/* ============================================================
   ORBAN FOREST — Case Study Page
   Layout inspired by ziffdigital.com/our-work/menova-health
   ============================================================ */

/* ── INVERTED SECTIONS (light mode: white-on-black, dark mode: black-on-white) */
.cs-section--inverted {
  background: #111111;
  color: #f6f6f6;
  border-radius: var(--radius-section);
  margin-left: 1rem;
  margin-right: 1rem;
  padding-left: var(--container-pad);
  padding-right: var(--container-pad);
}
.cs-section--inverted + .cs-section--inverted {
  margin-top: 1.5rem;
}
.cs-section--inverted .cs-section-body h3 {
  color: #f6f6f6;
}
.cs-section--inverted .cs-section-body p,
.cs-section--inverted .cs-section-body ul li {
  color: #999999;
}
.cs-section--inverted .cs-section-label {
  color: var(--accent);
}
.cs-section--inverted .cs-stat {
  background: #1a1a1a;
  border-color: rgba(255, 255, 255, 0.1);
}
.cs-section--inverted .cs-stat-number {
  color: #f6f6f6;
}
.cs-section--inverted .cs-stat-desc {
  color: #999999;
}
.cs-section--inverted .cs-image-single,
.cs-section--inverted .cs-image-pair .cs-image-item,
.cs-section--inverted .cs-image-trio .cs-image-item {
  background: #1a1a1a;
  border-color: rgba(255, 255, 255, 0.1);
}
.cs-section--inverted .cs-placeholder {
  color: #555555;
}
.cs-section--inverted .cs-quote blockquote {
  color: #f6f6f6;
}
.cs-section--inverted .cs-quote cite {
  color: #666666;
}
.cs-section--inverted .cs-quote {
  border-color: rgba(255, 255, 255, 0.1);
}

/* Dark mode: flip inverted sections to black-on-white */
[data-theme="dark"] .cs-section--inverted {
  background: #f6f6f6;
  color: #111111;
}
[data-theme="dark"] .cs-section--inverted .cs-section-body h3 {
  color: #111111;
}
[data-theme="dark"] .cs-section--inverted .cs-section-body p,
[data-theme="dark"] .cs-section--inverted .cs-section-body ul li {
  color: #555555;
}
[data-theme="dark"] .cs-section--inverted .cs-stat {
  background: #ffffff;
  border-color: #e0e0e0;
}
[data-theme="dark"] .cs-section--inverted .cs-stat-number {
  color: #111111;
}
[data-theme="dark"] .cs-section--inverted .cs-stat-desc {
  color: #555555;
}
[data-theme="dark"] .cs-section--inverted .cs-image-single,
[data-theme="dark"] .cs-section--inverted .cs-image-pair .cs-image-item,
[data-theme="dark"] .cs-section--inverted .cs-image-trio .cs-image-item {
  background: #ffffff;
  border-color: #e0e0e0;
}
[data-theme="dark"] .cs-section--inverted .cs-placeholder {
  color: #aaaaaa;
}
[data-theme="dark"] .cs-section--inverted .cs-quote blockquote {
  color: #111111;
}
[data-theme="dark"] .cs-section--inverted .cs-quote cite {
  color: #777777;
}
[data-theme="dark"] .cs-section--inverted .cs-quote {
  border-color: #e0e0e0;
}

@media (max-width: 768px) {
  .cs-section--inverted {
    margin-left: 0.5rem;
    margin-right: 0.5rem;
    border-radius: 16px;
  }
}

/* ── CASE STUDY HERO ──────────────────────────────────────── */
.cs-hero {
  padding: 10rem 0 4rem;
  position: relative;
}
.cs-hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: var(--container-pad);
  right: var(--container-pad);
  height: 1px;
  background: var(--border-dark);
}
.cs-back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-white-muted);
  margin-bottom: 3rem;
  transition: color var(--transition-fast);
}
.cs-back:hover {
  color: var(--accent);
}
.cs-back svg {
  transition: transform var(--transition-fast);
}
.cs-back:hover svg {
  transform: translateX(-4px);
}
.cs-title {
  font-size: clamp(3rem, 6vw, 5.5rem);
  font-weight: 300;
  letter-spacing: -0.035em;
  line-height: 1.05;
  margin-bottom: 2rem;
  max-width: 900px;
}
.cs-intro-text {
  font-size: clamp(1.05rem, 1.4vw, 1.2rem);
  color: var(--text-white-muted);
  line-height: 1.85;
  max-width: 680px;
  margin-bottom: 3rem;
}

