:root {
  --overview-focus:var(--focus-color,#51d9ce);
}

.viewer-actions {
  position:fixed;
  top:calc((100vh - var(--frame-height)) / 2 + 12px);
  right:calc((100vw - var(--frame-width)) / 2 + 18px);
  z-index:40;
  display:flex;
  align-items:center;
  gap:8px;
  transition:opacity 180ms ease;
}

.viewer-actions .back-link,
.viewer-actions .overview-button {
  position:static;
  inset:auto;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:64px;
  height:36px;
  margin:0;
  padding:0 15px;
  border:1px solid rgba(255,255,255,.26);
  border-radius:999px;
  color:rgba(255,255,255,.9);
  background:rgba(8,8,10,.62);
  box-shadow:0 8px 28px rgba(0,0,0,.24);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  font-size:12px;
  font-weight:600;
  line-height:1;
  letter-spacing:.08em;
  text-decoration:none;
  white-space:nowrap;
  cursor:pointer;
  transform:none;
  transition:background 180ms ease,border-color 180ms ease,transform 180ms ease;
}

.viewer-actions .back-link:hover,
.viewer-actions .overview-button:hover {
  border-color:rgba(255,255,255,.48);
  background:rgba(18,18,21,.88);
  transform:translateY(-1px);
}

.viewer-actions .back-link:focus-visible,
.viewer-actions .overview-button:focus-visible,
.case-overview__close:focus-visible,
.case-overview-card:focus-visible {
  outline:2px solid var(--overview-focus);
  outline-offset:3px;
}

html.is-overview .viewer-actions {
  opacity:0;
  pointer-events:none;
}

.case-overview {
  position:fixed;
  inset:0;
  z-index:100;
  overflow:auto;
  overscroll-behavior:contain;
  touch-action:pan-x pan-y;
  color:rgba(255,255,255,.92);
  background:
    radial-gradient(circle at 50% -12%,rgba(255,255,255,.07),transparent 36%),
    #0b0b0d;
  opacity:0;
  visibility:hidden;
  pointer-events:none;
  transition:opacity 220ms ease,visibility 220ms step-end;
}

.case-overview.is-open {
  opacity:1;
  visibility:visible;
  pointer-events:auto;
  transition:opacity 220ms ease,visibility 0ms step-start;
}

.case-overview__inner {
  width:min(1680px,calc(100% - 72px));
  margin:0 auto;
  padding:0 0 72px;
}

.case-overview__header {
  position:sticky;
  top:0;
  z-index:2;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:72px;
  margin-bottom:16px;
  padding:14px 0 8px;
  background:linear-gradient(180deg,#0b0b0d 72%,rgba(11,11,13,0));
}

.case-overview__title {
  margin:0;
  color:rgba(255,255,255,.52);
  font-size:14px;
  font-weight:600;
  letter-spacing:.2em;
}

.case-overview__close {
  flex:0 0 auto;
  height:38px;
  padding:0 18px;
  border:1px solid rgba(255,255,255,.22);
  border-radius:999px;
  color:rgba(255,255,255,.78);
  background:rgba(255,255,255,.06);
  font-size:13px;
  font-weight:550;
  letter-spacing:.06em;
  cursor:pointer;
  transition:background 180ms ease,border-color 180ms ease;
}

.case-overview__close:hover {
  border-color:rgba(255,255,255,.4);
  background:rgba(255,255,255,.12);
}

.case-overview__grid {
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:28px 22px;
}

.case-overview-card {
  position:relative;
  display:block;
  width:100%;
  aspect-ratio:16/9;
  overflow:hidden;
  padding:0;
  border:1px solid rgba(255,255,255,.11);
  border-radius:10px;
  color:inherit;
  background:#050505;
  box-shadow:0 12px 26px rgba(0,0,0,.42);
  cursor:pointer;
  transform:translateZ(0);
  transition:transform 180ms ease,box-shadow 180ms ease,border-color 180ms ease;
}

.case-overview-card:hover {
  border-color:color-mix(in srgb,var(--overview-focus) 76%,transparent);
  box-shadow:0 16px 32px rgba(0,0,0,.62);
  transform:translateY(-3px);
}

.case-overview-card.is-current {
  border-color:var(--overview-focus);
  box-shadow:0 0 0 2px color-mix(in srgb,var(--overview-focus) 28%,transparent),0 14px 30px rgba(0,0,0,.58);
}

.case-overview-card__thumbnail {
  display:block;
  width:100%;
  height:100%;
  object-fit:contain;
  pointer-events:none;
}

.case-overview-card__number {
  position:absolute;
  left:10px;
  bottom:9px;
  min-width:26px;
  padding:4px 7px;
  border-radius:6px;
  color:rgba(255,255,255,.9);
  background:rgba(0,0,0,.58);
  font:600 12px/1 Georgia,serif;
  text-align:center;
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  pointer-events:none;
}

@media (max-width:1200px) {
  .case-overview__grid { grid-template-columns:repeat(3,minmax(0,1fr)); }
}

@media (max-width:820px) {
  .case-overview__inner { width:min(100% - 36px,720px); }
  .case-overview__grid { grid-template-columns:repeat(2,minmax(0,1fr)); gap:20px 16px; }
  .case-overview__title { font-size:12px; letter-spacing:.12em; }
}

@media (max-width:520px) {
  .viewer-actions {
    top:calc((100vh - var(--frame-height)) / 2 + 8px);
    right:calc((100vw - var(--frame-width)) / 2 + 8px);
    gap:6px;
  }
  .viewer-actions .back-link,
  .viewer-actions .overview-button {
    min-width:54px;
    height:32px;
    padding:0 11px;
    font-size:11px;
  }
  .case-overview__inner { width:calc(100% - 28px); padding-bottom:36px; }
  .case-overview__header { min-height:62px; margin-bottom:10px; }
  .case-overview__title { max-width:210px; line-height:1.5; }
  .case-overview__close { height:34px; padding:0 13px; font-size:12px; }
  .case-overview__grid { grid-template-columns:1fr; gap:18px; }
}

@media (prefers-reduced-motion:reduce) {
  .viewer-actions,
  .viewer-actions .back-link,
  .viewer-actions .overview-button,
  .case-overview,
  .case-overview-card { transition-duration:1ms; }
}