@import url("https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=Gelasio&family=Inter:wght@400;500;600;700&family=Lora:ital,wght@0,400;0,500;0,600;1,400;1,500&display=swap");

:root {
  --app-bg: #f7f7f8;
  --app-text: #111111;
  --muted-text: #6b7280;
  --content-text: #1f2937;
  --rank-text: #5e81ac;
  --surface: #ffffff;
  --surface-soft: color-mix(in srgb, #5e81ac 12%, #ffffff);
  --border-color: color-mix(in srgb, #5e81ac 25%, #ffffff);
  --brand-circle-bg: #5e81ac;
  --brand-circle-text: #ffffff;
  --brand-ring-color: color-mix(in srgb, #5e81ac 30%, #ffffff);
  --hover-action-bg: #5e81ac;
  --hover-action-text: #ffffff;
  --archive-year: #6b7280;
  --archive-span: #6b7280;
}

html[data-theme="dark"] {
  --app-bg: #292a2d;
  --app-text: #ffffff;
  --muted-text: #bfbfbf;
  --content-text: #ededed;
  --rank-text: color-mix(in srgb, #88c0d0 70%, transparent);
  --surface: #252627;
  --surface-soft: #2d3032;
  --border-color: #3a3d3f;
  --brand-circle-bg: #88c0d0;
  --brand-circle-text: #111111;
  --brand-ring-color: color-mix(in srgb, #88c0d0 30%, #090b0d);
  --hover-action-bg: #88c0d0;
  --hover-action-text: #111111;
  --archive-year: #eceff4;
  --archive-span: #88c0d0;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  overflow-x: hidden;
}

body {
  margin: 0;
  background: var(--app-bg);
  color: var(--app-text);
  font-family: Inter, sans-serif;
  font-size: 14px;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

main {
  min-height: calc(100vh - 80px);
}

.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  min-height: 80px;
  padding: 1rem 5vw;
  border-bottom: 1px solid var(--border-color);
  background: var(--surface);
}

.brand-kat {
  display: inline-grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 9999px;
  background: var(--brand-circle-bg);
  color: var(--brand-circle-text);
  font-family: "DM Serif Display", Gelasio, serif;
  font-style: italic;
  line-height: 1;
  outline: 2px solid var(--brand-ring-color);
  outline-offset: 2px;
  box-shadow: 0 14px 28px -12px rgb(0 0 0 / 0.68), 0 4px 10px rgb(0 0 0 / 0.28);
}

.brand-kat-navbar {
  font-size: 1.8rem;
}

.brand-kat-footer {
  font-size: 1.65rem;
}

.nav-search {
  flex: 0 1 360px;
}

.nav-search input,
.search-form input {
  width: 100%;
  border: 0;
  border-radius: 9999px;
  background: var(--surface-soft);
  color: var(--app-text);
  padding: 1rem 1.25rem;
}

.nav-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link,
.theme-button,
.mobile-search-toggle {
  border: 0;
  border-radius: 9999px;
  background: transparent;
  color: color-mix(in srgb, var(--app-text) 86%, var(--muted-text) 14%);
  cursor: pointer;
  font: inherit;
  padding: 0.8rem 1rem;
}

.nav-link:hover,
.nav-link.is-active,
.nav-link[aria-current="page"],
.theme-button:hover,
.mobile-search-toggle:hover {
  background: var(--hover-action-bg);
  color: var(--hover-action-text);
}

.nav-link.is-active,
.nav-link[aria-current="page"] {
  font-weight: 600;
}

.theme-button,
.mobile-search-toggle {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  padding: 0;
}

.theme-button {
  background: var(--hover-action-bg);
  color: var(--hover-action-text);
}

.mobile-search-toggle {
  display: none;
  background: var(--surface-soft);
}

.home-layout {
  display: grid;
  grid-template-columns: minmax(0, 860px) 350px;
  gap: 2.5rem;
  justify-content: center;
  width: min(1320px, 100%);
  margin: 0 auto;
  padding: 2rem 5vw;
}

