/**
 * PhotoXED Photo Grid + Footer (per spec)
 * Every photo has: checkbox | owner-only delete | download
 */

.px-photo-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-3);
  padding: var(--sp-3);
}

@media (min-width: 768px) {
  .px-photo-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-4);
  }

  /* Expanded labels on iPad */
  .px-photo-viewer .px-viewer-footer .btn-label,
  .px-photo-viewer .px-viewer-footer .check-label {
    display: inline;
  }

  .px-photo-viewer .px-viewer-footer button {
    padding: 6px 14px;
    min-width: auto;
  }
}

.px-photo-card {
  position: relative;
  background: var(--bg-elev);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur) var(--ease);
}

.px-photo-card.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(167, 139, 250, 0.25);
}

.px-photo-card.saved {
  opacity: 0.72;
  border-color: rgba(107, 203, 119, 0.45);
  box-shadow: none;
}

.px-photo-card.saved .px-photo-footer label {
  opacity: 0.55;
  pointer-events: none;
}

.px-photo-card img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  display: block;
}

.px-photo-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px;
  background: rgba(10,10,18,0.85);
  font-size: 13px;
}

.px-photo-footer .left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.px-photo-footer label {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--tx2);
  font-weight: 500;
}

.px-photo-footer .delete {
  color: var(--danger);
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 6px;
  display: none; /* shown via JS only for owner */
}

.px-photo-footer .delete.visible {
  display: inline-block;
}

.px-photo-card .px-photo-footer button {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 6px;
  background: rgba(255,255,255,0.06);
  color: var(--tx);
}

/* Full screen photo viewer — motion synced to message sheet (--dur-slow / --ease) */
.px-photo-viewer {
  --viewer-dur: var(--dur-slow);
  --viewer-ease: var(--ease);
  position: fixed;
  inset: 0;
  background: #000;
  z-index: 5000;
  display: none;
  flex-direction: column;
  opacity: 0;
  pointer-events: none;
}

.px-photo-viewer.open {
  display: flex;
  pointer-events: auto;
  animation: pxViewerEnter var(--viewer-dur) var(--viewer-ease) forwards;
}

.px-photo-viewer.closing {
  display: flex;
  animation: pxViewerDismiss var(--viewer-dur) var(--viewer-ease) forwards;
  pointer-events: none;
}

.px-photo-viewer-stage {
  flex: 1 1 auto;
  min-height: 0;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  overflow: hidden;
}

.px-photo-viewer-stage img:not([src]) {
  display: none;
}

.px-photo-viewer-stage img {
  position: absolute;
  max-width: 100vw;
  max-height: 100%;
  width: auto;
  object-fit: contain;
  user-select: none;
  opacity: 0;
  transform: translateX(0) scale(1);
  transition:
    transform var(--dur-slow) var(--ease),
    opacity var(--dur-slow) var(--ease);
  pointer-events: none;
}

.px-photo-viewer-stage img.is-active {
  opacity: 1;
  pointer-events: auto;
}

.px-photo-viewer-stage img.is-opening {
  animation: pxViewerPhotoIn var(--viewer-dur) var(--viewer-ease) forwards;
}

.px-photo-viewer-stage img.leave-left {
  transform: translateX(-32%);
  opacity: 0;
}

.px-photo-viewer-stage img.leave-right {
  transform: translateX(32%);
  opacity: 0;
}

.px-photo-viewer-stage img.enter-left {
  transform: translateX(-32%);
}

.px-photo-viewer-stage img.enter-right {
  transform: translateX(32%);
}

@keyframes pxViewerEnter {
  0% {
    opacity: 0;
    background-color: rgba(0, 0, 0, 0);
  }
  55% {
    opacity: 1;
  }
  100% {
    opacity: 1;
    background-color: #000;
  }
}

@keyframes pxViewerPhotoIn {
  0% {
    opacity: 0;
    transform: scale(0.96);
  }
  55% {
    opacity: 1;
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes pxViewerDismiss {
  0% {
    opacity: 1;
    background-color: #000;
  }
  100% {
    opacity: 0;
    background-color: rgba(0, 0, 0, 0);
  }
}

.px-photo-viewer.closing .px-photo-viewer-stage img.is-active {
  animation: pxViewerPhotoOut var(--viewer-dur) var(--viewer-ease) forwards;
}

.px-photo-viewer.closing .px-photo-viewer-controls {
  animation: pxViewerControlsOut var(--viewer-dur) var(--viewer-ease) forwards;
}

@keyframes pxViewerPhotoOut {
  0% {
    opacity: 1;
    transform: scale(1);
  }
  100% {
    opacity: 0;
    transform: scale(0.96);
  }
}

@keyframes pxViewerControlsOut {
  0% {
    opacity: 1;
    transform: translateY(0);
  }
  100% {
    opacity: 0;
    transform: translateY(28px);
  }
}

.px-photo-ctrl.close.is-closing {
  animation: pxViewerCloseBtn var(--viewer-dur) var(--viewer-ease) forwards;
}

