/* ============================================================
   Lightbox — shared component.
   Self-contained: discovers triggers by class on init, no
   per-page configuration needed.
   Markup contract: each page that uses the lightbox needs
     <div class="lightbox" role="dialog" aria-modal="true" aria-hidden="true" aria-label="…">
       <button class="lightbox__close" type="button" aria-label="Close">×</button>
       <img class="lightbox__image" src="" alt="">
     </div>
   Triggers are any element with class .howit-screenshot__trigger
   containing an <img> child.
   z-index 10000 — above all page layers.
   ============================================================ */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  background: rgba(17, 17, 17, 0.82);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}
.lightbox--open {
  opacity: 1;
  visibility: visible;
}
.lightbox__image {
  display: block;
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  min-width: 0; /* override flex's min-width: auto so max-width actually clamps */
  min-height: 0;
  border-radius: 6px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
  cursor: default;
}
.lightbox__close {
  position: absolute;
  top: 18px;
  right: 22px;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  font-family: var(--font);
  font-size: 1.6rem;
  font-weight: 400;
  line-height: 1;
  cursor: pointer;
  transition: background 0.2s ease;
}
.lightbox__close:hover {
  background: rgba(255, 255, 255, 0.25);
}
.lightbox__close:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

@media (max-width: 768px) {
  .lightbox { padding: 16px; }
  .lightbox__close { top: 10px; right: 12px; }
}