/* ============================================================
   ads.expert: case-study components (hero, metrics, challenges, pillars,
   results, tech strip, testimonial card, "more case studies" carousel,
   related links). Split out of cs.css so the 155 article pages stop
   downloading them. Loaded right after cs.css on case-studies/*,
   services/* and /paid-media-audit only.
   ============================================================ */
/* ===== HERO: Light mode ===== */
.cs-hero {
  background: linear-gradient(160deg, #FFFFFF 55%, #EEF4FF 100%);
  padding: 72px 0 64px;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.cs-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 80% 20%, rgba(30,99,204,0.06) 0%, transparent 55%),
    radial-gradient(circle at 10% 90%, rgba(66,200,210,0.05) 0%, transparent 50%);
  pointer-events: none;
}

.cs-hero__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  position: relative;
}
.cs-hero__tags {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
/* Hero badge / pill — canonical style (matches .badge / .lp-hero__badge / .ins-pill). */
.cs-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
  text-transform: none;
  color: var(--blue);
  background: rgba(30, 99, 204, 0.07);
  border: 1px solid rgba(30, 99, 204, 0.16);
  padding: 9px 18px;
  border-radius: 100px;
}
.cs-tag-sub {
  font-size: 12px;
  color: var(--text-sec);
  font-weight: 400;
}

.cs-hero__client { margin-bottom: 28px; }
.cs-hero__client-logo {
  height: 36px;   /* default for future case studies — override per logo if needed */
  width: auto;
  mix-blend-mode: multiply;
}

.cs-hero__inner {
  text-align: center;
}
.cs-hero__tags {
  justify-content: center;
}
.cs-hero__client {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.cs-hero__headline {
  font-size: clamp(28px, 3.4vw, 44px);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 20px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}
.cs-hero__headline .g {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.cs-hero__desc {
  font-size: 17px;
  font-weight: 400;
  color: var(--text-sec);
  max-width: 720px;
  line-height: 1.7;
  margin: 0 auto;
}

/* ===== METRICS BAR: dark band, gradient numbers ===== */
.cs-metrics-bar { background: var(--black); }
.cs-metrics-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  display: grid;
  grid-template-columns: repeat(3,1fr);
}
.cs-metric {
  padding: 24px 18px;
  border-right: 1px solid rgba(255,255,255,0.08);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 5px;
}
.cs-metric:first-child { border-left: 1px solid rgba(255,255,255,0.08); }
.cs-metric__num {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
  background: var(--gradient-on-dark);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.cs-metric__label {
  font-size: 11px;
  font-weight: 400;
  color: rgba(255,255,255,0.80);
  line-height: 1.4;
}/* ===== SNAPSHOT ===== */

/* ===== SECTIONS ===== */
.cs-section { padding: 56px 0; border-bottom: 1px solid var(--border); }
.cs-section--subtle { background: var(--bg-subtle); }
.cs-eyebrow--light { color: #fff; }
.cs-eyebrow--light::before { background: var(--gradient); }

/* Goal card */
.cs-goal-card {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-left: 3px solid var(--blue);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  padding: 18px 22px;
  margin-top: 24px;
}
.cs-goal-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 6px;
  display: block;
}
.cs-goal-text {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.6;
  margin: 0;
}

/* Challenges — 2x2 grid, matches pillar layout */
.cs-challenges { display: grid; grid-template-columns: repeat(2,1fr); gap: 12px; margin-top: 28px; }
.cs-challenge {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 22px;
}
.cs-challenge__num {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  flex-shrink: 0;
  margin-top: 3px;
  min-width: 22px;
}
.cs-challenge__title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}
.cs-challenge__desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-sec);
  margin: 0;
}

/* Pillars */
.cs-pillars {
  display: grid;
  grid-template-columns: repeat(2,1fr);
  gap: 12px;
  margin-top: 28px;
}
.cs-pillar {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 22px;
}
.cs-pillar__num {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 8px;
  display: block;
}
.cs-pillar__title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}
.cs-pillar__desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-sec);
  margin: 0;
}

