/* ─────────────────────────────────────────────
   blog.css — Snapbook.ai Blog Styles
───────────────────────────────────────────── */

:root {
  --purple: #7B6FE8; --purple-light: #9D94F0;
  --teal: #5DCAA5;
  --navy: #0D0E1A; --navy-2: #13141F; --navy-3: #1E2035;
  --border: rgba(255,255,255,0.06);
  --border-accent: rgba(123,111,232,0.35);
  --text: #E8E9F0; --text-muted: #9CA3AF; --text-dim: #6B7280;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'DM Sans', sans-serif;
  background: var(--navy);
  color: var(--text);
  overflow-x: hidden;
  line-height: 1.6;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

/* ── BLOG HEADER ── */
.blog-header {
  text-align: center;
  padding: 72px 24px 56px;
  position: relative;
  overflow: hidden;
}
.blog-header-glow {
  position: absolute;
  top: -80px;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 500px;
  background: radial-gradient(ellipse, rgba(123,111,232,0.14) 0%, transparent 65%);
  pointer-events: none;
}
.blog-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--purple-light);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.blog-header h1 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
  line-height: 1.1;
}
.blog-header p {
  font-size: 15px;
  color: var(--text-muted);
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ── FILTERS ── */
.blog-filters {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px 40px;
}
.blog-search-wrap {
  position: relative;
  margin-bottom: 20px;
}
.blog-search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
  pointer-events: none;
}
#blog-search {
  width: 100%;
  background: var(--navy-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 13px 16px 13px 44px;
  font-family: 'DM Sans', sans-serif;
  font-size: 14px;
  color: var(--text);
  outline: none;
  transition: border-color 0.2s;
}
#blog-search::placeholder { color: var(--text-dim); }
#blog-search:focus { border-color: var(--border-accent); }

.blog-filter-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.blog-filter-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-dim);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-right: 4px;
}
.blog-tag-btn {
  font-family: 'DM Sans', sans-serif;
  font-size: 12px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 99px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}
.blog-tag-btn:hover { border-color: var(--border-accent); color: var(--text); }
.blog-tag-btn.active {
  background: rgba(123,111,232,0.12);
  border-color: var(--border-accent);
  color: var(--purple-light);
}
.blog-date-select {
  font-family: 'DM Sans', sans-serif;
  font-size: 12px;
  font-weight: 500;
  padding: 5px 32px 5px 12px;
  border-radius: 99px;
  border: 1px solid var(--border);
  background: var(--navy-2);
  color: var(--text-muted);
  cursor: pointer;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  transition: border-color 0.2s;
}
.blog-date-select:focus, .blog-date-select:hover { border-color: var(--border-accent); color: var(--text); }
.blog-date-select.active { border-color: var(--border-accent); color: var(--purple-light); background-color: rgba(123,111,232,0.08); }

/* ── MAIN CONTENT AREA ── */
.blog-content {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

/* ── FEATURED POST ── */
.featured-post {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 20px;
  overflow: hidden;
  margin-bottom: 56px;
  background: var(--navy-2);
  transition: border-color 0.2s, transform 0.2s;
  cursor: pointer;
}
.featured-post:hover { border-color: var(--border-accent); transform: translateY(-2px); }
.featured-post-image {
  background: linear-gradient(135deg, var(--navy-3) 0%, rgba(123,111,232,0.15) 100%);
  min-height: 300px;
  position: relative;
  overflow: hidden;
}
.featured-post-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
}
.featured-post-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  opacity: 0.3;
  position: absolute;
  inset: 0;
}
.featured-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 99px;
  background: rgba(93,202,165,0.15);
  border: 1px solid rgba(93,202,165,0.3);
  color: var(--teal);
}
.featured-post-body {
  padding: 40px 40px 36px;
  display: flex;
  flex-direction: column;
}
.featured-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.post-tag {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 99px;
  background: rgba(123,111,232,0.1);
  border: 1px solid rgba(123,111,232,0.2);
  color: var(--purple-light);
}
.featured-title {
  font-size: clamp(20px, 2.5vw, 26px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-bottom: 14px;
  color: var(--text);
}
.featured-excerpt {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 24px;
}
.post-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 12px;
  color: var(--text-dim);
}
.post-meta-dot { width: 3px; height: 3px; border-radius: 50%; background: var(--text-dim); }
.featured-read-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--purple-light);
  margin-top: 20px;
  transition: gap 0.2s;
}
.featured-read-link:hover { gap: 10px; }

