/* ---------- Recruiter-locked page ---------- */
body.cs-locked main.cs,
body.cs-locked .contact {
  display: none;
}

/* ---------- Case study layout ---------- */
.cs-container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.cs-section {
  padding: 80px 0;
  border-bottom: 1px solid var(--border);
}

.cs-heading {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(28px, 3.5vw, 36px);
  color: var(--text);
  margin-top: 8px;
}

.cs-heading--sm {
  font-size: 28px;
  margin-top: 0;
}

.cs-body {
  margin-top: 16px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--muted-strong);
  font-weight: 300;
}

.cs-body--wide {
  max-width: 720px;
}

.cs-body--strong {
  color: var(--muted-strong);
  font-size: 18px;
}

.cs-body--muted {
  color: var(--muted);
}

.cs-body strong {
  font-weight: 500;
  color: var(--text);
}

.cs-eyebrow-line {
  display: flex;
  align-items: center;
  gap: 8px;
}

.cs-eyebrow-line__rule {
  width: 16px;
  height: 1px;
  background: var(--border);
  flex-shrink: 0;
}

/* ---------- Hero ---------- */
.cs-hero {
  padding: 64px 0 40px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.cs-hero__title {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(36px, 6vw, 76px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text);
}

.cs-cover {
  padding-bottom: 64px;
}

.cs-cover img {
  width: 100%;
  border-radius: 8px;
  object-fit: cover;
  object-position: center;
  aspect-ratio: 1130 / 550;
}

.cs-cover--tall img {
  aspect-ratio: 1130 / 600;
}

.cs-cover--dim {
  position: relative;
}

.cs-cover--dim::after {
  content: '';
  position: absolute;
  inset: 0 0 64px 0;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 8px;
  pointer-events: none;
}

.cs-cover--contain {
  padding-bottom: 0;
}

.cs-cover--contain img {
  object-fit: contain;
  border-radius: 0;
  aspect-ratio: 1191 / 765;
}

/* ---------- Overview meta ---------- */
.cs-meta__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px 64px;
}

.cs-meta__item {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.cs-meta__value {
  font-size: 16px;
  color: var(--text);
}

@media (max-width: 640px) {
  .cs-meta__grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- Challenge ---------- */
.cs-challenge {
  display: flex;
  align-items: center;
  gap: 80px;
}

.cs-challenge__text {
  flex: 0 0 400px;
  max-width: 400px;
}

.cs-challenge__media {
  flex: 1;
}

.cs-challenge__media img {
  width: 100%;
  border-radius: 8px;
  object-fit: cover;
  aspect-ratio: 652 / 367;
}

@media (max-width: 900px) {
  .cs-challenge {
    flex-direction: column;
    gap: 32px;
  }

  .cs-challenge__text {
    flex: none;
    max-width: none;
  }
}

.cs-challenge--text-only {
  align-items: flex-start;
}

.cs-challenge__copy {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.cs-challenge__copy .cs-body {
  margin-top: 0;
}

/* ---------- Process steps ---------- */
.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 48px;
}

@media (max-width: 900px) {
  .process-grid {
    grid-template-columns: 1fr;
  }
}

.process-step {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.process-step__phase {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--accent);
}

.process-step__title {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--text);
}

.process-step__desc {
  font-size: 15px;
  line-height: 1.6;
  color: var(--muted-strong);
}

/* ---------- Metrics ---------- */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 48px;
}

@media (max-width: 900px) {
  .metrics-grid {
    grid-template-columns: 1fr;
  }
}

.metric-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.metric-card__number {
  font-family: var(--font-serif);
  font-size: 64px;
  line-height: 1;
  color: var(--text);
}

.metric-card__number--accent {
  color: var(--accent);
}

.metric-card__desc {
  font-size: 14px;
  line-height: 1.55;
  color: var(--muted-strong);
}

/* ---------- Personas ---------- */
.persona-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

@media (max-width: 1024px) {
  .persona-grid {
    grid-template-columns: 1fr;
  }
}

.persona-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.persona-card__header {
  display: flex;
  gap: 16px;
  align-items: center;
}