/* Tech strip */
.cs-tech-strip {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
  background: var(--bg-subtle);
}
.cs-tech-strip__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}
.cs-tech-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  white-space: nowrap;
  margin-right: 4px;
}
.cs-pill {
  font-size: 11px;
  font-weight: 600;
  color: var(--blue);
  background: rgba(30,99,204,0.06);
  border: 1px solid rgba(30,99,204,0.15);
  padding: 5px 12px;
  border-radius: var(--r-full);
  white-space: nowrap;
}
.cs-pill--logo {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text);
  background: var(--white);
  border: 1px solid var(--border);
}/* Wide challenge (5th item spanning 2 cols) */

/* Channel sub-headers inside results section */
.cs-channel-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
  margin-top: 8px;
}
.cs-channel-badge {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: #fff;
  background: var(--gradient);
  padding: 4px 10px;
  border-radius: 4px;
  white-space: nowrap;
}
.cs-channel-rule {
  flex: 1;
  height: 1px;
  background: rgba(255,255,255,0.08);
}

/* 3-col results grid (LinkedIn outbound row) */
.cs-results-grid-bot {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 10px;
}

/* ===== RESULTS: dark band, ads.expert brand ===== */
.cs-results {
  background: var(--black);
  padding: 64px 0;
}

.cs-results-grid-top, .cs-results-grid-bot {
  display: grid;
  gap: 10px;
  margin-bottom: 10px;
}
.cs-results-grid-top { grid-template-columns: repeat(4,1fr); }

.cs-r-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--r-md);
  padding: 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.cs-r-num {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
  background: var(--gradient-on-dark);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.cs-r-label { font-size: 11px; color: rgba(255,255,255,0.82); line-height: 1.45; }

.cs-roas-callout {
  background: var(--gradient);
  border-radius: var(--r-md);
  padding: 28px 32px;
  margin-top: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.cs-roas-num {
  font-size: 52px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.04em;
  line-height: 1;
}
.cs-roas-sub {
  font-size: 13px;
  font-weight: 500;
  color: rgba(255,255,255,0.92);
  margin-top: 5px;
  display: block;
}
.cs-roas-desc {
  font-size: 14px;
  font-weight: 400;
  color: rgba(255,255,255,0.85);
  max-width: 340px;
  line-height: 1.65;
  text-align: right;
  margin: 0;
}

/* ===== MORE CASE STUDIES ===== */
.cs-more {
  padding: 80px 0;
  background: var(--white);
  border-top: 1px solid var(--border);
}
.cs-more__header {
  margin-bottom: 36px;
}
.cs-more__headline {
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 0;
}
/* ── carousel ── */
.cs-more__carousel-wrap { overflow: hidden; position: relative; }
.cs-more__track {
  display: flex;
  gap: 20px;
  transition: transform 0.5s cubic-bezier(0.25,0.46,0.45,0.94);
}
.cs-more__track .cs-more-card {
  flex: 0 0 calc(50% - 10px);
  min-width: 0;
}
.cs-more__dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 24px;
}
.cs-more__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  background: var(--border);
  cursor: pointer;
  padding: 0;
  transition: background var(--t), transform var(--t);
}
.cs-more__dot--active {
  background: var(--blue);
  transform: scale(1.25);
}
@media (max-width: 640px) {
  .cs-more__track .cs-more-card { flex: 0 0 calc(100% - 0px); }
}
.cs-more-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  transition: box-shadow var(--t), transform var(--t) var(--ease), border-color var(--t);
  text-decoration: none;
  color: inherit;
}
.cs-more-card:hover {
  box-shadow: 0 8px 32px rgba(0,0,0,0.08);
  transform: translateY(-3px);
  border-color: rgba(0,0,0,0.14);
}
.cs-more-card__top {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.cs-more-card__logo {
  height: 28px;
  width: auto;
  object-fit: contain;
  object-position: left;
  mix-blend-mode: multiply;
}
.cs-more-card__tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.cs-more-card__title {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--text);
}
.cs-more-card__metrics {
  display: flex;
  gap: 24px;
  padding: 16px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.cs-more-card__metric {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.cs-more-card__metric-num {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.03em;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.cs-more-card__metric-label {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
}
.cs-more-card__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  align-self: flex-start;
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  background: var(--gradient);
  border-radius: var(--r-full);
  padding: 10px 20px;
  box-shadow: 0 4px 20px rgba(30,99,204,0.28);
  margin-top: auto;
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease);
}
.cs-more-card:hover .cs-more-card__cta { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(30,99,204,0.38); }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .cs-metrics-inner { grid-template-columns: repeat(3,1fr); }
  .cs-pillars { grid-template-columns: 1fr; }
  .cs-challenges { grid-template-columns: 1fr; }
  .cs-results-grid-top { grid-template-columns: repeat(2,1fr); }
  .cs-results-grid-bot { grid-template-columns: repeat(2,1fr); }
  .cs-roas-callout { flex-direction: column; align-items: flex-start; }
  .cs-roas-desc { text-align: left; max-width: 100%; }
}

