/* ============================================
   GRID VIEW
   ============================================ */
.grid-toggle-btn {
  position: absolute !important;
  top: 12px !important;      /* ← allinea verticalmente al centro del fs-open-btn (44px / 2 - 10px = 12px) */
  left: auto !important;
  right: 36px !important;    /* ← avvicina al fs-open-btn (era 52px) */
  width: 20px;
  height: 20px;
  background: transparent;
  border: none;
  cursor: pointer;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  justify-content: center;
  align-content: center;
  z-index: 1001 !important;
  padding: 0;
  opacity: 1;
  pointer-events: auto;
  color: var(--text-main);
  transition: opacity 0.3s ease;
}

.grid-toggle-btn span {
  width: 2.5px;
  height: 2.5px;
  border-radius: 50%;
  background-color: var(--text-main);
  transition: background-color 0.3s, transform 0.3s ease;
}

.grid-toggle-btn:hover span {
  background-color: var(--accent-lime);
  transform: scale(1.2);
}

.grid-view {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  min-height: 100vh;
  height: auto !important;
  background: var(--bg-dark);
  z-index: 90000 !important;
  display: block;
  column-count: 4;
  column-gap: 15px;
  padding: 12vh 5vw 5vh 5vw;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease, visibility 0.4s ease;
  box-sizing: border-box;
}

.grid-view.active {
  opacity: 1;
  visibility: visible;
}

.grid-item {
  break-inside: avoid;
  -webkit-column-break-inside: avoid;
  page-break-inside: avoid;
  margin-bottom: 12px;
  cursor: pointer;
  overflow: hidden;
  border-radius: 3px;
  display: inline-block;
  width: 100%;
  position: relative;
  background: rgba(var(--text-main-rgb), 0.06);
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  opacity: 0;
  transform: translateY(18px) translateZ(0);
  transition: opacity 0.55s cubic-bezier(0.23, 1, 0.32, 1),
              transform 0.55s cubic-bezier(0.23, 1, 0.32, 1);
}

.grid-item.grid-item--visible {
  opacity: 1;
  transform: translateY(0) translateZ(0);
}

/* Skeleton shimmer */
.grid-item.skeleton::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.18) 50%, transparent 100%);
  background-size: 200% 100%;
  animation: gridShimmer 1.6s ease-in-out infinite;
  z-index: 2;
  pointer-events: none;
  opacity: 1;
  transition: opacity 0.5s ease;
}

.grid-item:not(.skeleton)::after {
  opacity: 0;
  animation: none;
}

@keyframes gridShimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.grid-photo {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  transition: transform 0.45s cubic-bezier(0.23, 1, 0.32, 1),
              opacity 0.5s cubic-bezier(0.23, 1, 0.32, 1),
              filter 0.5s cubic-bezier(0.23, 1, 0.32, 1);
  background-color: rgba(var(--text-main-rgb), 0.08);
  aspect-ratio: 3 / 4;
}

.grid-photo:not(.img-loaded) {
  opacity: 0.35;
  filter: blur(10px) saturate(0.2) brightness(1.1);
  transform: scale(1.04);
}

.grid-photo.img-loaded {
  opacity: 1;
  filter: blur(0) saturate(1) brightness(1);
  transform: scale(1);
}

.grid-item:hover .grid-photo {
  transform: scale(1.03);
}

body.grid-active .gallery-scroll,
body.grid-active .gallery-nav-arrow {
  opacity: 0;
  pointer-events: none;
}

/* ============================================
   GRID BUTTON "TRUE X" ANIMATION
   ============================================ */
.grid-toggle-btn::before,
.grid-toggle-btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 14px;
  height: 1.5px;
  background-color: var(--accent-lime);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

.grid-toggle-btn::before { transform: translate(-50%, -50%) rotate(0deg) scale(0); }
.grid-toggle-btn::after { transform: translate(-50%, -50%) rotate(0deg) scale(0); }

body.grid-active .grid-toggle-btn span {
  opacity: 0 !important;
  transform: scale(0) !important;
}

body.grid-active .grid-toggle-btn::before {
  opacity: 1;
  transform: translate(-50%, -50%) rotate(45deg) scale(1);
}
body.grid-active .grid-toggle-btn::after {
  opacity: 1;
  transform: translate(-50%, -50%) rotate(-45deg) scale(1);
}

/* Quando la grid è attiva, il toggle resta cliccabile sopra la grid view */
body.grid-active .grid-toggle-btn {
  z-index: 100000 !important;
  opacity: 1 !important;
  pointer-events: auto !important;
}

/* FIX: reset del bottone su dispositivi touch */
@media (hover: none) {
  .grid-toggle-btn:hover span {
    background-color: var(--text-main);
    transform: scale(1);
  }
}