/* ─────────────────────────────────────────────
   Case study (ECHIR) styles
   ───────────────────────────────────────────── */

/* Reading progress bar */
.read-bar {
  position: fixed; top: 0; left: 0; right: 0;
  height: 3px; background: rgba(0,0,0,0.05);
  z-index: 100;
}
.read-bar #read-fill {
  height: 100%;
  background: var(--blue);
  transform-origin: left;
  transform: scaleX(0);
  transition: transform .1s linear;
}

/* Hero */
.case-hero {
  padding: clamp(40px, 5vw, 80px) 0 clamp(48px, 5vw, 80px);
  position: relative;
}
.case-back { margin-bottom: 32px; }
.back-link {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: 2px solid var(--ink);
  padding-bottom: 3px;
}
.back-link:hover { color: var(--blue); border-color: var(--blue); }

.case-hero-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: end;
}
.case-eyebrow {
  display: flex; gap: 6px; flex-wrap: wrap;
  margin-bottom: 24px;
}
.case-title {
  margin: 0;
  font-size: clamp(64px, 12vw, 184px);
  line-height: 0.88;
}
.case-title .italic-soft.hero-sub {
  display: block;
  font-size: clamp(28px, 3.6vw, 56px);
  line-height: 1.05;
  margin-top: 16px;
  max-width: 980px;
}
.case-hero-side {
  position: relative;
  width: 180px; height: 180px;
}
.case-hero-side .sticker { position: relative; right: auto; top: auto; }
@media (max-width: 800px) {
  .case-hero-side { display: none; }
}

.case-meta {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  border-top: 2px solid var(--ink);
  border-left: 2px solid var(--ink);
  margin-top: clamp(48px, 5vw, 72px);
}
.meta-cell {
  border-right: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  padding: 18px 18px;
  background: var(--paper);
  min-height: 110px;
}
.meta-label {
  font-family: var(--f-body);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 12px;
}
.meta-value {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  line-height: 1.15;
}
@media (max-width: 900px) {
  .case-meta { grid-template-columns: repeat(2, 1fr); }
}

/* Cover banner (full-bleed image at top of case) */
.case-cover-banner {
  width: 100%;
  background: var(--ink);
  overflow: hidden;
  border-top: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
}
.cover-banner-img {
  width: 100%;
  max-height: 70vh;
  overflow: hidden;
  position: relative;
}
.cover-banner-img img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* Cover */
.case-cover-section {
  background: var(--paper-2);
  padding-top: clamp(40px, 5vw, 80px);
  padding-bottom: clamp(40px, 5vw, 80px);
}
.case-cover-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) 1fr;
  gap: 48px;
  align-items: start;
}
.case-cover-embed {
  position: relative;
  max-width: 560px;
}
.ig-frame {
  border: 2px solid var(--ink);
  background: var(--paper);
  overflow: hidden;
  position: relative;
}
.ig-frame iframe {
  display: block;
  width: 100%;
  background: var(--paper);
}
.ig-caption {
  display: flex; justify-content: space-between; align-items: center;
  gap: 16px;
  margin-top: 12px;
  font-size: 12px;
}
.ig-link {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: 2px solid var(--ink);
  padding-bottom: 2px;
}
.ig-link:hover { color: var(--blue); border-color: var(--blue); }
.case-cover-side {
  display: flex;
  flex-direction: column;
  gap: 32px;
  padding-top: 28px;
}
.case-cover-side .display-s { letter-spacing: -0.02em; }
@media (max-width: 900px) {
  .case-cover-grid { grid-template-columns: 1fr; }
  .case-cover-embed { max-width: 100%; }
}

/* Body */
.case-body {
  padding-top: clamp(60px, 6vw, 100px);
  padding-bottom: clamp(60px, 6vw, 100px);
}
.case-body-grid {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 80px;
  align-items: start;
}
.case-toc {
  position: sticky; top: 80px;
  align-self: start;
}
.toc-list {
  list-style: none; padding: 0; margin: 16px 0 24px;
  counter-reset: ch;
}
.toc-list li { counter-increment: ch; padding: 6px 0; }
.toc-list a {
  font-family: var(--f-body);
  font-size: 14px;
  color: var(--muted);
  display: flex; align-items: center; gap: 10px;
  transition: color .2s, padding-left .2s;
  position: relative;
}
.toc-list a::before {
  content: counter(ch, decimal-leading-zero);
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 11px;
  color: inherit;
  opacity: 0.55;
}
.toc-list a.active {
  color: var(--ink);
  font-weight: 500;
  padding-left: 6px;
}
.toc-list a.active::before { color: var(--blue); opacity: 1; }
.toc-list a:hover { color: var(--ink); }
.toc-cta { margin-top: 16px; }