.post-feed {
  min-width: 0;
}

.site-pagination {
  display: grid;
  grid-template-columns: minmax(7.5rem, 1fr) auto minmax(7.5rem, 1fr);
  align-items: center;
  gap: 1rem;
  margin: 2rem 0 3rem;
  padding-top: 0.75rem;
}

.pagination-direction,
.pagination-page {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  background: var(--surface-soft);
  color: var(--app-text);
  font-weight: 600;
  line-height: 1;
  padding: 0.65rem 1rem;
  transition: background 180ms ease, border-color 180ms ease, color 180ms ease;
}

.pagination-direction:first-child {
  justify-self: start;
}

.pagination-direction:last-child {
  justify-self: end;
}

.pagination-pages {
  display: flex;
  gap: 0.5rem;
}

.pagination-page {
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
}

.pagination-direction:hover,
.pagination-page:hover,
.pagination-page.is-current {
  border-color: var(--hover-action-bg);
  background: var(--hover-action-bg);
  color: var(--hover-action-text);
}

.pagination-direction.is-disabled {
  cursor: not-allowed;
  opacity: 0.4;
}

.post-card {
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.25rem;
  padding-bottom: 1.25rem;
}

.post-meta-line {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  color: var(--muted-text);
}

.post-meta-line img,
.author-line img {
  width: 28px;
  height: 28px;
  border-radius: 9999px;
  object-fit: cover;
}

.post-card-banner {
  height: min(24rem, 48vw);
  margin-bottom: 1.25rem;
  overflow: hidden;
  border-radius: 1rem;
  background: var(--surface-soft);
}

.post-card-banner img,
.compact-card img,
.single-banner {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.blog-title {
  margin: 0 0 0.5rem 0;
  font-size: 1.2rem;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.post-description {
  margin: 0 0 1rem 0;
  color: var(--muted-text) !important;
  font-family: Inter, -apple-system, BlinkMacSystemFont, sans-serif !important;
  font-size: 0.88rem !important;
  line-height: 1.5 !important;
  opacity: 0.75 !important;
}

.post-tags,
.tag-list,
.book-tags,
.single-tags,
.hobby-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.post-tags span,
.tag,
.single-tags a,
.book-tags a,
.book-tag-btn,
.archive-book-tags span,
.hobby-list span {
  border-radius: 9999px;
  background: var(--surface-soft);
  color: var(--app-text);
  padding: 0.65rem 1rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 180ms ease;
}

.book-tag-btn.is-active,
.book-tag-btn:hover {
  background: var(--hover-action-bg);
  color: var(--hover-action-text);
}

.books-container {
  transition: opacity 150ms ease;
}

.books-container.is-filtering {
  opacity: 0.35;
}

.post-tags span,
.archive-category {
  background: var(--hover-action-bg);
  color: var(--hover-action-text);
}

.home-sidebar {
  border-left: 1px solid var(--border-color);
  padding-left: 2rem;
}

.home-sidebar h2,
.similar-posts h2 {
  margin: 0 0 1.5rem;
  font-size: 1.25rem;
}

.home-about {
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
}

.home-about-heading {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.home-about-heading img {
  width: 3.25rem;
  height: 3.25rem;
  border: 2px solid var(--surface);
  border-radius: 50%;
  object-fit: cover;
  outline: 1px solid var(--border-color);
  outline-offset: 2px;
}

.home-about-heading span {
  display: block;
  margin-bottom: 0.2rem;
  color: var(--hover-action-bg);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.home-about-heading h2 {
  margin: 0;
  font-family: "DM Serif Display", Gelasio, serif;
  font-size: 1.55rem;
  font-weight: 400;
  line-height: 1.1;
}

.home-about-divider {
  display: flex;
  align-items: center;
  height: 1px;
  margin: 1.4rem 0;
  background: var(--border-color);
}

.home-about-divider span {
  width: 3.5rem;
  height: 2px;
  background: var(--hover-action-bg);
}

.home-about-content h3 {
  margin: 0 0 0.8rem;
  font-size: 0.95rem;
  line-height: 1.45;
}

.home-about-copy {
  margin: 0;
  color: var(--muted-text);
  font-family: Gelasio, serif;
  font-size: 0.98rem;
  line-height: 1.75;
}

