/* ==========================================================================
   iFonetech — Blog Styles (Refined & Aligned)
   All blog-specific UI: listing page, single post page, components.
   Loaded AFTER site's styles.css — can safely override typography.
   ========================================================================== */

/* ─── Loading / State ────────────────────────────────────────────────────── */
.blog-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  min-height: 40vh;
  padding: 3rem 1rem;
  text-align: center;
  color: var(--color-muted-foreground);
}
.blog-state .spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: blog-spin 0.8s linear infinite;
}
@keyframes blog-spin { to { transform: rotate(360deg); } }

/* ─── Article Meta Row ───────────────────────────────────────────────────── */
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--color-muted-foreground);
}
.article-meta .dot {
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--color-border);
  flex-shrink: 0;
}
.category-pill {
  display: inline-flex;
  align-items: center;
  background: color-mix(in oklab, var(--color-primary) 12%, transparent);
  color: var(--color-primary);
  font-weight: 700;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.725rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: 1px solid color-mix(in oklab, var(--color-primary) 25%, transparent);
  transition: all 0.2s ease;
  line-height: 1;
}
.category-pill:hover,
.category-pill.active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

/* ─── Controls Bar: Search & Category Filters (Perfect Alignment) ───────── */
.controls-bar {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.cat-filters {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  overflow-x: auto;
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* IE/Edge */
  padding-bottom: 2px;
}
.cat-filters::-webkit-scrollbar { display: none; }

.cat-btn {
  height: 40px;
  padding: 0 1.125rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 600;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-muted-foreground);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.cat-btn:hover { border-color: var(--color-primary); color: var(--color-primary); }
.cat-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  box-shadow: 0 2px 12px color-mix(in oklab, var(--color-primary) 35%, transparent);
}

.blog-search-wrap {
  position: relative;
  width: 100%;
}
@media (min-width: 768px) {
  .blog-search-wrap { max-width: 320px; }
}
.blog-search-wrap svg {
  position: absolute;
  left: 0.875rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1.125rem; height: 1.125rem;
  color: var(--color-muted-foreground);
  pointer-events: none;
  transition: color 0.2s ease;
}
#blog-search {
  width: 100%;
  height: 40px;
  padding: 0 1rem 0 2.6rem;
  border: 1px solid var(--color-border);
  border-radius: 9999px;
  background: var(--color-surface);
  color: var(--color-foreground);
  font-size: 0.875rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
#blog-search:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--color-primary) 18%, transparent);
}
#blog-search:focus + svg,
.blog-search-wrap:focus-within svg {
  color: var(--color-primary);
}
#blog-search::placeholder { color: var(--color-muted-foreground); }

/* ─── Featured Hero Post Card ───────────────────────────────────────────── */
.featured-post-card {
  display: grid;
  grid-template-columns: 1fr;
  border-radius: 1.25rem;
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  transition: transform 0.3s cubic-bezier(0.22,1,0.36,1), box-shadow 0.3s, border-color 0.2s;
  text-decoration: none;
  color: inherit;
}
.featured-post-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.4);
  border-color: color-mix(in oklab, var(--color-primary) 30%, var(--color-border));
}
@media (min-width: 768px) {
  .featured-post-card { grid-template-columns: 1.1fr 1fr; }
}
.featured-post-img-wrap {
  position: relative;
  overflow: hidden;
  min-height: 240px;
}
@media (min-width: 768px) {
  .featured-post-img-wrap { min-height: 360px; height: 100%; }
}
.featured-post-img-wrap img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.22,1,0.36,1);
}
.featured-post-card:hover .featured-post-img-wrap img { transform: scale(1.05); }

.featured-badge-tag {
  position: absolute;
  top: 1.25rem; left: 1.25rem;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.3rem 0.75rem;
  border-radius: 9999px;
  display: inline-flex; align-items: center; gap: 0.4rem;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  z-index: 2;
}

