/* blog.css */
.blog-search-wrap { position: relative; max-width: 480px; margin: 2rem auto 0; }
.blog-search {
  width: 100%;
  padding: 0.85rem 1rem 0.85rem 3rem;
  background: var(--card-bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-full);
  color: var(--text);
  font-size: 0.9375rem;
  outline: none;
  backdrop-filter: blur(8px);
  transition: border-color 0.3s, box-shadow 0.3s;
}
.blog-search:focus { border-color: var(--blue-500); box-shadow: 0 0 0 3px rgba(59,130,246,0.15); }
.blog-search::placeholder { color: var(--text-3); }
.bs-icon { position: absolute; left: 1rem; top: 50%; transform: translateY(-50%); color: var(--text-3); pointer-events: none; }

.blog-tabs-wrap { background: var(--bg-2); border-bottom: 1px solid var(--border); }
.blog-tabs { display: flex; gap: 0; overflow-x: auto; scrollbar-width: none; padding: 0; }
.blog-tabs::-webkit-scrollbar { display: none; }
.btab { padding: 1rem 1.5rem; font-size: 0.875rem; font-weight: 600; color: var(--text-2); background: none; border: none; border-bottom: 2px solid transparent; cursor: pointer; font-family: var(--font-display); transition: color var(--dur-base), border-color var(--dur-base); white-space: nowrap; }
.btab:hover { color: var(--text); }
.btab.active { color: var(--blue-500); border-color: var(--blue-500); }

/* Featured Article */
.featured-label { margin-bottom: 1.25rem; }
.featured-article {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 3rem;
  padding: 2.5rem;
  align-items: center;
}
.fa-meta { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1rem; flex-wrap: wrap; }
.fa-date, .fa-read { font-size: 0.78rem; color: var(--text-3); font-weight: 600; }
.fa-title { font-family: var(--font-display); font-size: clamp(1.3rem, 2.5vw, 1.9rem); font-weight: 800; line-height: 1.25; margin-bottom: 1rem; }
.fa-excerpt { font-size: 0.9375rem; color: var(--text-2); line-height: 1.75; margin-bottom: 1.5rem; }
.fa-footer { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.fa-author { display: flex; align-items: center; gap: 0.7rem; }
.fa-avatar { width: 42px; height: 42px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.85rem; font-weight: 700; color: #fff; }
.fa-author strong { display: block; font-size: 0.9rem; font-weight: 700; }
.fa-author span { font-size: 0.76rem; color: var(--text-3); }
.fa-cta { padding: 0.65rem 1.35rem; font-size: 0.875rem; }

/* Featured Visual */
.fa-visual { display: flex; align-items: center; justify-content: center; }
.fav-diagram { display: flex; flex-direction: column; gap: 0.75rem; align-items: center; }
.fav-gateway { width: 160px; text-align: center; padding: 0.6rem 1rem; background: rgba(59,130,246,0.12); border: 1px solid rgba(59,130,246,0.3); border-radius: var(--radius-sm); font-size: 0.78rem; font-weight: 700; color: var(--blue-400); }
.fav-row { display: flex; gap: 0.5rem; }
.fav-service { padding: 0.5rem 0.75rem; background: rgba(6,182,212,0.08); border: 1px solid rgba(6,182,212,0.25); border-radius: var(--radius-xs); font-size: 0.7rem; font-weight: 700; color: var(--cyan-400); }
.fav-db { padding: 0.4rem 0.75rem; background: rgba(139,92,246,0.08); border: 1px solid rgba(139,92,246,0.2); border-radius: var(--radius-xs); font-size: 0.7rem; font-weight: 700; color: var(--purple-400); }

/* Blog Grid */
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.blog-card.filtered-out { display: none; }
.bc-header { min-height: 120px; display: flex; align-items: center; justify-content: center; border-radius: var(--radius-lg) var(--radius-lg) 0 0; }
.bc-icon { opacity: 0.8; }
.bc-body { padding: 1.5rem; }
.bc-meta { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.85rem; }
.bc-read { font-size: 0.72rem; color: var(--text-3); font-weight: 600; }
.bc-title { font-family: var(--font-display); font-size: 1.0625rem; font-weight: 700; line-height: 1.35; margin-bottom: 0.7rem; }
.bc-excerpt { font-size: 0.875rem; color: var(--text-2); line-height: 1.7; margin-bottom: 1.1rem; }
.bc-footer { display: flex; align-items: center; justify-content: space-between; }
.bc-author { display: flex; align-items: center; gap: 0.5rem; }
.bc-ava { width: 32px; height: 32px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.7rem; font-weight: 700; color: #fff; }
.bc-author strong { font-size: 0.8rem; font-weight: 700; }
.bc-date { font-size: 0.72rem; color: var(--text-3); font-weight: 600; }

.load-more-wrap { display: flex; justify-content: center; margin-top: 3rem; }

/* Newsletter */
.newsletter-section { padding: 4rem 0; background: var(--bg-2); border-top: 1px solid var(--border); }
.newsletter-inner { max-width: 700px; margin: 0 auto; text-align: center; }
.nl-content h2 { font-family: var(--font-display); font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 800; line-height: 1.2; margin-bottom: 0.75rem; }
.nl-content p { font-size: 0.9375rem; color: var(--text-2); line-height: 1.7; margin-bottom: 2rem; }
.nl-form { display: flex; gap: 0.75rem; max-width: 460px; margin: 0 auto 1rem; }
.nl-form input[type="email"] {
  flex: 1;
  padding: 0.875rem 1rem;
  background: var(--input-bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text);
  font-size: 0.9375rem;
  outline: none;
  transition: border-color 0.3s;
}
.nl-form input:focus { border-color: var(--blue-500); }
.nl-form input::placeholder { color: var(--text-3); }
.nl-note { font-size: 0.78rem; color: var(--text-3); }

@media (max-width: 1024px) {
  .featured-article { grid-template-columns: 1fr; }
  .fa-visual { display: none; }
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .blog-grid { grid-template-columns: 1fr; }
  .nl-form { flex-direction: column; }
}