@media (max-width: 1000px) {
  .case-body-grid { grid-template-columns: 1fr; gap: 32px; }
  .case-toc { position: static; }
}

.chapter {
  padding-bottom: 80px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 80px;
}
.chapter:last-of-type { border-bottom: none; }
.ch-num-row {
  display: flex; align-items: baseline; gap: 16px;
  margin-bottom: 24px;
}
.ch-num {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(56px, 6vw, 80px);
  line-height: 1;
  color: var(--blue);
  letter-spacing: -0.03em;
}
.ch-label {
  font-family: var(--f-body);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
}
.chapter h2 { margin: 0 0 28px; letter-spacing: -0.025em; }
.chapter h2 .hi-lime { padding: 0 8px; }
.chapter .body {
  font-size: 17px;
  line-height: 1.6;
  margin-bottom: 1.2em;
  max-width: 760px;
  color: var(--ink-2);
}
.big-list {
  list-style: none; padding: 0;
  margin: 32px 0;
}
.big-list li {
  font-family: var(--f-display);
  font-weight: 500;
  font-size: 22px;
  line-height: 1.35;
  letter-spacing: -0.015em;
  padding: 18px 0;
  border-top: 2px solid var(--ink);
  display: flex; align-items: baseline; gap: 16px;
  text-transform: none;
}
.big-list li::before {
  content: '✺';
  font-size: 16px; color: var(--blue);
  flex: 0 0 16px;
}
.big-list li:last-child { border-bottom: 2px solid var(--ink); }
.big-list li b { font-weight: 800; }

/* Approach grid */
.approach-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 32px;
}
.approach-card {
  background: var(--paper-2);
  border: 2px solid var(--ink);
  padding: 28px;
  transition: transform .35s cubic-bezier(.2,.7,.3,1.4);
}
.approach-card.blue { background: var(--blue); color: var(--paper); }
.approach-card.lime { background: var(--lime); color: var(--ink); }
.approach-head {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 24px;
}
.approach-num {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: 16px;
}
.approach-tag { font-size: 10px; }
.approach-card.blue .approach-tag { border-color: var(--lime); color: var(--lime); }
.approach-card.blue .approach-tag.lime { background: var(--lime); color: var(--ink); }
.approach-card h3 { margin: 0 0 14px; letter-spacing: -0.015em; }
.approach-card p {
  font-size: 14px;
  line-height: 1.55;
  margin: 0;
}
.approach-card.blue p { color: rgba(255,255,255,0.85); }
@media (max-width: 700px) {
  .approach-grid { grid-template-columns: 1fr; }
}

/* Pull quote */
.pull-quote {
  position: relative;
  background: var(--ink);
  color: var(--paper);
  padding: 60px;
  margin: 60px -28px;
  border-radius: 0;
}
.quote-mark-big {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: 200px;
  line-height: 0.7;
  color: var(--lime);
  position: absolute; top: 24px; left: 32px;
}
.pull-quote .display-s {
  position: relative; z-index: 2;
  margin: 0;
  padding-left: 100px;
  max-width: 1000px;
  letter-spacing: -0.02em;
}
.pull-quote .display-s .hi-lime { background: var(--lime); color: var(--ink); }
.quote-cite {
  position: relative; z-index: 2;
  font-family: var(--f-body);
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  margin-top: 28px;
  padding-left: 100px;
}
@media (max-width: 800px) {
  .pull-quote { padding: 40px 24px; margin: 40px -16px; }
  .quote-mark-big { font-size: 100px; left: 20px; top: 14px; }
  .pull-quote .display-s, .quote-cite { padding-left: 0; padding-top: 60px; }
}

