/* Mirrors project-detail rhythm and spacing */
.case-hero {
  padding: calc(160px * var(--space-scale)) var(--container-pad)
    calc(80px * var(--space-scale));
  position: relative;
}
.case-hero-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.2;
  mask-image: linear-gradient(to bottom, black 0%, transparent 100%);
}
.case-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
  margin-bottom: 48px;
  position: relative;
  z-index: 2;
  transition: color 0.2s;
}
.case-back:hover {
  color: var(--accent);
}
.case-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 32px;
  position: relative;
  z-index: 2;
}
.case-tag {
  background: var(--accent-dim);
  border: 1px solid rgba(0, 255, 204, 0.2);
  color: var(--accent);
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.05em;
}
.case-title {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 62px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.03em;
  max-width: 900px;
  position: relative;
  z-index: 2;
  margin-bottom: 32px;
}
.case-title em {
  color: var(--accent);
  font-style: italic;
}
.case-intro {
  color: var(--muted-light);
  font-size: 17px;
  font-weight: 300;
  line-height: 1.7;
  max-width: 720px;
  position: relative;
  z-index: 2;
}

.case-overview {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin: calc(60px * var(--space-scale)) var(--container-pad) 0;
}
.case-overview-item {
  padding: 32px 40px;
  border-right: 1px solid var(--border);
}
.case-overview-item:last-child {
  border-right: none;
}
.coi-label {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}
.coi-val {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--white);
}

.case-main-image {
  margin: calc(60px * var(--space-scale)) var(--container-pad);
  border-radius: 16px;
  border: 1px solid var(--border);
  overflow: hidden;
  aspect-ratio: 16/7;
  background: var(--surface);
  position: relative;
}
.case-main-image-inner {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.case-main-image-inner img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.35;
  filter: saturate(0.9) contrast(1.05);
}
.case-img-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.5;
}
.case-img-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at center,
    var(--accent-dim) 0%,
    transparent 60%
  );
}
.case-img-label {
  font-family: var(--font-display);
  font-size: 92px;
  font-weight: 800;
  color: rgba(240, 238, 234, 0.06);
  letter-spacing: -0.04em;
  position: relative;
  z-index: 2;
}
.case-img-note {
  position: absolute;
  bottom: 20px;
  right: 20px;
  background: rgba(8, 8, 8, 0.8);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 12px;
  color: var(--muted);
  backdrop-filter: blur(10px);
  z-index: 2;
}

.case-content {
  padding: 0 var(--container-pad);
}
.case-section {
  max-width: 860px;
  margin: 0 auto 80px;
}
.case-section-label {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.case-section-label::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--accent);
}
.case-section h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 3.3vw, 32px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  line-height: 1.15;
}
.case-section h2 em {
  color: var(--accent);
  font-style: italic;
}
.case-section p {
  color: var(--muted-light);
  font-size: 17px;
  line-height: 1.8;
  font-weight: 300;
  margin-bottom: 20px;
}
.case-section p strong {
  color: var(--white);
  font-weight: 500;
}

.stack-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  margin-top: 36px;
}
.stack-card {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 26px 24px;
}
.stack-card:first-child {
  border-radius: 12px 0 0 12px;
}
.stack-card:last-child {
  border-radius: 0 12px 12px 0;
}
.stack-title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--white);
}
.stack-items {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  margin-top: 24px;
}
.feature-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 20px;
  color: var(--muted-light);
  font-size: 15px;
  font-weight: 300;
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
  margin-top: 40px;
}
.result-card {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 30px 24px;
}
.result-card:first-child {
  border-radius: 12px 0 0 12px;
}
.result-card:last-child {
  border-radius: 0 12px 12px 0;
}
.result-num {
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 8px;
}
.result-label {
  font-size: 13px;
  color: var(--muted);
  font-weight: 300;
  line-height: 1.5;
}

@media (max-width: 1024px) {
  .case-overview {
    grid-template-columns: repeat(2, 1fr);
  }
  .case-overview-item:nth-child(2) {
    border-right: none;
  }
  .case-overview-item:nth-child(3) {
    border-right: 1px solid var(--border);
  }
  .stack-grid {
    grid-template-columns: 1fr;
  }
  .stack-card:first-child,
  .stack-card:last-child {
    border-radius: 12px;
  }
  .results-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .result-card:first-child,
  .result-card:last-child {
    border-radius: 12px;
  }
}
@media (max-width: 768px) {
  .case-hero,
  .case-content,
  .cta-section {
    padding-left: var(--layout-gutter);
    padding-right: var(--layout-gutter);
  }
  .case-hero {
    padding-top: 120px;
  }
  .case-main-image {
    margin-left: var(--layout-gutter);
    margin-right: var(--layout-gutter);
    aspect-ratio: 16/9;
  }
  .case-overview {
    margin: 40px var(--layout-gutter) 0;
  }
  .feature-list {
    grid-template-columns: 1fr;
  }
  .results-grid {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 480px) {
  .case-hero {
    padding-top: 104px;
    padding-bottom: 48px;
  }
  .case-title {
    font-size: clamp(30px, 11vw, 42px);
  }
  .case-intro,
  .case-section p {
    font-size: 14px;
  }
  .case-overview {
    grid-template-columns: 1fr;
  }
  .case-overview-item {
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 18px 20px;
  }
  .case-overview-item:last-child {
    border-bottom: none;
  }
}