/* ══════════════════════════════════════════════
   CASE STUDY PAGE — Full narrative layout
   ══════════════════════════════════════════════ */

/* ── Overview Bar ── */
.cs-overview {
  background: var(--surface-warm);
  border-bottom: 1px solid var(--border-light);
  padding: 0 var(--gutter);
}

.cs-overview-inner {
  max-width: var(--layout-max);
  margin: 0 auto;
  display: flex;
  divide: var(--border-light);
}

.cs-overview-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  width: 100%;
}

.cs-overview-item {
  padding: 28px 0;
  padding-right: 32px;
  border-right: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.cs-overview-item:first-child {
  padding-left: 0;
}

.cs-overview-item:last-child {
  border-right: none;
  padding-left: 32px;
  padding-right: 0;
}

.cs-overview-item:not(:first-child) {
  padding-left: 32px;
}

.cs-overview-label {
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.cs-overview-value {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
}

/* ── Narrative Sections ── */
.cs-narrative {
  padding: var(--space-96) var(--gutter);
  background: var(--bg);
}

.cs-narrative-inner {
  max-width: var(--layout-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 64px;
}

.cs-narrative-label {
  position: sticky;
  top: calc(var(--navbar-height) + 32px);
  height: fit-content;
}

.cs-narrative-label-text {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-secondary);
  border-left: 3px solid var(--olive);
  padding-left: 12px;
  line-height: 1.5;
}

.cs-narrative-label-num {
  display: block;
  color: var(--olive);
  margin-bottom: 4px;
}

.cs-narrative-body h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 28px;
}

.cs-narrative-body h2 .olive-accent { color: var(--olive); }

.cs-narrative-body p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 20px;
  max-width: 640px;
}

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

.cs-brief-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 32px;
}

.cs-brief-col {
  padding: 24px;
  border-left: 3px solid var(--border-light);
}

.cs-brief-col--asked {
  border-left-color: rgb(var(--ink-rgb) / 0.1);
}

.cs-brief-col--solved {
  border-left-color: var(--olive);
}

.cs-brief-col-label {
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 12px;
  display: block;
}

.cs-brief-col--solved .cs-brief-col-label {
  color: var(--olive);
}

.cs-brief-col p {
  font-size: 0.9rem !important;
  margin-bottom: 0 !important;
  color: var(--text) !important;
}

/* ── Approach Phases ── */
.cs-approach-phases {
  margin-top: 36px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.cs-phase {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 24px;
  padding: 24px;
  background: var(--surface-warm);
  align-items: start;
  transition: background 0.2s;
}

.cs-phase:hover {
  background: var(--olive-soft);
}

.cs-phase-num {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--olive);
  text-transform: uppercase;
  padding-top: 4px;
}

.cs-phase-name {
  font-size: 0.96rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  color: var(--text);
  margin-bottom: 8px;
}

.cs-phase-desc {
  font-size: 0.88rem !important;
  color: var(--text-secondary) !important;
  line-height: 1.6 !important;
  margin: 0 !important;
}

/* ── Design Showcase ── */
.cs-showcase {
  background: var(--text);
  padding: var(--space-96) var(--gutter);
}

.cs-showcase-inner {
  max-width: var(--layout-max);
  margin: 0 auto;
}

.cs-showcase-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 44px;
  flex-wrap: wrap;
  gap: 20px;
}

.cs-showcase-eyebrow {
  display: block;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--olive);
  margin-bottom: 12px;
}

.cs-showcase-heading {
  font-size: clamp(1.6rem, 3.5vw, 2.6rem);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  color: var(--white);
  margin: 0;
}

.cs-showcase-link {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
  transition: color 0.2s;
}

.cs-showcase-link:hover { color: var(--olive); }

.cs-browser {
  border: 1px solid rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.cs-browser-bar {
  background: rgba(255, 255, 255, 0.06);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.cs-browser-dots {
  display: flex;
  gap: 5px;
}

.cs-browser-dots i {
  display: block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  font-style: normal;
}

.cs-browser-url {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.4);
  font-family: monospace;
  letter-spacing: 0.02em;
}