@media (max-width: 480px) {
  .cs-metrics-inner { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .cs-metric { padding: 20px 8px; }
  .cs-metric__num { font-size: 21px; }
  .cs-results-grid-top { grid-template-columns: 1fr 1fr; }
  .cs-hero { padding: 52px 0 48px; }
  .cs-section { padding: 44px 0; }
}

/* ===== CASE-STUDY TESTIMONIAL (dark quote card) ===== */
.cs-testimonial { background: #000; padding: 96px 64px; display: flex; justify-content: center; }
.cs-testimonial-card { width: 100%; max-width: 1000px; background: #141414; border: 1px solid rgba(255,255,255,0.08); border-radius: 22px; padding: 54px 64px; }
.tc-top { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 24px; }
.tc-qmark { display: block; }
.tc-eyebrow { display: inline-flex; align-items: center; gap: 8px; margin-top: 8px; font-size: 11px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--cyan); }
.tc-eyebrow::before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: var(--gradient); flex-shrink: 0; }
.tc-quote { font-size: 21px; line-height: 1.62; color: #FFFFFF; font-weight: 400; letter-spacing: -0.006em; text-wrap: pretty; margin: 0; }
/* The global `p` rule sets --text-sec, which beats inheritance from .tc-quote.
   Force inherit so the testimonial body follows the card's white, not body text. */
.tc-quote p { margin: 0; color: inherit; }
.tc-quote p + p { margin-top: 0.85em; }
/* .tc-more is a div wrapper, so `p + p` never reaches its first paragraph and the
   revealed text butted against the paragraph above it. */
.tc-quote .tc-more > p:first-child { margin-top: 0.85em; }
.tc-quote strong { color: #42C8D2; font-weight: 600; }
.tc-quote .tc-more { display: none; }
.cs-testimonial-card.is-open .tc-quote .tc-more { display: block; }
.tc-toggle-wrap { margin-top: 0.85em; }
.cs-testimonial-card.is-open .tc-toggle-wrap { margin-top: 1.05em; }
.tc-toggle { display: inline-flex; align-items: center; gap: 7px; background: none; border: none; padding: 0; cursor: pointer; font-family: inherit; font-size: 14px; font-weight: 600; letter-spacing: -0.005em; color: #42C8D2; }
.tc-toggle svg { transition: transform .22s cubic-bezier(.25,.46,.45,.94); }
.cs-testimonial-card.is-open .tc-toggle svg { transform: rotate(180deg); }
.tc-toggle .tc-toggle-less { display: none; }
.cs-testimonial-card.is-open .tc-toggle .tc-toggle-more { display: none; }
.cs-testimonial-card.is-open .tc-toggle .tc-toggle-less { display: inline; }
.tc-divider { height: 1px; background: rgba(255,255,255,0.10); margin: 34px 0 26px; }
.tc-footer { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.tc-author { display: flex; align-items: center; gap: 16px; }
.tc-avatar { width: 56px; height: 56px; border-radius: 50%; object-fit: cover; flex-shrink: 0; box-shadow: 0 0 0 1px rgba(255,255,255,0.14); }
.tc-name { font-size: 17px; font-weight: 700; color: #fff; letter-spacing: -0.01em; }
.tc-title { margin-top: 2px; font-size: 13.5px; font-weight: 500; color: rgba(255,255,255,0.45); }
.tc-pill { display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; border-radius: 100px; background: rgba(66,200,210,0.10); font-size: 12.5px; font-weight: 600; color: #42C8D2; white-space: nowrap; }
@media (max-width: 640px) { .cs-testimonial { padding: 64px 20px; } .cs-testimonial-card { padding: 36px 28px; } .tc-quote { font-size: 18px; } .tc-footer { flex-direction: column; align-items: flex-start; gap: 20px; }
}

/* ===== /case-studies HUB GRID ===== */
.cs-cases-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr)); gap: 24px; }