.featured-post-content {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
@media (min-width: 1024px) {
  .featured-post-content { padding: 2.75rem 2.5rem; }
}
.featured-post-content h2 {
  font-family: "Sora", system-ui, sans-serif;
  font-size: clamp(1.35rem, 2.5vw, 1.85rem);
  font-weight: 800;
  line-height: 1.25;
  margin-top: 1rem;
  color: var(--color-foreground);
  transition: color 0.2s ease;
}
.featured-post-card:hover .featured-post-content h2 { color: var(--color-primary); }
.featured-post-content p {
  margin-top: 0.85rem;
  font-size: 0.9375rem;
  color: var(--color-muted-foreground);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.featured-read-link {
  margin-top: 1.75rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-primary);
}
.featured-read-link svg { transition: transform 0.2s ease; }
.featured-post-card:hover .featured-read-link svg { transform: translateX(5px); }

/* ─── Standard Post Card Grid ───────────────────────────────────────────── */
.post-card-link {
  text-decoration: none;
  display: flex;
  flex-direction: column;
  height: 100%;
}
.post-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 1rem;
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s cubic-bezier(0.22,1,0.36,1), box-shadow 0.3s, border-color 0.2s;
}
.post-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.35);
  border-color: color-mix(in oklab, var(--color-primary) 30%, var(--color-border));
}
.post-card-img {
  aspect-ratio: 16/9;
  overflow: hidden;
  position: relative;
  flex-shrink: 0;
  border-bottom: 1px solid var(--color-border);
}
.post-card-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.22,1,0.36,1);
}
.post-card:hover .post-card-img img { transform: scale(1.07); }
.post-card-img-placeholder {
  aspect-ratio: 16/9;
  background: var(--color-accent);
  display: grid;
  place-items: center;
  color: var(--color-muted-foreground);
  border-bottom: 1px solid var(--color-border);
}
.post-card-body {
  padding: 1.25rem 1.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.post-card-body h3 {
  font-family: "Sora", system-ui, sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.35;
  margin-top: 0.75rem;
  color: var(--color-foreground);
  transition: color 0.2s ease;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.post-card:hover .post-card-body h3 { color: var(--color-primary); }
.post-card-excerpt {
  margin-top: 0.6rem;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-muted-foreground);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}
.post-card-footer {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}
.post-read-link {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}
.post-read-link svg { transition: transform 0.2s ease; }
.post-card:hover .post-read-link svg { transform: translateX(3px); }
.post-card-author {
  font-size: 0.75rem;
  color: var(--color-muted-foreground);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 110px;
}

/* ─── No Results State ─────────────────────────────────────────────────── */
#blog-no-results {
  display: none;
  flex-direction: column;
  align-items: center;
  padding: 4rem 1rem;
  text-align: center;
  gap: 1rem;
  color: var(--color-muted-foreground);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 1.25rem;
}
#blog-no-results.visible { display: flex; }

/* ─── Load More & Page Info ─────────────────────────────────────────────── */
#load-more-wrap {
  display: none;
  text-align: center;
  margin-top: 3rem;
}
#load-more-wrap.visible { display: block; }
.blog-page-info {
  font-size: 0.8125rem;
  color: var(--color-muted-foreground);
  text-align: center;
}

/* ==========================================================================
   POST PAGE
   ========================================================================== */

/* Reading progress bar at top */
#read-progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(to right, var(--color-primary), oklch(65% 0.25 20));
  z-index: 9999;
  transition: width 0.1s linear;
}

/* Post hero image */
.post-hero-img {
  width: 100%;
  max-height: 480px;
  object-fit: cover;
  border-radius: 1rem;
  border: 1px solid var(--color-border);
  margin: 2rem 0;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

/* Article layout: content + sidebar */
.post-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: start;
}
@media (min-width: 1024px) {
  .post-layout { grid-template-columns: 1fr 280px; }
}

/* Sticky sidebar */
.post-sidebar {
  position: sticky;
  top: 6rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
@media (max-width: 1023px) {
  .post-sidebar { display: none; }
}

