/* =====================================================
   Blog / Knowledge Base – Asvakas Engineering
   Shared styles for hub + article pages
   ===================================================== */

/* ── Hub Hero ── */
.blog-hub-page .page-hero,
.blog-article-page .page-hero {
  background: var(--primary);
  padding: 8rem 0 3.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.blog-hub-page .page-hero::after,
.blog-article-page .page-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 60% 0%, rgba(255,88,32,0.12) 0%, transparent 70%);
  pointer-events: none;
}
.page-hero-inner {
  position: relative;
  z-index: 2;
}
.page-hero-pill {
  display: inline-block;
  color: var(--accent);
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 999px;
  padding: 0.38rem 1.1rem;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 1rem;
}
.page-hero h1 {
  color: #fff;
  font-size: clamp(1.9rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0 auto 1rem;
  max-width: 820px;
}
.page-hero p {
  color: rgba(255,255,255,0.72);
  font-size: clamp(0.95rem, 1.4vw, 1.08rem);
  max-width: 620px;
  margin: 0 auto;
}

/* ── Breadcrumb ── */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
  justify-content: center;
  margin-bottom: 1.2rem;
  flex-wrap: wrap;
}
.breadcrumb a {
  color: rgba(255,255,255,0.65);
  text-decoration: none;
}
.breadcrumb a:hover { color: #fff; }
.breadcrumb-sep { color: rgba(255,255,255,0.3); }

/* ── Hub Search & Filter Bar ── */
.blog-search-wrap {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 1.5rem 0;
  position: sticky;
  top: 60px;
  z-index: 90;
}
.blog-search-inner {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
}
.blog-search-bar {
  position: relative;
  width: 100%;
  max-width: 520px;
}
.blog-search-bar input {
  width: 100%;
  padding: 0.72rem 1rem 0.72rem 2.65rem;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
  background: #fff;
  color: var(--primary);
  font-family: inherit;
  outline: none;
  box-sizing: border-box;
  transition: border-color 0.2s;
}
.blog-search-bar input:focus { border-color: var(--accent); }
.blog-search-icon {
  position: absolute;
  left: 0.82rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--subtext);
  pointer-events: none;
}
.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}
.blog-filter-btn {
  border: 1.5px solid var(--border);
  background: #fff;
  color: var(--subtext);
  border-radius: 999px;
  padding: 0.36rem 1rem;
  font-size: 0.82rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.18s;
}
.blog-filter-btn:hover,
.blog-filter-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* ── Hub Article Grid ── */
.blog-grid-section {
  padding: 3.5rem 0 5rem;
  background: var(--bg);
}
.blog-grid-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
}
.blog-grid-header h2 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary);
  margin: 0;
}
.blog-count {
  font-size: 0.85rem;
  color: var(--subtext);
}
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 1.75rem;
}
.blog-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.22s, transform 0.22s;
}
.blog-card:hover {
  box-shadow: 0 8px 32px rgba(32,47,68,0.12);
  transform: translateY(-3px);
}
.blog-card-img {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: #e8eaed;
}
.blog-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s;
}
.blog-card:hover .blog-card-img img { transform: scale(1.04); }
.blog-card-body {
  padding: 1.25rem 1.4rem 1.4rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}
.blog-cat-pill {
  display: inline-block;
  font-size: 0.73rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 0.22rem 0.6rem;
}
.blog-read-time {
  font-size: 0.77rem;
  color: var(--subtext);
}
.blog-card-body h3 {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.38;
  margin: 0;
}
.blog-card-body p {
  font-size: 0.875rem;
  color: var(--subtext);
  line-height: 1.58;
  margin: 0;
  flex: 1;
}
.blog-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 0.8rem;
  padding-top: 0.8rem;
  border-top: 1px solid var(--border);
}
.blog-card-date {
  font-size: 0.77rem;
  color: var(--subtext);
}
.blog-card-arrow {
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 700;
}
.blog-no-results {
  display: none;
  text-align: center;
  padding: 4rem 0;
  color: var(--subtext);
  grid-column: 1 / -1;
}
.blog-no-results p { font-size: 1rem; margin: 0; }
.blog-card[hidden] { display: none !important; }

/* ── Article Page Layout ── */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 3.5rem;
  padding: 3.5rem 1rem 5rem;
  align-items: start;
  max-width: 1160px;
  margin: 0 auto;
  box-sizing: border-box;
}
@media (max-width: 940px) {
  .article-layout { grid-template-columns: 1fr; gap: 2rem; }
  .article-sidebar { order: -1; }
}

/* ── Article Meta Row ── */
.article-meta-row {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-wrap: wrap;
  margin-bottom: 1.8rem;
  font-size: 0.82rem;
  color: var(--subtext);
}
.article-meta-sep { color: var(--border-strong); }

/* ── Table of Contents ── */
.toc-box {
  background: #f8f9fb;
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: 8px;
  padding: 1.4rem 1.6rem;
  margin: 0 0 2.2rem;
}
.toc-box h4 {
  margin: 0 0 0.9rem;
  font-size: 0.87rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary);
}
.toc-box ol {
  margin: 0;
  padding-left: 1.3rem;
  display: flex;
  flex-direction: column;
  gap: 0.42rem;
}
.toc-box li { font-size: 0.9rem; }
.toc-box a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}
.toc-box a:hover { color: var(--accent); }

