:root{--bg-primary: #1e1e1e;--bg-secondary: #252526;--bg-tertiary: #2d2d30;--bg-hover: #3c3c3c;--text-primary: #d4d4d4;--text-secondary: #808080;--accent-blue: #007acc;--accent-green: #4ec9b0;--accent-orange: #ce9178;--accent-yellow: #dcdcaa;--border-color: #3c3c3c}*{margin:0;padding:0;box-sizing:border-box}html,body,#root{width:100%;height:100%;overflow:hidden;background-color:var(--bg-primary);color:var(--text-primary);font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}.app-container{display:flex;flex-direction:column;height:100vh;width:100vw}.header{height:48px;background-color:var(--bg-secondary);border-bottom:1px solid var(--border-color);display:flex;align-items:center;padding:0 16px;justify-content:space-between}.main-content{flex:1;display:flex;overflow:hidden}.sidebar{width:280px;background-color:var(--bg-secondary);border-right:1px solid var(--border-color);overflow-y:auto}.viewport-container{flex:1;position:relative;overflow:hidden}.footer{height:24px;background-color:var(--bg-secondary);border-top:1px solid var(--border-color);display:flex;align-items:center;padding:0 8px;font-size:12px;color:var(--text-secondary)}.btn{padding:6px 12px;border:none;border-radius:4px;cursor:pointer;font-size:13px;transition:background-color .2s}.btn-primary{background-color:var(--accent-blue);color:#fff}.btn-primary:hover{background-color:#005a9e}.btn-secondary{background-color:var(--bg-tertiary);color:var(--text-primary)}.btn-secondary:hover{background-color:var(--bg-hover)}.panel{padding:12px}.panel-title{font-size:11px;text-transform:uppercase;color:var(--text-secondary);margin-bottom:8px;letter-spacing:.5px}.connection-status{display:flex;align-items:center;gap:6px;font-size:12px}.status-dot{width:8px;height:8px;border-radius:50%}.status-dot.connected{background-color:#4ec9b0}.status-dot.disconnected{background-color:#f14c4c}.status-dot.connecting{background-color:#dcdcaa;animation:pulse 1s infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}#render-canvas{width:100%;height:100%;outline:none}.stats-overlay{position:absolute;top:8px;left:8px;background-color:#1e1e1ee6;border:1px solid var(--border-color);border-radius:4px;padding:8px;font-size:11px;font-family:monospace}.stats-row{display:flex;justify-content:space-between;gap:16px}.stats-label{color:var(--text-secondary)}.stats-value{color:var(--accent-green)}.title-overlay{position:absolute;bottom:8px;right:8px;text-align:right;background-color:#1e1e1eb3;border:1px solid var(--border-color);border-radius:4px;padding:6px 12px}.title-overlay h1{font-size:13px;font-weight:500;color:var(--accent-green);margin-bottom:2px}.title-overlay p{font-size:10px;color:var(--text-secondary)}.menu-bar{display:flex;background-color:transparent;height:28px;padding:0}.menu-item{position:relative}.menu-trigger{background:none;border:none;color:var(--text-primary);padding:4px 10px;font-size:13px;cursor:pointer;height:28px;display:flex;align-items:center}.menu-trigger:hover,.menu-trigger.active{background-color:var(--bg-hover)}.menu-dropdown{position:absolute;top:100%;left:0;background-color:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:4px;min-width:200px;padding:4px 0;z-index:1000;box-shadow:0 4px 12px #0000004d}.menu-dropdown-item{display:flex;align-items:center;width:100%;padding:6px 12px;background:none;border:none;color:var(--text-primary);font-size:13px;cursor:pointer;text-align:left}.menu-dropdown-item:hover:not(.disabled){background-color:var(--accent-blue)}.menu-dropdown-item.disabled{color:var(--text-secondary);cursor:not-allowed}.menu-item-check{width:20px;color:var(--accent-green)}.menu-item-label{flex:1}.menu-item-shortcut{color:var(--text-secondary);font-size:11px;margin-left:16px}.menu-divider{height:1px;background-color:var(--border-color);margin:4px 8px}.telemetry-panel{position:absolute;top:10px;right:10px;width:320px;background:#1e1e1ef2;border:1px solid var(--border-color);border-radius:8px;overflow:hidden}.telemetry-header{display:flex;justify-content:space-between;align-items:center;padding:8px 12px;background:var(--bg-tertiary);border-bottom:1px solid var(--border-color)}.telemetry-title{font-size:12px;font-weight:600;color:var(--accent-green)}.telemetry-close{background:none;border:none;color:var(--text-secondary);cursor:pointer;font-size:16px}.telemetry-content{padding:12px}.telemetry-graph{background:var(--bg-primary);border-radius:4px;margin-bottom:8px}.tutorial-panel{position:absolute;bottom:80px;left:50%;transform:translate(-50%);width:500px;max-width:90%;background:#1e1e1ef2;border:1px solid var(--accent-blue);border-radius:8px;overflow:hidden}.tutorial-header{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:var(--accent-blue)}.tutorial-title{font-size:14px;font-weight:600;color:#fff}.tutorial-close{background:none;border:none;color:#fff;cursor:pointer;font-size:18px}.tutorial-content{padding:16px;font-size:13px;line-height:1.6}.tutorial-step{color:var(--text-secondary);font-size:11px;margin-bottom:8px}.tutorial-instruction{color:var(--text-primary);margin-bottom:12px}.tutorial-buttons{display:flex;justify-content:space-between;margin-top:16px;padding-top:12px;border-top:1px solid var(--border-color)}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:1000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal-container{animation:modalSlideIn .2s ease-out}@keyframes modalSlideIn{0%{opacity:0;transform:scale(.95) translateY(-10px)}to{opacity:1;transform:scale(1) translateY(0)}}.scene-object-item:hover{background:var(--bg-hover)}@keyframes fadeInOut{0%{opacity:0;transform:translate(-50%) translateY(20px)}15%{opacity:1;transform:translate(-50%) translateY(0)}85%{opacity:1;transform:translate(-50%) translateY(0)}to{opacity:0;transform:translate(-50%) translateY(-10px)}}.help-hint{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;background:var(--bg-tertiary);border-radius:4px;font-size:11px;color:var(--text-secondary);cursor:pointer;transition:all .2s ease}.help-hint:hover{background:var(--accent-blue);color:#fff}.help-hint kbd{background:#ffffff1a;padding:1px 4px;border-radius:2px;font-family:monospace}