/* The Clear Pipe — blog styles.
   Shares the palette and spine motif with the home page. */

:root{
  --glass:#F3F8F9;
  --ink:#0F3038;
  --ink-soft:#41616B;
  --flow:#1E9DBE;
  --flow-deep:#0F7A99;
  --copper:#B06A3B;
  --hairline:#C7DAE0;
  --white:#FFFFFF;
  --pipe-w:3px;
  --maxw:1080px;
  --readw:68ch;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--glass);
  color:var(--ink);
  font-family:'Instrument Sans',system-ui,sans-serif;
  font-size:17px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
::selection{background:var(--flow);color:var(--white)}
img{max-width:100%;height:auto}

.mono{font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:.08em;text-transform:uppercase}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
header{
  position:sticky;top:0;z-index:50;
  background:color-mix(in srgb, var(--glass) 88%, transparent);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--hairline);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:60px;gap:16px}
.brand-group{display:flex;align-items:center;min-width:0;flex:none}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);flex:none}
.brand svg{display:block}
.brand-name{font-family:'Archivo',sans-serif;font-weight:800;font-stretch:110%;font-size:15px;letter-spacing:.02em}
.brand-tag{color:var(--ink-soft);margin-left:14px;padding-left:14px;border-left:1px solid var(--hairline);white-space:nowrap}
.brand-tag a{color:var(--copper);text-decoration:none}
.brand-tag a:hover,.brand-tag a:focus-visible{color:var(--flow-deep)}
@media(max-width:760px){.brand-tag{display:none}}
.nav-links{display:flex;gap:26px;flex-wrap:wrap;justify-content:flex-end}
.nav-links a{text-decoration:none;color:var(--ink-soft)}
.nav-links a:hover,.nav-links a:focus-visible{color:var(--flow-deep)}
.nav-links a[aria-current="page"]{color:var(--ink)}
a:focus-visible,button:focus-visible{outline:2px solid var(--flow);outline-offset:3px;border-radius:2px}

/* ---------- spine ---------- */
.spine{position:relative}
.spine::before{
  content:"";
  position:absolute;left:24px;top:0;bottom:0;
  width:var(--pipe-w);
  background:var(--hairline);
  border-radius:2px;
}
@media(min-width:900px){.spine::before{left:calc((100% - var(--maxw))/2 + 24px)}}
.fitting{
  position:absolute;left:24px;transform:translateX(calc(-50% + var(--pipe-w)/2));
  width:15px;height:15px;border-radius:50%;
  background:var(--white);border:3px solid var(--copper);
  top:-8px;
}
@media(min-width:900px){.fitting{left:calc((100% - var(--maxw))/2 + 24px)}}
.pulse{
  position:absolute;left:24px;transform:translateX(calc(-50% + var(--pipe-w)/2));
  width:7px;height:7px;border-radius:50%;
  background:var(--flow);
  animation:fall 5s linear infinite;
  opacity:0;
}
@media(min-width:900px){.pulse{left:calc((100% - var(--maxw))/2 + 24px)}}
@keyframes fall{
  0%{top:0;opacity:0}
  8%{opacity:1}
  92%{opacity:1}
  100%{top:calc(100% - 7px);opacity:0}
}
@media(prefers-reduced-motion:reduce){
  .pulse{animation:none;opacity:0}
  html{scroll-behavior:auto}
}

section,article.post{position:relative;padding:72px 0}
.seg-label{color:var(--ink-soft);margin-bottom:28px;padding-left:44px}
.seg-label b{color:var(--copper);font-weight:500}
.seg-label a{color:var(--ink-soft);text-decoration:none}
.seg-label a:hover{color:var(--flow-deep)}
.section-body{padding-left:44px}

/* ---------- blog index ---------- */
.page-head{padding:88px 0 24px}
.page-head h1{
  font-family:'Archivo',sans-serif;
  font-weight:850;font-stretch:118%;
  font-size:clamp(40px,6.5vw,76px);
  line-height:1;letter-spacing:-.015em;
}
.lede{margin-top:20px;max-width:52ch;font-size:clamp(17px,2vw,20px);color:var(--ink-soft)}
.index-count{margin-top:26px;color:var(--ink-soft)}
.index-count a{color:var(--flow-deep);text-decoration:none}
.index-count a:hover{text-decoration:underline}