/* Table of Contents */
.toc-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 0.875rem;
  padding: 1.25rem 1.5rem;
}
.toc-title {
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted-foreground);
  margin-bottom: 0.875rem;
}
.toc-list {
  list-style: none;
  padding: 0; margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}
.toc-list a {
  display: block;
  font-size: 0.8rem;
  color: var(--color-muted-foreground);
  padding: 0.3rem 0.5rem;
  border-radius: 0.375rem;
  border-left: 2px solid transparent;
  text-decoration: none;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
  line-height: 1.4;
}
.toc-list a:hover { color: var(--color-foreground); background: var(--color-accent); }
.toc-list a.toc-active {
  color: var(--color-primary);
  border-left-color: var(--color-primary);
  background: color-mix(in oklab, var(--color-primary) 8%, transparent);
  font-weight: 600;
}
.toc-list li.toc-h3 a { padding-left: 1.25rem; font-size: 0.75rem; }

/* Share Card */
.share-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 0.875rem;
  padding: 1.25rem 1.5rem;
}
.share-card-title {
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted-foreground);
  margin-bottom: 0.875rem;
}
.share-btns {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.share-btn {
  display: inline-grid;
  place-items: center;
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  color: var(--color-muted-foreground);
  background: var(--color-surface);
  transition: all 0.2s;
  cursor: pointer;
  text-decoration: none;
}
.share-btn:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px color-mix(in oklab, var(--color-primary) 25%, transparent);
}
.share-btn[data-copied="1"] { color: #22c55e; border-color: #22c55e; }

/* CTA sidebar card */
.cta-card {
  background: linear-gradient(135deg,
    color-mix(in oklab, var(--color-primary) 12%, var(--color-surface)),
    var(--color-surface));
  border: 1px solid color-mix(in oklab, var(--color-primary) 25%, var(--color-border));
  border-radius: 0.875rem;
  padding: 1.5rem;
  text-align: center;
}
.cta-card h3 { font-size: 1rem; font-weight: 800; }
.cta-card p { font-size: 0.8125rem; color: var(--color-muted-foreground); margin-top: 0.5rem; line-height: 1.5; }
.cta-card a { margin-top: 1rem; display: block; }

/* ─── Article Prose ──────────────────────────────────────────────────────── */
.pt-content {
  font-family: "Manrope", system-ui, sans-serif;
  color: var(--color-muted-foreground);
  font-size: 1.0625rem;
  line-height: 1.8;
}
.pt-content > * + * { margin-top: 1.25em; }

.pt-content .pt-h1,
.pt-content .pt-h2,
.pt-content .pt-h3,
.pt-content .pt-h4 {
  font-family: "Sora", system-ui, sans-serif;
  color: var(--color-foreground);
  font-weight: 700;
  line-height: 1.2;
  scroll-margin-top: 7rem;
}
.pt-content .pt-h1 { font-size: clamp(1.9rem, 4vw, 2.4rem); margin-top: 2.5rem; }
.pt-content .pt-h2 {
  font-size: clamp(1.4rem, 3vw, 1.75rem);
  margin-top: 2.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-border);
}
.pt-content .pt-h3 { font-size: 1.2rem; margin-top: 2rem; }
.pt-content .pt-h4 { font-size: 1rem; margin-top: 1.75rem; }
.pt-content .pt-p { margin: 0 0 1em; }

.pt-content a {
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  text-decoration-color: color-mix(in oklab, var(--color-primary) 40%, transparent);
  transition: color 0.2s, text-decoration-color 0.2s;
}
.pt-content a:hover {
  color: color-mix(in oklab, var(--color-primary) 80%, black);
  text-decoration-color: var(--color-primary);
}

.pt-content .pt-ul,
.pt-content .pt-ol {
  margin: 1.1em 0;
  padding-left: 1.5rem;
}
.pt-content .pt-ul li { list-style: disc; margin: 0.5em 0; }
.pt-content .pt-ol li { list-style: decimal; margin: 0.5em 0; }
.pt-content li::marker { color: var(--color-primary); }

.pt-content .pt-quote {
  border-left: 4px solid var(--color-primary);
  background: color-mix(in oklab, var(--color-primary) 6%, var(--color-surface));
  padding: 1.25rem 1.5rem;
  margin: 1.75em 0;
  border-radius: 0 1rem 1rem 0;
  font-style: italic;
  font-size: 1.05rem;
  color: var(--color-foreground);
}
.pt-content .pt-quote p { margin: 0.3em 0; }