.home-about-copy::first-letter {
  float: left;
  margin: 0.08em 0.12em 0 0;
  color: var(--app-text);
  font-family: "DM Serif Display", Gelasio, serif;
  font-size: 2.8rem;
  line-height: 0.8;
}

.home-about-link {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin-top: 1.2rem;
  color: var(--hover-action-bg);
  font-size: 0.8rem;
  font-weight: 700;
}

.home-about-link span {
  transition: transform 180ms ease;
}

.home-about-link:hover span {
  transform: translateX(0.25rem);
}

.home-sidebar > div + div {
  margin-top: 3rem;
}

.minimal-post {
  display: grid;
  grid-template-columns: 4rem 1fr;
  gap: 1rem;
  align-items: start;
  padding: 0.75rem 0;
}

.blog-index {
  color: var(--rank-text);
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1;
}

.minimal-post strong {
  display: block;
  line-height: 1.4;
}

.minimal-post small {
  display: block;
  margin-top: 0.35rem;
  color: var(--muted-text);
}

.mobile-about {
  display: none;
}

.archive-page,
.search-page {
  padding: 2.5rem 5vw;
}

.archive-shell,
.search-shell,
.single-post {
  width: min(900px, 100%);
  margin: 0 auto;
}

.archive-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 3rem;
}

.archive-heading h1,
.search-shell h1,
.single-header h1,
.contact-heading h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.25rem);
  line-height: 1.15;
}

.archive-heading span {
  color: var(--archive-span);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.25em;
  text-transform: uppercase;
}

.archive-year {
  margin-bottom: 2.5rem;
}

.archive-year h2 {
  color: var(--archive-year);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
}

.archive-list {
  padding-left: 2rem;
}

.archive-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid transparent;
  padding: 0.65rem 0;
}

.archive-row:hover {
  border-color: var(--border-color);
}

.archive-row a {
  overflow: hidden;
  font-size: 1.15rem;
  font-weight: 600;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.archive-row div,
.archive-book-tags {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  gap: 0.65rem;
}

.archive-category,
.archive-book-tags span {
  border-radius: 9999px;
  padding: 0.35rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}

.archive-row time {
  color: var(--muted-text);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.single-post {
  padding: 2.5rem 5vw;
}

.single-banner {
  aspect-ratio: 16 / 9;
  border-radius: 1rem;
  background: var(--surface-soft);
}

.single-header {
  margin-top: 3rem;
}

.single-meta {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
  margin-top: 2rem;
  color: var(--muted-text);
}

.author-line {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--app-text);
  font-weight: 600;
}

.lastmod {
  font-style: italic;
}

.blog-page-content {
  margin: 3rem 0;
  color: var(--content-text);
  font-family: Gelasio, serif;
  font-size: clamp(1.15rem, 2vw, 1.285rem);
  line-height: 1.8;
}

.blog-page-content h2,
.blog-page-content h3,
.blog-page-content h4,
.blog-page-content h5 {
  color: var(--app-text);
  font-family: Inter, sans-serif;
  line-height: 1.25;
}

.blog-page-content a {
  color: var(--hover-action-bg);
  text-decoration: underline;
}

.blog-page-content img {
  border-radius: 0.75rem;
  margin: 2rem auto 0.5rem;
}

.blog-page-content figure {
  margin: 2rem 0;
}

.blog-page-content figcaption {
  color: var(--muted-text);
  font-size: 1rem;
  text-align: center;
}

.blog-page-content blockquote {
  border-left: 4px solid var(--hover-action-bg);
  background: color-mix(in srgb, var(--hover-action-bg) 10%, transparent);
  margin: 2rem 0;
  padding: 1rem 1.25rem;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
}

.gallery-grid img {
  aspect-ratio: 1;
  height: auto;
  object-fit: cover;
}

.similar-posts {
  margin-top: 4rem;
}

.similar-posts h2 {
  font-size: 1.5rem;
  font-weight: 500;
  margin-bottom: 2.5rem;
}

.similar-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.compact-card {
  display: block;
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  background: var(--surface);
  padding: 0.75rem;
  box-shadow: 0 10px 28px -16px rgba(0, 0, 0, 0.45);
  transition: box-shadow 200ms ease, transform 200ms ease;
}

