/* ================================================================
   BLOG SINGLE POST CSS v4.0 — Matches single-dlk_blog.php exactly
   ================================================================ */

/* ----------------------------------------------------------------
   HERO
   ---------------------------------------------------------------- */
.sp-hero {
  padding: calc(var(--nav-h) + 48px) 0 52px;
  background: linear-gradient(150deg, #1e3a8a 0%, var(--primary) 55%, #2563eb 100%);
  position: relative;
  background-size: cover;
  background-position: center top;
}
.sp-hero.has-image { background-color: #0b1525; }
.sp-hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(160deg, rgba(11,37,69,0.88) 0%, rgba(15,50,100,0.78) 100%);
}
.sp-hero-inner {
  position: relative; z-index: 1;
  max-width: 820px;
}

.sp-breadcrumb {
  display: flex; align-items: center; gap: 7px;
  font-size: 0.77rem; color: rgba(255,255,255,0.50);
  margin-bottom: 18px; font-family: var(--font-sans);
  flex-wrap: wrap;
}
.sp-breadcrumb a       { color: var(--secondary); }
.sp-breadcrumb a:hover { color: #fff; text-decoration: underline; }
.sp-breadcrumb i       { font-size: 0.55rem; color: rgba(255,255,255,0.25); }

.sp-cat {
  display: inline-flex;
  background: rgba(20,184,166,0.20);
  border: 1px solid rgba(20,184,166,0.35);
  color: #5eead4;
  padding: 4px 14px; border-radius: 4px;
  font-size: 0.70rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.09em;
  margin-bottom: 14px; font-family: var(--font-sans);
}

.sp-title {
  font-size: clamp(1.65rem, 3.5vw, 2.75rem);
  color: #fff; line-height: 1.22; margin-bottom: 20px;
}

.sp-meta {
  display: flex; align-items: center;
  flex-wrap: wrap; gap: 6px 22px;
  font-size: 0.82rem; color: rgba(255,255,255,0.58);
  font-family: var(--font-sans);
}
.sp-meta span { display: flex; align-items: center; gap: 6px; }
.sp-meta i    { color: rgba(20,184,166,0.75); font-size: 0.78rem; }

/* ----------------------------------------------------------------
   BODY — two column
   ---------------------------------------------------------------- */
.sp-body { background: var(--bg); padding: 52px 0 80px; }

.sp-grid {
  display: grid;
  grid-template-columns: 1fr 292px;
  gap: 44px;
  align-items: start;
}

/* ----------------------------------------------------------------
   ARTICLE
   ---------------------------------------------------------------- */
.sp-article {}

.sp-cover {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 36px;
  box-shadow: var(--shadow-md);
}
.sp-cover img {
  width: 100%; aspect-ratio: 16/8;
  object-fit: cover; display: block;
}

/* Content typography */
.sp-content {
  font-size: 1.02rem;
  color: var(--text-mid);
  line-height: 1.88;
}
.sp-content > * + * { margin-top: 1.1em; }
.sp-content h2 {
  font-size: 1.5rem; color: var(--text-dark);
  margin-top: 2.4em; margin-bottom: 0.6em;
  padding-bottom: 10px; border-bottom: 2px solid var(--border);
}
.sp-content h3 {
  font-size: 1.22rem; color: var(--text-dark);
  margin-top: 1.8em; margin-bottom: 0.5em;
}
.sp-content h4 {
  font-size: 1.07rem; color: var(--text-dark);
  margin-top: 1.5em; margin-bottom: 0.4em;
}
.sp-content p   { margin-bottom: 1.2em; }
.sp-content ul,
.sp-content ol  { padding-left: 26px; margin-bottom: 1.2em; }
.sp-content li  { margin-bottom: 0.4em; }
.sp-content strong { color: var(--text-dark); font-weight: 700; }
.sp-content em     { font-style: italic; }
.sp-content a      { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.sp-content a:hover{ color: var(--primary-dark); }
.sp-content blockquote {
  background: var(--primary-pale);
  border-left: 4px solid var(--primary);
  padding: 18px 22px 18px 24px;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 1.6em 0;
  font-style: italic; color: var(--text-mid);
}
.sp-content blockquote > * { margin: 0; }
.sp-content img {
  border-radius: var(--radius); max-width: 100%;
  height: auto; box-shadow: var(--shadow-sm);
  margin: 1.4em auto; display: block;
}
.sp-content figure { margin: 1.6em 0; }
.sp-content figcaption {
  text-align: center; font-size: 0.82rem;
  color: var(--text-light); font-style: italic;
  margin-top: 8px; font-family: var(--font-sans);
}
.sp-content code {
  background: var(--bg); border: 1px solid var(--border);
  padding: 2px 7px; border-radius: 4px;
  font-family: 'Courier New', monospace; font-size: 0.87em;
  color: var(--text-dark);
}
.sp-content pre {
  background: #0f172a; color: rgba(255,255,255,0.88);
  padding: 20px 24px; border-radius: var(--radius);
  overflow-x: auto; margin: 1.6em 0; font-size: 0.87rem;
}
.sp-content pre code { background: none; border: none; padding: 0; color: inherit; font-size: 1em; }
.sp-content hr  { border: none; border-top: 2px solid var(--border); margin: 2.4em 0; }
.sp-content table { width: 100%; border-collapse: collapse; margin: 1.6em 0; font-size: 0.9rem; }
.sp-content th  { background: var(--primary); color: #fff; padding: 10px 14px; text-align: left; font-family: var(--font-sans); font-size: 0.80rem; font-weight: 600; }
.sp-content td  { padding: 10px 14px; border-bottom: 1px solid var(--border); color: var(--text-mid); }
.sp-content tr:nth-child(even) td { background: var(--bg); }

