/* ==========================================================================
   PREMIUM GLASSMORPHIC & INTUITIVE AUTHORITY BLOG STYLESHEET
   ========================================================================== */

:root {
  --blog-bg: #f8fafc;
  --blog-surface: #ffffff;
  --blog-text: #0f172a;
  --blog-muted: #475569;
  --blog-border: rgba(226, 232, 240, 0.8);
  --blog-primary: #2563eb;
  --blog-shadow: 0 14px 40px rgba(15, 23, 42, 0.04);
  --blog-glass-bg: rgba(255, 255, 255, 0.65);
  --blog-glass-border: rgba(226, 232, 240, 0.6);
  --blog-glass-shadow: rgba(15, 23, 42, 0.03);
  --neon-glow: 0 0 15px rgba(37, 99, 235, 0.1);
  --transition: all 0.35s cubic-bezier(0.25, 1, 0.5, 1);
  --border-radius: 16px;
}

[data-theme="dark"] {
  --blog-bg: #070f1d;
  --blog-surface: #111827;
  --blog-text: #e6eefc;
  --blog-muted: #9ca3af;
  --blog-border: rgba(36, 54, 85, 0.6);
  --blog-primary: #4f8cff;
  --blog-shadow: 0 14px 40px rgba(0, 0, 0, 0.35);
  --blog-glass-bg: rgba(17, 26, 44, 0.75);
  --blog-glass-border: rgba(36, 54, 85, 0.4);
  --blog-glass-shadow: rgba(0, 0, 0, 0.4);
  --neon-glow: 0 0 20px rgba(79, 140, 255, 0.2);
}

html {
  overflow-x: hidden;
  max-width: 100%;
}

body {
  background-color: var(--blog-bg);
  color: var(--blog-text);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  transition: background-color 0.3s, color 0.3s;
  overflow-x: hidden;
  max-width: 100%;
  position: relative;
  -webkit-overflow-scrolling: touch;
}

.blog-main {
  padding: 8.5rem 0 5rem;
}

.blog-container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

.blog-hero {
  margin-bottom: 3rem;
  position: relative;
}

.blog-label {
  display: inline-block;
  background: rgba(99, 102, 241, 0.08);
  color: var(--blog-primary);
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border: 1px solid rgba(99, 102, 241, 0.15);
}

.blog-hero h1 {
  margin: 1rem 0 0.6rem;
  font-size: clamp(2rem, 5vw, 3rem);
  letter-spacing: -0.02em;
  color: var(--blog-text);
  font-weight: 800;
}

.blog-hero p {
  margin: 0;
  color: var(--blog-muted);
  max-width: 680px;
  font-size: 1.05rem;
}

/* 1. Interactive Search Box & Tab Filter controls */
.blog-controls {
  margin-top: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  width: 100%;
}

.blog-search-box {
  position: relative;
  width: min(480px, 100%);
}

.blog-search-box .search-icon {
  position: absolute;
  left: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--blog-muted);
  font-size: 1rem;
  pointer-events: none;
}

#blog-search {
  width: 100%;
  padding: 0.85rem 1.25rem 0.85rem 2.85rem;
  border-radius: 50px;
  border: 1px solid var(--blog-border);
  background: var(--blog-surface);
  color: var(--blog-text);
  font-size: 0.95rem;
  outline: none;
  box-shadow: var(--blog-shadow);
  transition: var(--transition);
}

#blog-search:focus {
  border-color: var(--blog-primary);
  box-shadow: var(--neon-glow);
}

.blog-categories {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
}

.category-tab {
  background: var(--blog-surface);
  border: 1px solid var(--blog-border);
  color: var(--blog-muted);
  padding: 0.6rem 1.25rem;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: var(--blog-shadow);
  transition: var(--transition);
}

.category-tab:hover {
  border-color: var(--blog-primary);
  color: var(--blog-text);
  transform: translateY(-2px);
}

.category-tab.active {
  background: var(--blog-primary);
  color: #fff;
  border-color: var(--blog-primary);
  box-shadow: 0 8px 20px rgba(99, 102, 241, 0.25);
}

/* Real-time Search Telemetry Counter */
.search-telemetry {
  font-size: 0.85rem;
  color: var(--blog-muted);
  font-weight: 600;
  margin-left: 0.5rem;
}

/* 2. Visual Magazine Blog Grid */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
  margin-top: 1.5rem;
}

.blog-card {
  background: var(--blog-glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--blog-glass-border);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: 0 10px 30px var(--blog-glass-shadow);
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: transform 0.4s cubic-bezier(0.165, 0.84, 0.44, 1), 
              box-shadow 0.4s ease, 
              border-color 0.3s;
}

.blog-card-image-wrap {
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
  position: relative;
  border-bottom: 1px solid var(--blog-glass-border);
}

.blog-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.blog-card:hover img {
  transform: scale(1.05);
}

.blog-card:hover {
  transform: translateY(-6px);
  border-color: var(--blog-primary);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.08), var(--neon-glow);
}

[data-theme="dark"] .blog-card:hover {
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.45), var(--neon-glow);
}

.blog-card-content {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  flex: 1;
}

