/* ============================================================
   twelfthlane.net — terminal / dev theme
   Minimal, monospace-accented, auto light/dark.
   ============================================================ */

:root {
  --bg:        #fbfbf8;
  --surface:   #ffffff;
  --text:      #1b1d1a;
  --muted:     #6b7066;
  --border:    #e6e6df;
  --accent:    #18794e;
  --accent-2:  #126e44;
  --tag-bg:    #edf3ee;
  --tag-text:  #1f6b46;
  --code-bg:   #f3f4ef;
  --selection: rgba(24, 121, 78, 0.18);

  --mono: "SFMono-Regular", "JetBrains Mono", "Fira Code", "Cascadia Code", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --maxw: 720px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:        #0d0f0d;
    --surface:   #131613;
    --text:      #e7e9e3;
    --muted:     #8a917f;
    --border:    #232722;
    --accent:    #4ade80;
    --accent-2:  #6ee7a0;
    --tag-bg:    #16221a;
    --tag-text:  #6ee7a0;
    --code-bg:   #161a16;
    --selection: rgba(74, 222, 128, 0.22);
  }
  .post-image, .img-rounded { filter: brightness(0.92); }
}

* { box-sizing: border-box; }

::selection { background: var(--selection); }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.container-narrow {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 22px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main { flex: 1 0 auto; }

/* ---------- Links ---------- */
a {
  color: var(--accent);
  text-decoration: none;
  transition: color .15s ease, background-color .15s ease, border-color .15s ease;
}
a:hover { color: var(--accent-2); }

main p a,
.prose a {
  border-bottom: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
}
main p a:hover,
.prose a:hover { border-bottom-color: var(--accent-2); }

/* ---------- Masthead ---------- */
.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 30px 0 22px;
  margin-bottom: 36px;
  border-bottom: 1px solid var(--border);
}

.brand {
  font-family: var(--mono);
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.5px;
  color: var(--text);
  display: inline-flex;
  align-items: baseline;
}
.brand:hover { color: var(--accent); }

.caret {
  display: inline-block;
  width: 9px;
  height: 1.05em;
  margin-left: 4px;
  background: var(--accent);
  transform: translateY(2px);
  animation: blink 1.15s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .caret { animation: none; } }

.nav {
  font-family: var(--mono);
  font-size: 14.5px;
  display: flex;
  gap: 18px;
}
.nav a { color: var(--muted); }
.nav a::before { content: "/"; color: var(--border); margin-right: 2px; }
.nav a:hover { color: var(--text); }
.nav a.active { color: var(--accent); }
.nav a .label {
  padding-bottom: 3px;
  border-bottom: 2px solid transparent;
}
.nav a.active .label { border-bottom-color: var(--accent); }

/* ---------- Headings ---------- */
h1, h2, h3, h4 {
  font-family: var(--mono);
  line-height: 1.25;
  letter-spacing: -0.4px;
  color: var(--text);
}
h1 { font-size: 30px; margin: 0 0 .4em; }
h2 { font-size: 23px; margin: 1.6em 0 .5em; }
h3 { font-size: 19px; margin: 1.5em 0 .5em; }
h4 { font-size: 16px; margin: 1.4em 0 .5em; color: var(--accent); }

/* ---------- Home: hero + post list ---------- */
.hero { margin-bottom: 44px; }
.hero .eyebrow {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 14px;
}
.hero .eyebrow::before { content: "~/ "; color: var(--accent); }
.hero h1 { font-size: 28px; margin-bottom: .5em; }
.hero h1 a { color: var(--text); }
.hero h1 a:hover { color: var(--accent); }
.hero p { color: var(--muted); margin: 0; }

.section-label {
  font-family: var(--mono);
  font-size: 13px;
  text-transform: lowercase;
  letter-spacing: .5px;
  color: var(--muted);
  margin: 0 0 18px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.section-label::before { content: "$ "; color: var(--accent); }

.post-list { list-style: none; margin: 0 0 44px; padding: 0; }
.post-list li {
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}
.post-list li:first-child { padding-top: 0; }
.post-item {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
}
.post-item .title {
  position: relative;
  flex: 1 1 auto;
  min-width: 0;
  padding-left: 1.5em;
  font-family: var(--mono);
  font-size: 17px;
  color: var(--text);
  letter-spacing: -0.3px;
}
.post-item .title::before {
  content: "\203A";
  position: absolute;
  left: 0;
  color: var(--accent);
}
.post-item .title:hover { color: var(--accent); }
.post-item .date {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--muted);
  margin-left: auto;
  flex: none;
}

/* ---------- Tags ---------- */
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
a.tag, span.tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 12.5px;
  background: var(--tag-bg);
  color: var(--tag-text);
  padding: 4px 10px;
  border-radius: 4px;
}
a.tag::before, span.tag::before { content: "#"; opacity: .55; }
a.tag:hover { background: color-mix(in srgb, var(--tag-bg) 70%, var(--accent) 30%); }

/* ---------- Tags page ---------- */
.tag-section { margin: 40px 0; scroll-margin-top: 24px; }
.tag-heading {
  font-family: var(--mono);
  font-size: 16px;
  color: var(--text);
  margin: 0 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.tag-heading::before { content: "#"; color: var(--accent); }
.tag-section .post-list { margin-bottom: 0; }
:target.tag-section .tag-heading { color: var(--accent); }

