/* ============================================
   MÉTODO VITALIDADE — Blog SEO
   Dark premium theme, mobile-first
   ============================================ */

:root {
  --bg-dark: #0a0a0f;
  --bg-card: #12121a;
  --bg-card-hover: #1a1a25;
  --accent: #00c896;
  --accent-hover: #00e6ac;
  --accent-glow: rgba(0, 200, 150, 0.25);
  --text-primary: #f0f0f5;
  --text-secondary: #a0a0b0;
  --text-muted: #6a6a7a;
  --border: #2a2a35;
  --gradient-accent: linear-gradient(135deg, #00c896 0%, #00a3e0 100%);
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
  --max-width: 760px;
  --max-width-wide: 1080px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-main);
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

/* ---- NAV ---- */
.blog-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10,10,15,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 14px 20px;
}

.blog-nav .nav-inner {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.blog-nav .logo {
  font-size: 1.1rem;
  font-weight: 800;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.blog-nav .nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 4px;
}

.blog-nav .nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.blog-nav .nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

.blog-nav .nav-links a:hover,
.blog-nav .nav-links a.active {
  color: var(--accent);
}

.blog-nav .nav-links .nav-cta {
  background: var(--gradient-accent);
  color: #000 !important;
  -webkit-text-fill-color: #000;
  padding: 8px 20px;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 700;
  transition: transform 0.2s;
}

.blog-nav .nav-links .nav-cta:hover {
  transform: translateY(-1px);
  color: #000 !important;
  -webkit-text-fill-color: #000;
}

@media (max-width: 640px) {
  .blog-nav .nav-toggle {
    display: block;
  }

  .blog-nav .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10,10,15,0.98);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 20px;
    gap: 16px;
  }

  .blog-nav .nav-links.open {
    display: flex;
  }

  .blog-nav .nav-cta {
    text-align: center;
    display: block;
    padding: 12px 20px;
  }
}

/* ---- BLOG INDEX ---- */
.blog-hero {
  text-align: center;
  padding: 80px 20px 40px;
  background: radial-gradient(ellipse at 50% 0%, rgba(0,200,150,0.06) 0%, transparent 50%), var(--bg-dark);
}

.blog-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 12px;
}

.blog-hero p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 540px;
  margin: 0 auto;
}

.blog-grid {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 40px 20px 80px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.3s, transform 0.2s;
  display: flex;
  flex-direction: column;
}

.blog-card:hover {
  border-color: rgba(0,200,150,0.4);
  transform: translateY(-4px);
}

.blog-card .card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  background: linear-gradient(135deg, var(--bg-card-hover), var(--bg-dark));
}

.blog-card .card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.blog-card .card-tag {
  display: inline-block;
  background: rgba(0,200,150,0.1);
  color: var(--accent);
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
  width: fit-content;
}

.blog-card .card-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.3;
}

.blog-card .card-excerpt {
  font-size: 0.9rem;
  color: var(--text-secondary);
  flex: 1;
  margin-bottom: 16px;
}

.blog-card .card-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ---- ARTICLE ---- */
.article-header {
  text-align: center;
  padding: 80px 20px 40px;
  background: radial-gradient(ellipse at 50% 0%, rgba(0,200,150,0.06) 0%, transparent 50%), var(--bg-dark);
}

.article-header .tag {
  display: inline-block;
  background: rgba(0,200,150,0.1);
  color: var(--accent);
  padding: 6px 14px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 20px;
}

.article-header h1 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 800;
  line-height: 1.2;
  max-width: var(--max-width);
  margin: 0 auto 16px;
}

.article-header .meta {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.article-body {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px 20px 80px;
}

.article-body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 48px 0 16px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.article-body h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 32px 0 12px;
  color: var(--accent);
}

.article-body p {
  margin-bottom: 18px;
  color: var(--text-secondary);
}

.article-body strong {
  color: var(--text-primary);
}

.article-body ul, .article-body ol {
  margin: 0 0 18px 24px;
  color: var(--text-secondary);
}

.article-body li {
  margin-bottom: 8px;
}

.article-body blockquote {
  border-left: 3px solid var(--accent);
  padding: 16px 20px;
  margin: 24px 0;
  background: var(--bg-card);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: var(--text-secondary);
}

.article-body .info-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 24px;
  margin: 24px 0;
}

.article-body .info-box h4 {
  font-size: 1rem;
  margin-bottom: 8px;
  color: var(--accent);
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
}

.article-body th, .article-body td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.article-body th {
  background: var(--bg-card);
  color: var(--accent);
  font-weight: 600;
}

.article-body td {
  color: var(--text-secondary);
}

/* ---- INLINE CTA ---- */
.inline-cta {
  background: var(--bg-card);
  border: 2px solid var(--accent);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  margin: 40px 0;
  box-shadow: 0 4px 30px rgba(0,200,150,0.15);
}

.inline-cta h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary) !important;
  border: none;
  padding: 0;
}

.inline-cta p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.inline-cta .btn-cta {
  display: inline-block;
  background: var(--gradient-accent);
  color: #000;
  padding: 14px 36px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 1rem;
  transition: transform 0.2s;
}

.inline-cta .btn-cta:hover {
  transform: translateY(-2px);
  color: #000;
}

/* ---- RELATED ARTICLES ---- */
.related-section {
  padding: 60px 20px;
  border-top: 1px solid var(--border);
}

.related-section h2 {
  text-align: center;
  font-size: 1.3rem;
  margin-bottom: 32px;
}

.related-grid {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

/* ---- FOOTER ---- */
.blog-footer {
  padding: 40px 20px;
  text-align: center;
  border-top: 1px solid var(--border);
}

.blog-footer p {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

/* ---- RESPONSIVE ---- */
@media (max-width: 480px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
}