── Layout Container ── */
.art-container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 3rem 2rem 5rem;
  display: flex;
  gap: 3.5rem;
  align-items: flex-start;
  position: relative;
}

/* ── Sticky Sidebar Table of Contents (Stark) ── */
.art-sidebar {
  width: 240px;
  flex-shrink: 0;
  position: sticky;
  top: 100px;
}

.art-sidebar-sticky {
  max-height: calc(100vh - 140px);
  overflow-y: auto;
  padding-right: 1rem;
}

.art-sidebar-title {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  margin-bottom: 1rem;
  display: block;
}

.art-sidebar-list {
  list-style: none;
  padding: 0;
  margin: 0;
  border-left: 1px solid var(--border);
}

.art-sidebar-item {
  margin: 0;
}

.art-sidebar-link {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--ink-faint);
  text-decoration: none;
  display: block;
  padding: 0.45rem 0 0.45rem 1rem;
  margin-left: -1px;
  border-left: 1px solid transparent;
  line-height: 1.4;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  font-weight: 700;
}

.art-sidebar-link:hover {
  color: var(--ink);
  border-left-color: var(--ink-faint);
}

.art-sidebar-link.active {
  color: var(--ink);
  font-weight: 800;
  border-left-color: var(--border);
}

/* ── Main Content Column ── */
.art-main-content {
  flex: 1;
  min-width: 0;
}

.art-content {
  max-width: 740px;
  line-height: 1.75;
  font-size: 1.0625rem;
  font-family: var(--font-body);
}

/* ── Headings (Lora/Publico Serif) ── */
.art-content h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4.5vw, 2.6rem);
  font-weight: 700;
  color: var(--ink);
  line-height: 1.2;
  letter-spacing: -0.015em;
  margin: 0 0 1.75rem;
  border-bottom: 2px solid var(--border);
  padding-bottom: 1.5rem;
}

.art-content h2 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--ink);
  margin: 3.5rem 0 1.25rem;
  letter-spacing: -0.015em;
  line-height: 1.3;
}

.art-content h3 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ink);
  margin: 2.5rem 0 1rem;
  letter-spacing: -0.01em;
  line-height: 1.4;
}

.art-content p {
  margin: 0 0 1.5rem;
  color: var(--ink-muted);
}

.art-content a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--ink);
  text-underline-offset: 3px;
  font-weight: 700;
}

.art-content a:hover {
  color: var(--ink-faint);
}

/* ── Stark Editorial Aside (Dado Verificado) ── */
.art-content .dado-verificado,
.art-content aside.dado-verificado {
  background: var(--bg);
  border: 1px solid var(--border);
  border-left: 6px solid var(--ink);
  padding: 1.5rem 1.75rem;
  margin: 2.5rem 0;
  font-size: 0.925rem;
}

.art-content .dado-verificado strong {
  display: block;
  color: var(--ink);
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
}

.art-content .dado-verificado p {
  color: var(--ink-muted);
  margin: 0.5rem 0;
  line-height: 1.65;
}

.art-content .dado-verificado footer {
  margin-top: 1rem;
  font-size: 0.8rem;
  color: var(--ink-faint);
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 800;
}

.art-content .dado-verificado cite {
  font-style: normal;
  font-weight: 800;
  color: var(--ink);
}

/* ── Minimalist Stark Technical Tables ── */
.art-content table,
.art-content .specs-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  margin: 2.25rem 0;
  border: 1px solid var(--border);
  background: #FFFFFF;
}

.art-content caption {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ink);
  text-align: left;
  padding: 0.5rem 0;
  margin-bottom: 0.5rem;
  caption-side: top;
}

.art-content th {
  background: var(--bg-alt);
  padding: 0.85rem 1rem;
  text-align: left;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 800;
  color: var(--ink);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-bottom: 2px solid var(--border);
}

.art-content td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--ink-muted);
  vertical-align: top;
  line-height: 1.6;
  font-family: var(--font-sans);
}

