/* ==========================================================================
   case.css — individual project (case study) pages.
   Layout cloned from bttrprojects.com/project/*: full-bleed 100svh hero with
   gradient overlay and oversized uppercase title, sticky meta sidebar,
   hairline-sectioned full-height images, scroll reveals, closing CTA.
   Colors and type are mapped to this site's tokens; durations follow the
   site-wide ~15% slower scale.
   ========================================================================== */

/* ---------- Header sits transparent + light over the hero ---------- */
.case-page .site-header:not(.is-scrolled) {
  background: transparent;
  backdrop-filter: none;
  border-bottom-color: transparent;
}
.case-page .site-header:not(.is-scrolled) .site-header__logo,
.case-page .site-header:not(.is-scrolled) .site-nav__link {
  color: #fff;
}
.case-page .site-header:not(.is-scrolled) .btn--cv {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.4);
}

/* ---------- Hero ---------- */
.case-hero {
  position: relative;
  height: 100svh;
  overflow: hidden;
}
.case-hero__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-color: #1c2530;
  transform: scale(1.05);
  transition: transform 9s var(--ease-out);
}
.case-hero__bg.is-loaded { transform: scale(1); }
.case-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(25, 22, 19, 0.1) 0%, rgba(25, 22, 19, 0.68) 100%);
}
.case-hero__content {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 0 5vw 3.5rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--s-6);
  color: #fff;
}
.case-hero__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(3rem, 8.5vw, 7.5rem);
  line-height: 0.92;
  text-transform: uppercase;
  letter-spacing: -0.03em;
  max-width: 14ch;
}
.case-hero__meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-bottom: 8px;
  text-align: right;
}
.case-hero__meta span {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.6);
  white-space: nowrap;
}

/* ---------- Two-column body ---------- */
.case-body {
  display: flex;
  align-items: flex-start;
  border-top: 1px solid var(--line);
}

.case-sidebar {
  position: sticky;
  top: var(--header-h-scrolled);
  width: 18.75rem;
  flex-shrink: 0;
  min-height: calc(100svh - var(--header-h-scrolled));
  border-right: 1px solid var(--line);
  padding: var(--s-6) var(--s-5);
}
.case__back {
  display: inline-block;
  margin-bottom: var(--s-6);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink-70);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-out);
}
.case__back:hover { color: var(--ink); }

.case-meta {
  display: flex;
  flex-direction: column;
  gap: var(--s-4);
  padding-bottom: var(--s-5);
  border-bottom: 1px solid var(--line);
  margin-bottom: var(--s-5);
}
.case-meta__label {
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-50);
  margin-bottom: 2px;
}
.case-meta__value {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--ink);
}
.case-desc {
  font-size: 0.8125rem;
  line-height: 1.75;
  color: var(--ink-70);
}

/* ---------- Content panel ---------- */
.case-panel {
  flex: 1;
  min-width: 0;
}
.case-figure {
  margin: 0;
  border-bottom: 1px solid var(--line);
}
.case-figure img {
  display: block;
  width: 100%;
  height: 85vh;
  object-fit: cover;
}

/* ---------- Prev / next ---------- */
.case-nav {
  display: flex;
  justify-content: space-between;
  gap: var(--s-4);
  padding: var(--s-6) var(--s-6);
  border-bottom: 1px solid var(--line);
}
.case__nav-link {
  display: grid;
  gap: 2px;
  text-decoration: none;
  color: var(--ink);
}
.case__nav-link span {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-50);
}
.case__nav-link strong {
  font-family: var(--font-display);
  font-weight: 600;
  transition: color var(--dur-fast) var(--ease-out);
}
.case__nav-link:hover strong { color: var(--accent); }
.case__nav-link--next { text-align: right; margin-left: auto; }

/* ---------- Closing CTA ---------- */
.case-cta {
  padding: clamp(6rem, 12vw, 10rem) var(--s-6);
  text-align: center;
}
.case-cta h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.5rem, 6vw, 5.5rem);
  line-height: 0.95;
  text-transform: uppercase;
  letter-spacing: -0.03em;
  margin-bottom: var(--s-6);
}
.case-cta__link {
  display: inline-block;
  padding: 1rem 2.75rem;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink);
  border: 1px solid var(--ink-30);
  border-radius: 100px;
  transition:
    background-color var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out);
}
.case-cta__link:hover {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

/* ---------- Scroll reveals (added by project.js, so no-JS shows all) ---------- */
.c-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity 805ms var(--ease-out),
    transform 805ms var(--ease-out);
}
.c-reveal.is-inview {
  opacity: 1;
  transform: none;
}

/* ---------- Not-found ---------- */
.case-missing {
  padding: calc(var(--header-h) + var(--s-8)) var(--gutter) var(--s-9);
  max-width: var(--container);
  margin-inline: auto;
}
.case-missing h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.25rem);
  letter-spacing: -0.02em;
  margin-block: var(--s-3) var(--s-3);
}
.case-missing p { color: var(--ink-70); margin-bottom: var(--s-5); }

/* ---------- Responsive ---------- */
@media (max-width: 64em) {
  .case-body { flex-direction: column; }
  .case-sidebar {
    position: static;
    width: 100%;
    min-height: 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .case-figure img { height: auto; max-height: 70vh; }
  .case-nav { padding-inline: var(--s-4); }
}
@media (max-width: 40em) {
  .case-hero__content {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--s-4);
    padding-bottom: var(--s-6);
  }
  .case-hero__meta { text-align: left; }
  .case-hero__meta span { white-space: normal; }
}