/* ========================================================
   REVALIDA IA — Blog Stylesheet
   Premium SEO Blog Design
   ======================================================== */

:root {
  --blue: #0B66E4;
  --blue-light: #E8F0FE;
  --blue-dark: #0952B5;
  --ink: #1A1A2E;
  --ink-2: #4A4A6A;
  --muted: #8B8BA3;
  --bg: #FAFBFC;
  --white: #FFFFFF;
  --border: #E5E7EB;
  --green: #059669;
  --gold: #D97706;
  --red: #DC2626;
  --teal: #0D9488;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; }

/* ── Container ── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 780px; margin: 0 auto; padding: 0 24px; }

/* ── Navbar (shared with landing) ── */
.blog-navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: 64px;
}
.blog-navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.blog-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 18px;
  color: var(--ink);
  text-decoration: none;
}
.blog-logo .ai { color: var(--blue); }
.blog-logo .blog-tag {
  background: var(--blue-light);
  color: var(--blue);
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: .5px;
}
.blog-nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
  align-items: center;
}
.blog-nav-links a {
  color: var(--ink-2);
  font-weight: 500;
  font-size: 14px;
  transition: color .2s;
  text-decoration: none;
}
.blog-nav-links a:hover { color: var(--blue); }
.blog-nav-cta {
  background: var(--blue);
  color: var(--white) !important;
  padding: 8px 18px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 13px;
  transition: background .2s;
}
.blog-nav-cta:hover { background: var(--blue-dark); text-decoration: none !important; }

/* ── Blog Hero ── */
.blog-hero {
  background: linear-gradient(135deg, #0B66E4 0%, #0952B5 100%);
  color: var(--white);
  padding: 60px 0 48px;
  text-align: center;
}
.blog-hero h1 {
  font-size: 2.2rem;
  font-weight: 900;
  margin-bottom: 12px;
  letter-spacing: -.02em;
}
.blog-hero p {
  font-size: 1.1rem;
  opacity: .85;
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ── Category Filter ── */
.category-filter {
  display: flex;
  gap: 8px;
  justify-content: center;
  padding: 20px 0;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--border);
  margin-bottom: 32px;
  background: var(--white);
}
.cat-btn {
  padding: 6px 16px;
  border-radius: 50px;
  border: 1px solid var(--border);
  background: var(--white);
  color: var(--ink-2);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s;
}
.cat-btn:hover, .cat-btn.active {
  background: var(--blue);
  color: var(--white);
  border-color: var(--blue);
}

/* ── Blog Grid ── */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}
.blog-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: all .25s;
  display: flex;
  flex-direction: column;
}
.blog-card:hover {
  box-shadow: 0 8px 32px rgba(0,0,0,.08);
  transform: translateY(-2px);
}
.blog-card-img {
  height: 180px;
  overflow: hidden;
  position: relative;
}
.blog-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s;
}
.blog-card:hover .blog-card-img img { transform: scale(1.03); }
.blog-card-cat {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
}
.cat-preparacao { background: #DBEAFE; color: #1E40AF; }
.cat-osce { background: #D1FAE5; color: #065F46; }
.cat-legislacao { background: #FEF3C7; color: #92400E; }
.cat-paises { background: #FCE7F3; color: #9D174D; }
.cat-carreira { background: #E0E7FF; color: #3730A3; }
.cat-edital { background: #FFEDD5; color: #9A3412; }
.cat-noticias { background: #F3E8FF; color: #6B21A8; }

/* Placeholder colorido se não houver imagem */
.blog-card-img.placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
}
.blog-card-img.placeholder.blue { background: linear-gradient(135deg, #DBEAFE, #93C5FD); }
.blog-card-img.placeholder.green { background: linear-gradient(135deg, #D1FAE5, #6EE7B7); }
.blog-card-img.placeholder.gold { background: linear-gradient(135deg, #FEF3C7, #FCD34D); }
.blog-card-img.placeholder.pink { background: linear-gradient(135deg, #FCE7F3, #F9A8D4); }
.blog-card-img.placeholder.purple { background: linear-gradient(135deg, #E0E7FF, #A5B4FC); }
.blog-card-img.placeholder.orange { background: linear-gradient(135deg, #FFEDD5, #FDBA74); }
.blog-card-img.placeholder.teal { background: linear-gradient(135deg, #CCFBF1, #5EEAD4); }

