/* Reading page for the build write-up. Same palette as the viewer, but laid
   out as an article: one column, generous measure, images that breathe. */

@font-face{
  font-family:"Inter Variable";
  font-style:normal;
  font-weight:100 900;
  font-display:swap;
  src:url("../fonts/inter-latin-wght-normal.woff2") format("woff2");
}

:root{
  --bg:#07090b;
  --ink:#e6eaee;
  --ink-2:#9aa5ad;
  --ink-3:#5d666e;
  --line:rgba(255,255,255,.10);
  --line-2:rgba(255,255,255,.055);
  --accent:#4cc9e0;
  --warn:#e8b04b;
  --mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,monospace;
  --sans:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text",
         "Inter Variable",Inter,"Segoe UI",system-ui,sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{
  margin:0;color:var(--ink);font-family:var(--sans);
  -webkit-font-smoothing:antialiased;
  background:
    radial-gradient(120% 60% at 50% 0%,rgba(78,132,160,.14),transparent 60%),
    radial-gradient(80% 50% at 85% 100%,rgba(76,201,224,.07),transparent 70%),
    var(--bg);
  background-attachment:fixed;
}

/* ---------- top bar ---------- */
header.bar{
  position:sticky;top:0;z-index:20;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:13px 22px;
  background:rgba(7,9,11,.78);backdrop-filter:blur(18px) saturate(1.3);
  border-bottom:1px solid var(--line-2);
}
header.bar a.back{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--ink-2);text-decoration:none;
  font:500 12.5px/1 var(--sans);padding:8px 13px;
  border:1px solid var(--line);border-radius:9px;transition:.15s;
}
header.bar a.back:hover{color:var(--ink);border-color:rgba(255,255,255,.24);background:rgba(255,255,255,.05)}
header.bar .who{font:400 10.5px/1 var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--ink-3)}

/* ---------- hero ---------- */
.hero{max-width:760px;margin:0 auto;padding:64px 22px 8px;text-align:center}
.hero h1{
  margin:0 0 18px;font:250 44px/1.08 var(--sans);letter-spacing:-.015em;
  background:linear-gradient(96deg,#fff 10%,#b9d2de 55%,#4cc9e0 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero .lede{margin:0 auto;max-width:600px;font:300 18.5px/1.62 var(--sans);color:var(--ink-2)}
.hero .lede strong{color:var(--ink);font-weight:500}

/* ---------- article ---------- */
article{max-width:760px;margin:0 auto;padding:0 22px 110px}
article h2{
  margin:64px 0 18px;font:500 27px/1.25 var(--sans);letter-spacing:-.01em;color:var(--ink);
  padding-top:18px;border-top:1px solid var(--line-2);
}
article h3{margin:38px 0 12px;font:500 18px/1.35 var(--sans);color:var(--ink)}
article p{margin:0 0 18px;font:300 17px/1.72 var(--sans);color:#c3ccd3}
article p strong{color:var(--ink);font-weight:500}
article em{color:var(--ink);font-style:italic}
article a{color:var(--accent);text-decoration:none;border-bottom:1px solid rgba(76,201,224,.32)}
article a:hover{border-bottom-color:var(--accent)}
article ol,article ul{margin:0 0 18px;padding-left:22px}
article li{margin:0 0 10px;font:300 17px/1.7 var(--sans);color:#c3ccd3}
article li strong{color:var(--ink);font-weight:500}

code{
  font:400 .88em/1.5 var(--mono);background:rgba(255,255,255,.07);
  padding:2px 6px;border-radius:5px;color:#cfe6ec;
}
pre{
  margin:0 0 22px;padding:16px 18px;overflow-x:auto;
  background:rgba(255,255,255,.035);border:1px solid var(--line-2);border-radius:11px;
}
pre code{background:none;padding:0;font-size:13.2px;line-height:1.65;color:#b9c7cf}

/* ---------- figures ---------- */
figure{margin:30px 0;text-align:center}
figure img{
  max-width:100%;height:auto;border-radius:12px;
  border:1px solid var(--line-2);background:#0a0d10;
  box-shadow:0 14px 40px rgba(0,0,0,.42);
}
figcaption{
  margin-top:11px;font:400 13px/1.6 var(--sans);color:var(--ink-3);
  max-width:560px;margin-left:auto;margin-right:auto;
}
.trio{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.trio img{border-radius:12px}

/* ---------- tables ---------- */
.tw{overflow-x:auto;margin:0 0 24px;-webkit-overflow-scrolling:touch}
table{width:100%;border-collapse:collapse;font:400 14.5px/1.5 var(--sans)}
th,td{padding:11px 13px;text-align:left;border-bottom:1px solid var(--line-2)}
th{
  font:600 10.5px/1 var(--mono);letter-spacing:.13em;text-transform:uppercase;
  color:var(--ink-3);border-bottom-color:var(--line);white-space:nowrap;
}
td{color:var(--ink-2)}
td strong{color:var(--ink);font-weight:600}
tbody tr:hover td{background:rgba(255,255,255,.022)}

/* ---------- callouts ---------- */
.note{
  margin:26px 0;padding:16px 18px;border-radius:12px;
  border:1px solid rgba(76,201,224,.26);background:rgba(76,201,224,.07);
}
.note.warn{border-color:rgba(232,176,75,.28);background:rgba(232,176,75,.07)}
.note b{
  display:block;font:600 10.5px/1 var(--mono);letter-spacing:.14em;
  text-transform:uppercase;color:var(--accent);margin-bottom:9px;
}
.note.warn b{color:var(--warn)}
.note p{margin:0;font-size:15.5px;line-height:1.65;color:#bcd6de}
.note.warn p{color:#e6cb95}

/* ---------- contents ---------- */
nav.toc{
  margin:44px 0 0;padding:20px 22px;border:1px solid var(--line-2);border-radius:13px;
  background:rgba(255,255,255,.022);
}
nav.toc b{
  display:block;font:600 10.5px/1 var(--mono);letter-spacing:.14em;
  text-transform:uppercase;color:var(--ink-3);margin-bottom:13px;
}
nav.toc ol{margin:0;padding-left:19px;columns:2;column-gap:26px}
nav.toc li{margin:0 0 8px;font-size:14.5px;line-height:1.5}
nav.toc a{color:var(--ink-2);border:0}
nav.toc a:hover{color:var(--accent)}

footer.end{
  max-width:760px;margin:0 auto;padding:0 22px 80px;text-align:center;
}
footer.end a{
  display:inline-flex;align-items:center;gap:9px;
  padding:13px 22px;border-radius:11px;border:1px solid var(--line);
  color:var(--ink);text-decoration:none;font:500 14px/1 var(--sans);transition:.15s;
}
footer.end a:hover{background:rgba(76,201,224,.12);border-color:rgba(76,201,224,.5);color:var(--accent)}

@media (max-width:720px){
  .hero{padding:40px 18px 4px}
  .hero h1{font-size:32px}
  .hero .lede{font-size:16.5px}
  article{padding:0 18px 70px}
  article h2{font-size:22px;margin-top:48px}
  article p,article li{font-size:16px}
  nav.toc ol{columns:1}
  .trio{grid-template-columns:1fr;gap:16px}
  header.bar{padding:11px 14px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
}