/* ==========================================================================
   Case study template (040). Values from reference/case-study.dc.html
   (desktop, 1440) and reference/case-study-mobile.dc.html (phone, 360).
   Each case study sets on <body>:
     --accent     the project colour (chapter numbers, the wicked part)
     --accent-small  optional: a lighter accent for the 13px chapter
                  numbers, where the accent itself is under 4.5:1
     --on-accent  text on the accent (selection, buttons): black or white
   Logo, nav and footer keep the brand yellow (014).
   ========================================================================== */

/* The accent isn't yellow here: no yellow paint on the accent buttons */
.case {
  --accent-paint: none;
}

/* --------------------------------------------------------------------------
   Stage: the case study (#csMain) and, on desktop, the scroll spacer that
   drives the Next up slide (js/case.js)
   -------------------------------------------------------------------------- */
.cs-main {
  position: relative;
  z-index: 1;
  padding-block: var(--sp-24) var(--sp-96);
}
/* Darkens the case study as Next up arrives (desktop and phone) */
.cs-dim {
  position: absolute;
  inset: 0;
  z-index: var(--z-cs-dim);
  background: var(--ink);
  opacity: 0;
  pointer-events: none;
}
.cs-spacer {
  display: none; /* only when the Next up slide runs (.next-live) */
  height: 1200px;
}

/* The flow of blocks: media and text, 8px apart */
.cs-flow {
  display: flex;
  flex-direction: column;
  gap: var(--sp-8);
}

/* --------------------------------------------------------------------------
   Media (034): every photo in a white frame with gloss, square corners.
   Ratios: desktop class first, phone override (.m-…) second.
   -------------------------------------------------------------------------- */
.media {
  position: relative;
  z-index: var(--z-media);
  margin: 0;
  overflow: hidden;
  border: var(--sp-12) solid var(--frame);
  border-radius: 0;
  background: var(--card);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.5);
}
.media::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  background: linear-gradient(135deg, rgba(255, 255, 255, .16) 0%, rgba(255, 255, 255, .04) 36%, rgba(255, 255, 255, 0) 50%, rgba(255, 255, 255, .07) 100%);
}
.media > img,
.media > video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media > img.obj-y55 {
  object-position: 50% 55%;
}
.media > img.obj-y60 {
  object-position: 50% 60%;
}

.ar-wide   { aspect-ratio: 16 / 9; }
.ar-square { aspect-ratio: 1; }
.ar-banner { aspect-ratio: 2000 / 997; } /* a wide banner, whole */
.ar-photo  { aspect-ratio: 3 / 2; }      /* a landscape photo, whole */
.ar-setup  { aspect-ratio: 2500 / 1619; } /* De Bote's set-up photo, whole */

/* A pair of square images (the Op Jezelf cards), side by side. Room above
   each for its tape. */
.cs-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--sp-40) var(--gutter);
  padding-top: var(--sp-16);
}
.cs-row > * {
  flex: 0 0 calc((100% - var(--gutter)) / 2);
}
/* One wide card on its own (Op Jezelf testing) */
.cs-row--1 > * {
  flex-basis: 100%;
}

/* --------------------------------------------------------------------------
   Hero: 16:9 in a 12px frame on desktop; a tilted polaroid with tape on
   phones (the tape only shows there)
   -------------------------------------------------------------------------- */
.cs-hero {
  position: relative;
  z-index: var(--z-media);
}
.cs-hero .tape {
  display: none;
}

/* --------------------------------------------------------------------------
   Text blocks: title or label in cols 1-4, text in cols 5-12
   -------------------------------------------------------------------------- */
.cs-text {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--gutter);
  row-gap: var(--sp-16);
  padding-block: var(--sp-96) var(--sp-56);
}
.cs-text > :first-child {
  grid-column: 1 / span 4;
}
.cs-text > :nth-child(2) {
  grid-column: 5 / -1;
}
.cs-intro {
  padding-top: var(--sp-48);
}
.cs-body {
  display: flex;
  flex-direction: column;
  gap: var(--sp-16);
  max-width: 520px;
}
.cs-body p {
  font-weight: 300;
  color: var(--bone-muted);
}
.cs-body strong {
  font-weight: 500;
  color: var(--bone);
}
.cs-title {
  font-size: var(--fs-h1);
  line-height: var(--lh-h1);
}
/* A title with a long word ('SOMETHING') still fits cols 1-4 */
.cs-title--long {
  font-size: clamp(40px, 4.8vw, 72px);
}
/* A status under the title ('In progress', ReStock 050): ink on the
   page's accent */
.cs-tag {
  display: inline-block;
  margin-top: var(--sp-16);
  padding: 6px 10px;
  background: var(--accent);
  color: var(--on-accent);
  font-size: var(--fs-label);
  line-height: var(--lh-label);
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.cs-lead,
.cs-body .cs-lead {
  font-size: var(--fs-lead);
  line-height: var(--lh-lead);
  font-weight: 300;
  color: var(--bone);
}
.cs-em {
  color: var(--bone);
}