/* ── META ROW ──────────────────────────────────────────────── */
.cs-meta {
  display: flex;
  gap: 3.5rem;
  flex-wrap: wrap;
  padding-top: 0.5rem;
}
.cs-meta-item {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.cs-meta-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-white-dim);
}
.cs-meta-value {
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--text-white);
}
.cs-meta-value a {
  color: var(--accent);
  transition: opacity var(--transition-fast);
}
.cs-meta-value a:hover {
  opacity: 0.75;
}
.cs-meta-tags {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}
.cs-meta-tag {
  font-size: 0.78rem;
  font-weight: 400;
  padding: 0.3rem 0.85rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-dark);
  color: var(--text-white-muted);
  transition: all var(--transition-fast);
}
.cs-meta-tag:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ── FULL-BLEED IMAGE ─────────────────────────────────────── */
.cs-hero-image {
  width: 100%;
  margin: 4rem 0;
  border-radius: var(--radius-section);
  overflow: hidden;
  aspect-ratio: 16 / 8;
  background: var(--bg-dark-elevated);
  border: 1px solid var(--border-dark);
  position: relative;
}
.cs-hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.cs-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  color: var(--text-white-dim);
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  position: relative;
  overflow: hidden;
}
.cs-placeholder::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, transparent 40%, var(--accent-glow) 50%, transparent 60%);
  opacity: 0.5;
}
.cs-placeholder svg {
  opacity: 0.25;
  margin-right: 0.5rem;
}

/* ── CONTENT SECTIONS ─────────────────────────────────────── */
.cs-section {
  padding: 5rem 0;
  position: relative;
}
.cs-section + .cs-section {
  border-top: 1px solid var(--border-dark);
}
.cs-section-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 4rem;
  align-items: start;
}
.cs-section-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  padding-top: 0.4rem;
  position: sticky;
  top: 100px;
}
.cs-section-body h3 {
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  font-weight: 300;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 1.5rem;
}
.cs-section-body p {
  font-size: clamp(1rem, 1.2vw, 1.08rem);
  color: var(--text-white-muted);
  line-height: 1.85;
  margin-bottom: 1.5rem;
  max-width: 640px;
}
.cs-section-body ul {
  margin-bottom: 1.5rem;
  padding-left: 0;
}
.cs-section-body ul li {
  font-size: 1rem;
  color: var(--text-white-muted);
  line-height: 1.85;
  padding: 0.4rem 0;
  padding-left: 1.5rem;
  position: relative;
}
.cs-section-body ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.95rem;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

/* ── IMAGE LAYOUTS ────────────────────────────────────────── */
.cs-image-single {
  margin: 2.5rem 0;
  border-radius: var(--radius-card);
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--bg-dark-elevated);
  border: 1px solid var(--border-dark);
}
.cs-image-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin: 2.5rem 0;
}
.cs-image-pair .cs-image-item {
  border-radius: var(--radius-card);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--bg-dark-elevated);
  border: 1px solid var(--border-dark);
}
.cs-image-trio {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 1.5rem;
  margin: 2.5rem 0;
}
.cs-image-trio .cs-image-item:first-child {
  grid-column: 1 / -1;
  aspect-ratio: 16 / 8;
}
.cs-image-trio .cs-image-item {
  border-radius: var(--radius-card);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--bg-dark-elevated);
  border: 1px solid var(--border-dark);
}

/* ── RESULTS STATS ────────────────────────────────────────── */
.cs-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin: 3rem 0 2rem;
}
.cs-stat {
  padding: 2rem;
  border-radius: var(--radius-card);
  border: 1px solid var(--border-dark);
  background: var(--bg-dark-elevated);
  text-align: center;
  transition: all var(--transition-base);
}
.cs-stat:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
}
.cs-stat-number {
  font-size: clamp(2.2rem, 3.5vw, 3rem);
  font-weight: 300;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 0.5rem;
  color: var(--text-white);
}
.cs-stat-number span {
  color: var(--accent);
}
.cs-stat-desc {
  font-size: 0.85rem;
  color: var(--text-white-muted);
  line-height: 1.5;
}

