/* Shared Slide Viewer Styles */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { background: #000; color: #fff; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; overflow: hidden; height: 100vh; display: flex; flex-direction: column; }
.header { background: #000; backdrop-filter: none; }
.slide-subheader { position: fixed; top: var(--header-height, 72px); left: 0; right: 0; height: 56px; background: rgba(0, 0, 0, 0.95); -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px); border-bottom: 1px solid rgba(255, 255, 255, 0.1); display: flex; align-items: center; justify-content: space-between; padding: 0 24px 0 0; z-index: 90; }
.subheader-left { display: flex; align-items: center; gap: 12px; flex: 1; }
.back-btn { display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; margin-left: 40px; color: rgba(255, 255, 255, 0.7); text-decoration: none; transition: all 0.2s; }
.back-btn:hover { color: #fff; background: rgba(255, 255, 255, 0.1); border-radius: 6px; }
.back-btn svg { width: 20px; height: 20px; }
.sidebar-toggle { display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; background: rgba(255, 255, 255, 0.1); border: 1px solid rgba(255, 255, 255, 0.2); border-radius: 6px; cursor: pointer; transition: all 0.2s; margin-right: 16px; }
.sidebar-toggle:hover { background: rgba(255, 255, 255, 0.15); }
.sidebar-toggle svg { width: 20px; height: 20px; stroke: #fff; }
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 14px; color: rgba(255, 255, 255, 0.7); }
.breadcrumb-link { color: rgba(255, 255, 255, 0.5); text-decoration: none; transition: color 0.2s; }
.breadcrumb-link:hover { color: rgba(255, 255, 255, 0.8); }
.breadcrumb-separator { color: rgba(255, 255, 255, 0.3); }
.breadcrumb-current { color: #fff; font-weight: 500; }
.subheader-right { display: flex; align-items: center; gap: 24px; }
.slide-counter { font-size: 14px; color: rgba(255, 255, 255, 0.5); font-variant-numeric: tabular-nums; }
.slideshare-link { display: flex; align-items: center; gap: 6px; color: rgba(255, 255, 255, 0.7); text-decoration: none; font-size: 13px; padding: 6px 12px; border: 1px solid rgba(255, 255, 255, 0.2); border-radius: 6px; transition: all 0.2s; }
.slideshare-link:hover { background: rgba(255, 255, 255, 0.1); border-color: rgba(255, 255, 255, 0.3); color: #fff; }
.slideshare-link svg { width: 16px; height: 16px; }
.viewer-body { display: flex; flex: 1; margin-top: calc(var(--header-height, 72px) + 56px); position: relative; overflow: hidden; }
.sidebar { width: 280px; background: rgba(10, 10, 10, 0.95); border-right: 1px solid rgba(255, 255, 255, 0.1); overflow-y: auto; padding: 16px 16px 16px 40px; transition: margin-left 0.3s ease; }
.sidebar.collapsed { margin-left: -280px; }
.sidebar-header { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: rgba(255, 255, 255, 0.5); margin-bottom: 12px; }
.thumbnail-grid { display: flex; flex-direction: column; gap: 8px; }
.thumbnail-item { cursor: pointer; border-radius: 6px; overflow: hidden; border: 2px solid transparent; transition: all 0.2s; position: relative; }
.thumbnail-item:hover { border-color: rgba(255, 255, 255, 0.3); }
.thumbnail-item.active { border-color: #8b5cf6; }
.thumbnail-item img { width: 100%; height: auto; display: block; }
.thumbnail-number { position: absolute; top: 6px; left: 6px; background: rgba(0, 0, 0, 0.8); color: #fff; font-size: 11px; font-weight: 600; padding: 3px 8px; border-radius: 4px; }
.slide-container { flex: 1; display: flex; align-items: center; justify-content: center; padding: 20px; position: relative; transition: margin-left 0.3s ease; }
.slide-container.sidebar-collapsed { margin-left: 0; }
.slide-image { max-width: 100%; max-height: 100%; width: auto; height: auto; object-fit: contain; box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5); border-radius: 4px; }
.nav-button { position: absolute; top: 50%; transform: translateY(-50%); width: 48px; height: 48px; background: rgba(255, 255, 255, 0.1); border: 1px solid rgba(255, 255, 255, 0.2); border-radius: 50%; display: flex; align-items: center; justify-content: center; cursor: pointer; transition: all 0.2s; z-index: 10; }
.nav-button:hover { background: rgba(255, 255, 255, 0.2); border-color: rgba(255, 255, 255, 0.3); }
.nav-button:active { transform: translateY(-50%) scale(0.95); }
.nav-button.prev { left: 20px; }
.nav-button.next { right: 20px; }
.nav-button svg { width: 24px; height: 24px; stroke: #fff; }
.keyboard-hint { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); color: rgba(255, 255, 255, 0.3); font-size: 12px; display: flex; gap: 16px; z-index: 50; }
.keyboard-hint kbd { padding: 4px 8px; background: rgba(255, 255, 255, 0.1); border-radius: 4px; font-family: inherit; }
.preload { position: absolute; left: -9999px; top: -9999px; }
.sidebar::-webkit-scrollbar { width: 8px; }
.sidebar::-webkit-scrollbar-track { background: rgba(255, 255, 255, 0.05); }
.sidebar::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.2); border-radius: 4px; }
.sidebar::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, 0.3); }
@media (max-width: 768px) {
  .slide-subheader { padding: 0 16px 0 0; height: 50px; top: 64px; }
  .back-btn { margin-left: 16px; }
  .breadcrumb { font-size: 12px; }
  .breadcrumb-link { display: none; }
  .breadcrumb-separator:first-of-type { display: none; }
  .slide-counter { font-size: 12px; }
  .slideshare-link span { display: none; }
  .viewer-body { margin-top: calc(64px + 50px); }
  .sidebar { position: absolute; left: 0; top: 0; bottom: 0; z-index: 50; margin-left: 0; }
  .sidebar.collapsed { margin-left: -280px; }
  .slide-container { padding: 10px; }
  .keyboard-hint { display: none; }
  .nav-button { width: 40px; height: 40px; }
  .nav-button.prev { left: 10px; }
  .nav-button.next { right: 10px; }
}