/* ==========================================================================
   Insights Grid & Article Page Styles
   Colors: primary #111111, accent #0E6BA8, dark #0A0A0A, light #F5F5F7
   ========================================================================== */

/* ---------- Category badge colors ---------- */
.badge-ma        { background: #166534; color: #bbf7d0; }
.badge-startup   { background: #9a3412; color: #fed7aa; }
.badge-sales     { background: #1e40af; color: #bfdbfe; }
.badge-strategy  { background: #0f766e; color: #99f6e4; }
.badge-ai        { background: #7e22ce; color: #e9d5ff; }
.badge-external  { background: #374151; color: #d1d5db; }

.category-badge {
  display: inline-block;
  padding: 0.2rem 0.65rem;
  border-radius: 9999px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  line-height: 1.4;
}

/* ---------- Insights grid ---------- */
.insights-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}
@media (min-width: 640px)  { .insights-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .insights-grid { grid-template-columns: repeat(3, 1fr); } }

/* ---------- Article card ---------- */
.article-card {
  background: #1a1a2e;
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 0.75rem;
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  display: flex;
  flex-direction: column;
}
.article-card:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: 0 12px 40px rgba(14, 107, 168, 0.15);
  border-color: rgba(14, 107, 168, 0.3);
}
.article-card-body {
  padding: 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.article-card-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}
.article-card-date {
  font-size: 0.75rem;
  color: #94a3b8;
}
.article-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #f1f5f9;
  line-height: 1.4;
  margin-bottom: 0.5rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-card-desc {
  font-size: 0.85rem;
  color: #94a3b8;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}
.article-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.article-card-read-time {
  font-size: 0.75rem;
  color: #64748b;
}
.article-card-link {
  font-size: 0.8rem;
  font-weight: 600;
  color: #0E6BA8;
  text-decoration: none;
  transition: color 0.2s;
}
.article-card-link:hover { color: #3b82f6; }

/* ---------- Filter bar ---------- */
.insights-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}
.filter-pill {
  padding: 0.45rem 1rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 600;
  background: rgba(255,255,255,0.06);
  color: #94a3b8;
  border: 1px solid rgba(255,255,255,0.1);
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.filter-pill:hover {
  background: rgba(14, 107, 168, 0.15);
  color: #e2e8f0;
  border-color: rgba(14, 107, 168, 0.3);
}
.filter-pill.active {
  background: #0E6BA8;
  color: #fff;
  border-color: #0E6BA8;
}

/* ---------- Search bar ---------- */
.insights-search {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.75rem;
  border-radius: 0.5rem;
  border: 1px solid rgba(255,255,255,0.1);
  background: rgba(255,255,255,0.04);
  color: #f1f5f9;
  font-size: 0.9rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.insights-search::placeholder { color: #64748b; }
.insights-search:focus {
  outline: none;
  border-color: #0E6BA8;
  box-shadow: 0 0 0 3px rgba(14, 107, 168, 0.2);
}
.insights-search-wrap {
  position: relative;
  margin-bottom: 1.25rem;
}
.insights-search-icon {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: #64748b;
  font-size: 0.9rem;
  pointer-events: none;
}

/* ---------- Sort dropdown ---------- */
.insights-sort {
  padding: 0.45rem 0.75rem;
  border-radius: 0.5rem;
  border: 1px solid rgba(255,255,255,0.1);
  background: rgba(255,255,255,0.04);
  color: #e2e8f0;
  font-size: 0.8rem;
  cursor: pointer;
}
.insights-sort:focus { outline: none; border-color: #0E6BA8; }
.insights-sort option { background: #111; color: #e2e8f0; }

/* ---------- Load More button ---------- */
.load-more-btn {
  display: block;
  margin: 2rem auto 0;
  padding: 0.75rem 2rem;
  border-radius: 9999px;
  border: 2px solid #0E6BA8;
  background: transparent;
  color: #0E6BA8;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s ease;
}
.load-more-btn:hover {
  background: #0E6BA8;
  color: #fff;
}
.load-more-btn:disabled {
  opacity: 0.4;
  cursor: default;
}

/* ---------- Article count ---------- */
.insights-count {
  font-size: 0.8rem;
  color: #64748b;
  margin-bottom: 1rem;
}

/* ==========================================================================
   Individual Article Page
   ========================================================================== */

/* ---------- Article layout ---------- */
.article-page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
@media (min-width: 1024px) {
  .article-page {
    grid-template-columns: 1fr 260px;
    padding: 3rem 2rem;
  }
}

