/* Case Study Page — shared across all individual case study pages */

/* ── Header ─────────────────────────────────────────────────── */

.cs-hero {
  background: var(--color-background);
  padding-top: calc(var(--header-height) + var(--space-xl));
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-gray-light);
}

.cs-hero-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.cs-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.cs-client-logo {
  height: 32px;
  width: auto;
  opacity: 0.85;
  flex-shrink: 0;
}

.cs-client-logo--lg {
  height: 72px;
}

.cs-hero-title {
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: var(--font-weight-medium);
  line-height: 1.1;
  color: var(--color-black);
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  max-width: 900px;
}

/* ── Body layout ─────────────────────────────────────────────── */

.cs-body {
  background: var(--color-background);
  padding-bottom: var(--space-2xl);
}

/* Alternating section backgrounds */
.cs-section {
  padding: var(--space-2xl) 0;
  border-bottom: 1px solid var(--color-gray-light);
}

.cs-section:last-of-type {
  border-bottom: none;
}

.cs-section-white {
  background: var(--color-white);
}

/* Two-column layout: label | content */
.cs-section-inner {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.cs-section-label-col {
  padding-top: 3px; /* optical alignment with first line of text */
}

.cs-section-content {
  max-width: 680px;
}

.cs-prose p {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-accent);
  margin: 0 0 var(--space-md) 0;
}

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

.cs-prose a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--color-secondary);
  transition: text-decoration-color var(--transition-fast);
}

.cs-prose a:hover {
  text-decoration-color: var(--color-accent);
}

/* ── Component list (platform features, modules, etc.) ──────── */

.cs-components {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: var(--space-lg);
  border-top: 1px solid var(--color-gray-light);
}

.cs-component {
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-gray-light);
}

.cs-component-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-black);
  margin: 0 0 4px 0;
}

.cs-component-desc {
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--color-accent);
  margin: 0;
}

[data-theme="dark"] .cs-components {
  border-top-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .cs-component {
  border-bottom-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .cs-component-title {
  color: #FFFFFF;
}

[data-theme="dark"] .cs-component-desc {
  color: #E0E0E0;
}

/* ── Outcomes ────────────────────────────────────────────────── */

.cs-outcomes-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.cs-outcome-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--color-background);
  border-radius: var(--border-radius-xl);
  border: 1px solid var(--color-gray-light);
}

.cs-section-white .cs-outcome-item {
  background: var(--color-white);
}

.cs-outcome-arrow {
  color: var(--color-primary);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-xl);
  flex-shrink: 0;
  line-height: 1.4;
}

.cs-outcome-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.cs-outcome-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-black);
  margin: 0;
  line-height: 1.3;
}

.cs-outcome-desc {
  font-size: var(--font-size-base);
  color: var(--color-accent);
  margin: 0;
  line-height: var(--line-height-relaxed);
}

/* ── Video embed ─────────────────────────────────────────────── */

.cs-video-embed {
  position: relative;
  padding-top: 56.25%; /* 16:9 */
  border-radius: var(--border-radius-xl);
  overflow: hidden;
}

.cs-video-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* ── Closing / CTA ───────────────────────────────────────────── */

.cs-closing {
  background: var(--color-white);
  padding: var(--space-2xl) 0;
}

.cs-closing-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.cs-closing-text {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-accent);
  margin: 0;
}

.cs-closing-action {
  display: flex;
  justify-content: flex-end;
}

.cs-cta-link .arrow-btn {
  transition: none;
}

/* ── Dark mode ───────────────────────────────────────────────── */

[data-theme="dark"] .cs-hero {
  background: var(--color-background);
  border-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .cs-hero-title {
  color: #FFFFFF;
}

[data-theme="dark"] .cs-body {
  background: var(--color-background);
}

[data-theme="dark"] .cs-section {
  border-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .cs-section-white {
  background: var(--color-background);
}

[data-theme="dark"] .cs-prose p {
  color: #E0E0E0;
}

[data-theme="dark"] .cs-outcome-item {
  background: #000000;
  border-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .cs-section-white .cs-outcome-item {
  background: #000000;
}

[data-theme="dark"] .cs-outcome-title {
  color: #FFFFFF;
}

[data-theme="dark"] .cs-outcome-desc {
  color: #E0E0E0;
}

[data-theme="dark"] .cs-closing {
  background: var(--color-background);
}

[data-theme="dark"] .cs-closing-text {
  color: #E0E0E0;
}

/* ── Mobile ──────────────────────────────────────────────────── */

@media (max-width: 768px) {
  .cs-hero {
    padding-top: calc(var(--header-height) + var(--space-lg));
    padding-bottom: var(--space-lg);
  }

  .cs-hero-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
  }

  .cs-hero-title {
    font-size: clamp(1.8rem, 8vw, 2.8rem);
  }

  .cs-section {
    padding: var(--space-xl) 0;
  }

  .cs-section-inner {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .cs-section-content {
    max-width: none;
  }

  .cs-prose p {
    font-size: var(--font-size-base);
  }

  .cs-outcome-item {
    padding: var(--space-md);
  }

.cs-closing-inner {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .cs-closing-action {
    justify-content: flex-start;
  }
}