/**
 * RouteCostAI — Blog & Single Post styles
 * Uses theme design tokens defined in critical CSS (functions.php)
 */

/* ---------- Layout ---------- */
.blog-main { padding: 140px 0 80px; }
.single-main { padding: 120px 0 80px; }
.container-narrow { max-width: 880px; }

/* ---------- Blog / archive head ---------- */
.blog-head { max-width: 720px; margin: 0 auto 48px; text-align: center; }
.blog-head .section-label { justify-content: center; }
.blog-head .section-heading { margin-bottom: 16px; }
.blog-head-intro { font-size: 17px; line-height: 1.6; color: var(--text-secondary); }
.blog-head-intro p { margin: 0 0 10px; }
.blog-head-intro p:last-child { margin-bottom: 0; }

/* ---------- Cards grid ---------- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.blog-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.35s cubic-bezier(0.16,1,0.3,1), box-shadow 0.35s, border-color 0.35s;
}
.blog-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 40px rgba(21,42,61,0.10);
  border-color: var(--border-light);
}

.blog-card-media {
  position: relative;
  display: block;
  aspect-ratio: 16 / 10;
  background: var(--surface-alt);
  overflow: hidden;
}
.blog-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s cubic-bezier(0.16,1,0.3,1);
}
.blog-card:hover .blog-card-img { transform: scale(1.05); }

.blog-card-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  background:
    radial-gradient(circle at 30% 30%, rgba(254,96,45,0.10), transparent 60%),
    var(--surface-alt);
}

.blog-card-cat {
  position: absolute;
  top: 14px;
  left: 14px;
  background: var(--accent);
  color: var(--white);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  padding: 5px 11px;
  border-radius: 100px;
}

.blog-card-body { padding: 22px; display: flex; flex-direction: column; flex: 1; }

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  color: var(--text-muted);
  margin-bottom: 12px;
}
.blog-card-dot { opacity: 0.6; }

.blog-card-title {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin-bottom: 10px;
}
.blog-card-title a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.25s;
}
.blog-card-title a:hover { color: var(--accent); }

.blog-card-excerpt {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 18px;
  flex: 1;
}

.blog-card-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  align-self: flex-start;
}
.blog-card-link svg { transition: transform 0.3s; }
.blog-card-link:hover svg { transform: translateX(4px); }

/* ---------- Pagination ---------- */
.blog-pagination { margin-top: 56px; }
.blog-pagination .nav-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
}
.blog-pagination .page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  height: 42px;
  padding: 0 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.25s;
}
.blog-pagination .page-numbers:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.blog-pagination .page-numbers.current {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--white);
}
.blog-pagination .page-numbers.dots { border: none; background: none; }

/* ---------- Empty state ---------- */
.blog-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
  font-size: 16px;
}

/* ====================================================
   SINGLE POST
   ==================================================== */
.single-head { text-align: center; margin-bottom: 32px; }

.single-breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 22px;
}
.single-breadcrumb a { color: var(--text-secondary); text-decoration: none; transition: color 0.25s; }
.single-breadcrumb a:hover { color: var(--accent); }
.single-breadcrumb span { opacity: 0.5; }

.single-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--primary);
  margin-bottom: 24px;
}

.single-meta {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-align: left;
}
.single-meta-avatar { border-radius: 50%; display: block; }
.single-meta-text { display: flex; flex-direction: column; gap: 2px; }
.single-meta-author { font-size: 14px; font-weight: 600; color: var(--primary); }
.single-meta-sub {
  display: flex; align-items: center; gap: 7px;
  font-size: 13px; color: var(--text-muted);
}

.single-featured {
  margin: 8px 0 40px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border);
}
/* Editorial breakout: cover wider than the text column on desktop */
@media (min-width: 980px) {
  .single-featured { margin-inline: -80px; }
}
.single-featured-img { width: 100%; height: auto; display: block; }

