/* ============================================================
   Case study page styles — inherits the home system via ../styles.css
   ============================================================ */

.case { position: relative; z-index: 1; }

/* Work index hero */
.work-hero { max-width: var(--maxw); margin: 0 auto; padding: clamp(7rem,16vh,11rem) var(--pad) clamp(2rem,5vw,3rem); }
.work-hero__title { font-family: var(--serif); font-weight: 400; font-size: var(--display); line-height: 0.9; letter-spacing: -0.03em; margin: clamp(1.5rem,4vw,2.5rem) 0 1rem; }
.work-hero__lead { font-family: var(--serif); font-size: var(--step-1); color: var(--ink-60); max-width: 36ch; }

/* Hero */
.case-hero { max-width: var(--maxw); margin: 0 auto; padding: clamp(7rem,16vh,11rem) var(--pad) clamp(2rem,5vw,3.5rem); }
.case-hero__back { display: inline-flex; align-items: center; gap: 0.5rem; min-height: 40px; padding: 0.4rem 0; font-size: var(--step--1); color: var(--ink-60); margin-bottom: clamp(2rem,5vw,3rem); transition: color .3s var(--ease); }
.case-hero__back:hover { color: var(--ink); }
.case-hero__back i { color: var(--accent); font-style: normal; }
.case-hero__title { font-family: var(--serif); font-weight: 400; font-size: var(--display); line-height: 0.9; letter-spacing: -0.03em; margin-bottom: clamp(1rem,3vw,1.8rem); }
.case-hero__lead { font-family: var(--serif); font-size: var(--step-2); line-height: 1.2; color: var(--ink-80); max-width: 24ch; }

/* Meta strip */
.case-meta { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--pad) clamp(3rem,7vw,5rem); display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; border-bottom: 1px solid var(--ink-12); }
.case-meta::after { content: ""; }
.case-meta__item .h { display: block; font-family: var(--mono); font-size: 0.74rem; color: var(--ink-40); margin-bottom: 0.5rem; }
.case-meta__item p { font-size: var(--step-0); color: var(--ink); }
@media (max-width: 720px) { .case-meta { grid-template-columns: repeat(2,1fr); } }

/* Overview */
.case-overview { max-width: var(--maxw); margin: 0 auto; padding: clamp(3rem,7vw,5rem) var(--pad); display: grid; grid-template-columns: 0.5fr 1fr; gap: clamp(1.5rem,4vw,4rem); }
.case-overview__label { font-family: var(--mono); font-size: var(--step--1); color: var(--ink-40); }
.case-overview__body p { font-size: var(--step-1); font-family: var(--serif); line-height: 1.4; color: var(--ink-80); margin-bottom: 1.2rem; }
.case-overview__body p:last-child { margin-bottom: 0; }
@media (max-width: 720px) { .case-overview { grid-template-columns: 1fr; gap: 1rem; } }

/* Gallery */
.case-gallery { max-width: 1100px; margin: 0 auto; padding: clamp(1rem,3vw,2rem) var(--pad) clamp(4rem,9vw,7rem); display: flex; flex-direction: column; gap: clamp(1rem,2.5vw,2rem); }
.case-gallery figure { margin: 0; }
.case-gallery img { width: 100%; height: auto; border-radius: 12px; border: 1px solid var(--ink-12); display: block; }
.case-gallery .pair { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(1rem,2.5vw,2rem); }
@media (max-width: 640px) { .case-gallery .pair { grid-template-columns: 1fr; } }

/* Next project */
.case-next { max-width: var(--maxw); margin: 0 auto; padding: clamp(3rem,7vw,5rem) var(--pad) clamp(5rem,10vw,8rem); border-top: 1px solid var(--ink-12); }
.case-next a { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.case-next__label { font-family: var(--mono); font-size: var(--step--1); color: var(--ink-40); display: block; margin-bottom: 0.8rem; }
.case-next__title { font-family: var(--serif); font-size: var(--step-3); line-height: 1; letter-spacing: -0.02em; transition: color .3s var(--ease); }
.case-next a:hover .case-next__title { color: var(--accent); }
.case-next__arrow { font-size: var(--step-2); color: var(--ink-40); transition: transform .4s var(--ease), color .4s var(--ease); }
.case-next a:hover .case-next__arrow { transform: translate(6px,-6px); color: var(--accent); }

/* ---------- Floating glass image viewer ---------- */
.viewer {
  position: fixed; inset: 0; z-index: 9995;
  display: grid; place-items: center; padding: clamp(1rem, 4vw, 3rem);
  background: rgba(12, 10, 9, 0.55);
  backdrop-filter: blur(10px) saturate(120%);
  -webkit-backdrop-filter: blur(10px) saturate(120%);
  opacity: 0; visibility: hidden;
  transition: opacity .4s var(--ease), visibility .4s var(--ease);
}
.viewer.is-open { opacity: 1; visibility: visible; }

.viewer__panel {
  position: relative; z-index: 1;
  width: min(1000px, 100%); max-height: 90vh;
  display: flex; flex-direction: column;
  border-radius: 20px; overflow: hidden;
  transform: translateY(24px) scale(0.97);
  transition: transform .5s var(--ease);
}
.viewer.is-open .viewer__panel { transform: translateY(0) scale(1); }

.viewer__bar {
  display: flex; align-items: center; gap: 1rem;
  padding: 0.8rem 1rem; border-bottom: 1px solid var(--glass-stroke);
  flex: 0 0 auto;
}
.viewer__back {
  display: inline-flex; align-items: center; gap: 0.45rem;
  font-size: var(--step--1); color: var(--ink);
  padding: 0.5rem 0.9rem; border-radius: 100px; border: 1px solid var(--glass-stroke);
  transition: background .3s var(--ease), border-color .3s var(--ease);
}
.viewer__back i { color: var(--accent); font-style: normal; }
.viewer__back:hover { background: rgba(255,255,255,0.08); border-color: var(--ink-40); }
.viewer__cap { margin-right: auto; font-size: var(--step--1); color: var(--ink-60); }
.viewer__close {
  width: 36px; height: 36px; border-radius: 50%; flex: 0 0 auto;
  display: grid; place-items: center; font-size: 0.9rem; color: var(--ink);
  border: 1px solid var(--glass-stroke); transition: background .3s var(--ease), transform .3s var(--ease);
}
.viewer__close:hover { background: rgba(255,255,255,0.08); transform: rotate(90deg); }

.viewer__stage {
  flex: 1 1 auto; min-height: 0; overflow: auto;
  display: grid; place-items: center; padding: clamp(1rem, 2.5vw, 1.8rem);
}
.viewer__stage img {
  max-width: 100%; max-height: calc(90vh - 120px);
  width: auto; height: auto; border-radius: 10px; display: block;
  box-shadow: 0 20px 60px rgba(0,0,0,0.45);
  opacity: 0; transform: scale(0.98); transition: opacity .5s var(--ease), transform .5s var(--ease);
}
.viewer__stage img.is-ready { opacity: 1; transform: scale(1); }

@media (prefers-reduced-motion: reduce) {
  .viewer, .viewer__panel, .viewer__stage img { transition: none !important; }
}