/* =====================================================================
   Document Carousel (PDF Pages in Posts & Replies)
   ===================================================================== */

doc-carousel.doc-carousel {
  position: relative;
  display: block;
  width: 100%;
  max-width: 520px;
  margin-top: 10px;
  border-radius: 14px;
  overflow: hidden;
  background: #f7f6f2;                          /* Warm canvas base */
  border: 1px solid var(--border-subtle, #edebe6);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
}

doc-carousel .doc-track {
  display: flex;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  scroll-behavior: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: none;                         /* Firefox */
  aspect-ratio: var(--doc-ar, 3 / 4);
  max-height: 70vh;
  outline: none;
}

doc-carousel .doc-track::-webkit-scrollbar {
  display: none;                                 /* Safari, Chrome */
}

doc-carousel .doc-track:focus-visible {
  box-shadow: inset 0 0 0 2px var(--accent, #4f46e5);
}

doc-carousel .doc-page {
  flex: 0 0 100%;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #ffffff;
  cursor: zoom-in;
}

doc-carousel .doc-page img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

/* Frosted glass navigation arrows */
doc-carousel .doc-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  background: rgba(13, 17, 23, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #ffffff;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: all 0.15s ease;
}

doc-carousel .doc-nav[hidden] {
  display: none;
}

doc-carousel .doc-prev { left: 10px; }
doc-carousel .doc-next { right: 10px; }

doc-carousel .doc-nav:hover {
  background: rgba(13, 17, 23, 0.85);
  transform: translateY(-50%) scale(1.05);
}

doc-carousel .doc-nav:focus-visible {
  outline: 2px solid #ffffff;
  outline-offset: 2px;
}

/* Glassmorphism Counter & Badges */
doc-carousel .doc-counter,
doc-carousel .doc-badge {
  position: absolute;
  bottom: 10px;
  z-index: 2;
  padding: 3px 8px;
  border-radius: 6px;
  background: rgba(13, 17, 23, 0.72);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #ffffff;
  font-size: 12px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  pointer-events: none;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

doc-carousel .doc-counter { right: 10px; }
doc-carousel .doc-badge { left: 10px; letter-spacing: 0.05em; }

/* Touch devices: swiping is the control */
@media (hover: none) {
  doc-carousel .doc-nav { display: none; }
}

/* =====================================================================
   Media Lightbox Controls
   ===================================================================== */

media-lightbox .nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: #ffffff;
  font-size: 28px;
  line-height: 1;
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: all 0.15s ease;
}

media-lightbox .nav-btn[hidden] { display: none; }
media-lightbox .prev-btn { left: 20px; }
media-lightbox .next-btn { right: 20px; }

media-lightbox .nav-btn:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: translateY(-50%) scale(1.05);
}

media-lightbox .position {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  color: #ffffff;
  font-size: 13px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  background: rgba(13, 17, 23, 0.72);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 4px 12px;
  border-radius: 20px;
}

media-lightbox .position[hidden] { display: none; }

/* =====================================================================
   Composer PDF Attachment Preview
   ===================================================================== */

file-preview-gallery .preview-item.pdf {
  position: relative;
  background: #ffffff;
  border-radius: 10px;
  border: 1px solid var(--border-subtle, #edebe6);
  overflow: hidden;
}

file-preview-gallery .preview-item.pdf .pdf-preview {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  display: block;
}

file-preview-gallery .preview-pdf-badge {
  position: absolute;
  left: 8px;
  bottom: 8px;
  padding: 2px 7px;
  border-radius: 6px;
  background: rgba(13, 17, 23, 0.72);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #ffffff;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
  max-width: calc(100% - 16px);
  overflow: hidden;
  text-overflow: ellipsis;
  pointer-events: none;
}

file-preview-gallery .preview-pdf-badge.is-error {
  background: rgba(239, 68, 68, 0.88);
}

composer-section.preparing {
  cursor: progress;
}

composer-section.preparing .btn-send {
  opacity: 0.6;
  pointer-events: none;
}