@keyframes pxViewerCloseBtn {
  0% {
    transform: scale(1) rotate(0deg);
    opacity: 1;
  }
  35% {
    transform: scale(1.08) rotate(0deg);
  }
  100% {
    transform: scale(0.88) rotate(90deg);
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .px-photo-viewer,
  .px-photo-viewer-stage img,
  .px-photo-viewer-controls,
  .px-photo-ctrl.close {
    animation: none !important;
    transition: none !important;
  }
}

.px-photo-viewer-controls {
  flex-shrink: 0;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 14px 16px;
  padding-bottom: calc(14px + env(safe-area-inset-bottom, 0px));
  background: rgba(10, 10, 18, 0.72);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  z-index: 40;
  box-sizing: border-box;
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity var(--viewer-dur) var(--viewer-ease) 100ms,
    transform var(--viewer-dur) var(--viewer-ease) 100ms;
}

.px-photo-viewer.open .px-photo-viewer-controls {
  opacity: 1;
  transform: translateY(0);
}

.px-photo-viewer.closing .px-photo-viewer-controls {
  transition: none;
}

.px-photo-viewer.has-footer .px-photo-viewer-controls {
  padding-bottom: 20px;
}

/* PWA / home-screen: lift PREV · close · NEXT so bottom corners aren’t clipped */
@media (display-mode: standalone), (display-mode: fullscreen), (display-mode: minimal-ui) {
  .px-photo-viewer-controls {
    padding-bottom: calc(24px + env(safe-area-inset-bottom, 0px));
    padding-left: calc(20px + env(safe-area-inset-left, 0px));
    padding-right: calc(20px + env(safe-area-inset-right, 0px));
  }

  .px-photo-viewer.has-footer .px-photo-viewer-controls {
    padding-bottom: 20px;
  }

  .px-photo-viewer .px-viewer-footer {
    padding-bottom: calc(20px + env(safe-area-inset-bottom, 0px));
  }
}

.px-photo-ctrl {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 56px;
  padding: 0 20px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.1);
  color: white;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.2px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: background 0.15s ease;
}

.px-photo-ctrl.prev {
  justify-self: start;
  justify-content: flex-start;
  min-width: 0;
  width: 100%;
  max-width: 140px;
}

.px-photo-ctrl.next {
  justify-self: end;
  justify-content: flex-end;
  min-width: 0;
  width: 100%;
  max-width: 140px;
}

.px-photo-ctrl.close {
  width: 56px;
  height: 56px;
  padding: 0;
  border-radius: 999px;
  justify-self: center;
}

.px-photo-ctrl-icon {
  font-size: 32px;
  line-height: 1;
  font-weight: 300;
}

.px-photo-ctrl .ic {
  --ic-size: 24px;
}

.px-photo-ctrl:active {
  background: rgba(255, 255, 255, 0.2);
}

/* Bottom action footer for demo / landing experience viewer */
.px-photo-viewer .px-viewer-footer {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  align-items: center;
  padding: 10px 14px;
  padding-bottom: calc(10px + env(safe-area-inset-bottom, 0px));
  background: rgba(10, 10, 18, 0.65);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-top: 1px solid var(--glass-border);
  z-index: 30;
  gap: 10px;
  opacity: 0;
  transform: translateY(100%);
  transition:
    opacity var(--viewer-dur) var(--viewer-ease) 120ms,
    transform var(--viewer-dur) var(--viewer-ease) 120ms;
}

.px-photo-viewer.open .px-viewer-footer {
  opacity: 1;
  transform: translateY(0);
}

.px-photo-viewer.closing .px-viewer-footer {
  opacity: 0;
  transform: translateY(100%);
  transition:
    opacity var(--viewer-dur) var(--viewer-ease),
    transform var(--viewer-dur) var(--viewer-ease);
}

.px-photo-viewer .px-viewer-footer .footer-left,
.px-photo-viewer .px-viewer-footer .footer-center,
.px-photo-viewer .px-viewer-footer .footer-right {
  display: flex;
  justify-content: center;
  align-items: center;
}

.px-photo-viewer .px-viewer-footer label.large-check {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  color: #ccc;
  font-size: 13px;
  user-select: none;
  padding: 6px 14px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  transition: background 0.2s ease;
  white-space: nowrap;
  height: 32px;
  box-sizing: border-box;
  width: 100%;
  max-width: 110px;
  justify-content: center;
}

.px-photo-viewer .px-viewer-footer label.large-check:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.28);
}

.px-photo-viewer .px-viewer-footer label.large-check input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  flex-shrink: 0;
  accent-color: currentColor;
}

/* Compact icon-only viewer footer on phones (base = iPhone) */
.px-photo-viewer .px-viewer-footer .btn-label,
.px-photo-viewer .px-viewer-footer .check-label {
  display: none;
}