.blog-card-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 8px;
}
.blog-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.4;
  margin-bottom: 8px;
}
.blog-card-title a {
  color: inherit;
  text-decoration: none;
}
.blog-card-title a:hover { color: var(--blue); }
.blog-card-excerpt {
  font-size: .88rem;
  color: var(--ink-2);
  line-height: 1.55;
  flex: 1;
  margin-bottom: 12px;
}
.blog-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .78rem;
  color: var(--muted);
}
.read-more {
  color: var(--blue);
  font-weight: 600;
  font-size: .82rem;
  text-decoration: none;
}
.read-more:hover { text-decoration: underline; }

/* ── Featured Article ── */
.featured-article {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  margin-bottom: 40px;
  transition: box-shadow .3s;
}
.featured-article:hover { box-shadow: 0 8px 40px rgba(0,0,0,.08); }
.featured-img {
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
}
.featured-body {
  padding: 32px 32px 32px 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.featured-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--blue-light);
  color: var(--blue);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 6px;
  margin-bottom: 12px;
  width: fit-content;
  text-transform: uppercase;
  letter-spacing: .5px;
}
.featured-title {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--ink);
  line-height: 1.3;
  margin-bottom: 12px;
}
.featured-excerpt {
  font-size: .95rem;
  color: var(--ink-2);
  line-height: 1.6;
  margin-bottom: 16px;
}
.featured-meta {
  font-size: .82rem;
  color: var(--muted);
  display: flex;
  gap: 16px;
}

/* ── Article Page ── */
.article-header {
  padding: 48px 0 32px;
  text-align: center;
}
.article-breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: .82rem;
  color: var(--muted);
  margin-bottom: 16px;
}
.article-breadcrumb a { color: var(--blue); text-decoration: none; }
.article-breadcrumb a:hover { text-decoration: underline; }
.article-category {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 14px;
}
.article-title {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--ink);
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: -.02em;
}
.article-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  font-size: .85rem;
  color: var(--muted);
  flex-wrap: wrap;
}
.article-meta i { margin-right: 4px; }

/* Article Body */
.article-body {
  padding-bottom: 48px;
}
.article-body h2 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--ink);
  margin: 36px 0 16px;
  letter-spacing: -.01em;
}
.article-body h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--ink);
  margin: 28px 0 12px;
}
.article-body p {
  margin-bottom: 18px;
  color: var(--ink-2);
  font-size: 1.05rem;
  line-height: 1.8;
}
.article-body ul, .article-body ol {
  margin: 0 0 18px 24px;
  color: var(--ink-2);
  font-size: 1.05rem;
  line-height: 1.8;
}
.article-body li { margin-bottom: 6px; }
.article-body blockquote {
  margin: 24px 0;
  padding: 20px 24px;
  border-left: 4px solid var(--blue);
  background: var(--blue-light);
  border-radius: 0 8px 8px 0;
  font-size: 1.05rem;
  color: var(--ink);
  font-style: italic;
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: .95rem;
}
.article-body th, .article-body td {
  padding: 12px 16px;
  border: 1px solid var(--border);
  text-align: left;
}
.article-body th {
  background: var(--blue-light);
  font-weight: 700;
  color: var(--ink);
}
.article-body strong { color: var(--ink); }