.persona-card__portrait {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 1px solid var(--border);
  object-fit: cover;
  flex-shrink: 0;
}

.persona-card__name {
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--text);
}

.persona-card__role {
  margin-top: 4px;
  font-size: 12.5px;
  color: var(--muted-strong);
}

.persona-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.persona-tag {
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--bg);
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--muted-strong);
}

.persona-tag--eco {
  background: rgba(42, 163, 153, 0.09);
  color: #2aa399;
}

.persona-tag--normal {
  background: rgba(91, 61, 245, 0.09);
  color: #5b3df5;
}

.persona-tag--sport {
  background: rgba(225, 29, 72, 0.09);
  color: #e11d48;
}

.persona-card__rule {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0;
}

.persona-card__block {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.persona-card__text {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted-strong);
}

.persona-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.persona-list li {
  position: relative;
  padding-left: 22px;
  font-size: 13px;
  line-height: 1.5;
}

.persona-list--goal li {
  color: var(--text);
}

.persona-list--goal li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.persona-list--frustration li {
  color: var(--muted-strong);
}

.persona-list--frustration li::before {
  content: '✕';
  position: absolute;
  left: 2px;
  font-size: 10px;
  top: 3px;
  color: var(--muted);
}

.metric-tag {
  display: inline-flex;
  padding: 6px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg);
  font-size: 12px;
  color: var(--text);
}

/* ---------- Showcase ---------- */
.cs-showcase__image {
  width: 100%;
  margin-top: 32px;
  border-radius: 8px;
  object-fit: cover;
}

/* ---------- Task flow ---------- */
.cs-taskflow {
  display: flex;
  flex-direction: column;
  gap: 56px;
}

.flow {
  margin-top: 32px;
}

.flow__title {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 24px;
  color: var(--text);
  margin-bottom: 32px;
}

.flow__row {
  display: flex;
  align-items: center;
  gap: 16px;
  overflow-x: auto;
  padding-bottom: 8px;
}

.flow__box {
  flex-shrink: 0;
  min-width: 110px;
  padding: 14px 16px;
  text-align: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 13px;
  color: var(--text);
}

.flow__box--sm {
  font-size: 12px;
  padding: 10px 14px;
  min-width: 130px;
}

.flow__decision {
  position: relative;
  flex-shrink: 0;
  width: 96px;
  height: 96px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.flow__decision::before {
  content: '';
  position: absolute;
  inset: 10px;
  transform: rotate(45deg);
  border: 1px solid var(--border);
  background: var(--bg-card);
  border-radius: 4px;
}

.flow__decision span {
  position: relative;
  z-index: 1;
  text-align: center;
  font-size: 11px;
  color: var(--text);
  padding: 0 10px;
}

.flow__branch {
  position: relative;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding-left: 24px;
}

.flow__branch::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: calc(100% + 20px);
  border: 1px solid var(--border);
  border-right: none;
  border-radius: 8px 0 0 8px;
}

.flow__arrow {
  flex-shrink: 0;
  width: 24px;
  height: 1px;
  background: var(--border);
  position: relative;
}

.flow__arrow::after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  width: 6px;
  height: 6px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  transform: translateY(-50%) rotate(-45deg);
}

/* ---------- Wireframe / final UI media ---------- */
.cs-media-block + .cs-media-block {
  margin-top: 64px;
}

.cs-image-pair {
  display: flex;
  gap: 24px;
  margin-top: 32px;
}

.cs-image-pair img {
  flex: 1;
  width: 50%;
  border-radius: 8px;
  object-fit: cover;
}

@media (max-width: 768px) {
  .cs-image-pair {
    flex-direction: column;
  }

  .cs-image-pair img {
    width: 100%;
  }
}

.cs-image-centered {
  display: block;
  margin: 32px auto 0;
  max-width: 800px;
  width: 100%;
  border-radius: 8px;
}

