/* ══════════════════════════════════════════════════════════════
   ZOOM MODAL — Fullscreen gallery tipo Mercado Libre/eBay
══════════════════════════════════════════════════════════════ */

.tb-zoom-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(0, 0, 0, 0.92);
  user-select: none;
  -webkit-user-select: none;
}

.tb-zoom-modal.open {
  display: block;
}

/* ── CLOSE BUTTON ── */
.tb-zoom-close {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 10002;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.6);
  border: 2px solid rgba(255, 255, 255, 0.25);
  color: #fff;
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
}

.tb-zoom-close:hover {
  background: rgba(0, 0, 0, 0.8);
  border-color: rgba(255, 255, 255, 0.5);
  transform: scale(1.08);
}

/* ── NAV ARROWS ── */
.tb-zoom-prev,
.tb-zoom-next {
  position: fixed;
  top: 50%;
  z-index: 10002;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.5);
  border: 2px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, border-color 0.2s, opacity 0.2s;
  opacity: 0.8;
}

.tb-zoom-prev:hover,
.tb-zoom-next:hover {
  background: rgba(0, 0, 0, 0.75);
  border-color: rgba(255, 255, 255, 0.45);
  opacity: 1;
}

.tb-zoom-prev { left: 16px; }
.tb-zoom-next { right: 16px; }

.tb-zoom-prev.hidden,
.tb-zoom-next.hidden {
  opacity: 0;
  pointer-events: none;
}

/* ── IMAGE WRAPPER ── */
.tb-zoom-wrapper {
  position: fixed;
  inset: 0;
  overflow: hidden;
}

.tb-zoom-wrapper img {
  display: block;
  opacity: 0;
  transition: opacity 0.25s ease;
  cursor: grab;
  transform-origin: 0 0;
  will-change: transform;
}

.tb-zoom-wrapper img.loaded {
  opacity: 1;
}

.tb-zoom-wrapper img.grabbing {
  cursor: grabbing;
}

/* ── LOADING SPINNER ── */
.tb-zoom-loader {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.25s;
}

.tb-zoom-loader.active {
  opacity: 1;
}

.tb-zoom-loader::after {
  content: '';
  width: 40px;
  height: 40px;
  border: 3px solid rgba(255, 255, 255, 0.15);
  border-top-color: #fff;
  border-radius: 50%;
  animation: tbZoomSpin 0.7s linear infinite;
}

@keyframes tbZoomSpin {
  to { transform: rotate(360deg); }
}

/* ── COUNTER ── */
.tb-zoom-counter {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10002;
  color: rgba(255, 255, 255, 0.6);
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.5px;
  pointer-events: none;
  background: rgba(0, 0, 0, 0.4);
  padding: 6px 16px;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* ── THUMBNAIL STRIP ── */
.tb-zoom-thumbs {
  position: fixed;
  bottom: 64px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10002;
  display: flex;
  gap: 8px;
  padding: 8px 12px;
  background: rgba(0, 0, 0, 0.45);
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  max-width: 80vw;
  overflow-x: auto;
  scrollbar-width: none;
}

.tb-zoom-thumbs::-webkit-scrollbar {
  display: none;
}

.tb-zoom-thumb {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  overflow: hidden;
  flex-shrink: 0;
  border: 2px solid transparent;
  cursor: pointer;
  opacity: 0.5;
  transition: opacity 0.2s, border-color 0.2s;
  background: rgba(255, 255, 255, 0.05);
}

.tb-zoom-thumb:hover {
  opacity: 0.8;
}

.tb-zoom-thumb.active {
  opacity: 1;
  border-color: rgba(255, 255, 255, 0.7);
}

.tb-zoom-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ── SWIPE HINT ── */
.tb-zoom-swipe-hint {
  position: fixed;
  left: 50%;
  bottom: 110px;
  transform: translateX(-50%);
  z-index: 10002;
  color: rgba(255, 255, 255, 0.2);
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.5s;
}

.tb-zoom-swipe-hint.show {
  opacity: 1;
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .tb-zoom-close {
    top: 12px;
    right: 12px;
    width: 38px;
    height: 38px;
    font-size: 18px;
  }

  .tb-zoom-prev,
  .tb-zoom-next {
    width: 40px;
    height: 40px;
    font-size: 16px;
  }

  .tb-zoom-prev { left: 8px; }
  .tb-zoom-next { right: 8px; }

  .tb-zoom-counter {
    bottom: 14px;
    font-size: 12px;
    padding: 4px 12px;
  }

  .tb-zoom-thumbs {
    display: none;
  }
}