.article-content {
  max-width: 720px;
  width: 100%;
}

/* ---------- Breadcrumb ---------- */
.article-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
  color: #64748b;
  margin-bottom: 1.5rem;
}
.article-breadcrumb a {
  color: #94a3b8;
  text-decoration: none;
  transition: color 0.2s;
}
.article-breadcrumb a:hover { color: #0E6BA8; }
.article-breadcrumb .sep { color: #475569; }

/* ---------- Article header ---------- */
.article-header { margin-bottom: 2rem; }
.article-header h1 {
  font-size: 2rem;
  font-weight: 800;
  color: #f1f5f9;
  line-height: 1.3;
  margin-bottom: 1rem;
}
@media (min-width: 768px) {
  .article-header h1 { font-size: 2.5rem; }
}
.article-meta-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8rem;
  color: #94a3b8;
}

/* ---------- Article body typography ---------- */
.article-body {
  color: #cbd5e1;
  font-size: 1.05rem;
  line-height: 1.8;
}
.article-body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #f1f5f9;
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.article-body h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: #e2e8f0;
  margin: 2rem 0 0.75rem;
}
.article-body p { margin-bottom: 1.25rem; }
.article-body ul, .article-body ol {
  margin: 1rem 0 1.25rem 1.5rem;
}
.article-body li {
  margin-bottom: 0.5rem;
  padding-left: 0.25rem;
}
.article-body strong { color: #f1f5f9; }
.article-body a {
  color: #0E6BA8;
  text-decoration: underline;
  text-decoration-color: rgba(14, 107, 168, 0.4);
  text-underline-offset: 2px;
  transition: text-decoration-color 0.2s;
}
.article-body a:hover { text-decoration-color: #0E6BA8; }

.article-body blockquote {
  border-left: 3px solid #0E6BA8;
  padding: 0.75rem 1.25rem;
  margin: 1.5rem 0;
  background: rgba(14, 107, 168, 0.06);
  border-radius: 0 0.5rem 0.5rem 0;
  color: #94a3b8;
  font-style: italic;
}

.article-body code {
  background: rgba(255,255,255,0.06);
  padding: 0.15rem 0.4rem;
  border-radius: 0.25rem;
  font-size: 0.9em;
  color: #e2e8f0;
}
.article-body pre {
  background: #0f172a;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 0.5rem;
  padding: 1.25rem;
  overflow-x: auto;
  margin: 1.5rem 0;
}
.article-body pre code {
  background: none;
  padding: 0;
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.9rem;
}
.article-body th, .article-body td {
  padding: 0.65rem 0.75rem;
  border: 1px solid rgba(255,255,255,0.1);
  text-align: left;
}
.article-body th {
  background: rgba(14, 107, 168, 0.1);
  font-weight: 600;
  color: #e2e8f0;
}

/* ---------- TL;DR box ---------- */
.article-tldr {
  background: rgba(14, 107, 168, 0.08);
  border: 1px solid rgba(14, 107, 168, 0.2);
  border-radius: 0.75rem;
  padding: 1.25rem 1.5rem;
  margin-bottom: 2rem;
}
.article-tldr-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #0E6BA8;
  margin-bottom: 0.5rem;
}

/* ---------- Key Takeaways callout ---------- */
.article-takeaways {
  background: rgba(22, 101, 52, 0.08);
  border: 1px solid rgba(22, 101, 52, 0.2);
  border-radius: 0.75rem;
  padding: 1.5rem;
  margin: 2.5rem 0;
}
.article-takeaways-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: #4ade80;
  margin-bottom: 0.75rem;
}
.article-takeaways ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.article-takeaways li {
  padding: 0.4rem 0 0.4rem 1.75rem;
  position: relative;
  color: #cbd5e1;
  font-size: 0.95rem;
}
.article-takeaways li::before {
  content: "\2705";
  position: absolute;
  left: 0;
  top: 0.4rem;
}

/* ---------- Sidebar / TOC ---------- */
.article-sidebar {
  position: sticky;
  top: 5rem;
  align-self: start;
}
@media (max-width: 1023px) {
  .article-sidebar { display: none; }
}
.article-toc {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 0.75rem;
  padding: 1.25rem;
}
.article-toc-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #64748b;
  margin-bottom: 0.75rem;
}
.article-toc a {
  display: block;
  padding: 0.35rem 0;
  font-size: 0.8rem;
  color: #94a3b8;
  text-decoration: none;
  border-left: 2px solid transparent;
  padding-left: 0.75rem;
  transition: all 0.2s;
}
.article-toc a:hover,
.article-toc a.active {
  color: #0E6BA8;
  border-left-color: #0E6BA8;
}

