/* ════════════════════════════════
   CASE STUDY — shared styles
   ════════════════════════════════ */

.cs-page{
  padding-bottom:0;
}

/* ── BACK LINK ── */
.cs-back{
  display:inline-flex;align-items:center;gap:5px;
  font-size:12.5px;font-weight:500;color:var(--text);
  text-decoration:none;margin-bottom:36px;
  transition:color 180ms ease;
}
.cs-back-text{
  text-decoration:underline;
  text-decoration-color:var(--border);
  text-underline-offset:2px;
  text-decoration-thickness:1px;
  transition:text-decoration-color 180ms ease;
}
.cs-back:hover{color:var(--accent-text)}
.cs-back:hover .cs-back-text{text-decoration-color:var(--accent-text)}

/* ── HERO ── */
.cs-hero{
  padding:48px 0 56px;
  border-bottom:1px solid var(--border);
  margin-bottom:0;
}
.cs-hero .sec-label-eyebrow{margin-bottom:14px}
.cs-title{
  font-family:'Funnel Display',system-ui;
  font-size:40px;font-weight:700;color:var(--text);
  letter-spacing:-0.022em;line-height:1.15;
  margin-bottom:16px;
}
.cs-subtitle{
  font-size:15px;font-weight:400;color:var(--text-secondary);
  line-height:1.7;margin-bottom:32px;
  max-width:640px;
}
.cs-meta{
  display:flex;align-items:stretch;gap:0;
  border:1px solid var(--border);border-radius:10px;
  overflow:hidden;
  background:var(--card);
}
.cs-meta-item{
  display:flex;flex-direction:column;gap:4px;
  padding:14px 22px;flex:1;
  border-right:1px solid var(--border);
}
.cs-meta-item:last-child{border-right:none}
.cs-meta-label{
  font-size:10px;font-weight:600;color:var(--text-secondary);
  letter-spacing:.1em;text-transform:uppercase;
}
.cs-meta-value{
  font-size:13px;font-weight:500;color:var(--text);
}

/* ── SECTIONS ── */
.cs-section{
  padding:64px 0;
}
.cs-section > .sec-label-eyebrow{margin-bottom:10px}
.cs-act-break{border-top:1px solid var(--border)}

.cs-body-text{
  font-size:14px;font-weight:400;color:var(--text-secondary);
  line-height:1.8;margin-bottom:20px;
}
.cs-body-text:last-child{margin-bottom:0}

/* ── TEXT READING WIDTH ── */
.cs-body-text,
.cs-list-plain,
.cs-list-cross,
.cs-list-check,
.cs-insight,
.cs-quote,
.cs-pivot,
.cs-takeaways{max-width:640px}

/* ── BULLET LISTS ── */
.cs-list-plain{
  list-style:none;display:flex;flex-direction:column;gap:8px;
  margin-bottom:24px;
}
.cs-list-plain:last-child{margin-bottom:0}
.cs-list-plain li{
  font-size:13.5px;font-weight:400;color:var(--text-secondary);
  line-height:1.65;padding-left:18px;position:relative;
}
.cs-list-plain li::before{
  content:'';position:absolute;left:0;top:9px;
  width:4px;height:4px;border-radius:50%;background:var(--btn-secondary-border);
}

/* ── CROSS LIST ── */
.cs-list-cross{
  list-style:none;display:flex;flex-direction:column;gap:10px;
}
.cs-list-cross li{
  font-size:13.5px;font-weight:400;color:var(--text-secondary);
  line-height:1.65;padding-left:22px;position:relative;
}
.cs-list-cross li::before{
  content:'✗';position:absolute;left:0;top:0;
  font-size:12px;color:#D97070;font-weight:600;
}

/* ── CHECK LIST ── */
.cs-list-check{
  list-style:none;display:flex;flex-direction:column;gap:10px;
}
.cs-list-check li{
  font-size:13.5px;font-weight:400;color:var(--text-secondary);
  line-height:1.65;padding-left:22px;position:relative;
}
.cs-list-check li::before{
  content:'✓';position:absolute;left:0;top:0;
  font-size:12px;color:#4CAF82;font-weight:600;
}

.cs-list-sm li{font-size:12.5px}

/* ── KEY INSIGHT CALLOUT ── */
.cs-insight{
  margin:28px 0 0;
  padding:20px 24px;
  background:var(--hero-bg);
  border-left:3px solid var(--accent-text);
  border-radius:0 6px 6px 0;
}
.cs-insight-label{
  display:block;
  font-size:10px;font-weight:600;color:var(--text-secondary);
  letter-spacing:.1em;text-transform:uppercase;
  margin-bottom:8px;
}
.cs-insight p{
  font-size:14px;font-weight:500;color:var(--text);
  line-height:1.6;font-style:italic;margin:0;
}

