:root {
  --case-viewer-bg: rgba(5, 7, 8, 0.985);
  --case-viewer-ink: #e7eae8;
  --case-viewer-muted: rgba(231, 234, 232, 0.58);
  --case-viewer-line: rgba(231, 234, 232, 0.16);
  --case-viewer-control: rgba(16, 18, 18, 0.88);
}

html.unified-viewer-open {
  overflow: hidden !important;
  overscroll-behavior: none;
}

body.unified-viewer-lock {
  position: fixed !important;
  inset-inline: 0;
  width: 100% !important;
  overflow: hidden !important;
  overscroll-behavior: none;
}

dialog#viewer,
.viewer[role="dialog"] {
  border: 0 !important;
  outline: 0 !important;
  padding: 0 !important;
  overflow: hidden !important;
  overscroll-behavior: none;
  color: var(--case-viewer-ink) !important;
  background: var(--case-viewer-bg) !important;
}

dialog#viewer[open] {
  display: grid;
  grid-template-rows: minmax(0, 1fr);
}

dialog#viewer::backdrop {
  background: rgba(5, 7, 8, 0.98) !important;
}

dialog#viewer .viewer-stage {
  position: relative !important;
  display: grid !important;
  width: 100vw !important;
  height: 100dvh !important;
  padding:
    max(88px, env(safe-area-inset-top))
    max(96px, env(safe-area-inset-right))
    max(104px, env(safe-area-inset-bottom))
    max(96px, env(safe-area-inset-left)) !important;
  overflow: hidden !important;
  place-items: center !important;
}

dialog#viewer .viewer-stage img,
.viewer[role="dialog"] .viewer-stage img {
  display: block !important;
  width: auto !important;
  max-width: min(100%, calc(100vw - 192px)) !important;
  height: auto !important;
  max-height: calc(100dvh - 208px) !important;
  object-fit: contain !important;
  object-position: center !important;
}

/* Threshold Zero mixes 960 px archive frames with 1600 px curated frames.
   A stable inner canvas prevents native resolution from changing the apparent
   viewer size while preserving every image with contain. */
.viewer[role="dialog"] .viewer-canvas {
  display: grid;
  width: 100% !important;
  height: 100% !important;
  min-width: 0;
  min-height: 0;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr);
  overflow: hidden;
  place-items: center;
}

.viewer[role="dialog"] .viewer-canvas img {
  width: 100% !important;
  max-width: 100% !important;
  height: 100% !important;
  max-height: 100% !important;
  min-width: 0;
  min-height: 0;
}

.viewer[role="dialog"] {
  grid-template-rows: auto minmax(0, 1fr) auto !important;
  gap: 12px !important;
  padding:
    max(18px, env(safe-area-inset-top))
    max(88px, env(safe-area-inset-right))
    max(18px, env(safe-area-inset-bottom))
    max(88px, env(safe-area-inset-left)) !important;
}

.viewer[role="dialog"] .viewer-head,
.viewer[role="dialog"] .viewer-controls {
  width: min(100%, 1560px) !important;
}

.viewer[role="dialog"] .viewer-stage {
  min-width: 0;
  min-height: 0;
  padding:
    clamp(8px, 1vh, 14px)
    clamp(10px, 1.2vw, 28px)
    max(88px, env(safe-area-inset-bottom)) !important;
  overflow: hidden !important;
}

.viewer[role="dialog"] .viewer-controls {
  min-height: 54px;
}

dialog#viewer .viewer-close,
dialog#viewer .viewer-arrow,
.viewer[role="dialog"] .viewer-close,
.viewer[role="dialog"] .viewer-nav {
  z-index: 4 !important;
  display: grid !important;
  width: 48px !important;
  min-width: 48px !important;
  height: 48px !important;
  min-height: 48px !important;
  padding: 0 !important;
  border: 1px solid var(--case-viewer-line) !important;
  border-radius: 50% !important;
  color: var(--case-viewer-ink) !important;
  background: var(--case-viewer-control) !important;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(12px);
  place-items: center !important;
  cursor: pointer;
  transition: color 180ms ease-out, background-color 180ms ease-out, border-color 180ms ease-out !important;
}

