/* ── Reset & Variables ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #fff;
  --fg: #444;
  --heading: #222;
  --muted: #888;
  --border: #e2e0db;
  --accent: #3273dc;
  --accent-h: #1a5cbf;
  --visited: #8b6fcb;
  --tag-bg: #f2f2f2;
  --tag-fg: #444;
  --code-bg: #f2f2f2;
  --max: 720px;
  --font-body: 'Open Sans', sans-serif;
  --font-mono: monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #01242e;
    --fg: #ddd;
    --heading: #eee;
    --muted: #aaa;
    --border: #1e3a45;
    --accent: #8cc2dd;
    --accent-h: #aad4ea;
    --visited: #8b6fcb;
    --tag-bg: #000;
    --tag-fg: #ddd;
    --code-bg: #000;
  }
}

/* ── Base ───────────────────────────────────────────────────────────────── */
html { font-size: 1em; -webkit-font-smoothing: antialiased; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 20px;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

h1, h2, h3, h4, h5, h6 { color: var(--heading); }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
a:visited { color: var(--visited); }

/* ── Nav ─────────────────────────────────────────────────────────────────── */
nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 0 0.5rem 0;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--border);
}

.home-link {
  font-weight: bold;
  font-size: 1.5em;
  color: var(--heading);
  text-decoration: none;
  white-space: nowrap;
}
.home-link:hover { text-decoration: none; color: var(--heading); }

.nav-links { display: flex; gap: 0.5rem; font-size: 1rem; flex-wrap: wrap; align-items: baseline; }
.nav-links a { color: var(--accent); margin-right: 8px; }
.nav-links a:hover { text-decoration: underline; }
.nav-links a:visited { color: var(--visited); }

/* ── Main layout ─────────────────────────────────────────────────────────── */
main {
  flex: 1;
  max-width: var(--max);
  width: 100%;
  margin: 0 auto;
  padding: 1.5rem 0 3rem;
  line-height: 1.6;
}

/* ── Blog header ─────────────────────────────────────────────────────────── */
.blog-header { margin-bottom: 2.5rem; padding-bottom: 1.5rem; border-bottom: 1px solid var(--border); }
.blog-header h1 { font-size: 1.7rem; font-weight: 600; letter-spacing: -0.02em; }
.tagline { margin-top: 0.4rem; color: var(--muted); font-style: italic; font-size: 0.95rem; }

/* ── Post list ───────────────────────────────────────────────────────────── */
.post-list { display: flex; flex-direction: column; gap: 1.75rem; }

.post-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--fg);
  display: block;
  margin-bottom: 0.15rem;
}
.post-title:hover { color: var(--accent); text-decoration: none; }

time {
  font-size: 0.78rem;
  color: var(--muted);
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.post-desc {
  margin-top: 0.3rem;
  font-size: 0.9rem;
  color: var(--muted);
  font-style: italic;
}

.more-link {
  display: inline-block;
  margin-top: 2rem;
  font-size: 0.88rem;
  font-family: var(--font-mono);
}

.page-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}
.page-title em { font-style: italic; font-weight: 400; }

/* ── Full post ───────────────────────────────────────────────────────────── */
.post-header {
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.post-header h1 {
  font-size: 1.8rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 0.5rem;
}
.post-header time { display: block; margin-bottom: 0.5rem; }

/* ── Post body ───────────────────────────────────────────────────────────── */
.post-body { font-size: 1rem; }
.post-body h1, .post-body h2, .post-body h3 {
  margin: 1.75rem 0 0.6rem;
  font-weight: 600;
  color: var(--heading);
}
.post-body h1 { font-size: 1.5rem; }
.post-body h2 { font-size: 1.25rem; }
.post-body h3 { font-size: 1.05rem; }
.post-body p { margin: 0.9rem 0; }
.post-body ul, .post-body ol { margin: 0.75rem 0 0.75rem 1.5rem; }
.post-body li { margin: 0.25rem 0; }
.post-body blockquote {
  border-left: 1px solid #999;
  padding-left: 20px;
  color: var(--fg);
  font-style: italic;
  margin: 1rem 0;
}
.post-body code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--code-bg);
  color: var(--fg);
  padding: 2px;
  border-radius: 3px;
}
.post-body pre {
  background: var(--code-bg);
  color: var(--fg);
  padding: 1px 15px;
  border-radius: 3px;
  overflow-x: auto;
  margin: 1em 0;
  font-size: 0.9rem;
  line-height: 1.6;
}
.post-body pre code { background: none; padding: 0; }
.post-body hr { border: 0; border-top: 1px dashed; margin: 2rem 0; }
.post-body a { color: var(--accent); }
.post-body a:visited { color: var(--visited); }
.post-body img { max-width: 100%; margin: 1rem 0; }
.post-body table { border-collapse: collapse; width: 100%; margin: 1rem 0; font-size: 0.9rem; }
.post-body th, .post-body td { border: 1px solid var(--border); padding: 0.5rem 0.75rem; }
.post-body th { background: var(--tag-bg); font-weight: 600; }
.post-body strong, .post-body b { color: var(--heading); }