/* ---------- Mobile TOC toggle ---------- */
.mobile-toc-toggle {
  display: none;
  width: 100%;
  padding: 0.65rem 1rem;
  border-radius: 0.5rem;
  border: 1px solid rgba(255,255,255,0.1);
  background: rgba(255,255,255,0.04);
  color: #94a3b8;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  margin-bottom: 1rem;
  text-align: left;
}
@media (max-width: 1023px) {
  .mobile-toc-toggle { display: block; }
}
.mobile-toc-panel {
  display: none;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 0.5rem;
  padding: 1rem;
  margin-bottom: 1.5rem;
}
.mobile-toc-panel.open { display: block; }
@media (min-width: 1024px) {
  .mobile-toc-panel { display: none !important; }
}

/* ---------- Sharing buttons ---------- */
.article-share {
  display: flex;
  gap: 0.5rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
  border: 1px solid rgba(255,255,255,0.1);
  color: #94a3b8;
  background: rgba(255,255,255,0.04);
}
.share-btn:hover {
  background: rgba(14, 107, 168, 0.15);
  color: #e2e8f0;
  border-color: rgba(14, 107, 168, 0.3);
}

/* ---------- Related articles ---------- */
.related-articles {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.related-articles h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: #f1f5f9;
  margin-bottom: 1.25rem;
}
.related-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}
@media (min-width: 640px) { .related-grid { grid-template-columns: repeat(3, 1fr); } }

/* ---------- Prev/Next navigation ---------- */
.article-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.article-nav a {
  display: block;
  padding: 1rem;
  border-radius: 0.5rem;
  border: 1px solid rgba(255,255,255,0.08);
  text-decoration: none;
  transition: all 0.2s;
}
.article-nav a:hover {
  border-color: rgba(14, 107, 168, 0.3);
  background: rgba(14, 107, 168, 0.05);
}
.article-nav-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #64748b;
  margin-bottom: 0.35rem;
}
.article-nav-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: #e2e8f0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-nav .next { text-align: right; }

/* ---------- Homepage carousel (horizontal scroll) ---------- */
.insights-carousel {
  display: flex;
  gap: 1.25rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 0.75rem;
  scrollbar-width: thin;
  scrollbar-color: rgba(14,107,168,0.3) transparent;
}
.insights-carousel::-webkit-scrollbar { height: 6px; }
.insights-carousel::-webkit-scrollbar-track { background: transparent; }
.insights-carousel::-webkit-scrollbar-thumb { background: rgba(14,107,168,0.3); border-radius: 3px; }
.insights-carousel .article-card {
  flex: 0 0 280px;
  scroll-snap-align: start;
}
@media (min-width: 768px) {
  .insights-carousel .article-card { flex: 0 0 300px; }
}

/* ---------- Skeleton loading ---------- */
@keyframes shimmer {
  0% { background-position: -400px 0; }
  100% { background-position: 400px 0; }
}
.skeleton {
  background: linear-gradient(90deg, rgba(255,255,255,0.04) 25%, rgba(255,255,255,0.08) 50%, rgba(255,255,255,0.04) 75%);
  background-size: 800px 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 0.5rem;
}
.skeleton-card { height: 220px; }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .article-card { transition: none; }
  .skeleton { animation: none; }
}

/* ==========================================================================
   Enhanced Article Page — Hero, Progress, Typography, Author
   ========================================================================== */

/* ---------- Reading progress bar ---------- */
.reading-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, #0E6BA8, #3b82f6, #8b5cf6);
  z-index: 9999;
  width: 0;
  transition: width 0.15s linear;
  pointer-events: none;
}

/* ---------- Hero image ---------- */
.article-hero {
  position: relative;
  width: 100%;
  height: 320px;
  overflow: hidden;
  border-radius: 0.75rem;
  margin-bottom: 2rem;
}
@media (min-width: 768px) {
  .article-hero { height: 400px; }
}
@media (min-width: 1024px) {
  .article-hero { height: 440px; }
}
.article-hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: brightness(0.5);
  transition: transform 6s ease-out;
}
.article-hero:hover .article-hero-img {
  transform: scale(1.03);
}
.article-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(15, 23, 42, 0.95) 0%,
    rgba(15, 23, 42, 0.5) 50%,
    rgba(15, 23, 42, 0.2) 100%
  );
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.5rem;
}
@media (min-width: 768px) {
  .article-hero-overlay { padding: 2.5rem; }
}
.article-hero-overlay h1 {
  font-size: 1.6rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1.25;
  margin-bottom: 0.75rem;
  text-shadow: 0 2px 12px rgba(0,0,0,0.3);
  max-width: 720px;
}
@media (min-width: 768px) {
  .article-hero-overlay h1 { font-size: 2.25rem; }
}
@media (min-width: 1024px) {
  .article-hero-overlay h1 { font-size: 2.75rem; }
}
.article-hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.75);
}
.article-hero-meta .category-badge {
  font-size: 0.65rem;
  padding: 0.2rem 0.6rem;
}

