/* Blog post (detail) page. Reuses css/blog.css (tokens, nav, .top hero, .close, footer,
   .uc-card cards, shared utilities). Adds the reading-progress bar, the post header, the
   two-column body (sticky TOC + prose), the takeaway box, and the "keep reading" block. */

/* ---------- reading progress ---------- */
.prog{position:fixed;top:0;left:0;right:0;height:2px;z-index:95;background:transparent;pointer-events:none;}
.prog i{display:block;height:100%;width:0;background:var(--foreground);transition:width .08s linear;}

/* ---------- post header ---------- */
.phead{padding:clamp(2.5rem,6vh,4rem) 0 clamp(2.5rem,6vh,4rem);}
.pmeta{
  display:flex;flex-wrap:wrap;align-items:center;gap:.625rem;
  margin-bottom:clamp(1.5rem,3.5vh,2.25rem);
  font-size:.6875rem;font-weight:600;text-transform:uppercase;letter-spacing:.12em;
}
.pmeta a{color:oklch(1 0 0 / .5);text-decoration:none;transition:color .15s;}
.pmeta a:hover{color:#fff;}
.pmeta .sep{color:oklch(1 0 0 / .3);}
.pmeta .cat{padding:.1875rem .5625rem;border-radius:9999px;background:#fff;color:var(--foreground);font-size:.5625rem;letter-spacing:.09em;}
.pmeta time,.pmeta .read{color:oklch(1 0 0 / .5);font-weight:500;letter-spacing:.06em;}
.phead h1{margin:0;color:#fff;max-width:26ch;font-size:clamp(2rem,5.2vw,3.75rem);font-weight:600;line-height:1.03;letter-spacing:-.036em;}
.pstand{margin:clamp(1.125rem,2.5vh,1.75rem) 0 0;max-width:52ch;color:oklch(1 0 0 / .68);font-size:clamp(1rem,1.5vw,1.1875rem);line-height:1.6;}

/* ---------- post body ---------- */
.pbody{background:var(--background);color:var(--foreground);padding:clamp(3rem,7vh,5rem) var(--side) clamp(4rem,9vh,7rem);}
.pgrid{display:grid;grid-template-columns:minmax(0,15rem) minmax(0,1fr);gap:clamp(2rem,5vw,4rem);align-items:start;max-width:72rem;margin-inline:auto;}

/* table of contents */
.toc{position:sticky;top:calc(var(--nav-h,5.5rem) + clamp(1rem,3vh,1.75rem));}
.toc-h{display:block;margin-bottom:1rem;font-size:.625rem;font-weight:600;text-transform:uppercase;letter-spacing:.12em;color:var(--muted-foreground);}
.toc ol{list-style:none;margin:0;padding:0;border-left:1px solid var(--border);}
.toc li{position:relative;}
.toc a{display:block;padding:.5rem 0 .5rem 1rem;color:var(--muted-foreground);text-decoration:none;font-size:.8125rem;line-height:1.4;transition:color .25s;}
.toc a::before{content:"";position:absolute;left:-1px;top:0;bottom:0;width:1px;background:var(--foreground);transform:scaleY(0);transform-origin:center;transition:transform .3s cubic-bezier(.16,1,.3,1);}
.toc a:hover{color:var(--foreground);}
.toc a.on{color:var(--foreground);font-weight:600;}
.toc a.on::before{transform:scaleY(1);}
.toc-share{display:flex;gap:.5rem;margin-top:1.75rem;padding-top:1.5rem;border-top:1px solid var(--border);}
.sh{
  display:inline-flex;align-items:center;justify-content:center;
  width:2rem;height:2rem;border-radius:9999px;
  border:1px solid var(--border);color:var(--muted-foreground);
  background:none;cursor:pointer;transition:all .25s cubic-bezier(.16,1,.3,1);
}
.sh svg{width:.8125rem;height:.8125rem;}
.sh:hover{background:var(--foreground);color:var(--background);border-color:transparent;transform:translateY(-2px);}