/* ── Article Typography ── */
.article-body h2 {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--primary);
  margin: 2.5rem 0 0.75rem;
  letter-spacing: -0.02em;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--border);
}
.article-body h3 {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--primary);
  margin: 1.8rem 0 0.55rem;
}
.article-body p {
  font-size: 0.975rem;
  line-height: 1.78;
  color: #374151;
  margin: 0 0 1.05rem;
}
.article-body ul,
.article-body ol {
  padding-left: 1.4rem;
  margin: 0 0 1.1rem;
}
.article-body li {
  font-size: 0.965rem;
  line-height: 1.72;
  color: #374151;
  margin-bottom: 0.32rem;
}
.article-body strong { color: var(--primary); }
.article-body a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ── Callout Box ── */
.callout {
  display: flex;
  gap: 1rem;
  background: var(--accent-soft);
  border: 1px solid #fbd9c8;
  border-radius: 8px;
  padding: 1.2rem 1.4rem;
  margin: 1.8rem 0;
}
.callout-icon { font-size: 1.4rem; flex-shrink: 0; margin-top: 0.1rem; }
.callout-body p { margin: 0; font-size: 0.915rem; line-height: 1.65; color: #374151; }
.callout-body strong { color: var(--accent); }

/* ── Info Table ── */
.info-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: 1.2rem 0 1.6rem;
}
.info-table th {
  background: var(--primary);
  color: #fff;
  padding: 0.65rem 1rem;
  text-align: left;
  font-weight: 700;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.info-table td {
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--border);
  color: #374151;
}
.info-table tr:nth-child(even) td { background: #f9fafb; }

/* ── FAQ Section ── */
.faq-section { margin-top: 3rem; }
.faq-section > h2 {
  border-bottom: 2px solid var(--border);
  padding-bottom: 0.5rem;
  margin-bottom: 1.4rem;
}
.faq-item { border-bottom: 1px solid var(--border); padding: 1.1rem 0; }
.faq-question {
  font-size: 0.985rem;
  font-weight: 700;
  color: var(--primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  user-select: none;
  list-style: none;
}
.faq-question::after {
  content: '+';
  font-size: 1.4rem;
  color: var(--accent);
  flex-shrink: 0;
  font-weight: 400;
  transition: transform 0.2s;
}
.faq-item.open .faq-question::after { transform: rotate(45deg); }
.faq-answer { display: none; padding-top: 0.78rem; }
.faq-item.open .faq-answer { display: block; }
.faq-answer p { font-size: 0.93rem; line-height: 1.72; color: var(--subtext); margin: 0; }

/* ── Article CTA ── */
.article-cta {
  background: var(--primary);
  border-radius: 12px;
  padding: 2.4rem;
  margin-top: 3.5rem;
  text-align: center;
}
.article-cta h3 { color: #fff; font-size: 1.35rem; margin: 0 0 0.65rem; }
.article-cta p { color: rgba(255,255,255,0.72); font-size: 0.92rem; margin: 0 0 1.5rem; max-width: 500px; margin-left: auto; margin-right: auto; }
.article-cta .btn-solid {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  border-radius: 6px;
  padding: 0.8rem 1.8rem;
  text-decoration: none;
  font-weight: 700;
  display: inline-block;
  transition: background 0.2s;
}
.article-cta .btn-solid:hover { background: #e04a17; }

/* ── Sidebar ── */
.article-sidebar {
  position: sticky;
  top: 90px;
  display: flex;
  flex-direction: column;
  gap: 1.6rem;
}
.sidebar-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.4rem;
}
.sidebar-box h4 {
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary);
  margin: 0 0 1rem;
}
.related-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.72rem;
}
.related-list li a {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
  display: flex;
  align-items: flex-start;
  gap: 0.45rem;
  line-height: 1.42;
}
.related-list li a::before {
  content: '→';
  color: var(--accent);
  flex-shrink: 0;
  margin-top: 0.04em;
}
.related-list li a:hover { color: var(--accent); }
.sidebar-cta-box {
  background: var(--accent);
  border-radius: 10px;
  padding: 1.6rem;
  text-align: center;
}
.sidebar-cta-box h4 {
  color: #fff;
  font-size: 1rem;
  margin: 0 0 0.5rem;
  text-transform: none;
  letter-spacing: 0;
}
.sidebar-cta-box p {
  color: rgba(255,255,255,0.85);
  font-size: 0.84rem;
  margin: 0 0 1.2rem;
  line-height: 1.55;
}
.sidebar-cta-box .btn {
  background: #fff;
  color: var(--accent);
  border: none;
  border-radius: 6px;
  font-size: 0.88rem;
  padding: 0.62rem 1.2rem;
  font-weight: 700;
  text-decoration: none;
  display: inline-block;
  transition: transform 0.18s;
}
.sidebar-cta-box .btn:hover { transform: translateY(-1px); }

@media (max-width: 600px) {
  .blog-grid { grid-template-columns: 1fr; }
  .article-layout { padding: 2rem 0 3rem; }
  .blog-hub-page .page-hero,
  .blog-article-page .page-hero { padding: 6.5rem 0 2.5rem; }
}