/* Facts: My role, Team, Discipline, Year */
.cs-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--sp-16);
  margin: var(--sp-8) 0 0;
}
.cs-facts div {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}
.cs-facts dt {
  color: var(--muted);
  font-size: var(--fs-label);
  line-height: var(--lh-label);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.cs-facts dd {
  margin: 0;
  font-size: var(--fs-small);
  line-height: var(--lh-small);
  font-weight: 300;
}

/* Chapter heading: the number sits in front like an annotation (040). It
   scales down so it never runs into the text next to it. */
.cs-h2 {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  font-size: clamp(40px, 4.4vw, 56px);
  line-height: 1;
}
.cs-num {
  padding-top: 6px;
  font-size: var(--fs-label);
  line-height: 13px;
  letter-spacing: 0.08em;
  color: var(--accent-small, var(--accent));
}

/* Small heading for a quote block */
.cs-label {
  color: var(--muted);
  font-size: var(--fs-label);
  line-height: var(--lh-label);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
/* A small note under a block, e.g. where a summary comes from, or under
   a figure */
.cs-body .cs-note,
.cs-fig-note {
  font-size: var(--fs-small);
  line-height: var(--lh-small);
  color: var(--muted);
}
/* Lined up with the inside of the figure's frame */
.cs-fig-note {
  margin: 12px 8px 0;
}

/* --------------------------------------------------------------------------
   The wicked part (007, 040): handwritten note in the project colour with
   an arrow, the line itself in Lead size
   -------------------------------------------------------------------------- */
.wicked {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--gutter);
  padding-block: var(--sp-56) 72px;
}
/* Under a row of images: the chapter-heading rhythm above, nothing under
   it (the next chapter brings its own space) */
.wicked--after-media {
  padding-block: var(--sp-96) 0;
}
/* Closer to the images above (the De Bote mockup) */
.wicked--close {
  padding-top: var(--sp-56);
}
/* Between two rows of images: the same room above and below (ReStock,
   050) */
.wicked--between {
  padding-block: 120px;
}
.wicked-note {
  position: relative;
  color: var(--accent);
  grid-column: 1 / span 4;
  justify-self: end;
  align-self: center;
  width: 200px;
  height: 72px;
}
.wicked-note .hand {
  position: absolute;
  top: 0;
  left: 0;
  font-size: var(--fs-hand);
  line-height: 32px;
  color: var(--accent);
  transform: rotate(-6deg);
}
.wicked-note svg {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 72px;
  height: 40px;
  overflow: visible;
  transform: scaleX(-1) rotate(-10deg);
}
.wicked-line {
  grid-column: 5 / -1;
  max-width: 720px;
  font-size: var(--fs-lead);
  line-height: var(--lh-lead);
  font-weight: 300;
  color: var(--bone);
}
.wicked-line span {
  white-space: nowrap;
}
/* A line that fits on one line sits level with the arrowhead (051) */
.wicked--one .wicked-line {
  align-self: end;
  margin-bottom: 6px;
}

/* --------------------------------------------------------------------------
   Numbers (035): a row of three, no boxes
   -------------------------------------------------------------------------- */
.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--sp-32);
  margin: 0;
  padding: var(--sp-64) 0 var(--sp-80);
  list-style: none;
}
.stats li {
  display: flex;
  flex-direction: column;
  gap: var(--sp-12);
}
.stat-num {
  font-size: var(--fs-h2);
  line-height: var(--fs-h2);
  color: var(--bone);
}
.stat-label {
  font-size: var(--fs-small);
  line-height: var(--lh-small);
  font-weight: 300;
  color: var(--bone-muted);
}

