/* ============================================================
   story.css — long-form case-study article layout.
   Ported from new-web-tp-helmi /use-case/c40 (Next.js + Tailwind)
   to plain CSS. Scoped under .story-shell so it never touches the
   shared .site-nav / .site-footer that come from styles.css.
   ============================================================ */

.story-shell{
  --s-text:      #18181B;
  --s-display:   #26251E;
  --s-muted:     #6B7280;
  --s-muted-2:   #4B5563;
  --s-muted-3:   #374151;
  --s-line:      #E5E7EB;
  --s-panel:     #F8F9FA;
  --s-dark:      #18181B;

  --s-serif:  "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --s-sans:   "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --s-label:  "Manrope", "Inter", system-ui, sans-serif;

  background:#fff;
  color:var(--s-text);
  font-family:var(--s-sans);
  -webkit-font-smoothing:antialiased;
}

.story-shell *,
.story-shell *::before,
.story-shell *::after{ box-sizing:border-box; }

.story-shell .ic-fill{ fill:currentColor; }

/* ---------- 3-column layout ---------- */
.story-layout{
  width:100%;
  display:flex; justify-content:center; align-items:flex-start;
  border-bottom:1px solid var(--s-line);
}

.story-rail{
  flex:1;
  display:flex; align-items:flex-start;
  position:sticky; top:92px;
  height:calc(100vh - 92px);
  padding:52px 40px;
  overflow:hidden;
}
.story-rail--left{ justify-content:flex-end; }
.story-rail--right{ justify-content:flex-start; overflow-y:auto; }

.story-home{
  display:inline-flex; align-items:center; gap:10px;
  min-height:48px; padding:12px 22px;
  font-size:17px; font-weight:600; color:var(--s-text);
  text-decoration:none;
  border:1px solid var(--s-line); border-radius:999px;
  align-self:flex-start;
  transition:background .15s, border-color .15s;
}
.story-home:hover{ background:rgba(10,15,46,.05); border-color:var(--s-text); }
.story-home svg{ width:19px; height:19px; flex:none; }

/* ---------- centre article column ---------- */
.story-main{
  width:100%;
  max-width:700px;
  flex-shrink:0;
  border-left:1px solid var(--s-line);
  border-right:1px solid var(--s-line);
  padding:48px 24px 64px;
  display:flex; flex-direction:column; gap:56px;
}

.story-section{
  scroll-margin-top:110px;
  display:flex; flex-direction:column; gap:22px;
}
.story-section__head{ display:flex; flex-direction:column; gap:10px; }
/* the metrics strip carries its own top borders — no extra flex gap */
#impact-in-numbers{ gap:0; }
/* a little more air around embedded media / quotes inside a section */
.story-section > .story-figure,
.story-section > .story-quote{ margin-block:6px; }
.story-section > .story-h3{ margin-top:6px; }

/* ---------- shared type ---------- */
.story-eyebrow{
  font-family:var(--s-label);
  font-size:11px; font-weight:800; text-transform:uppercase;
  letter-spacing:1.08px; color:var(--s-muted);
  display:flex; align-items:center; gap:8px;
}
.story-kicker{
  font-family:var(--s-label);
  font-size:11px; font-weight:800; text-transform:uppercase;
  letter-spacing:1.08px; color:var(--s-muted);
}

.story-h1{
  font-family:var(--s-serif); font-weight:400;
  font-size:clamp(30px,5vw,38px); line-height:1.1;
  letter-spacing:-.5px; color:var(--s-display);
  margin:0;
}
.story-h2{
  font-family:var(--s-serif); font-weight:400;
  font-size:clamp(28px,4vw,38px); line-height:1.1;
  letter-spacing:-.5px; color:var(--s-display);
  margin:0;
}
.story-h3{
  font-family:var(--s-serif); font-weight:400;
  font-size:clamp(24px,3.4vw,30px); line-height:1.12;
  letter-spacing:-.5px; color:var(--s-display);
  margin:0;
}

.story-prose{
  display:flex; flex-direction:column; gap:16px;
  font-size:18px; line-height:1.65; color:var(--s-text);
}
.story-prose p{ margin:0; }
.story-prose--intro{ font-size:18px; }

.story-list{
  margin:0; padding-left:1.15em;
  list-style:disc;
  display:flex; flex-direction:column; gap:10px;
  font-size:18px; line-height:1.6; color:var(--s-text);
}
.story-list li{ list-style:disc; }
.story-list li{ margin:0; }

/* ---------- header / hero ---------- */
.story-head{ display:flex; flex-direction:column; gap:20px; }

