:root {
  color-scheme: light;
  --bg: #F4F3EE;
  --panel: #E7DED1;
  --text: #211B16;
  --muted: #5E554B;
  --soft: #8C7B6B;
  --line: #D8CCBD;
  --accent: #C96442;
  --accent-strong: #9E452B;
  --header-overlay: rgba(33, 27, 22, .18);
  --toggle-bg: rgba(33, 27, 22, .28);
  --toggle-bg-hover: rgba(33, 27, 22, .46);
}

:root.dark {
  color-scheme: dark;
  --bg: #0c1222;
  --panel: #1C2333;
  --text: #F7F0E7;
  --muted: #D7CABB;
  --soft: #A9998A;
  --line: #384154;
  --accent: #F08A68;
  --accent-strong: #FFB099;
  --header-overlay: rgba(12, 18, 34, .3);
  --toggle-bg: rgba(12, 18, 34, .48);
  --toggle-bg-hover: rgba(12, 18, 34, .72);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

.theme-toggle {
  display: inline-grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  border: 0;
  border-radius: .35rem;
  background: var(--toggle-bg);
  color: #f1f5f9;
  cursor: pointer;
  transition: background .2s ease, color .2s ease, transform .2s ease;
}

.theme-toggle:hover {
  background: var(--toggle-bg-hover);
  color: var(--accent-strong);
  transform: translateY(-1px);
}

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

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

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

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

.shell {
  width: min(100%, 64rem);
  margin: 0 auto;
  padding: 0 1rem;
}

.site-header {
  height: 13rem;
  background-image: linear-gradient(var(--header-overlay), var(--header-overlay)), url("/static/images/archer-banner.jpeg");
  background-position: center;
  background-size: cover;
}

.page-puzzles .site-header {
  background-image: linear-gradient(var(--header-overlay), var(--header-overlay)), url("/static/images/new-go.png");
  background-size: cover;
  background-repeat: no-repeat;
}

.page-blog .site-header {
  background-image: linear-gradient(var(--header-overlay), var(--header-overlay)), url("/static/images/julia-set.png");
}

.page-research .site-header {
  background-image: linear-gradient(var(--header-overlay), var(--header-overlay)), url("/static/images/super-booster.png");
}

.page-books .site-header {
  background-image: linear-gradient(var(--header-overlay), var(--header-overlay)), url("/static/images/virtruvian-2.png");
}

.page-projects .site-header {
  background-image: linear-gradient(var(--header-overlay), var(--header-overlay)), url("/static/images/turing-machine.png");
}

.header-inner {
  display: flex;
  height: 100%;
  flex-direction: column;
  justify-content: space-between;
  padding-top: 1rem;
  padding-bottom: .25rem;
}

.brand {
  color: #fff8ef;
  display: block;
  width: fit-content;
  max-width: 100%;
  font-family: "Cascadia Mono", "Cascadia Code", "JetBrains Mono", "Fira Code", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.brand:hover,
.nav a:hover,
.footer a:hover,
.all-posts a:hover {
  color: var(--accent-strong);
}

.brand-ascii {
  display: block;
  margin: 0;
  color: #f8f8f2;
  font: 700 clamp(.25rem, .78vw, .74rem)/1 "Cascadia Mono", "Cascadia Code", "JetBrains Mono", "Fira Code", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  letter-spacing: 0;
  white-space: pre;
}

.brand-text {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  color: #fff8ef;
  font-size: 1.4rem;
  font-weight: 650;
}

.nav a.active {
  color: var(--accent);
}

.page {
  display: flex;
  min-height: calc(100vh - 13rem);
  flex-direction: column;
  justify-content: space-between;
}

main {
  padding-top: 1.5rem;
}

.tagline {
  margin: 0 0 1rem;
  padding: 1rem;
  color: var(--muted);
  font-size: 1.125rem;
}

.intro-copy {
  max-width: 46rem;
  padding: 0 1rem 1rem;
  color: var(--muted);
  font-size: 1.1rem;
}

.intro-copy p {
  margin: 0;
}

.section-links {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem 1rem;
  padding: 1rem;
}

.section-links a {
  color: var(--accent);
  font-size: 1.15rem;
  font-weight: 650;
  transition: color .2s ease, transform .2s ease;
}

.section-links a:hover {
  color: var(--accent-strong);
  transform: translateY(-1px);
}