.blog-meta {
  color: var(--blog-muted);
  font-size: 0.825rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.blog-meta i {
  color: var(--blog-primary);
}

.blog-card h2,
.related-posts h2 {
  margin: 0;
  font-size: 1.35rem;
  line-height: 1.4;
  font-weight: 700;
  color: var(--blog-text);
}

.blog-card h2 a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

.blog-card h2 a:hover {
  color: var(--blog-primary);
}

.blog-card p {
  margin: 0;
  color: var(--blog-muted);
  line-height: 1.7;
  font-size: 0.95rem;
  flex: 1;
}

.blog-card-badge {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
  margin-left: auto;
}

.read-link {
  margin-top: auto;
  color: var(--blog-primary);
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: var(--transition);
}

.read-link:hover {
  gap: 0.65rem;
  color: var(--blog-primary);
}

/* 3. Premier Featured card split layout */
@media (min-width: 860px) {
  .blog-card.featured-card {
    grid-column: span 2;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    height: auto;
  }
  .blog-card.featured-card .blog-card-image-wrap {
    height: 100%;
    aspect-ratio: auto;
    border-bottom: none;
    border-right: 1px solid var(--blog-glass-border);
  }
  .blog-card.featured-card .blog-card-content {
    padding: 2.5rem;
    justify-content: center;
    gap: 1.2rem;
  }
  .blog-card.featured-card h2 {
    font-size: 1.85rem;
    line-height: 1.35;
  }
  .blog-card.featured-card p {
    font-size: 1.05rem;
  }
}

/* 4. Single Article Post shell styling */
.post-shell {
  width: min(780px, 92%);
  margin: 0 auto;
}

.post-hero {
  margin-bottom: 2.5rem;
  text-align: center;
}

.post-hero .blog-meta {
  justify-content: center;
  margin-bottom: 1rem;
}

.post-hero h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--blog-text);
  margin-bottom: 1.5rem;
}

.post-hero img {
  width: 100%;
  border-radius: 20px;
  box-shadow: var(--blog-shadow);
  margin-top: 1rem;
}

.post-content {
  background: var(--blog-glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--blog-glass-border);
  border-radius: 20px;
  padding: 3.5rem;
  box-shadow: 0 15px 35px var(--blog-glass-shadow);
  font-size: 1.1rem;
  line-height: 1.85;
}

.post-content h2,
.post-content h3 {
  color: var(--blog-text);
  margin: 2.5rem 0 1rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.post-content h2 {
  font-size: 1.65rem;
  border-left: 4px solid var(--blog-primary);
  padding-left: 1rem;
}

.post-content h3 {
  font-size: 1.35rem;
}

.post-content p,
.post-content ul,
.post-content ol {
  margin-bottom: 1.6rem;
  color: var(--blog-text);
  opacity: 0.95;
}

.post-content li {
  margin-bottom: 0.65rem;
  margin-left: 1.5rem;
}

.post-content pre {
  background: #0d1117;
  color: #c9d1d9;
  border-radius: 12px;
  padding: 1.5rem;
  overflow-x: auto;
  font-size: 0.95rem;
  margin: 1.5rem 0;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

[data-theme="light"] .post-content pre {
  background: #0f172a;
}

.post-content code {
  font-family: ui-monospace, SFMono-Regular, SF Mono, Menlo, Consolas, monospace;
}

/* 5. Sleek calling boxes and author overlays */
.author-box,
.post-cta,
.related-posts {
  margin-top: 2rem;
  background: var(--blog-glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--blog-glass-border);
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--blog-shadow);
}

.author-box {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.author-avatar {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--blog-primary);
  box-shadow: var(--neon-glow);
}

.author-details h4 {
  margin: 0 0 0.35rem 0;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--blog-text);
}

.author-details p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--blog-muted);
  line-height: 1.5;
}

.post-cta {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.06) 0%, rgba(139, 92, 246, 0.06) 100%);
  border-color: rgba(99, 102, 241, 0.2);
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  padding: 2.5rem;
  box-shadow: 0 15px 30px rgba(99, 102, 241, 0.06);
}

.post-cta h3 {
  margin: 0;
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--blog-text);
}

.post-cta p {
  margin: 0;
  max-width: 540px;
  color: var(--blog-muted);
  font-size: 1rem;
}

.post-cta .btn {
  margin-top: 0.5rem;
  background: var(--blog-primary);
  color: #fff !important;
  text-decoration: none;
  font-weight: 700;
  padding: 0.8rem 2rem;
  border-radius: 10px;
  transition: var(--transition);
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.2);
}

.post-cta .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
}

.related-links {
  margin: 1rem 0 0;
  padding-left: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.related-links li {
  position: relative;
  padding-left: 1.25rem;
  font-size: 0.95rem;
}

.related-links li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--blog-primary);
}

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

.related-links a:hover {
  color: var(--blog-primary);
}

@media (max-width: 768px) {
  .blog-main {
    padding-top: 7.5rem;
  }

  .blog-hero {
    margin-bottom: 2rem;
  }

  .post-content {
    padding: 2rem;
  }

  .author-box {
    flex-direction: column;
    text-align: center;
    padding: 1.5rem;
  }
}