/* ── QUOTE ── */
.cs-quote{
  margin:24px 0 0;
  padding:18px 24px;
  border-left:2px solid var(--border);
}
.cs-quote p{
  font-size:13.5px;font-weight:400;color:var(--text-secondary);
  line-height:1.7;font-style:italic;margin:0;
}

/* ── IMAGE PLACEHOLDERS ── */
.cs-placeholder{
  background:var(--hero-bg);
  border:1px solid var(--border);
  border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  color:var(--text-secondary);font-size:12px;font-weight:500;
  letter-spacing:.02em;
}

.cs-image-grid{
  margin:24px 0;
  display:grid;gap:12px;
}
.cs-grid-3x2{grid-template-columns:repeat(3,1fr)}
.cs-grid-3{grid-template-columns:repeat(3,1fr)}

.cs-caption{
  font-size:12px;font-weight:400;color:var(--text-secondary);
  line-height:1.6;text-align:center;margin-top:0;
}

.cs-placeholder-col{display:flex;flex-direction:column;gap:8px}
.cs-img-caption{
  font-size:11.5px;font-weight:400;color:var(--text-secondary);
  text-align:center;line-height:1.5;
}

/* ── BEFORE / AFTER ── */
.cs-before-after{
  display:grid;grid-template-columns:1fr 1fr;gap:24px;
  margin-top:4px;
}
.cs-ba-col{display:flex;flex-direction:column;gap:14px}
.cs-ba-label{
  font-size:10px;font-weight:600;letter-spacing:.1em;
  text-transform:uppercase;
}
.cs-ba-before{color:#D97070}
.cs-ba-after{color:#4CAF82}

/* ── SECTION HEADING ── */
.cs-section-heading{
  font-family:'Inter',system-ui;
  font-size:24px;font-weight:800;color:var(--text);
  letter-spacing:-0.02em;line-height:1.25;
  margin-bottom:20px;
}

/* ── HERO VISUAL ── */
.cs-hero-visual{
  margin-top:36px;height:380px;
  background:var(--hero-bg);border:1px solid var(--border);
  border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  color:var(--text-secondary);font-size:12.5px;font-weight:500;
  letter-spacing:.02em;
}

/* ── WORKFLOW STEPS ── */
.cs-workflow{
  display:flex;align-items:center;flex-wrap:wrap;
  justify-content:center;gap:2px;
  margin:24px 0 20px;padding:18px 24px;
  background:var(--hero-bg);border:1px solid var(--border);
  border-radius:10px;
}
.cs-workflow-step{
  display:flex;flex-direction:column;align-items:center;gap:3px;
  padding:6px 14px;
}
.cs-workflow-num{
  font-size:9.5px;font-weight:600;color:var(--text-secondary);
  letter-spacing:.08em;
}
.cs-workflow-label{font-size:13px;font-weight:500;color:var(--text)}
.cs-workflow-arrow{
  font-size:14px;color:var(--btn-secondary-border);
  flex-shrink:0;line-height:1;margin-top:10px;
}

/* ── DESIGN PIVOT CALLOUT ── */
.cs-pivot{
  padding:22px 26px;
  background:var(--accent-bg);
  border-left:3px solid var(--accent);
  border-radius:0 8px 8px 0;margin:4px 0;
}
.cs-pivot-text{font-size:14px;font-weight:500;color:var(--text);line-height:1.75;margin:0}

