:root {
  --gap: 8px;
  --background: #0d0d0d;
  --tile: #151515;
  --text: #ededed;
  --muted: #a0a0a0;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font: 14px/1.5 system-ui, sans-serif;
}

main {
  padding: max(var(--gap), env(safe-area-inset-top))
           max(var(--gap), env(safe-area-inset-right))
           var(--gap)
           max(var(--gap), env(safe-area-inset-left));
}

.batch {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap);
}

.batch + .batch { margin-top: var(--gap); }

.card {
  display: block;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--tile);
  border-radius: 2px;
  touch-action: manipulation;
}

.card:focus-visible, button:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: -2px;
}

.card:focus-visible { color: var(--text); }

.contact-card { position: relative; }

.contact-label {
  position: absolute;
  inset-inline-end: 6px;
  inset-block-end: 6px;
  padding: 2px 6px;
  border-radius: 3px;
  background: rgba(0, 0, 0, .8);
  color: #fff;
  font-size: 11px;
}

.t {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (min-width: 520px) {
  .batch { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 920px) {
  .batch {
    grid-template-columns: repeat(var(--cols, 10), minmax(0, 1fr));
    grid-auto-rows: var(--tile-height, max(1px, calc((100vh - 48px) / 5)));
  }

  .card { aspect-ratio: auto; }
}

.load-area {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 64px;
  padding: 12px;
  text-align: center;
  color: var(--muted);
}

#load-status:empty { display: none; }

button {
  color: inherit;
  font: inherit;
  cursor: pointer;
  touch-action: manipulation;
}

button:disabled {
  cursor: default;
  opacity: .38;
}

.text-button {
  min-height: 44px;
  padding: 8px 14px;
  border: 1px solid #414141;
  border-radius: 4px;
  background: #171717;
  color: var(--text);
}

.empty {
  margin: 0;
  padding: 20vh 12px;
  text-align: center;
  color: var(--muted);
}

.footer {
  padding: 20px 12px max(32px, env(safe-area-inset-bottom));
  text-align: center;
  color: var(--muted);
  font-size: 12px;
}

.viewer {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  height: 100dvh;
  max-width: none;
  max-height: none;
  margin: 0;
  padding: max(4px, env(safe-area-inset-top))
           max(var(--gap), env(safe-area-inset-right))
           max(4px, env(safe-area-inset-bottom))
           max(var(--gap), env(safe-area-inset-left));
  border: 0;
  overflow: hidden;
  background: #080808;
  color: var(--text);
}

.viewer:not([open]) { display: none; }

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

.viewer::backdrop { background: #080808; }
.viewer-top { display: flex; justify-content: flex-end; }
.viewer-stage { position: relative; min-width: 0; min-height: 0; }

.viewer-strip {
  display: flex;
  height: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  touch-action: pan-x pinch-zoom;
}

.viewer-strip::-webkit-scrollbar { display: none; }

.viewer-slide {
  position: relative;
  flex: 0 0 100%;
  min-width: 0;
  scroll-snap-align: start;
  scroll-snap-stop: always;
}

.viewer-photo, .viewer-preview {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  user-select: none;
}

.viewer-photo { visibility: hidden; }
.viewer-photo.ready { visibility: visible; }

.viewer-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
}

.viewer-count {
  min-width: 7ch;
  color: var(--muted);
  text-align: center;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.icon-button {
  display: grid;
  width: 44px;
  height: 44px;
  padding: 0;
  place-items: center;
  border: 0;
  border-radius: 4px;
  background: transparent;
  font-size: 26px;
  line-height: 1;
}

@media (hover: hover) {
  .icon-button:hover:enabled { background: #222; }
}

.viewer-feedback {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  padding: 12px;
  text-align: center;
  color: var(--muted);
  pointer-events: none;
}

.viewer-feedback button { pointer-events: auto; }

.photo-error {
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  margin: 0;
  padding: 8px;
  background: #080808;
  color: var(--muted);
  text-align: center;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}