.story-figure{ display:flex; flex-direction:column; gap:8px; margin:0; }
.story-figure__ph{
  position:relative;
  aspect-ratio:16/10; width:100%;
  border:1px solid var(--s-line); border-radius:6px;
  background:
    repeating-linear-gradient(-45deg,#F3F4F6 0 12px,#EDEEF0 12px 24px);
  display:flex; align-items:center; justify-content:center;
}
.story-figure__ph::after{
  content:"Image placeholder";
  font-family:var(--s-label);
  font-size:11px; font-weight:800; letter-spacing:1px; text-transform:uppercase;
  color:#9CA3AF;
}
.story-figure__img{
  display:block; width:100%; aspect-ratio:16/10; object-fit:cover;
  border:1px solid var(--s-line); border-radius:6px; background:var(--s-panel);
}
.story-figure figcaption{
  font-size:14px; line-height:1.4; color:var(--s-muted);
}

/* ---------- at a glance ---------- */
.story-glance__bar{
  border-top:1px solid #000;
  padding:13px 0;
  display:flex; align-items:center; justify-content:space-between;
  font-family:var(--s-label);
  font-size:11px; font-weight:800; text-transform:uppercase; letter-spacing:1.08px;
  color:var(--s-muted);
}
.story-glance__grid{
  display:grid; grid-template-columns:repeat(3,1fr);
  border-top:1px solid var(--s-line);
}
.story-glance__cell{ padding:24px 24px 24px 0; }
.story-glance__cell + .story-glance__cell{
  border-left:1px solid var(--s-line);
  padding-left:24px;
}
.story-glance__num{
  display:block;
  font-family:var(--s-serif); font-weight:400;
  font-size:clamp(32px,6vw,44px); line-height:1;
  letter-spacing:-.5px; color:var(--s-display);
  margin-bottom:12px;
}
.story-glance__label{
  font-size:15px; line-height:1.45; color:var(--s-muted-2);
}
.story-glance__foot{
  border-top:1px solid var(--s-line);
  padding-top:16px;
  font-size:13px; color:var(--s-muted);
}

/* ---------- numbered rows (pillar card + steps) ---------- */
.story-card{
  border:1px solid var(--s-line); border-radius:8px;
  background:var(--s-panel);
  padding:24px;
  display:flex; flex-direction:column; gap:32px;
}
.story-card__head{ display:flex; flex-direction:column; gap:8px; }

.story-rows{ display:flex; flex-direction:column; gap:28px; }
.story-rows--tight{ gap:20px; }

.story-row__bar{
  border-top:1px solid #000;
  padding:13px 0;
  display:flex; align-items:center; gap:12px;
}
.story-row__n{
  font-family:var(--s-label);
  font-size:12px; font-weight:800; color:#000;
}
.story-row__rule{
  width:1px; height:15.5px; background:rgba(0,0,0,.1);
}
.story-row__label{
  font-family:var(--s-label);
  font-size:12px; font-weight:800; text-transform:uppercase;
  letter-spacing:1.08px; line-height:18px; color:#000;
}
.story-row__body{
  font-size:16px; line-height:1.6; color:var(--s-muted-3);
  margin:0;
}

/* ---------- adoption list ---------- */
.story-adopt{
  border-top:1px solid #000;
}
.story-adopt__item{
  border-bottom:1px solid var(--s-line);
  padding:14px 0;
  display:flex; align-items:center; justify-content:space-between; gap:16px;
}
.story-adopt__item h4{
  font-family:var(--s-label);
  font-size:12px; font-weight:800; text-transform:uppercase; letter-spacing:1.08px;
  color:#000; margin:0 0 4px;
}
.story-adopt__item p{
  font-size:15px; line-height:1.5; color:var(--s-muted-2); margin:0;
}
.story-adopt__item svg{ width:16px; height:16px; color:#9CA3AF; flex-shrink:0; }

/* ---------- pull quote ---------- */
.story-quote{
  background:var(--s-dark); color:#fff;
  border-radius:8px;
  padding:24px;
  display:flex; flex-direction:column; gap:16px;
}
.story-quote blockquote{
  margin:0;
  font-family:var(--s-serif); font-weight:400; font-style:normal;
  font-size:clamp(22px,4vw,30px); line-height:1.1; letter-spacing:-.5px;
  color:#fff;
}
.story-quote cite{
  font-family:var(--s-label);
  font-style:normal; font-weight:800;
  font-size:11px; text-transform:uppercase; letter-spacing:1.08px;
  color:#71717A;
}

