/* ==========================================================================
   CMS Lightbox — Reusable fullscreen image viewer
   Prefix: cms-lb-
   ========================================================================== */

/* ---- Overlay ---- */

.cms-lb-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.cms-lb-overlay.cms-lb-active {
  opacity: 1;
  pointer-events: auto;
}

.cms-lb-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.96);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
}

/* ---- Image stage ---- */

.cms-lb-stage {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 90vw;
  height: 72vh;
  margin-top: 20px;
}

.cms-lb-img-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

.cms-lb-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 4px;
  opacity: 0;
  transition: opacity 0.35s ease;
  user-select: none;
  -webkit-user-drag: none;
}

.cms-lb-img.cms-lb-loaded {
  opacity: 1;
}

/* ---- Loading spinner ---- */

.cms-lb-spinner {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 36px;
  height: 36px;
  border: 2.5px solid rgba(255, 255, 255, 0.12);
  border-top-color: rgba(255, 255, 255, 0.7);
  border-radius: 50%;
  animation: cms-lb-spin 0.8s linear infinite;
}

.cms-lb-img.cms-lb-loaded ~ .cms-lb-spinner {
  display: none;
}

@keyframes cms-lb-spin {
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* ---- Navigation buttons ---- */

.cms-lb-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 3;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.85);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.25s ease;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 0;
}

.cms-lb-nav:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.25);
  color: #fff;
  transform: translateY(-50%) scale(1.08);
  box-shadow: 0 0 24px rgba(255, 255, 255, 0.06);
}

.cms-lb-nav:active {
  transform: translateY(-50%) scale(0.95);
}

.cms-lb-nav svg {
  width: 22px;
  height: 22px;
  stroke-width: 2;
  fill: none;
  stroke: currentColor;
}

.cms-lb-prev { left: 24px; }
.cms-lb-next { right: 24px; }

/* ---- Close button ---- */

.cms-lb-close {
  position: absolute;
  top: 20px;
  right: 24px;
  z-index: 4;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.85);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.25s ease;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  font-size: 22px;
  line-height: 1;
  padding: 0;
}

.cms-lb-close:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.25);
  color: #fff;
  transform: scale(1.08);
}

.cms-lb-close:active {
  transform: scale(0.95);
}

/* ---- Counter pill ---- */

.cms-lb-counter {
  position: absolute;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 4;
  padding: 6px 18px;
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: rgba(255, 255, 255, 0.8);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  user-select: none;
}

/* ---- Caption ---- */

.cms-lb-caption {
  position: absolute;
  bottom: 108px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 4;
  max-width: 70vw;
  padding: 8px 22px;
  border-radius: 100px;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: rgba(255, 255, 255, 0.85);
  font-size: 13px;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.cms-lb-caption.cms-lb-visible {
  opacity: 1;
}

/* ---- Thumbnail strip ---- */

.cms-lb-thumbs {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 3;
  height: 88px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 80px;
  overflow-x: auto;
  overflow-y: hidden;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.7) 0%, transparent 100%);

  /* Hide scrollbar */
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.cms-lb-thumbs::-webkit-scrollbar {
  display: none;
}

.cms-lb-thumb {
  flex: 0 0 56px;
  width: 56px;
  height: 56px;
  border-radius: 6px;
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  opacity: 0.45;
  transition: all 0.25s ease;
  position: relative;
}

.cms-lb-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  pointer-events: none;
}

.cms-lb-thumb:hover {
  opacity: 0.75;
}

.cms-lb-thumb.cms-lb-thumb-active {
  opacity: 1;
  border-color: rgba(255, 255, 255, 0.9);
  transform: scale(1.1);
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.15);
}

/* ---- Single image mode (hide nav + thumbs) ---- */

.cms-lb-overlay.cms-lb-single .cms-lb-nav,
.cms-lb-overlay.cms-lb-single .cms-lb-thumbs,
.cms-lb-overlay.cms-lb-single .cms-lb-counter {
  display: none;
}

.cms-lb-overlay.cms-lb-single .cms-lb-caption {
  bottom: 40px;
}

.cms-lb-overlay.cms-lb-single .cms-lb-stage {
  height: 85vh;
  margin-top: 0;
}

/* ---- Responsive ---- */

@media (max-width: 600px) {
  .cms-lb-stage {
    width: 96vw;
    height: 70vh;
    margin-top: 16px;
  }

  .cms-lb-nav {
    width: 42px;
    height: 42px;
  }

  .cms-lb-nav svg {
    width: 18px;
    height: 18px;
  }

  .cms-lb-prev { left: 10px; }
  .cms-lb-next { right: 10px; }

  .cms-lb-close {
    top: 12px;
    right: 12px;
    width: 38px;
    height: 38px;
    font-size: 18px;
  }

  .cms-lb-counter {
    top: 16px;
    font-size: 12px;
    padding: 5px 14px;
  }

  .cms-lb-thumbs {
    height: 72px;
    padding: 0 16px;
    gap: 6px;
  }

  .cms-lb-thumb {
    flex: 0 0 44px;
    width: 44px;
    height: 44px;
  }

  .cms-lb-caption {
    bottom: 84px;
    font-size: 12px;
    max-width: 85vw;
    padding: 6px 16px;
  }

  .cms-lb-overlay.cms-lb-single .cms-lb-stage {
    height: 82vh;
  }

  .cms-lb-overlay.cms-lb-single .cms-lb-caption {
    bottom: 24px;
  }
}

@media (max-width: 400px) {
  .cms-lb-thumbs {
    display: none;
  }

  .cms-lb-stage {
    height: 80vh;
  }

  .cms-lb-caption {
    bottom: 32px;
  }
}

/* ---- RTL ---- */

[dir="rtl"] .cms-lb-prev { left: auto; right: 24px; }
[dir="rtl"] .cms-lb-next { right: auto; left: 24px; }
[dir="rtl"] .cms-lb-close { right: auto; left: 24px; }

@media (max-width: 600px) {
  [dir="rtl"] .cms-lb-prev { left: auto; right: 10px; }
  [dir="rtl"] .cms-lb-next { right: auto; left: 10px; }
  [dir="rtl"] .cms-lb-close { right: auto; left: 12px; }
}