/* Shared structural components for case studies built from the MAPWA reference. */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body.case-study-page {
  margin: 0;
  overflow-x: hidden;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--case-font-body);
  font-size: var(--case-size-body);
}

.case-study-page a {
  color: inherit;
  text-decoration: none;
}

.case-study-page img,
.case-study-page video {
  display: block;
  max-width: 100%;
}

.case-study-main {
  width: 100%;
  min-height: 100vh;
  padding-top: 80px;
}

.case-study-layout {
  width: 100%;
}

.case-study-layout__main {
  min-width: 0;
}

.case-study-shell {
  width: min(var(--case-page-max), 100%);
  min-width: 0;
  margin: 0 auto;
  padding-inline: var(--case-page-gutter);
}

.case-section {
  padding-block: var(--case-section-space);
  scroll-margin-top: 102px;
}

.case-hero {
  padding-block: 16px 20px;
}

.case-hero__content {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(320px, 0.88fr);
  gap: 64px;
  padding: 38px 0 28px;
}

.case-title-group {
  display: grid;
  gap: 12px;
}

.case-kicker,
.case-section-label,
.case-detail__label,
.case-flow__label,
.case-media-placeholder__label {
  margin: 0;
  color: var(--muted);
  font-family: var(--case-font-body);
  font-size: var(--case-size-label);
  font-weight: 600;
  line-height: var(--case-leading-label);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.case-kicker,
.case-flow__label {
  color: var(--accent);
}

.case-title {
  max-width: 820px;
  margin: 0;
  font-family: var(--case-font-display);
  font-size: var(--case-size-h1);
  font-weight: 400;
  line-height: var(--case-leading-h1);
  letter-spacing: -0.025em;
}

.case-title em,
.case-heading em,
.case-flow__title em {
  color: var(--accent);
  font-style: italic;
  font-weight: inherit;
}

.case-heading,
.case-flow__title {
  margin: 0;
  font-family: var(--case-font-display);
  font-size: var(--case-size-h2);
  font-weight: 400;
  line-height: var(--case-leading-display);
  letter-spacing: -0.02em;
}

.case-intro,
.case-copy {
  margin: 0;
  color: rgba(15, 15, 15, 0.72);
  font-size: var(--case-size-body);
  font-weight: 400;
  line-height: var(--case-leading-body);
}

.case-intro {
  max-width: 610px;
  font-size: var(--case-size-intro);
  line-height: var(--case-leading-intro);
}

.case-hero__copy {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: 18px;
}

.case-details {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-top: 32px;
}

.case-detail__value {
  margin-top: 4px;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.4;
}

.case-section__header {
  display: grid;
  gap: var(--case-section-heading-gap);
  margin-bottom: var(--case-section-heading-gap);
}

.case-section__header .case-heading {
  max-width: 980px;
}

.case-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 3rem;
  margin-top: var(--case-section-heading-gap);
}

.case-metric strong {
  display: block;
  color: var(--accent);
  font-size: var(--case-size-metric);
  font-weight: 600;
  line-height: 1.1;
  white-space: nowrap;
}

.case-metric span {
  display: block;
  max-width: 260px;
  margin-top: 16px;
  color: rgba(15, 15, 15, 0.72);
  font-size: 16px;
  line-height: 1.4;
}

.case-chapter-list {
  display: grid;
  gap: var(--case-chapter-gap);
}

.case-flow,
.case-decision {
  display: grid;
  gap: 28px;
  padding-top: var(--case-chapter-padding);
  border-top: 1px solid var(--case-line-subtle);
}

.case-flow:first-child,
.case-decision:first-child {
  padding-top: 0;
  border-top: 0;
}

.case-flow__header,
.case-decision__header {
  display: grid;
  gap: 14px;
}

.case-flow__path {
  margin: 0;
  color: rgba(15, 15, 15, 0.58);
  font-size: var(--case-size-label);
  line-height: 1.5;
}

.case-flow__body,
.case-decision__body {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(220px, 1fr);
  gap: var(--case-content-gap);
  align-items: center;
}

