/* Blog Traceable — alinhado ao UI guideline do app (clean UI) */
:root {
  --bg: #f0f2f5;
  --ink: #111827;
  --muted: #6b7280;
  --body: #374151;
  --border: #e5e7eb;
  --border-soft: #f3f4f6;
  --surface: #ffffff;
  --accent: #2563eb;
  --thead: #f9fafb;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.blog-shell { min-height: 100vh; display: flex; flex-direction: column; }

.blog-top {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.blog-top-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.blog-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  text-decoration: none;
}
.blog-brand:hover { text-decoration: none; }
.blog-brand img { height: 28px; width: auto; display: block; }
.blog-brand-sep { width: 1px; height: 18px; background: var(--border); }
.blog-brand span { font-size: 0.875rem; font-weight: 600; color: var(--ink); }

.blog-top-actions { display: flex; align-items: center; gap: 10px; }

.blog-search {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--thead);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0 12px;
  height: 36px;
  min-width: 220px;
}
.blog-search input {
  border: 0;
  background: transparent;
  font: inherit;
  font-size: 0.875rem;
  color: var(--ink);
  width: 100%;
  outline: none;
}
.blog-search svg { width: 15px; height: 15px; color: var(--muted); flex-shrink: 0; }

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 36px;
  padding: 0 16px;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 0.875rem;
  font-weight: 600;
  border: 0;
  text-decoration: none;
}
.btn-primary:hover { filter: brightness(0.95); text-decoration: none; color: #fff; }

.btn-light {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 36px;
  padding: 0 12px;
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font-size: 0.875rem;
  font-weight: 500;
  border: 1px solid var(--border);
  text-decoration: none;
}
.btn-light:hover { background: var(--thead); text-decoration: none; }

.blog-main {
  flex: 1;
  max-width: 1080px;
  margin: 0 auto;
  padding: 28px 24px 48px;
  width: 100%;
}

.page-header-clean {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.page-title h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--ink);
  margin: 0;
  letter-spacing: -0.01em;
}
.page-title p {
  color: var(--muted);
  margin: 4px 0 0;
  font-size: 0.9rem;
}

.clean-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.clean-toolbar {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  background: #fff;
}

.tab-btn {
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
}
.tab-btn:hover { color: #374151; background: var(--thead); }
.tab-btn.active { color: var(--accent); background: #eff6ff; font-weight: 600; }

.layout-2 {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 20px;
  align-items: start;
}
@media (max-width: 900px) {
  .layout-2 { grid-template-columns: 1fr; }
  .blog-search { min-width: 0; width: 160px; }
}

.post-row {
  display: block;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-soft);
  color: inherit;
  text-decoration: none;
}
.post-row:last-child { border-bottom: 0; }
.post-row:hover { background: var(--thead); text-decoration: none; }
.post-row.is-hidden { display: none; }

.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  align-items: center;
  font-size: 0.75rem;
  color: var(--muted);
  margin-bottom: 6px;
}
.post-cat {
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--accent);
}
.post-row h2 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.35;
}
.post-row p {
  margin: 8px 0 0;
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.55;
}

.side-card { padding: 18px 20px; }
.side-card h3 {
  margin: 0 0 14px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
}
.side-list { list-style: none; margin: 0; padding: 0; }
.side-list li { padding: 12px 0; border-top: 1px solid var(--border-soft); }
.side-list li:first-child { border-top: 0; padding-top: 0; }
.side-list a {
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 600;
  line-height: 1.35;
  text-decoration: none;
}
.side-list a:hover { color: var(--accent); }
.side-list time { display: block; margin-top: 4px; font-size: 0.75rem; color: var(--muted); font-weight: 400; }

.side-cta {
  margin-top: 16px;
  padding: 16px;
  background: var(--thead);
  border: 1px solid var(--border);
  border-radius: 10px;
}
.side-cta p { margin: 0 0 12px; font-size: 0.875rem; color: var(--body); }

.blog-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
  padding: 20px 24px;
  margin-top: auto;
}
.blog-footer-inner {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 0.8rem;
  color: var(--muted);
}
.blog-footer a { color: var(--muted); }
.blog-footer a:hover { color: var(--ink); }

.search-empty {
  display: none;
  padding: 40px 24px;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}
.search-empty.show { display: block; }

/* Article */
.article-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 20px;
  align-items: start;
}
@media (max-width: 900px) {
  .article-grid { grid-template-columns: 1fr; }
}

.article-card { padding: 28px 32px 36px; }
@media (max-width: 640px) {
  .article-card { padding: 20px 18px 28px; }
  .blog-main { padding: 20px 16px 40px; }
  .blog-top-inner { padding: 0 16px; }
}

.article-kicker {
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 10px;
}
.article-kicker a { color: var(--muted); }
.article-card h1 {
  margin: 0;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.25;
  letter-spacing: -0.02em;
}
.article-byline {
  margin-top: 14px;
  font-size: 0.875rem;
  color: var(--muted);
}
.article-byline strong { color: var(--ink); font-weight: 600; }

.article-lede {
  margin: 20px 0 0;
  font-size: 1.05rem;
  color: var(--body);
  line-height: 1.65;
}

.prose { margin-top: 28px; font-size: 1rem; color: var(--body); }
.prose h2 {
  margin: 2rem 0 0.65rem;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ink);
}
.prose p { margin: 0 0 1rem; line-height: 1.7; }
.prose ul { margin: 0 0 1.1rem; padding-left: 1.2rem; }
.prose li { margin: 0.35rem 0; line-height: 1.6; }
.prose strong { color: var(--ink); }
.prose a { font-weight: 500; }

.article-cta {
  margin-top: 32px;
  padding: 18px 20px;
  border-top: 1px solid var(--border-soft);
  background: var(--thead);
  border-radius: 0 0 var(--radius) var(--radius);
  margin-left: -32px;
  margin-right: -32px;
  margin-bottom: -36px;
  padding-left: 32px;
  padding-right: 32px;
  padding-bottom: 22px;
}
@media (max-width: 640px) {
  .article-cta {
    margin-left: -18px;
    margin-right: -18px;
    margin-bottom: -28px;
    padding-left: 18px;
    padding-right: 18px;
  }
}
.article-cta h2 { margin: 0 0 6px; font-size: 1rem; color: var(--ink); }
.article-cta p { margin: 0 0 14px; font-size: 0.875rem; color: var(--muted); }