/* ==========================================================================
   Insights (the blog) — shared layer for /blog, every article (.bla) and every case study (.bcs).
   Components used on more than one page: the card, chips, share links, the newsletter sign-up, mark.
   Section styles live in assets/css/blog/<id>.css; the article and case-study templates in
   assets/css/blog/article.css and assets/css/blog/case.css. core.css tokens only: no colour literals,
   no gradients except mask fades, no !important.
   ========================================================================== */

/* search highlight */
.blg-card mark,.blg-mark{background:var(--blue-wash-2);color:inherit;border-radius:3px;padding:0 .08em}

/* ---------- the card ------------------------------------------------------ */
.blg-card{
  position:relative;display:flex;flex-direction:column;height:100%;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  transition:border-color var(--d2) var(--e),box-shadow var(--d3) var(--e),transform var(--d3) var(--e);
}
.blg-card:hover{border-color:var(--line-3);box-shadow:var(--sh-2);transform:translateY(-3px)}
.blg-card__a{display:flex;flex-direction:column;color:inherit}
.blg-card__a::after{content:"";position:absolute;inset:0;z-index:1}          /* the whole card opens the entry */
.blg-card__a:focus-visible{outline:none}
.blg-card:has(.blg-card__a:focus-visible){outline:2px solid var(--blue);outline-offset:3px}
.blg-card__fig{position:relative;aspect-ratio:3 / 2;overflow:hidden;background:var(--paper-3)}
.blg-card__img{display:block;width:100%;height:100%;object-fit:cover;transition:transform 1.1s var(--e)}
.blg-card:hover .blg-card__img{transform:scale(1.04)}
.blg-card__fig.is-empty{display:grid;place-items:center}
.blg-card__ph{font-family:var(--f);font-size:var(--t-lbl);letter-spacing:.16em;text-transform:uppercase;color:var(--faint)}
.blg-card__body{padding:clamp(18px,1.7vw,24px) clamp(18px,1.7vw,24px) 0}
.blg-card__meta{display:flex;flex-wrap:wrap;align-items:center;gap:.45em 1.1em;font-family:var(--f);font-size:var(--t-lbl);font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);line-height:1.4}
.blg-card__kind{color:var(--blue-d)}
.blg-card--case .blg-card__kind{display:inline-flex;align-items:center;height:22px;padding:0 8px;border-radius:var(--r-xs);background:var(--ink);color:var(--on-ink);letter-spacing:.12em}
.blg-card__t{margin-top:12px;font-family:var(--f-h);font-size:clamp(1.1rem,1.32vw,1.28rem);font-weight:500;line-height:1.24;letter-spacing:-.016em;color:var(--ink)}
.blg-card:hover .blg-card__t{text-decoration:underline;text-decoration-color:var(--blue-line);text-decoration-thickness:1px;text-underline-offset:4px}
.blg-card__more{display:flex;flex-direction:column;gap:12px;flex:1;padding:12px clamp(18px,1.7vw,24px) clamp(18px,1.7vw,24px)}
.blg-card__client{font-size:var(--t-sm);font-weight:500;line-height:1.5;color:var(--ink)}
.blg-card__dek{font-size:var(--t-sm);line-height:1.62;color:var(--txt)}
.blg-card__foot{display:flex;flex-wrap:wrap;gap:.4em 1.2em;margin-top:auto;padding-top:6px;font-family:var(--f);font-size:var(--t-lbl);letter-spacing:.12em;text-transform:uppercase;color:var(--faint)}
.blg-card--sm .blg-card__dek{display:none}

