/* ===== VIEWER ===== */
.viewer-body {
  background: var(--dark);
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.viewer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  background: var(--dark2);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  z-index: 50;
}

.back-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  text-decoration: none;
  font-family: var(--font-urdu);
  font-size: 0.9rem;
  direction: rtl;
  transition: color 0.2s;
}
.back-btn:hover { color: var(--gold); }

.viewer-logo img { height: 44px; object-fit: contain; }

.edition-info {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--text-muted);
  direction: ltr;
}

/* Shell */
.viewer-shell {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* Sidebar */
.page-sidebar {
  width: 110px;
  background: var(--dark2);
  border-left: 1px solid var(--border);
  overflow-y: auto;
  flex-shrink: 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
  transition: width 0.3s;
}
.page-sidebar.collapsed { width: 0; overflow: hidden; }

.sidebar-header {
  padding: 12px 8px;
  font-family: var(--font-urdu);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--dark2);
}

.sidebar-pages {
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sidebar-thumb {
  position: relative;
  cursor: pointer;
  border-radius: 6px;
  overflow: hidden;
  border: 2px solid transparent;
  transition: border-color 0.2s;
  background: var(--dark3);
  aspect-ratio: 3/4;
}
.sidebar-thumb:hover, .sidebar-thumb.active { border-color: var(--gold); }
.sidebar-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }

.thumb-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-family: var(--font-display);
}

.thumb-num {
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.65rem;
  color: var(--white);
  background: rgba(0,0,0,0.7);
  padding: 1px 5px;
  border-radius: 3px;
}

/* Main Viewer */
.viewer-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Toolbar */
.viewer-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  background: var(--dark3);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  gap: 12px;
}

.toolbar-left, .toolbar-right {
  display: flex;
  align-items: center;
  gap: 6px;
}
.toolbar-center {
  display: flex;
  align-items: center;
  gap: 12px;
  direction: rtl;
}

.tool-btn {
  width: 36px; height: 36px;
  background: var(--dark4);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}
.tool-btn:hover { background: var(--gold); color: var(--dark); border-color: var(--gold); }

.page-indicator {
  font-family: var(--font-urdu);
  font-size: 0.9rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.zoom-level {
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--text-muted);
  min-width: 40px;
  text-align: center;
  direction: ltr;
}

/* Canvas */
.viewer-canvas {
  flex: 1;
  overflow: hidden;
  position: relative;
  cursor: grab;
}
.viewer-canvas.dragging { cursor: grabbing; }

.page-wrapper {
  display: flex;
  height: 100%;
  width: 100%;
  transition: transform 0.35s cubic-bezier(0.4,0,0.2,1);
}

.viewer-page {
  flex-shrink: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.page-image {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 4px;
  box-shadow: var(--shadow);
  user-select: none;
  transform-origin: center center;
  transition: transform 0.2s;
}

.page-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  color: var(--text-muted);
  font-family: var(--font-urdu);
}

/* Page Dots (mobile) */
.page-dots {
  display: none;
  justify-content: center;
  gap: 6px;
  padding: 10px;
  background: var(--dark2);
  border-top: 1px solid var(--border);
}
.dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--dark4);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.2s;
}
.dot.active { background: var(--gold); }

/* Edition Strip */
.edition-strip {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 20px;
  background: var(--dark2);
  border-top: 1px solid var(--border);
  overflow-x: auto;
  scrollbar-width: none;
  flex-shrink: 0;
  direction: rtl;
}
.edition-strip::-webkit-scrollbar { display: none; }

.strip-label {
  font-family: var(--font-urdu);
  font-size: 0.78rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.strip-pill {
  padding: 3px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-family: var(--font-body);
  color: var(--text-muted);
  border: 1px solid rgba(201,168,76,0.2);
  text-decoration: none;
  transition: all 0.2s;
  white-space: nowrap;
  direction: ltr;
}
.strip-pill:hover, .strip-pill.active {
  background: var(--gold);
  color: var(--dark);
  border-color: var(--gold);
}

/* Responsive */
@media (max-width: 768px) {
  .page-sidebar { width: 80px; }
  .page-dots { display: flex; }
  .toolbar-right .tool-btn:last-child { display: none; }
  .edition-strip { display: none; }
  .viewer-header { padding: 8px 12px; }
}

@media (max-width: 480px) {
  .page-sidebar { display: none; }
}