/* ---------- Blog index ---------- */
.sub-segment {
  padding: 22px 0;
  border-bottom: 1px solid var(--border);
}
.sub-segment:first-child { padding-top: 0; }
.sub-segment h2 { margin: 0 0 8px; font-size: 20px; }
.sub-segment h2 a { color: var(--text); }
.sub-segment h2 a:hover { color: var(--accent); }
.post-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--muted);
}
.post-meta strong { font-weight: 500; }

/* ---------- Article (post) ---------- */
article header { margin-bottom: 34px; }
article header h1 { font-size: 30px; margin-bottom: .35em; }
article header h1 a { color: var(--text); }
article header h1 a:hover { color: var(--accent); }
article header .post-meta { margin: 0; }

/* On post pages, push the date block to the bottom so it sits just above
   the page footer instead of floating after short content. */
.post-page main { display: flex; flex-direction: column; }
.post-page article { flex: 1 0 auto; display: flex; flex-direction: column; }
.post-page article > footer { margin-top: auto; }

article footer .well {
  display: block;
  margin-top: 48px;
  padding: 14px 16px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted);
  background: var(--code-bg);
  border-left: 3px solid var(--accent);
  border-radius: 0 6px 6px 0;
}

/* ---------- Prose elements ---------- */
main p, main li { color: var(--text); }
main ul, main ol { padding-left: 1.3em; }
main li { margin: .3em 0; }

blockquote {
  margin: 24px 0;
  padding: 4px 18px;
  border-left: 3px solid var(--accent);
  color: var(--muted);
  font-style: italic;
}

code {
  font-family: var(--mono);
  font-size: .88em;
  background: var(--code-bg);
  padding: 2px 6px;
  border-radius: 4px;
}
pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 18px;
  overflow-x: auto;
  line-height: 1.55;
}
pre code { background: none; padding: 0; font-size: 13.5px; }

img { max-width: 100%; height: auto; }
.post-image, .img-rounded {
  display: block;
  margin: 30px auto;
  max-width: 100%;
  border-radius: 10px;
  border: 1px solid var(--border);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 15px;
}
th, td { padding: 9px 12px; border: 1px solid var(--border); text-align: left; }
th { background: var(--code-bg); font-family: var(--mono); font-weight: 600; }

hr { border: none; border-top: 1px solid var(--border); margin: 36px 0; }

/* ---------- About ---------- */
.path-links {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--muted);
  margin: 0;
  line-height: 1.9;
}
.path-links .sep { color: var(--border); margin: 0 4px; }
.path-links a {
  color: var(--text);
  border-bottom: 1px solid transparent;
}
.path-links a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ---------- Footer ---------- */
.footer {
  flex-shrink: 0;
  padding: 20px 0 30px;
  margin-top: 48px;
  border-top: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--muted);
}
.footer .prompt { color: var(--accent); margin-right: 6px; }
.footer a { color: var(--muted); border-bottom: 1px solid var(--border); }
.footer a:hover { color: var(--accent); }

/* ---------- Reading time (tiny annotation inside the title) ---------- */
h1 .read-time {
  display: inline-block;
  margin-left: 8px;
  font-size: 9.5px;
  font-weight: 400;
  letter-spacing: .3px;
  white-space: nowrap;
  vertical-align: super;
  color: var(--muted);
}
h1 .read-time::before { content: "~ "; color: var(--accent); }

/* ---------- Post navigation (prev / next) ---------- */
.post-nav {
  display: flex;
  gap: 14px;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.post-nav-link {
  flex: 1 1 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
}
.post-nav-link.next { text-align: right; align-items: flex-end; }
.post-nav-link:hover { border-color: var(--accent); }
.post-nav-label {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
}
.post-nav-link.prev .post-nav-label::before { content: "\2039 "; color: var(--accent); }
.post-nav-link.next .post-nav-label::after  { content: " \203A"; color: var(--accent); }
.post-nav-title {
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: -0.3px;
  line-height: 1.35;
}
.post-nav-link:hover .post-nav-title { color: var(--accent); }

/* ---------- 404 ---------- */
.notfound .eyebrow {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 14px;
}
.notfound .eyebrow::before { content: "~/ "; color: var(--accent); }
.notfound h1 { font-size: 26px; margin-bottom: .8em; }
.notfound-shell {
  color: var(--muted);
  line-height: 1.6;
  font-size: 13.5px;
}
.notfound-shell .prompt { color: var(--accent); margin-right: 6px; }
.notfound-links {
  font-family: var(--mono);
  font-size: 14px;
  margin-top: 28px;
}
.notfound-links .sep { color: var(--border); margin: 0 8px; }

/* ---------- Responsive ---------- */
@media (max-width: 540px) {
  body { font-size: 16px; }
  .masthead { padding-top: 22px; }
  .brand { font-size: 19px; }
  .post-item .date { margin-left: 0; width: 100%; }
  .post-nav { flex-direction: column; }
  .post-nav-link.next { text-align: left; align-items: flex-start; }
}