/* ===== CASE STUDY STYLES ===== */

body { min-width: 380px; }
main { max-width: 1440px; margin-left: auto; margin-right: auto; }
.prose { min-width: 260px; }

/* ─── Hero header ─── */
.case-hero-header {
  padding: 180px 316px 80px;
}
.case-eyebrow-row {
  display: flex;
  justify-content: space-between;
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 60px;
}
.case-h1 {
  font-family: var(--f-display);
  font-weight: var(--display-weight);
  font-style: var(--display-italic);
  font-size: clamp(64px, 9vw, 140px);
  line-height: 0.98;
  letter-spacing: var(--tracking-display);
  margin-bottom: 48px;
}
.case-lede {
  font-size: 19px;
  line-height: 1.5;
  color: var(--fg);
}
.case-lede a {
  border-bottom: 1px solid var(--hairline);
  transition: border-color 0.2s;
}
.case-lede a:hover { border-color: var(--fg); }

/* ─── Meta strip ─── */
.case-meta-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  padding: 40px 316px;
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.case-meta-strip .k { margin-bottom: 10px; }
.case-meta-strip .v {
  color: var(--fg);
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: none;
  font-family: var(--f-body);
  line-height: 1.4;
}

/* ─── Hero visual ─── */
.case-visual {
  background: var(--bg);
  padding-left: 316px;
  padding-right: 316px;
}
.case-visual video,
.case-visual img {
  width: 100%;
  display: block;
  aspect-ratio: 2724 / 1648;
  object-fit: cover;
}
.case-video-player {
  position: relative;
  cursor: pointer;
}
.case-video-player video {
  display: block;
  width: 100%;
}
.case-video-btn {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: transparent;
  border: none;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.2s ease;
}
.case-video-btn svg {
  width: 56px;
  height: 56px;
  color: #fff;
  filter: drop-shadow(0 2px 12px rgba(0,0,0,0.4));
}
.case-video-player.is-paused .case-video-btn,
.case-video-player.is-ended .case-video-btn { opacity: 1; }

/* ─── Content sections ─── */
section.case-section {
  padding-top: 40px;
  padding-bottom: 40px;
  padding-left: 316px;
  padding-right: 316px;
  border-top: none;
}
.section-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 60px;
}

/* ─── Wide grid variant — label stacks above content ─── */
.section-grid--wide {
  grid-template-columns: 1fr;
  gap: 0;
}
.section-grid--wide .section-label {
  margin-bottom: 40px;
}

/* ─── Prose ─── */
.prose {
  font-size: 16px;
  line-height: 1.65;
}
.prose p + p { margin-top: 1.5em; }
.prose p + ul,
.prose ul + p { margin-top: 1.5em; }
.prose strong { font-weight: 600; }
.prose a {
  border-bottom: 1px solid var(--hairline);
  transition: border-color 0.2s;
}
.prose a:hover { border-color: var(--fg); }
.prose ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.prose li {
  position: relative;
  padding-left: 1.25em;
  margin-bottom: 0.35em;
}
.prose li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--muted);
}

/* ─── Inline code ─── */
.inline-code {
  font-family: var(--f-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}

/* ─── Numbered subsections ─── */
.case-points-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  column-gap: 48px;
  row-gap: 64px;
  margin-top: 64px;
}
.case-point {
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.case-point-visual {
  background: var(--surface-raised, var(--hairline));
  border-radius: 8px;
  aspect-ratio: 1216 / 1080;
  overflow: hidden;
}
.case-point-video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.case-point-label {
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 20px;
}
.case-point h3 {
  font-family: var(--f-display);
  font-weight: var(--display-weight);
  font-style: var(--display-italic);
  font-size: clamp(20px, 2.5vw, 28px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin-bottom: 32px;
  max-width: 24ch;
}

/* ─── Placeholders (for missing images) ─── */
.case-placeholder {
  background: var(--surface);
  border: 1px solid var(--hairline);
  position: relative;
  overflow: hidden;
}
.case-placeholder .stripes {
  position: absolute; inset: 0;
  background: repeating-linear-gradient(45deg, transparent 0 18px, color-mix(in oklab, var(--fg) 4%, transparent) 18px 19px);
}
.case-placeholder .ph-label {
  position: absolute;
  left: 16px; bottom: 14px;
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ─── Context frames ─── */
.context-frames {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 40px;
  margin-bottom: 40px;
}
.context-frame-wrap { aspect-ratio: 4/3; }

