/* Full-screen case study page. Uses tokens from style.css. */
/* ---------- Full-Screen Detail Page ---------- */
.detail-page {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: var(--bg-primary);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  opacity: 0;
  transform: translateX(40px);
  pointer-events: none;
  transition: opacity 0.45s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

.detail-page.detail--active {
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
}

.detail-page-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  width: 100%;
}

/* ---------- Detail Top Bar ---------- */
.detail-topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 16px 40px;
  background: rgba(6, 11, 18, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  flex-shrink: 0;
}

/* Back Button */
.detail-back-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.85rem;
  padding: 8px 16px;
  border-radius: 8px;
  cursor: pointer;
  transition: all var(--transition-base);
  flex-shrink: 0;
}

.detail-back-btn:hover {
  color: var(--text-accent);
  border-color: var(--border-hover);
  background: rgba(94, 204, 198, 0.06);
}

.detail-back-btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* ---------- Breadcrumbs ---------- */
.detail-breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  min-width: 0;
}

.breadcrumb-item {
  display: inline-flex;
  align-items: center;
  gap: 0;
  min-width: 0;
}

.breadcrumb-item span,
.breadcrumb-item a {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.breadcrumb-item a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-base);
}

.breadcrumb-item a:hover {
  color: var(--text-accent);
}

.breadcrumb-separator {
  margin: 0 10px;
  color: var(--text-muted);
  opacity: 0.5;
  flex-shrink: 0;
  font-size: 0.7rem;
}

.breadcrumb-current {
  color: var(--text-accent);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 300px;
}

/* ---------- Content area ---------- */
.detail-content {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 72px var(--content-padding) 96px;
}

.cs {
  max-width: 1160px;
  margin: 0 auto;
}

/* ---------- Header ---------- */
.cs-kicker {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-accent);
}

.cs-title {
  margin-top: 14px;
  font-family: var(--font-heading);
  font-size: clamp(2.6rem, 6.5vw, 5rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
}

.cs-lead {
  margin-top: 24px;
  max-width: 760px;
  font-size: clamp(1.08rem, 1.8vw, 1.3rem);
  line-height: 1.55;
  color: var(--text-secondary);
}

.cs-meta {
  display: grid;
  grid-template-columns: minmax(120px, 0.6fr) minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 32px;
  margin-top: 48px;
  padding-top: 22px;
  border-top: 1px solid var(--border-hover);
}

.cs-meta dt {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.cs-meta dd {
  font-size: 0.95rem;
  color: var(--text-primary);
  line-height: 1.55;
}

.cs-meta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
}

.cs-meta-links a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-hover);
}

.cs-meta-links a:hover {
  color: var(--text-accent);
  border-color: var(--text-accent);
}

.cs-meta-links .inline-icon svg {
  width: 12px;
  height: 12px;
}

/* ---------- Key numbers ---------- */
.cs-highlights {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 56px;
}

.cs-highlight {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 4px 28px;
  border-left: 1px solid var(--border-hover);
}

.cs-highlight:first-child {
  padding-left: 0;
  border-left: 0;
}

.cs-highlight dd {
  order: -1;
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 4.6vw, 3.4rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.03em;
}

.cs-highlight dt {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* ---------- Media stage ---------- */
/* The frame takes the media's own aspect ratio (--ar, set by main.js), capped by the
   stage height, so phone recordings, squares and landscape clips are never cropped. */
.cs-stage {
  --stage-h: min(72vh, 680px);
  margin-top: 64px;
}

.cs-stage-screen {
  --ar: 1.7778;
  position: relative;
  width: min(100%, calc(var(--stage-h) * var(--ar)));
  aspect-ratio: var(--ar);
  margin: 0 auto;
  border-radius: 18px;
  overflow: hidden;
  background: #000;
  border: 1px solid var(--border-subtle);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.cs-stage-screen.sized {
  opacity: 1;
}

.cs-stage-screen video,
.cs-stage-screen img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.cs-stage-caption {
  margin-top: 14px;
  text-align: center;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.cs-thumbs {
  display: flex;
  justify-content: safe center;
  gap: 12px;
  margin-top: 22px;
  overflow-x: auto;
  padding: 4px 4px 8px;
  scrollbar-width: thin;
}

.cs-thumb {
  flex: 0 0 150px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 0;
  border: 0;
  background: none;
  text-align: left;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 0.78rem;
  line-height: 1.35;
}

.cs-thumb video,
.cs-thumb img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: contain;
  border-radius: 10px;
  background: #000;
  border: 1px solid var(--border-subtle);
  opacity: 0.55;
  transition: opacity var(--transition-base), border-color var(--transition-base);
}