/* ---------- replicable model grid ---------- */
.story-model{
  display:grid; grid-template-columns:repeat(3,1fr);
  border-top:1px solid #000;
}
.story-model__cell{
  padding:24px 24px 24px 0;
  display:flex; flex-direction:column; gap:16px;
}
.story-model__cell + .story-model__cell{
  border-left:1px solid var(--s-line);
  padding-left:24px;
}
.story-model__n{
  font-family:var(--s-label); font-size:12px; font-weight:800; color:#000;
}
.story-model__cell h3{
  font-size:17px; font-weight:600; line-height:1.4; color:var(--s-text); margin:0;
}
.story-model__cell p{
  font-size:16px; line-height:1.55; color:var(--s-text); margin:0;
}

/* ---------- share ---------- */
.story-share{
  border-top:1px solid #000;
  padding-top:12px;
  display:flex; flex-direction:column; gap:12px;
}
.story-share__row{ display:flex; align-items:center; gap:8px; }
.story-share__row a,
.story-share__row button{
  width:36px; height:36px;
  display:inline-flex; align-items:center; justify-content:center;
  border:1px solid var(--s-line); border-radius:999px;
  color:var(--s-muted-2); background:none; cursor:pointer;
  text-decoration:none;
}
.story-share__row a:hover,
.story-share__row button:hover{ background:#F3F4F6; color:var(--s-text); }
.story-share__row svg{ width:16px; height:16px; }
.story-share__ok{ color:#059669; }

/* ---------- you may also like ---------- */
.story-more{
  border-top:1px solid #000;
  padding-top:12px;
  display:flex; flex-direction:column; gap:20px;
}
.story-more h2{
  font-family:var(--s-serif); font-weight:400;
  font-size:clamp(22px,3vw,28px); line-height:1.1; letter-spacing:-.5px;
  color:var(--s-display); margin:0;
}
.story-more__grid{
  display:grid; grid-template-columns:repeat(3,1fr); gap:20px;
}
.story-more__card{ text-decoration:none; display:flex; flex-direction:column; gap:10px; }
.story-more__thumb{
  position:relative; aspect-ratio:16/10; width:100%;
  border:1px solid var(--s-line); border-radius:6px;
  overflow:hidden;
  background:
    repeating-linear-gradient(-45deg,#F3F4F6 0 12px,#EDEEF0 12px 24px);
}
.story-more__thumb img{ display:block; width:100%; height:100%; object-fit:cover; transition:transform .5s ease; }
.story-more__card:hover .story-more__thumb img{ transform:scale(1.04); }
.story-more__card span.k{
  font-family:var(--s-label);
  font-size:11px; font-weight:800; text-transform:uppercase; letter-spacing:1.08px;
  color:var(--s-muted);
}
.story-more__card h3{
  font-size:15px; font-weight:600; line-height:1.35; color:var(--s-text); margin:0;
}
.story-more__card:hover h3{ text-decoration:underline; }

/* ---------- right-hand TOC ---------- */
.story-toc{ width:240px; }
.story-toc h4{
  font-size:13px; font-weight:600; color:var(--s-text); margin:0 0 16px;
}
.story-toc nav{ display:flex; flex-direction:column; gap:10px; }
.story-toc a{
  font-size:14px; line-height:1.4; color:var(--s-muted);
  text-decoration:none; padding-left:14px;
  border-left:2px solid transparent;
}
.story-toc a:hover{ color:var(--s-text); }
.story-toc a.is-active{
  color:var(--s-text); font-weight:500;
  border-left-color:var(--s-text); padding-left:12px;
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  /* the left rail collapses to just the "Explore Our Past Work" button,
     kept at the top-left above the article */
  .story-layout{ flex-direction:column; align-items:stretch; }
  .story-rail--right{ display:none; }
  .story-rail--left{
    display:flex; position:static; height:auto; flex:none; overflow:visible;
    width:100%; max-width:720px; margin:0 auto; padding:24px 20px 0; justify-content:flex-start;
  }
  .story-main{ border-left:0; border-right:0; max-width:720px; margin:0 auto; }
}
@media (max-width:640px){
  .story-main{ padding:32px 20px 48px; gap:44px; }
  .story-glance__grid{ grid-template-columns:1fr; }
  .story-glance__cell{ padding:20px 0; }
  .story-glance__cell + .story-glance__cell{
    border-left:0; border-top:1px solid var(--s-line); padding-left:0;
  }
  .story-model{ grid-template-columns:1fr; }
  .story-model__cell{ padding:20px 0; }
  .story-model__cell + .story-model__cell{
    border-left:0; border-top:1px solid var(--s-line); padding-left:0;
  }
}