#app-loader{position:fixed;top:0;left:0;width:100%;height:100%;background:#f3f4f6;display:flex;align-items:center;justify-content:center;z-index:9999;transition:opacity .3s ease}#app-loader.hidden{opacity:0;pointer-events:none}.loader-spinner{width:50px;height:50px;border:4px solid #e5e7eb;border-top-color:#1e3a8a;border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}