/* Índice — databr.digital | research-publication, navy + paper + data-blue */
:root {
  --navy: #0f2347;
  --navy-mid: #1a3560;
  --navy-light: #2a4a7a;
  --paper: #faf9f6;
  --paper-dark: #edeae3;
  --data-blue: #2b6cb0;
  --data-blue-light: #4a90d9;
  --ink: #1a2332;
  --ink-muted: #4a5568;
  --border: #c5cdd8;
  --stat-bg: #e8f0fa;
  --radius: 2px;
  --font-serif: "Georgia", "Times New Roman", Times, serif;
  --font-sans: "Helvetica Neue", Arial, "Segoe UI", sans-serif;
  --font-mono: "SF Mono", "Consolas", monospace;
  --max-width: 1180px;
  --line: 1.75;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 100%; scroll-behavior: smooth; }
body {
  font-family: var(--font-serif);
  background: var(--paper);
  color: var(--ink);
  line-height: var(--line);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
img, svg { max-width: 100%; height: auto; display: block; }
a { color: var(--data-blue); text-decoration: underline; text-underline-offset: 3px; }
a:hover { color: var(--navy); }

/* Split navigation header */
.split-header {
  background: var(--paper);
  border-bottom: 3px double var(--navy);
  position: sticky;
  top: 0;
  z-index: 100;
}
.split-header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.6rem 1.25rem;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
}
.split-nav-left, .split-nav-right {
  display: flex;
  gap: 1.25rem;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.split-nav-left { justify-content: flex-end; }
.split-nav-right { justify-content: flex-start; }
.split-nav-left a, .split-nav-right a {
  color: var(--navy);
  text-decoration: none;
}
.split-nav-left a:hover, .split-nav-right a:hover,
.split-nav-left a[aria-current="page"], .split-nav-right a[aria-current="page"] {
  color: var(--data-blue);
}
.site-logo {
  text-align: center;
  text-decoration: none;
  color: var(--navy);
}
.site-logo strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.85rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
}
.site-logo span {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-top: 0.15rem;
}
.header-meta {
  background: var(--navy);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 0.7rem;
  padding: 0.35rem 1rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.header-meta a { color: var(--paper); }

.menu-toggle {
  display: none;
  background: var(--navy);
  color: var(--paper);
  border: none;
  padding: 0.5rem 0.85rem;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 1.25rem; }
main { flex: 1; padding: 2rem 0 3rem; }

/* Editorial columns homepage */
.editorial-columns {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}
.col-featured { grid-column: 1; }
.col-mid, .col-side { display: flex; flex-direction: column; gap: 1rem; }

.hero-image {
  width: 100%;
  border: 1px solid var(--border);
  margin-bottom: 0.75rem;
}
.hero-label {
  font-family: var(--font-sans);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--data-blue);
  font-weight: 700;
  margin-bottom: 0.4rem;
}
.col-featured h1 {
  font-size: 1.65rem;
  line-height: 1.25;
  margin-bottom: 0.6rem;
}
.col-featured h1 a { color: var(--ink); text-decoration: none; }
.col-featured h1 a:hover { color: var(--data-blue); }
.hero-excerpt { font-size: 0.95rem; color: var(--ink-muted); margin-bottom: 0.5rem; }
.hero-meta {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: var(--ink-muted);
}

/* Bordered cards */
.bordered-card {
  border: 1px solid var(--border);
  padding: 1rem;
  background: var(--paper);
  transition: border-color 0.15s;
}
.bordered-card:hover { border-color: var(--data-blue); }
.bordered-card img { margin-bottom: 0.6rem; border: 1px solid var(--paper-dark); }
.story-category {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--data-blue);
  font-weight: 700;
}
.bordered-card h3 { font-size: 1rem; line-height: 1.35; margin: 0.35rem 0; }
.bordered-card h3 a { color: var(--ink); text-decoration: none; }
.bordered-card h3 a:hover { color: var(--data-blue); }
.story-excerpt { font-size: 0.85rem; color: var(--ink-muted); }
.story-meta {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  color: var(--ink-muted);
  margin-top: 0.4rem;
}

.section-title {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--navy);
  border-bottom: 2px solid var(--navy);
  padding-bottom: 0.35rem;
  margin-bottom: 1.25rem;
}

/* Inline stats */
.stat-inline {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 1.5rem 0;
  padding: 1rem;
  background: var(--stat-bg);
  border-left: 4px solid var(--data-blue);
}
.stat-item { flex: 1; min-width: 120px; }
.stat-value {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.2;
}
.stat-label {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Two column layout */
.two-col {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 2.5rem;
  align-items: start;
}
.sidebar-box {
  border: 1px solid var(--border);
  padding: 1.1rem;
  margin-bottom: 1.25rem;
  background: var(--paper);
}
.sidebar-box h2 {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--navy);
  margin-bottom: 0.75rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--border);
}
.sidebar-list { list-style: none; }
.sidebar-list li { padding: 0.4rem 0; border-bottom: 1px dotted var(--border); font-size: 0.88rem; }
.sidebar-list li:last-child { border-bottom: none; }
.sidebar-list a { text-decoration: none; color: var(--ink); }
.sidebar-list a:hover { color: var(--data-blue); }