dialog#viewer .viewer-close:hover,
dialog#viewer .viewer-close:focus-visible,
dialog#viewer .viewer-arrow:hover,
dialog#viewer .viewer-arrow:focus-visible,
.viewer[role="dialog"] .viewer-close:hover,
.viewer[role="dialog"] .viewer-close:focus-visible,
.viewer[role="dialog"] .viewer-nav:hover,
.viewer[role="dialog"] .viewer-nav:focus-visible {
  color: #101211 !important;
  background: var(--case-viewer-ink) !important;
  border-color: var(--case-viewer-ink) !important;
  outline: none;
}

dialog#viewer .viewer-close,
.viewer[role="dialog"] .viewer-close {
  position: fixed !important;
  top: max(18px, env(safe-area-inset-top)) !important;
  right: max(18px, env(safe-area-inset-right)) !important;
}

.viewer[role="dialog"] .viewer-close::before,
.viewer[role="dialog"] .viewer-close::after {
  display: none !important;
}

dialog#viewer .viewer-arrow,
.viewer[role="dialog"] .viewer-nav {
  position: fixed !important;
  top: 50% !important;
  bottom: auto !important;
  transform: translateY(-50%) !important;
}

dialog#viewer .viewer-prev,
.viewer[role="dialog"] .viewer-prev {
  left: max(18px, env(safe-area-inset-left)) !important;
}

dialog#viewer .viewer-next,
.viewer[role="dialog"] .viewer-next {
  right: max(18px, env(safe-area-inset-right)) !important;
}

dialog#viewer .viewer-close svg,
dialog#viewer .viewer-arrow svg,
.viewer[role="dialog"] .viewer-close svg,
.viewer[role="dialog"] .viewer-nav svg {
  width: 18px;
  height: 18px;
  pointer-events: none;
}

dialog#viewer .viewer-caption,
.viewer[role="dialog"] .viewer-count {
  position: fixed !important;
  left: 50% !important;
  bottom: max(24px, env(safe-area-inset-bottom)) !important;
  z-index: 3;
  color: var(--case-viewer-muted) !important;
  font-size: 9px !important;
  letter-spacing: 0.09em !important;
  white-space: nowrap;
  transform: translateX(-50%) !important;
}

@media (max-width: 700px) {
  dialog#viewer .viewer-stage {
    padding:
      max(68px, env(safe-area-inset-top))
      max(12px, env(safe-area-inset-right))
      max(92px, env(safe-area-inset-bottom))
      max(12px, env(safe-area-inset-left)) !important;
  }

  .viewer[role="dialog"] {
    padding:
      max(14px, env(safe-area-inset-top))
      max(12px, env(safe-area-inset-right))
      max(76px, env(safe-area-inset-bottom))
      max(12px, env(safe-area-inset-left)) !important;
  }

  dialog#viewer .viewer-stage img {
    width: auto !important;
    max-width: 100% !important;
    height: auto !important;
    max-height: calc(100dvh - 174px) !important;
  }

  .viewer[role="dialog"] .viewer-stage img {
    max-width: none !important;
    max-height: none !important;
  }

  .viewer[role="dialog"] .viewer-canvas img {
    width: 100% !important;
    max-width: 100% !important;
    height: 100% !important;
    max-height: 100% !important;
  }

  .viewer[role="dialog"] .viewer-stage {
    padding: 6px 0 max(70px, env(safe-area-inset-bottom)) !important;
  }

  dialog#viewer .viewer-arrow,
  .viewer[role="dialog"] .viewer-nav {
    top: auto !important;
    bottom: max(16px, env(safe-area-inset-bottom)) !important;
    transform: none !important;
  }

  dialog#viewer .viewer-prev,
  .viewer[role="dialog"] .viewer-prev {
    left: max(16px, env(safe-area-inset-left)) !important;
  }

  dialog#viewer .viewer-next,
  .viewer[role="dialog"] .viewer-next {
    right: max(16px, env(safe-area-inset-right)) !important;
  }

  dialog#viewer .viewer-caption,
  .viewer[role="dialog"] .viewer-count {
    bottom: max(34px, env(safe-area-inset-bottom)) !important;
  }

  .viewer[role="dialog"] .viewer-title {
    max-width: calc(100vw - 92px);
  }
}

@media (prefers-reduced-motion: reduce) {
  dialog#viewer .viewer-close,
  dialog#viewer .viewer-arrow,
  .viewer[role="dialog"] .viewer-close,
  .viewer[role="dialog"] .viewer-nav {
    transition: none !important;
  }
}