@font-face {
  font-family: 'Cascadia Code';
  src: url('fonts/CascadiaCode.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

.blog-section {
  max-width: 1600px;
  margin: 0 auto;
  padding: 30px 50px;
  display: flex;
  flex-direction: column;
  row-gap: 30px;
  font-family: 'Montserrat', 'Arial', sans-serif;
}

/* Override landing .page height: 100vh which breaks sticky */
.page:has(.blog-section) {
  height: auto;
}

/* Sticky header */
.page:has(.blog-section) .new-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: var(--white);
}

/* Article grid */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

/* Card */
.blog-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  row-gap: 20px;

  background-color: var(--card-bg);
  border-radius: 20px;
  padding: 30px;
  box-shadow: var(--card-shadow);

  text-decoration: none;
  color: var(--text-black);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.blog-card__body {
  display: flex;
  flex-direction: column;
  row-gap: 8px;
}

.blog-card__title {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-card__desc {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

/* Tags */
.blog-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.blog-tag {
  background-color: var(--light-gray);
  color: var(--text-black);
  padding: 4px 10px;
  border-radius: 6px;
}

/* Filters */
.blog-filters {
  display: flex;
  flex-direction: column;
  row-gap: 16px;
}

.blog-search__input {
  max-width: 400px;
  width: 100%;
}

.blog-tags-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.blog-tag-btn {
  background-color: var(--light-gray);
  color: var(--text-black);
  padding: 6px 14px;
  border-radius: 8px;
  cursor: pointer;
  border: none;
  transition: background-color 0.15s ease, color 0.15s ease;
  font-family: 'Montserrat', 'Arial', sans-serif;
}

.blog-tag-btn--active {
  background-color: var(--blue);
  color: var(--white-white);
}

.blog-empty {
  text-align: center;
  padding: 40px 0;
}

/* Back link */
.blog-back {
  width: fit-content;
}

/* Article page */
.blog-article-layout {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 40px;
}

.blog-article {
  display: flex;
  flex-direction: column;
  row-gap: 30px;
  max-width: 800px;
  min-width: 0;
}

.blog-article__header {
  display: flex;
  flex-direction: column;
  row-gap: 12px;
}

.blog-article__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* Markdown content styling */
.blog-article__content {
  display: flex;
  flex-direction: column;
  row-gap: 16px;
  line-height: 1.7;
  color: var(--text-black);
  font-family: 'Montserrat', 'Arial', sans-serif;
  font-size: 16px;
  font-weight: 400;
}

.blog-article__content h2 {
  font-size: 24px;
  font-weight: 700;
  margin-top: 12px;
}

.blog-article__content h3 {
  font-size: 20px;
  font-weight: 600;
  margin-top: 8px;
}

.blog-article__content h4 {
  font-size: 16px;
  font-weight: 600;
}

.blog-article__content p {
  font-size: 16px;
  line-height: 1.7;
}

.blog-article__content ul,
.blog-article__content ol {
  padding-left: 24px;
  display: flex;
  flex-direction: column;
  row-gap: 6px;
}

.blog-article__content ul {
  list-style: disc;
}

.blog-article__content ol {
  list-style: decimal;
}

.blog-article__content a {
  color: var(--blue);
  text-decoration: underline;
}

.blog-article__content blockquote {
  border-left: 3px solid var(--blue);
  padding: 12px 20px;
  background-color: var(--light-gray);
  border-radius: 0 8px 8px 0;
}

.blog-article__content code {
  background-color: var(--light-gray);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 14px;
  font-family: 'Cascadia Code', 'Consolas', 'Monaco', 'Courier New', monospace;
}

.blog-article__content pre {
  border-radius: 12px;
  overflow: hidden;
  position: relative;
  background-color: #1e1e1e;
}

:root[data-color-scheme="light"] .blog-article__content pre {
  background-color: #f6f8fa;
}

.blog-article__content pre code {
  display: block;
  padding: 20px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.6;
  background: none;
  border-radius: 0;
}

/* hljs overrides */
.blog-article__content pre code.hljs {
  padding: 20px;
  border-radius: 12px;
}

/* Copy button */
.code-copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  padding: 6px;
  border: none;
  border-radius: 6px;
  background-color: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.6);
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s ease, background-color 0.15s ease, color 0.15s ease;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 0;
}

:root[data-color-scheme="light"] .code-copy-btn {
  background-color: rgba(0, 0, 0, 0.06);
  color: rgba(0, 0, 0, 0.5);
}

.blog-article__content pre:hover .code-copy-btn {
  opacity: 1;
}

.code-copy-btn:hover {
  background-color: rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.9);
}

:root[data-color-scheme="light"] .code-copy-btn:hover {
  background-color: rgba(0, 0, 0, 0.1);
  color: rgba(0, 0, 0, 0.8);
}