.back-link {
  display: inline-block;
  margin-top: 2.5rem;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: var(--muted);
}
.back-link:hover { color: var(--accent); text-decoration: none; }

/* ── Tags ────────────────────────────────────────────────────────────────── */
.tags { display: flex; gap: 0.4rem; flex-wrap: wrap; margin-top: 0.5rem; }

.tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  background: var(--tag-bg);
  color: var(--tag-fg);
  padding: 0.2em 0.55em;
  border-radius: 3px;
  text-decoration: none;
  letter-spacing: 0.02em;
}
.tag:hover { background: var(--border); color: var(--fg); text-decoration: none; }

.tag-cloud { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.tag-big {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  background: var(--tag-bg);
  color: var(--tag-fg);
  padding: 0.35em 0.8em;
  border-radius: 4px;
  text-decoration: none;
}
.tag-big span { color: var(--muted); font-size: 0.8em; }
.tag-big:hover { background: var(--border); text-decoration: none; }

/* ── Footer ──────────────────────────────────────────────────────────────── */
footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 25px 0;
  font-size: 0.85rem;
  color: var(--muted);
  font-family: var(--font-mono);
  text-align: center;
}
footer a { color: var(--muted); }
footer a:hover { text-decoration: underline; }

.empty { color: var(--muted); font-style: italic; }

/* ── Pagination ──────────────────────────────────────────────────────────── */
.pager {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--border);
  font-size: 0.9rem;
}
.pager-link { color: var(--accent); text-decoration: none; }
.pager-link:hover { text-decoration: underline; }
.pager-info { color: var(--muted); font-family: var(--font-mono); font-size: 0.8rem; }
.pager-gap { display: inline-block; width: 80px; }

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  body { padding: 12px; }
  .post-header h1 { font-size: 1.3rem; }
  .home-link { font-size: 1.15em; }
  nav { gap: 0.5rem; }
  .nav-links { font-size: 0.82rem; gap: 0.1rem; }
  .nav-links a { margin-right: 4px; }
}


@media (prefers-color-scheme: dark) {
  :root {
    --bg: #01242e;
    --fg: #ddd;
    --heading: #eee;
    --muted: #aaa;
    --border: #1e3a45;
    --accent: #8cc2dd;
    --accent-h: #aad4ea;
    --visited: #8b6fcb;
    --tag-bg: #000;
    --tag-fg: #ddd;
    --code-bg: #000;
  }
}

/* ── Base ───────────────────────────────────────────────────────────────── */
html { font-size: 1em; -webkit-font-smoothing: antialiased; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 20px;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

h1, h2, h3, h4, h5, h6 { color: var(--heading); }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
a:visited { color: var(--visited); }

/* ── Nav ─────────────────────────────────────────────────────────────────── */
nav {
  max-width: var(--max);
  margin: 0 auto 0;
  padding: 0 0 0.5rem 0;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}

.home-link {
  font-weight: bold;
  font-size: 1.5em;
  color: var(--heading);
  text-decoration: none;
}
.home-link:hover { text-decoration: none; color: var(--heading); }

.nav-links { display: flex; gap: 0.5rem; font-size: 1rem; flex-wrap: wrap; }
.nav-links a { color: var(--accent); margin-right: 8px; }
.nav-links a:hover { text-decoration: underline; }
.nav-links a:visited { color: var(--visited); }

/* ── Main layout ─────────────────────────────────────────────────────────── */
main {
  flex: 1;
  max-width: var(--max);
  width: 100%;
  margin: 0 auto;
  padding: 1.5rem 0 3rem;
  line-height: 1.6;
}

/* ── Blog header ─────────────────────────────────────────────────────────── */
.blog-header { margin-bottom: 2.5rem; padding-bottom: 1.5rem; border-bottom: 1px solid var(--border); }
.blog-header h1 { font-size: 1.7rem; font-weight: 600; letter-spacing: -0.02em; }
.tagline { margin-top: 0.4rem; color: var(--muted); font-style: italic; font-size: 0.95rem; }

/* ── Post list ───────────────────────────────────────────────────────────── */
.post-list { display: flex; flex-direction: column; gap: 1.75rem; }

.post-card { }

.post-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--fg);
  display: block;
  margin-bottom: 0.15rem;
}
.post-title:hover { color: var(--accent); text-decoration: none; }

time {
  font-size: 0.78rem;
  color: var(--muted);
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.post-desc {
  margin-top: 0.3rem;
  font-size: 0.9rem;
  color: var(--muted);
  font-style: italic;
}

.more-link {
  display: inline-block;
  margin-top: 2rem;
  font-size: 0.88rem;
  font-family: var(--font-mono);
}

