/* ==========================================================================
   Ignite Tow Network — Blog section & article pages
   ========================================================================== */

.home-blogs {
  padding: 80px 0 96px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-light);
}

.home-blogs__header {
  max-width: 720px;
  margin-bottom: 40px;
}

.home-blogs__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  justify-content: center;
  align-items: stretch;
}

.blog-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(37, 99, 235, 0.25);
}

.blog-card--placeholder {
  cursor: default;
}

.blog-card--placeholder:hover {
  transform: none;
  box-shadow: var(--shadow-sm);
  border-color: var(--border-light);
}

.blog-card__media {
  display: block;
  position: relative;
  text-decoration: none;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-tertiary);
}

.blog-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

.blog-card:hover .blog-card__media img {
  transform: scale(1.04);
}

.blog-card--placeholder:hover .blog-card__media img {
  transform: none;
}

.blog-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 24px 24px 28px;
  gap: 12px;
}

.blog-card__title {
  margin: 0;
  font-size: var(--font-size-xl);
  line-height: 1.35;
  color: var(--text-primary);
}

.blog-card__title a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

.blog-card__title a:hover {
  color: var(--brand-primary);
}

.blog-card__excerpt {
  margin: 0;
  flex: 1;
  font-size: var(--font-size-sm);
  line-height: 1.65;
  color: var(--text-secondary);
}

.blog-card__action {
  margin-top: 8px;
}

.blog-card__btn[disabled] {
  opacity: 0.72;
  cursor: not-allowed;
  pointer-events: none;
}

/* Article page */
.blog-page {
  padding: 32px 0 80px;
  background: var(--bg-secondary);
}

.blog-breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.blog-breadcrumbs a {
  color: var(--brand-primary);
  text-decoration: none;
}

.blog-breadcrumbs a:hover {
  text-decoration: underline;
}

.blog-breadcrumbs__sep {
  color: var(--border-medium);
}

.blog-back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
  padding: 8px 14px 8px 10px;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-secondary);
  text-decoration: none;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  background: var(--bg-primary);
  box-shadow: var(--shadow-sm);
  transition: color var(--transition), border-color var(--transition), background var(--transition), transform var(--transition), box-shadow var(--transition);
}

.blog-back-link svg {
  flex-shrink: 0;
  transition: transform var(--transition);
}

.blog-back-link:hover {
  color: var(--brand-primary);
  border-color: rgba(37, 99, 235, 0.3);
  background: rgba(37, 99, 235, 0.04);
  box-shadow: var(--shadow-md);
  transform: translateX(-2px);
}

.blog-back-link:hover svg {
  transform: translateX(-3px);
}

.blog-back-bottom {
  display: flex;
  justify-content: center;
  margin-top: 40px;
}

.blog-article {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 40px;
  align-items: start;
}

.blog-article__hero {
  margin-bottom: 32px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-md);
}

.blog-article__hero img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.blog-article__header {
  margin-bottom: 28px;
}

.blog-article__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 12px;
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.blog-article__badge {
  display: inline-flex;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: rgba(37, 99, 235, 0.1);
  color: var(--brand-dark);
  font-weight: 600;
  font-size: var(--font-size-xs);
}

.blog-article__title {
  margin: 0 0 12px;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  line-height: 1.2;
  color: var(--text-primary);
}

.blog-article__lead {
  margin: 0;
  font-size: var(--font-size-lg);
  line-height: 1.65;
  color: var(--text-secondary);
}

.blog-article__content {
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 32px 36px;
  box-shadow: var(--shadow-sm);
}

.blog-article__body h2 {
  margin: 2rem 0 1rem;
  font-size: var(--font-size-2xl);
  line-height: 1.3;
  color: var(--text-primary);
  scroll-margin-top: calc(var(--nav-height) + 24px);
}

.blog-article__body h2:first-child {
  margin-top: 0;
}

.blog-article__body h3 {
  margin: 1.5rem 0 0.75rem;
  font-size: var(--font-size-xl);
  line-height: 1.35;
  color: var(--text-primary);
  scroll-margin-top: calc(var(--nav-height) + 24px);
}

.blog-article__body hr {
  margin: 2rem 0;
  border: 0;
  border-top: 1px solid var(--border-light);
}

.blog-article__body p {
  margin: 0 0 1rem;
  line-height: 1.75;
  color: var(--text-secondary);
}

.blog-article__body ul,
.blog-article__body ol {
  margin: 0 0 1.25rem;
  padding-left: 1.35rem;
  color: var(--text-secondary);
}

.blog-article__body li {
  margin-bottom: 0.5rem;
  line-height: 1.65;
}

.blog-footer {
  padding: 32px 24px 48px;
  text-align: center;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-light);
}

.blog-footer__copy {
  margin: 0;
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.blog-article__cta {
  margin-top: 2rem;
  padding: 24px;
  border-radius: var(--radius-lg);
  background: var(--ignite-gradient-soft);
  border: 1px solid rgba(37, 99, 235, 0.15);
  text-align: center;
}

.blog-article__cta p {
  margin: 0 0 8px;
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
}

.blog-toc {
  position: sticky;
  top: calc(var(--nav-height) + 24px);
  padding: 24px;
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.blog-toc__title {
  margin: 0 0 16px;
  font-size: var(--font-size-sm);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.blog-toc__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.blog-toc__list a {
  display: block;
  font-size: var(--font-size-sm);
  line-height: 1.45;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition);
}

.blog-toc__list a:hover {
  color: var(--brand-primary);
}

@media (max-width: 1024px) {
  .home-blogs__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 960px) {
  .blog-article {
    grid-template-columns: 1fr;
  }

  .blog-toc {
    position: static;
    order: -1;
  }

  .blog-article__content {
    padding: 24px 20px;
  }
}

@media (max-width: 640px) {
  .home-blogs {
    padding: 56px 0 72px;
  }

  .home-blogs__grid {
    grid-template-columns: 1fr;
  }
}