/* =========================================================================
   SYSTMS — case.css
   Case-study page styling. Builds on styles.css + sections.css tokens.
   ========================================================================= */

/* ---- Sub-nav / back bar ------------------------------------------------- */
.casebar{
  border-bottom:1px solid var(--line);
  background:rgba(10,10,10,0.78); backdrop-filter:blur(12px);
}
.casebar-in{
  display:flex; align-items:center; justify-content:space-between;
  padding:14px var(--gutter); max-width:var(--maxw); margin:0 auto;
}
.casebar .back{
  display:inline-flex; align-items:center; gap:10px;
  font-size:11px; letter-spacing:0.2em; text-transform:uppercase; color:var(--text);
  transition:color .2s ease;
}
.casebar .back:hover{ color:var(--accent); }
.casebar .idx{ font-size:10px; letter-spacing:0.2em; text-transform:uppercase; color:var(--muted); }

/* ---- Case hero ---------------------------------------------------------- */
.case-hero{ position:relative; padding:74px 0 0; }
.case-hero .wrap{ position:relative; z-index:2; }
.case-h1{
  font-family:var(--display); font-weight:900; font-stretch:75%;
  letter-spacing:-0.035em; line-height:0.9;
  font-size:clamp(40px, 5.6vw, 92px);
  margin:22px 0 0; max-width:18ch;
}
.case-lede{
  margin:28px 0 0; max-width:60ch;
  font-size:clamp(14px,1.25vw,17px); line-height:1.7; color:var(--muted);
}
.case-lede .hl{ color:var(--text); }

/* meta strip */
.case-meta{
  display:grid; grid-template-columns:repeat(4,1fr); gap:0;
  margin:44px 0 0; border-top:1px solid var(--line); border-bottom:1px solid var(--line);
}
.case-meta .m{ padding:22px 24px 22px 0; }
.case-meta .m + .m{ padding-left:24px; border-left:1px solid var(--line); }
.case-meta dt{ font-size:10px; letter-spacing:0.2em; text-transform:uppercase; color:var(--muted); margin:0; }
.case-meta dd{
  margin:12px 0 0; font-family:var(--display); font-weight:900; font-stretch:75%;
  font-size:clamp(18px,1.8vw,26px); letter-spacing:-0.01em; line-height:1; color:var(--text);
}

/* hero media */
.case-hero-media{
  position:relative; margin:44px 0 0; aspect-ratio:16/9; overflow:hidden;
  border:1px solid var(--line-2); border-radius:8px; background:var(--panel-2);
}
.case-hero-media video, .case-hero-media img{ width:100%; height:100%; object-fit:cover; }
.case-hero-media .tag{
  position:absolute; top:14px; left:14px; z-index:4;
  font-size:9px; letter-spacing:0.2em; text-transform:uppercase; color:var(--text);
  background:rgba(10,10,10,0.72); backdrop-filter:blur(6px);
  border:1px solid var(--line-2); border-radius:4px; padding:6px 10px;
}
.case-hero-media .tag.acc{ background:var(--accent); color:var(--accent-ink); border-color:var(--accent); left:auto; right:14px; }

/* ---- Case section (numbered editorial block) ---------------------------- */
.case-sec{ border-top:1px solid var(--line); }
.case-grid{
  display:grid; grid-template-columns:300px 1fr; gap:clamp(36px,6vw,86px); align-items:start;
}
.case-rail{ position:relative; }
.case-rail .num{
  font-family:var(--display); font-weight:900; font-stretch:75%;
  font-size:clamp(56px,7vw,104px); line-height:0.8; letter-spacing:-0.04em;
  color:var(--text); opacity:0.12;
}
.case-rail .lab{
  display:flex; align-items:center; gap:12px; margin-top:18px;
  font-size:11px; letter-spacing:0.22em; text-transform:uppercase; color:var(--accent);
}
.case-rail .lab .line{ width:34px; height:1px; background:var(--accent); }
.case-body h3{
  font-family:var(--display); font-weight:900; font-stretch:75%;
  letter-spacing:-0.025em; line-height:0.96; font-size:clamp(28px,3.4vw,46px); margin:0;
  max-width:20ch;
}
.case-body p{
  margin:22px 0 0; font-size:14.5px; line-height:1.75; color:var(--muted); max-width:62ch;
}
.case-body p .hl{ color:var(--text); }
.case-body .media{
  position:relative; margin:34px 0 0; aspect-ratio:16/9; overflow:hidden;
  border:1px solid var(--line-2); border-radius:8px; background:var(--panel-2);
}
.case-body .media video, .case-body .media img{ width:100%; height:100%; object-fit:cover; }
.case-body .media .tag{
  position:absolute; top:14px; left:14px; z-index:4;
  font-size:9px; letter-spacing:0.2em; text-transform:uppercase; color:var(--text);
  background:rgba(10,10,10,0.72); border:1px solid var(--line-2); border-radius:4px; padding:6px 10px;
}