/* ── POST GRID ── */
.posts-section-title {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 24px;
}
.posts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}
.post-card {
  background: var(--navy-2);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  cursor: pointer;
  transition: border-color 0.2s, transform 0.2s;
}
.post-card:hover { border-color: var(--border-accent); transform: translateY(-2px); }
.post-card-image {
  background: linear-gradient(135deg, var(--navy-3) 0%, rgba(123,111,232,0.12) 100%);
  height: 180px;
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}
.post-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.post-card-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  opacity: 0.25;
}
.post-card-body {
  padding: 20px 20px 18px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.post-card-tags { margin-bottom: 10px; display: flex; gap: 6px; flex-wrap: wrap; }
.post-card-title {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.35;
  margin-bottom: 10px;
  color: var(--text);
  flex: 1;
}
.post-card-excerpt {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.post-card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  color: var(--text-dim);
  margin-top: auto;
}

/* ── NO RESULTS ── */
.no-results {
  text-align: center;
  padding: 64px 24px;
  color: var(--text-muted);
}
.no-results-icon { font-size: 40px; margin-bottom: 16px; opacity: 0.4; }
.no-results h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; color: var(--text); }
.no-results p { font-size: 14px; line-height: 1.6; }

/* ── PAGINATION ── */
.blog-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.page-btn {
  font-family: 'DM Sans', sans-serif;
  font-size: 13px;
  font-weight: 600;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
}
.page-btn:hover { border-color: var(--border-accent); color: var(--text); }
.page-btn.active {
  background: rgba(123,111,232,0.15);
  border-color: var(--border-accent);
  color: var(--purple-light);
}
.page-btn:disabled { opacity: 0.3; cursor: not-allowed; }
.page-btn-text {
  width: auto;
  padding: 0 14px;
}

/* ════════════════════════════════════════════
   SINGLE POST PAGE
════════════════════════════════════════════ */

/* ── POST HERO ── */
.post-hero {
  max-width: 780px;
  margin: 0 auto;
  padding: 48px 24px 0;
}
.post-hero-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 20px; }
.post-hero h1 {
  font-size: clamp(26px, 3.5vw, 38px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 18px;
}
.post-hero-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 36px;
}
.post-hero-image {
  border-radius: 16px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--navy-3) 0%, rgba(123,111,232,0.18) 100%);
  min-height: 340px;
  position: relative;
}
.post-hero-image img {
  width: 100%;
  max-height: 460px;
  object-fit: cover;
  display: block;
}
.post-hero-image-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 340px;
  font-size: 64px;
  opacity: 0.2;
}

/* ── POST LAYOUT ── */
.post-layout {
  max-width: 1080px;
  margin: 0 auto;
  padding: 48px 24px 80px;
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 56px;
  align-items: start;
}

/* ── POST BODY ── */
.post-body {
  min-width: 0;
}
.post-content {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-muted);
}
.post-content h2 {
  font-size: clamp(20px, 2.5vw, 24px);
  font-weight: 700;
  color: var(--text);
  margin: 48px 0 16px;
  letter-spacing: -0.02em;
  line-height: 1.3;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}
.post-content h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  margin: 28px 0 12px;
  letter-spacing: -0.01em;
}
.post-content p {
  margin-bottom: 20px;
}
.post-content ul, .post-content ol {
  margin: 0 0 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.post-content li { line-height: 1.7; }
.post-content strong { color: var(--text); font-weight: 600; }
.post-content a { color: var(--teal); text-decoration: underline; text-decoration-color: rgba(93,202,165,0.3); }
.post-content a:hover { text-decoration-color: var(--teal); }
.post-content blockquote {
  border-left: 3px solid var(--purple);
  padding: 12px 20px;
  margin: 24px 0;
  background: rgba(123,111,232,0.06);
  border-radius: 0 8px 8px 0;
  font-style: italic;
  color: var(--text-muted);
}
.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}
.post-content th {
  background: var(--navy-3);
  padding: 10px 14px;
  text-align: left;
  font-weight: 600;
  color: var(--text);
  border-bottom: 1px solid var(--border);
}
.post-content td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text-muted);
}
.post-content tr:last-child td { border-bottom: none; }
.post-content ol { list-style-type: decimal; }

/* ── SHARE BAR ── */
.post-share {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.post-share-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 14px;
}
.share-btns { display: flex; gap: 10px; flex-wrap: wrap; }
.share-btn {
  font-family: 'DM Sans', sans-serif;
  font-size: 12px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--navy-2);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s;
  display: flex;
  align-items: center;
  gap: 7px;
}
.share-btn:hover { border-color: var(--border-accent); color: var(--text); }
.share-btn.copied { border-color: rgba(93,202,165,0.4); color: var(--teal); }

/* ── RELATED POSTS ── */
.related-posts {
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}
.related-title {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 24px;
}
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.related-card {
  background: var(--navy-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
  cursor: pointer;
  transition: border-color 0.2s;
}
.related-card:hover { border-color: var(--border-accent); }
.related-card-tag {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--purple-light);
  margin-bottom: 8px;
}
.related-card-title {
  font-size: 13px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text);
  margin-bottom: 8px;
}
.related-card-meta { font-size: 11px; color: var(--text-dim); }

