/* ======================================
   CASE STUDY DETAIL — Single project page
   Editorial, warm-neutral monochrome, Switzer.
   Reuses tokens + cs-* helpers from style.css
   and case-studies.css. Weight cap 600.
   ====================================== */

.csd-wrap {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 5%;
}

/* ---- HERO ---- */
.csd-hero {
  padding: clamp(130px, 17vw, 200px) 0 0;
}
.csd-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-mute);
  text-decoration: none;
  margin-bottom: clamp(36px, 5vw, 56px);
  transition: color 0.3s ease;
}
.csd-back:hover { color: var(--text); }
.csd-back svg {
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}
.csd-back:hover svg { transform: translateX(-4px); }

.csd-hero .section-eyebrow { margin-bottom: 18px; }
.csd-title {
  font-size: clamp(46px, 7vw, 96px);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1;
  margin: 0 0 24px;
}
.csd-sub {
  font-size: clamp(17px, 2vw, 21px);
  color: var(--text-dim);
  line-height: 1.6;
  max-width: 620px;
  margin: 0 0 36px;
}
.csd-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(44px, 5vw, 64px);
}

/* Meta row — facts about the engagement */
.csd-meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px 40px;
  padding: 32px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

/* ---- HERO IMAGE ---- */
.csd-image {
  margin: clamp(48px, 6vw, 80px) 0 0;
}
.csd-image-frame {
  border-radius: 16px;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--bg-elev);
  box-shadow: var(--glass-shadow);
}
.csd-image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
  transition: transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}
.csd-image-frame:hover img { transform: scale(1.025); }

/* ---- CONTENT BLOCK (two-column: sticky label / body) ---- */
.csd-block {
  padding: clamp(72px, 9vw, 130px) 0;
}
.csd-block + .csd-block { padding-top: 0; }
.csd-block-grid {
  display: grid;
  grid-template-columns: 0.42fr 1fr;
  gap: clamp(32px, 6vw, 96px);
  align-items: start;
}
.csd-block-label {
  position: sticky;
  top: 110px;
}
.csd-block-label .cs-feature-tag { margin-bottom: 0; }
.csd-block-lede {
  font-size: clamp(21px, 2.6vw, 30px);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.3;
  color: var(--text);
  margin: 0;
  max-width: 720px;
}

/* Numbered steps / outcome list */
.csd-steps {
  display: grid;
  gap: clamp(28px, 3vw, 40px);
  margin: 0;
  padding: 0;
  list-style: none;
}
.csd-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 20px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}
.csd-step-num {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-mute);
  letter-spacing: 0.02em;
  padding-top: 4px;
}
.csd-step-body h3 {
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin: 0 0 8px;
}
.csd-step-body p {
  font-size: 16px;
  color: var(--text-dim);
  line-height: 1.6;
  margin: 0;
  max-width: 560px;
}

/* Tools note under the approach */
.csd-tools {
  margin-top: clamp(32px, 4vw, 48px);
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 16px;
}
.csd-tools-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-mute);
}
.csd-tools-list {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
}

/* ---- LIVE SITE STRIP ---- */
.csd-live {
  padding: clamp(40px, 5vw, 64px) 0 clamp(72px, 9vw, 120px);
}
.csd-live-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: clamp(32px, 4vw, 48px);
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--bg-card);
}
.csd-live-text h2 {
  font-size: clamp(22px, 2.6vw, 32px);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin: 0 0 6px;
}
.csd-live-text p {
  font-size: 15px;
  color: var(--text-mute);
  margin: 0;
}

/* ---- RESPONSIVE ---- */
@media (max-width: 900px) {
  .csd-meta { grid-template-columns: repeat(2, 1fr); }
  .csd-block-grid { grid-template-columns: 1fr; gap: 32px; }
  .csd-block-label { position: static; }
}
@media (max-width: 768px) {
  .csd-wrap { padding: 0 24px; }
  .csd-image-frame { aspect-ratio: 4 / 3; }
}
@media (max-width: 480px) {
  .csd-meta { grid-template-columns: 1fr 1fr; gap: 22px 24px; }
  .csd-live-inner { flex-direction: column; align-items: flex-start; }
}