.scroll-sentinel{height:1px;width:100%;visibility:hidden}.loading-indicator{display:none;text-align:center;padding:2rem 0;margin:2rem 0}.loading-indicator.active{display:block}.spinner{display:inline-block;width:40px;height:40px;border:4px solid rgba(0,0,0,0.1);border-left-color:#333;border-radius:50%;animation:spin 1s linear infinite;margin-bottom:1rem}@keyframes spin{0%{transform:rotate(0deg)}100%{transform:rotate(360deg)}}.loading-indicator span{display:block;color:#666;font-size:0.9rem}.photo-item{opacity:1;transition:opacity 0.3s ease-in}.photo-item.loading{opacity:0}.photo-item.loaded{opacity:1}.infinite-scroll-error{background-color:#fff3cd;border:1px solid #ffc107;border-radius:4px;padding:1rem;margin:2rem 0;text-align:center}.infinite-scroll-error p{margin:0.5rem 0;color:#856404}.error-details{font-size:0.85rem;font-family:monospace;color:#666}.photo-skeleton{background:linear-gradient(90deg,#f0f0f0 25%,#e0e0e0 50%,#f0f0f0 75%);background-size:200% 100%;animation:skeleton-loading 1.5s ease-in-out infinite}@keyframes skeleton-loading{0%{background-position:200% 0}100%{background-position:-200% 0}}.pagination.infinite-scroll-active{display:none}html{scroll-behavior:smooth}img[loading="lazy"]{min-height:200px;background-color:#f5f5f5}.photographs-list{position:relative}img.loading{opacity:0.5}img.loaded{opacity:1;transition:opacity 0.3s ease-in}@media (max-width:768px){.spinner{width:32px;height:32px;border-width:3px}.loading-indicator{padding:1.5rem 0;margin:1.5rem 0}}@media (prefers-color-scheme:dark){.spinner{border-color:rgba(255,255,255,0.1);border-left-color:#fff}.loading-indicator span{color:#ccc}.infinite-scroll-error{background-color:#332b00;border-color:#997404}.infinite-scroll-error p{color:#ffc107}.error-details{color:#999}img[loading="lazy"]{background-color:#2a2a2a}}@media (prefers-reduced-motion:reduce){.photo-item,img.loaded,html{transition:none;animation:none;scroll-behavior:auto}.spinner{animation-duration:2s}}@media print{.loading-indicator,.scroll-sentinel,.infinite-scroll-error{display:none}.photo-item{opacity:1!important;page-break-inside:avoid}}