/* ---------- the card grid (archive, related rows) ------------------------ */
.blg-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--bdh-gap)}
.blg-grid__it{min-width:0}
.blg-grid--1{grid-template-columns:minmax(0,440px)}
.blg-grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
@media (max-width:1100px){.blg-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.blg-grid--1{grid-template-columns:minmax(0,440px)}}
@media (max-width:680px){.blg-grid,.blg-grid--1,.blg-grid--2{grid-template-columns:minmax(0,1fr)}}
/* a card left alone on the last row spans it, laid out sideways (picture | words) instead of leaving a hole:
   three columns — one alone takes the row, a pair shares it; two columns — one alone takes the row */
@media (min-width:1101px){
  .blg-grid:not(.blg-grid--1):not(.blg-grid--2){grid-template-columns:repeat(6,minmax(0,1fr))}
  .blg-grid:not(.blg-grid--1):not(.blg-grid--2) > .blg-grid__it{grid-column:span 2}
  .blg-grid:not(.blg-grid--1):not(.blg-grid--2) > .blg-grid__it:nth-child(3n+1):nth-last-child(2),
  .blg-grid:not(.blg-grid--1):not(.blg-grid--2) > .blg-grid__it:nth-child(3n+1):nth-last-child(2) + .blg-grid__it{grid-column:span 3}
  .blg-grid:not(.blg-grid--1):not(.blg-grid--2) > .blg-grid__it:nth-child(3n+1):nth-last-child(2) .blg-card__fig,
  .blg-grid:not(.blg-grid--1):not(.blg-grid--2) > .blg-grid__it:nth-child(3n+1):nth-last-child(2) + .blg-grid__it .blg-card__fig{aspect-ratio:16 / 8}
  .blg-grid:not(.blg-grid--1):not(.blg-grid--2) > .blg-grid__it:nth-child(3n+1):last-child{grid-column:1 / -1}
  .blg-grid:not(.blg-grid--1):not(.blg-grid--2) > .blg-grid__it:nth-child(3n+1):last-child:not(:first-child) > .blg-card{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);grid-template-rows:auto 1fr}
  .blg-grid:not(.blg-grid--1):not(.blg-grid--2) > .blg-grid__it:nth-child(3n+1):last-child:not(:first-child) > .blg-card .blg-card__a{grid-column:1 / -1;grid-row:1 / -1;display:grid;grid-template-columns:subgrid;grid-template-rows:subgrid}
  .blg-grid:not(.blg-grid--1):not(.blg-grid--2) > .blg-grid__it:nth-child(3n+1):last-child:not(:first-child) > .blg-card .blg-card__fig{grid-column:1;grid-row:1 / -1;aspect-ratio:auto;min-height:clamp(240px,24vw,340px)}
  .blg-grid:not(.blg-grid--1):not(.blg-grid--2) > .blg-grid__it:nth-child(3n+1):last-child:not(:first-child) > .blg-card .blg-card__body{grid-column:2;grid-row:1;align-self:end}
  .blg-grid:not(.blg-grid--1):not(.blg-grid--2) > .blg-grid__it:nth-child(3n+1):last-child:not(:first-child) > .blg-card .blg-card__more{grid-column:2;grid-row:2}
}
@media (min-width:681px) and (max-width:1100px){
  .blg-grid > .blg-grid__it:nth-child(2n+1):last-child:not(:first-child){grid-column:1 / -1}
  .blg-grid > .blg-grid__it:nth-child(2n+1):last-child:not(:first-child) > .blg-card{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);grid-template-rows:auto 1fr}
  .blg-grid > .blg-grid__it:nth-child(2n+1):last-child:not(:first-child) > .blg-card .blg-card__a{grid-column:1 / -1;grid-row:1 / -1;display:grid;grid-template-columns:subgrid;grid-template-rows:subgrid}
  .blg-grid > .blg-grid__it:nth-child(2n+1):last-child:not(:first-child) > .blg-card .blg-card__fig{grid-column:1;grid-row:1 / -1;aspect-ratio:auto;min-height:240px}
  .blg-grid > .blg-grid__it:nth-child(2n+1):last-child:not(:first-child) > .blg-card .blg-card__body{grid-column:2;grid-row:1;align-self:end}
  .blg-grid > .blg-grid__it:nth-child(2n+1):last-child:not(:first-child) > .blg-card .blg-card__more{grid-column:2;grid-row:2}
}

/* ---------- chips -------------------------------------------------------- */
.blg-chip{
  position:relative;display:inline-flex;align-items:center;gap:.5em;min-height:36px;padding:0 14px;border-radius:var(--r-pill);
  background:var(--blue-wash);color:var(--blue-d);font-size:var(--t-xs);font-weight:500;line-height:1.3;
  transition:background var(--d1) var(--e-io),color var(--d1) var(--e-io);
}
.blg-chip:hover{background:var(--blue-wash-2);color:var(--ink)}
.blg-chip__k{font-family:var(--f);font-size:var(--t-lbl);letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.blg-chip__x{font-family:var(--f);font-size:.95rem;line-height:1;margin-left:.1em}

.blg-tag{display:inline-flex;align-items:center;min-height:34px;padding:0 13px;border:1px solid var(--line-3);border-radius:var(--r-pill);
  font-size:var(--t-xs);font-weight:500;color:var(--ink);background:var(--paper);transition:border-color var(--d1) var(--e-io),color var(--d1) var(--e-io)}
.blg-tag:hover{border-color:var(--blue);color:var(--blue-d)}
@media (max-width:680px){.blg-tag{min-height:44px;padding:0 15px}}