/* ── BEFORE / AFTER (redesigned) ── */
.cs-ba-wrapper{
  display:grid;grid-template-columns:1fr 52px 1fr;
  align-items:stretch;margin-top:24px;
  border:1px solid #E8E2D9;border-radius:16px;overflow:hidden;
}
.cs-ba-wrapper .cs-ba-col{padding:24px;gap:16px}
.cs-ba-before-col{background:rgba(217,112,112,.03)}
.cs-ba-after-col{background:rgba(76,175,130,.03)}
.cs-ba-divider{
  display:flex;align-items:center;justify-content:center;
  background:var(--hero-bg);
  border-left:1px solid var(--border);border-right:1px solid var(--border);
}
.cs-ba-arrow{font-size:18px;color:var(--btn-secondary-border)}
.cs-ba-header{display:flex;align-items:center;gap:10px;margin-bottom:4px}
.cs-ba-tag{
  font-size:9.5px;font-weight:700;letter-spacing:.08em;
  text-transform:uppercase;padding:3px 8px;border-radius:4px;flex-shrink:0;
}
.cs-ba-tag-before{background:rgba(217,112,112,.12);color:#C05050}
.cs-ba-tag-after{background:rgba(76,175,130,.12);color:#3A8B62}
.cs-ba-title{font-size:13px;font-weight:600;color:var(--text);margin:0}
.cs-ba-visual{width:100%;height:240px;flex-shrink:0}
.cs-ba-collage{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  grid-template-rows:repeat(2,minmax(0,1fr));
  gap:5px;
  overflow:hidden;
  border-radius:8px;
  background:#FAFAF9;
  border:1px solid #E8E2D9;
  padding:5px;
  box-sizing:border-box;
}
.cs-ba-collage img{
  width:100%;height:100%;
  min-height:0;
  object-fit:cover;object-position:top;
  display:block;border-radius:4px;
}
.cs-ba-after-img{
  overflow:hidden;
  border-radius:8px;
  border:1px solid #E8E2D9;
  background:#fff;
  box-sizing:border-box;
}
.cs-ba-after-img img{
  width:100%;height:100%;
  object-fit:cover;object-position:top;
  display:block;
}

/* ── KEY TAKEAWAYS ── */
.cs-takeaways{
  display:flex;flex-direction:column;gap:0;
}
.cs-takeaway-item{
  padding:28px 0;
  border-bottom:1px solid var(--border);
}
.cs-takeaway-item:last-child{border-bottom:none;padding-bottom:0}
.cs-takeaway-title{
  font-size:13.5px;font-weight:600;color:var(--text);
  margin-bottom:5px;
}
.cs-takeaway-desc{
  font-size:13px;font-weight:400;color:var(--text-secondary);
  line-height:1.6;
}

/* ── EXPLORE MORE ── */
.cs-explore{
  background:#EDE8DF;
  padding:64px 0 72px;
}
.cs-explore-heading{
  font-family:'Inter',system-ui;
  font-size:18px;font-weight:600;
  color:var(--text);
  letter-spacing:-0.01em;
  margin-bottom:28px;
}
.cs-explore-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:16px;
}
.cs-explore-card{
  display:flex;flex-direction:column;gap:8px;
  padding:20px;
  background:#fff;
  border:1px solid #DDD8D0;border-radius:12px;
  text-decoration:none;
  transition:border-color 160ms ease,box-shadow 160ms ease;
  cursor:pointer;
}
.cs-explore-card:hover{
  border-color:#CBC4B8;
  box-shadow:0 8px 24px rgba(40,35,30,.10),0 1px 4px rgba(40,35,30,.04);
}
.cs-explore-eyebrow{
  font-size:10px;font-weight:600;color:var(--text-secondary);
  letter-spacing:.1em;text-transform:uppercase;
}
.cs-explore-title{
  font-family:'Funnel Display',system-ui;
  font-size:15px;font-weight:700;color:var(--text);
  letter-spacing:-0.01em;line-height:1.25;
}
.cs-explore-desc{
  font-size:12.5px;font-weight:400;color:var(--text-secondary);
  line-height:1.6;flex:1;
}
.cs-explore-link{
  font-size:12px;font-weight:500;color:var(--text-secondary);
  transition:color 160ms ease;
  margin-top:4px;
}
.cs-explore-card:hover .cs-explore-link{color:var(--accent-text)}

/* ── COMING SOON (placeholder pages) ── */
.cs-coming-soon{
  min-height:calc(100vh - 56px);
  display:flex;align-items:center;justify-content:center;
  padding:48px;
}
.cs-coming-inner{
  max-width:480px;text-align:center;
}
.cs-coming-tag{
  display:inline-block;
  font-size:11px;font-weight:600;color:var(--accent-text);
  letter-spacing:.1em;text-transform:uppercase;
  background:var(--accent-bg);padding:5px 12px;border-radius:20px;
  margin-bottom:24px;
}
.cs-coming-title{
  font-family:'Funnel Display',system-ui;
  font-size:32px;font-weight:700;color:var(--text);
  letter-spacing:-0.02em;line-height:1.2;
  margin-bottom:14px;
}
.cs-coming-desc{
  font-size:14px;font-weight:400;color:var(--text-secondary);
  line-height:1.75;margin-bottom:32px;
}
.cs-coming-back{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:500;color:var(--text);
  background:var(--hero-bg);padding:10px 20px;border-radius:12px;
  border:1px solid var(--border);
  text-decoration:none;transition:background 160ms ease,border-color 160ms ease;
}
.cs-coming-back:hover{background:var(--btn-secondary-hover);border-color:var(--btn-secondary-border)}