.compact-card:hover {
  box-shadow: 0 18px 38px -18px rgba(0, 0, 0, 0.5);
}

.compact-card-banner {
  height: 11rem;
  width: 100%;
  overflow: hidden;
  border-radius: 0.75rem;
}

.compact-card-banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.compact-card-body {
  padding: 1rem 0.25rem 0.5rem;
}

.compact-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.compact-card-date {
  margin: 0;
  color: var(--muted-text);
  font-size: 0.875rem;
}

.compact-card-badge {
  border-radius: 9999px;
  background: var(--hover-action-bg);
  color: var(--hover-action-text);
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: capitalize;
}

.compact-card-title {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 500;
  line-height: 1.75rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.compact-card-desc {
  margin: 0.5rem 0 0;
  color: var(--muted-text);
  font-size: 0.875rem;
  line-height: 1.5rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.compact-card-tags {
  display: flex;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.compact-card-tags span {
  border-radius: 9999px;
  background: color-mix(in srgb, var(--hover-action-bg) 10%, transparent);
  color: var(--hover-action-bg);
  border: 1px solid color-mix(in srgb, var(--hover-action-bg) 30%, transparent);
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 500;
}

.search-form {
  margin: 2rem 0;
}

.search-results {
  display: grid;
  gap: 1rem;
}

.search-result {
  display: grid;
  gap: 0.5rem;
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  background: var(--surface);
  padding: 1.25rem;
}

.search-result strong {
  font-size: 1.25rem;
}

.search-result span,
.search-result small,
.empty-state {
  color: var(--muted-text);
}

.about-page,
.contact-page {
  width: min(1152px, 100%);
  margin: 0 auto;
  padding: 2.5rem 5vw;
}

.about-page {
  font-family: Lora, Georgia, serif;
  font-size: 1rem;
  line-height: 1.75;
}

.about-page h2 {
  margin-top: 3rem;
  font-size: 1.65rem;
}

.aplayer {
  background: var(--surface) !important;
  border: 1px solid var(--border-color) !important;
  border-radius: 1rem !important;
  box-shadow: none !important;
  font-family: inherit !important;
  margin: 1.5rem 0 !important;
}

.aplayer .aplayer-body {
  background: var(--surface) !important;
}

.aplayer .aplayer-info {
  border-top-color: var(--border-color) !important;
}

.aplayer .aplayer-info .aplayer-music .aplayer-title {
  color: var(--app-text) !important;
  font-weight: 600 !important;
}

.aplayer .aplayer-info .aplayer-music .aplayer-author {
  color: var(--muted-text) !important;
}

.aplayer .aplayer-info .aplayer-controller .aplayer-time {
  color: var(--muted-text) !important;
}

.aplayer .aplayer-info .aplayer-controller .aplayer-time .aplayer-icon path {
  fill: var(--muted-text) !important;
}

.aplayer .aplayer-info .aplayer-controller .aplayer-time .aplayer-icon:hover path {
  fill: var(--app-text) !important;
}

.aplayer .aplayer-list {
  background: var(--surface) !important;
  border-top: 1px solid var(--border-color) !important;
}

.aplayer .aplayer-list ol li {
  border-top-color: var(--border-color) !important;
  color: var(--app-text) !important;
}

.aplayer .aplayer-list ol li:hover {
  background: var(--surface-soft) !important;
}

.aplayer .aplayer-list ol li.aplayer-list-light {
  background: var(--surface-soft) !important;
}

.aplayer .aplayer-lrc {
  display: none !important;
}

.aplayer .aplayer-lrc:before,
.aplayer .aplayer-lrc:after {
  display: none !important;
  background: none !important;
}

.aplayer .aplayer-info .aplayer-controller .aplayer-bar-wrap .aplayer-bar {
  background: var(--border-color) !important;
}

.aplayer .aplayer-info .aplayer-controller .aplayer-bar-wrap .aplayer-bar .aplayer-loaded {
  background: var(--surface-soft) !important;
}

.aplayer .aplayer-info .aplayer-controller .aplayer-bar-wrap .aplayer-bar .aplayer-played {
  background: var(--hover-action-bg) !important;
}