.art-content tr:last-child td {
  border-bottom: none;
}

.art-content tr:hover td {
  background: var(--bg-alt);
}

/* ── FAQ Section (Definition Lists) ── */
.art-content .faq-section {
  margin: 4rem 0;
}

.art-content .faq-section h2 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 1.75rem;
  text-transform: uppercase;
}

.art-content .faq-item {
  border: 1px solid var(--border);
  padding: 1.5rem;
  margin-bottom: 1rem;
  background: #FFFFFF;
}

.art-content .faq-item dt {
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--ink);
  font-size: 1.05rem;
  margin-bottom: 0.6rem;
  line-height: 1.4;
}

.art-content .faq-item dd {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.9rem;
  line-height: 1.65;
  font-family: var(--font-sans);
}

/* ── Conclusion styling ── */
.art-content .conclusao,
.art-content section:last-of-type > p:last-child {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--ink);
  font-weight: 500;
}

/* ── In-article bullet lists ── */
.art-content ul,
.art-content ol {
  padding-left: 1.5rem;
  margin-bottom: 1.5rem;
}

.art-content ul li,
.art-content ol li {
  margin-bottom: 0.5rem;
  color: var(--ink-muted);
}

/* ── Separators ── */
.art-content hr {
  border: none;
  border-top: 2px solid var(--border);
  margin: 3rem 0;
}

/* ── Stark Editorial Footer ── */
.art-footer {
  border-top: 2px solid var(--border);
  padding: 2.5rem 2rem;
  background: var(--bg);
}

.art-footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.art-back {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--ink);
  font-weight: 800;
  text-decoration: underline;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.art-back:hover {
  color: var(--ink-faint);
}

.art-score {
  font-size: 0.8rem;
  color: var(--ink-faint);
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 800;
}

.art-score strong {
  color: var(--ink);
  font-weight: 800;
}

/* ── Loading / Not found ── */
.art-loading {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  color: var(--ink);
  background: var(--bg);
}

.art-spinner {
  width: 32px;
  height: 32px;
  border: 4px solid var(--bg-subtle);
  border-top-color: var(--ink);
  animation: art-spin 0.8s linear infinite;
}

@keyframes art-spin { to { transform: rotate(360deg); } }

.art-notfound {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  text-align: center;
  padding: 2rem;
  color: var(--ink);
  background: var(--bg);
}

.art-notfound h1 {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 700;
  margin: 0;
  color: var(--ink);
}
.art-notfound p {
  color: var(--ink-muted);
  margin: 0;
}
.art-notfound a {
  color: var(--ink);
  font-size: 0.9rem;
  margin-top: 0.5rem;
  font-weight: 800;
  text-decoration: underline;
}

/* ── Hide frontmatter metadata ── */
.art-content pre:first-child,
.art-content code:first-child {
  display: none;
}

/* ── "Leia também" link styles ── */
.art-content .leia-tambem-link {
  color: var(--ink);
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--ink);
}

.art-content .leia-tambem-link:hover {
  color: var(--ink-faint);
}

/* ── Responsive Layout ── */
@media (max-width: 992px) {
  .art-container {
    gap: 2rem;
  }
  .art-sidebar {
    width: 200px;
  }
}

@media (max-width: 768px) {
  .art-header-inner {
    padding: 0.75rem 1.25rem;
    gap: 1rem;
    flex-direction: column;
    align-items: flex-start;
  }
  .art-breadcrumb-current {
    max-width: 150px;
  }
  .art-container {
    flex-direction: column;
    padding: 1.5rem 1.25rem 4rem;
    gap: 2rem;
  }
  .art-sidebar {
    display: none;
  }
  .art-content h1 {
    font-size: 1.8rem;
    padding-bottom: 1rem;
  }
  .art-content h2 {
    margin: 2.5rem 0 1rem;
    font-size: 1.25rem;
  }
  .art-footer {
    padding: 1.5rem 1.25rem;
  }
  .art-content table {
    font-size: 0.78rem;
  }
}