/* ==========================================================================
   work.css : case-studies page
   ========================================================================== */

/* --------------------------------------------------------------------------
   Page header
   -------------------------------------------------------------------------- */

.page-hero {
  padding-block: clamp(3.5rem, 9vw, 6.5rem) var(--s-8);
  border-bottom: 1px solid var(--border);
}

.page-hero__back {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-3);
  margin-bottom: var(--s-6);
  transition: color var(--dur-fast) var(--ease);
}

.page-hero__back svg { width: 15px; height: 15px; transition: transform var(--dur-fast) var(--ease); }
.page-hero__back:hover { color: var(--accent); }
.page-hero__back:hover svg { transform: translateX(-3px); }

.page-hero__title { margin-bottom: var(--s-5); max-width: 16ch; }

.page-hero__lede { margin-bottom: var(--s-7); }

/* --------------------------------------------------------------------------
   Filters
   -------------------------------------------------------------------------- */

/* The blur/border live on a full-bleed wrapper so the sticky bar reads as a
   band across the viewport, not a floating rectangle inside the container. */
.filters-bar {
  position: sticky;
  top: var(--nav-h);
  z-index: 60;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border-bottom: 1px solid var(--border);
}

.filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--s-2);
  padding-block: var(--s-5);
}

.filters__label {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-right: var(--s-3);
}

.filters button {
  padding: 0.42rem 0.9rem;
  border-radius: var(--r-full);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-2);
  font-size: var(--fs-xs);
  font-weight: 500;
  transition: color var(--dur-fast) var(--ease),
              border-color var(--dur-fast) var(--ease),
              background-color var(--dur-fast) var(--ease);
}

.filters button:hover { color: var(--text); border-color: var(--border-2); }

.filters button.is-active {
  background: var(--accent);
  border-color: transparent;
  color: var(--accent-ink);
}

.filters__count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-3);
}

/* --------------------------------------------------------------------------
   Case study
   -------------------------------------------------------------------------- */

.cases { display: grid; gap: var(--s-10); padding-block: var(--s-10); }

.case { scroll-margin-top: calc(var(--nav-h) + 5.5rem); }

.case[hidden] { display: none; }

.case__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--s-5);
  padding-bottom: var(--s-5);
  margin-bottom: var(--s-7);
  border-bottom: 1px solid var(--border);
}

.case__index {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.18em;
  color: var(--text-3);
  display: flex;
  align-items: center;
  gap: var(--s-3);
  flex-wrap: wrap;
  margin-bottom: var(--s-3);
}

.case__flag {
  padding: 0.22rem 0.6rem;
  border-radius: var(--r-full);
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
  letter-spacing: 0.14em;
}

/* The flagship gets more presence: accent rule under the header and a larger
   title, without breaking out of the page's rhythm. */
.case--flagship .case__head { border-bottom-color: var(--accent-line); }
.case--flagship .case__title { font-size: clamp(2rem, 4vw, 3.1rem); }
.case--flagship .case__kicker { font-size: var(--fs-body); color: var(--text-2); }

.case__title { font-size: clamp(1.75rem, 3.4vw, 2.6rem); margin-bottom: var(--s-3); }

.case__kicker { color: var(--text-2); font-size: var(--fs-sm); max-width: 52ch; }

.case__actions { display: flex; flex-wrap: wrap; gap: var(--s-3); }

.case__body { display: grid; gap: var(--s-8); align-items: start; }

@media (min-width: 1000px) {
  .case__body {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    gap: var(--s-9);
  }
}

/* Narrative blocks */
.case__story { display: grid; gap: var(--s-6); }

.block__label {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: var(--s-3);
  margin-bottom: var(--s-3);
}

.block__label::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}

.block p { color: var(--text-2); font-size: var(--fs-sm); }
.block p + p { margin-top: var(--s-3); }
.block strong { color: var(--text); font-weight: 600; }