/* ── STEP SCREENSHOT GRID ── */
.cs-step-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  row-gap:24px;
  column-gap:16px;
  margin:24px 0 0;
}
.cs-step-card{
  display:flex;flex-direction:column;
  border:1px solid #E8E2D9;
  border-radius:16px;
  overflow:hidden;
  background:#fff;
  box-shadow:0 2px 8px rgba(40,35,30,.05),0 1px 3px rgba(40,35,30,.03);
  transition:box-shadow 200ms ease,border-color 200ms ease;
}
.cs-step-card:hover{
  box-shadow:0 6px 18px rgba(40,35,30,.08),0 2px 5px rgba(40,35,30,.04);
  border-color:#D4C9B5;
}
.cs-step-meta{
  display:flex;align-items:center;gap:10px;
  padding:12px 16px;
  border-bottom:1px solid #E8E2D9;
  background:#FAFAF9;
  flex-shrink:0;
}
.cs-step-num{
  font-size:10px;font-weight:700;color:#A3A3A3;
  letter-spacing:.1em;
  background:#F0EFED;
  padding:3px 7px;border-radius:4px;
}
.cs-step-title{
  font-size:13px;font-weight:600;color:#111111;
}
.cs-step-img-wrap{
  position:relative;
  height:300px;
  overflow-y:auto;
  overflow-x:hidden;
  scroll-behavior:smooth;
  padding:16px;
  background:#fff;
  cursor:pointer;
}
.cs-step-img-wrap img{
  display:block;
  width:100%;
  height:auto;
  border-radius:6px;
}
.cs-step-expand{
  position:absolute;top:8px;right:8px;
  width:26px;height:26px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.9);
  border:1px solid #E0D6C8;
  border-radius:6px;
  color:#737373;
  cursor:pointer;
  opacity:0;
  transition:opacity 180ms ease,background 160ms ease,color 160ms ease;
  z-index:2;
  padding:0;
}
.cs-step-card:hover .cs-step-expand{opacity:1}
.cs-step-expand:hover{
  background:#fff;
  color:#111111;
  border-color:#B28A58;
}

/* ── LIGHTBOX ── */
.cs-lightbox{
  display:none;
  position:fixed;inset:0;z-index:1000;
  align-items:center;justify-content:center;
  padding:24px;
}
.cs-lightbox.open{display:flex}
.cs-lightbox-backdrop{
  position:absolute;inset:0;
  background:rgba(16,14,12,.88);
}
.cs-lightbox-content{
  position:relative;z-index:1;
  max-width:min(1200px,90vw);
  max-height:90vh;
  overflow:auto;
  border-radius:12px;
  line-height:0;
}
.cs-lightbox-close{
  position:fixed;top:20px;right:24px;
  width:36px;height:36px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.22);
  border-radius:8px;
  color:#fff;font-size:22px;line-height:1;
  cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:background 160ms ease;
  font-family:system-ui;
}
.cs-lightbox-close:hover{background:rgba(255,255,255,.24)}
.cs-lightbox-img{
  display:block;
  max-width:100%;height:auto;
  border-radius:8px;
}

/* ── CUSTOMER PORTAL CARDS ── */
.cs-portal-col{display:flex;flex-direction:column;gap:10px}
.cs-portal-card{
  display:flex;flex-direction:column;
  border:1px solid #E8E2D9;
  border-radius:16px;
  overflow:hidden;
  background:#fff;
  box-shadow:0 2px 8px rgba(40,35,30,.05),0 1px 3px rgba(40,35,30,.03);
  transition:box-shadow 200ms ease,border-color 200ms ease;
}
.cs-portal-card:hover{
  box-shadow:0 6px 18px rgba(40,35,30,.08),0 2px 5px rgba(40,35,30,.04);
  border-color:#D4C9B5;
}
.cs-portal-img-wrap{
  position:relative;
  height:270px;
  overflow:hidden;
  padding:20px;
  background:#fff;
  display:flex;align-items:center;justify-content:center;
}
.cs-portal-img-wrap img{
  display:block;
  max-width:100%;max-height:100%;
  width:auto;height:auto;
  object-fit:contain;
  border-radius:4px;
}
.cs-portal-img-wrap{cursor:pointer}
.cs-portal-card:hover .cs-step-expand{opacity:1}

