/* ============================================
   CASE STUDY LAYOUT
   ============================================ */
.case-study {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-md);
  padding-top: calc(var(--nav-height) + var(--space-xl));
}


/* ============================================
   SUMMARY BAR / HEADER
   ============================================ */
.cs-header {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.cs-title {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 400;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-xs);
}

.cs-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.cs-meta {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm) var(--space-lg);
  margin-bottom: var(--space-md);
}

.cs-meta-item {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.cs-meta-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent-hover);
}

.cs-meta-value {
  font-size: 0.9rem;
  color: var(--color-text);
  line-height: 1.4;
}

.cs-live-link {
  display: inline-block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-surface);
  background: var(--color-accent);
  padding: 0.6em 1.4em;
  border-radius: var(--border-radius);
  transition: background 0.2s ease;
}

.cs-live-link:hover {
  background: var(--color-accent-hover);
  color: var(--color-surface);
}


/* ============================================
   HERO IMAGE
   ============================================ */
.cs-hero-image {
  margin-bottom: var(--space-xl);
  border-radius: var(--border-radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.cs-hero-image img {
  width: 100%;
  height: auto;
  display: block;
}


/* ============================================
   SECTIONS
   ============================================ */
.cs-section {
  margin-bottom: var(--space-xl);
}

.cs-section-heading {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 400;
  color: var(--color-text);
  letter-spacing: -0.01em;
  margin-bottom: var(--space-sm);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid var(--color-border);
}

.cs-body {
  margin-bottom: var(--space-md);
}

.cs-body p {
  font-size: 1rem;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: var(--space-sm);
}

.cs-body p:last-child {
  margin-bottom: 0;
}


/* ============================================
   FIGURES & ARTIFACTS
   ============================================ */
.cs-figure {
  margin: var(--space-lg) 0;
  border-radius: var(--border-radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

.cs-figure img {
  width: 100%;
  height: auto;
  display: block;
}

.cs-figure figcaption {
  padding: var(--space-sm) var(--space-md);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  border-top: 1px solid var(--color-border);
}

.cs-artifact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.cs-artifact-grid .cs-figure {
  margin: 0;
}


/* ============================================
   PREV / NEXT NAVIGATION
   ============================================ */
.cs-pagination {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
  margin-bottom: var(--space-2xl);
}

.cs-pagination-link {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  flex: 1;
}

.cs-pagination-link--next {
  text-align: right;
}

.cs-back-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-accent-hover);
  text-align: center;
}

.cs-back-link:hover {
  color: var(--color-text);
}

.cs-pagination-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

.cs-pagination-title {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-accent-hover);
}

.cs-pagination-link:hover .cs-pagination-title {
  color: var(--color-text);
}


/* ============================================
   RESPONSIVE
   ============================================ */
@media screen and (max-width: 768px) {
  .cs-title {
    font-size: 1.8rem;
  }

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

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

  .case-study {
    padding-top: calc(88px + var(--space-xl));
  }
}