/* Tags */
.sp-tags {
  display: flex; align-items: center; flex-wrap: wrap; gap: 7px;
  margin-top: 40px; padding-top: 24px;
  border-top: 2px solid var(--border);
}
.sp-tags-label {
  font-size: 0.72rem; font-weight: 700; color: var(--text-light);
  text-transform: uppercase; letter-spacing: 0.09em;
  font-family: var(--font-sans); margin-right: 4px;
}
.sp-tag {
  display: inline-block;
  background: var(--bg-white); color: var(--text-mid);
  border: 1px solid var(--border);
  padding: 4px 12px; border-radius: 4px;
  font-size: 0.79rem; font-weight: 500;
  transition: var(--transition); font-family: var(--font-sans);
}
.sp-tag:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* Share row */
.sp-share {
  margin-top: 24px; padding: 18px 22px;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex; align-items: center;
  flex-wrap: wrap; gap: 10px;
}
.sp-share-label {
  font-size: 0.72rem; font-weight: 700; color: var(--text-light);
  text-transform: uppercase; letter-spacing: 0.09em;
  font-family: var(--font-sans); flex-shrink: 0;
}
.sp-share-btns {
  display: flex; flex-wrap: wrap; gap: 8px;
}
.sp-share-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 15px; border-radius: 6px;
  font-size: 0.80rem; font-weight: 600;
  cursor: pointer; border: none;
  font-family: var(--font-sans);
  white-space: nowrap; line-height: 1;
  transition: var(--transition);
}
.sp-share-btn.tw { background: #e8f4fd; color: #1d9bf0; }
.sp-share-btn.fb { background: #e8effc; color: #1877f2; }
.sp-share-btn.li { background: #e8f1f9; color: #0a66c2; }
.sp-share-btn.wa { background: #e8f8ef; color: #128c7e; }
.sp-share-btn.cp { background: var(--bg); color: var(--text-mid); border: 1px solid var(--border); }
.sp-share-btn.tw:hover { background: #1d9bf0; color: #fff; }
.sp-share-btn.fb:hover { background: #1877f2; color: #fff; }
.sp-share-btn.li:hover { background: #0a66c2; color: #fff; }
.sp-share-btn.wa:hover { background: #128c7e; color: #fff; }
.sp-share-btn.cp:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* Author card */
.sp-author {
  display: flex; gap: 20px; align-items: flex-start;
  margin-top: 28px; padding: 26px;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
}
.sp-author-img {
  width: 80px; height: 80px; border-radius: 50%;
  object-fit: cover; object-position: top center;
  flex-shrink: 0; border: 3px solid var(--border);
}
.sp-author-body { flex: 1; min-width: 0; }
.sp-author-name { font-family: var(--font-serif); font-size: 1.05rem; color: var(--text-dark); font-weight: 700; margin-bottom: 3px; }
.sp-author-role { font-size: 0.79rem; color: var(--primary); font-weight: 600; margin-bottom: 8px; font-family: var(--font-sans); }
.sp-author-bio  { font-size: 0.86rem; color: var(--text-mid); line-height: 1.65; margin-bottom: 12px; }
.sp-author-socials { display: flex; gap: 8px; }
.sp-author-socials a {
  width: 32px; height: 32px; border-radius: 6px;
  background: var(--bg); border: 1px solid var(--border);
  color: var(--text-mid); display: flex; align-items: center; justify-content: center;
  font-size: 0.82rem; transition: var(--transition);
}
.sp-author-socials a:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* Related — mobile version (below article) */
.sp-related-mobile { display: none; margin-top: 32px; }
.sp-related-title  { font-size: 1.1rem; color: var(--text-dark); margin-bottom: 18px; }
.sp-related-grid   { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.sp-related-card   {
  display: block; background: var(--bg-white);
  border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: var(--transition);
}
.sp-related-card:hover  { box-shadow: var(--shadow-md); }
.sp-related-card img    { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.sp-related-info        { padding: 12px; }
.sp-related-info h4     { font-size: 0.85rem; color: var(--text-dark); line-height: 1.35; margin-bottom: 4px; }
.sp-related-info span   { font-size: 0.74rem; color: var(--text-light); font-family: var(--font-sans); }