/* ---------- Article content ---------- */
.single-content {
  font-size: 17px;
  line-height: 1.75;
  color: var(--text);
}
.single-content > * + * { margin-top: 1.3em; }
/* Stepped heading hierarchy. Double class (.single-content.entry-content)
   raises specificity so WP block heading styles can't flatten the sizes. */
.single-content.entry-content h2 {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--primary);
  margin-top: 1.8em;
  letter-spacing: -0.01em;
}
.single-content.entry-content h3 {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--primary);
  margin-top: 1.6em;
}
.single-content.entry-content h4 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--primary);
  margin-top: 1.4em;
}
.single-content.entry-content h5 {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-top: 1.3em;
}
.single-content.entry-content h6 {
  font-size: 13px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 1.2em;
}
.single-content a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.single-content a:hover { color: var(--accent-hover); }
.single-content ul, .single-content ol { padding-left: 1.4em; }
.single-content li { margin-top: 0.5em; }
.single-content li::marker { color: var(--accent); }
.single-content img { max-width: 100%; height: auto; border-radius: var(--radius-md); }
.single-content blockquote {
  border-left: 3px solid var(--accent);
  background: var(--surface-alt);
  padding: 18px 24px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: 18px;
  color: var(--primary);
  font-style: italic;
}
.single-content blockquote p { margin: 0; }
.single-content pre {
  background: var(--primary);
  color: #e9eef3;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  overflow-x: auto;
  font-size: 14px;
}
.single-content code {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  padding: 2px 6px;
  border-radius: 6px;
  font-size: 0.9em;
}
.single-content pre code { background: none; border: none; padding: 0; }
.single-content figure { margin: 0; }
.single-content figcaption { font-size: 13px; color: var(--text-muted); text-align: center; margin-top: 8px; }
.single-content table { width: 100%; border-collapse: collapse; font-size: 15px; }
.single-content th, .single-content td { border: 1px solid var(--border); padding: 10px 14px; text-align: left; }
.single-content th { background: var(--surface-alt); font-weight: 600; }

.single-pagelinks { margin-top: 24px; font-weight: 600; }
.single-pagelinks a { color: var(--accent); }

/* ---------- Table of contents ---------- */
.single-toc {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 6px 22px;
  margin-bottom: 36px;
}
.single-toc-head {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 14px 0;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.single-toc-head::-webkit-details-marker { display: none; }
.single-toc-chevron { color: var(--accent); transition: transform 0.3s; flex-shrink: 0; }
.single-toc[open] .single-toc-chevron { transform: rotate(180deg); }

/* Nested list — indentation reflects the real H2–H6 hierarchy.
   counters() builds the multi-level numbering: 2., 2.1., 2.1.1. … */
.single-toc-list,
.single-toc-list ul {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: toc;
}
.single-toc-list {
  padding: 4px 0 16px;
  border-top: 1px solid var(--border);
}
.single-toc-list ul {
  margin-left: 2px;
  padding-left: 13px;
  border-left: 1px solid var(--border);
}
.single-toc-list li { margin: 0; counter-increment: toc; }
.single-toc-list a {
  display: block;
  padding: 6px 0;
  font-size: 14px;
  line-height: 1.4;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s, padding 0.2s;
}
.single-toc-list a::before {
  content: counters(toc, ".") ". ";
  margin-right: 5px;
  color: var(--accent);
  font-weight: 700;
}
.single-toc-list a:hover { color: var(--accent); padding-left: 4px; }

/* Top-level (H2) items: slightly larger + emphasized */
.single-toc-list > li > a {
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
}

/* Offset anchored headings so the fixed header doesn't cover them */
.single-content h2,
.single-content h3,
.single-content h4,
.single-content h5,
.single-content h6 { scroll-margin-top: 100px; }

/* ---------- Tags ---------- */
.single-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 36px; }
.single-tag {
  font-size: 13px;
  color: var(--text-secondary);
  background: var(--surface-alt);
  border: 1px solid var(--border);
  padding: 6px 13px;
  border-radius: 100px;
  text-decoration: none;
  transition: all 0.25s;
}
.single-tag:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- CTA banner ---------- */
.single-cta {
  display: flex;
  align-items: center;
  gap: 18px;
  margin: 48px 0;
  padding: 24px 28px;
  background: var(--primary);
  border-radius: var(--radius-lg);
  color: var(--white);
}
.single-cta-icon {
  flex-shrink: 0;
  width: 48px; height: 48px;
  background: var(--accent);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
}
.single-cta-text { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.single-cta-text strong { font-size: 17px; font-weight: 700; }
.single-cta-text span { font-size: 14px; color: rgba(255,255,255,0.7); line-height: 1.5; }
.single-cta-btn {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: var(--white);
  font-size: 14px;
  font-weight: 700;
  padding: 12px 22px;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all 0.3s;
}
.single-cta-btn:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(254,96,45,0.35); }

