/* Devplan — content pages (blog, post, privacy, terms)
   Mirrors landing page tokens for visual consistency. */

:root{
  --paper:#FFFFFF;
  --paper-off:#F7F7F8;
  --paper-tint:#FBFBFC;
  --paper-rule:#ECECEE;
  --paper-rule-strong:#D9D9DD;
  --ink:#0A0A0B;
  --ink-2:#1A1A1C;
  --ink-dim:#52525A;
  --ink-faint:#8A8A92;

  --night:#0A0A0B;
  --night-rule:rgba(255,255,255,.10);
  --night-dim:#A0A0A6;
  --night-faint:#5C5C62;

  --accent:#1F3DFF;
  --accent-on-dark:#5A77FF;
  --accent-soft:rgba(31,61,255,.10);

  --sans:"Geist", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --mono:"JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --content-w: 720px;
  --maxw: 1440px;
}

*,*::before,*::after{ box-sizing:border-box; }
html,body{ margin:0; padding:0; }
html{ background:var(--paper); }
body{
  font-family:var(--sans);
  font-weight:400;
  font-size:16px;
  line-height:1.65;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  font-feature-settings:"ss01","ss03","cv11";
}
::selection{ background:var(--accent); color:#fff; }
a{ color:var(--accent); text-decoration:none; transition:color .2s ease; }
a:hover{ color:var(--ink); text-decoration:underline; text-underline-offset:3px; }

.eyebrow{
  font-family:var(--mono);
  font-size:11px; font-weight:500;
  letter-spacing:.18em; text-transform:uppercase;
  color:var(--ink-dim);
  display:inline-flex; align-items:center; gap:10px;
}
.eyebrow .dot{
  width:6px; height:6px; background:var(--accent); border-radius:50%;
  box-shadow:0 0 0 4px rgba(31,61,255,.12);
}

/* ───────── Nav ───────── */
.nav{
  position:sticky; top:0; z-index:50;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(14px) saturate(160%);
  -webkit-backdrop-filter:blur(14px) saturate(160%);
  border-bottom:1px solid var(--paper-rule);
}
.nav-inner{
  width:100%; max-width:var(--maxw); margin:0 auto;
  padding-left:clamp(16px, 2vw, 28px);
  padding-right:clamp(16px, 2vw, 28px);
  display:flex; align-items:center; justify-content:space-between;
  height:68px;
}
.logo{
  display:inline-flex; align-items:center; height:24px;
  color:var(--ink);
}
.logo svg{ height:24px; width:auto; display:block; color:var(--ink); }
.nav-meta{ display:flex; align-items:center; gap:18px; }
.nav-link{
  font-family:var(--sans); font-size:13px; font-weight:500;
  color:var(--ink-dim); padding:10px 4px;
  letter-spacing:-0.005em;
}
.nav-link:hover{ color:var(--ink); text-decoration:none; }
.nav-login{
  font-family:var(--sans); font-size:13px; font-weight:500;
  color:var(--ink); background:transparent;
  padding:10px 14px; border-radius:6px;
  border:1px solid var(--paper-rule);
  letter-spacing:-0.005em;
  transition:border-color .25s ease, background .25s ease;
}
.nav-login:hover{ border-color:var(--ink); background:var(--paper-tint); text-decoration:none; }
.nav-cta{
  font-family:var(--sans); font-size:13px; font-weight:500;
  color:#fff; background:var(--ink);
  padding:10px 16px; border-radius:6px;
  letter-spacing:-0.005em;
  display:inline-flex; align-items:center; gap:8px;
  transition:background .25s ease;
}
.nav-cta:hover{ background:var(--accent); color:#fff; text-decoration:none; }
.nav-cta .arrow{ transition:transform .25s ease; }
.nav-cta:hover .arrow{ transform:translateX(3px); }
@media (max-width:760px){
  .nav-link{ display:none; }
  .nav-login{ display:none; }
}