/* ----------------------------------------------------------------
   SIDEBAR
   ---------------------------------------------------------------- */
.sp-sidebar { position: sticky; top: calc(var(--nav-h) + 22px); }

.sp-widget {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-xs);
}
.sp-widget-title {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.72rem; font-weight: 700; color: var(--text-dark);
  text-transform: uppercase; letter-spacing: 0.10em;
  margin-bottom: 16px; padding-bottom: 12px;
  border-bottom: 2px solid var(--border);
  font-family: var(--font-sans);
}
.sp-widget-title i { color: var(--primary); }

/* TOC */
.sp-toc { display: flex; flex-direction: column; gap: 2px; }
.sp-toc-link {
  display: block; /* IMPORTANT — must be block not inline */
  font-size: 0.83rem; color: var(--text-mid);
  padding: 7px 11px; border-radius: 5px;
  border-left: 2px solid var(--border);
  transition: var(--transition);
  font-family: var(--font-sans);
  line-height: 1.4;
  text-decoration: none;
}
.sp-toc-link.sub  { padding-left: 20px; font-size: 0.79rem; color: var(--text-light); }
.sp-toc-link:hover,
.sp-toc-link.active { color: var(--primary); border-left-color: var(--primary); background: var(--primary-pale); }

/* Author sidebar widget */
.sp-widget-author { text-align: center; }
.sp-wa-img {
  width: 72px; height: 72px; border-radius: 50%;
  object-fit: cover; object-position: top center;
  margin: 0 auto 12px; border: 3px solid var(--border); display: block;
}
.sp-wa-name  { font-family: var(--font-serif); font-size: 0.97rem; color: var(--text-dark); font-weight: 700; margin-bottom: 3px; }
.sp-wa-role  { font-size: 0.75rem; color: var(--primary); font-weight: 600; margin-bottom: 4px; font-family: var(--font-sans); }
.sp-wa-title { font-size: 0.81rem; color: var(--text-light); margin-bottom: 14px; line-height: 1.5; }
.sp-widget-author .btn-outline { display: inline-flex; }

/* Related posts — desktop sidebar */
.sp-related-desktop { display: block; }
.sp-rel-item {
  display: flex; gap: 11px; align-items: center;
  padding: 10px 0; border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.sp-rel-item:last-child { border-bottom: none; padding-bottom: 0; }
.sp-rel-img  { width: 60px; height: 50px; border-radius: 6px; object-fit: cover; flex-shrink: 0; }
.sp-rel-body h5 { font-size: 0.83rem; color: var(--text-dark); line-height: 1.35; margin-bottom: 3px; transition: var(--transition); }
.sp-rel-item:hover .sp-rel-body h5 { color: var(--primary); }
.sp-rel-body span { font-size: 0.74rem; color: var(--text-light); font-family: var(--font-sans); }

/* ----------------------------------------------------------------
   RESPONSIVE
   ---------------------------------------------------------------- */
@media (max-width: 1024px) {
  .sp-grid { grid-template-columns: 1fr; gap: 36px; }
  .sp-sidebar { position: static; }
  .sp-related-desktop { display: none; }
  .sp-related-mobile  { display: block; }
}
@media (max-width: 640px) {
  .sp-hero { padding: calc(var(--nav-h) + 32px) 0 36px; }
  .sp-title { font-size: 1.55rem; }
  .sp-author { flex-direction: column; gap: 14px; }
  .sp-author-img { width: 64px; height: 64px; }
  .sp-share { flex-direction: column; align-items: flex-start; }
  .sp-related-grid { grid-template-columns: 1fr; }
  .sp-cover img { aspect-ratio: 16/9; }
}