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

/* ── Results Section ── */
.cs-results {
  padding: var(--space-96) var(--gutter);
  background: var(--bg);
}

.cs-results-inner {
  max-width: var(--layout-max);
  margin: 0 auto;
}

.cs-results-header {
  margin-bottom: 52px;
}

.cs-results-eyebrow {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--olive);
  border-left: 3px solid var(--olive);
  padding-left: 12px;
  margin-bottom: 16px;
}

.cs-results-heading {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 16px;
}

.cs-results-heading .olive-accent { color: var(--olive); }

.cs-results-context {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.65;
}

.cs-results-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
  background: var(--border-light);
  margin-top: 48px;
}

.cs-result-item {
  background: var(--bg);
  padding: 36px 28px;
  border-bottom: 3px solid transparent;
  transition: border-color 0.3s, background 0.2s;
}

.cs-result-item:hover {
  background: var(--olive-soft);
  border-bottom-color: var(--olive);
}

.cs-result-num {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--olive);
  line-height: 1;
  margin-bottom: 10px;
}

.cs-result-label {
  font-size: 0.84rem;
  color: var(--text);
  font-weight: 600;
  line-height: 1.4;
}

.cs-result-note {
  font-size: 0.74rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-top: 6px;
}

/* ── Client Quote ── */
.cs-quote {
  padding: var(--space-96) var(--gutter);
  background: var(--surface-warm);
}

.cs-quote-inner {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.cs-quote-mark {
  font-size: 5rem;
  line-height: 1;
  color: var(--olive);
  opacity: 0.3;
  font-family: Georgia, serif;
  display: block;
  margin-bottom: -16px;
}

.cs-quote-text {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  font-weight: 500;
  color: var(--text);
  line-height: 1.75;
  margin-bottom: 40px;
  font-style: italic;
}

.cs-quote-attribution {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.cs-quote-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--olive);
  background: var(--olive-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--olive);
  flex-shrink: 0;
}

.cs-quote-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cs-quote-name {
  font-size: 0.92rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.01em;
}

.cs-quote-role {
  font-size: 0.78rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-top: 2px;
}

.cs-quote-stars {
  color: var(--olive);
  font-size: 0.9rem;
  margin-top: 4px;
}

/* ── What We Learned ── */
.cs-learned {
  padding: 60px var(--gutter);
  background: var(--bg);
  border-top: 1px solid var(--border-light);
}

.cs-learned-inner {
  max-width: var(--layout-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 48px;
  align-items: start;
}

.cs-learned-label {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-secondary);
  border-left: 3px solid var(--olive);
  padding-left: 12px;
  line-height: 1.5;
}

.cs-learned-text {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* ── Next Case Study ── */
.cs-next {
  padding: 52px var(--gutter);
  background: var(--surface-warm);
  border-top: 1px solid var(--border-light);
}

.cs-next-inner {
  max-width: var(--layout-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.cs-next-label {
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 8px;
  display: block;
}

.cs-next-title {
  font-size: clamp(1.2rem, 2.5vw, 1.8rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--text);
}

.cs-next-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--olive);
  text-decoration: none;
  border-bottom: 1px solid var(--olive);
  padding-bottom: 3px;
  transition: opacity 0.2s;
}

.cs-next-link:hover { opacity: 0.7; }

/* ── Responsive ── */
@media (max-width: 900px) {
  .cs-overview-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .cs-overview-item {
    border-bottom: 1px solid var(--border-light);
  }
  .cs-overview-item:nth-child(2n) {
    border-right: none;
  }
  .cs-narrative-inner {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .cs-narrative-label {
    position: static;
  }
  .cs-brief-split {
    grid-template-columns: 1fr;
  }
  .cs-results-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .cs-learned-inner {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

@media (max-width: 600px) {
  .cs-narrative {
    padding: 52px var(--gutter);
  }
  .cs-showcase {
    padding: 52px var(--gutter);
  }
  .cs-results {
    padding: 52px var(--gutter);
  }
  .cs-results-grid {
    grid-template-columns: 1fr 1fr;
  }
  .cs-quote {
    padding: 52px var(--gutter);
  }
  .cs-phase {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}