.aplayer .aplayer-info .aplayer-controller .aplayer-bar-wrap .aplayer-bar .aplayer-played .aplayer-thumb {
  background: var(--hover-action-bg) !important;
}

.aplayer .aplayer-info .aplayer-controller .aplayer-volume-wrap .aplayer-volume-bar-wrap .aplayer-volume-bar {
  background: var(--border-color) !important;
}

.aplayer .aplayer-info .aplayer-controller .aplayer-volume-wrap .aplayer-volume-bar-wrap .aplayer-volume-bar .aplayer-volume {
  background: var(--hover-action-bg) !important;
}

.aplayer .aplayer-pic {
  border-radius: 0.75rem 0 0 0.75rem !important;
}

html[data-theme="dark"] .aplayer {
  background: var(--surface) !important;
}

.music-card,
.terminal-card,
.about-card,
.social-grid a,
.social-grid div {
  border: 1px solid var(--border-color);
  border-radius: 1.25rem;
  background: var(--surface-soft);
}

.music-card {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 2rem;
  padding: 1rem;
}

.music-icon {
  display: grid;
  width: 4rem;
  height: 4rem;
  place-items: center;
  border-radius: 1rem;
  background: var(--hover-action-bg);
  color: var(--hover-action-text);
  font-size: 2rem;
}

.music-progress {
  height: 0.4rem;
  border-radius: 9999px;
  background: var(--surface);
  overflow: hidden;
}

.music-progress span {
  display: block;
  width: 8%;
  height: 100%;
  background: var(--hover-action-bg);
}

.terminal-card {
  background: #2e3440;
  color: #eceff4;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.9rem;
  line-height: 1.65;
  overflow-x: auto;
  padding: 1.5rem;
}

.terminal-card pre {
  margin: 0;
  white-space: pre-wrap;
}

.terminal-dots span {
  display: inline-block;
  width: 0.75rem;
  height: 0.75rem;
  margin-right: 0.35rem;
  border-radius: 9999px;
  background: #bf616a;
}

.terminal-dots span:nth-child(2) {
  background: #ebcb8b;
}

.terminal-dots span:nth-child(3) {
  background: #a3be8c;
}

.about-card-muted {
  border-left: 4px solid var(--app-text);
  background: var(--surface-soft);
  border-radius: 0.75rem;
  padding: 1rem;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.about-card {
  display: grid;
  gap: 0.35rem;
  padding: 1rem;
}

.about-card small,
.about-card span {
  color: var(--muted-text);
}

.hardware-list {
  padding: 1.5rem 1.5rem 1.5rem 2.5rem;
}

.contact-heading {
  margin-bottom: 3rem;
  text-align: center;
}

.contact-heading p {
  width: min(640px, 100%);
  margin: 1.5rem auto 0;
  color: var(--muted-text);
  font-family: Gelasio, serif;
  font-size: 1.2rem;
  line-height: 1.7;
}

.social-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(210px, 1fr));
  gap: 1rem;
}

.social-grid a,
.social-grid div {
  display: flex;
  position: relative;
  min-width: 0;
  min-height: 15.625rem;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  overflow: hidden;
  border-radius: 0.5rem;
  padding: 1.5rem;
  text-align: center;
}

.social-card {
  background: #f0f4f8 !important;
  border-color: #e2e8f0 !important;
  transition: box-shadow 300ms ease, transform 300ms ease, border-color 300ms ease;
}

.social-card:not(.social-card-static):hover {
  border-color: color-mix(in srgb, #5e81ac 45%, #e2e8f0) !important;
  box-shadow: 0 18px 38px rgb(15 23 42 / 0.14);
  transform: translateY(-0.5rem);
}

.social-icon-box {
  display: grid;
  width: 4rem;
  height: 4rem;
  place-items: center;
  flex: 0 0 4rem;
  margin-bottom: 1rem;
  border: 1px solid rgb(107 107 107 / 0.12);
  border-radius: 0.5rem;
  background: rgb(255 255 255 / 0.55);
  font-size: 1.75rem;
  transition: background 300ms ease, color 300ms ease;
}

