/* Lightweight lightbox styles for Sphinx pages */
:root {
  --sf-lb-backdrop: rgba(0, 0, 0, 0.72);
  --sf-lb-caption-bg: rgba(0, 0, 0, 0.55);
  --sf-lb-caption-fg: #fff;
}

body.sf-lightbox-open {
  overflow: hidden;
}

#sf-lightbox-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999; /* above most themes */
  display: none;
}

#sf-lightbox-overlay.is-open {
  display: block;
}

#sf-lightbox-overlay .sf-lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: var(--sf-lb-backdrop);
  backdrop-filter: blur(1px);
}

#sf-lightbox-overlay .sf-lightbox-figure {
  position: absolute;
  inset: 0;
  margin: 0;
  display: grid;
  grid-template-rows: 1fr auto;
  align-items: center;
  justify-items: center;
  padding: 4vh 4vw;
}

#sf-lightbox-overlay .sf-lightbox-img {
  max-width: 100%;
  max-height: 80vh;
  box-shadow: 0 10px 30px rgba(0,0,0,.55);
  border-radius: 6px;
  background: #111;
  transition: transform .12s ease-out;
  cursor: zoom-out;
}

#sf-lightbox-overlay .sf-lightbox-caption {
  margin-top: 1rem;
  max-width: 100%;
  padding: .4rem .6rem;
  border-radius: 4px;
  background: var(--sf-lb-caption-bg);
  color: var(--sf-lb-caption-fg);
  font-size: .9rem;
}

#sf-lightbox-overlay .sf-lightbox-close {
  position: absolute;
  top: 10px;
  right: 12px;
  background: rgba(0,0,0,.45);
  color: #fff;
  border: none;
  border-radius: 20px;
  width: 34px;
  height: 34px;
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
}

/* Toolbar */
#sf-lightbox-overlay .sf-lightbox-toolbar {
  position: absolute;
  left: 12px;
  bottom: 12px;
  display: inline-flex;
  gap: 8px;
  background: rgba(0,0,0,.35);
  padding: 6px 8px;
  border-radius: 8px;
  backdrop-filter: blur(2px);
}
#sf-lightbox-overlay .sf-lb-btn {
  min-width: 36px;
  height: 28px;
  padding: 0 8px;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 6px;
  background: rgba(30,30,30,.7);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
}
#sf-lightbox-overlay .sf-lb-btn:hover {
  background: rgba(45,45,45,.85);
}

/* Hand cursor when zoomed & panning */
.sf-lightbox-img.is-zoomed {
  cursor: grab;
}
.sf-lightbox-img.is-zoomed.is-panning {
  cursor: grabbing;
}

/* Optional: hover zoom hint */
img:not(.no-lightbox) {
  transition: transform .15s ease-out;
}
img:not(.no-lightbox):hover {
  transform: translateZ(0) scale(1.01);
}