/* ==========================================
   Lightbox Overlay Component (Tap to Zoom)
   ========================================== */
.lightbox-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

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

.lightbox-controls {
  position: fixed;
  top: 24px;
  right: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 10000;
}

.lightbox-btn {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  font-size: 1.25rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.lightbox-close {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  font-size: 1.5rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

@media (hover: hover) {
  .lightbox-btn:hover,
  .lightbox-close:hover {
    transform: scale(1.05);
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--color-primary);
    color: var(--color-primary);
  }
}

.lightbox-content {
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.lightbox-content img {
  max-width: 90%;
  max-height: 90%;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: var(--radius-sm);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  border: 1px solid var(--border-color);
  cursor: grab;
}

.lightbox-content img:active {
  cursor: grabbing;
}

/* cursor hints for zoomable images */
.case-study-media img.zoomable-img,
.cs-gallery-item img.zoomable-img {
  cursor: zoom-in;
}

/* Lightbox Spinner Loader styling */
.lightbox-spinner {
  width: 50px;
  height: 50px;
  border: 4px solid rgba(255, 255, 255, 0.1);
  border-left-color: var(--color-accent);
  border-radius: 50%;
  animation: lightbox-spin 0.8s linear infinite;
  position: absolute;
  z-index: 10001;
  display: none;
}

@keyframes lightbox-spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 768px) {
  .lightbox-controls {
    top: 16px;
    right: 16px;
    gap: 8px;
  }
  
  .lightbox-btn, .lightbox-close {
    width: 48px; /* Bigger touch targets on mobile */
    height: 48px;
  }
  
  .lightbox-content img {
    max-width: 95%;
    max-height: 85%;
  }
}