/* ==========================================================================
   Case page v1 — Editorial long-read.
   Builds on landing-v11.css tokens (palettes, fonts, --page-max, --pad-x).
   Body sets data-palette-active="<case>" to pick the palette.
   ========================================================================== */

/* ==========================================================================
   Hero
   ========================================================================== */
.case-hero {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: clamp(96px, 16vh, 200px) var(--pad-x) clamp(48px, 8vh, 96px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(32px, 5vh, 64px);
}
.case-hero-meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 24px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-dim);
}
.case-hero-back {
  color: var(--ink-dim);
  text-decoration: none;
  transition: color 180ms ease;
}
.case-hero-back:hover { color: var(--ink); }
.case-hero-byline {
  display: flex;
  gap: 24px;
  text-align: right;
}
.case-hero-num { color: var(--ink); font-weight: 500; }

.case-hero-title {
  font-family: var(--sans);
  font-weight: 400;
  font-size: clamp(44px, 6vw, 96px);
  line-height: 1.0;
  letter-spacing: -0.015em;
  color: var(--ink);
  max-width: 22ch;
}
.case-hero-title .line { display: block; }
.case-hero-title em {
  font-style: normal;
  color: var(--accent);
}

.case-hero-media {
  margin: 0;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--plate);
  border-radius: 24px;
  box-shadow: inset 0 0 0 1px var(--plate-edge);
}
.case-hero-media img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.case-hero-outcome {
  font-family: var(--sans);
  font-size: clamp(18px, 1.8vw, 24px);
  line-height: 1.4;
  color: var(--ink-soft);
  max-width: 52ch;
  letter-spacing: -0.005em;
}
.case-hero-outcome em {
  font-style: normal;
  color: var(--accent);
}

/* ==========================================================================
   Scan view — Research / Ideation / Execution / Impact at-a-glance
   ========================================================================== */
.case-scan {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: clamp(48px, 8vh, 96px) var(--pad-x);
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(24px, 3vw, 64px);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.case-scan-col {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  align-content: start;
}
.case-scan-head {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-dim);
  font-weight: 500;
  margin: 0;
}
.case-scan-col p {
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.5;
  color: var(--ink-soft);
  margin: 0;
}

/* ==========================================================================
   Shipped / Handed-off bar — scope summary below the scan
   ========================================================================== */
.case-shipped {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: clamp(32px, 5vh, 56px) var(--pad-x);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  border-bottom: 1px solid var(--rule);
}
.case-shipped-row {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: clamp(24px, 3vw, 48px);
  align-items: baseline;
}
.case-shipped-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-dim);
  font-weight: 500;
}
.case-shipped-body {
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.55;
  color: var(--ink-soft);
  margin: 0;
}
@media (max-width: 640px) {
  .case-shipped-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }
}

/* ==========================================================================
   Body — sticky left nav + content column
   ========================================================================== */
.case-body {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: clamp(72px, 12vh, 160px) var(--pad-x) clamp(64px, 10vh, 128px);
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: clamp(48px, 8vw, 128px);
  align-items: start;
}

.case-nav {
  position: sticky;
  top: 96px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  min-width: 0;
}
.case-nav-label {
  color: var(--ink-dim);
  margin-bottom: 20px;
}
.case-nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}
.case-nav-list a {
  color: var(--ink-dim);
  text-decoration: none;
  transition: color 180ms ease;
  display: block;
}
.case-nav-list a:hover { color: var(--ink); }

.case-content {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(64px, 10vh, 128px);
  max-width: 68ch;
  min-width: 0;
}
.case-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  min-width: 0;
}
.case-section-head {
  display: flex;
  gap: 24px;
  align-items: baseline;
  padding-bottom: 18px;
  background-image:
    linear-gradient(to right, var(--accent) 44px, transparent 44px),
    linear-gradient(var(--rule), var(--rule));
  background-size: 100% 2px, 100% 1px;
  background-position: left bottom, left bottom;
  background-repeat: no-repeat;
}
.case-section-num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink-dim);
  font-feature-settings: 'tnum' 1;
}
.case-section-title {
  font-family: var(--sans);
  font-weight: 400;
  font-size: clamp(22px, 2.4vw, 32px);
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 0;
}
.case-section-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink-soft);
  min-width: 0;
  overflow-wrap: break-word;
}
.case-section-body p { margin: 0; }
.case-section-body strong {
  color: var(--ink);
  font-weight: 500;
}
.case-section-body em {
  font-style: italic;
  color: var(--ink);
}

.case-subhead {
  font-family: var(--sans);
  font-weight: 500;
  font-size: 17px;
  color: var(--ink);
  margin: 8px 0 -12px;
  letter-spacing: -0.005em;
}