/* ───────── Page shell ───────── */
.page-shell{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:clamp(56px, 7vw, 96px) clamp(20px, 4vw, 56px) clamp(80px, 10vw, 144px);
}

/* ───────── Page (privacy/terms) header ───────── */
.page-header,
.post-header{
  max-width:var(--content-w);
  margin:0 auto clamp(36px, 5vw, 64px);
  display:flex; flex-direction:column; gap:18px;
}
.page-header h1,
.post-header h1{
  font-family:var(--sans);
  font-weight:400;
  font-size:clamp(34px, 4.6vw, 60px);
  line-height:1.05;
  letter-spacing:-0.028em;
  margin:6px 0 0;
  color:var(--ink);
  max-width:22ch;
}
.page-meta,
.post-meta{
  font-family:var(--mono); font-size:11px;
  letter-spacing:.16em; text-transform:uppercase;
  color:var(--ink-faint);
  display:flex; gap:14px; flex-wrap:wrap; align-items:center;
}
.post-meta .sep{ color:var(--paper-rule-strong); }

.post-cover{
  max-width:var(--maxw); margin:0 auto clamp(28px, 4vw, 48px);
}
.post-cover img{
  width:100%; height:auto; display:block;
  border-radius:10px; border:1px solid var(--paper-rule);
}

/* ───────── Long-form prose ───────── */
.prose{
  max-width:var(--content-w);
  margin:0 auto;
  font-size:17px;
  line-height:1.7;
  color:var(--ink-2);
  letter-spacing:-0.005em;
}
.prose > * + *{ margin-top:1.1em; }
.prose h2{
  font-family:var(--sans); font-weight:500;
  font-size:clamp(22px, 2.4vw, 28px);
  line-height:1.2; letter-spacing:-0.02em;
  margin:2em 0 .6em;
  color:var(--ink);
}
.prose h3{
  font-family:var(--sans); font-weight:500;
  font-size:19px; line-height:1.25; letter-spacing:-0.015em;
  margin:1.6em 0 .4em;
  color:var(--ink);
}
.prose p{ margin:0 0 1.1em; }
.prose a{ color:var(--accent); border-bottom:1px solid rgba(31,61,255,.25); }
.prose a:hover{ color:var(--ink); border-bottom-color:var(--ink); text-decoration:none; }
.prose ul, .prose ol{ padding-left:1.4em; margin:0 0 1.2em; }
.prose li{ margin:.4em 0; }
.prose blockquote{
  margin:1.6em 0;
  padding:6px 0 6px 22px;
  border-left:2px solid var(--accent);
  font-family:var(--sans); font-weight:300;
  font-size:20px; line-height:1.45; letter-spacing:-0.012em;
  color:var(--ink);
}
.prose code{
  font-family:var(--mono);
  font-size:.9em;
  background:var(--paper-off);
  border:1px solid var(--paper-rule);
  border-radius:4px;
  padding:1px 6px;
}
.prose pre{
  font-family:var(--mono); font-size:13.5px;
  background:var(--paper-off);
  border:1px solid var(--paper-rule);
  border-radius:8px;
  padding:18px 20px;
  overflow-x:auto;
  line-height:1.55;
}
.prose pre code{ background:transparent; border:0; padding:0; font-size:inherit; }
.prose hr{
  border:0; border-top:1px solid var(--paper-rule);
  margin:2.4em 0;
}
.prose img{ max-width:100%; height:auto; border-radius:8px; border:1px solid var(--paper-rule); }
.prose table{
  border-collapse:collapse; width:100%;
  font-size:14.5px; margin:1.4em 0;
}
.prose th, .prose td{
  border-bottom:1px solid var(--paper-rule);
  padding:10px 12px; text-align:left;
}
.prose th{
  font-family:var(--mono); font-size:11px;
  letter-spacing:.14em; text-transform:uppercase;
  color:var(--ink-faint); font-weight:500;
}