.prose p { margin-bottom: 1rem; }
.prose h2 { font-size: 1.25rem; margin: 1.75rem 0 0.75rem; color: var(--navy); }
.prose h3 { font-size: 1.05rem; margin: 1.25rem 0 0.5rem; }
.lead { font-size: 1.1rem; color: var(--ink-muted); margin-bottom: 1.25rem; }

/* Article layout with sidebar */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 2.5rem;
  align-items: start;
}
.article-header { margin-bottom: 1.5rem; padding-bottom: 1rem; border-bottom: 1px solid var(--border); }
.article-header h1 { font-size: 1.85rem; line-height: 1.25; margin: 0.5rem 0; }
.article-meta-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  color: var(--ink-muted);
  margin-top: 0.75rem;
}
.author-link { display: flex; align-items: center; gap: 0.4rem; text-decoration: none; color: var(--ink); }
.author-avatar-sm { border-radius: 50%; border: 1px solid var(--border); }
.author-avatar-lg { border-radius: 50%; border: 2px solid var(--border); }
.article-thumb-full { margin: 1.25rem 0; border: 1px solid var(--border); }
.updated-note {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: var(--data-blue);
  font-style: italic;
  margin-top: 0.5rem;
}
.article-sidebar .sidebar-box h2 { font-size: 0.68rem; }
.methodology-list { list-style: none; font-size: 0.85rem; }
.methodology-list li { padding: 0.35rem 0; border-bottom: 1px dotted var(--border); }
.methodology-list li:last-child { border-bottom: none; }

/* Articles listing + filter */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}
.filter-btn {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--border);
  background: var(--paper);
  color: var(--navy);
  cursor: pointer;
}
.filter-btn:hover, .filter-btn.active {
  background: var(--navy);
  color: var(--paper);
  border-color: var(--navy);
}
.articles-grid { display: flex; flex-direction: column; gap: 1.25rem; }
.article-list-card {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 1.25rem;
  border: 1px solid var(--border);
  padding: 1rem;
}
.article-list-card img { border: 1px solid var(--paper-dark); }

/* Author profile */
.author-profile {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  padding: 1.5rem;
  border: 1px solid var(--border);
  margin-bottom: 2rem;
}
.author-profile h1 { font-size: 1.75rem; margin-bottom: 0.35rem; }

.page-header { margin-bottom: 2rem; }
.page-header h1 { font-size: 2rem; color: var(--navy); margin-bottom: 0.5rem; }

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 1.5rem;
}
.contact-form label {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
  margin-top: 0.75rem;
}
.contact-form input, .contact-form select, .contact-form textarea {
  width: 100%;
  padding: 0.55rem;
  border: 1px solid var(--border);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  background: var(--paper);
}
.contact-form textarea { min-height: 120px; resize: vertical; }
.contact-form button {
  margin-top: 1rem;
  padding: 0.6rem 1.5rem;
  background: var(--navy);
  color: var(--paper);
  border: none;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  cursor: pointer;
}
.contact-form button:hover { background: var(--data-blue); }

/* Footer */
.site-footer {
  background: var(--navy);
  color: var(--paper);
  padding: 2rem 0 1.25rem;
  margin-top: auto;
  font-family: var(--font-sans);
  font-size: 0.82rem;
}
.site-footer a { color: var(--data-blue-light); }
.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}
.footer-grid h3 {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.6rem;
  color: var(--paper-dark);
}
.footer-bottom {
  border-top: 1px solid var(--navy-light);
  padding-top: 1rem;
  font-size: 0.75rem;
  opacity: 0.8;
}

/* Cookie notice */
.cookie-notice {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--navy);
  color: var(--paper);
  padding: 1rem 1.25rem;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  display: none;
  z-index: 200;
  box-shadow: 0 -4px 20px rgba(0,0,0,0.15);
}
.cookie-notice.is-visible { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem; }
.cookie-notice a { color: var(--data-blue-light); }
.cookie-notice button {
  background: var(--data-blue);
  color: var(--paper);
  border: none;
  padding: 0.5rem 1.25rem;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  cursor: pointer;
  white-space: nowrap;
}

@media (max-width: 900px) {
  .editorial-columns { grid-template-columns: 1fr; }
  .two-col, .article-layout, .contact-grid, .footer-grid { grid-template-columns: 1fr; }
  .article-list-card { grid-template-columns: 1fr; }
  .split-header-inner { grid-template-columns: 1fr; text-align: center; }
  .split-nav-left, .split-nav-right { display: none; }
  .split-nav-left.is-open, .split-nav-right.is-open {
    display: flex;
    flex-direction: column;
    grid-column: 1 / -1;
    justify-content: center;
    padding: 0.5rem 0;
  }
  .menu-toggle { display: block; justify-self: end; grid-column: 1; grid-row: 1; }
  .site-logo { grid-column: 1; grid-row: 1; }
}