.page-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}
.page-title em { font-style: italic; font-weight: 400; }

/* ── Full post ───────────────────────────────────────────────────────────── */
.post-full { }

.post-header {
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.post-header h1 {
  font-size: 1.8rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 0.5rem;
}
.post-header time { display: block; margin-bottom: 0.5rem; }

/* ── Post body (rendered markdown) ──────────────────────────────────────── */
.post-body { font-size: 1rem; }
.post-body h1, .post-body h2, .post-body h3 {
  margin: 1.75rem 0 0.6rem;
  font-weight: 600;
  color: var(--heading);
}
.post-body h1 { font-size: 1.5rem; }
.post-body h2 { font-size: 1.25rem; }
.post-body h3 { font-size: 1.05rem; }
.post-body p { margin: 0.9rem 0; }
.post-body ul, .post-body ol { margin: 0.75rem 0 0.75rem 1.5rem; }
.post-body li { margin: 0.25rem 0; }
.post-body blockquote {
  border-left: 1px solid #999;
  padding-left: 20px;
  color: var(--fg);
  font-style: italic;
  margin: 1rem 0;
}
.post-body code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--code-bg);
  color: var(--fg);
  padding: 2px;
  border-radius: 3px;
}
.post-body pre {
  background: var(--code-bg);
  color: var(--fg);
  padding: 1px 15px;
  border-radius: 3px;
  overflow-x: auto;
  margin: 1em 0;
  font-size: 0.9rem;
  line-height: 1.6;
}
.post-body pre code { background: none; padding: 0; }
.post-body hr { border: 0; border-top: 1px dashed; margin: 2rem 0; }
.post-body a { color: var(--accent); }
.post-body a:visited { color: var(--visited); }
.post-body img { max-width: 100%; margin: 1rem 0; }
.post-body table { border-collapse: collapse; width: 100%; margin: 1rem 0; font-size: 0.9rem; }
.post-body th, .post-body td { border: 1px solid var(--border); padding: 0.5rem 0.75rem; }
.post-body th { background: var(--tag-bg); font-weight: 600; }
.post-body strong, .post-body b { color: var(--heading); }

.back-link {
  display: inline-block;
  margin-top: 2.5rem;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: var(--muted);
}
.back-link:hover { color: var(--accent); text-decoration: none; }

/* ── Tags ────────────────────────────────────────────────────────────────── */
.tags { display: flex; gap: 0.4rem; flex-wrap: wrap; margin-top: 0.5rem; }

.tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  background: var(--tag-bg);
  color: var(--tag-fg);
  padding: 0.2em 0.55em;
  border-radius: 3px;
  text-decoration: none;
  letter-spacing: 0.02em;
}
.tag:hover { background: var(--border); color: var(--fg); text-decoration: none; }

.tag-cloud { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.tag-big {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  background: var(--tag-bg);
  color: var(--tag-fg);
  padding: 0.35em 0.8em;
  border-radius: 4px;
  text-decoration: none;
}
.tag-big span { color: var(--muted); font-size: 0.8em; }
.tag-big:hover { background: var(--border); text-decoration: none; }

/* ── Footer ──────────────────────────────────────────────────────────────── */
footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 25px 0;
  font-size: 0.85rem;
  color: var(--muted);
  font-family: var(--font-mono);
  text-align: center;
}
footer a { color: var(--muted); }
footer a:hover { text-decoration: underline; }

.empty { color: var(--muted); font-style: italic; }

/* ── Hamburger ───────────────────────────────────────────────────────────── */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  padding: 0.25rem 0.6rem;
  color: var(--heading);
  font-size: 1.2rem;
  line-height: 1;
  width: auto;
  flex-shrink: 0;
}

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  body { padding: 12px; }
  .post-header h1 { font-size: 1.3rem; }
  .home-link { font-size: 1.2em; }

  nav { align-items: center; flex-wrap: nowrap; padding-bottom: 0; }

  .nav-toggle { display: block; }

  .nav-links {
    display: none;
    flex-direction: column;
    width: 100%;
    gap: 0;
    padding: 0.5rem 0 0.75rem;
    border-top: 1px solid var(--border);
    margin-top: 0.5rem;
  }
  .nav-links.open { display: flex; }
  .nav-links a {
    padding: 0.45rem 0;
    margin-right: 0;
    font-size: 1rem;
    border-bottom: 1px solid var(--border);
  }
  .nav-links a:last-child { border-bottom: none; }
}

/* ── Pagination ──────────────────────────────────────────────────────────── */
.pager {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--border);
  font-size: 0.9rem;
}
.pager-link { color: var(--accent); text-decoration: none; }
.pager-link:hover { text-decoration: underline; }
.pager-info { color: var(--muted); font-family: var(--font-mono); font-size: 0.8rem; }
.pager-gap { display: inline-block; width: 80px; }