:root {
  --font-mono: 'Monaco', 'Menlo', 'Consolas', 'Liberation Mono', 'Courier New', monospace;
  --color-text: #374151;
  --color-text-dark: #111827;
  --color-text-light: #6b7280;
  --color-heading: #0369a1;
  --color-bg: #ffffff;
  --color-border: #d1d5db;
  --color-link: #111827;
  --color-accent: #1d4ed8;
  --color-code-bg: #f3f4f6;
  --max-width: 860px;
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 4rem;
}

html.dark {
  --color-text: #d1d5db;
  --color-text-dark: #f9fafb;
  --color-text-light: #9ca3af;
  --color-heading: #38bdf8;
  --color-bg: #111827;
  --color-border: #374151;
  --color-link: #f9fafb;
  --color-accent: #60a5fa;
  --color-code-bg: #1f2937;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 18px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-bg);
  margin: 0;
}

.container {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  padding: var(--spacing-md);
  box-sizing: border-box;
}

.antialiased {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
}

.content {
  flex: 1;
}

.content {
  width: 100%;
  max-width: var(--max-width);
  margin-top: var(--spacing-sm);
  padding: 0 var(--spacing-md);
  flex: 1;
}

.site-footer {
  width: 100%;
  max-width: var(--max-width);
  padding: var(--spacing-sm) var(--spacing-md);
}

@media (min-width: 640px) {
  .content {
    padding: 0;
  }
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  color: var(--color-heading);
  margin-bottom: var(--spacing-sm);
}

h1 { font-size: 1.75rem; }
h2 { font-size: 1.4rem; margin-top: var(--spacing-xl); }
h3 { font-size: 1.15rem; }

a {
  color: var(--color-link);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  transition: text-decoration-thickness 0.15s ease;
}

a:hover {
  text-decoration-thickness: 2px;
}

.site-title {
  font-size: 1.5rem;
  margin-bottom: 0;
  margin-left: calc(-1 * var(--spacing-lg));
}

.site-subtitle {
  font-size: 0.875rem;
  margin-bottom: var(--spacing-md);
}

.tagline {
  font-weight: 700;
  margin-left: calc(-1 * var(--spacing-lg));
}

ul {
  list-style-type: disc;
  padding-left: 0;
}

.about-list, .nav-list, .social-list {
  list-style-type: none;
}

.about-list > li, .nav-list > li, .social-list > li {
  margin-bottom: 0.5rem;
  line-height: 1.6;
  padding-left: 1.2rem;
  text-indent: -1.2rem;
}

.about-list > li::before, .nav-list > li::before, .social-list > li::before {
  content: "•";
  padding-right: 0.5rem;
  color: var(--color-text-light);
}

.nested-list {
  list-style-type: lower-greek;
  margin-left: 0;
  margin-top: 0;
}

.nested-list > li {
  margin-bottom: 0.25rem;
  padding-left: 0;
  text-indent: 0;
}

.about-list > li {
  margin-bottom: 0.5rem;
  line-height: 1.6;
}

.about-list > li {
  padding-left: 1.2rem;
  text-indent: -1.2rem;
}

.about-list > li::before {
  content: "•";
  padding-right: 0.5rem;
  color: var(--color-text-light);
}

.about-list > li {
  margin-bottom: var(--spacing-sm);
}

.nested-list {
  list-style-type: lower-greek;
  margin-left: var(--spacing-xl);
  margin-top: var(--spacing-sm);
}

.nested-list > li {
  margin-bottom: var(--spacing-sm);
  text-indent: 0;
  padding-left: 0;
}

.divider {
  border-top: 1px solid var(--color-border);
  margin: var(--spacing-md) 0;
  margin-left: calc(-1 * var(--spacing-lg));
}



.nav-link {
  text-decoration: underline;
  text-decoration-thickness: 1px;
}

.nav-link:hover {
  text-decoration-thickness: 2px;
}

.social-icons {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: 1.2rem;
  margin-bottom: var(--spacing-sm);
}

.social-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem;
  color: var(--color-text);
  text-decoration: none;
  transition: color 0.2s ease, transform 0.2s ease;
}

.social-icon:hover {
  color: var(--color-text-dark);
  transform: rotate(6deg);
  text-decoration: none;
}

.social-icon svg {
  width: 1.5rem;
  height: 1.5rem;
  stroke: currentColor;
  stroke-width: 2;
  fill: transparent;
  opacity: 0.9;
}

.social-icon:hover svg {
  opacity: 1;
}

.section-title {
  font-size: 1rem;
  font-weight: 700;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  margin-left: calc(-1 * var(--spacing-lg));
}

.post-list {
  list-style: none;
  padding-left: 0;
}

.post-item {
  display: flex;
  flex-direction: column;
  margin-bottom: var(--spacing-sm);
}

@media (min-width: 640px) {
  .post-item {
    flex-direction: row;
    align-items: baseline;
    gap: var(--spacing-md);
  }
}