/* ---------- share links -------------------------------------------------- */
.blg-share{display:flex;flex-wrap:wrap;gap:8px}
.blg-share__b{
  display:inline-flex;align-items:center;gap:8px;min-height:40px;padding:0 15px;border:1px solid var(--line-3);border-radius:var(--r-pill);
  background:var(--paper);color:var(--ink);font-size:var(--t-xs);font-weight:500;line-height:1;white-space:nowrap;
  transition:border-color var(--d1) var(--e-io),color var(--d1) var(--e-io),background var(--d1) var(--e-io);
}
.blg-share__b:hover{border-color:var(--ink);background:var(--paper-2)}
.blg-share__b svg{width:16px;height:16px;flex:none;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.blg-share__b svg.f{fill:currentColor;stroke:none}
.blg-share__b.is-done{border-color:var(--blue);color:var(--blue-d)}
.blg-share--icons .blg-share__l{position:absolute;width:1px;height:1px;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.blg-share--icons .blg-share__b{width:44px;height:44px;min-height:44px;padding:0;justify-content:center}
@media (max-width:680px){.blg-share__b{min-height:44px}}

/* ---------- the newsletter sign-up --------------------------------------- */
.blg-signup{position:relative;display:flex;flex-direction:column;gap:20px}
.blg-signup__lbl{display:block;margin-bottom:9px;font-family:var(--f);font-size:var(--t-lbl);font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.blg-signup__line{display:flex;gap:10px}
.blg-signup__in{
  width:100%;min-width:0;height:52px;padding:0 16px;border:1px solid var(--line-3);border-radius:var(--r-sm);background:var(--paper);
  font-family:var(--f-b);font-size:var(--t-body);color:var(--ink);transition:border-color var(--d1) var(--e-io),box-shadow var(--d1) var(--e-io);
}
.blg-signup__in::placeholder{color:var(--faint)}
.blg-signup__in:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-wash-2)}
.blg-signup__in[aria-invalid="true"]{border-color:var(--ink);box-shadow:inset 3px 0 0 var(--ink)}
.blg-signup__go{flex:none;height:52px}
.blg-signup--full .blg-signup__go{align-self:flex-start}
.blg-signup__topics{border:0;padding:0;margin:0;min-width:0}
.blg-signup__help{margin:-2px 0 12px;font-size:var(--t-xs);line-height:1.55;color:var(--muted)}
.blg-signup__chips{display:flex;flex-wrap:wrap;gap:8px}
.blg-signup__note{font-size:var(--t-xs);line-height:1.6;color:var(--muted)}
.blg-signup__note a{color:var(--ink);text-decoration:underline;text-decoration-color:var(--blue-line);text-underline-offset:3px}
.blg-signup__status{font-size:var(--t-sm);line-height:1.55;color:var(--ink)}
.blg-signup__status:empty{display:none}
.blg-signup__status.is-bad{padding:12px 14px;border-radius:var(--r-sm);background:var(--paper-3);box-shadow:inset 3px 0 0 var(--ink)}
.blg-signup__done{display:flex;flex-direction:column;gap:12px;padding:6px 0}
.blg-signup__done-t{font-family:var(--f-h);font-size:var(--t-h3);font-weight:500;color:var(--ink)}
.blg-signup__done-x{font-size:var(--t-sm);line-height:1.6;color:var(--txt)}
.blg-signup__hp{position:absolute;left:-10000px;top:auto;width:1px;height:1px;overflow:hidden}

/* topic checkboxes as chips (the box stays real and focusable) */
.blg-tchip{position:relative;display:inline-flex;cursor:pointer}
.blg-tchip__in{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:pointer}
.blg-tchip__b{
  display:inline-flex;align-items:center;gap:8px;min-height:40px;padding:0 15px;border:1px solid var(--line-3);border-radius:var(--r-pill);
  background:var(--paper);font-size:var(--t-xs);font-weight:500;color:var(--txt);transition:background var(--d1) var(--e-io),color var(--d1) var(--e-io),border-color var(--d1) var(--e-io);
}
.blg-tchip__b::before{content:"";width:12px;height:12px;flex:none;border:1px solid var(--line-3);border-radius:3px;background:var(--paper);transition:background var(--d1) var(--e-io),border-color var(--d1) var(--e-io)}
.blg-tchip__in:hover + .blg-tchip__b{border-color:var(--ink);color:var(--ink)}
.blg-tchip__in:checked + .blg-tchip__b{background:var(--ink);border-color:var(--ink);color:var(--on-ink)}
.blg-tchip__in:checked + .blg-tchip__b::before{border-color:var(--blue);background:var(--blue);box-shadow:inset 0 0 0 2px var(--ink)}
.blg-tchip__in:focus-visible + .blg-tchip__b{outline:2px solid var(--blue);outline-offset:2px}
@media (max-width:680px){.blg-tchip__b{min-height:44px}}
@media (max-width:480px){
  .blg-signup--short .blg-signup__line{flex-direction:column}
  .blg-signup--short .blg-signup__go{width:100%}
}