.case-media-placeholder {
  display: grid;
  place-items: center;
  width: 100%;
  min-width: 0;
  aspect-ratio: var(--media-ratio, 16 / 9);
  padding: clamp(24px, 4vw, 52px);
  overflow: hidden;
  border: 1px solid var(--case-line-subtle);
  border-radius: var(--case-radius-media);
  background: color-mix(in srgb, var(--accent) 5%, #f5f5f5);
  color: rgba(15, 15, 15, 0.46);
  text-align: center;
}

.case-media-placeholder--hero {
  --media-ratio: 16 / 8;
}

.case-media-placeholder__content {
  display: grid;
  gap: 8px;
  justify-items: center;
}

.case-media-placeholder__type {
  font-size: 16px;
  font-weight: 500;
  line-height: 1.4;
}

.case-media-placeholder__caption {
  margin: 0;
  color: rgba(15, 15, 15, 0.48);
  font-size: var(--case-size-caption);
  line-height: 1.5;
}

.case-visual-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--case-content-gap);
}

.case-visual-grid .case-media-placeholder:last-child:nth-child(odd) {
  grid-column: 1 / -1;
}

.case-insights,
.case-leadership-list,
.case-reflection-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--case-content-gap);
  margin-top: var(--case-section-heading-gap);
}

.case-insight,
.case-leadership-item,
.case-reflection-item {
  min-width: 0;
}

.case-insight h3,
.case-leadership-item h3,
.case-reflection-item h3 {
  margin: 0;
  font-size: var(--case-size-body);
  line-height: var(--case-leading-body);
}

.case-insight p,
.case-leadership-item p,
.case-reflection-item p {
  margin: 6px 0 0;
  color: rgba(15, 15, 15, 0.72);
  font-size: var(--case-size-body);
  line-height: var(--case-leading-body);
}

.case-leadership-list {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.case-reflection-grid {
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
}

.case-placeholder-copy {
  color: rgba(15, 15, 15, 0.56);
  font-style: italic;
}

.case-back-link {
  display: inline-block;
  margin-top: 34px;
  color: var(--accent);
  font-family: var(--case-font-display);
  font-size: var(--case-size-body);
}

.spy-nav-slot,
.spy-nav {
  display: none;
}

@media (min-width: 1024px) {
  .case-study-layout {
    display: grid;
    grid-template-columns: 10.5rem minmax(0, 1fr);
    gap: clamp(4rem, 6vw, 6rem);
    width: min(var(--case-page-max), calc(100% - 48px));
    margin: 0 auto;
    align-items: start;
  }

  .case-study-shell {
    width: 100%;
    padding-inline: 0;
  }

  .spy-nav-slot {
    position: sticky;
    top: 80px;
    display: block;
    align-self: start;
  }

  .spy-nav {
    display: block;
  }

  .spy-nav__list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .spy-nav__link {
    display: inline-flex;
    align-items: center;
    width: 100%;
    padding: 3px 0;
    border: 0;
    background: transparent;
    color: var(--muted);
    font-family: var(--case-font-body);
    font-size: var(--case-size-label);
    font-weight: 600;
    line-height: var(--case-leading-label);
    text-align: left;
    cursor: pointer;
    transition: color 180ms ease, font-weight 180ms ease;
  }

  .spy-nav__dot {
    width: 8px;
    height: 8px;
    max-width: 0;
    margin-right: 0;
    border-radius: 2px;
    background: currentColor;
    opacity: 0;
    transition: opacity 180ms ease, max-width 180ms ease, margin-right 180ms ease;
  }

  .spy-nav__link.is-active {
    color: var(--accent);
    font-weight: 700;
  }

  .spy-nav__link.is-active .spy-nav__dot {
    max-width: 8px;
    margin-right: 8px;
    opacity: 1;
  }
}

@media (max-width: 980px) {
  .case-hero__content,
  .case-flow__body,
  .case-decision__body,
  .case-reflection-grid {
    grid-template-columns: 1fr;
  }

  .case-details,
  .case-leadership-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .case-study-shell {
    padding-inline: clamp(22px, 7vw, 34px);
  }

  .case-details,
  .case-metrics,
  .case-visual-grid,
  .case-insights,
  .case-leadership-list {
    grid-template-columns: 1fr;
  }

  .case-visual-grid .case-media-placeholder:last-child:nth-child(odd) {
    grid-column: auto;
  }

  .case-metrics {
    gap: 2rem;
  }

  .case-media-placeholder--hero {
    --media-ratio: 4 / 3;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}