/* --------------------------------------------------------------------------
   Next up (024, 040). Default: in the page flow, end state (no JS, reduced
   motion, phones). With .next-live (js/case.js, desktop only) it pins under
   the case study while the case study slides left over it, scrubbed by the
   spacer; when the slide is done both unpin and scroll away together, and
   the footer follows in the flow (never on top of Next up).
   -------------------------------------------------------------------------- */
.next {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
}
.next-inner {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  grid-template-rows: 1fr auto auto 1fr auto auto;
  column-gap: var(--gutter);
  height: 100%;
  min-height: inherit;
  padding-block: var(--header-h) var(--sp-48);
}
.next-label {
  grid-column: 4 / span 6;
  grid-row: 2;
  margin-bottom: var(--sp-16);
  color: var(--muted);
  font-size: var(--fs-label);
  line-height: var(--lh-label);
  font-weight: 600;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}
.next-title {
  grid-column: 4 / span 6;
  grid-row: 3;
  display: flex;
  flex-direction: column;
  font-size: var(--fs-lead);
  line-height: var(--lh-lead);
  font-weight: 300;
  color: var(--bone);
  text-decoration: none;
}
.next-title:hover {
  color: var(--bone);
}
.next-sub {
  color: var(--muted);
}
.next-all {
  grid-column: 9 / span 4;
  grid-row: 5;
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--sp-16);
  color: var(--muted);
  font-size: var(--fs-label);
  line-height: var(--lh-label);
  font-weight: 600;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}
.next-all a {
  color: var(--muted);
  text-decoration: none;
}
.next-all a:hover {
  color: var(--bone);
}
/* Preview: grows from its bottom-right corner (clip-path + inner scale) */
.next-prev {
  position: relative;
  grid-column: 9 / span 4;
  grid-row: 6;
  display: block;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  text-decoration: none;
}
.next-prev-in {
  position: absolute;
  inset: 0;
  display: block;
  background: var(--placeholder);
  transform-origin: 100% 100%;
}
/* The next project's homepage image or video, never cut off (024) */
.next-prev-in img,
.next-prev-in > video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* Live (desktop, motion allowed). Stage = case study (height H), Next up,
   spacer (1200). Next up is one screen tall and pulled up by one screen, so
   it sits behind the end of the case study; both are sticky, so they pin
   together through the spacer and let go together at the end of the stage. */
.next-live .cs-main {
  will-change: transform;
}
.next-live .cs-spacer {
  display: block;
}
.next-live .next {
  position: sticky;
  top: 0;
  z-index: 0;
  height: 100vh;
  min-height: 0;
  margin-top: -100vh;
}
.next-live .next-label,
.next-live .next-title,
.next-live .next-all {
  opacity: 0;
}
.next-live .next-prev {
  clip-path: inset(89% 0 0 89%);
}
.next-live .next-prev-in {
  transform: scale(.5);
}

/* The footer follows Next up */
.case .site-footer {
  margin-top: var(--sp-40);
}

/* Below 1380px a heading sits above its text, full width, instead of
   beside it: it never overlaps or clips the text */
.cs-text > * {
  min-width: 0;
}
@media (max-width: 1380px) {
  .cs-text {
    row-gap: var(--sp-24);
  }
  .cs-text > :first-child,
  .cs-text > :nth-child(2) {
    grid-column: 1 / -1;
  }
  .cs-body {
    max-width: 640px;
  }
}

/* --------------------------------------------------------------------------
   Phones (below 760px, 022/028/040): everything stacks; images run 8px
   from the screen edge, text 16px; Next up scrolls in straight under the
   case while the case study darkens (js/case.js).
   -------------------------------------------------------------------------- */
@media (max-width: 759.98px) {
  .cs-main {
    padding-block: 0 var(--sp-48); /* no divider above Next up (054) */
  }

  .cs-flow {
    margin-inline: calc(var(--sp-8) - var(--margin)); /* images 8px from the edge */
  }
  .cs-flow > .cs-text,
  .cs-flow > .stats {
    padding-inline: var(--sp-8);
  }
  .cs-flow > .wicked {
    padding-inline: var(--sp-16);
  }

  .media {
    border-width: var(--sp-8);
    box-shadow: 0 14px 32px rgba(0, 0, 0, 0.5);
  }