/* ---------- Enhanced article body typography ---------- */
.article-body > p:first-of-type::first-letter {
  float: left;
  font-size: 3.2em;
  line-height: 0.85;
  font-weight: 800;
  color: #0E6BA8;
  margin: 0.05em 0.12em 0 0;
  padding: 0;
}
.article-body h2 {
  scroll-margin-top: 6rem;
}
.article-body hr {
  border: none;
  border-top: 1px solid rgba(255,255,255,0.06);
  margin: 2.5rem 0;
}

/* Inline list (from pipe-separated data) */
.article-inline-list {
  list-style: none;
  margin: 1rem 0 1.25rem 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.5rem;
}
.article-inline-list li {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 0.5rem;
  padding: 0.6rem 0.85rem;
  font-size: 0.9rem;
  color: #cbd5e1;
}

/* Info / callout box */
.article-info-box {
  background: rgba(59, 130, 246, 0.06);
  border-left: 4px solid #3b82f6;
  border-radius: 0 0.5rem 0.5rem 0;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  font-size: 0.95rem;
  color: #94a3b8;
}
.article-info-box strong { color: #e2e8f0; }

/* Warning box */
.article-warning-box {
  background: rgba(234, 179, 8, 0.06);
  border-left: 4px solid #eab308;
  border-radius: 0 0.5rem 0.5rem 0;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  font-size: 0.95rem;
  color: #94a3b8;
}
.article-warning-box strong { color: #fbbf24; }

/* Article tags / keywords cloud */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 2rem 0;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.article-tag {
  display: inline-block;
  padding: 0.25rem 0.7rem;
  border-radius: 9999px;
  font-size: 0.7rem;
  font-weight: 600;
  background: rgba(14, 107, 168, 0.08);
  color: #0E6BA8;
  border: 1px solid rgba(14, 107, 168, 0.15);
  text-decoration: none;
  transition: all 0.2s;
  text-transform: lowercase;
}
.article-tag:hover {
  background: rgba(14, 107, 168, 0.18);
  border-color: rgba(14, 107, 168, 0.35);
}

/* ---------- Author bio card ---------- */
.article-author {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 0.75rem;
  padding: 1.5rem;
  margin: 2.5rem 0;
}
.article-author-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, #0E6BA8, #3b82f6);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.5rem;
  color: #fff;
  font-weight: 800;
}
.article-author-info h4 {
  font-size: 1rem;
  font-weight: 700;
  color: #f1f5f9;
  margin: 0 0 0.15rem;
}
.article-author-info .author-title {
  font-size: 0.8rem;
  color: #0E6BA8;
  margin-bottom: 0.5rem;
}
.article-author-info p {
  font-size: 0.85rem;
  color: #94a3b8;
  line-height: 1.55;
  margin: 0;
}
.article-author-info a {
  color: #0E6BA8;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.85rem;
}
.article-author-info a:hover { text-decoration: underline; }

/* ---------- Geo label ---------- */
.article-geo-label {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  color: #64748b;
  margin-top: 0.5rem;
}
.article-geo-label i { font-size: 0.7rem; }

/* ---------- TOC enhancements ---------- */
.article-toc {
  max-height: calc(100vh - 8rem);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(14,107,168,0.2) transparent;
}

/* ---------- Image credit ---------- */
.article-hero-credit {
  position: absolute;
  bottom: 0.5rem;
  right: 0.75rem;
  font-size: 0.6rem;
  color: rgba(255,255,255,0.35);
  z-index: 2;
}
.article-hero-credit a {
  color: rgba(255,255,255,0.45);
  text-decoration: none;
}
.article-hero-credit a:hover {
  color: rgba(255,255,255,0.7);
}

/* ---------- Article card image (for grid) ---------- */
.article-card-img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  display: block;
}

/* ---------- Smooth anchor scrolling ---------- */
html { scroll-behavior: smooth; }

/* ---------- Print styles ---------- */
@media print {
  .reading-progress-bar,
  .article-share,
  .mobile-toc-toggle,
  .article-sidebar,
  .article-nav,
  nav,
  footer { display: none !important; }
  .article-body { color: #000; }
  .article-body h2, .article-body h3 { color: #111; }
}