/* =========================================================
   Lumii AI — Blog (listing + article)
   Extends lumii.css tokens. Light, warm-neutral, editorial.
   ========================================================= */

/* ---------- Blog page header ---------- */
.blog-head{ padding-top:clamp(56px,7vw,96px); padding-bottom:clamp(40px,5vw,64px); }
.blog-head .h1{ margin-top:24px; font-size:clamp(40px,5.4vw,74px); }
.blog-head .lead{ margin-top:24px; max-width:34em; }

/* ---------- Striped editorial thumbnail (placeholder imagery) ---------- */
.blog-thumb{
  position:relative; overflow:hidden;
  border:1px solid var(--line); border-radius:var(--r-lg);
  background:var(--paper-2);
  background-image:repeating-linear-gradient(135deg, transparent, transparent 11px, rgba(20,20,26,.05) 11px, rgba(20,20,26,.05) 12px);
  display:flex; align-items:flex-end;
}
.blog-thumb::before{
  content:""; position:absolute; inset:0;
  background:radial-gradient(120% 120% at 18% 12%, var(--th-tint, rgba(225,98,60,.10)), transparent 62%);
  pointer-events:none;
}
.blog-thumb .th-img{
  position:absolute; inset:0; width:100%; height:100%;
  object-fit:cover; z-index:1; display:block;
  /* subtle unifying treatment so the photo set reads as one editorial system */
  filter:saturate(.88) contrast(1.03) brightness(1.01);
}
.blog-thumb:has(.th-img){ background-image:none; }
.blog-thumb:has(.th-img)::before{
  /* keep only a faint bottom scrim so the corner badge stays legible */
  background:linear-gradient(180deg, rgba(13,13,15,.04) 0%, transparent 22%, transparent 70%, rgba(13,13,15,.14) 100%);
}
.blog-thumb:has(.th-img) .th-label{ display:none; }
.blog-thumb .th-tag{
  position:absolute; top:16px; left:16px; z-index:2;
  font-family:var(--mono); font-size:11px; letter-spacing:.1em; text-transform:uppercase;
  color:var(--ink-2); background:var(--paper);
  border:1px solid var(--line); border-radius:999px; padding:6px 12px;
}
.blog-thumb .th-label{
  position:relative; z-index:1;
  font-family:var(--mono); font-size:11.5px; letter-spacing:.06em; color:var(--ink-3);
  background:var(--paper); border:1px solid var(--line); border-radius:999px;
  padding:6px 12px; margin:16px;
}
/* category tints, low-chroma so they stay neutral */
.t-news    { --th-tint:oklch(0.72 0.07 250 / .16); }
.t-insight { --th-tint:oklch(0.72 0.08 45  / .16); }
.t-customer{ --th-tint:oklch(0.72 0.07 165 / .16); }

/* ---------- Featured post ---------- */
.blog-feature{
  display:grid; grid-template-columns:1.18fr 1fr; gap:clamp(32px,4vw,64px);
  align-items:center;
  padding-bottom:clamp(40px,5vw,64px);
  border-bottom:1px solid var(--line);
}
.blog-feature .bf-thumb{ aspect-ratio:16/11; }
.blog-feature .bf-meta{
  display:flex; align-items:center; gap:14px;
  font-family:var(--mono); font-size:12px; letter-spacing:.04em; color:var(--ink-3);
}
.blog-feature .bf-cat{ color:var(--accent); }
.blog-feature .bf-dot{ width:3px; height:3px; border-radius:50%; background:var(--line-2); }
.blog-feature h2{
  font-size:clamp(26px,3vw,40px); font-weight:600; line-height:1.14; letter-spacing:-.02em;
  margin-top:20px; text-wrap:balance;
}
.blog-feature .bf-excerpt{
  color:var(--ink-2); font-size:clamp(15px,1.3vw,17px); line-height:1.65; margin-top:18px; max-width:36em;
}
.blog-feature .bf-cta{ margin-top:26px; }

/* ---------- Filter tabs ---------- */
.blog-filterbar{
  position:sticky; top:var(--nav-h); z-index:30;
  background:color-mix(in srgb, var(--paper) 90%, transparent);
  backdrop-filter:saturate(140%) blur(12px);
  border-bottom:1px solid var(--line);
  margin-top:clamp(40px,5vw,64px);
}
.blog-filter{
  display:flex; gap:6px; flex-wrap:wrap;
  padding-block:16px;
}
.blog-filter .ftab{
  font-size:14.5px; font-weight:500; color:var(--ink-2);
  background:transparent; border:1px solid transparent; border-radius:999px;
  padding:9px 18px; transition:color .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease);
}
.blog-filter .ftab:hover{ color:var(--ink); background:rgba(13,13,15,.04); }
.blog-filter .ftab.active{ color:var(--paper); background:var(--ink); border-color:var(--ink); }

/* ---------- Post grid ---------- */
.blog-grid{
  display:grid; grid-template-columns:repeat(3,1fr);
  gap:clamp(28px,3vw,44px) clamp(24px,2.4vw,36px);
  padding-block:clamp(44px,5vw,72px);
}
.post-card{
  display:flex; flex-direction:column; color:inherit; text-decoration:none;
  transition:transform .35s var(--ease);
}
.post-card .pc-thumb{ aspect-ratio:16/11; margin-bottom:20px; }
.post-card:hover .pc-thumb{ border-color:var(--line-2); }
.post-card .pc-meta{
  display:flex; align-items:center; gap:11px;
  font-family:var(--mono); font-size:11.5px; letter-spacing:.04em; color:var(--ink-3);
}
.post-card .pc-cat{ color:var(--accent); }
.post-card .pc-dot{ width:3px; height:3px; border-radius:50%; background:var(--line-2); }
.post-card h3{
  font-size:clamp(18px,1.55vw,21px); font-weight:600; line-height:1.32; letter-spacing:-.01em;
  margin-top:14px; transition:color .2s var(--ease); text-wrap:pretty;
}
.post-card:hover h3{ color:var(--accent); }
.post-card .pc-excerpt{
  color:var(--ink-2); font-size:14.5px; line-height:1.6; margin-top:12px;
}
.post-card.is-hidden{ display:none; }
.blog-empty{
  grid-column:1/-1; text-align:center; color:var(--ink-3);
  font-family:var(--mono); font-size:13px; letter-spacing:.06em;
  padding:64px 0;
}

