/* =====================================================
   LUMISEQ — PREMIUM BLOG COMPONENT SYSTEM
   Pixel-Perfect Standardization & Global Sync
   ===================================================== */

:root {
  /* Inherit from global style.css */
  --header-padding: 10rem 0 4rem;
  --hero-radius: 32px;
  --content-max-width: 760px;
}

/* ── THEME WRAPPER (Data-Category Driven) ── */
.blog-theme-root {
  --theme-accent: var(--accent);
  --theme-bg-soft: rgba(112, 224, 0, 0.05);
}
.blog-theme-root[data-category="web"] {
  --theme-accent: var(--blue);
  --theme-bg-soft: rgba(37, 99, 235, 0.05);
}
.blog-theme-root[data-category="design"] {
  --theme-accent: var(--purple);
  --theme-bg-soft: rgba(139, 92, 246, 0.05);
}

body.blog-page {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-b);
}

/* ── NAVBAR STANDARDIZATION ── */
header.navbar-blog {
  background: rgba(2, 4, 8, 0.8) !important;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: all 0.3s;
}

/* ── MODERN BLOG HEADER ── */
.modern-header {
  padding: var(--header-padding);
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.topic-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--theme-accent);
  margin-bottom: 1.5rem;
}
.topic-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 10px currentColor;
}

.post-date {
  display: block;
  font-size: 0.88rem;
  color: var(--muted);
  margin-bottom: 1.5rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.modern-post-title {
  font-family: var(--font-h);
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.04em;
  color: var(--text);
}

/* ── HERO CONTAINER ── */
.modern-hero-container {
  width: 100%;
  max-width: 600px;
  margin: 0 auto 8rem;
  border-radius: var(--hero-radius);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border);
}

.modern-hero-img {
  width: 100%;
  height: auto;
  display: block;
}

/* ── ARTICLE LAYOUT ── */
.modern-post-grid {
  display: flex;
  justify-content: center;
  gap: 6rem;
  max-width: 1260px;
  margin: 0 auto;
  padding: 0 2.5rem 10rem;
}

.article-content {
  flex: 1;
  max-width: var(--content-max-width);
}

/* ── CONTENT TYPOGRAPHY ── */
.article-content h2 {
  font-family: var(--font-h);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 700;
  color: var(--text);
  margin: 5rem 0 2rem;
  letter-spacing: -0.02em;
}

.article-content h3 {
  font-family: var(--font-h);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--text);
  margin: 3.5rem 0 1.5rem;
}

.article-content p {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--muted);
  margin-bottom: 1.8rem;
}

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

/* ── COMPONENT: TECHNICAL INFO BOX ── */
.tech-box-dark {
  background: rgba(255,255,255,0.015);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2.5rem;
  margin: 4rem 0;
  position: relative;
  overflow: hidden;
}

.tech-box-dark::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 100%;
  background: var(--theme-accent);
}

.tech-box-dark h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--theme-accent);
  margin-bottom: 1rem;
}

/* ── COMPONENT: CASE STUDY SUMMARY ── */
.case-study-overview {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 3rem;
  margin: 4.5rem 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
}

.case-overview-item h5 {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--muted);
  margin-bottom: 0.8rem;
}

.case-overview-item p {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  margin: 0;
  line-height: 1.4;
}

/* ── SIDEBAR STANDARDIZATION ── */
.modern-sidebar {
  width: 300px;
  position: sticky;
  top: 100px;
  height: fit-content;
}

/* Adoption of Global Glass Card Logic */
.sidebar-card, .glass-sidebar-card {
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2rem;
  margin-bottom: 2rem;
  backdrop-filter: blur(10px);
}

.sidebar-card h4, .glass-sidebar-card h4 {
  font-family: var(--font-h);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text);
  margin-bottom: 2rem;
  font-weight: 700;
  border-bottom: 1px solid var(--border);
  padding-bottom: 1rem;
}

.toc-nav {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  position: relative;
  padding-left: 1.2rem;
  border-left: 2px solid rgba(255, 255, 255, 0.05);
}

.toc-link {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.92rem;
  line-height: 1.4;
  transition: all 0.3s var(--ease);
  position: relative;
  display: block;
}

.toc-link::before {
  content: '';
  position: absolute;
  left: -1.2rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--theme-accent);
  transform: scaleY(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease), box-shadow 0.3s;
  margin-left: -2px; /* overlap the border-left exactly */
}

.toc-link:hover, .toc-link.active {
  color: var(--text);
  transform: translateX(4px);
}

.toc-link:hover::before, .toc-link.active::before {
  transform: scaleY(1);
  box-shadow: 0 0 10px var(--theme-accent);
}

/* ── SIDEBAR CTA ── */
.sidebar-cta {
  padding: 2.5rem 2rem;
  position: relative;
  overflow: hidden;
  text-align: center;
}

.sidebar-cta p {
  font-size: 0.92rem;
  margin-bottom: 2rem;
  line-height: 1.6;
}

.btn-sidebar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 1rem;
  border-radius: 8px;
  font-family: var(--font-h);
  font-weight: 700;
  font-size: 0.85rem;
  background: var(--theme-accent);
  color: #000;
  transition: all 0.3s;
}

.btn-sidebar:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
}

/* ── POST NAVIGATION ── */
.post-nav-modern {
  margin-top: 8rem;
  padding-top: 4rem;
  border-top: 1px solid var(--border);
}

.post-nav-modern a {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 600;
  transition: color 0.3s;
}

.post-nav-modern a:hover {
  color: var(--theme-accent);
}

/* ── GLOBAL BLOG FOOTER ── */
.blog-footer {
  background: #010204;
  padding: 8rem 0;
  border-top: 1px solid var(--border);
}

.footer-nav-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--muted);
  margin-bottom: 1.5rem;
  font-weight: 700;
}

.footer-blog-link {
  color: var(--muted);
  font-size: 0.9rem;
  text-decoration: none;
  transition: color 0.2s;
  display: block;
  margin-bottom: 0.8rem;
}

.footer-blog-link:hover {
  color: var(--text);
}

/* ── RESPONSIVE ── */
@media (max-width: 1100px) {
  .modern-post-grid {
    flex-direction: column-reverse;
    align-items: center;
    gap: 3rem;
  }
  .modern-sidebar {
    width: 100%;
    max-width: var(--content-max-width);
    position: relative;
    top: 0;
    margin-bottom: 2rem;
  }
  .sidebar-card, .glass-sidebar-card {
    margin-bottom: 0;
  }
}

@media (max-width: 768px) {
  .case-study-overview {
    grid-template-columns: 1fr;
    padding: 2.5rem;
    gap: 2rem;
  }
  .modern-header {
    padding: 8rem 1.5rem 3rem;
  }
  .modern-post-grid {
    padding: 0 1.5rem 5rem;
    gap: 2rem;
  }
  .modern-hero-container {
    margin: 0 auto 4rem;
  }
  .article-content h2 {
    margin: 3rem 0 1.5rem;
  }
  .article-content h3 {
    margin: 2rem 0 1rem;
  }
  .post-nav-modern {
    margin-top: 4rem;
    padding-top: 2rem;
  }
}

@media (max-width: 480px) {
  .modern-header {
    padding: 7rem 1.25rem 2.5rem;
  }
  .modern-post-grid {
    padding: 0 1.25rem 4rem;
  }
  .modern-post-title {
    font-size: clamp(1.9rem, 8vw, 2.8rem);
  }
  .sidebar-card, .glass-sidebar-card {
    padding: 1.5rem;
  }
}