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

.post-link {
  display: grid;
  grid-template-columns: minmax(9rem, 1fr) 3fr;
  gap: 1.5rem;
  padding: 1.5rem 1rem;
  border-radius: .75rem;
  transition: background .2s ease, transform .2s ease;
}

.post-link:hover {
  background: var(--panel);
  transform: scale(1.01);
}

time {
  color: var(--muted);
  font-weight: 550;
}

.post-link strong {
  display: block;
  font-size: 1.5rem;
  line-height: 1.35;
}

.tags {
  display: block;
  margin-top: .25rem;
  color: var(--accent);
  font-weight: 650;
  word-spacing: .5rem;
}

.summary {
  display: block;
  margin-top: .35rem;
  color: var(--muted);
}

.all-posts {
  display: flex;
  justify-content: flex-end;
  margin: 1rem 0 0;
  font-size: 1.25rem;
  font-weight: 650;
  color: var(--accent);
}

.footer {
  display: flex;
  justify-content: center;
  gap: .5rem;
  margin-top: 4rem;
  padding-bottom: .5rem;
  color: var(--muted);
}

.page-title {
  margin: 0;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--line);
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.1;
}

.content-band {
  border-bottom: 1px solid var(--line);
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 0;
  padding: 2rem 0;
}

.tag-pill {
  display: inline-flex;
  gap: .25rem;
  align-items: baseline;
  color: var(--accent);
  font-size: 1.35rem;
  font-weight: 750;
}

.tag-pill span {
  color: var(--muted);
  font-size: 1rem;
}

.split {
  display: grid;
  grid-template-columns: 14rem 1fr;
  gap: 2rem;
  padding-top: 2rem;
}

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

.side-tags a {
  display: inline-block;
  margin-bottom: .65rem;
  color: var(--accent);
  font-weight: 700;
}

.section-heading {
  margin: 0 0 1rem;
  font-size: 1.25rem;
}

.snippet-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2rem;
  padding: 2rem 0;
}

.snippet-card {
  display: block;
  min-height: 8rem;
  border: 1px solid var(--line);
  border-radius: .5rem;
  padding: .75rem;
  transition: border-color .2s ease, background .2s ease, transform .2s ease;
}

.snippet-card:hover {
  border-color: var(--accent);
  background: var(--panel);
  transform: scale(1.02);
}

.snippet-card h2 {
  margin: 0 0 .5rem;
  font-size: 1.125rem;
}

.snippet-card p,
.about-copy p,
.about-copy blockquote {
  color: var(--muted);
}

.about-layout {
  display: grid;
  grid-template-columns: 12rem 1fr;
  gap: 2rem;
  align-items: start;
  padding: 2rem 0;
}

.avatar {
  width: 12rem;
  aspect-ratio: 1;
  border-radius: .35rem;
  object-fit: cover;
}

.profile-panel {
  width: 12rem;
}

.social-links {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: .7rem;
  margin-top: 1rem;
}

.profile-name {
  margin: 1rem 0 0;
  font-size: 1.25rem;
  line-height: 1.25;
  text-align: left;
}

.profile-meta {
  margin-top: .6rem;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.35;
}

.profile-meta p {
  margin: .15rem 0;
}

.icon-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  color: var(--muted);
  font-size: 1.08rem;
  font-weight: 600;
  line-height: 1;
  transition: color .2s ease, transform .2s ease;
}

.icon-link:hover,
.icon-link:focus-visible {
  color: var(--accent-strong);
  transform: translateY(-1px);
}

.icon-link svg {
  width: 1.12rem;
  height: 1.12rem;
}

.about-copy h2 {
  margin: 0 0 1rem;
  font-size: 1.5rem;
}

.about-copy blockquote {
  margin: 1.5rem 0 0;
  border-left: 4px solid var(--line);
  padding-left: 1rem;
}

@media (max-width: 720px) {
  .site-header {
    height: 10rem;
  }

  .nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: .8rem 1rem;
    font-size: 1.05rem;
  }

  .page {
    min-height: calc(100vh - 10rem);
  }

  .post-link,
  .split,
  .about-layout,
  .snippet-grid {
    grid-template-columns: 1fr;
  }

  .profile-panel {
    width: min(12rem, 100%);
  }

  .post-link {
    gap: .5rem;
  }
}