.post-footer{
  max-width:var(--content-w); margin:clamp(48px, 6vw, 80px) auto 0;
  padding-top:24px; border-top:1px solid var(--paper-rule);
}
.post-back{
  font-family:var(--mono); font-size:12px;
  letter-spacing:.12em; text-transform:uppercase;
  color:var(--ink-dim);
}
.post-back:hover{ color:var(--ink); text-decoration:none; }

/* ───────── Blog index ───────── */
.blog-hero{
  max-width:var(--content-w);
  margin:0 auto clamp(48px, 6vw, 80px);
  display:flex; flex-direction:column; gap:18px;
}
.blog-hero h1{
  font-family:var(--sans); font-weight:400;
  font-size:clamp(38px, 5vw, 68px);
  line-height:1.02; letter-spacing:-0.032em;
  margin:6px 0 0; color:var(--ink); max-width:18ch;
}
.blog-hero h1 .dim{ color:var(--ink-faint); font-weight:300; }
.blog-hero p{
  font-size:17px; line-height:1.55;
  color:var(--ink-dim); max-width:50ch; margin:0;
}

.post-list{
  list-style:none; padding:0; margin:0;
  border-top:1px solid var(--paper-rule);
  max-width:var(--maxw);
  margin:0 auto;
}
.post-list li{
  border-bottom:1px solid var(--paper-rule);
}
.post-card{
  display:grid;
  grid-template-columns:120px 1fr auto;
  gap:clamp(20px, 4vw, 56px);
  align-items:baseline;
  padding:clamp(22px, 3vw, 36px) 0;
  color:var(--ink);
  text-decoration:none;
  transition:opacity .2s ease;
}
.post-card:hover{ opacity:.65; text-decoration:none; }
.post-card .when{
  font-family:var(--mono); font-size:11px;
  letter-spacing:.14em; text-transform:uppercase;
  color:var(--ink-faint);
}
.post-card .title{
  font-family:var(--sans); font-weight:400;
  font-size:clamp(20px, 2vw, 26px);
  line-height:1.25; letter-spacing:-0.02em;
  color:var(--ink);
}
.post-card .title .ex{
  display:block; margin-top:8px;
  font-size:15px; font-weight:400; line-height:1.5;
  letter-spacing:-0.005em; color:var(--ink-dim);
  max-width:60ch;
}
.post-card .arr{
  font-family:var(--mono); font-size:14px;
  color:var(--ink-faint);
  transition:transform .2s ease, color .2s ease;
}
.post-card:hover .arr{ transform:translateX(4px); color:var(--ink); }
@media (max-width:720px){
  .post-card{ grid-template-columns:1fr; gap:8px; }
  .post-card .arr{ display:none; }
}

.empty-state{
  font-family:var(--sans); color:var(--ink-dim);
  padding:48px 0; text-align:center;
  border-top:1px solid var(--paper-rule);
  border-bottom:1px solid var(--paper-rule);
}

/* ───────── Site footer (only the top-level <footer>, not the post-footer) ───────── */
body > footer{
  background:var(--night);
  border-top:1px solid var(--night-rule);
  padding:36px 0 44px;
  font-family:var(--sans); font-size:14px;
  color:var(--night-dim);
  letter-spacing:-0.005em;
}
body > footer a{ color:var(--night-dim); transition:color .2s ease; }
body > footer a:hover{ color:#fff; text-decoration:none; }
.foot{
  width:100%; max-width:var(--maxw); margin:0 auto;
  padding-left:clamp(16px, 2vw, 28px);
  padding-right:clamp(16px, 2vw, 28px);
  display:flex; justify-content:space-between; align-items:center;
  gap:24px; flex-wrap:wrap;
}
.foot .brand{
  color:#fff;
  display:inline-flex; align-items:center;
  height:22px;
}
.foot .brand svg{ height:22px; width:auto; display:block; color:#fff; }
.foot .links{ display:flex; gap:28px; flex-wrap:wrap; }