/* ==========================================================================
   Blog Styles (supplements style.css)
   - Blog listing page
   - Single post page
   ========================================================================== */

/* ==========================================================================
   1. Shared Components
   ========================================================================== */

/* Breadcrumb */
.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  font-size: var(--fs-small);
  color: var(--color-text-muted);
}


.breadcrumb li::after {
  margin-left: var(--space-xs);
  color: var(--color-text-muted);
}

.breadcrumb li:last-child::after {
  display: none;
}

.breadcrumb a {
  color: var(--color-text-secondary);
}

.breadcrumb a:hover {
  color: var(--color-primary);
}

/* Active nav link */
.site-nav__link--active {
  color: var(--color-primary) !important;
}

/* Narrow container for article content */
.container--narrow {
  max-width: 800px;
}

/* Blog category badge (inline) */
.blog-card__category,
.featured-post__category,
.post-header__category {
  display: inline-block;
  padding: 2px 10px;
  background-color: var(--color-primary);
  color: var(--color-bg);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius-full);
}

/* ==========================================================================
   2. Blog Hero (Listing Page)
   ========================================================================== */

.blog-hero {
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-xl);
}

.blog-hero__content {
  max-width: 700px;
}

.blog-hero .breadcrumb {
  margin-bottom: var(--space-lg);
}

.blog-hero__title {
  font-size: var(--fs-h1);
  margin-bottom: var(--space-md);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 2;
}

.blog-hero__subtitle {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   3. Featured Post (Listing Page)
   ========================================================================== */

.blog-featured {
  padding-bottom: var(--space-2xl);
}

.featured-post {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
}

.featured-post:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
}

.featured-post__link {
  display: grid;
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .featured-post__link {
    grid-template-columns: 1.2fr 1fr;
  }
}

.featured-post__image {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

@media (min-width: 768px) {
  .featured-post__image {
    aspect-ratio: auto;
    min-height: 360px;
  }
}

.featured-post__image-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--color-bg-elevated), var(--color-bg-hover));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: var(--fs-small);
}

.featured-post__badge {
  position: absolute;
  top: var(--space-md);
  left: var(--space-md);
  padding: 6px 14px;
  background-color: var(--color-primary);
  color: var(--color-bg);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  border-radius: var(--radius-full);
}

.featured-post__content {
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

@media (min-width: 768px) {
  .featured-post__content {
    padding: var(--space-2xl);
  }
}

.featured-post__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.featured-post__title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: var(--space-md);
  line-height: 1.2;
}

.featured-post__excerpt {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

.featured-post__cta {
  color: var(--color-primary);
  font-weight: 600;
}

/* ==========================================================================
   4. Blog Content Layout (Posts + Sidebar)
   ========================================================================== */

.blog-content {
  padding-bottom: var(--space-3xl);
}

.blog-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
}

@media (min-width: 1024px) {
  .blog-layout {
    grid-template-columns: 1fr 320px;
    gap: var(--space-2xl);
  }
}

/* ==========================================================================
   5. Blog Filters (Category Tabs)
   ========================================================================== */

.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.blog-filter {
  padding: 0.5rem 1.25rem;
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--color-text-secondary);
  background-color: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.blog-filter:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.blog-filter.is-active {
  background-color: var(--color-primary);
  color: var(--color-bg);
  border-color: var(--color-primary);
}

/* ==========================================================================
   6. Blog Grid (on listing page — overrides for 2-col in main area)
   ========================================================================== */

.blog-main .blog-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

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

/* 3-col variant for related posts */
.blog-grid--3col {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

@media (min-width: 640px) {
  .blog-grid--3col {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .blog-grid--3col {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ==========================================================================
   7. Pagination
   ========================================================================== */

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.pagination__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.5rem 1rem;
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.pagination__link:hover:not(.pagination__link--disabled) {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.pagination__link--disabled {
  opacity: 0.4;
  pointer-events: none;
}

.pagination__numbers {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.pagination__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.pagination__num:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.pagination__num.is-active {
  background-color: var(--color-primary);
  color: var(--color-bg);
  border-color: var(--color-primary);
}

.pagination__dots {
  color: var(--color-text-muted);
  padding-inline: var(--space-xs);
}

/* ==========================================================================
   8. Blog Sidebar
   ========================================================================== */