.substack-icon {
  position: relative;
  display: block;
  width: 1.65rem;
  height: 1.5rem;
  border-top: 0.2rem solid currentColor;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0 0.25rem,
    currentColor 0.25rem 0.43rem,
    transparent 0.43rem 0.66rem,
    currentColor 0.66rem 0.84rem,
    transparent 0.84rem
  );
}

.substack-icon::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 0.55rem;
  background: currentColor;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 50% 62%, 0 100%);
  content: "";
}

.social-card:not(.social-card-static):hover .social-icon-box {
  background: rgb(94 129 172 / 0.1);
  color: #5e81ac;
}

.social-grid strong {
  margin-bottom: 0.25rem;
  font-size: 1.15rem;
}

.social-handle {
  max-width: 100%;
  color: #6b6b6b;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  overflow-wrap: anywhere;
  transition: color 300ms ease;
}

.social-card:not(.social-card-static):hover .social-handle {
  color: #5e81ac;
}

.social-action {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  min-height: 1rem;
  margin-top: 1rem;
  color: #5e81ac;
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  opacity: 0;
  text-transform: uppercase;
  transition: opacity 300ms ease;
}

.social-card:hover .social-action,
.social-card-static .social-action {
  opacity: 1;
}

.social-card-static {
  opacity: 0.9;
}

html[data-theme="dark"] .social-card {
  background: color-mix(in srgb, #88c0d0 12%, transparent) !important;
  border-color: color-mix(in srgb, #88c0d0 25%, transparent) !important;
}

html[data-theme="dark"] .social-icon-box {
  background: rgb(255 255 255 / 0.05);
  border-color: rgb(255 255 255 / 0.08);
}

html[data-theme="dark"] .social-handle {
  color: var(--muted-text);
}

.contact-cta {
  margin-top: 4rem;
  border-radius: 0.5rem;
  background: #242424;
  color: #ffffff;
  padding: 3rem;
  text-align: center;
}

.contact-cta p {
  color: #bfbfbf;
}

.contact-cta a,
.button-link {
  display: inline-flex;
  border-radius: 9999px;
  background: #ffffff;
  color: #242424;
  margin-top: 1rem;
  padding: 0.85rem 1.4rem;
  font-weight: 700;
}

.not-found {
  display: grid;
  min-height: calc(100vh - 80px);
  place-items: center;
  align-content: center;
  gap: 1rem;
  padding: 2rem;
  text-align: center;
}

.not-found-mark {
  color: var(--hover-action-bg);
  font-size: clamp(5rem, 20vw, 12rem);
  font-weight: 800;
  line-height: 1;
}

.app-footer {
  border-top: 1px solid var(--border-color);
  background: linear-gradient(to bottom, color-mix(in srgb, var(--surface) 88%, var(--app-bg) 12%), color-mix(in srgb, var(--surface-soft) 78%, var(--app-bg) 22%), var(--app-bg));
}

.footer-section {
  padding: 3rem 5vw;
}

.app-footer-card {
  width: min(1280px, 100%);
  margin: 0 auto;
  border: 1px solid var(--border-color);
  border-radius: 1.5rem;
  background: color-mix(in srgb, var(--surface) 95%, transparent);
  padding: 2rem;
  box-shadow: 0 28px 80px -32px rgb(0 0 0 / 0.42);
}

.footer-top,
.footer-bottom {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
}

.footer-copy {
  max-width: 32rem;
  color: var(--muted-text);
  line-height: 1.7;
}

.footer-contact,
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-contact a,
.footer-bottom,
.footer-bottom a {
  color: var(--muted-text);
}

.footer-nav a {
  border: 1px solid color-mix(in srgb, var(--app-text) 12%, transparent);
  border-radius: 9999px;
  color: var(--muted-text);
  padding: 0.65rem 1rem;
}

.footer-nav a:hover,
.footer-nav a.is-active,
.footer-nav a[aria-current="page"] {
  border-color: var(--hover-action-bg);
  background: var(--hover-action-bg);
  color: var(--hover-action-text);
}

.footer-nav a.is-active,
.footer-nav a[aria-current="page"] {
  font-weight: 600;
}

