/* Đúng Chưa? blog article chrome — Paper & Ink V2
   Shared essay layout: hero, cover, teal H2 rails, takeaways, on-this-page TOC, waitlist rail. */

.blog-shell {
  width: min(100% - 2rem, 88rem);
  margin-inline: auto;
  padding: 1.75rem 0 3rem;
}

.blog-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.25rem;
  padding-bottom: 1.5rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.blog-crumb-brand {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.blog-crumb-brand:hover {
  color: var(--teal-deep);
  text-decoration: none;
}

.blog-crumb .breadcrumbs {
  justify-content: flex-end;
  margin-bottom: 0;
  text-align: right;
}

.blog-layout {
  display: grid;
  gap: 2.5rem;
}

@media (min-width: 1024px) {
  .blog-layout {
    grid-template-columns: minmax(0, 1fr) 20rem;
  }
}

@media (min-width: 1280px) {
  .blog-layout {
    grid-template-columns: minmax(0, 54rem) 22rem;
    gap: 3.5rem;
  }
}

.blog-main {
  min-width: 0;
}

.blog-hero h1 {
  font-size: clamp(1.85rem, 4vw, 2.75rem);
  line-height: 1.16;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.blog-hero .blog-dek {
  margin-top: 1rem;
  max-width: 48rem;
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  line-height: 1.6;
  color: var(--ink-soft);
}

.blog-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1.5rem;
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: var(--ink-muted);
}

.blog-meta-dot {
  color: var(--border-strong);
}

.blog-save {
  margin-top: 1.25rem;
}

.blog-save-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.9rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: var(--shadow-card);
}

.blog-save-btn svg {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
}

.blog-save-btn:hover,
.blog-save-btn:focus-visible {
  border-color: var(--teal);
  color: var(--teal-deep);
  background: var(--teal-soft);
}

.blog-save-btn[data-copied="true"] {
  border-color: var(--teal);
  background: var(--teal-soft);
  color: var(--teal-deep);
}

.blog-cover {
  margin: 2rem 0 2.5rem;
  overflow: hidden;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow-card);
}

.blog-cover img {
  display: block;
  width: 100%;
  height: auto;
}

.blog-rule {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

.blog-body {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.blog-layout section,
.blog-section,
.blog-related,
.blog-topics {
  padding: 0;
}

.blog-section {
  scroll-margin-top: 5.5rem;
}

.blog-body h2,
.blog-section h2 {
  scroll-margin-top: 5.5rem;
  border-left: 3px solid var(--teal);
  padding: 0.15rem 0 0.15rem 0.9rem;
  font-size: clamp(1.25rem, 2.4vw, 1.55rem);
  letter-spacing: -0.02em;
  color: var(--ink);
}

.blog-body h3 {
  margin-top: 1.4rem;
  font-size: 1.1rem;
  color: var(--ink);
}

.blog-prose {
  margin-top: 1rem;
}

.blog-prose > * + * {
  margin-top: 1rem;
}

.blog-prose p,
.blog-prose li {
  font-size: 1.03rem;
  line-height: 1.75;
  color: var(--ink-soft);
}

.blog-prose strong {
  color: var(--ink);
  font-weight: 600;
}

.blog-prose ul,
.blog-prose ol {
  padding-left: 1.35rem;
}

.blog-prose li + li {
  margin-top: 0.4rem;
}

.blog-takeaway {
  margin: 1.25rem 0 0;
  padding: 1.1rem 1.2rem;
  background: var(--teal-soft);
  border: 1px solid rgba(47, 118, 111, 0.22);
  border-left: 3px solid var(--teal);
  border-radius: var(--radius-sm);
}

.blog-takeaway .blog-kicker {
  margin-bottom: 0.4rem;
  color: var(--teal-deep);
}

.blog-takeaway p:last-child {
  color: var(--ink);
  font-size: 1rem;
  line-height: 1.6;
}

.blog-pullquote {
  margin: 1.35rem 0 0;
  padding: 0.15rem 0 0.15rem 1rem;
  border-left: 2px solid var(--ink);
  color: var(--ink);
  font-size: 1.2rem;
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: -0.02em;
}

.blog-kicker {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.blog-toc {
  padding: 1rem 1.1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.blog-toc .blog-kicker {
  margin-bottom: 0.75rem;
}

.blog-toc ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.blog-toc a,
[data-blog-toc] a {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  color: var(--ink-soft);
  font-size: 0.9rem;
  line-height: 1.35;
  text-decoration: none;
}

.blog-toc a:hover,
.blog-toc a:focus-visible,
.blog-toc a.is-active,
[data-blog-toc] a:hover,
[data-blog-toc] a:focus-visible,
[data-blog-toc] a.is-active {
  color: var(--teal-deep);
  text-decoration: none;
}

.toc-dot {
  width: 0.4rem;
  height: 0.4rem;
  margin-top: 0.45rem;
  flex-shrink: 0;
  border-radius: 999px;
  background: var(--teal);
}

.toc-line-1,
.toc-line-2 {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.toc-line-1 { -webkit-line-clamp: 1; line-clamp: 1; }
.toc-line-2 { -webkit-line-clamp: 2; line-clamp: 2; }

