/* ═══════════════════════════════════════════════════════════════════════
   CASE STUDIES LISTING PAGE
   Scoped to .is-case-studies-page — loaded via template-case-studies.php
   Depends on main.css variables: --fire, --ink, --chalk, --ff-head,
   --ff-body, --w, --r4, .wrap, .eyebrow, .btn-ink, .reveal
═══════════════════════════════════════════════════════════════════════ */

/* ── Layout utility ──────────────────────────────────────────────────── */
.is-case-studies-page .wrap {
  width: var(--w);
  margin: 0 auto;
}

/* ════════════════════════════════════════════════════════════════════════
   HERO SECTION
════════════════════════════════════════════════════════════════════════ */
.is-case-studies-page .cs-hero {
  background: var(--ink);
  padding: clamp(72px, 9vw, 108px) 0 clamp(56px, 7vw, 84px);
  position: relative;
  overflow: hidden;
  text-align: center;
}

.is-case-studies-page .cs-hero::before {
  content: 'RESULTS';
  position: absolute;
  font-family: var(--ff-head);
  font-size: clamp(100px, 18vw, 240px);
  font-weight: 900;
  color: transparent;
  -webkit-text-stroke: 2px rgba(255, 255, 255, 0.025);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  white-space: nowrap;
  letter-spacing: -0.06em;
  line-height: 1;
  user-select: none;
}

.is-case-studies-page .cs-hero .nb-breadcrumb {
  position: relative;
  z-index: 2;
  margin-bottom: 28px;
}

.is-case-studies-page .cs-hero-inner {
  position: relative;
  z-index: 1;
}

.is-case-studies-page .cs-hero .eyebrow {
  display: inline-block;
  background: rgba(240, 98, 12, 0.12);
  color: var(--fire);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 7px 18px;
  border-radius: 99px;
  border: 1px solid rgba(240, 98, 12, 0.22);
  margin-bottom: 24px;
}

.is-case-studies-page .cs-hero-h1 {
  font-family: var(--ff-head);
  font-size: clamp(2.4rem, 5.5vw, 4.2rem);
  font-weight: 900;
  color: #fff;
  line-height: 1.07;
  letter-spacing: -0.038em;
  margin: 0 auto 22px;
  max-width: 680px;
}

.is-case-studies-page .cs-hero-h1 em {
  color: var(--fire);
  font-style: italic;
  font-weight: 300;
}

.is-case-studies-page .cs-hero-sub {
  font-family: var(--ff-body);
  font-size: clamp(0.95rem, 1.6vw, 1.05rem);
  color: rgba(255, 255, 255, 0.48);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.72;
}

/* ════════════════════════════════════════════════════════════════════════
   FILTER BAR
════════════════════════════════════════════════════════════════════════ */
.is-case-studies-page .cs-grid-section {
  background: var(--chalk);
  padding: clamp(56px, 7vw, 88px) 0;
}

.is-case-studies-page .cs-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 48px;
  justify-content: center;
}

.is-case-studies-page .cs-filter-btn {
  font-family: var(--ff-body);
  font-size: 0.825rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 8px 20px;
  border-radius: 99px;
  border: 1.5px solid rgba(26, 22, 18, 0.18);
  background: #fff;
  color: var(--ink);
  cursor: pointer;
  transition: background 0.18s, border-color 0.18s, color 0.18s, transform 0.14s;
  line-height: 1.3;
}

.is-case-studies-page .cs-filter-btn:hover {
  border-color: var(--fire);
  color: var(--fire);
  transform: translateY(-1px);
}

.is-case-studies-page .cs-filter-btn.active {
  background: var(--fire);
  border-color: var(--fire);
  color: #fff;
}

/* ════════════════════════════════════════════════════════════════════════
   CARDS GRID
════════════════════════════════════════════════════════════════════════ */
.is-case-studies-page .cs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

@media (max-width: 1024px) {
  .is-case-studies-page .cs-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .is-case-studies-page .cs-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

/* ── Single card ─────────────────────────────────────────────────────── */
.is-case-studies-page .cs-card {
  border-radius: 12px;
  background: #fff;
  border: 1.5px solid rgba(26, 22, 18, 0.09);
  transition: box-shadow 0.22s, transform 0.22s, border-color 0.22s;
  overflow: hidden;
}

.is-case-studies-page .cs-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(26, 22, 18, 0.1);
  border-color: rgba(240, 98, 12, 0.22);
}

.is-case-studies-page .cs-card--featured {
  border-color: var(--fire);
  box-shadow: 0 4px 20px rgba(240, 98, 12, 0.1);
  position: relative;
}

.is-case-studies-page .cs-card--featured::before {
  content: 'Featured';
  position: absolute;
  top: 14px;
  right: 14px;
  background: var(--fire);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 99px;
  z-index: 1;
}

.is-case-studies-page .cs-card-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 28px;
  text-decoration: none;
  color: inherit;
}

/* Card header: logo + tags */
.is-case-studies-page .cs-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
}

.is-case-studies-page .cs-card-logo {
  max-width: 120px;
  max-height: 40px;
  object-fit: contain;
  object-position: left center;
  flex-shrink: 0;
}

.is-case-studies-page .cs-card-logo-placeholder {
  font-family: var(--ff-head);
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.2;
  max-width: 160px;
}

.is-case-studies-page .cs-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: flex-end;
}

/* Tags (shared with single template) */
.cs-tag {
  display: inline-block;
  font-family: var(--ff-body);
  font-size: 0.63rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 99px;
}