.blog-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

@media (min-width: 1024px) {
  .blog-sidebar {
    position: sticky;
    top: calc(var(--header-height) + var(--space-xl));
    align-self: start;
    max-height: calc(100vh - var(--header-height) - var(--space-2xl));
    overflow-y: auto;
  }
}

.sidebar-widget {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.sidebar-widget--cta {
  background: linear-gradient(135deg, var(--color-bg-card), var(--color-bg-elevated));
  border-color: var(--color-primary);
  box-shadow: 0 0 24px var(--color-primary-glow);
}

.sidebar-widget__title {
  font-size: 1rem;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
}

.sidebar-widget__text {
  font-size: var(--fs-small);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
  line-height: 1.5;
}

/* Sidebar Search */
.sidebar-search {
  display: flex;
  gap: var(--space-xs);
}

.sidebar-search__input {
  flex: 1;
  padding: 0.625rem 0.875rem;
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: var(--fs-small);
}

.sidebar-search__input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.sidebar-search__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  transition: all var(--transition-fast);
}

.sidebar-search__btn:hover {
  background-color: var(--color-primary);
  color: var(--color-bg);
}

/* Sidebar Categories */
.sidebar-categories li {
  border-bottom: 1px solid var(--color-border);
}

.sidebar-categories li:last-child {
  border-bottom: none;
}

.sidebar-categories a {
  display: flex;
  justify-content: space-between;
  padding: var(--space-sm) 0;
  color: var(--color-text-secondary);
  font-size: var(--fs-small);
  transition: color var(--transition-fast);
}

.sidebar-categories a:hover {
  color: var(--color-primary);
}

.sidebar-categories__count {
  background-color: var(--color-bg-elevated);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

/* Sidebar Popular Posts */
.sidebar-posts {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.sidebar-post {
  display: flex;
  gap: var(--space-md);
  align-items: center;
  transition: opacity var(--transition-fast);
}

.sidebar-post:hover {
  opacity: 0.8;
}

.sidebar-post__image {
  flex-shrink: 0;
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.sidebar-post__image-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--color-bg-elevated), var(--color-bg-hover));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

.sidebar-post__title {
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
  line-height: 1.3;
}

.sidebar-post__date {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

/* Sidebar Newsletter */
.sidebar-newsletter {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.sidebar-newsletter__input {
  padding: 0.75rem;
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: var(--fs-small);
}

.sidebar-newsletter__input:focus {
  outline: none;
  border-color: var(--color-primary);
}

/* Sidebar Tags */
.sidebar-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.sidebar-tag {
  display: inline-block;
  padding: 4px 12px;
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.sidebar-tag:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* ==========================================================================
   9. Single Post: Header
   ========================================================================== */

.post-header {
  padding-top: var(--space-2xl);
}

.post-header .breadcrumb {
  margin-bottom: var(--space-lg);
}

.post-header__category {
  margin-bottom: var(--space-md);
}

.post-header__title {
  font-size: clamp(1.75rem, 5vw, 3rem);
  margin-bottom: var(--space-md);
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.post-header__excerpt {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-xl);
}

.post-header__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-lg);
  padding-bottom: var(--space-xl);
}

.post-author {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.post-author__avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  overflow: hidden;
}

.post-author__name {
  font-weight: 600;
  display: block;
  margin-bottom: 2px;
}

.post-header__details {
  font-size: var(--fs-small);
  color: var(--color-text-muted);
}

/* Share Buttons */
.post-share {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.post-share__label {
  font-size: var(--fs-small);
  color: var(--color-text-muted);
}

.post-share__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.post-share__btn:hover {
  background-color: var(--color-primary);
  color: var(--color-bg);
  border-color: var(--color-primary);
}

/* Featured Image */
.post-header__image {
  margin-top: var(--space-xl);
}

.post-header__image-wrapper {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.post-header__image-placeholder {
  width: 100%;
  aspect-ratio: 2 / 1;
  background: linear-gradient(135deg, var(--color-bg-card), var(--color-bg-elevated));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-weight: 600;
}

/* ==========================================================================
   10. Single Post: Content Layout (TOC + Body)
   ========================================================================== */

.post-layout {
  padding-block: var(--space-2xl);
}

.post-layout__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
}

@media (min-width: 1024px) {
  .post-layout__grid {
    grid-template-columns: 220px 1fr;
    gap: var(--space-2xl);
  }
}