  /* Phone ratio (034): 4:5 */
  .m-ar-tall { aspect-ratio: 4 / 5; }

  .cs-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: var(--sp-32);
  }

  /* Hero: tilted polaroid with tape */
  .cs-hero {
    padding: var(--sp-32) var(--sp-16) var(--sp-8);
  }
  .cs-hero .media {
    padding: var(--sp-8) var(--sp-8) var(--sp-40);
    border: 0;
    background: var(--frame);
    aspect-ratio: auto;
    transform: rotate(-1.5deg);
  }
  /* Gloss over the photo and its white border, as the homepage photo */
  .cs-hero .media::after {
    mix-blend-mode: screen;
    background: var(--gloss-photo);
  }
  .cs-hero .media > img {
    position: static;
    aspect-ratio: 4 / 5;
    background: var(--card);
  }
  /* A wide banner, whole in the polaroid: never cropped */
  .cs-hero .media > img.is-whole {
    aspect-ratio: auto;
    height: auto;
  }
  /* A very wide banner is too small whole: show its left part at 4:3
     (Op Jezelf: the name and the line) */
  .cs-hero .media > img.is-whole.is-focus-left {
    aspect-ratio: 4 / 3;
    object-fit: cover;
    object-position: left center;
  }
  /* A hero video, whole in the polaroid (Something Wicked, 16:9) */
  .cs-hero .media > video {
    position: static;
    display: block;
    height: auto;
    aspect-ratio: 16 / 9;
    background: var(--ink);
  }
  .cs-hero .tape {
    display: block;
    top: 18px; /* 32px padding - 14px */
    left: 50%;
    z-index: calc(var(--z-media) + 1); /* over the polaroid */
    width: 112px;
    height: 32px;
    transform: translateX(-50%) rotate(-4deg);
  }

  .cs-text {
    display: flex;
    flex-direction: column;
    gap: var(--sp-16);
    padding-block: var(--sp-64) var(--sp-40);
  }
  .cs-intro {
    gap: var(--sp-32);
    padding-block: var(--sp-32) var(--sp-40);
  }
  .cs-body {
    max-width: none;
  }
  .cs-title {
    font-size: 48px;
    line-height: 48px;
  }
  .cs-num {
    padding-top: 3px;
  }

  .wicked {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--sp-8);
    padding-block: var(--sp-48) var(--sp-64);
  }
  .wicked-note {
    display: inline-flex;
    align-self: flex-start; /* desktop centres it in its grid cell */
    align-items: flex-end;
    gap: 6px;
    width: auto;
    height: auto;
    justify-self: auto;
  }
  .wicked-note .hand {
    position: static;
    font-size: 24px;
    transform: rotate(-4deg);
    transform-origin: left center;
  }
  .wicked-note svg {
    position: static;
    flex: none;
    width: 44px;
    height: 25px;
    margin-bottom: -18px;
    transform: rotate(-110deg) scaleY(-1);
  }
  .wicked-line {
    margin-top: var(--sp-16);
  }
  .wicked--one .wicked-line {
    align-self: flex-start;
    margin-bottom: 0;
  }
  /* Narrow phones: a long line wraps instead of running off the screen */
  .wicked-line span {
    white-space: normal;
  }
  .wicked--after-media {
    padding-block: var(--sp-64) 0;
  }
  .wicked--between {
    padding-block: var(--sp-64);
  }

  .stats {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--sp-40);
    padding-block: var(--sp-56) 72px;
    text-align: center;
  }
  .stats li {
    align-items: center;
    gap: var(--sp-8);
  }

  /* Next up on the phone: label and All work on top, a big gap, then the
     name and a 4:3 preview */
  .next {
    min-height: 0;
  }
  .next-inner {
    grid-template-columns: 1fr auto;
    grid-template-rows: auto auto auto;
    padding-block: var(--sp-48) var(--sp-96);
  }
  .next-label {
    grid-column: 1;
    grid-row: 1;
    align-self: center;
    margin: 0;
  }
  .next-all {
    grid-column: 2;
    grid-row: 1;
    align-items: center;
    gap: 0.3em;
    margin: 0;
  }
  .next-all a {
    display: inline-flex;
    align-items: center;
    min-height: var(--target-link);
  }
  .next-title {
    grid-column: 1 / -1;
    grid-row: 2;
    margin-top: 192px;
  }
  .next-prev {
    grid-column: 1 / -1;
    grid-row: 3;
    margin-top: var(--sp-24);
    aspect-ratio: 4 / 3;
  }

  .case .site-footer {
    margin-top: 0;
  }
}