.block__list { display: grid; gap: var(--s-3); }

.block__list li {
  position: relative;
  padding-left: var(--s-5);
  color: var(--text-2);
  font-size: var(--fs-sm);
  line-height: 1.65;
}

.block__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 6px;
  height: 1px;
  background: var(--accent);
}

.case__stack { padding-top: var(--s-5); border-top: 1px solid var(--border); }

.case__stack-label {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: var(--s-4);
}

/* --------------------------------------------------------------------------
   Carousel
   -------------------------------------------------------------------------- */

.shots { position: sticky; top: calc(var(--nav-h) + 5.5rem); }

@media (max-width: 999px) { .shots { position: static; } }

.shots__frame {
  border-radius: var(--r);
  border: 1px solid var(--border-2);
  background: var(--surface-2);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.shots__bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 9px var(--s-4);
  background: var(--surface-3);
  border-bottom: 1px solid var(--border);
}

.shots__dot { width: 9px; height: 9px; border-radius: 50%; background: var(--border-3); }

.shots__name {
  margin-left: var(--s-3);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: var(--text-3);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.shots__stage {
  position: relative;
  aspect-ratio: 16 / 10;
  background: var(--bg-2);
}

/* Overlay/app screenshots vary wildly in aspect ratio — letterbox them on a
   tinted stage instead of cropping the window out of its own screenshot. */
.shots__stage--contain {
  aspect-ratio: 4 / 3;
  background:
    radial-gradient(120% 90% at 50% 0%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 70%),
    var(--surface-2);
}

.shots__stage--contain .shots__slide { padding: var(--s-5); }

.shots__stage--contain .shots__slide img {
  object-fit: contain;
  object-position: center;
  border-radius: var(--r-sm);
}

.shots__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.55s var(--ease);
  cursor: zoom-in;
}

.shots__slide.is-active { opacity: 1; visibility: visible; }

.shots__slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.shots__controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
  padding: var(--s-3) var(--s-4);
  border-top: 1px solid var(--border);
  background: var(--surface);
}

.shots__btn {
  width: 32px; height: 32px;
  display: grid;
  place-items: center;
  border-radius: var(--r-xs);
  border: 1px solid var(--border);
  color: var(--text-2);
  transition: color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}

.shots__btn:hover { color: var(--accent); border-color: var(--accent-line); }
.shots__btn svg { width: 15px; height: 15px; }

.shots__dots { display: flex; gap: var(--s-2); }

.shots__indicator {
  width: 22px;
  height: 3px;
  border-radius: var(--r-full);
  background: var(--border-3);
  transition: background-color var(--dur-fast) var(--ease), width var(--dur-fast) var(--ease);
}

.shots__indicator.is-active { background: var(--accent); width: 34px; }

.shots__hint {
  margin-top: var(--s-3);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  color: var(--text-3);
  text-align: center;
}

/* --------------------------------------------------------------------------
   Research case (no screenshots)
   -------------------------------------------------------------------------- */

.research-panel {
  padding: var(--s-7);
  display: grid;
  gap: var(--s-5);
  border-radius: var(--r);
  border: 1px solid var(--border);
  background: linear-gradient(160deg, var(--surface), var(--bg-2));
}

.research-panel__logo {
  width: 64px; height: 64px;
  border-radius: var(--r-sm);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #fff;
  padding: 5px;
}

.research-panel__logo img { width: 100%; height: 100%; object-fit: contain; }

.research-panel dl { display: grid; gap: var(--s-4); }

.research-panel dt {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 2px;
}

.research-panel dd { font-size: var(--fs-sm); margin: 0; }

/* --------------------------------------------------------------------------
   Closing CTA
   -------------------------------------------------------------------------- */

.closer {
  text-align: center;
  padding-block: var(--s-10);
  border-top: 1px solid var(--border);
}

.closer h2 { margin-bottom: var(--s-4); }
.closer p { color: var(--text-2); margin-inline: auto; margin-bottom: var(--s-7); max-width: 44ch; }
.closer__actions { display: flex; flex-wrap: wrap; gap: var(--s-3); justify-content: center; }