/* ── Photo card — physical print on the desk ────────── */
.photo-card {
  break-inside: avoid;
  margin-bottom: 28px;
  cursor: pointer;
  position: relative;

  /* Rotation is set per-card via inline CSS custom property */
  transform: rotate(var(--rotation, 0deg));
  transform-origin: center center;

  transition:
    transform 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94),
    box-shadow 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);

  /* Three shadow layers: contact edge, mid lift, ambient spread */
  box-shadow:
    0 1px 2px   rgba(0, 0, 0, 0.60),
    0 5px 14px  rgba(0, 0, 0, 0.42),
    0 18px 52px rgba(0, 0, 0, 0.26);

  user-select: none;
  -webkit-user-select: none;
  outline: none;
}

.photo-card:hover,
.photo-card:focus-visible {
  transform: rotate(var(--rotation, 0deg)) translateY(-9px) scale(1.028);
  box-shadow:
    0 2px 5px   rgba(0, 0, 0, 0.60),
    0 12px 30px rgba(0, 0, 0, 0.46),
    0 34px 80px rgba(0, 0, 0, 0.32);
  z-index: 10;
}

.photo-card:active {
  transform: rotate(var(--rotation, 0deg)) translateY(-4px) scale(1.012);
  transition-duration: 0.08s;
}

/* Focus ring for keyboard nav — visible but styled for the desk */
.photo-card:focus-visible::after {
  content: '';
  position: absolute;
  inset: -4px;
  border: 2px solid var(--accent-dim);
  pointer-events: none;
}

/* ── Image area ─────────────────────────────────────── */
.photo-card__image-wrap {
  display: block;
  overflow: hidden;
  background: transparent;
  line-height: 0;
}

.photo-card__image-wrap img {
  width: 100%;
  height: auto;
  display: block;
  transition: opacity var(--dur-slow) ease;
}

.photo-card__image-wrap img.is-loading {
  opacity: 0;
}

/* ── Flip 3D wrapper ────────────────────────────────── */
.photo-card__inner {
  position: relative;
  transform-style: preserve-3d;
  -webkit-transform-style: preserve-3d;
  /* perspective inline so no parent stacking-context surface is created */
  transform: perspective(900px) rotateY(0deg);
  transition: transform 0.55s cubic-bezier(0.45, 0.05, 0.55, 0.95);
  will-change: transform;
}

.photo-card.is-flipped .photo-card__inner {
  transform: perspective(900px) rotateY(180deg);
}

.photo-card__front {
  position: relative;
  background: var(--paper-aged);
  padding: 10px;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.photo-card__back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transform: rotateY(180deg);
  background: var(--paper-aged);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  padding: 10px 10px 8px;
}

.photo-card__back-body {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(var(--sepia-rgb), 0.2) transparent;
  background-image: repeating-linear-gradient(
    180deg,
    transparent 0px,
    transparent 19px,
    rgba(var(--sepia-rgb), 0.09) 19px,
    rgba(var(--sepia-rgb), 0.09) 20px
  );
  background-attachment: local;
}

.photo-card__back-title {
  font-family: var(--font-ibm-sans);
  font-size: var(--text-base);
  font-weight: normal;
  color: var(--ink-paper);
  margin: 0 0 6px;
  line-height: 1.4;
  flex-shrink: 0;
}

.photo-card__back-desc {
  font-family: var(--font-serif);
  font-size: var(--text-sm);
  line-height: 1.75;
  color: rgba(var(--ink-paper-rgb), 0.82);
  white-space: pre-wrap;
  margin: 0;
}

.photo-card__back-exif {
  flex-shrink: 0;
  padding-top: 7px;
  margin-top: 7px;
  border-top: 1px solid rgba(var(--sepia-rgb), 0.2);
}

.photo-card__back-exif dl {
  display: grid;
  grid-template-columns: 4.8em 1fr;
  row-gap: 3px;
  column-gap: 14px;
  font-family: var(--font-mono-read);
  font-size: var(--text-2xs);
  letter-spacing: 0.02em;
}

.photo-card__back-exif dt {
  color: rgba(var(--sepia-rgb), 0.45);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding-top: 1px;
}

.photo-card__back-exif dd {
  color: rgba(var(--ink-paper-rgb), 0.8);
  overflow-wrap: break-word;
  min-width: 0;
}

.photo-card__back-actions {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 7px;
  padding-top: 6px;
  border-top: 1px solid rgba(var(--sepia-rgb), 0.15);
}

.photo-card__action-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono-read);
  font-size: var(--text-2xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: none;
  border: 1px solid rgba(var(--sepia-rgb), 0.35);
  color: rgba(var(--sepia-rgb), 0.7);
  padding: 3px 8px;
  cursor: pointer;
  text-decoration: none;
  transition: color var(--dur-fast), border-color var(--dur-fast);
  line-height: 1.6;
}

.photo-card__action-btn:hover {
  color: var(--ink-paper);
  border-color: rgba(var(--sepia-rgb), 0.7);
}

.photo-card__flip-back {
  position: absolute;
  bottom: 16px;
  right: 16px;
  background: none;
  border: none;
  color: rgba(var(--stamp-rgb), 0.5);
  cursor: pointer;
  font-size: var(--text-md);
  line-height: 1;
  padding: 3px 4px;
  z-index: 6;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-fast), color var(--dur-fast);
}

.photo-card.is-flipped .photo-card__flip-back {
  opacity: 0.7;
  pointer-events: auto;
}

.photo-card.is-flipped .photo-card__flip-back:hover {
  opacity: 1;
  color: rgba(var(--stamp-rgb), 0.9);
}

/* Hide stamp + flip trigger when showing back face */
.photo-card.is-flipped .photo-card__date-stamp,
.photo-card.is-flipped .photo-card__flip-btn {
  opacity: 0;
  pointer-events: none;
}

/* On hover: fade date stamp out, flip trigger fades in at the same spot */
.photo-card:hover .photo-card__date-stamp {
  opacity: 0.15;
}

/* ── Camera date stamp ──────────────────────────────── */
.photo-card__date-stamp {
  position: absolute;
  bottom: 16px;
  right: 16px;
  font-family: var(--font-mono);
  font-size: var(--text-base);
  font-weight: normal;
  letter-spacing: 0.12em;
  color: var(--stamp);
  text-shadow:
    0 0 6px rgba(232, 130, 10, 0.7),
    0 1px 2px rgba(0, 0, 0, 0.6);
  pointer-events: none;
  user-select: none;
  line-height: 1;
  transition: opacity 0.2s ease;
}

/* ── Flip trigger — bottom-right corner ─────────────── */
.photo-card__flip-btn {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: none;
  border: none;
  color: rgba(var(--stamp-rgb), 0.85);
  cursor: pointer;
  font-size: var(--text-md);
  line-height: 1;
  padding: 3px 4px;
  opacity: 0;
  transition: opacity var(--dur-fast), color var(--dur-fast);
  z-index: 6;
  text-shadow:
    0 0 6px rgba(232, 130, 10, 0.6),
    0 1px 2px rgba(0, 0, 0, 0.6);
}

.photo-card:hover .photo-card__flip-btn {
  opacity: 1;
}

.photo-card__flip-btn:hover {
  color: #ffe066;
}