/* ═══════════════════════════════════════════════════════════
   DEAL MAKERS — Case Studies Page Styles
   Builds on top of style.css — do not duplicate base tokens
═══════════════════════════════════════════════════════════ */

/* ══════════════════════════════════════════════════════
   PAGE HERO
══════════════════════════════════════════════════════ */
.cs-page-hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 0 0 80px;
  overflow: hidden;
}
.cs-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center top;
  filter: brightness(0.35) grayscale(1);
  transform: scale(1.04);
  transition: transform 8s ease;
}
.cs-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(0,0,0,0.2) 0%,
    rgba(0,0,0,0.5) 50%,
    rgba(0,0,0,0.82) 100%
  );
}
.cs-hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 72px 72px;
  pointer-events: none;
}
.cs-page-hero .container {
  position: relative;
  z-index: 2;
  width: 100%;
}
.cs-hero-content {
  padding-top: 140px;
  max-width: 680px;
  margin-bottom: 72px;
}
.cs-hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin-bottom: 24px;
}
.cs-hero-eyebrow::before {
  content: '';
  display: block;
  width: 32px; height: 1px;
  background: rgba(255,255,255,0.3);
}
.cs-hero-headline {
  font-family: var(--display);
  font-size: clamp(3rem, 7vw, 5.8rem);
  font-weight: 300;
  line-height: 1.04;
  color: var(--white);
  margin-bottom: 20px;
}
.cs-hero-headline em { font-style: italic; color: rgba(255,255,255,0.65); }
.cs-hero-sub {
  font-size: 15px;
  font-weight: 300;
  color: rgba(255,255,255,0.5);
  max-width: 540px;
  line-height: 1.85;
}

/* ── Jump Index ─────────────────────────────────────── */
.cs-jump-index {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 40px;
}
.cs-jump-item {
  flex: 1;
  text-align: left;
  padding: 20px 32px 20px 0;
  border-right: 1px solid rgba(255,255,255,0.08);
  background: none;
  border-top: none;
  border-bottom: none;
  border-left: none;
  cursor: pointer;
  transition: opacity var(--transition);
}
.cs-jump-item:last-child { border-right: none; padding-right: 0; }
.cs-jump-item:hover { opacity: 0.7; }
.cs-jump-num {
  font-family: var(--display);
  font-size: 0.9rem;
  font-style: italic;
  color: rgba(255,255,255,0.4);
  margin-bottom: 8px;
}
.cs-jump-title {
  font-family: var(--display);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--white);
  margin-bottom: 6px;
  line-height: 1.3;
  transition: color var(--transition);
}
.cs-jump-item:hover .cs-jump-title { color: rgba(255,255,255,0.7); }
.cs-jump-meta {
  font-size: 11px;
  color: rgba(255,255,255,0.28);
  letter-spacing: 0.06em;
}

/* ══════════════════════════════════════════════════════
   CASE STUDY ARTICLES
══════════════════════════════════════════════════════ */
.case-study {
  padding: 110px 0;
  border-bottom: 1px solid var(--grey-10);
}
.cs-odd  { background: var(--cream); }
.cs-even { background: var(--white); }

/* ── Two-column layout ─────────────────────────────── */
.cs-layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 80px;
  align-items: start;
}

/* ── Meta column ────────────────────────────────────── */
.cs-meta { position: sticky; top: 100px; }
.cs-roman {
  font-family: var(--display);
  font-size: 7rem;
  font-weight: 300;
  line-height: 0.85;
  color: rgba(15,15,15,0.06);
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}
.cs-deal-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 5px 14px;
  border: 1px solid var(--ink);
  color: var(--ink);
  border-radius: 2px;
  margin-bottom: 22px;
}
.cs-title {
  font-family: var(--display);
  font-size: clamp(1.7rem, 2.8vw, 2.5rem);
  font-weight: 400;
  line-height: 1.15;
  color: var(--ink);
  margin-bottom: 16px;
}
.cs-title em { font-style: italic; color: var(--grey-60); }
.cs-location {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--grey-40);
  letter-spacing: 0.07em;
  margin-bottom: 32px;
}
.cs-location-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--ink);
  flex-shrink: 0;
}

/* KPIs */
.cs-kpis {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: 32px;
  border-top: 1px solid var(--grey-10);
}
.cs-kpi {
  padding: 14px 0;
  border-bottom: 1px solid var(--grey-10);
}
.cs-kpi-val {
  font-family: var(--display);
  font-size: 1.8rem;
  font-weight: 400;
  color: var(--ink);
  line-height: 1;
  margin-bottom: 4px;
}
.cs-kpi-val sup {
  font-size: 0.85rem;
  vertical-align: super;
  color: var(--grey-40);
}
.cs-kpi-label {
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--grey-40);
}

/* Services tags */
.cs-services { margin-top: 4px; }
.cs-services-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--grey-40);
  margin-bottom: 10px;
}
.cs-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.cs-tag {
  font-size: 11px;
  font-weight: 500;
  padding: 5px 12px;
  background: var(--grey-05);
  color: var(--grey-60);
  border: 1px solid var(--grey-10);
  border-radius: 2px;
  letter-spacing: 0.03em;
}
.cs-even .cs-tag { background: var(--cream); }

/* ── Narrative column ───────────────────────────────── */
.cs-narrative {}
.cs-lead {
  font-family: var(--display);
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  font-weight: 400;
  font-style: italic;
  line-height: 1.65;
  color: var(--ink);
  margin-bottom: 28px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--grey-10);
}
.cs-body {
  font-size: 14.5px;
  font-weight: 300;
  color: var(--grey-60);
  line-height: 1.9;
  margin-bottom: 18px;
}
.cs-body em { font-style: italic; color: var(--ink-70); font-weight: 400; }

