.pdf-lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9998;
  padding: 2vmin;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease;
}
.pdf-lightbox.is-open {
  opacity: 1;
  pointer-events: auto;
}
.pdf-lightbox__dialog {
  position: relative;
  width: min(1100px, 96vw);
  height: min(90vh, 100%);
  background: #fff;
  border-radius: 6px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.pdf-lightbox__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 0.9rem;
  border-bottom: 1px solid #e6e6e6;
  font-size: 0.92rem;
  background: #f5f5f5;
}
.pdf-lightbox__title {
  font-weight: 600;
  color: #222;
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1 1 auto;
  padding-right: 0.8rem;
}
.pdf-lightbox__actions {
  display: flex;
  gap: 0.5rem;
  flex: 0 0 auto;
}
.pdf-lightbox__action {
  font: inherit;
  font-size: 0.88rem;
  padding: 0.3rem 0.7rem;
  border: 1px solid #c4c4c4;
  background: #fff;
  border-radius: 4px;
  cursor: pointer;
  text-decoration: none;
  color: #222;
  line-height: 1.2;
}
.pdf-lightbox__action:hover,
.pdf-lightbox__action:focus {
  background: #ececec;
  outline: none;
}
.pdf-lightbox__close {
  appearance: none;
  border: none;
  background: transparent;
  font-size: 1.6rem;
  line-height: 1;
  width: 2rem;
  height: 2rem;
  cursor: pointer;
  color: #555;
  border-radius: 4px;
}
.pdf-lightbox__close:hover,
.pdf-lightbox__close:focus {
  background: #ececec;
  color: #000;
  outline: none;
}
.pdf-lightbox__frame {
  flex: 1 1 auto;
  width: 100%;
  border: 0;
  background: #fafafa;
}
body.pdf-lightbox-open {
  overflow: hidden;
}
@media (max-width: 600px) {
  .pdf-lightbox { padding: 0; }
  .pdf-lightbox__dialog {
    width: 100vw;
    height: 100vh;
    border-radius: 0;
  }
}