.px-photo-viewer .px-viewer-footer button .btn-icon {
  display: inline-block;
}

.px-photo-viewer .px-viewer-footer button {
  padding: 6px 8px;
  min-width: 32px;
}

.px-photo-viewer .px-viewer-footer button {
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.18);
  transition: background 0.2s ease;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 32px;
  box-sizing: border-box;
  width: 100%;
  max-width: 110px;
  justify-content: center;
}

.px-photo-viewer .px-viewer-footer button .btn-icon {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.px-photo-viewer .px-viewer-footer button .btn-icon {
  display: inline-block; /* always visible */
  vertical-align: middle;
}

.px-photo-viewer .px-viewer-footer button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.px-photo-viewer .px-viewer-footer button.delete-btn {
}

.px-photo-viewer .px-viewer-footer button:active:not(:disabled) {
  background: rgba(255, 255, 255, 0.18);
}

/* Sticky selection banner — flush under header; round bottom corners only */
.px-select-banner {
  position: fixed;
  top: var(--header-height);
  left: max(var(--sp-3), var(--safe-left));
  right: max(var(--sp-3), var(--safe-right));
  z-index: 999;
  height: var(--chrome-bar-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 var(--sp-3);
  margin: 0.5rem;
  box-sizing: border-box;
  background: var(--bg-glass-strong);
  border-radius: 0 0 var(--radius) var(--radius);
  backdrop-filter: saturate(200%) blur(32px);
  -webkit-backdrop-filter: saturate(200%) blur(32px);
  overflow: hidden;
  isolation: isolate;
}

.px-select-banner:not([hidden])::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1.5px;
  background: linear-gradient(
    115deg,
    rgba(255, 217, 61, 0.2),
    rgba(255, 217, 61, 0.95),
    #fff9e6,
    rgba(255, 217, 61, 1),
    rgba(255, 180, 50, 0.85),
    rgba(255, 217, 61, 0.2),
    rgba(255, 217, 61, 0.95),
    #fff9e6,
    rgba(255, 217, 61, 0.2)
  );
  background-size: 320% 320%;
  animation: pxSelectBannerBorderWeave 5.4s linear infinite;
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  mask-composite: exclude;
  pointer-events: none;
}

.px-select-banner:not([hidden])::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  box-shadow:
    inset 0 -1px 0 rgba(255, 217, 61, 0.35),
    0 0 22px rgba(255, 217, 61, 0.14);
  animation: pxSelectBannerGlow 4.68s ease-in-out infinite;
}

.px-select-banner-count,
.px-select-banner-actions {
  position: relative;
  z-index: 1;
}

@keyframes pxSelectBannerBorderWeave {
  0% { background-position: 0% 50%; }
  100% { background-position: 320% 50%; }
}

@keyframes pxSelectBannerGlow {
  0%, 100% {
    box-shadow:
      inset 0 -1px 0 rgba(255, 217, 61, 0.28),
      0 0 14px rgba(255, 217, 61, 0.1);
  }
  50% {
    box-shadow:
      inset 0 -1px 0 rgba(255, 217, 61, 0.65),
      0 0 26px rgba(255, 217, 61, 0.28);
  }
}

@media (prefers-reduced-motion: reduce) {
  .px-select-banner::before,
  .px-select-banner::after {
    animation: none;
  }

  .px-select-banner:not([hidden])::before {
    background: rgba(255, 217, 61, 0.75);
    background-size: auto;
  }
}

body.px-app.px-has-select-banner {
  padding-top: calc(var(--header-height) + var(--chrome-bar-height) + 1rem);
}

.px-select-banner-count {
  font-size: 14px;
  font-weight: 600;
  color: var(--tx);
  letter-spacing: -0.2px;
  white-space: nowrap;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  position: relative;
  z-index: 1;
}

.px-select-banner-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

.px-select-banner-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 36px;
  padding: 0 12px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.1);
  color: var(--tx);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  white-space: nowrap;
}

.px-select-banner-btn .ic {
  --ic-size: 18px;
}

.px-select-banner-btn:active {
  background: rgba(255, 255, 255, 0.18);
}

.px-select-banner-btn[data-action=download] {
  background: rgba(167, 139, 250, 0.22);
  border-color: rgba(167, 139, 250, 0.35);
}

.px-select-banner--viewer {
  position: absolute;
  top: 0;
  left: max(var(--sp-3), var(--safe-left));
  right: max(var(--sp-3), var(--safe-right));
  z-index: 60;
  padding-top: env(safe-area-inset-top, 0px);
  height: calc(var(--chrome-bar-height) + env(safe-area-inset-top, 0px));
  box-sizing: border-box;
  border-radius: 0 0 var(--radius) var(--radius);
}

.px-photo-viewer.has-active-select-banner .px-photo-viewer-stage {
  padding-top: calc(var(--chrome-bar-height) + env(safe-area-inset-top, 0px));
}

.px-photo-viewer .px-viewer-footer--two {
  grid-template-columns: 1fr 1fr;
}