@media (max-width:900px){
  .blog-feature{ grid-template-columns:1fr; gap:26px; }
  .blog-feature .bf-thumb{ aspect-ratio:16/9; order:-1; }
  .blog-grid{ grid-template-columns:repeat(2,1fr); }
}
@media (max-width:600px){
  .blog-grid{ grid-template-columns:1fr; }
}

/* =========================================================
   ARTICLE (detail) page
   ========================================================= */
.article-wrap{ max-width:760px; margin:0 auto; padding-inline:var(--gutter); }
.article-head{ padding-top:clamp(34px,4vw,52px); }
.article-meta{
  display:flex; align-items:center; gap:13px; flex-wrap:wrap;
  font-family:var(--mono); font-size:12.5px; letter-spacing:.04em; color:var(--ink-3);
}
.article-meta .am-cat{ color:var(--accent); }
.article-meta .am-dot{ width:3px; height:3px; border-radius:50%; background:var(--line-2); }
.article-head h1{
  font-size:clamp(32px,4.2vw,54px); font-weight:600; line-height:1.1; letter-spacing:-.025em;
  margin-top:22px; text-wrap:balance;
}
.article-head .article-dek{
  font-size:clamp(17px,1.5vw,20px); line-height:1.6; color:var(--ink-2);
  margin-top:22px; text-wrap:pretty;
}
.article-hero-thumb{
  max-width:1080px; margin:clamp(40px,5vw,64px) auto 0; padding-inline:var(--gutter);
}
.article-hero-thumb .blog-thumb{ aspect-ratio:16/7; }

/* prose */
.prose{ padding-block:clamp(44px,5vw,68px); }
.prose > *{ margin-block:0; }
.prose > * + *{ margin-top:1.5em; }
.prose p{ font-size:17.5px; line-height:1.78; color:var(--ink); }
.prose h2{
  font-size:clamp(23px,2.4vw,30px); font-weight:600; line-height:1.2; letter-spacing:-.015em;
  margin-top:2.2em; padding-top:.2em;
}
.prose h3{ font-size:clamp(19px,1.9vw,22px); font-weight:600; line-height:1.3; margin-top:1.8em; }
.prose h2 + p, .prose h3 + p{ margin-top:.9em; }
.prose ul, .prose ol{ padding-left:0; margin-top:1.3em; list-style:none; display:grid; gap:14px; }
.prose ul li{ position:relative; padding-left:26px; font-size:17px; line-height:1.7; color:var(--ink); }
.prose ul li::before{ content:""; position:absolute; left:2px; top:.72em; width:7px; height:7px; background:var(--accent); }
.prose ol{ counter-reset:li; }
.prose ol li{ position:relative; padding-left:38px; font-size:17px; line-height:1.7; color:var(--ink); counter-increment:li; }
.prose ol li::before{
  content:counter(li,decimal-leading-zero); position:absolute; left:0; top:.1em;
  font-family:var(--mono); font-size:12px; color:var(--ink-3); letter-spacing:.02em;
}
.prose strong{ font-weight:600; }
.prose blockquote{
  margin-top:1.8em; padding:4px 0 4px 28px; border-left:2px solid var(--accent);
  font-size:clamp(20px,2vw,26px); font-weight:500; line-height:1.45; letter-spacing:-.01em;
  color:var(--ink); text-wrap:balance;
}
.prose blockquote cite{ display:block; margin-top:14px; font-size:14px; font-weight:400; font-style:normal; color:var(--ink-3); font-family:var(--mono); letter-spacing:.04em; }
.prose .pull-key{
  border:1px solid var(--line); border-radius:var(--r-lg); background:var(--paper-2);
  padding:clamp(22px,2.6vw,32px); margin-top:2em;
}
.prose .pull-key .pk-lbl{ font-family:var(--mono); font-size:11px; letter-spacing:.12em; text-transform:uppercase; color:var(--ink-3); }
.prose .pull-key p{ font-size:16px; line-height:1.66; color:var(--ink-2); margin-top:12px; }
.prose figure{ margin:2em 0 0; }
.prose figure .blog-thumb{ aspect-ratio:16/8; }
.prose figcaption{ font-family:var(--mono); font-size:12px; color:var(--ink-3); margin-top:12px; letter-spacing:.02em; }
.prose hr{ border:0; border-top:1px solid var(--line); margin:2.6em 0; }

.article-foot{
  border-top:1px solid var(--line); margin-top:clamp(44px,5vw,64px);
  padding-top:clamp(28px,3vw,40px);
  display:flex; align-items:center; justify-content:space-between; gap:20px; flex-wrap:wrap;
}
.article-foot .af-share{ display:flex; gap:10px; align-items:center; font-family:var(--mono); font-size:12px; color:var(--ink-3); letter-spacing:.04em; }

/* related / more posts */
.more-posts{ border-top:1px solid var(--line); }
.more-posts .mp-head{ display:flex; align-items:baseline; justify-content:space-between; gap:20px; flex-wrap:wrap; }
.more-posts .mp-head h2{ font-size:clamp(22px,2.4vw,30px); font-weight:600; letter-spacing:-.015em; }