/* ── FINAL DESIGN SHOWCASE ── */
.cs-final-showcase{
  padding:48px 0 0;
}
.cs-final-showcase > .sec-label-eyebrow{
  margin-bottom:24px;
}
.cs-final-img-wrap{
  position:relative;
  height:420px;
  overflow:hidden;
  background:#fff;
  border-radius:16px;
  border:1px solid #E8E2D9;
  box-shadow:0 4px 20px rgba(40,35,30,.08),0 1px 4px rgba(40,35,30,.04);
  margin-bottom:16px;
}
.cs-final-scroll{
  width:100%;height:100%;
  overflow-y:auto;overflow-x:hidden;
  scroll-behavior:smooth;
}
.cs-final-img-inner{
  position:relative;
  width:100%;
}
.cs-callout-pin{
  position:absolute;
  width:28px;height:28px;
  background:var(--accent);
  color:#fff;
  border-radius:50%;
  border:2px solid rgba(255,255,255,.85);
  display:inline-flex;align-items:center;justify-content:center;
  font-family:'Inter',system-ui;
  font-size:12px;font-weight:700;line-height:1;
  letter-spacing:0;
  box-shadow:0 2px 8px rgba(40,35,30,.3);
  transform:translate(-50%,-50%);
  cursor:pointer;user-select:none;
  z-index:4;padding:0;
  transition:transform 160ms ease,box-shadow 160ms ease;
}
.cs-callout-pin:hover,
.cs-callout-pin:focus-visible,
.cs-callout-pin.pin-active{
  transform:translate(-50%,-50%) scale(1.2);
  box-shadow:0 4px 12px rgba(40,35,30,.38);
}
.cs-callout-pin:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
}
.cs-callout-legend{
  list-style:none;
  display:flex;flex-direction:column;gap:8px;
  margin:14px 0 12px;
  max-width:680px;
}
.cs-callout-legend li{
  font-size:12.5px;font-weight:400;color:var(--text-secondary);
  line-height:1.5;
  display:flex;align-items:baseline;gap:7px;
  transition:color 150ms ease;
}
.cs-callout-legend li.pin-active{color:var(--text)}
.cs-callout-legend li.pin-active .cs-callout-num{color:var(--accent)}
.cs-callout-num{
  font-size:12px;font-weight:600;color:var(--accent-text);
  flex-shrink:0;
}
.cs-pin-tooltip{
  position:fixed;
  z-index:500;
  background:#1C1A17;
  color:#F0EDE8;
  border-radius:8px;
  padding:10px 13px;
  max-width:220px;
  pointer-events:none;
  opacity:0;
  visibility:hidden;
  transform:translateY(-4px);
  transition:opacity 140ms ease,transform 140ms ease,visibility 0s linear 140ms;
  font-family:'Inter',system-ui;
  font-size:12px;line-height:1.5;
  box-shadow:0 4px 16px rgba(0,0,0,.22);
}
.cs-pin-tooltip.visible{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
  transition:opacity 140ms ease,transform 140ms ease;
}
.cs-pin-tooltip-title{
  font-weight:600;font-size:12.5px;
  color:#F0EDE8;
  margin-bottom:2px;
}
.cs-pin-tooltip-desc{
  color:rgba(240,237,232,.72);
  font-size:11.5px;
}
.cs-final-img-wrap{
  cursor:pointer;
  transition:box-shadow 200ms ease,border-color 200ms ease;
}
.cs-final-img-wrap:hover{
  box-shadow:0 8px 28px rgba(40,35,30,.12),0 1px 4px rgba(40,35,30,.04);
  border-color:#D4C9B5;
}
.cs-final-image{
  display:block;
  width:100%;
  height:auto;
}
.cs-final-caption{
  font-size:12.5px;font-weight:400;color:var(--text-secondary);
  line-height:1.6;max-width:720px;
}

/* ── BEFORE / AFTER SCROLLABLE IMAGE ── */
.cs-ba-scroll-img{
  position:relative;
  height:340px;
  overflow-y:auto;
  overflow-x:hidden;
  scroll-behavior:smooth;
  border-radius:8px;
  border:1px solid #E8E2D9;
  background:#fff;
  flex-shrink:0;
}
.cs-ba-scroll-img img{
  width:100%;height:auto;display:block;
}
.cs-ba-scroll-img{cursor:pointer}
.cs-ba-scroll-img:hover .cs-step-expand{opacity:1}

/* ── CONTEXT NOTE ── */
.cs-context-note{
  padding:20px 0 28px;
}
.cs-context-note > .sec-label-eyebrow{
  margin-bottom:8px;
}
.cs-context-note .cs-body-text{
  font-size:13px;
  margin-bottom:0;
  max-width:560px;
}