.pt-content code {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.875em;
  background: var(--color-accent);
  color: var(--color-foreground);
  padding: 0.15em 0.45em;
  border-radius: 5px;
}
.pt-content hr {
  border: 0;
  height: 1px;
  background: var(--color-border);
  margin: 2.5rem 0;
}

/* ─── Author Box ─────────────────────────────────────────────────────────── */
.author-box {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 1rem;
  margin-top: 3rem;
}
.author-avatar {
  width: 52px; height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), oklch(65% 0.25 20));
  display: grid;
  place-items: center;
  font-size: 1.25rem;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
}
.author-name { font-size: 0.9375rem; font-weight: 700; }
.author-role { font-size: 0.8125rem; color: var(--color-muted-foreground); margin-top: 0.15rem; }

/* ─── Related Posts ──────────────────────────────────────────────────────── */
.related-posts-section { margin-top: 4rem; }
.related-posts-title {
  font-family: "Sora", system-ui, sans-serif;
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--color-border);
}
.related-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
@media (min-width: 640px) {
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .related-grid { grid-template-columns: repeat(3, 1fr); }
}
.related-card {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  text-decoration: none;
  color: inherit;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 0.75rem;
  overflow: hidden;
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.2s;
}
.related-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(0,0,0,0.28);
  border-color: color-mix(in oklab, var(--color-primary) 30%, var(--color-border));
}
.related-card-img {
  aspect-ratio: 16/7;
  overflow: hidden;
}
.related-card-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.related-card:hover .related-card-img img { transform: scale(1.06); }
.related-card-body { padding: 1rem 1rem 1.25rem; }
.related-card-body h4 {
  font-family: "Sora", system-ui, sans-serif;
  font-size: 0.9375rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-foreground);
  transition: color 0.2s;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card:hover .related-card-body h4 { color: var(--color-primary); }
.related-card-body .article-meta { margin-top: 0.5rem; }

/* ─── Back to Blog ───────────────────────────────────────────────────────── */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-muted-foreground);
  text-decoration: none;
  transition: color 0.2s;
}
.back-link:hover { color: var(--color-primary); }
.back-link svg { transition: transform 0.2s; }
.back-link:hover svg { transform: translateX(-3px); }

/* ─── Post page image ────────────────────────────────────────────────────── */
.article-cover {
  width: 100%;
  aspect-ratio: 16/7;
  object-fit: cover;
  border-radius: 1rem;
  border: 1px solid var(--color-border);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
  margin-bottom: 2rem;
}

/* ─── Share row (inline) ─────────────────────────────────────────────────── */
.share-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  flex-wrap: wrap;
}
.share-label {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-foreground);
  margin-right: 0.5rem;
}

/* ─── Main site blog preview section ────────────────────────────────────── */
.home-blog-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 1rem;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: transform 0.3s cubic-bezier(0.22,1,0.36,1), box-shadow 0.3s, border-color 0.2s;
  text-decoration: none;
  color: inherit;
}
.home-blog-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.35);
  border-color: color-mix(in oklab, var(--color-primary) 30%, var(--color-border));
}
.home-blog-card-img {
  aspect-ratio: 16/9;
  overflow: hidden;
}
.home-blog-card-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.22,1,0.36,1);
}
.home-blog-card:hover .home-blog-card-img img { transform: scale(1.07); }
.home-blog-card-img-placeholder {
  aspect-ratio: 16/9;
  background: var(--color-accent);
  display: grid;
  place-items: center;
}
.home-blog-card-body {
  padding: 1.25rem 1.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.home-blog-card-body h3 {
  font-family: "Sora", system-ui, sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.35;
  margin-top: 0.6rem;
  color: var(--color-foreground);
  transition: color 0.2s;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.home-blog-card:hover .home-blog-card-body h3 { color: var(--color-primary); }
.home-blog-card-body p {
  margin-top: 0.6rem;
  font-size: 0.875rem;
  color: var(--color-muted-foreground);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}
.home-blog-read {
  margin-top: 1rem;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}
.home-blog-read svg { transition: transform 0.2s; }
.home-blog-card:hover .home-blog-read svg { transform: translateX(3px); }