/* ==========================================================================
   11. Table of Contents (Sticky Sidebar)
   ========================================================================== */

.post-toc {
  display: none;
}

@media (min-width: 1024px) {
  .post-toc {
    display: block;
  }

  .post-toc__inner {
    position: sticky;
    top: calc(var(--header-height) + var(--space-xl));
  }
}

.post-toc__title {
  font-size: var(--fs-small);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.post-toc__list {
  counter-reset: toc;
  padding-left: 0;
}

.post-toc__list li {
  counter-increment: toc;
  margin-bottom: var(--space-xs);
  font-weight: bold;
}

.post-toc__list li:hover{
  color: red;
}


.post-toc__link {
  display: block;
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--fs-small);
  color: var(--color-text-secondary);
  border-left: 2px solid var(--color-border);
  transition: all var(--transition-fast);
}

.post-toc__link:hover,
.post-toc__link.is-active {
  color: var(--color-primary);
  border-left-color: var(--color-primary);
  background-color: rgba(0, 217, 255, 0.05);
}

/* ==========================================================================
   12. Single Post: Body (Article Content / Prose)
   ========================================================================== */

.post-body {
  max-width: 760px;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
}

.post-body__lead {
  font-size: 1.25rem;
  color: var(--color-text);
  margin-bottom: var(--space-xl);
  line-height: 1.7;
}

.post-body h2 {
  font-size: clamp(1.5rem, 3vw, 1.875rem);
  color: var(--color-text);
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
  padding-top: var(--space-lg);
  scroll-margin-top: calc(var(--header-height) + var(--space-xl));
}

.post-body h3 {
  font-size: 1.25rem;
  color: var(--color-text);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}

.post-body p {
  margin-bottom: var(--space-lg);
}

.post-body strong {
  color: var(--color-text);
  font-weight: 600;
}

.post-body em {
  font-style: italic;
}

.post-body a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.post-body a:hover {
  color: var(--color-primary-hover);
}

.post-body ul,
.post-body ol {
  margin-bottom: var(--space-lg);
  padding-left: var(--space-xl);
}

.post-body ul {
  list-style: disc;
}

.post-body ol {
  list-style: decimal;
}

.post-body li {
  margin-bottom: var(--space-sm);
}

.post-body img {
  width: 100%;
  border-radius: var(--radius-lg);
  margin-block: var(--space-lg);
  border: 1px solid var(--color-border);
}

/* Blockquote */
.post-blockquote {
  border-left: 3px solid var(--color-primary);
  padding: var(--space-md) var(--space-lg);
  margin-block: var(--space-xl);
  background-color: var(--color-bg-card);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.post-blockquote p {
  font-size: 1.125rem;
  color: var(--color-text);
  font-style: italic;
  margin-bottom: 0;
}

/* Table */
.post-table-wrapper {
  overflow-x: auto;
  margin-block: var(--space-xl);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.post-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-small);
}

.post-table th,
.post-table td {
  padding: var(--space-md);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.post-table th {
  background-color: var(--color-bg-card);
  color: var(--color-text);
  font-weight: 700;
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.post-table td {
  color: var(--color-text-secondary);
}

.post-table tbody tr:hover {
  background-color: var(--color-bg-elevated);
}

.post-table tbody tr:last-child td {
  border-bottom: none;
}

/* Callout Box */
.post-callout {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-lg);
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-lg);
  margin-block: var(--space-xl);
  box-shadow: 0 0 24px var(--color-primary-glow);
}

.post-callout__icon {
  flex-shrink: 0;
  color: var(--color-primary);
  margin-top: 2px;
}

.post-callout__content {
  font-size: var(--fs-body);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.post-callout__content strong {
  display: block;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

/* Product CTA Block */
.post-product-cta {
  margin-block: var(--space-2xl);
  padding: var(--space-xl);
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
}

.post-product-cta__title {
  font-size: 1.25rem;
  margin-bottom: var(--space-lg);
  color: var(--color-text);
}

.post-product-cta__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

@media (min-width: 640px) {
  .post-product-cta__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.post-product-cta__card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-lg);
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  gap: var(--space-md);
}

.post-product-cta__card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.post-product-cta__image {
  width: 120px;
  height: 120px;
}

.post-product-cta__image-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--color-bg-card), var(--color-bg-hover));
  border: 1px dashed var(--color-border-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: var(--fs-xs);
}