.cs-image-full {
  width: 100%;
  margin-top: 32px;
  border-radius: 8px;
}

.cs-image-trio {
  display: flex;
  gap: 24px;
  margin-top: 24px;
}

.cs-image-trio--single {
  max-width: calc(50% - 12px);
}

.cs-image-trio figure {
  flex: 1;
  margin: 0;
}

.cs-image-trio img {
  width: 100%;
  border-radius: 8px;
}

.cs-image-trio figcaption {
  margin-top: 12px;
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--muted-strong);
}

@media (max-width: 768px) {
  .cs-image-trio,
  .cs-image-trio--single {
    flex-direction: column;
    max-width: none;
  }
}

/* ---------- Next project ---------- */
.cs-next {
  padding: 80px 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: flex-start;
}

.cs-next__title {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(36px, 5vw, 56px);
  letter-spacing: -0.01em;
  color: var(--text);
}

/* ---------- Collage cover (J.AI) ---------- */
.cs-cover-collage {
  position: relative;
  height: 520px;
  margin-bottom: 64px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cs-cover-collage__bg {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 720px;
  max-width: none;
  transform: translate(-50%, -50%) rotate(10deg);
  opacity: 0.16;
  pointer-events: none;
}

.cs-cover-collage__fg {
  position: relative;
  width: 605px;
  max-width: 90%;
  border-radius: 8px;
  box-shadow: -20px 20px 20px 0px rgba(11, 68, 63, 0.23);
}

@media (max-width: 640px) {
  .cs-cover-collage {
    height: 360px;
  }

  .cs-cover-collage__bg {
    width: 480px;
  }
}

/* ---------- Challenge alignment + stacked media ---------- */
.cs-challenge--align-start {
  align-items: flex-start;
}

.cs-challenge__stack {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.cs-challenge__stack-image {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
}

/* ---------- Process (multi-phase, J.AI) ---------- */
.process-stack {
  display: flex;
  flex-direction: column;
  gap: 48px;
  margin-top: 48px;
}

.process-block {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 600px;
}

.process-row {
  display: flex;
  align-items: flex-start;
  gap: 48px;
}

@media (max-width: 900px) {
  .process-row {
    flex-direction: column;
    gap: 32px;
  }
}

.process-col-text {
  flex: 0 0 380px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.process-col-media {
  flex: 1;
  min-width: 0;
}

.process-col-media img {
  width: 100%;
  height: auto;
  border-radius: 8px;
}

.process-step__title--tight {
  margin-top: 8px;
}

.process-flow-frame {
  background: #fafafa;
  border-radius: 8px;
  padding: 24px;
}

.process-flow-frame img {
  width: 100%;
  height: auto;
  display: block;
}

/* ---------- Stat badges ---------- */
.stat-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 8px;
}

.stat-badge {
  width: 100px;
  height: 120px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px;
  border-radius: 20px;
  background: #bde7e5;
  text-align: center;
}

.stat-badge--wide {
  width: auto;
  min-width: 140px;
  padding: 10px 16px;
}

.stat-badge__number {
  font-family: var(--font-sans);
  font-style: italic;
  font-size: 32px;
  color: var(--text);
}

.stat-badge__label {
  font-family: var(--font-sans);
  font-style: italic;
  font-size: 13px;
  color: var(--text);
  line-height: 1.3;
}

/* ---------- Showcase split (J.AI) ---------- */
.cs-showcase--split {
  display: flex;
  align-items: center;
  gap: 48px;
}

@media (max-width: 900px) {
  .cs-showcase--split {
    flex-direction: column;
    align-items: flex-start;
  }
}

.cs-showcase__text {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.cs-showcase__text .cs-heading {
  margin-top: 0;
}

.cs-showcase__side-image {
  flex-shrink: 0;
  width: 420px;
  max-width: 100%;
  height: auto;
  mix-blend-mode: multiply;
}

.cs-body--sm {
  font-size: 14px;
  color: var(--text);
}

/* ---------- Comments ---------- */
.comments-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 48px;
}

@media (max-width: 900px) {
  .comments-grid {
    grid-template-columns: 1fr;
  }
}

.comment-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.comment-card__quote {
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.45;
  color: var(--text);
}