/* Clip grid */
.clip-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin: 32px 0;
}
.clip-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 2px solid var(--ink);
  border-left: 2px solid var(--ink);
  margin-top: 32px;
}
.cs {
  border-right: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  padding: 24px 20px;
  background: var(--lime);
}
.cs:nth-child(2) { background: var(--paper-2); }
.cs:nth-child(3) { background: var(--blue); color: var(--paper); }
.cs-num {
  display: block;
  font-family: var(--f-display);
  font-weight: 800;
  font-size: 56px;
  line-height: 0.95;
  letter-spacing: -0.04em;
}
.cs-label {
  display: block;
  font-family: var(--f-body);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 10px;
}
@media (max-width: 700px) {
  .clip-grid { grid-template-columns: repeat(2, 1fr); }
  .clip-stats { grid-template-columns: 1fr; }
}

/* Event grid */
.event-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 32px;
}
@media (max-width: 700px) {
  .event-grid { grid-template-columns: 1fr; }
}

/* Results */
.results-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 2px solid var(--ink);
  border-left: 2px solid var(--ink);
  margin-top: 40px;
}
.result-card {
  border-right: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  padding: 32px 24px;
  min-height: 220px;
  display: flex; flex-direction: column; justify-content: space-between;
}
.result-card.blue { background: var(--blue); color: var(--paper); }
.result-card.lime { background: var(--lime); }
.result-card.paper { background: var(--paper); }
.result-card.ink { background: var(--ink); color: var(--paper); }
.result-num {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(48px, 6vw, 80px);
  line-height: 0.95;
  letter-spacing: -0.04em;
}
.result-label {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin-top: 16px;
}
.result-sub {
  font-size: 12px;
  opacity: 0.7;
  margin-top: 4px;
}
@media (max-width: 800px) {
  .results-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Learnings */
.learnings {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}
.learn {
  padding: 28px 24px;
  border-top: 2px solid var(--ink);
  position: relative;
}
.learn-n {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: 16px;
  color: var(--blue);
  margin-bottom: 16px;
}
.learn h3 {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: -0.015em;
  margin: 0 0 14px;
}
.learn p {
  font-size: 14px; line-height: 1.55;
  color: var(--ink-2);
  margin: 0;
}
@media (max-width: 800px) {
  .learnings { grid-template-columns: 1fr; }
}

/* Planning grid (Mutualia) */
.planning {
  display: flex;
  flex-direction: column;
  margin-top: 32px;
  border-top: 2px solid var(--ink);
}
.plan-row {
  display: grid;
  grid-template-columns: 120px 1.5fr 2fr;
  gap: 20px;
  align-items: center;
  padding: 18px 0;
  border-bottom: 2px solid var(--ink);
  transition: background .2s ease;
}
.plan-row:hover { background: var(--lime); }
.plan-month {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: 22px;
  letter-spacing: -0.01em;
  text-transform: uppercase;
}
.plan-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.plan-content { font-size: 14px; line-height: 1.5; color: var(--ink-2); }
@media (max-width: 900px) {
  .plan-row { grid-template-columns: 80px 1fr; }
  .plan-content { grid-column: 1 / -1; }
}

/* Credits */
.credits {
  padding-top: 40px;
  border-top: 2px solid var(--ink);
}
.credits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.credits-grid > div {
  font-family: var(--f-body);
  font-size: 14px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
}
.credits-grid b {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  display: block;
  margin-bottom: 6px;
}

/* Next case */
.next-case {
  background: var(--ink);
  color: var(--paper);
  padding: clamp(80px, 8vw, 140px) 0;
}
.next-card {
  display: block;
  transition: transform .35s ease;
}
.next-card:hover { transform: translateX(12px); }
.next-card .display-xl {
  font-size: clamp(80px, 14vw, 220px);
  line-height: 0.88;
}
.next-card .display-xl .italic-soft { color: var(--lime); }
.next-meta {
  display: flex; gap: 6px; flex-wrap: wrap;
  margin-top: 28px;
}
.next-meta .pill { border-color: rgba(255,255,255,0.4); color: var(--paper); }
.next-meta .pill.blue { color: var(--paper); border-color: var(--blue); }
.next-meta .pill.lime { color: var(--ink); }

/* CTA copy (reused) */
.cta-section { background: var(--blue); color: var(--paper); position: relative; overflow: hidden; }
.cta-block { position: relative; }
.cta-block .display-xl { font-size: clamp(96px, 16vw, 240px); line-height: 0.86; letter-spacing: -0.045em; margin: 0; }
.cta-foot { display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: end; margin-top: 56px; }
.cta-foot .lead em { color: var(--lime); }
.big-cta { font-size: 18px; padding: 22px 32px; }
@media (max-width: 800px) { .cta-foot { grid-template-columns: 1fr; } }