/* blg default theme
 * A quiet, readable design that works for any blog.
 * MIT License
 */

*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --bg: #faf9f7;
  --bg-subtle: #f3f1ed;
  --text: #2d2d2d;
  --text-muted: #6b6b6b;
  --accent: #5a6f64;
  --accent-hover: #3d4d44;
  --rule: #ddd9d3;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Monaco, "Cascadia Mono", monospace;
  --measure: 65ch;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
}

html {
  font-size: 18px;
  -webkit-text-size-adjust: 100%;
  scrollbar-gutter: stable;
}

body {
  margin: 0;
  padding: var(--space-lg);
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.65;
}

/* Layout */
body {
  max-width: calc(var(--measure) + var(--space-xl) * 2);
  margin-inline: auto;
}

main {
  padding-block: var(--space-lg);
}

/* Site header */
.site-header {
  padding-block: var(--space-xl) var(--space-lg);
  text-align: center;
}

site-title {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-xs);
}

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

tag-line {
  display: block;
  color: var(--text-muted);
  font-size: 1.1rem;
  font-style: italic;
}

/* Navigation */
nav {
  border-bottom: 1px solid var(--rule);
  padding-bottom: var(--space-md);
}

nav > ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0 var(--space-md);
}

nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  line-height: 1;
  transition: color 0.15s;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
}

nav a::before,
nav a::after {
  content: attr(data-text);
  height: 0;
  visibility: hidden;
  overflow: hidden;
  pointer-events: none;
}

nav a::before {
  font-weight: 400;
}

nav a::after {
  font-weight: 600;
}

nav a:hover,
nav a.active {
  color: var(--text);
}

nav a.active {
  font-weight: 600;
}

/* Links */
a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
  transition: color 0.15s;
}

a:hover {
  color: var(--accent-hover);
}

/* External links */
a.external::after {
  content: "";
  display: inline-block;
  width: 0.75em;
  height: 0.75em;
  margin-left: 0.2em;
  background: currentColor;
  vertical-align: middle;
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2'%3E%3Cpath d='M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h6'/%3E%3Cpolyline points='15 3 21 3 21 9'/%3E%3Cline x1='10' y1='14' x2='21' y2='3'/%3E%3C/svg%3E");
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2'%3E%3Cpath d='M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h6'/%3E%3Cpolyline points='15 3 21 3 21 9'/%3E%3Cline x1='10' y1='14' x2='21' y2='3'/%3E%3C/svg%3E");
  -webkit-mask-size: contain;
  mask-size: contain;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
  margin-block: 0;
  line-height: 1.3;
  font-weight: 600;
}

h1 {
  font-size: 1.75rem;
  margin-bottom: var(--space-md);
}

h2 {
  font-size: 1.35rem;
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}

h3 {
  font-size: 1.1rem;
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
}

/* Post list */
.post-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.post-list > li {
  padding-block: var(--space-lg);
  border-bottom: 1px solid var(--rule);
}

.post-list > li:first-child {
  padding-top: 0;
}

.post-list > li:last-child {
  border-bottom: none;
}

.post-list article {
  display: grid;
  gap: var(--space-sm);
}

.post-list h2 {
  margin: 0;
  font-size: 1.25rem;
}

.post-list h2 a {
  color: var(--text);
  text-decoration: none;
}

.post-list h2 a:hover {
  color: var(--accent);
}

/* Time/date */
time {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

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

.tags a {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-decoration: none;
  background: var(--bg-subtle);
  padding: 0.15em 0.5em;
  border-radius: 3px;
  transition: background 0.15s, color 0.15s;
}

.tags a:hover {
  background: var(--rule);
  color: var(--text);
}

/* Preview */
.preview {
  color: var(--text);
}

.preview h1 {
  font-size: 1.25rem;
  margin-bottom: var(--space-xs);
}

.preview h1 a {
  color: var(--text);
  text-decoration: none;
}

.preview h1 a:hover {
  color: var(--accent);
}

.preview p {
  margin-block: var(--space-sm);
  color: var(--text-muted);
}

.preview > *:first-child {
  margin-top: 0;
}

.preview > *:last-child {
  margin-bottom: 0;
}

/* Read more link */
a.read-more {
  font-size: 0.9rem;
}

/* Single post/page */
article.post,
article.page {
  display: grid;
  gap: var(--space-md);
}

article.post time,
article.page time {
  margin-bottom: var(--space-sm);
}

/* Content area (markdown output) */
.content {
  line-height: 1.7;
}

.content > *:first-child {
  margin-top: 0;
}

.content > *:last-child {
  margin-bottom: 0;
}

.content p {
  margin-block: var(--space-md);
}

.content ul,
.content ol {
  margin-block: var(--space-md);
  padding-left: 1.5em;
}