/* ── Timeline ───────────────────────────────────────── */
.cs-timeline {
  position: relative;
  padding-left: 36px;
  margin-top: 52px;
  list-style: none;
}
.cs-timeline::before {
  content: '';
  position: absolute;
  top: 10px;
  bottom: 8px;
  left: 6px;
  width: 1px;
  background: linear-gradient(
    to bottom,
    var(--ink) 0%,
    rgba(15,15,15,0.08) 100%
  );
}
.cs-chapter {
  position: relative;
  margin-bottom: 44px;
}
.cs-chapter:last-child { margin-bottom: 0; }
.cs-chapter-marker {
  position: absolute;
  left: -36px;
  top: 5px;
  width: 13px; height: 13px;
  border-radius: 50%;
  border: 2px solid var(--ink);
  background: var(--cream);
  transition: background var(--transition), border-color var(--transition);
  z-index: 1;
}
.cs-even .cs-chapter-marker { background: var(--white); }
.cs-chapter:hover .cs-chapter-marker { background: var(--ink); }
.cs-chapter-inner {}
.cs-chapter-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--grey-40);
  margin-bottom: 8px;
}
.cs-chapter-title {
  font-family: var(--display);
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 10px;
  line-height: 1.3;
}
.cs-chapter-body {
  font-size: 13.5px;
  font-weight: 300;
  color: var(--grey-60);
  line-height: 1.85;
}

/* ── Pull quote ─────────────────────────────────────── */
.cs-quote {
  margin: 52px 0 0;
  padding: 36px 44px;
  border-left: 3px solid var(--ink);
  background: var(--white);
  position: relative;
}
.cs-even .cs-quote { background: var(--grey-05); }
.cs-quote-mark {
  font-family: var(--display);
  font-size: 5rem;
  line-height: 0.7;
  color: var(--grey-10);
  margin-bottom: 8px;
  user-select: none;
}
.cs-quote-text {
  font-family: var(--display);
  font-size: 1.25rem;
  font-style: italic;
  font-weight: 400;
  color: var(--ink);
  line-height: 1.7;
  margin-bottom: 18px;
}
.cs-quote-attr {
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--grey-40);
  font-style: normal;
}

/* ── Outcome card ───────────────────────────────────── */
.cs-outcome {
  margin-top: 56px;
  background: var(--ink);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}
.cs-outcome-copy {
  padding: 48px 44px;
}
.cs-outcome-eyebrow {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.35);
  margin-bottom: 14px;
}
.cs-outcome-headline {
  font-family: var(--display);
  font-size: 1.75rem;
  font-weight: 400;
  color: var(--white);
  line-height: 1.25;
  margin-bottom: 16px;
}
.cs-outcome-body {
  font-size: 13px;
  color: rgba(255,255,255,0.45);
  line-height: 1.8;
  font-weight: 300;
}
.cs-outcome-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: rgba(255,255,255,0.07);
  border-left: 1px solid rgba(255,255,255,0.07);
}
.cs-outcome-stat {
  background: rgba(255,255,255,0.03);
  padding: 28px 24px;
  transition: background var(--transition);
}
.cs-outcome-stat:hover { background: rgba(255,255,255,0.07); }
.cs-stat-val {
  font-family: var(--display);
  font-size: 2rem;
  font-weight: 400;
  color: var(--white);
  line-height: 1;
  margin-bottom: 8px;
}
.cs-stat-label {
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.3);
  line-height: 1.5;
}

/* ══════════════════════════════════════════════════════
   CTA SECTION
══════════════════════════════════════════════════════ */
.cs-cta-section {
  padding: 110px 0;
  background: var(--ink-90);
  position: relative;
  overflow: hidden;
}
.cs-cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 72px 72px;
}
.cs-cta-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
}
.cs-cta-eyebrow {
  display: inline-block;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  margin-bottom: 20px;
}
.cs-cta-headline {
  font-family: var(--display);
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 300;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 20px;
}
.cs-cta-headline em { font-style: italic; color: rgba(255,255,255,0.55); }
.cs-cta-sub {
  font-size: 15px;
  color: rgba(255,255,255,0.4);
  font-weight: 300;
  margin-bottom: 44px;
  line-height: 1.7;
}
.cs-cta-buttons { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn-outline-cs {
  display: inline-block;
  padding: 14px 36px;
  border: 1px solid rgba(255,255,255,0.25);
  color: rgba(255,255,255,0.75);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-radius: var(--radius);
  transition: border-color var(--transition), color var(--transition);
}
.btn-outline-cs:hover { border-color: var(--white); color: var(--white); }
.cs-cta-section .btn-primary { background: var(--white); color: var(--ink); }
.cs-cta-section .btn-primary:hover { background: var(--grey-10); }

/* ══════════════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .cs-layout { grid-template-columns: 280px 1fr; gap: 56px; }
  .cs-meta { position: static; }
}

@media (max-width: 860px) {
  .cs-layout { grid-template-columns: 1fr; gap: 40px; }
  .cs-jump-index { grid-template-columns: 1fr; gap: 0; }
  .cs-jump-item { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.08); padding: 20px 0; }
  .cs-jump-item:last-child { border-bottom: none; }
  .cs-outcome { grid-template-columns: 1fr; }
  .cs-outcome-stats { border-left: none; border-top: 1px solid rgba(255,255,255,0.07); }
  .cs-outcome-copy { padding: 36px 28px; }
  .cs-roman { font-size: 5rem; }
  .case-study { padding: 72px 0; }
}

@media (max-width: 560px) {
  .cs-hero-content { padding-top: 120px; }
  .cs-quote { padding: 28px 24px; }
  .cs-outcome-stats { grid-template-columns: 1fr 1fr; }
  .cs-cta-buttons { flex-direction: column; align-items: center; }
}