*{margin:0;padding:0;box-sizing:border-box}#auth-screen{position:fixed;top:0;left:0;width:100vw;height:100vh;background:linear-gradient(135deg,#1a1a2e,#16213e,#0f3460);display:flex;align-items:center;justify-content:center;z-index:9999}.auth-content{text-align:center;color:#fff}.auth-logo{max-width:300px;margin-bottom:30px}#auth-status{font-size:1.1rem;color:#94a3b8;margin-bottom:20px}#auth-login-btn{background:#2563eb;color:#fff;border:none;padding:14px 28px;font-size:1rem;font-weight:600;border-radius:8px;cursor:pointer;transition:background .2s}#auth-login-btn:hover{background:#1d4ed8}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;overflow:hidden;background:#1a1a2e}#map-container{width:100vw;height:100vh;position:relative}#map{width:100%;height:100%}#controls{position:absolute;top:20px;left:80px;background:#fff;padding:20px;border-radius:8px;box-shadow:0 2px 10px #0000004d;z-index:1;min-width:280px}#controls h3{margin-bottom:10px;color:#333}#units-ctrl-btn{font-weight:600;font-size:12px;color:#000}.unit-toggle-btn{background:#f0f0f0;color:#333;padding:6px 12px;font-size:12px;font-weight:600;border:1px solid #ddd;margin:0}.unit-toggle-btn:hover{background:#e0e0e0}.unit-toggle-btn.imperial{background:#3b82f6;color:#fff;border-color:#3b82f6}.unit-toggle-btn.imperial:hover{background:#2563eb}#controls p{margin-bottom:15px;color:#666;font-size:14px}#route-info{background:#f5f5f5;padding:10px;border-radius:4px;margin-bottom:15px}#route-info p{margin:5px 0}button{margin:5px 5px 5px 0;padding:10px 20px;background:#0080ff;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:14px;font-weight:500;transition:background .2s}button:hover:not(:disabled){background:#06c}button:disabled{background:#ccc;cursor:not-allowed}#reset-btn{background:#f44}#reset-btn:hover{background:#c00}#section-container{display:none;width:100vw;height:100vh;padding:20px;background:#f5f5f5;overflow:auto}#section-controls{background:#fff;padding:20px;border-radius:8px;box-shadow:0 2px 10px #0000001a;margin-bottom:20px;display:flex;align-items:center;gap:20px}#section-info{margin-left:auto;display:flex;gap:20px}#section-info p{margin:0;font-size:14px;color:#666}#view-map-btn{background:#666}#view-map-btn:hover{background:#444}#export-btn{background:#22c55e}#export-btn:hover{background:#16a34a}#adjust-route-btn{background:#8b5cf6}#adjust-route-btn:hover{background:#7c3aed}#apply-route-btn{background:#22c55e}#apply-route-btn:hover{background:#16a34a}#cancel-adjust-btn{background:#6b7280}#cancel-adjust-btn:hover{background:#4b5563}#views-container{display:flex;gap:20px;flex-wrap:wrap}#plan-view-wrapper{background:#fff;border-radius:8px;box-shadow:0 2px 10px #0000001a;padding:20px;flex:0 0 400px;min-height:450px}#plan-view-wrapper h4{margin:0 0 15px;color:#333;font-size:16px}#plan-view{width:100%;height:400px;border-radius:4px;overflow:hidden}#section-view-wrapper{background:#fff;border-radius:8px;box-shadow:0 2px 10px #0000001a;padding:20px;flex:1;min-width:600px;min-height:450px}#section-view-wrapper h4{margin:0 0 15px;color:#333;font-size:16px}#section-view{min-height:400px}#hdd-controls{background:#fff;padding:15px 20px;border-radius:8px;box-shadow:0 2px 10px #0000001a;margin-bottom:20px}#hdd-controls h4{margin:0 0 15px;color:#333;font-size:16px}.hdd-params-grid{display:flex;flex-wrap:wrap;gap:15px;align-items:flex-end}.param-group{display:flex;flex-direction:column;gap:5px}.param-group label{font-size:12px;color:#666;font-weight:500}.param-group input,.param-group select{padding:8px 12px;border:1px solid #ddd;border-radius:4px;font-size:14px;width:120px}.param-group input:focus,.param-group select:focus{outline:none;border-color:#0080ff;box-shadow:0 0 0 2px #0080ff33}.param-hint{font-size:10px;color:#999;margin-top:2px}#recalculate-hdd{background:#ff4500;margin-left:auto}#recalculate-hdd:hover{background:#cc3700}#tooltip{position:absolute;display:none;background:#fff;padding:12px;border-radius:6px;box-shadow:0 4px 12px #00000026;font-size:13px;pointer-events:none;z-index:1000;max-width:250px}#tooltip strong{display:block;margin-bottom:5px;color:#333}#tooltip br{margin:3px 0}#loading-spinner{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:#fff;padding:30px;border-radius:8px;box-shadow:0 4px 20px #0003;z-index:2000;text-align:center}.spinner{width:50px;height:50px;border:4px solid #f3f3f3;border-top:4px solid #0080ff;border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 15px}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}#loading-spinner p{color:#666;margin:0}.ground-surface{transition:opacity .3s}.ground-line{transition:stroke .3s}svg rect{cursor:pointer;transition:opacity .2s}svg rect:hover{opacity:.8}svg text{pointer-events:none;-webkit-user-select:none;user-select:none}.axis path,.axis line{fill:none;stroke:#999;shape-rendering:crispEdges}.axis text{fill:#666;font-size:11px}