/* ─── Fulfillment diagram ─── */
.fulfillment-diagram {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
  margin-top: 32px;
  margin-bottom: 32px;
}
.fulfillment-party {
  background: var(--bg);
  padding: 32px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.fulfillment-icon-wrap {
  width: 60px; height: 60px;
  flex-shrink: 0;
  background: var(--surface);
  border: 1px solid var(--hairline);
  position: relative;
  overflow: hidden;
}
.fulfillment-icon-wrap .stripes {
  position: absolute; inset: 0;
  background: repeating-linear-gradient(45deg, transparent 0 8px, color-mix(in oklab, var(--fg) 5%, transparent) 8px 9px);
}
.fulfillment-icon-wrap img {
  width: 100%; height: 100%;
  object-fit: contain;
  display: block;
}
.fulfillment-label {
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ─── Screenshot / secondary media ─── */
.case-screenshot {
  display: block;
  width: 100%;
  border: 1px solid var(--hairline);
  object-fit: cover;
  margin-top: 40px;
  margin-bottom: 40px;
}
.case-media-secondary {
  display: block;
  width: 100%;
  border: 1px solid var(--hairline);
  margin-top: 40px;
}

/* ─── Metrics ─── */
.case-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
  margin-top: 48px;
  text-align: center;
}
.metric .k {
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 12px;
}
.metric .v {
  font-family: var(--f-display);
  font-weight: var(--display-weight);
  font-style: var(--display-italic);
  font-size: clamp(48px, 7vw, 96px);
  line-height: 1;
  letter-spacing: var(--tracking-display);
  color: var(--accent);
}
.metric .s {
  font-family: var(--f-mono);
  font-size: 13px;
  color: var(--muted);
  margin-top: 10px;
  line-height: 1.5;
  max-width: 28ch;
}

/* ─── Pull-quote ─── */
.pullquote {
  margin: 32px 0;
  padding: 20px 28px;
  border-left: 2px solid var(--muted);
  font-family: var(--f-display);
  font-style: italic;
  font-size: 19px;
  line-height: 1.5;
  color: var(--fg);
  max-width: 52ch;
}

/* ─── Back nav ─── */
.case-back-nav {
  padding: 60px 316px 80px;
  border-top: 1px solid var(--hairline);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ─── Inventory square diagram ─── */
.inv-sq-fig {
  margin: 28px 0;
  max-width: 480px;
  font-family: var(--f-mono);
}
.inv-sq {
  width: 100%;
  display: block;
  color: var(--fg);
}
.inv-sq-zone {
  cursor: default;
  transition: opacity 0.18s ease;
}
.inv-sq-zone .zone-fill {
  transition: fill 0.15s ease;
}

/* Default fills */
.inv-sq-zone[data-zone="unavailable"] .zone-fill,
.inv-sq-zone[data-zone="committed"] .zone-fill {
  fill: color-mix(in oklab, var(--fg) 5%, transparent);
}
.inv-sq-zone[data-zone="available"] .zone-fill {
  fill: color-mix(in oklab, var(--fg) 2%, transparent);
}
.inv-sq-zone[data-zone="sellable"] .zone-fill {
  fill: color-mix(in oklab, var(--accent) 10%, transparent);
}

/* Hover fills */
.inv-sq-zone[data-zone="unavailable"]:hover .zone-fill,
.inv-sq-zone[data-zone="committed"]:hover .zone-fill {
  fill: color-mix(in oklab, var(--fg) 14%, transparent);
}
.inv-sq-zone[data-zone="available"]:hover .zone-fill {
  fill: color-mix(in oklab, var(--accent) 6%, transparent);
}
.inv-sq-zone[data-zone="sellable"]:hover .zone-fill {
  fill: color-mix(in oklab, var(--accent) 22%, transparent);
}

