/* ==========================================================================
   KPOP PHOTOWALL — 3D CARDS & GALLERY STYLES
   Crafted by National Design Studio
   ========================================================================== */

/* ==========================================================================
   VIEW 1: BENTO CURATED GRID
   ========================================================================== */
.photowall-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-xl);
  padding-bottom: var(--space-4xl);
}

@media (min-width: 1200px) {
  .photowall-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  /* Hero card span 2 rows */
  .photocard-item.featured-wide {
    grid-column: span 2;
  }
  .photocard-item.tall-strip {
    grid-row: span 2;
  }
}

/* ==========================================================================
   CARD CONTAINER & 3D RIG
   ========================================================================== */
.photocard-item {
  position: relative;
  perspective: 1200px;
  cursor: pointer;
  user-select: none;
}

.card-3d-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 4.4;
  transform-style: preserve-3d;
  transition: transform var(--duration-fast) ease-out, box-shadow var(--duration-normal);
  border-radius: var(--radius-card);
}

/* Specific aspect ratios for formats */
.photocard-item.tall-strip .card-3d-wrapper {
  aspect-ratio: 1 / 2.3;
}

.photocard-item.polaroid-snap .card-3d-wrapper {
  aspect-ratio: 3.5 / 4.2;
}

/* Card Inner (Handles Flip) */
.card-flip-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.65s cubic-bezier(0.2, 0.85, 0.32, 1.2);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
}

.photocard-item.is-flipped .card-flip-inner {
  transform: rotateY(180deg);
}

/* Card Front & Back Faces */
.card-face {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: var(--radius-card);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* ==========================================================================
   CARD FRONT: THE VISUAL ICON
   ========================================================================== */
.card-front {
  background-color: var(--bg-card);
  border: 1px solid var(--border-card);
}

.card-image-canvas {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-smooth);
}

.photocard-item:hover .card-img {
  transform: scale(1.04);
}

/* Holographic Specular Glare Layer */
.holo-glare-layer {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--holo-rainbow);
  background-size: 200% 200%;
  opacity: var(--glare-opacity, 0);
  background-position: var(--glare-x, 50%) var(--glare-y, 50%);
  mix-blend-mode: color-dodge;
  pointer-events: none;
  z-index: 10;
  transition: opacity 0.25s ease;
}

/* Gloss Reflection Sweep */
.gloss-sweep {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.45) 0%,
    rgba(255, 255, 255, 0.05) 40%,
    transparent 60%
  );
  pointer-events: none;
  z-index: 11;
  opacity: 0.6;
}

/* Card Overlays & Authentic Details */
.card-top-badges {
  position: absolute;
  top: 14px;
  left: 14px;
  right: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 12;
}

.collector-serial {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.8px;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(12px);
  color: #FFFFFF;
  padding: 3px 8px;
  border-radius: var(--radius-xs);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.holo-security-seal {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: conic-gradient(from 0deg, #FF0080, #7928CA, #00DFD8, #FFD166, #FF0080);
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
  border: 1.5px solid #FFFFFF;
  display: grid;
  place-items: center;
  font-size: 0.55rem;
  font-weight: 900;
  color: #FFFFFF;
  letter-spacing: -0.5px;
}

.card-bottom-info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 32px 16px 14px;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0.5) 60%, transparent 100%);
  color: #FFFFFF;
  z-index: 12;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.idol-title-group h3 {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.3px;
  line-height: 1.1;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.idol-title-group p {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.8);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
}

.format-pill {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  background: rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(8px);
  padding: 2px 6px;
  border-radius: var(--radius-xs);
}

.card-action-heart {
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #FFFFFF;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: all var(--duration-fast);
}

.card-action-heart:hover {
  background: rgba(255, 46, 99, 0.9);
  border-color: rgba(255, 46, 99, 1);
  transform: scale(1.1);
}

.card-action-heart.active {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #FFFFFF;
}

/* ==========================================================================
   CARD BACK: HUMAN TOUCH & AIRBNB AUTHENTICITY
   ========================================================================== */
.card-back {
  background: var(--bg-card-back);
  color: var(--text-primary);
  transform: rotateY(180deg);
  padding: var(--space-lg);
  border: 1px solid var(--border-card);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.card-back-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px dashed var(--border-subtle);
  padding-bottom: var(--space-sm);
}

.fandom-stamp {
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent-primary);
}

.edition-stamp {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-tertiary);
}

.card-back-body {
  margin: auto 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-sm);
}

.idol-korean-greeting {
  font-family: var(--font-script), cursive;
  font-size: 1.55rem;
  line-height: 1.3;
  color: var(--text-primary);
  transform: rotate(-2deg);
}

.idol-signature-wrap {
  width: 140px;
  height: 60px;
  margin: var(--space-xs) 0;
  display: grid;
  place-items: center;
}