.blog-toc--mobile {
  display: block;
  margin-top: 2rem;
}

.blog-rail {
  display: none;
}

.blog-rail-sticky {
  position: sticky;
  top: 5.5rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.blog-rail .blog-toc {
  padding: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
}

@media (min-width: 1024px) {
  .blog-toc--mobile {
    display: none;
  }

  .blog-rail {
    display: block;
  }
}

.blog-next {
  padding: 1.2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.blog-next-inner {
  display: flex;
  gap: 0.75rem;
}

.blog-next-mark {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: var(--teal-soft);
  color: var(--teal-deep);
  font-weight: 700;
  font-size: 0.95rem;
}

.blog-next h3 {
  font-size: 0.95rem;
  margin-bottom: 0.4rem;
}

.blog-next p {
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--ink-soft);
}

.blog-next a {
  display: inline-flex;
  margin-top: 0.7rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--teal-deep);
}

.blog-resources {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.blog-resource {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.55rem 0.45rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: inherit;
  border: 1px solid transparent;
  background: transparent;
  width: 100%;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.blog-resource:hover,
.blog-resource:focus-visible {
  background: var(--paper-soft);
  border-color: var(--border);
  text-decoration: none;
}

.blog-resource-mark {
  flex-shrink: 0;
  width: 1.75rem;
  height: 1.75rem;
  margin-top: 0.1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  background: var(--teal-soft);
  color: var(--teal-deep);
  font-size: 0.7rem;
  font-weight: 700;
}

.blog-resource-mark svg,
.blog-next-mark svg {
  width: 0.95rem;
  height: 0.95rem;
}

.blog-resource strong {
  display: block;
  font-size: 0.9rem;
  color: var(--ink);
}

.blog-resource span {
  display: block;
  font-size: 0.75rem;
  color: var(--ink-muted);
}

.blog-boundary {
  margin-top: 2.75rem;
  padding: 1.2rem 1.25rem;
  background: var(--paper-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.blog-boundary p + p {
  margin-top: 0.45rem;
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--ink-soft);
}

.blog-dual-cta {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

@media (min-width: 640px) {
  .blog-dual-cta {
    flex-direction: row;
    align-items: center;
  }
}

.blog-topics {
  margin-top: 2.75rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.blog-topics ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin-top: 0.9rem;
}

.blog-topics a {
  display: inline-flex;
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink-soft);
  font-size: 0.78rem;
  text-decoration: none;
}

.blog-topics a:hover,
.blog-topics a:focus-visible {
  border-color: var(--teal);
  color: var(--teal-deep);
  text-decoration: none;
}

.blog-related {
  margin-top: 2.25rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.blog-related-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}

@media (min-width: 640px) {
  .blog-related-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.blog-related-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 1rem 1.1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.blog-related-card h3 {
  font-size: 0.95rem;
  margin-bottom: 0.4rem;
}

.blog-related-card p {
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--ink-soft);
}

.blog-related-card a.read {
  margin-top: 0.75rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--teal-deep);
}

.blog-toast {
  position: fixed;
  left: 50%;
  bottom: 1.25rem;
  transform: translateX(-50%) translateY(120%);
  z-index: 120;
  padding: 0.7rem 1rem;
  background: var(--ink);
  color: var(--surface);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: var(--shadow-soft);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.blog-toast.is-on {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* —— Blog index: left-aligned hero + stacked cards with reading time —— */
.blog-index-page .sub-hero {
  display: none;
}

.blog-index {
  max-width: 46rem;
  margin: 0 auto;
  padding: 3rem 0 4rem;
}

.blog-index-hero {
  text-align: left;
  margin-bottom: 2.5rem;
}

.blog-index-hero .blog-kicker {
  color: var(--teal-deep);
  margin-bottom: 0.75rem;
}

.blog-index-hero h1 {
  font-size: clamp(2rem, 4.5vw, 2.75rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.blog-index-hero .blog-dek {
  margin-top: 1rem;
  max-width: 42rem;
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--ink-soft);
}

.blog-index-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.blog-index-card .blog-meta {
  margin-top: 0;
}

.blog-index-card {
  display: block;
  padding: 1.4rem 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  text-decoration: none;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.blog-index-card:hover,
.blog-index-card:focus-visible {
  border-color: var(--border-strong);
  text-decoration: none;
  transform: translateY(-1px);
}

.blog-index-card h2 {
  margin: 0.7rem 0 0.5rem;
  font-size: 1.35rem;
  line-height: 1.25;
  color: var(--ink);
}

.blog-index-card:hover h2 {
  color: var(--teal-deep);
}

.blog-index-card p {
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--ink-soft);
}

.blog-index-card .read {
  display: inline-flex;
  margin-top: 0.85rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--teal-deep);
}

.blog-index-cta {
  margin-top: 2.5rem;
  padding: 1.5rem 1.6rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.blog-index-cta h2 {
  font-size: 1.25rem;
  margin-bottom: 0.45rem;
}

.blog-index-cta p {
  font-size: 0.95rem;
  color: var(--ink-soft);
  margin-bottom: 1rem;
}

.blog-body .table-wrap {
  margin: 1rem 0;
}

.blog-body table {
  min-width: 0;
}

@media (max-width: 700px) {
  .blog-body table {
    min-width: 28rem;
  }
}