/* Dim unrelated zones on hover */
.inv-sq:has(.inv-sq-onhand:hover) [data-zone="unavailable"],
.inv-sq:has(.inv-sq-onhand:hover) [data-zone="committed"],
.inv-sq:has(.inv-sq-onhand:hover) [data-zone="available"],
.inv-sq:has(.inv-sq-onhand:hover) [data-zone="sellable"] {
  opacity: 0.2;
}
.inv-sq:has([data-zone="unavailable"]:hover) [data-zone="committed"],
.inv-sq:has([data-zone="unavailable"]:hover) [data-zone="available"],
.inv-sq:has([data-zone="unavailable"]:hover) [data-zone="sellable"],
.inv-sq:has([data-zone="committed"]:hover) [data-zone="unavailable"],
.inv-sq:has([data-zone="committed"]:hover) [data-zone="available"],
.inv-sq:has([data-zone="committed"]:hover) [data-zone="sellable"],
.inv-sq:has([data-zone="available"]:hover) [data-zone="unavailable"],
.inv-sq:has([data-zone="available"]:hover) [data-zone="committed"],
.inv-sq:has([data-zone="sellable"]:hover) [data-zone="unavailable"],
.inv-sq:has([data-zone="sellable"]:hover) [data-zone="committed"] {
  opacity: 0.25;
}

/* Structural elements */
.inv-sq-border {
  stroke: var(--fg);
  stroke-width: 6px;
  opacity: 0.5;
  transition: opacity 0.15s ease;
}
.inv-sq:has(.inv-sq-onhand:hover) .inv-sq-border {
  opacity: 1;
}
.inv-sq-divider {
  stroke: var(--hairline);
  stroke-width: 1px;
  stroke-dasharray: 5 3;
}
.inv-sq-sell-border {
  stroke: var(--accent);
  stroke-width: 1.5px;
  stroke-dasharray: 6 4;
  opacity: 0.7;
}
.inv-sq-onhand {
  cursor: default;
}

/* Labels */
.inv-sq-lbl {
  font-family: var(--f-mono);
  font-size: 10px;
  fill: var(--muted);
}
.inv-sq-lbl-accent {
  fill: var(--accent);
}

/* Caption */
.inv-sq-caption {
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 10px;
  display: block;
}

/* Tooltip */
.inv-sq-info {
  position: fixed;
  z-index: 100;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.12s ease;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: 6px;
  padding: 10px 12px;
  max-width: 220px;
}
.inv-sq-info.visible {
  opacity: 1;
}
.inv-sq-info-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--fg);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: color 0.12s ease;
  margin-bottom: 4px;
}
.inv-sq-info-sep {
  display: none;
}
.inv-sq-info-def {
  display: block;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
  font-family: var(--f-body);
}

/* ─── Responsive ─── */
@media (max-width: 1260px) {
  .case-hero-header { padding-left: 60px; padding-right: 60px; }
  .case-meta-strip { padding-left: 60px; padding-right: 60px; }
  .case-visual { padding-left: 60px; padding-right: 60px; }
  section.case-section { padding-left: 60px; padding-right: 60px; }
  .case-back-nav { padding-left: 60px; padding-right: 60px; }
  .section-grid { grid-template-columns: 1fr; gap: 24px; }
}

@media (max-width: 760px) {
  .case-hero-header { padding: 120px 20px 60px; }
  .case-eyebrow-row { margin-bottom: 40px; }
  .case-meta-strip { grid-template-columns: 1fr 1fr; padding: 24px 20px; gap: 20px; }
  .case-visual { padding-left: 20px; padding-right: 20px; }
  section.case-section { padding: 60px 20px; }
  .section-grid { grid-template-columns: 1fr; gap: 24px; }
  .context-frames { grid-template-columns: 1fr; }
  .fulfillment-diagram { grid-template-columns: 1fr; }
  .case-metrics { grid-template-columns: 1fr; }
  .case-points-grid { grid-template-columns: 1fr; }
  .case-back-nav { padding: 40px 20px 60px; flex-direction: column; align-items: flex-start; gap: 24px; }
}

/* ===== INLINE TERM TOOLTIP ===== */
.term-tip {
  display: inline;
  text-decoration: underline;
  text-decoration-style: dotted;
  text-underline-offset: 3px;
  cursor: default;
}
.term-tip-box {
  position: fixed;
  top: 0;
  left: 0;
  width: 220px;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: 6px;
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.12s ease;
  z-index: 500;
}
.term-tip-box.visible {
  opacity: 1;
}
.term-tip-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--fg);
  font-family: var(--f-body);
  line-height: 1.4;
}
.term-tip-def {
  font-size: 13px;
  font-weight: 400;
  color: var(--muted);
  font-family: var(--f-body);
  line-height: 1.5;
}