/* takeaways */
.takeaway{padding:clamp(1.375rem,2.4vw,1.875rem);border-radius:var(--r-4xl);background:var(--foreground);color:oklch(0.985 0 0);margin-bottom:clamp(2.5rem,5vh,3.5rem);}
.takeaway-h{display:block;margin-bottom:1.125rem;font-size:.625rem;font-weight:600;text-transform:uppercase;letter-spacing:.12em;color:oklch(1 0 0 / .5);}
.takeaway ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.75rem;}
.takeaway li{display:flex;gap:.75rem;font-size:.9375rem;line-height:1.55;color:oklch(1 0 0 / .82);}
.takeaway i{flex-shrink:0;display:flex;align-items:center;justify-content:center;width:1.125rem;height:1.125rem;border-radius:9999px;margin-top:.1875rem;background:#fff;color:var(--foreground);}
.takeaway i svg{width:.625rem;height:.625rem;}
.takeaway b{color:#fff;font-weight:600;}

/* prose */
.art{max-width:none;}   /* the .pgrid content column now sets the reading width */
.art h2{margin:clamp(2.75rem,6vh,4rem) 0 1rem;font-size:clamp(1.375rem,2.6vw,1.875rem);font-weight:600;line-height:1.15;letter-spacing:-.028em;scroll-margin-top:calc(var(--nav-h,5.5rem) + 1rem);}
.art h2:first-child{margin-top:0;}
.art h3{margin:clamp(1.75rem,4vh,2.5rem) 0 .75rem;font-size:clamp(1.0625rem,1.6vw,1.25rem);font-weight:600;line-height:1.2;letter-spacing:-.02em;}
.art p{margin:0 0 1.125rem;font-size:1rem;line-height:1.75;color:color-mix(in oklch,var(--foreground) 80%,transparent);}
.art strong{font-weight:600;color:var(--foreground);}
.art a{color:var(--foreground);text-decoration:none;border-bottom:1px solid var(--border);}
.art a:hover{border-bottom-color:var(--foreground);}
.art ul,.art ol{margin:0 0 1.375rem;padding-left:1.375rem;}
.art li{margin-bottom:.625rem;font-size:1rem;line-height:1.7;color:color-mix(in oklch,var(--foreground) 80%,transparent);}
.art li::marker{color:var(--muted-foreground);font-weight:600;}
.art blockquote{margin:clamp(2rem,4vh,2.75rem) 0;padding-left:1.375rem;border-left:2px solid var(--foreground);}
.art blockquote p{margin:0;font-size:clamp(1.0625rem,1.7vw,1.3125rem);line-height:1.55;letter-spacing:-.018em;color:var(--foreground);}
.art table{width:100%;border-collapse:collapse;margin:0 0 1.5rem;}
.art th,.art td{text-align:left;padding:.75rem .75rem;border-bottom:1px solid var(--border);font-size:.875rem;}
.art th{font-size:.625rem;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--muted-foreground);border-bottom-color:var(--foreground);}
.art th:first-child,.art td:first-child{padding-left:0;}
.art td:first-child{font-weight:600;color:var(--foreground);}
.note{margin:clamp(2rem,4vh,2.75rem) 0 0;padding-top:1.25rem;border-top:1px solid var(--border);font-size:.8125rem;line-height:1.6;color:var(--muted-foreground);}

/* ---------- more posts ---------- */
.morep{background:var(--secondary);color:var(--foreground);padding:clamp(3.5rem,8vh,6rem) var(--side);}
.morep-h{display:flex;flex-wrap:wrap;align-items:end;gap:1rem 2rem;padding-bottom:clamp(2rem,4.5vh,3rem);}
.morep h2{margin:0;font-size:clamp(1.5rem,3.4vw,2.5rem);font-weight:600;line-height:1.05;letter-spacing:-.03em;text-transform:uppercase;}
.morep h2 .dim{color:var(--muted-foreground);}
.morep-h .textlink{margin-left:auto;}
.pcards{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(.875rem,1.6vw,1.375rem);}

@media (max-width:1040px){
  .pgrid{grid-template-columns:1fr;}
  .toc{position:static;}
  .toc ol{display:flex;flex-wrap:wrap;border-left:0;border-top:1px solid var(--border);padding-top:.5rem;}
  .toc a{padding:.375rem 1rem .375rem 0;}
  .toc a::before{display:none;}
  .art{max-width:none;}
  .pcards{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:640px){
  .pcards{grid-template-columns:1fr;}
  .morep-h .textlink{margin-left:0;}
}