.post-date {
  color: var(--color-text-light);
  font-size: 0.8125rem;
  flex-shrink: 0;
}

.post-link {
  color: var(--color-heading);
}

.post-link:hover {
  color: var(--color-heading);
  opacity: 0.8;
}

.view-all {
  display: inline-block;
  margin-top: var(--spacing-md);
  font-size: 0.875rem;
}

.post-header {
  margin-bottom: var(--spacing-xl);
}

.post-title {
  font-size: 1.5rem;
  line-height: 1.3;
  margin-bottom: var(--spacing-sm);
}

.post-meta {
  color: var(--color-text-light);
  font-size: 0.8125rem;
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.post-meta > *:not(:last-child)::after {
  content: " · ";
  margin-left: var(--spacing-sm);
}

.post-tags {
  margin-top: var(--spacing-sm);
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.tag {
  color: var(--color-text-light);
  font-size: 0.8125rem;
}

.post-content {
  line-height: 1.75;
}

.post-content p {
  margin-bottom: 1.25rem;
}

.post-content h2 {
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-xs);
  border-bottom: 1px solid var(--color-border);
}

.post-content h3 {
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

.post-content ul,
.post-content ol {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-lg);
}

.post-content li {
  margin-bottom: var(--spacing-xs);
}

.post-content pre {
  background-color: var(--color-code-bg);
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  overflow-x: auto;
  margin-bottom: var(--spacing-md);
  font-size: 0.8125rem;
  line-height: 1.5;
}

.post-content code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background-color: var(--color-code-bg);
  padding: 0.125rem 0.375rem;
  border-radius: 3px;
}

.post-content pre code {
  background: none;
  padding: 0;
}

.post-content blockquote {
  border-left: 3px solid var(--color-border);
  padding-left: var(--spacing-md);
  margin: var(--spacing-md) 0;
  color: var(--color-text-light);
  font-style: italic;
}

.post-content img {
  max-width: 100%;
  height: auto;
  margin: var(--spacing-md) 0;
  border-radius: 4px;
}

.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--spacing-md);
  font-size: 0.875rem;
}

.post-content th,
.post-content td {
  border: 1px solid var(--color-border);
  padding: var(--spacing-sm);
  text-align: left;
}

.post-content th {
  background-color: var(--color-code-bg);
  font-weight: 600;
}

.toc {
  background-color: var(--color-code-bg);
  padding: var(--spacing-md);
  border-radius: 4px;
  margin-bottom: var(--spacing-xl);
}

.toc h2 {
  font-size: 0.875rem;
  margin-top: 0;
  margin-bottom: var(--spacing-sm);
}

.toc ul {
  list-style: none;
  padding-left: var(--spacing-md);
}

.toc li {
  margin-bottom: var(--spacing-xs);
}

.toc a {
  color: var(--color-text);
  font-size: 0.8125rem;
}

.post-footer {
  margin-top: var(--spacing-2xl);
}

.post-footer-divider {
  border-top: 1px solid var(--color-border);
  margin: var(--spacing-lg) 0;
}

.post-footer .post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.post-footer .tag {
  color: var(--color-accent);
  text-decoration: none;
  font-size: 0.875rem;
}

.post-footer .tag:hover {
  text-decoration: underline;
}

.share-section {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.share-label {
  color: var(--color-text-light);
  font-size: 0.875rem;
}

.share-buttons {
  display: flex;
  gap: var(--spacing-sm);
}

.share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem;
  color: var(--color-text);
  text-decoration: none;
  transition: color 0.2s ease;
}

.share-btn:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.share-btn svg {
  stroke: currentColor;
}

.back-to-top {
  display: inline-block;
  color: var(--color-text-light);
  font-size: 0.875rem;
  text-decoration: none;
  margin-bottom: var(--spacing-lg);
}

.back-to-top:hover {
  color: var(--color-text-dark);
  text-decoration: underline;
}

.post-nav {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

@media (min-width: 640px) {
  .post-nav {
    flex-direction: row;
    justify-content: space-between;
  }
}

.prev-post,
.next-post {
  display: flex;
  flex-direction: column;
  text-decoration: none;
}

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

.nav-label {
  font-size: 0.75rem;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.nav-title {
  color: var(--color-accent);
  font-size: 0.9375rem;
}

.prev-post:hover .nav-title,
.next-post:hover .nav-title {
  text-decoration: underline;
}

.page-header {
  margin-bottom: var(--spacing-xl);
}

.page-title {
  font-size: 1.5rem;
  margin-left: calc(-1 * var(--spacing-lg));
}

.page-desc {
  color: var(--color-text-light);
  margin-top: var(--spacing-sm);
}

.site-footer {
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  font-size: 0.8125rem;
  color: var(--color-text-light);
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.separator {
  color: var(--color-border);
}