/* ---------- a video embed before it is played (blg_embed_facades + assets/js/blog/embed.js) */
.blg-embed{position:absolute;inset:0;display:flex;flex-direction:column;align-items:flex-start;justify-content:flex-end;gap:8px;width:100%;height:100%;
  padding:clamp(18px,3vw,36px);border:0;border-radius:inherit;background-color:var(--ink);color:var(--on-ink);text-align:left;cursor:pointer}   /* + core .dots-ink */
.blg-embed__ico{position:absolute;left:50%;top:50%;display:grid;place-items:center;width:clamp(64px,8vw,88px);height:clamp(64px,8vw,88px);
  border-radius:50%;background:var(--blue);color:var(--on-ink);transform:translate(-50%,-50%);transition:transform var(--d2) var(--e),background var(--d1) var(--e-io)}
.blg-embed__ico svg{width:38%;height:38%;margin-left:6%;fill:currentColor}
.blg-embed:hover .blg-embed__ico{transform:translate(-50%,-50%) scale(1.06);background:var(--blue-d)}
.blg-embed:focus-visible{outline:2px solid var(--blue);outline-offset:-6px}   /* inside the box: it clips anything outside */
.blg-embed__t{max-width:36ch;font-family:var(--f-h);font-size:clamp(1rem,1.6vw,1.35rem);font-weight:500;line-height:1.25;color:var(--on-ink)}
.blg-embed__n{font-family:var(--f);font-size:var(--t-lbl);letter-spacing:.12em;text-transform:uppercase;color:var(--on-ink-3)}
.blg-embed__t{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:3;overflow:hidden}
@media (max-width:600px){
  .blg-embed{justify-content:space-between;gap:10px;padding:16px 18px}
  .blg-embed__ico{position:static;width:52px;height:52px;transform:none}
  .blg-embed:hover .blg-embed__ico{transform:scale(1.06)}
  .blg-embed__t{margin-top:auto;font-size:1rem;-webkit-line-clamp:2}
  .blg-embed__n{margin-top:-4px}
}
@media (prefers-reduced-motion:reduce){.blg-embed__ico{transition:none}.blg-embed:hover .blg-embed__ico{transform:translate(-50%,-50%)}}
@media (prefers-reduced-motion:reduce) and (max-width:600px){.blg-embed:hover .blg-embed__ico{transform:none}}

/* ---------- breadcrumb on the detail pages -------------------------------- */
.blg-crumb{display:flex;flex-wrap:wrap;align-items:center;gap:6px 10px;font-size:var(--t-xs);color:var(--muted)}
.blg-crumb a{color:var(--muted);text-decoration:underline;text-decoration-color:var(--line-3);text-underline-offset:3px}
.blg-crumb a:hover{color:var(--ink);text-decoration-color:var(--blue)}
.blg-crumb li+li::before{content:"/";margin-right:10px;color:var(--ghost)}
.blg-crumb li{display:inline-flex;align-items:center}
.band--ink .blg-crumb,.band--ink .blg-crumb a{color:var(--on-ink-3)}
.band--ink .blg-crumb a:hover{color:var(--on-ink)}
.band--ink .blg-crumb li+li::before{color:var(--on-ink-line)}
@media (max-width:680px){
  .blg-crumb a{display:inline-flex;align-items:center;min-height:44px}
  :is(.bla-cover__credit,.bcs-hero__credit,.bcs-fig__credit,.bcs-gal__cr,.xb-cap__credit) a{display:inline-flex;align-items:center;min-height:44px}
}

@media (prefers-reduced-motion:reduce){
  .blg-card,.blg-card__img{transition:none}
  .blg-card:hover{transform:none}
  .blg-card:hover .blg-card__img{transform:none}
}

/* ---------- print: the words, the pictures and the sources --------------- */
@media print{
  .nav,.sheet,.nav-scrim,.foot,.cta,.blg-share,.blg-signup,.bla-progress,.bla-rail--share,.bla-signup,.bcs-rail,.bla-related,.bcs-related{display:none}
  .band{padding-block:24px}
  a[href^="http"]::after{content:" (" attr(href) ")";font-size:.8em;color:var(--muted);word-break:break-all}
}

/* touch screens (phones and tablets): 44px tap targets (integrator, responsive pass) */
@media (pointer:coarse){
  .blg-share__b{min-height:44px}
}

/* narrow phones: three lines so a long resource title is not cut (integrator, responsive pass) */
@media (max-width:360px){.blg-embed__t{display:block;overflow:visible;-webkit-line-clamp:unset}}