/* ── ENTRANCE ANIMATIONS ── */
.cs-will-anim{
  opacity:0;
  transform:translateY(12px);
  transition:opacity 240ms ease-out,transform 240ms ease-out;
}
.cs-will-anim.cs-revealed{
  opacity:1;
  transform:translateY(0);
}
@media(prefers-reduced-motion:reduce){
  .cs-will-anim,.cs-will-anim.cs-revealed{opacity:1;transform:none;transition:none}
}

/* ── CASE STUDY CONTEXT NAV ── */
.nav .container{ position:relative; }

/* Logo becomes ← Portfolio in context mode */
.nav-logo{ transition:color 200ms ease, font-size 200ms ease, font-weight 200ms ease; }
.nav.cs-context .nav-logo{
  font-size:13px;font-weight:400;
  color:var(--text-secondary);letter-spacing:0;
}
.nav.cs-context .nav-logo:hover{ color:var(--text); }

/* Switcher wrap — absolute center */
.cs-nav-switcher-wrap{
  position:absolute;left:50%;top:50%;
  transform:translate(-50%,-50%);
  display:flex;flex-direction:column;align-items:center;
}

/* Switcher button */
.cs-nav-switcher{
  display:inline-flex;align-items:center;gap:5px;
  background:none;border:none;cursor:pointer;
  font-family:inherit;font-size:13px;font-weight:500;color:var(--text);
  padding:5px 10px;border-radius:6px;
  opacity:0;pointer-events:none;
  transition:opacity 220ms ease, background-color 150ms ease;
  max-width:340px;
}
.cs-nav-switcher-title{ overflow:hidden;text-overflow:ellipsis;white-space:nowrap; }
.cs-nav-switcher:hover{ background:rgba(0,0,0,0.04); }
.cs-nav-switcher:focus-visible{ outline:2px solid var(--accent);outline-offset:2px; }
.nav.cs-context .cs-nav-switcher{ opacity:1;pointer-events:auto; }

/* Chevron */
.cs-nav-chevron{ flex-shrink:0;opacity:0.5;transition:transform 200ms ease; }
.cs-nav-switcher[aria-expanded="true"] .cs-nav-chevron{ transform:rotate(180deg); }

/* Dropdown — position:fixed, placed by JS */
.cs-nav-dropdown{
  position:fixed;
  min-width:300px;max-width:calc(100vw - 16px);
  background:var(--bg);
  border:1px solid var(--border);
  border-radius:8px;padding:6px 0;
  box-shadow:0 4px 24px rgba(0,0,0,0.09),0 1px 4px rgba(0,0,0,0.04);
  opacity:0;visibility:hidden;pointer-events:none;
  transform:translateX(-50%) translateY(-6px);
  transition:opacity 160ms ease,transform 160ms ease,visibility 0s linear 160ms;
  z-index:200;
}
.cs-nav-dropdown.open{
  opacity:1;visibility:visible;pointer-events:auto;
  transform:translateX(-50%) translateY(0);
  transition:opacity 160ms ease,transform 160ms ease;
}
.cs-nav-dropdown-label{
  font-size:10px;font-weight:600;letter-spacing:0.08em;
  text-transform:uppercase;color:var(--text-secondary);
  padding:6px 14px 2px;margin:0;
}
.cs-nav-dropdown-item{
  display:flex;align-items:baseline;gap:8px;
  padding:9px 14px;font-size:13px;
  color:var(--text);text-decoration:none;
  transition:background 120ms ease;
}
.cs-nav-dropdown-item:hover{ background:rgba(0,0,0,0.03); }
.cs-nav-dropdown-item.active{ color:var(--accent-text);font-weight:500; }
.cs-nav-dropdown-item:focus-visible{ outline:2px solid var(--accent);outline-offset:-2px; }
.cs-nav-dropdown-check{
  font-size:11px;color:var(--accent);
  width:14px;flex-shrink:0;display:inline-block;text-align:center;
}
.cs-nav-dropdown-divider{ height:1px;background:var(--border);margin:4px 8px; }
.cs-nav-dropdown-viewall{
  display:block;padding:9px 14px 6px;
  font-size:13px;font-weight:500;
  color:var(--accent-text);text-decoration:none;
  transition:color 120ms ease;
}
.cs-nav-dropdown-viewall:hover{ color:var(--text); }
.cs-nav-dropdown-viewall:focus-visible{ outline:2px solid var(--accent);outline-offset:-2px; }

/* Collapse nav links */
.nav-link{
  overflow:hidden;max-width:160px;
  transition:opacity 220ms ease,max-width 220ms ease;
}
.nav.cs-context .nav-link{ opacity:0;max-width:0;pointer-events:none; }
.nav-links{ transition:gap 220ms ease; }
.nav.cs-context .nav-links{ gap:0; }

