.app{color:#e0e0e0;background:linear-gradient(135deg,#0f0c29 0%,#1a1a2e 50%,#16213e 100%);flex-direction:column;justify-content:center;align-items:center;width:100vw;height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;display:flex;overflow:hidden}.app-header{text-align:center;margin-bottom:2rem}.app-header h1{background:linear-gradient(135deg,#667eea,#764ba2);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin:0 0 .5rem;font-size:2.5rem;font-weight:700}.app-subtitle{color:#88a;margin:0;font-size:1rem}.upload-container{width:100%;max-width:500px;padding:0 1rem}.upload-zone{text-align:center;cursor:pointer;background:#ffffff08;border:2px dashed #446;border-radius:16px;padding:3rem 2rem;transition:all .3s}.upload-zone:hover{background:#667eea0d;border-color:#667eea}.upload-zone.drag-over{background:#764ba21a;border-color:#764ba2;transform:scale(1.02)}.upload-zone.loading{cursor:wait;pointer-events:none}.upload-icon{color:#667eea;margin-bottom:1rem}.upload-zone h2{color:#ccc;margin:0 0 .5rem;font-size:1.3rem}.upload-zone p{color:#888;margin:.3rem 0;font-size:.9rem}.upload-hint{color:#666!important;margin-top:.8rem!important;font-size:.8rem!important}.upload-loading{flex-direction:column;align-items:center;gap:1rem;display:flex}.spinner{border:3px solid #333;border-top-color:#667eea;border-radius:50%;width:40px;height:40px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.progress-bar-container{width:100%;max-width:500px;margin-top:1.5rem;padding:0 1rem;position:relative}.progress-bar{background:linear-gradient(90deg,#667eea,#764ba2);border-radius:2px;height:4px;transition:width .3s}.progress-text{text-align:center;color:#888;margin-top:.5rem;font-size:.8rem;display:block}.error-message{text-align:center;background:#f443361a;border:1px solid #f443364d;border-radius:8px;max-width:500px;margin-top:1.5rem;padding:1rem 1.5rem}.error-message p{color:#ff6b6b;margin:0 0 .8rem;font-size:.9rem}.error-message button{color:#ff6b6b;cursor:pointer;background:0 0;border:1px solid #ff6b6b;border-radius:4px;padding:.3rem 1rem;font-size:.85rem}.error-message button:hover{background:#f443361a}.app.viewer-mode{flex-direction:row;justify-content:stretch;align-items:stretch}.viewer-container{flex:1;height:100vh;position:relative;overflow:hidden}.sidebar{background:#0f0c29f2;border-left:1px solid #2a2a4a;flex-direction:column;flex-shrink:0;width:320px;height:100vh;display:flex;overflow-y:auto}.sidebar-header{border-bottom:1px solid #2a2a4a;padding:1rem 1.2rem}.sidebar-header h2{background:linear-gradient(135deg,#667eea,#764ba2);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin:0;font-size:1.2rem}.track-stats{border-bottom:1px solid #2a2a4a;padding:1rem 1.2rem}.stats-title{color:#ccc;white-space:nowrap;text-overflow:ellipsis;margin:0 0 .8rem;font-size:1rem;overflow:hidden}.stats-grid{grid-template-columns:1fr 1fr;gap:.6rem;display:grid}.stat-item{flex-direction:column;gap:.2rem;display:flex}.stat-label{color:#888;text-transform:uppercase;letter-spacing:.5px;font-size:.75rem}.stat-value{color:#e0e0e0;font-variant-numeric:tabular-nums;font-size:.95rem;font-weight:600}.control-panel{flex-direction:column;gap:1rem;padding:1rem 1.2rem;display:flex}.control-section{flex-direction:column;gap:.5rem;display:flex}.control-label{color:#999;text-transform:uppercase;letter-spacing:.5px;justify-content:space-between;align-items:center;font-size:.8rem;display:flex}.control-value{color:#667eea;font-weight:600}.view-mode-buttons,.map-source-buttons{grid-template-columns:1fr 1fr;gap:.4rem;display:grid}.map-source-buttons{grid-template-columns:1fr 1fr 1fr;margin-top:.4rem}.view-btn{color:#aaa;cursor:pointer;background:#ffffff0d;border:1px solid #333;border-radius:6px;padding:.5rem;font-size:.85rem;transition:all .2s}.view-btn:hover{color:#ccc;background:#667eea1a;border-color:#667eea}.view-btn.active{color:#667eea;background:#667eea33;border-color:#667eea}.range-slider{appearance:none;background:#333;border-radius:2px;outline:none;width:100%;height:4px}.range-slider::-webkit-slider-thumb{-webkit-appearance:none;cursor:pointer;background:#667eea;border-radius:50%;width:16px;height:16px}.range-slider::-moz-range-thumb{cursor:pointer;background:#667eea;border:none;border-radius:50%;width:16px;height:16px}.control-toggle{cursor:pointer;color:#aaa;align-items:center;gap:.5rem;font-size:.85rem;display:flex}.control-toggle input[type=checkbox]{accent-color:#667eea;cursor:pointer;width:16px;height:16px}.reset-btn{color:#ff6b6b;cursor:pointer;background:#f443361a;border:1px solid #f443364d;border-radius:8px;width:100%;margin-top:.5rem;padding:.7rem;font-size:.85rem;transition:all .2s}.reset-btn:hover{background:#f4433633}.elevation-profile{border-bottom:1px solid #2a2a4a;padding:.8rem 1.2rem}.profile-title{color:#999;text-transform:uppercase;letter-spacing:.5px;margin:0 0 .5rem;font-size:.8rem}@media (width<=768px){.app.viewer-mode{flex-direction:column}.viewer-container{height:60vh}.sidebar{border-top:1px solid #2a2a4a;border-left:none;width:100%;height:40vh}.stats-grid{grid-template-columns:1fr 1fr;gap:.4rem}.app-header h1{font-size:1.8rem}.upload-zone{padding:2rem 1.5rem}}@media (width<=480px){.view-mode-buttons{grid-template-columns:1fr 1fr}.sidebar{height:45vh}.viewer-container{height:55vh}}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{width:100%;height:100%;overflow:hidden}body{color:#e0e0e0;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#0f0c29}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#444;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#555}