.idol-signature-svg {
  width: 100%;
  height: 100%;
  stroke: var(--text-primary);
  stroke-width: 2.2;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.track-quote {
  font-size: 0.82rem;
  font-style: italic;
  color: var(--text-secondary);
}

.card-back-footer {
  border-top: 1px solid var(--border-subtle);
  padding-top: var(--space-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.pantone-swatches {
  display: flex;
  gap: 4px;
}

.pantone-chip {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1px solid rgba(0, 0, 0, 0.1);
}

.barcode-strip {
  height: 22px;
  opacity: 0.6;
}

/* Flip hint badge */
.flip-hint-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  color: #FFFFFF;
  padding: 4px 8px;
  border-radius: var(--radius-xs);
  font-size: 0.68rem;
  font-weight: 600;
  opacity: 0;
  transition: opacity var(--duration-fast);
  z-index: 15;
  pointer-events: none;
}

.photocard-item:hover .flip-hint-badge {
  opacity: 1;
}

/* ==========================================================================
   VIEW 2: FREEFORM PINBOARD (CORKBOARD / MOODBOARD)
   ========================================================================== */
.photowall-pinboard {
  display: none;
  position: relative;
  width: 100%;
  min-height: 850px;
  background-color: var(--pinboard-bg);
  background-image: radial-gradient(var(--border-subtle) 1.5px, transparent 1.5px);
  background-size: 24px 24px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-card);
  padding: var(--space-3xl);
  box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.05);
  overflow: hidden;
  margin-bottom: var(--space-4xl);
}

.photowall-pinboard.active-view {
  display: block;
}

.pinboard-toolbar-tip {
  position: absolute;
  top: 20px;
  left: 24px;
  background: var(--bg-glass-heavy);
  backdrop-filter: blur(16px);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Washi Tape Strip Metaphor */
.washi-tape {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%) rotate(var(--tape-rot, -2deg));
  width: 70px;
  height: 22px;
  background: rgba(255, 230, 109, var(--washi-alpha));
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
  z-index: 20;
  border-left: 2px dashed rgba(0, 0, 0, 0.15);
  border-right: 2px dashed rgba(0, 0, 0, 0.15);
}

.washi-tape.pink {
  background: rgba(255, 117, 143, var(--washi-alpha));
}

.washi-tape.cyan {
  background: rgba(78, 205, 196, var(--washi-alpha));
}

.washi-tape.lilac {
  background: rgba(187, 134, 252, var(--washi-alpha));
}

/* Pushpin Metaphor */
.metal-pushpin {
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #FFFFFF, #FF2E63 60%, #900C3F);
  box-shadow: 0 3px 6px rgba(0, 0, 0, 0.35);
  z-index: 22;
}

/* Draggable Pinboard Item */
.pinboard-item {
  position: absolute;
  width: 250px;
  cursor: grab;
  transition: transform 0.15s ease-out, box-shadow 0.2s;
  z-index: 5;
}

.pinboard-item:active {
  cursor: grabbing;
  z-index: 50;
}

.pinboard-item.dragging {
  transform: scale(1.04) rotate(0deg) !important;
  box-shadow: var(--shadow-lg);
}

/* Sticky Note on Pinboard */
.pinboard-sticky-note {
  position: absolute;
  width: 200px;
  padding: var(--space-md);
  background: #FFF9A6;
  color: #333333;
  border-radius: var(--radius-xs);
  box-shadow: var(--shadow-md);
  font-family: var(--font-script), cursive;
  font-size: 1.25rem;
  line-height: 1.4;
  z-index: 4;
}

[data-theme="dark"] .pinboard-sticky-note {
  background: #2D2A18;
  color: #FFF275;
}

/* ==========================================================================
   LIGHTBOX INSPECTION MODAL
   ========================================================================== */
.lightbox-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0, 0, 0, 0.88);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-smooth);
  padding: var(--space-lg);
}

.lightbox-modal.active {
  opacity: 1;
  pointer-events: auto;
}

.lightbox-dialog {
  display: grid;
  grid-template-columns: 420px 380px;
  background: var(--bg-secondary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-card);
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.6);
  max-width: 900px;
  width: 100%;
}

@media (max-width: 820px) {
  .lightbox-dialog {
    grid-template-columns: 1fr;
    max-height: 90vh;
    overflow-y: auto;
  }
}

.lightbox-card-viewport {
  background: var(--bg-tertiary);
  padding: var(--space-2xl);
  display: grid;
  place-items: center;
  position: relative;
}

.lightbox-details-panel {
  padding: var(--space-2xl);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.lightbox-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  z-index: 210;
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: #FFFFFF;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  cursor: pointer;
  display: grid;
  place-items: center;
}