/* Reading progress bar */
.cs-reading-progress{
  position:fixed;top:66px;left:0;height:2px;
  background:var(--accent);width:0%;
  z-index:101;opacity:0;
  transition:width 60ms linear,opacity 240ms ease;
  pointer-events:none;
}
.cs-reading-progress.cs-progress-visible{ opacity:0.4; }

/* ── RESPONSIVE ── */
@media(max-width:768px){
  .cs-nav-switcher{ max-width:55%;font-size:12px; }
  .nav.cs-context .nav-resume{
    opacity:0;max-width:0;overflow:hidden;
    padding-left:0;padding-right:0;pointer-events:none;
  }
  .cs-nav-dropdown{ min-width:280px; }
}

/* ── RESPONSIVE ── */
@media(max-width:768px){
  .cs-page{padding-bottom:0}
  .cs-title{font-size:28px;line-height:1.2}
  .cs-subtitle{font-size:14px}
  .cs-hero{padding:36px 0 44px}
  .cs-meta{flex-direction:column}
  .cs-meta-item{border-right:none;border-bottom:1px solid var(--border);padding:12px 16px}
  .cs-meta-item:last-child{border-bottom:none}
  .cs-grid-3x2,.cs-grid-3{grid-template-columns:1fr}
  .cs-step-grid{grid-template-columns:1fr}
  .cs-step-img-wrap{height:220px}
  .cs-before-after{grid-template-columns:1fr}
  .cs-ba-wrapper{grid-template-columns:1fr}
  .cs-ba-divider{display:none}
  .cs-ba-before-col{border-bottom:1px solid var(--border)}
  .cs-workflow{flex-direction:column;align-items:flex-start;justify-content:flex-start;gap:0;padding:14px 20px}
  .cs-workflow-step{flex-direction:row;align-items:center;gap:10px;padding:4px 0}
  .cs-workflow-arrow{display:block;margin-top:0;font-size:0;padding:1px 0 1px 2px}
  .cs-workflow-arrow::before{content:'↓';font-size:14px;color:var(--btn-secondary-border);display:block;line-height:1}
  .cs-hero-visual{height:220px}
  .cs-section-heading{font-size:20px}
  .cs-explore{padding-top:52px;padding-bottom:60px}
  .cs-explore-grid{grid-template-columns:repeat(2,1fr)}
}

/* ── Phone (≤600px) ── */
@media(max-width:600px){
  /* Nav link hide handled by style.css */
  /* Constrain switcher so it doesn't overlap logo or hamburger at narrow widths */
  .cs-nav-switcher-wrap{max-width:calc(100vw - 190px)}
  .cs-nav-switcher{max-width:100%}


  /* Case study hero */
  .cs-hero{padding:24px 0 32px}
  .cs-title{font-size:24px}
  .cs-subtitle{font-size:14px;margin-bottom:24px}
  .cs-meta-item{padding:10px 14px}
  .cs-meta-label{font-size:10.5px}
  .cs-meta-value{font-size:13px}

  /* Case study sections */
  .cs-section{padding:36px 0}
  .cs-final-showcase{padding:28px 0 0}
  .cs-section-heading{font-size:19px;margin-bottom:16px}
  .cs-body-text{font-size:14px}

  /* Step images — slightly shorter on phone */
  .cs-step-img-wrap{height:200px}
  .cs-hero-visual{height:180px}

  /* Final design screenshot — reduce height for phone viewport */
  .cs-final-img-wrap{height:300px}

  /* Before/After scroll images */
  .cs-ba-scroll-img{height:220px}

  /* Back link */
  .cs-back{font-size:12px;margin-bottom:24px}

  /* Explore cards */
  .cs-explore{padding-top:40px;padding-bottom:48px}
  .cs-explore-heading{font-size:16px}
  .cs-explore-grid{grid-template-columns:1fr}
  .cs-explore-card{padding:16px}
  .cs-explore-title{font-size:14px}