/* ── QUOTE / PULLQUOTE ────────────────────────────────────── */
.cs-quote {
  margin: 3rem 0;
  padding: 2.5rem 0;
  border-top: 1px solid var(--border-dark);
  border-bottom: 1px solid var(--border-dark);
}
.cs-quote blockquote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.3rem, 2vw, 1.7rem);
  line-height: 1.6;
  color: var(--text-white);
  margin-bottom: 1rem;
  position: relative;
  padding-left: 2rem;
}
.cs-quote blockquote::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent);
  border-radius: 2px;
}
.cs-quote cite {
  font-family: var(--font-sans);
  font-style: normal;
  font-size: 0.85rem;
  color: var(--text-white-dim);
  padding-left: 2rem;
}

/* ── TECH STACK PILLS ─────────────────────────────────────── */
.cs-tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.5rem 0;
}
.cs-tech-pill {
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.45rem 1rem;
  border-radius: var(--radius-pill);
  background: var(--accent-glow);
  color: var(--accent);
  border: 1px solid rgba(0, 194, 97, 0.2);
}

/* ── RELATED PROJECTS NAV ─────────────────────────────────── */
.cs-related {
  border-top: 1px solid var(--border-dark);
  padding: 5rem 0;
}
.cs-related-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-white-dim);
  margin-bottom: 2.5rem;
}
.cs-related-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}
.cs-related-card {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  padding: 1.5rem;
  border-radius: var(--radius-card);
  border: 1px solid var(--border-dark);
  transition: all var(--transition-base);
  text-decoration: none;
  color: inherit;
}
.cs-related-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
}
.cs-related-card--next {
  flex-direction: row-reverse;
  text-align: right;
}
.cs-related-thumb {
  width: 100px;
  height: 100px;
  border-radius: 12px;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--bg-dark-elevated);
  border: 1px solid var(--border-dark);
}
.cs-related-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.cs-related-dir {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-white-dim);
  margin-bottom: 0.25rem;
}
.cs-related-name {
  font-size: 1.15rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
  transition: color var(--transition-fast);
}
.cs-related-card:hover .cs-related-name {
  color: var(--accent);
}
.cs-related-type {
  font-size: 0.8rem;
  color: var(--text-white-muted);
}

/* ── FULL-BLEED BREAK IMAGE ───────────────────────────────── */
.cs-break-image {
  margin: 0 calc(var(--container-pad) * -1);
  aspect-ratio: 21 / 9;
  background: var(--bg-dark-elevated);
  border-top: 1px solid var(--border-dark);
  border-bottom: 1px solid var(--border-dark);
  overflow: hidden;
  position: relative;
}

/* ── CTA BANNER ───────────────────────────────────────────── */
.cs-cta {
  padding: 6rem 0;
  text-align: center;
}
.cs-cta-label {
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 1.5rem;
}
.cs-cta h2 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 300;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}
.cs-cta p {
  color: var(--text-white-muted);
  max-width: 480px;
  margin: 0 auto 2.5rem;
  line-height: 1.75;
}

/* ── RESPONSIVE ───────────────────────────────────────────── */
@media (max-width: 1024px) {
  .cs-section-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .cs-section-label {
    position: static;
  }
  .cs-stats {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .cs-hero {
    padding: 7rem 0 3rem;
  }
  .cs-title {
    font-size: clamp(2.2rem, 8vw, 3rem);
  }
  .cs-meta {
    gap: 2rem;
  }
  .cs-hero-image {
    border-radius: 16px;
    margin: 2.5rem 0;
    aspect-ratio: 16 / 10;
  }
  .cs-section {
    padding: 3.5rem 0;
  }
  .cs-image-pair {
    grid-template-columns: 1fr;
  }
  .cs-image-trio .cs-image-item:first-child {
    grid-column: 1;
  }
  .cs-image-trio {
    grid-template-columns: 1fr;
  }
  .cs-stats {
    grid-template-columns: 1fr;
  }
  .cs-related-grid {
    grid-template-columns: 1fr;
  }
  .cs-related-card--next {
    flex-direction: row;
    text-align: left;
  }
  .cs-break-image {
    margin: 0;
    border-radius: 16px;
    aspect-ratio: 16 / 10;
  }
}