/* Case study / project launch page */

.cs-hero {
  position: relative;
  padding-block: clamp(4.5rem, 10vw, 7.5rem) var(--space-8);
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}

.cs-hero__backdrop {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.cs-hero__backdrop img {
  width: 100%;
  height: 120%;
  object-fit: cover;
  opacity: 0.18;
  filter: grayscale(0.2) saturate(0.85);
  transform: scale(1.08);
  will-change: transform;
}

.cs-hero__backdrop::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(9, 9, 11, 0.55), rgba(9, 9, 11, 0.92) 70%, var(--color-bg)),
    radial-gradient(ellipse at 20% 10%, rgba(34, 197, 94, 0.16), transparent 45%);
}

.cs-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: var(--space-7);
  align-items: end;
}

.cs-hero__content {
  display: grid;
  gap: var(--space-4);
  max-width: 44rem;
}

.cs-hero__back {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-muted);
  width: fit-content;
  transition: color var(--duration-fast) var(--ease-out);
}

.cs-hero__back:hover {
  color: var(--color-primary);
}

.cs-hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4.5rem);
  font-weight: var(--fw-black);
  line-height: var(--lh-tight);
  letter-spacing: var(--tracking-tight);
}

.cs-hero__summary {
  color: var(--color-text-muted);
  font-size: var(--fs-md);
  line-height: var(--lh-relaxed);
  max-width: 40rem;
}

.cs-hero__actions,
.cs-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.cs-hero__media {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--color-surface);
  box-shadow: var(--shadow-soft), 0 0 50px rgba(34, 197, 94, 0.08);
}

.cs-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cs-nav {
  position: sticky;
  top: var(--header-height);
  z-index: 40;
  background: rgba(9, 9, 11, 0.82);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(var(--blur-md));
  -webkit-backdrop-filter: blur(var(--blur-md));
}

.cs-nav__inner {
  display: flex;
  gap: var(--space-4);
  overflow-x: auto;
  padding-block: 0.85rem;
  scrollbar-width: none;
}

.cs-nav__inner::-webkit-scrollbar {
  display: none;
}

.cs-nav__link {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-muted);
  transition: color var(--duration-fast) var(--ease-out);
}

.cs-nav__link:hover,
.cs-nav__link.is-active {
  color: var(--color-primary);
}

.cs-nav__link.is-active {
  position: relative;
}

.cs-nav__link.is-active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.55rem;
  height: 2px;
  background: var(--color-primary);
}

.cs-section {
  padding-block: clamp(3.5rem, 7vw, 5.5rem);
  border-bottom: 1px solid var(--color-border);
}

.cs-section--alt {
  background: var(--color-bg-secondary);
}

.cs-section__inner {
  display: grid;
  grid-template-columns: minmax(12rem, 0.7fr) minmax(0, 1.3fr);
  gap: var(--space-7);
  align-items: start;
}

.cs-section__title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: var(--fw-bold);
  line-height: var(--lh-snug);
  margin-top: var(--space-3);
}

.cs-prose {
  font-size: var(--fs-md);
  line-height: var(--lh-relaxed);
  color: var(--color-text-muted);
  max-width: 42rem;
}

.cs-prose--mono {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  letter-spacing: 0.01em;
}

.cs-info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 12rem), 1fr));
  gap: var(--space-4);
}

.cs-info-card {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: rgba(17, 24, 39, 0.45);
}

.cs-info-card__label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-primary);
}

.cs-info-card__value {
  color: var(--color-text);
  line-height: var(--lh-snug);
}

.tag--lg {
  padding: 0.4rem 0.75rem;
  font-size: 0.72rem;
}

.cs-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.cs-gallery__item {
  margin: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface);
  aspect-ratio: 16 / 10;
}

.cs-gallery__item--lead {
  grid-column: 1 / -1;
  aspect-ratio: 21 / 9;
}

.cs-gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.cs-gallery__item:hover img {
  transform: scale(1.03);
}

.cs-video__play {
  position: relative;
  display: grid;
  place-items: center;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md, 0.75rem);
  overflow: hidden;
  background: #0a1018;
  color: var(--color-text);
  cursor: pointer;
}

.cs-video__play img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.55;
}

.cs-video__play span {
  position: relative;
  z-index: 1;
  padding: 0.7rem 1.1rem;
  border-radius: 999px;
  background: rgba(9, 9, 11, 0.72);
  border: 1px solid rgba(34, 197, 94, 0.35);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.cs-video {
  display: grid;
  gap: var(--space-4);
}

.cs-video video {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: #000;
  aspect-ratio: 16 / 9;
}

.cs-video--link {
  place-items: start;
}

.cs-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
  gap: var(--space-4);
}

.cs-metric {
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: rgba(17, 24, 39, 0.5);
}

.cs-metric strong {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.cs-metric span {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.cs-highlights {
  display: grid;
  gap: var(--space-3);
}

.cs-highlights li {
  position: relative;
  padding-left: 1.2rem;
  color: var(--color-text-muted);
  line-height: var(--lh-relaxed);
}

.cs-highlights li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.12);
}

.cs-related {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr));
  gap: var(--space-4);
}

.cs-related__card {
  display: grid;
  gap: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: rgba(17, 24, 39, 0.45);
  transition:
    transform var(--duration-base) var(--ease-out),
    border-color var(--duration-base) var(--ease-out);
}

.cs-related__card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-strong);
}

.cs-related__card img,
.cs-related__placeholder {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background:
    radial-gradient(circle at 30% 30%, rgba(34, 197, 94, 0.18), transparent 50%),
    var(--color-bg-secondary);
}

.cs-related__card > div {
  padding: 0 var(--space-4) var(--space-4);
}

.cs-related__meta {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.cs-related__card h3 {
  font-family: var(--font-display);
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
}

.cs-cta {
  padding-block: clamp(4rem, 8vw, 6rem);
  background:
    radial-gradient(ellipse at 50% 0%, rgba(34, 197, 94, 0.12), transparent 50%),
    var(--color-bg);
}

.cs-cta__inner {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: var(--space-6);
  flex-wrap: wrap;
  padding: var(--space-7);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  background: rgba(17, 24, 39, 0.55);
  box-shadow: var(--shadow-glow);
}

.cs-cta__title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: var(--fw-bold);
  margin: var(--space-3) 0;
}

.cs-cta__text {
  color: var(--color-text-muted);
  max-width: 32rem;
  line-height: var(--lh-relaxed);
}

@media (max-width: 960px) {
  .cs-hero__grid,
  .cs-section__inner,
  .cs-cta__inner {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .cs-hero__media {
    order: -1;
  }

  .cs-gallery {
    grid-template-columns: 1fr;
  }

  .cs-gallery__item--lead {
    aspect-ratio: 16 / 9;
  }
}