.cs-thumb:hover video,
.cs-thumb:hover img {
  opacity: 0.85;
}

.cs-thumb.active {
  color: var(--text-primary);
}

.cs-thumb.active video,
.cs-thumb.active img {
  opacity: 1;
  border-color: var(--text-accent);
}

/* Focus ring on the preview only, not around the caption. */
.cs-thumb:focus-visible {
  outline: none;
}

.cs-thumb:focus-visible video,
.cs-thumb:focus-visible img {
  outline: 2px solid var(--text-accent);
  outline-offset: 3px;
}

/* ---------- Sections ---------- */
.cs-section {
  display: grid;
  grid-template-columns: minmax(200px, 1fr) minmax(0, 2.4fr);
  gap: 48px;
  margin-top: 72px;
  padding-top: 26px;
  border-top: 1px solid var(--border-subtle);
}

.cs-section-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 600;
  line-height: 1.3;
}

.cs-section-body {
  max-width: 720px;
}

.cs-text {
  font-size: 1.02rem;
  line-height: 1.75;
  color: var(--text-secondary);
}

.cs-list {
  display: flex;
  flex-direction: column;
}

.cs-list li {
  padding: 14px 0;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

.cs-list li:first-child {
  padding-top: 0;
}

.cs-list li:last-child {
  border-bottom: 0;
}

.text-block-spacer {
  display: block;
  height: 14px;
}

/* ---------- Next case study ---------- */
.cs-next {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas: 'label icon' 'title icon' 'sub icon';
  align-items: center;
  width: 100%;
  margin-top: 96px;
  padding: 32px 0 0;
  border: 0;
  border-top: 1px solid var(--border-hover);
  background: none;
  color: var(--text-primary);
  text-align: left;
  cursor: pointer;
}

/* Strip js/sea.js swims a creature through; stays collapsed when the sea is off. */
.cs-signoff {
  height: 150px;
  margin-top: 64px;
  pointer-events: none;
}

.cs-signoff:empty {
  display: none;
}

.cs-signoff canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.cs-signoff:not(:empty) + .cs-next {
  margin-top: 0;
}

.cs-next-label {
  grid-area: label;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.cs-next-title {
  grid-area: title;
  margin-top: 8px;
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4.6vw, 3.4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  transition: color var(--transition-base);
}

.cs-next-sub {
  grid-area: sub;
  margin-top: 6px;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.cs-next .inline-icon {
  grid-area: icon;
  transition: transform var(--transition-base);
}

.cs-next .inline-icon svg {
  width: 36px;
  height: 36px;
  color: var(--text-accent);
}

.cs-next:hover .cs-next-title {
  color: var(--text-accent);
}

.cs-next:hover .inline-icon {
  transform: translateX(6px);
}

/* ---------- Focus, motion, responsive ---------- */
.detail-back-btn:focus-visible,
.cs-next:focus-visible {
  outline: 2px solid var(--text-accent);
  outline-offset: 4px;
}

@supports (height: 100dvh) {
  .detail-page {
    height: 100dvh;
  }
}

@media (max-width: 860px) {
  .cs-meta {
    grid-template-columns: 1fr 1fr;
    gap: 22px;
  }

  .cs-meta-item:nth-child(2) {
    grid-column: 1 / -1;
    order: 3;
  }

  .cs-section {
    grid-template-columns: 1fr;
    gap: 14px;
    margin-top: 52px;
  }
}

@media (max-width: 600px) {
  .detail-topbar {
    padding: 12px max(14px, env(safe-area-inset-right)) 12px max(14px, env(safe-area-inset-left));
  }

  .breadcrumb-item:first-child,
  .breadcrumb-item:first-child + .breadcrumb-separator {
    display: none;
  }

  .breadcrumb-current {
    max-width: min(48vw, 180px);
  }

  .detail-content {
    padding: 40px 16px calc(64px + env(safe-area-inset-bottom));
  }

  .cs-highlights {
    grid-template-columns: 1fr;
    gap: 18px;
    margin-top: 40px;
  }

  .cs-highlight,
  .cs-highlight:first-child {
    padding: 0 0 16px;
    border-left: 0;
    border-bottom: 1px solid var(--border-subtle);
  }

  .cs-stage {
    margin-top: 44px;
  }

  .cs-stage {
    --stage-h: 62vh;
  }

  .cs-stage-screen {
    border-radius: 12px;
  }

  .cs-thumb {
    flex-basis: 132px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .detail-page {
    transform: none;
  }
}