/* Callout boxes */
.callout {
  margin: 24px 0;
  padding: 20px 24px;
  border-radius: 10px;
  font-size: .95rem;
}
.callout-info {
  background: #EFF6FF;
  border: 1px solid #BFDBFE;
  color: #1E40AF;
}
.callout-warning {
  background: #FFFBEB;
  border: 1px solid #FDE68A;
  color: #92400E;
}
.callout-success {
  background: #ECFDF5;
  border: 1px solid #A7F3D0;
  color: #065F46;
}
.callout-title {
  font-weight: 700;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* CTA Box in article */
.article-cta {
  background: linear-gradient(135deg, #0B66E4, #0952B5);
  color: var(--white);
  padding: 32px;
  border-radius: 14px;
  text-align: center;
  margin: 36px 0;
}
.article-cta h3 {
  color: var(--white) !important;
  font-size: 1.3rem;
  margin: 0 0 8px !important;
}
.article-cta p {
  color: rgba(255,255,255,.85) !important;
  font-size: .95rem;
  margin-bottom: 16px !important;
}
.article-cta .btn-cta {
  display: inline-block;
  background: var(--white);
  color: var(--blue);
  padding: 12px 28px;
  border-radius: 8px;
  font-weight: 800;
  font-size: .95rem;
  text-decoration: none;
  transition: transform .15s;
}
.article-cta .btn-cta:hover { transform: scale(1.03); text-decoration: none; }

/* Table of Contents */
.toc {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 24px;
  margin: 24px 0 32px;
}
.toc-title {
  font-weight: 700;
  font-size: .9rem;
  color: var(--ink);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.toc ol {
  margin: 0 0 0 20px;
  color: var(--blue);
  font-size: .9rem;
  line-height: 2;
}
.toc a { text-decoration: none; }
.toc a:hover { text-decoration: underline; }

/* Share bar */
.share-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin: 32px 0;
}
.share-bar span {
  font-size: .85rem;
  font-weight: 600;
  color: var(--ink-2);
}
.share-btn {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-2);
  font-size: .9rem;
  cursor: pointer;
  transition: all .2s;
  text-decoration: none;
}
.share-btn:hover { background: var(--blue-light); color: var(--blue); border-color: var(--blue); }

/* Related articles */
.related-section {
  padding: 40px 0;
  border-top: 1px solid var(--border);
}
.related-section h2 {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 24px;
  text-align: center;
}

/* Newsletter */
.newsletter-section {
  background: var(--ink);
  color: var(--white);
  padding: 48px 0;
  text-align: center;
}
.newsletter-section h2 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 8px;
}
.newsletter-section p {
  color: rgba(255,255,255,.7);
  margin-bottom: 20px;
  font-size: .95rem;
}
.newsletter-form {
  display: flex;
  gap: 10px;
  max-width: 460px;
  margin: 0 auto;
}
.newsletter-form input {
  flex: 1;
  padding: 12px 16px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,.2);
  background: rgba(255,255,255,.08);
  color: var(--white);
  font-size: .95rem;
}
.newsletter-form input::placeholder { color: rgba(255,255,255,.4); }
.newsletter-form button {
  background: var(--blue);
  color: var(--white);
  padding: 12px 24px;
  border-radius: 8px;
  border: none;
  font-weight: 700;
  cursor: pointer;
  transition: background .2s;
  white-space: nowrap;
}
.newsletter-form button:hover { background: var(--blue-dark); }

/* Footer */
.blog-footer {
  background: var(--white);
  border-top: 1px solid var(--border);
  padding: 32px 0;
  text-align: center;
  color: var(--muted);
  font-size: .85rem;
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .featured-article { grid-template-columns: 1fr; }
  .featured-img { min-height: 220px; }
  .featured-body { padding: 24px; }
  .featured-title { font-size: 1.3rem; }
}
@media (max-width: 640px) {
  .blog-grid { grid-template-columns: 1fr; }
  .blog-hero { padding: 40px 0 32px; }
  .blog-hero h1 { font-size: 1.6rem; }
  .blog-hero p { font-size: .95rem; }
  .article-title { font-size: 1.6rem; }
  .article-body h2 { font-size: 1.3rem; }
  .article-body p, .article-body li { font-size: .98rem; }
  .blog-nav-links { display: none; }
  .newsletter-form { flex-direction: column; }
  .category-filter { gap: 6px; padding: 14px 12px; }
  .cat-btn { font-size: 12px; padding: 5px 12px; }
  .article-cta { padding: 24px 20px; }
}