/* ============ CASE DETAIL PAGE ============ */
.case-detail {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--bg);
  color: var(--fg);
  animation: caseSlideIn 0.5s cubic-bezier(.2,.8,.2,1);
}
@keyframes caseSlideIn {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
.case-detail-scroll {
  position: absolute;
  inset: 0;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--fg-faint) transparent;
}
.case-detail-scroll::-webkit-scrollbar { width: 6px; }
.case-detail-scroll::-webkit-scrollbar-track { background: var(--line-2); }
.case-detail-scroll::-webkit-scrollbar-thumb { background: var(--fg-faint); }

/* Top bar */
.case-detail-top {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 40px;
  background: rgba(10, 10, 11, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.case-back, .case-close {
  background: none;
  border: none;
  color: var(--fg);
  cursor: pointer;
  font: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
  padding: 8px 12px;
  margin: -8px -12px;
  transition: opacity 0.2s;
}
.case-back:hover, .case-close:hover { opacity: 0.6; }
.case-close {
  font-size: 28px;
  line-height: 1;
  letter-spacing: 0;
  font-weight: 300;
}
.case-detail-counter { color: var(--fg-dim); }

/* Hero */
.case-hero {
  padding: 120px 40px 80px;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.case-hero-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--fg-dim);
  flex-wrap: wrap;
}
.case-hero-title {
  font-size: clamp(40px, 6vw, 96px);
  line-height: 0.92;
  letter-spacing: -0.035em;
  font-weight: 500;
  text-wrap: balance;
}
.case-hero-title em {
  font-style: italic;
}
.case-hero-intro {
  font-size: clamp(20px, 2.2vw, 28px);
  line-height: 1.4;
  color: var(--fg-dim);
  max-width: 60ch;
  text-wrap: pretty;
  margin-top: 16px;
}
.case-hero-tags { margin-top: 24px; }

/* Spec strip */
.case-spec {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 0 40px;
  background: var(--bg-2);
}
.case-spec-row {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
}
.spec {
  background: var(--bg-2);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.spec-label {
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--fg-faint);
}
.spec-value {
  font-size: 15px;
  line-height: 1.4;
  font-weight: 400;
  color: var(--fg);
}

/* Hero image */
.case-hero-img {
  max-width: 1400px;
  margin: 80px auto;
  padding: 0 40px;
}
.case-hero-img img {
  width: 100%;
  height: auto;
  aspect-ratio: 16/9;
  object-fit: cover;
  border: 1px solid var(--line);
  background: var(--bg-2);
}

/* Body sections */
.case-body {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px 80px;
  display: flex;
  flex-direction: column;
  gap: 100px;
}
.cs-eyebrow {
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--fg-dim);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.cs-context {
  max-width: 800px;
}
.cs-title {
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1.0;
  letter-spacing: -0.03em;
  font-weight: 500;
  margin-bottom: 32px;
  text-wrap: balance;
}
.cs-body {
  font-size: 18px;
  line-height: 1.6;
  color: var(--fg-dim);
  text-wrap: pretty;
  max-width: 65ch;
}

.cs-image { margin: 0; }
.cs-image-wrap {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--bg-2);
  overflow: hidden;
}
.cs-image-wrap img {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 16/9;
  object-fit: cover;
}
.cs-image figcaption {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-dim);
  margin-top: 16px;
}

.cs-twocol {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
}

.cs-quote {
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--fg);
  max-width: 22ch;
  margin: 40px auto;
  text-align: center;
  padding: 60px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  text-wrap: balance;
}
.cs-quote-mark {
  font-size: 1.5em;
  line-height: 0;
  vertical-align: -0.2em;
  margin: 0 0.1em;
}

.cs-list-section { max-width: 800px; }
.cs-list {
  list-style: none;
  display: flex;
  flex-direction: column;
}
.cs-list li {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
  font-size: 18px;
  line-height: 1.5;
}
.cs-list li:first-child { border-top: 1px solid var(--line); }
.cs-list-num {
  font-size: 11px;
  letter-spacing: 0.18em;
  padding-top: 6px;
}

/* Next case */
.case-next {
  max-width: 1200px;
  margin: 60px auto;
  padding: 80px 40px;
  border: 1px solid var(--line);
  cursor: pointer;
  transition: background 0.4s, border-color 0.4s;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.case-next:hover {
  background: var(--bg-2);
  border-color: var(--accent);
}
.case-next-label {
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--fg-dim);
}
.case-next-title {
  font-size: clamp(32px, 4.5vw, 56px);
  line-height: 1.0;
  letter-spacing: -0.03em;
  font-weight: 500;
  transition: color 0.3s;
}
.case-next:hover .case-next-title { color: var(--accent); }
.case-next-meta {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-dim);
  display: flex;
  gap: 8px;
}

.case-detail-footer {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 40px 60px;
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--fg-faint);
  border-top: 1px solid var(--line);
}

@media (max-width: 900px) {
  .case-detail-top { padding: 16px 24px; }
  .case-hero { padding: 60px 24px 40px; gap: 20px; }
  .case-spec { padding: 0 24px; }
  .case-spec-row { grid-template-columns: 1fr 1fr; }
  .case-hero-img { padding: 0 24px; margin: 40px auto; }
  .case-body { padding: 0 24px 40px; gap: 60px; }
  .cs-twocol { grid-template-columns: 1fr; gap: 40px; }
  .case-next { margin: 40px 24px; padding: 40px 24px; }
  .case-detail-footer { padding: 24px; flex-direction: column; gap: 8px; }
}