.archive{padding-top:24px}
.card{
  background:var(--white);border:1px solid var(--hairline);border-radius:6px;
  margin-bottom:16px;
  transition:border-color .15s ease, transform .15s ease;
}
.card:hover{border-color:var(--flow);transform:translateY(-2px)}
.card-link{display:block;padding:28px;text-decoration:none;color:inherit}
.card-meta{color:var(--ink-soft)}
.card-meta b{color:var(--copper);font-weight:500}
.card h2{
  font-family:'Archivo',sans-serif;font-weight:800;font-stretch:108%;
  font-size:clamp(22px,3vw,28px);line-height:1.15;margin:12px 0 10px;
}
.card-summary{color:var(--ink-soft);font-size:16px;max-width:64ch}
.card-tags{display:inline-block;margin-top:18px;color:var(--flow-deep)}

/* ---------- post ---------- */
.post{padding:72px 0 32px}
.post h1{
  font-family:'Archivo',sans-serif;font-weight:850;font-stretch:115%;
  font-size:clamp(34px,5.2vw,60px);line-height:1.02;letter-spacing:-.015em;
  max-width:20ch;
}
.post-meta{margin-top:22px;color:var(--ink-soft)}

.prose{margin-top:44px;max-width:var(--readw)}
.prose p{margin-bottom:22px;color:var(--ink)}
.prose h2{
  font-family:'Archivo',sans-serif;font-weight:800;font-stretch:110%;
  font-size:clamp(24px,3.2vw,32px);line-height:1.15;
  margin:48px 0 16px;
}
.prose h3{
  font-family:'Archivo',sans-serif;font-weight:800;font-stretch:106%;
  font-size:21px;margin:34px 0 12px;
}
.prose ul,.prose ol{margin:0 0 22px 22px}
.prose li{margin-bottom:10px}
.prose a{color:var(--flow-deep);text-decoration:underline;text-underline-offset:2px}
.prose a:hover{color:var(--ink)}
.prose strong{font-weight:600}
.prose blockquote{
  border-left:3px solid var(--copper);
  padding:4px 0 4px 22px;margin:0 0 26px;
  color:var(--ink-soft);font-size:19px;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose hr{border:0;border-top:1px solid var(--hairline);margin:40px 0}
.prose code{
  font-family:'IBM Plex Mono',monospace;font-size:14px;
  background:var(--white);border:1px solid var(--hairline);
  border-radius:3px;padding:1px 5px;
}
.prose pre{
  background:var(--ink);color:var(--glass);
  border-radius:6px;padding:20px 22px;overflow-x:auto;margin-bottom:26px;
}
.prose pre code{background:none;border:0;padding:0;color:inherit;font-size:13.5px}

.tags{list-style:none;display:flex;flex-wrap:wrap;gap:10px;margin:44px 0 0;max-width:var(--readw)}
.tags li{
  border:1px solid var(--hairline);border-radius:100px;
  padding:5px 12px;color:var(--ink-soft);background:var(--white);
}

/* ---------- post footer ---------- */
.post-foot{padding:24px 0 88px}
.pager{display:grid;gap:16px;border-top:1px solid var(--hairline);padding-top:28px}
@media(min-width:720px){.pager{grid-template-columns:1fr 1fr}}
.pager-link{
  display:flex;flex-direction:column;gap:8px;
  text-decoration:none;color:var(--ink);
  background:var(--white);border:1px solid var(--hairline);border-radius:6px;
  padding:20px 22px;font-weight:500;
  transition:border-color .15s ease;
}
.pager-link:hover{border-color:var(--flow)}
.pager-link .mono{color:var(--copper)}
.pager-prev{text-align:right}
.foot-cta{margin-top:32px;color:var(--ink-soft);max-width:60ch}
.foot-cta a{color:var(--flow-deep);text-decoration:none}
.foot-cta a:hover{text-decoration:underline}

/* ---------- footer ---------- */
footer{background:var(--ink);border-top:1px solid #274F59;padding:28px 0;color:#8FB3BD}
.foot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;align-items:center}
.foot a{color:#8FB3BD}
.foot a:hover{color:var(--flow)}