.content li {
  margin-block: var(--space-xs);
}

.content li > ul,
.content li > ol {
  margin-block: var(--space-xs);
}

.content blockquote {
  margin: var(--space-lg) 0;
  padding-left: var(--space-md);
  border-left: 3px solid var(--rule);
  color: var(--text-muted);
  font-style: italic;
}

.content blockquote p {
  margin: 0;
}

.content pre {
  margin-block: var(--space-lg);
  padding: var(--space-md);
  background: var(--bg-subtle);
  border-radius: 4px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.5;
}

.content code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--bg-subtle);
  padding: 0.15em 0.35em;
  border-radius: 3px;
}

.content pre code {
  background: none;
  padding: 0;
  font-size: 1em;
}

.content hr {
  border: none;
  border-top: 1px solid var(--rule);
  margin-block: var(--space-xl);
}

.content img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
}

.content table {
  width: 100%;
  border-collapse: collapse;
  margin-block: var(--space-lg);
  font-size: 0.95rem;
}

.content th,
.content td {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--rule);
  text-align: left;
}

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

/* Pagination */
.pagination {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-xs);
  padding-top: var(--space-lg);
  margin-top: var(--space-lg);
  border-top: 1px solid var(--rule);
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2em;
  padding: var(--space-xs) var(--space-sm);
  font-size: 0.9rem;
  text-decoration: none;
  border-radius: 3px;
}

.pagination a {
  color: var(--text-muted);
  transition: background 0.15s, color 0.15s;
}

.pagination a:hover {
  background: var(--bg-subtle);
  color: var(--text);
}

.pagination .current {
  background: var(--accent);
  color: var(--bg);
  font-weight: 600;
}

.pagination .disabled {
  color: var(--rule);
}

.pagination .ellipsis {
  color: var(--text-muted);
}

/* Responsive */
@media (max-width: 600px) {
  html {
    font-size: 16px;
  }

  body {
    padding: var(--space-md);
  }

  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.2rem;
  }

  .post-list h2,
  .preview h1 {
    font-size: 1.15rem;
  }
}

/* Footer navigation */
footer {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--rule);
}

footer nav {
  border-bottom: none;
  padding-bottom: 0;
}

.footer-nav > ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0 var(--space-md);
}

.footer-nav li {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-nav a {
  color: inherit;
  text-decoration: none;
  transition: color 0.15s;
  display: inline;
}

.footer-nav a::before,
.footer-nav a::after {
  display: none;
}

.footer-nav a:hover {
  color: var(--text);
}


/* Nested menu styling */
nav > ul > li:has(ul) {
  display: contents;
}

nav > ul > li:has(ul) > a::after {
  content: "›";
  display: inline-block;
  margin-left: 0.2em;
  font-size: 0.8em;
  opacity: 0.4;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

nav > ul > li:has(> a.active) > a::after,
nav > ul > li:has(ul a.active) > a::after {
  transform: rotate(90deg);
  opacity: 0.6;
}

nav > ul ul {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0 var(--space-sm);
  list-style: none;
  margin: var(--space-xs) 0 0 0;
  padding: 0;
  width: 100%;
  order: 99;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.2s ease, opacity 0.15s ease;
}


nav > ul ul a {
  color: var(--text-muted);
  position: relative;
}


nav > ul ul a:hover,
nav > ul ul a.active {
  color: var(--text);
}

nav > ul ul a.active {
  font-weight: 600;
}

/* Show submenu when parent or any child is active */
nav > ul > li:has(> a.active) ul,
nav > ul > li:has(ul a.active) ul {
  max-height: 2rem;
  opacity: 1;
}

/* Print */
@media print {
  body {
    background: white;
    color: black;
    max-width: none;
    padding: 0;
  }

  nav,
  .pagination,
  .read-more {
    display: none;
  }

  a {
    color: inherit;
    text-decoration: underline;
  }
}

/* Dark mode (respects system preference) */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1a1a;
    --bg-subtle: #252525;
    --text: #e0e0e0;
    --text-muted: #999;
    --accent: #8fb5a5;
    --accent-hover: #b5d4c8;
    --rule: #333;
  }
}