.cs-tag--industry {
  background: rgba(26, 22, 18, 0.07);
  color: var(--ink);
}

.cs-tag--service {
  background: rgba(240, 98, 12, 0.1);
  color: var(--fire);
}

.cs-tag--location {
  background: rgba(26, 22, 18, 0.05);
  color: rgba(26, 22, 18, 0.6);
}

/* Card title */
.is-case-studies-page .cs-card-title {
  font-family: var(--ff-head);
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  font-weight: 700;
  color: var(--ink);
  line-height: 1.38;
  letter-spacing: -0.01em;
  margin: 0 0 10px;
  flex-grow: 1;
}

/* Card location */
.is-case-studies-page .cs-card-location {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.78rem;
  color: rgba(26, 22, 18, 0.45);
  margin: 0 0 16px;
  font-family: var(--ff-body);
}

/* Card metrics */
.is-case-studies-page .cs-card-metrics {
  display: flex;
  gap: 0;
  border-top: 1px solid rgba(26, 22, 18, 0.08);
  padding-top: 16px;
  margin-top: 4px;
  margin-bottom: 18px;
}

.is-case-studies-page .cs-metric {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding-right: 12px;
  border-right: 1px solid rgba(26, 22, 18, 0.08);
}

.is-case-studies-page .cs-metric:last-child {
  border-right: none;
  padding-right: 0;
  padding-left: 12px;
}

.is-case-studies-page .cs-metric:only-child {
  padding-left: 0;
}

.is-case-studies-page .cs-metric + .cs-metric {
  padding-left: 12px;
}

.is-case-studies-page .cs-metric strong {
  font-family: var(--ff-head);
  font-size: clamp(1.1rem, 1.8vw, 1.35rem);
  font-weight: 900;
  color: var(--fire);
  line-height: 1;
  letter-spacing: -0.02em;
}

.is-case-studies-page .cs-metric span {
  font-family: var(--ff-body);
  font-size: 0.67rem;
  color: rgba(26, 22, 18, 0.5);
  line-height: 1.3;
  font-weight: 500;
}

/* Card CTA link */
.is-case-studies-page .cs-card-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--ff-body);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.01em;
  margin-top: auto;
  padding-top: 4px;
  transition: color 0.18s, gap 0.18s;
}

.is-case-studies-page .cs-card:hover .cs-card-cta {
  color: var(--fire);
  gap: 10px;
}

/* Empty state */
.is-case-studies-page .cs-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 64px 0;
  font-family: var(--ff-body);
  color: rgba(26, 22, 18, 0.4);
  font-size: 1rem;
}

/* ════════════════════════════════════════════════════════════════════════
   CTA SECTION
════════════════════════════════════════════════════════════════════════ */
.is-case-studies-page .cs-cta-section,
.is-case-study-page .cs-cta-section {
  background: var(--ink);
  padding: clamp(64px, 8vw, 96px) 0;
  text-align: center;
}

.is-case-studies-page .cs-cta-inner,
.is-case-study-page .cs-cta-inner {
  max-width: 620px;
  margin: 0 auto;
}

.is-case-studies-page .cs-cta-h2,
.is-case-study-page .cs-cta-h2 {
  font-family: var(--ff-head);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 900;
  color: #fff;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin: 0 0 16px;
}

.is-case-studies-page .cs-cta-sub,
.is-case-study-page .cs-cta-sub {
  font-family: var(--ff-body);
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.48);
  line-height: 1.72;
  margin: 0 0 32px;
}

/* ════════════════════════════════════════════════════════════════════════
   BREADCRUMB OVERRIDES IN DARK HERO
════════════════════════════════════════════════════════════════════════ */
.is-case-studies-page .cs-hero .nb-breadcrumb,
.is-case-study-page .css-hero .nb-breadcrumb {
  color: rgba(255, 255, 255, 0.38);
  font-size: 0.78rem;
}

.is-case-studies-page .cs-hero .nb-breadcrumb a,
.is-case-study-page .css-hero .nb-breadcrumb a {
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
}

.is-case-studies-page .cs-hero .nb-breadcrumb a:hover,
.is-case-study-page .css-hero .nb-breadcrumb a:hover {
  color: var(--fire);
}

.is-case-studies-page .cs-hero .nb-current,
.is-case-study-page .css-hero .nb-current {
  color: rgba(255, 255, 255, 0.55);
}

/* ════════════════════════════════════════════════════════════════════════
   RESPONSIVE
════════════════════════════════════════════════════════════════════════ */
@media (max-width: 768px) {
  .is-case-studies-page .cs-filter-bar {
    gap: 6px;
  }

  .is-case-studies-page .cs-filter-btn {
    font-size: 0.78rem;
    padding: 7px 14px;
  }

  .is-case-studies-page .cs-card-inner {
    padding: 22px 20px;
  }

  .is-case-studies-page .cs-card-header {
    flex-direction: column;
    gap: 10px;
  }

  .is-case-studies-page .cs-card-tags {
    justify-content: flex-start;
  }
}

@media (max-width: 480px) {
  .is-case-studies-page .cs-card-metrics {
    flex-wrap: wrap;
    gap: 12px;
  }

  .is-case-studies-page .cs-metric {
    border-right: none;
    padding: 0;
    min-width: calc(50% - 6px);
  }

  .is-case-studies-page .cs-metric + .cs-metric {
    padding-left: 0;
  }
}