/* ---- Results stat band -------------------------------------------------- */
.case-results{
  display:grid; grid-template-columns:repeat(3,1fr); gap:1px; margin:34px 0 0;
  background:var(--line); border:1px solid var(--line); border-radius:10px; overflow:hidden;
}
.case-results .r{ background:var(--panel); padding:30px 26px; }
.case-results .r .v{
  font-family:var(--display); font-weight:900; font-stretch:75%;
  font-size:clamp(38px,4.4vw,60px); line-height:0.92; letter-spacing:-0.03em; color:var(--text);
}
.case-results .r .v .u-dot::after{ background:var(--accent); }
.case-results .r .k{ margin-top:14px; font-size:10.5px; letter-spacing:0.16em; text-transform:uppercase; color:var(--muted); line-height:1.5; }
.case-results .r.accent{ background:var(--accent); }
.case-results .r.accent .v, .case-results .r.accent .k{ color:var(--accent-ink); }

/* ---- Pull quote --------------------------------------------------------- */
.case-quote{
  margin:0; max-width:24ch;
  font-family:var(--display); font-weight:900; font-stretch:75%;
  letter-spacing:-0.02em; line-height:0.98; font-size:clamp(30px,4.4vw,62px); color:var(--text);
}
.case-quote .q{ color:var(--accent); }
.case-quote .by{
  display:block; margin-top:26px;
  font-family:var(--mono); font-weight:400; font-size:11px; letter-spacing:0.18em; text-transform:uppercase; color:var(--muted);
}

/* ---- Gallery ------------------------------------------------------------ */
.case-gallery{ display:grid; grid-template-columns:repeat(3,1fr); gap:16px; margin:6px 0 0; }
.case-tile{
  position:relative; aspect-ratio:1/1; overflow:hidden; border:1px solid var(--line-2);
  border-radius:6px; background:var(--panel-2);
}
.case-tile video, .case-tile img{ width:100%; height:100%; object-fit:cover; }
.case-tile .pat{
  position:absolute; inset:0;
  background:
    repeating-linear-gradient(135deg, rgba(0,0,0,0.12) 0 2px, transparent 2px 11px),
    var(--accent);
}
.case-tile .lb{
  position:absolute; left:12px; bottom:12px; z-index:3;
  font-size:9px; letter-spacing:0.18em; text-transform:uppercase; color:var(--text);
  background:rgba(10,10,10,0.6); border:1px solid var(--line-2); border-radius:4px; padding:5px 9px;
}

/* ---- Final CTA ---------------------------------------------------------- */
.case-cta{ border-top:1px solid var(--line); text-align:center; position:relative; overflow:hidden; }
.case-cta .wrap{ position:relative; z-index:2; }
.case-cta h2{
  font-family:var(--display); font-weight:900; font-stretch:75%;
  letter-spacing:-0.03em; line-height:0.9; font-size:clamp(48px,8vw,116px); margin:18px 0 0;
}
.case-cta .row{ display:flex; gap:14px; justify-content:center; margin-top:34px; flex-wrap:wrap; }

/* ---- Next case ---------------------------------------------------------- */
.case-next{
  display:flex; align-items:center; justify-content:space-between; gap:24px;
  border-top:1px solid var(--line); padding:30px var(--gutter); max-width:var(--maxw); margin:0 auto;
}
.case-next a{ display:inline-flex; align-items:center; gap:12px; }
.case-next .lab{ font-size:10px; letter-spacing:0.2em; text-transform:uppercase; color:var(--muted); }
.case-next .nm{
  font-family:var(--display); font-weight:900; font-stretch:75%;
  font-size:clamp(22px,2.6vw,34px); letter-spacing:-0.02em; line-height:1; color:var(--text);
  transition:color .2s ease;
}
.case-next a:hover .nm{ color:var(--accent); }

@media (max-width:880px){
  .case-grid{ grid-template-columns:1fr; gap:22px; }
  .case-rail{ display:flex; align-items:baseline; gap:18px; }
  .case-rail .lab{ margin-top:0; }
  .case-meta{ grid-template-columns:1fr 1fr; }
  .case-meta .m:nth-child(3){ border-left:0; }
  .case-meta .m:nth-child(odd){ padding-left:0; }
  .case-meta .m:nth-child(even){ padding-left:24px; border-top:0; }
  .case-results{ grid-template-columns:1fr 1fr; }
  .case-gallery{ grid-template-columns:1fr 1fr; }
}
@media (max-width:520px){
  .case-meta{ grid-template-columns:1fr; }
  .case-meta .m + .m{ border-left:0; padding-left:0; border-top:1px solid var(--line); }
  .case-results{ grid-template-columns:1fr; }
}