:root {
  --bg: #f7f8f5;
  --card: #ffffff;
  --text: #1a1f1c;
  --muted: #47534c;
  --line: #dbe2dd;
  --accent: #006d5b;
  --control-bg: #eef2ef;
  --control-text: #1a1f1c;
}

* {
  box-sizing: border-box;
}

html {
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.55;
  background: var(--bg);
  color: var(--text);
}

[data-theme="dark"] {
  --bg: #121715;
  --card: #18211d;
  --text: #edf5f0;
  --muted: #b9c7be;
  --line: #2a3932;
  --accent: #4fd0b7;
  --control-bg: #22302a;
  --control-text: #edf5f0;
}

[data-theme="sepia"] {
  --bg: #f7f2e8;
  --card: #fffaf0;
  --text: #2f2719;
  --muted: #6d5e47;
  --line: #e1d5bf;
  --accent: #a25600;
  --control-bg: #f3e6cf;
  --control-text: #2f2719;
}

body {
  margin: 0;
}

.wrap {
  width: min(980px, 92vw);
  margin: 0 auto;
}

.skip-link {
  position: absolute;
  left: -9999px;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  background: #fff;
  border: 1px solid var(--line);
  padding: 0.5rem;
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--card);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 1rem;
  padding: 0.9rem 0;
  flex-wrap: wrap;
}

.brand {
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.menu {
  list-style: none;
  display: flex;
  margin: 0;
  padding: 0;
  gap: 1rem;
  flex-wrap: wrap;
}

.menu a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.menu a:hover,
.menu a:focus,
a:hover,
a:focus {
  color: var(--accent);
  border-color: currentColor;
}

.main-nav {
  margin-right: auto;
}

.search-form input {
  width: min(220px, 60vw);
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--text);
  border-radius: 0.35rem;
  padding: 0.4rem 0.55rem;
}

.btn-control,
.copy-btn,
.back-to-top {
  border: 1px solid var(--line);
  background: var(--control-bg);
  color: var(--control-text);
  border-radius: 0.35rem;
  padding: 0.35rem 0.6rem;
  font-size: 0.85rem;
  cursor: pointer;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.no-js .js-only {
  display: none !important;
}

.search-results {
  display: none;
  margin-top: 1.25rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  padding: 0.6rem 0.9rem;
}

.search-results.active {
  display: block;
}

body.is-searching #page-content {
  display: none;
}

.hero {
  padding: 2rem 0 1rem;
}

.hero h1,
.page-header h1 {
  margin: 0 0 0.5rem;
  line-height: 1.2;
}

.page-header {
  padding-top: 0.85rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin: 1rem 0 2rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 1rem;
}

.card h2 {
  margin-top: 0;
  font-size: 1.1rem;
}

.entry-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.entry-list li {
  border-top: 1px solid var(--line);
  padding: 1rem 0;
}

.entry-list li:first-child {
  border-top: 0;
}

.entry-list h2 {
  margin: 0 0 0.3rem;
  font-size: 1.2rem;
}

.meta {
  margin: 0 0 0.4rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.tag-inline,
.tag-filter-list {
  list-style: none;
  margin: 0.45rem 0 0.4rem;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.tag-inline li,
.tag-filter-list li {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.tag-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--control-bg);
  color: var(--control-text);
  text-decoration: none;
  font-size: 0.86rem;
  padding: 0.15rem 0.55rem;
}

.tag-pill:hover,
.tag-pill:focus {
  color: var(--control-text);
  border-color: var(--accent);
}

.tag-pill.is-active {
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
}

.tag-pill.is-active:hover,
.tag-pill.is-active:focus {
  color: #ffffff;
}

.tag-count {
  opacity: 0.85;
}

.tag-filter {
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  background: var(--card);
  padding: 0.75rem 0.9rem;
  margin: 0.7rem 0 1rem;
}

.tag-filter-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.tag-filter-head h2 {
  margin: 0;
  font-size: 1rem;
}

.tag-feed-links {
  display: inline-flex;
  gap: 0.6rem;
}

.tag-rss-link {
  font-size: 0.86rem;
  white-space: nowrap;
}

.tag-directory {
  list-style: none;
  margin: 0;
  padding: 0;
}

.tag-directory li {
  border-top: 1px solid var(--line);
  padding: 0.85rem 0;
}

.tag-directory li:first-child {
  border-top: 0;
}

.tag-directory h2 {
  margin: 0 0 0.25rem;
  font-size: 1.1rem;
}

.prose p,
.prose li {
  max-width: 72ch;
}

.prose :not(pre) > code {
  font-family: "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;
  background: var(--control-bg);
  color: var(--control-text);
  border: 1px solid var(--line);
  border-radius: 0.3rem;
  padding: 0.08rem 0.35rem;
  font-size: 0.92em;
}

.highlight {
  margin: 1rem 0 1.25rem;
  position: relative;
}

.highlight pre,
.prose pre {
  font-family: "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 0.92rem;
  line-height: 1.55;
  border-radius: 0.5rem;
  border: 1px solid #314138;
  padding: 0.95rem 1rem;
  overflow-x: auto;
}

.copy-btn {
  position: absolute;
  right: 0.5rem;
  top: 0.5rem;
}

.toc-block {
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  background: var(--card);
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  max-width: 72ch;
}

.toc-block h2 {
  font-size: 1rem;
  margin: 0 0 0.45rem;
}

.toc-block nav ul {
  margin: 0;
  padding-left: 1.2rem;
}

.toc-toggle {
  margin-bottom: 0.6rem;
}

.toc-block.collapsed nav {
  display: none;
}

.back-to-top {
  position: fixed;
  bottom: 1rem;
  right: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease;
}

.back-to-top.show {
  opacity: 1;
  pointer-events: auto;
}

.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 2rem;
  padding: 1.2rem 0 2rem;
  color: var(--muted);
  font-size: 0.95rem;
}