/* ── SIDEBAR ── */
.post-sidebar { position: sticky; top: 80px; }

.toc-box {
  background: var(--navy-2);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  margin-bottom: 20px;
}
.toc-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 14px;
}
.toc-list { list-style: none; display: flex; flex-direction: column; gap: 4px; }
.toc-item a {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
  display: block;
  padding: 4px 0 4px 12px;
  border-left: 2px solid transparent;
  transition: all 0.15s;
}
.toc-item a:hover { color: var(--text); border-left-color: var(--purple); }
.toc-item.active a { color: var(--purple-light); border-left-color: var(--purple); }
.toc-item.h3 a { padding-left: 24px; font-size: 12px; }

.sidebar-cta {
  background: linear-gradient(135deg, rgba(123,111,232,0.12), rgba(93,202,165,0.06));
  border: 1px solid var(--border-accent);
  border-radius: 14px;
  padding: 22px;
  text-align: center;
}
.sidebar-cta-title { font-size: 14px; font-weight: 700; margin-bottom: 8px; color: var(--text); }
.sidebar-cta-desc { font-size: 12px; color: var(--text-muted); line-height: 1.6; margin-bottom: 16px; }
.sidebar-cta-btn {
  display: block;
  background: linear-gradient(135deg, var(--purple), #5B8CE8);
  color: white;
  padding: 10px 20px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 600;
  text-align: center;
  transition: opacity 0.2s, transform 0.2s;
}
.sidebar-cta-btn:hover { opacity: 0.9; transform: translateY(-1px); }

/* ── BACK BUTTON ── */
.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  padding: 8px 0;
  margin-bottom: 24px;
  transition: color 0.15s;
}
.back-btn:hover { color: var(--text); }

/* ── BOTTOM CTA BANNER ── */
.post-cta-banner {
  max-width: 1080px;
  margin: 0 auto 64px;
  padding: 0 24px;
}
.post-cta-inner {
  background: linear-gradient(135deg, rgba(123,111,232,0.12), rgba(93,202,165,0.06));
  border: 1px solid var(--border-accent);
  border-radius: 20px;
  padding: 48px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.post-cta-glow {
  position: absolute;
  top: -60px;
  left: 50%;
  transform: translateX(-50%);
  width: 500px;
  height: 300px;
  background: radial-gradient(ellipse, rgba(123,111,232,0.1) 0%, transparent 70%);
  pointer-events: none;
}
.post-cta-inner h2 {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
  position: relative;
}
.post-cta-inner p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 28px;
  max-width: 440px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
  position: relative;
}
.post-cta-btn {
  display: inline-block;
  background: linear-gradient(135deg, var(--purple), #5B8CE8);
  color: white;
  padding: 13px 32px;
  border-radius: 28px;
  font-size: 15px;
  font-weight: 600;
  box-shadow: 0 4px 20px rgba(123,111,232,0.35);
  transition: transform 0.2s, box-shadow 0.2s;
  position: relative;
}
.post-cta-btn:hover { transform: translateY(-1px); box-shadow: 0 6px 28px rgba(123,111,232,0.45); }

/* ── SKELETON LOADING ── */
@keyframes skeleton-shimmer {
  0%   { background-position: -600px 0; }
  100% { background-position:  600px 0; }
}
.skeleton-pulse {
  background: linear-gradient(90deg, var(--navy-3) 25%, var(--navy-2) 50%, var(--navy-3) 75%);
  background-size: 600px 100%;
  animation: skeleton-shimmer 1.4s infinite linear;
  border-radius: 8px;
}
.skeleton-card {
  pointer-events: none;
}
.skeleton-card .post-card-image {
  background: var(--navy-3);
}
.skeleton-card .post-card-image.skeleton-pulse {
  height: 180px;
}
.skeleton-featured {
  height: 340px;
  border-radius: 20px;
  margin-bottom: 56px;
  background: linear-gradient(90deg, var(--navy-3) 25%, var(--navy-2) 50%, var(--navy-3) 75%);
  background-size: 600px 100%;
  animation: skeleton-shimmer 1.4s infinite linear;
}

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .featured-post { grid-template-columns: 1fr; }
  .featured-post-image { min-height: 220px; }
  .posts-grid { grid-template-columns: repeat(2, 1fr); }
  .post-layout { grid-template-columns: 1fr; }
  .post-sidebar { display: none; }
  .related-grid { grid-template-columns: 1fr; }
  .post-hero { padding: 32px 20px 0; }
  .post-cta-inner { padding: 36px 24px; }
}
@media (max-width: 600px) {
  .posts-grid { grid-template-columns: 1fr; }
  .featured-post-body { padding: 24px 20px 20px; }
  .blog-filters { padding: 0 20px 28px; }
  .blog-content { padding: 0 20px 60px; }
  .related-grid { grid-template-columns: 1fr; gap: 12px; }
}