.post-product-cta__brand {
  font-size: var(--fs-xs);
  color: var(--color-primary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.post-product-cta__info h4 {
  font-size: 1rem;
  margin-block: var(--space-xs);
  color: var(--color-text);
}

.post-product-cta__price {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
}

/* FAQ Section */
.post-faq {
  margin-block: var(--space-xl);
}

.post-faq__item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.post-faq__item:hover {
  border-color: var(--color-border-light);
}

.post-faq__item[open] {
  border-color: var(--color-primary);
}

.post-faq__item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  background-color: var(--color-bg-card);
  list-style: none;
  user-select: none;
}

.post-faq__item summary::-webkit-details-marker {
  display: none;
}

.post-faq__item summary::after {
  content: '+';
  font-size: 1.25rem;
  color: var(--color-text-muted);
  transition: transform var(--transition-fast);
}

.post-faq__item[open] summary::after {
  transform: rotate(45deg);
  color: var(--color-primary);
}

.post-faq__answer {
  padding: 0 var(--space-lg) var(--space-lg);
  background-color: var(--color-bg-card);
}

.post-faq__answer p {
  color: var(--color-text-secondary);
  font-size: var(--fs-body);
  line-height: 1.7;
  margin-bottom: 0;
}

/* ==========================================================================
   13. Post Footer
   ========================================================================== */

.post-footer {
  padding-block: var(--space-2xl);
  border-top: 1px solid var(--color-border);
}

/* Tags */
.post-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-2xl);
}

.post-tags__label {
  font-weight: 600;
  font-size: var(--fs-small);
  color: var(--color-text-muted);
}

/* Author Bio */
.post-author-bio {
  display: flex;
  gap: var(--space-lg);
  padding: var(--space-xl);
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-2xl);
}

.post-author-bio__avatar {
  flex-shrink: 0;
  width: 72px;
  height: 72px;
  border-radius: var(--radius-full);
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
}

.post-author-bio__name {
  font-size: 1.125rem;
  margin-bottom: var(--space-xs);
}

.post-author-bio__text {
  font-size: var(--fs-small);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* Post Navigation (Prev/Next) */
.post-nav {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

@media (min-width: 640px) {
  .post-nav {
    grid-template-columns: 1fr 1fr;
  }
}

.post-nav__link {
  display: block;
  padding: var(--space-lg);
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.post-nav__link:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.post-nav__link--next {
  text-align: right;
}

.post-nav__label {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
}

.post-nav__link--next .post-nav__label {
  justify-content: flex-end;
}

.post-nav__title {
  display: block;
  font-weight: 600;
  color: var(--color-text);
  font-size: var(--fs-body);
  line-height: 1.3;
}

/* Related Posts Section */
.section--related {
  border-top: 1px solid var(--color-border);
}

/* 购买按钮 */
.vape-btn-3 {
  position: relative;
  display: inline-block;
  padding: 16px 40px;
  font: 600 14px/1 system-ui, sans-serif;
  color: #1a0b2e;
  letter-spacing: 2px;
  text-transform: uppercase;
  text-decoration: none !important;
  background: #fff;
  border-radius: 8px;
  transition: transform .3s ease, box-shadow .3s ease;
  border: 1px solid;
}

.vape-btn-3::before,
.vape-btn-3::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 80%;
  height: 30px;
  transform: translateX(-50%);
  pointer-events: none;
  opacity: 0;
  transition: all .9s ease;
}

.vape-btn-3::before {
  background:
    radial-gradient(circle at 20% 100%, rgba(167, 139, 250, .9), transparent 15px),
    radial-gradient(circle at 50% 100%, rgba(167, 139, 250, .9), transparent 20px),
    radial-gradient(circle at 80% 100%, rgba(167, 139, 250, .9), transparent 12px);
}

.vape-btn-3::after {
  background:
    radial-gradient(circle at 35% 100%, rgba(196, 181, 253, .7), transparent 18px),
    radial-gradient(circle at 65% 100%, rgba(196, 181, 253, .7), transparent 14px);
  transition-delay: .1s;
}

.vape-btn-3:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(167, 139, 250, .4);
}

.vape-btn-3:hover::before {
  opacity: 1;
  transform: translate(-50%, -100px) scale(2);
}

.vape-btn-3:hover::after {
  opacity: 1;
  transform: translate(-50%, -130px) scale(2.5);
}