:root {
  color-scheme: light dark;
  --bg: #FFFFFF;
  --fg: #111111;
  --muted: #F4F4F4;
  --muted-fg: #666666;
  --border: #E5E5E5;
  --accent: #2563EB;
  --accent-muted: #DBEAFE;
  --code-comment: #6a737d;
  --code-keyword: #d73a49;
  --code-string: #032f62;
  --code-title: #6f42c1;
  --code-number: #005cc5;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0D1117;
    --fg: #E6EDF3;
    --muted: #161B22;
    --muted-fg: #9CA3AF;
    --border: #30363D;
    --accent: #58A6FF;
    --accent-muted: #1C2A45;
    --code-comment: #8b949e;
    --code-keyword: #ff7b72;
    --code-string: #a5d6ff;
    --code-title: #d2a8ff;
    --code-number: #79c0ff;
  }
}

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

html { font-size: 62.5%; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--fg);
  font-family: "FiraCode Nerd Font Mono", "Fira Code", "Space Grotesk", "Avenir Next", "Segoe UI", sans-serif;
  font-size: 1.6rem;
  line-height: 1.55;
}

a {
  color: var(--fg);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 2px;
}

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

code, pre {
  font-family: "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;
}

.page-shell { min-height: 100vh; }

.ambient-glow { display: none; }

.container {
  width: min(98rem, calc(100vw - 2.4rem));
  margin: 0 auto;
  padding: 1.2rem 0 3.2rem;
}

.content { padding: 1.4rem 0; }

.site-header { margin: 0; }

.top-bar {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 1.6rem;
  border: 2px solid var(--fg);
  padding: 1.6rem;
  background: var(--bg);
}

.site-title {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  text-decoration: none;
  color: var(--fg);
}

.wordmark {
  margin: 0;
  font-size: clamp(3.2rem, 7vw, 6rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  text-transform: lowercase;
}

.tagline {
  margin-top: 0.8rem;
  font-size: 1.2rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted-fg);
  font-family: "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;
}

.nav ul {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
  border: 2px solid var(--fg);
}

.nav li {
  display: flex;
  border-right: 2px solid var(--fg);
}

.nav li:last-child { border-right: 0; }

.page-link {
  display: flex;
  flex: 1;
  width: 100%;
  justify-content: center;
  align-items: center;
  padding: 1rem 1.3rem;
  text-decoration: none;
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg);
}

.page-link.active {
  background: var(--fg);
  color: var(--bg);
}

.page-link:hover {
  background: var(--accent-muted);
  color: var(--fg);
}

.home {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.posts {
  display: grid;
  gap: 1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.post-card {
  border: 2px solid var(--border);
  padding: 1.4rem;
  background: var(--bg);
}

.post-card:hover { border-color: var(--fg); }

.post-link {
  color: var(--fg);
  text-decoration: none;
}

.post-link h2 {
  margin: 0;
  font-size: clamp(2rem, 3.2vw, 2.8rem);
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.post-date {
  margin: 0.5rem 0 0;
  color: var(--muted-fg);
  font-size: 1.2rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-family: "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;
}

.excerpt {
  margin: 0.9rem 0 0;
  color: var(--fg);
  font-size: 1.5rem;
}

.post {
  border: 2px solid var(--fg);
  padding: 2rem;
  background: var(--bg);
}

.post-header {
  margin-bottom: 1.8rem;
  border-bottom: 2px solid var(--border);
  padding-bottom: 1.2rem;
}

.post-header h1,
.post-header h2 {
  margin: 0;
  font-size: clamp(3rem, 5vw, 5.2rem);
  line-height: 1;
  letter-spacing: -0.04em;
}

.meta {
  margin: 0.8rem 0 0;
  color: var(--muted-fg);
  font-size: 1.2rem;
  font-family: "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.post-content {
  color: var(--fg);
  font-size: 1.75rem;
}

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

.post-content p,
.post-content ul,
.post-content ol,
.post-content pre,
.post-content blockquote {
  margin: 0 0 1.6rem;
}

.post-content h2,
.post-content h3 {
  margin: 2.8rem 0 1rem;
  font-size: clamp(2.2rem, 3.2vw, 3.2rem);
  line-height: 1.1;
}

.post-content ul,
.post-content ol { padding-left: 2.2rem; }

.post-content li + li { margin-top: 0.8rem; }

.post-content blockquote {
  margin-left: 0;
  padding: 1rem 1.2rem;
  border: 2px solid var(--accent);
  background: var(--accent-muted);
}

.post-content pre {
  padding: 1rem 1.2rem;
  border: 2px solid var(--border);
  background: var(--muted);
  overflow-x: auto;
}

.post-content pre code { background: transparent; }

.hljs { color: var(--fg); background: transparent; }
.hljs-comment, .hljs-quote { color: var(--code-comment); }
.hljs-keyword, .hljs-selector-tag, .hljs-subst { color: var(--code-keyword); }
.hljs-string, .hljs-doctag { color: var(--code-string); }
.hljs-title, .hljs-section, .hljs-selector-id { color: var(--code-title); }
.hljs-number, .hljs-literal, .hljs-variable, .hljs-template-variable { color: var(--code-number); }

.post-content img {
  max-width: 100%;
  display: block;
  border: 2px solid var(--border);
}

.site-footer {
  margin-top: 1.2rem;
  border: 2px solid var(--fg);
  background: var(--bg);
  padding: 1.2rem;
}

.footer-description {
  margin: 0 0 1rem;
  font-size: 1.3rem;
  color: var(--muted-fg);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: 2px solid var(--border);
  padding: 0.7rem 0.9rem;
  text-decoration: none;
  color: var(--fg);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.footer-links a:hover {
  border-color: var(--fg);
  background: var(--accent-muted);
}

[data-animate="fade-in"],
[data-animate="slide-in"] {
  animation: none;
}

@media (max-width: 860px) {
  .top-bar { flex-direction: column; }
  .nav ul { width: 100%; }
}

@media (max-width: 620px) {
  .container {
    width: calc(100vw - 1.2rem);
    padding-top: 0.6rem;
  }
  .top-bar { padding: 1.1rem; }
  .content { padding: 0.9rem 0; }
  .post { padding: 1.3rem; }
  .post-content { font-size: 1.65rem; }
  .excerpt { display: none; }
}