  /* Callout legend */
  .cs-callout-legend li{font-size:12px}

  /* Takeaway items */
  .cs-takeaway-item{padding:16px}
}

/* ══════════════════════════════════════════
   ANNOTATED LIGHTBOX  (cs-ann-lb)
   ══════════════════════════════════════════ */
.cs-ann-lb{
  display:none;
  position:fixed;inset:0;
  z-index:1100;
  align-items:center;justify-content:center;
  padding:20px;
}
.cs-ann-lb.open{ display:flex; }
.cs-ann-lb-bg{
  position:absolute;inset:0;
  background:rgba(14,12,10,.9);
}
.cs-ann-lb-inner{
  position:relative;z-index:1;
  width:min(1320px,96vw);
  max-height:88vh;
  overflow-y:auto;
  overflow-x:hidden;
  border-radius:10px;
  background:#111;
  -webkit-overflow-scrolling:touch;
}
.cs-ann-lb-close{
  position:fixed;top:16px;right:20px;
  z-index:2;
  width:36px;height:36px;
  background:rgba(30,28,26,.8);
  border:1px solid rgba(255,255,255,.12);
  border-radius:50%;
  color:#E8E4DE;
  font-size:20px;line-height:1;
  display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;
  transition:background 140ms ease;
  backdrop-filter:blur(4px);
}
.cs-ann-lb-close:hover{ background:rgba(60,56,52,.9); }
.cs-ann-lb-img-wrap{
  position:relative;
  width:100%;
  line-height:0;
  font-size:0;
}
.cs-ann-lb-img{
  display:block;
  width:100%;height:auto;
  border-radius:10px;
}
/* Pins inside lightbox */
.cs-ann-lb-pin{
  position:absolute;
  width:28px;height:28px;
  background:var(--accent);
  color:#fff;
  border-radius:50%;
  border:2px solid rgba(255,255,255,.85);
  display:inline-flex;align-items:center;justify-content:center;
  font-family:'Inter',system-ui;
  font-size:12px;font-weight:700;line-height:1;
  letter-spacing:0;
  box-shadow:0 2px 8px rgba(40,35,30,.4);
  transform:translate(-50%,-50%);
  cursor:pointer;user-select:none;
  z-index:4;padding:0;
  transition:transform 140ms ease,box-shadow 140ms ease;
}
.cs-ann-lb-pin:hover,
.cs-ann-lb-pin.lb-active{
  transform:translate(-50%,-50%) scale(1.2);
  box-shadow:0 4px 14px rgba(40,35,30,.5);
}
/* Tooltip (desktop hover in lightbox) */
.cs-ann-lb-tip{
  position:fixed;
  z-index:1200;
  background:#1C1A17;
  color:#F0EDE8;
  border-radius:8px;
  padding:10px 13px;
  pointer-events:none;
  opacity:0;visibility:hidden;
  transform:translateY(-4px);
  transition:opacity 130ms ease,transform 130ms ease,visibility 0s linear 130ms;
  font-family:'Inter',system-ui;
  font-size:12px;line-height:1.5;
  box-shadow:0 4px 16px rgba(0,0,0,.3);
  max-width:260px;
}
.cs-ann-lb-tip.visible{
  opacity:1;visibility:visible;transform:translateY(0);
  transition:opacity 130ms ease,transform 130ms ease;
}
.cs-ann-lb-tip-title{ font-weight:600;font-size:12.5px;color:#F0EDE8;margin-bottom:3px; }
.cs-ann-lb-tip-desc{ color:rgba(240,237,232,.72);font-size:11.5px; }
/* Mobile popover */
.cs-ann-lb-pop{
  position:fixed;
  bottom:20px;
  left:50%;transform:translateX(-50%);
  z-index:1200;
  width:min(380px,calc(100vw - 32px));
  background:#1C1A17;
  color:#F0EDE8;
  border-radius:10px;
  padding:14px 16px 16px;
  box-shadow:0 8px 28px rgba(0,0,0,.4);
  opacity:0;visibility:hidden;
  transform:translateX(-50%) translateY(10px);
  transition:opacity 150ms ease,transform 150ms ease,visibility 0s linear 150ms;
}
.cs-ann-lb-pop.visible{
  opacity:1;visibility:visible;
  transform:translateX(-50%) translateY(0);
  transition:opacity 150ms ease,transform 150ms ease;
}
.cs-ann-lb-pop-hd{
  display:flex;align-items:center;justify-content:space-between;
  margin-bottom:8px;
}
.cs-ann-lb-pop-num{
  font-size:10.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;
  color:rgba(240,237,232,.45);
}
.cs-ann-lb-pop-x{
  width:24px;height:24px;
  background:rgba(255,255,255,.08);
  border:none;border-radius:50%;
  color:#F0EDE8;font-size:16px;
  display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;line-height:1;
  flex-shrink:0;
}
.cs-ann-lb-pop-x:hover{ background:rgba(255,255,255,.16); }
.cs-ann-lb-pop-title{
  font-weight:600;font-size:13px;color:#F0EDE8;
  margin-bottom:4px;line-height:1.4;
}
.cs-ann-lb-pop-desc{
  font-size:12px;color:rgba(240,237,232,.7);
  line-height:1.6;
}