.highlight {
  margin-bottom: var(--spacing-md);
}

.highlight pre {
  margin: 0;
}

@media (max-width: 639px) {
  .site-title,
  .tagline,
  .section-title,
  .page-title,
  .divider {
    margin-left: 0;
  }
}

.top-nav {
  width: 100%;
  max-width: var(--max-width);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) 0;
}

.site-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-dark);
  text-decoration: none;
}

.site-name:hover {
  text-decoration: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav-links > a {
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.9375rem;
}

.nav-links > a:hover {
  color: var(--color-text-dark);
  text-decoration: none;
}

.nav-icons {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-left: var(--spacing-sm);
}

.lang-link {
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.9375rem;
}

.lang-link:hover {
  color: var(--color-text-dark);
  text-decoration: none;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  padding: 0;
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--color-text);
  transition: color 0.2s ease;
}

.nav-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  padding: 0;
  color: var(--color-text);
  transition: color 0.2s ease;
}

.nav-icon:hover {
  color: var(--color-text-dark);
}

.theme-toggle:hover {
  color: var(--color-text-dark);
}

.theme-toggle svg {
  width: 1.25rem;
  height: 1.25rem;
  stroke: currentColor;
}

.theme-toggle .icon-sun {
  display: none;
}

.theme-toggle .icon-moon {
  display: block;
}

html.dark .theme-toggle .icon-sun {
  display: block;
}

html.dark .theme-toggle .icon-moon {
  display: none;
}

.nav-divider {
  width: 100%;
  max-width: var(--max-width);
  border-top: 1px solid var(--color-border);
}

.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-lg);
  padding: var(--spacing-xl) 0;
}

@media (min-width: 640px) {
  .hero {
    flex-direction: row;
    align-items: flex-start;
  }
}

.avatar-link {
  display: block;
  flex-shrink: 0;
}

.avatar {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  object-fit: cover;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.avatar-link:hover .avatar {
  transform: scale(1.05);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.hero-content {
  flex: 1;
  text-align: center;
}

@media (min-width: 640px) {
  .hero-content {
    text-align: left;
  }
}

.hero-title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
  margin-top: 0;
}

.hero-desc {
  color: var(--color-text);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

.hero .social-icons {
  margin-left: 0;
  justify-content: center;
}

@media (min-width: 640px) {
  .hero .social-icons {
    justify-content: flex-start;
  }
}

.hero-divider {
  border-top: 1px solid var(--color-border);
  margin: var(--spacing-md) 0 var(--spacing-xl) 0;
}

.post-card {
  margin-bottom: var(--spacing-xl);
}

.post-card .post-title {
  display: block;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-heading);
  text-decoration: none;
  margin-bottom: var(--spacing-xs);
}

.post-card .post-title:hover {
  text-decoration: underline;
}

.post-card .post-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--color-text-light);
  font-size: 0.8125rem;
  margin-bottom: var(--spacing-sm);
}

.post-card .post-meta::after {
  content: none;
}

.post-card .post-meta > *:not(:last-child)::after {
  content: none;
}

.post-card .post-meta svg {
  width: 1rem;
  height: 1rem;
  stroke: currentColor;
  flex-shrink: 0;
}

.post-reading-time {
  font-style: italic;
}

.post-summary {
  color: var(--color-text);
  line-height: 1.6;
  margin: 0;
}

.view-all-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--color-text);
  text-decoration: none;
  margin-top: var(--spacing-md);
}

.view-all-link:hover {
  color: var(--color-text-dark);
  text-decoration: none;
}

.view-all-link svg {
  width: 1.25rem;
  height: 1.25rem;
  stroke: currentColor;
}

.site-header {
  width: 100%;
  max-width: var(--max-width);
  padding: var(--spacing-sm) var(--spacing-md);
  display: flex;
  justify-content: flex-end;
}

.language-switcher {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.9375rem;
}

.lang-current {
  color: var(--color-text-dark);
  font-weight: 600;
}

.lang-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 2rem;
  padding: 0 0.5rem;
  color: var(--color-text);
  text-decoration: none;
}

.lang-link:hover {
  color: var(--color-text-dark);
}

.posts-grid {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

@media (min-width: 768px) {
  .posts-grid {
    flex-direction: row;
    align-items: flex-start;
  }
  
  .posts-grid .posts-section {
    flex: 1;
    margin-top: 0;
  }
}

.posts-section {
  
}

.empty-hint {
  color: var(--color-text-light);
  font-style: italic;
}

/* Reading Progress Bar */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--color-accent);
  width: 0%;
  z-index: 9999;
  transition: width 0.1s ease;
}

/* View Transitions */
@view-transition {
  navigation: auto;
}

::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: 0.3s;
}

.post-title {
  view-transition-name: var(--vt-name, none);
}

.swup-transition-main {
  transition: opacity 0.25s ease;
}

html.is-animating .swup-transition-main {
  opacity: 0;
}

html.is-leaving .swup-transition-main {
  opacity: 0;
}

html.is-rendering .swup-transition-main {
  opacity: 1;
}