/* Execution-stream headings — one level between h2 section titles and inline subheads. */
.case-stream-head {
  font-family: var(--sans);
  font-weight: 500;
  font-size: clamp(19px, 1.8vw, 22px);
  color: var(--ink);
  letter-spacing: -0.008em;
  margin: 18px 0 -6px;
  padding-top: 26px;
  border-top: 1px solid var(--rule);
}
.case-stream-head:first-of-type {
  margin-top: 4px;
  padding-top: 0;
  border-top: 0;
}

.case-figure {
  margin: 16px 0 0;
  aspect-ratio: 5 / 4;
  overflow: hidden;
  background: var(--plate);
  border-radius: 16px;
  box-shadow: inset 0 0 0 1px var(--plate-edge);
}
.case-figure img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

/* Multi-image scrub: cursor Y-position cross-fades the stacked images,
   matching the home-page case-cover effect. JS lives in scripts/dante-scrub.js. */
.case-figure[data-scrub] {
  position: relative;
  transform-style: preserve-3d;
  transform: perspective(1200px)
             rotateX(var(--scrub-rx, 0deg))
             rotateY(var(--scrub-ry, 0deg));
  transition: transform 520ms cubic-bezier(.2,.7,.2,1);
}
.case-figure[data-scrub].is-scrubbing {
  transition: transform 140ms cubic-bezier(.2,.7,.2,1);
}
.case-figure[data-scrub] img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 420ms cubic-bezier(.2,.7,.2,1);
}
.case-figure[data-scrub] img.is-active { opacity: 1; }
@media (prefers-reduced-motion: reduce) {
  .case-figure[data-scrub] img { opacity: 0; transform: none; }
  .case-figure[data-scrub] img.is-active,
  .case-figure[data-scrub] img[data-zone="0"] { opacity: 1; }
}
.case-figure-caption {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-top: 12px;
}

/* Empty figure placeholder — visible in page so the drop-in slot is obvious.
   Fill by removing the --empty modifier and uncommenting the <img> inside. */
.case-figure--empty {
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px dashed var(--accent);
  box-shadow: none;
}
.case-figure--empty::before {
  content: "Image to add — " attr(data-needs);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-dim);
  padding: 24px;
  text-align: center;
  max-width: 36ch;
  line-height: 1.6;
}

/* ==========================================================================
   Pull quote
   ========================================================================== */
.case-pullquote {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: clamp(80px, 14vh, 180px) var(--pad-x);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.case-pullquote blockquote {
  max-width: 68ch;
  margin: 0 auto;
  text-align: center;
}
.case-pullquote p {
  font-family: var(--serif);
  font-size: clamp(24px, 2.2vw, 32px);
  line-height: 1.3;
  color: var(--ink);
  font-style: normal;
  margin: 0;
  text-wrap: balance;
}
.case-pullquote cite {
  display: block;
  margin-top: 32px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-dim);
  font-style: normal;
}

/* ==========================================================================
   Footer nav — next case
   ========================================================================== */
.case-footer {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: clamp(64px, 10vh, 128px) var(--pad-x) clamp(96px, 16vh, 200px);
}
.case-next {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  color: var(--ink);
  text-decoration: none;
  padding: 32px 0;
  border-top: 1px solid var(--rule);
  transition: padding 420ms cubic-bezier(.22,.86,.34,1);
}
.case-next:hover { padding: 40px 0 24px; }
.case-next-label {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-dim);
}
.case-next-title {
  font-family: var(--sans);
  font-size: clamp(28px, 4vw, 56px);
  font-weight: 400;
  letter-spacing: -0.015em;
  line-height: 1.05;
}
.case-next-title em {
  font-style: normal;
  color: var(--accent);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 900px) {
  .case-body {
    grid-template-columns: minmax(0, 1fr);
  }
  .case-nav {
    position: static;
    margin-bottom: 8px;
    max-width: 100%;
    overflow-x: auto;
  }
  .case-nav-list {
    grid-auto-flow: column;
    grid-auto-columns: max-content;
    gap: 20px;
  }
  .case-scan { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .case-scan { grid-template-columns: minmax(0, 1fr); }
  .case-hero-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .case-hero-byline { text-align: left; }

  /* Show full-width screenshots — never crop sides on phones. Single-image
     figures flow at the image's natural ratio; multi-zone scrub figures keep
     a fixed box (their imgs are absolutely positioned) but with a wider
     16/10 ratio that fits typical product screenshots without side-crop. */
  .case-figure {
    aspect-ratio: auto;
  }
  .case-figure img {
    height: auto;
    object-fit: contain;
  }
  .case-figure[data-scrub] {
    aspect-ratio: 16 / 10;
  }
  .case-figure[data-scrub] img {
    height: 100%;
  }
}