/* ---------- Prev/next nav ---------- */
.single-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 48px;
  padding-top: 36px;
  border-top: 1px solid var(--border);
}
.single-nav-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  text-decoration: none;
  transition: all 0.3s;
}
.single-nav-item:hover { border-color: var(--accent); transform: translateY(-3px); box-shadow: 0 10px 24px rgba(21,42,61,0.08); }
.single-nav-next { text-align: right; align-items: flex-end; }
.single-nav-label { font-size: 12px; font-weight: 600; color: var(--accent); text-transform: uppercase; letter-spacing: 0.03em; }
.single-nav-title { font-size: 15px; font-weight: 600; color: var(--primary); line-height: 1.35; }

/* ---------- Related ---------- */
.single-related { margin-top: 80px; padding-top: 60px; border-top: 1px solid var(--border); }
.single-related .section-label { justify-content: flex-start; }
.single-related .section-heading { margin-bottom: 32px; }

/* ---------- Comments ---------- */
.single-comments { margin-top: 56px; padding-top: 40px; border-top: 1px solid var(--border); }
.single-comments .comment-list { list-style: none; padding: 0; margin: 0 0 32px; }
.single-comments .comment-list ul { list-style: none; padding-left: 28px; }
.single-comments .comment-body { padding: 18px 0; border-bottom: 1px solid var(--border-light); }
.single-comments .comment-author { font-weight: 600; color: var(--primary); }
.single-comments .comment-meta { font-size: 13px; color: var(--text-muted); margin-bottom: 8px; }
.single-comments .comment-reply-link { color: var(--accent); font-size: 13px; font-weight: 600; text-decoration: none; }
.single-comments input[type="text"],
.single-comments input[type="email"],
.single-comments input[type="url"],
.single-comments textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 15px;
  background: var(--surface);
  color: var(--text);
  margin-bottom: 14px;
}
.single-comments input:focus, .single-comments textarea:focus { outline: none; border-color: var(--accent); }
.single-comments .submit, .single-comments #submit {
  background: var(--accent);
  color: var(--white);
  border: none;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-family: var(--font);
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
  transition: all 0.3s;
}
.single-comments .submit:hover, .single-comments #submit:hover { background: var(--accent-hover); }
.single-comments .comment-respond { background: var(--surface-alt); padding: 28px; border-radius: var(--radius-lg); }
.single-comments .comment-reply-title { font-family: var(--font-display); font-size: 22px; font-weight: 700; color: var(--primary); margin-bottom: 18px; }

/* ---------- Search form ---------- */
.search-form { display: flex; gap: 10px; max-width: 480px; margin: 24px auto 0; }
.search-form .search-field {
  flex: 1;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-family: var(--font);
  font-size: 15px;
}
.search-form .search-field:focus { outline: none; border-color: var(--accent); }
.search-form .search-submit {
  background: var(--accent);
  color: var(--white);
  border: none;
  padding: 0 24px;
  border-radius: var(--radius-md);
  font-family: var(--font);
  font-weight: 700;
  cursor: pointer;
}

/* ====================================================
   RESPONSIVE
   ==================================================== */
@media (max-width: 900px) {
  .blog-grid { grid-template-columns: repeat(2, 1fr); gap: 22px; }
  .blog-main { padding: 120px 0 64px; }
}

@media (max-width: 640px) {
  .blog-grid { grid-template-columns: 1fr; gap: 20px; }
  .single-main { padding: 110px 0 56px; }
  .single-nav { grid-template-columns: 1fr; }
  .single-nav-next { text-align: left; align-items: flex-start; }
  .single-cta { flex-direction: column; text-align: center; align-items: stretch; }
  .single-cta-text { align-items: center; }
  .single-cta-btn { justify-content: center; }
}