.navigating{pointer-events:none;overflow:hidden}.navigating *{transition:opacity .2s ease-in-out}.optimized-link{position:relative;transition:all .2s ease-in-out}.optimized-link:hover{transform:translateY(-1px)}.optimized-link:active{transform:translateY(0)}.navigation-loading{position:relative;overflow:hidden}.navigation-loading:after{content:"";position:absolute;top:0;left:-100%;width:100%;height:2px;background:linear-gradient(90deg,transparent,#3b82f6,transparent);animation:loading-shimmer 1.5s infinite}@keyframes loading-shimmer{0%{left:-100%}to{left:100%}}.lazy{opacity:0;transition:opacity .3s ease-in-out}.lazy.loaded{opacity:1}.preload-indicator{position:fixed;top:0;left:0;width:100%;height:2px;background:#e5e7eb;z-index:9999}.preload-indicator:before{content:"";position:absolute;top:0;left:0;height:100%;background:#3b82f6;width:0;animation:preload-progress .5s ease-out forwards}@keyframes preload-progress{to{width:100%}}.nav-optimized{will-change:transform;backface-visibility:hidden;transform:translateZ(0)}html{scroll-behavior:smooth}.optimized-render{contain:layout style paint}.nav-loading-overlay{position:fixed;inset:0;background:rgba(255,255,255,.8);backdrop-filter:blur(4px);z-index:50;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:all .2s ease-in-out}.nav-loading-overlay.active{opacity:1;visibility:visible}.nav-loading-spinner{width:2rem;height:2rem;border:2px solid #e5e7eb;border-top-color:#3b82f6;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(1turn)}}@media (max-width:768px){.navigating{-webkit-overflow-scrolling:touch}.optimized-link{touch-action:manipulation}}@media (prefers-reduced-motion:reduce){.lazy,.navigation-loading:after,.optimized-link{transition:none;animation:none}html{scroll-behavior:auto}}@media (prefers-contrast:high){.navigation-loading:after{background:linear-gradient(90deg,transparent,#000,transparent)}.preload-indicator:before{background:#000}}