.footer-divider {
  height: 1px;
  margin: 1.75rem 0;
  background: linear-gradient(to right, transparent, color-mix(in srgb, var(--app-text) 22%, transparent), transparent);
}

.comments-section {
  border: 1px solid var(--border-color);
  border-radius: 1.25rem;
  background: var(--surface);
  margin-top: 4rem;
  padding: 1.5rem;
}

.comments-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.comments-header h2 {
  margin: 0;
  color: var(--app-text);
  font-size: 1.6rem;
}

.comments-header p,
.comments-message,
.comment-form-footer,
.comment-author time {
  color: var(--muted-text);
}

.comments-auth,
.comment-form-footer {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.comments-button {
  border: 0;
  border-radius: 9999px;
  background: var(--hover-action-bg);
  color: var(--hover-action-text);
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  padding: 0.8rem 1.1rem;
}

.comments-button.secondary {
  background: var(--surface-soft);
  color: var(--app-text);
}

.comments-button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.comments-user {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-radius: 1rem;
  background: var(--surface-soft);
  margin-top: 1rem;
  padding: 0.85rem 1rem;
}

.comments-user img,
.comments-user span,
.comment-author img,
.comment-author > span {
  display: grid;
  width: 2.5rem;
  height: 2.5rem;
  place-items: center;
  border-radius: 9999px;
  background: var(--hover-action-bg);
  color: var(--hover-action-text);
  flex: 0 0 auto;
  font-weight: 800;
  object-fit: cover;
}

.comments-user p,
.comment-item-public p {
  margin: 0;
}

.comment-form {
  display: grid;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.comment-form label {
  font-weight: 700;
}

.comment-form textarea {
  width: 100%;
  resize: vertical;
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  background: var(--surface-soft);
  color: var(--app-text);
  font: inherit;
  line-height: 1.6;
  min-height: 8rem;
  padding: 1rem;
}

.comment-form textarea:focus {
  border-color: var(--hover-action-bg);
  outline: 2px solid color-mix(in srgb, var(--hover-action-bg) 25%, transparent);
}

.comment-form-footer {
  justify-content: space-between;
}

.comments-message {
  margin: 1.25rem 0 0;
}

.comments-list {
  display: grid;
  gap: 1rem;
  margin-top: 1.25rem;
}

.comment-item-public {
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  background: var(--surface-soft);
  padding: 1rem;
}

.comment-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
}

.comment-author strong,
.comment-author time {
  display: block;
}

.comment-author time {
  font-size: 0.82rem;
  margin-top: 0.2rem;
}

@media (max-width: 900px) {
  .home-layout {
    display: block;
  }

  .home-sidebar {
    display: none;
  }

  .mobile-about {
    display: block;
    margin-top: 2rem;
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
  }

  .mobile-about .home-about-content {
    width: min(38rem, 100%);
  }

  .nav-links {
    display: none;
  }

  .mobile-search-toggle {
    display: grid;
  }

  .nav-search {
    position: absolute;
    top: 80px;
    left: 0;
    display: none;
    width: 100%;
    background: var(--surface);
    padding: 1rem 5vw;
  }

  .nav-search.is-open {
    display: block;
  }

  .similar-grid,
  .about-grid {
    grid-template-columns: 1fr;
  }

  .social-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .archive-row,
  .single-meta,
  .footer-top,
  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }

  .archive-list {
    padding-left: 0;
  }

  .archive-row div {
    flex-wrap: wrap;
  }

  .comments-header,
  .comments-auth,
  .comment-form-footer {
    align-items: stretch;
    flex-direction: column;
  }

  .comments-button {
    width: 100%;
  }
}

@media (max-width: 520px) {
  .site-pagination {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pagination-pages {
    grid-row: 1;
    grid-column: 1 / -1;
    justify-content: center;
  }

  .pagination-direction:first-child {
    grid-row: 2;
    grid-column: 1;
  }

  .pagination-direction:last-child {
    grid-row: 2;
    grid-column: 2;
  }

  .social-grid {
    grid-template-columns: 1fr;
  }

  .contact-cta {
    padding: 2rem 1.25rem;
  }
}