/* Custom scrollbar for code blocks */
.blog-article__content pre code::-webkit-scrollbar {
  height: 6px;
}

.blog-article__content pre code::-webkit-scrollbar-track {
  background: transparent;
}

.blog-article__content pre code::-webkit-scrollbar-thumb {
  background: var(--gray);
  border-radius: 3px;
}

.blog-article__content pre code::-webkit-scrollbar-thumb:hover {
  background: var(--blue);
}

/* Firefox scrollbar */
.blog-article__content pre code {
  scrollbar-width: thin;
  scrollbar-color: var(--gray) transparent;
}

.blog-article__content img {
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  pointer-events: auto;
}

.blog-article__content hr {
  border: none;
  border-top: 1px solid var(--light-gray);
  margin: 8px 0;
}

/* Tables */
.blog-article__content table {
  width: 100%;
  border-collapse: collapse;
  background-color: #1e1e1e;
  border-radius: 12px;
  overflow: hidden;
  font-size: 14px;
}

:root[data-color-scheme="light"] .blog-article__content table {
  background-color: #f6f8fa;
}

.blog-article__content thead th {
  text-align: left;
  padding: 12px 16px;
  font-weight: 600;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

:root[data-color-scheme="light"] .blog-article__content thead th {
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.blog-article__content tbody td {
  padding: 10px 16px;
  vertical-align: top;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

:root[data-color-scheme="light"] .blog-article__content tbody td {
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.blog-article__content tbody tr:last-child td {
  border-bottom: none;
}

/* TOC sidebar */
.blog-toc {
  position: relative;
  min-width: 0;
  max-width: 220px;
}

.blog-toc__inner {
  position: sticky;
  top: 90px;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  row-gap: 10px;

  scrollbar-width: thin;
  scrollbar-color: var(--gray) transparent;
}

.blog-toc__inner::-webkit-scrollbar {
  width: 4px;
}

.blog-toc__inner::-webkit-scrollbar-track {
  background: transparent;
}

.blog-toc__inner::-webkit-scrollbar-thumb {
  background: var(--gray);
  border-radius: 2px;
}

.blog-toc__title {
  color: var(--text-black);
}

.blog-toc__progress-text {
  font-variant-numeric: tabular-nums;
}

.blog-toc__nav {
  display: flex;
  gap: 0;
  position: relative;
}

.blog-toc__track {
  position: relative;
  width: 2px;
  flex-shrink: 0;
  background-color: var(--light-gray);
  border-radius: 2px;
  overflow: hidden;
}

.blog-toc__track-fill {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 0%;
  background-color: var(--blue);
  border-radius: 2px;
  transition: height 0.15s ease;
}

.blog-toc__list {
  display: flex;
  flex-direction: column;
  list-style: none;
}

.blog-toc__item {
  padding: 0;
}

.blog-toc__item--h3 {
  padding-left: 12px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
}

.blog-toc__item--h3.blog-toc__item--visible {
  max-height: 50px;
}

.blog-toc__link {
  display: block;
  padding: 6px 12px;
  color: var(--text-gray);
  text-decoration: none;
  border-left: 2px solid transparent;
  margin-left: -2px;
  transition: color 0.15s ease, border-color 0.15s ease;
  line-height: 1.4;
  word-break: break-word;
  max-height: 3.2em;
  overflow: hidden;
}

.blog-toc__link--active {
  color: var(--blue);
  border-left-color: var(--blue);
}

/* Hover */
@media (hover: hover) {
  .blog-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px 0 rgba(0, 0, 0, 0.12);
  }

  .blog-tag-btn:not(.blog-tag-btn--active):hover {
    background-color: var(--button-gray-hover);
  }

  .blog-tag-btn--active:hover {
    background-color: var(--blue-hover);
  }

  .blog-toc__link:not(.blog-toc__link--active):hover {
    color: var(--text-black);
  }
}

@media (hover: none) {
  .blog-card:active {
    transform: translateY(-2px);
  }

  .blog-tag-btn:not(.blog-tag-btn--active):active {
    background-color: var(--button-gray-hover);
  }

  .blog-tag-btn--active:active {
    background-color: var(--blue-hover);
  }
}

/* Responsive */
@media screen and (max-width: 1152px) {
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media screen and (max-width: 896px) {
  .blog-section {
    padding: 20px 20px;
  }

  .blog-article-layout {
    grid-template-columns: 1fr;
  }

  .blog-toc {
    display: none;
  }
}

@media screen and (max-width: 650px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }
}

@media screen and (max-width: 544px) {
  .blog-section {
    padding: 20px 10px;
  }

  .blog-card {
    padding: 20px;
    border-radius: 16px;
  }

  .blog-article__content {
    font-size: 15px;
  }

  .blog-search__input {
    max-width: 100%;
  }
}