:root{--bg-dark: #020826;--panel-bg: rgba(7, 18, 48, .75);--panel-border: rgba(0, 229, 255, .25);--text-main: #f1f5f9;--text-muted: #94a3b8;--accent-cyan: #00e5ff;--accent-green: #10b981;--accent-amber: #f59e0b;--accent-red: #ef4444;--accent-blue: #3b82f6;--track-blue: #020d75;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--font-mono: "JetBrains Mono", "Fira Code", Menlo, Monaco, Consolas, monospace}*{box-sizing:border-box;margin:0;padding:0;-webkit-user-select:none;user-select:none}body,html{width:100%;height:100%;overflow:hidden;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background-color:var(--bg-dark);color:var(--text-main)}#app{position:relative;width:100vw;height:100vh;overflow:hidden}#simCanvas{position:absolute;top:0;left:0;width:100%;height:100%;display:block;z-index:1;cursor:grab}#simCanvas:active{cursor:grabbing}.btn{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:var(--radius-sm);font-size:13px;font-weight:600;cursor:pointer;border:1px solid transparent;transition:all .2s ease;outline:none}.btn-primary{background:linear-gradient(135deg,#0284c7,#0369a1);color:#fff;border-color:#38bdf866;box-shadow:0 0 15px #0284c766}.btn-primary:hover{background:linear-gradient(135deg,#0ea5e9,#0284c7);box-shadow:0 0 20px #0ea5e999;transform:translateY(-1px)}.btn-secondary{background:#1e293bb3;color:#e2e8f0;border-color:#94a3b833}.btn-secondary:hover{background:#334155e6;border-color:#94a3b866;color:#fff}.btn-sm{padding:5px 10px;font-size:12px}.top-nav{position:absolute;top:16px;left:16px;right:16px;height:56px;z-index:10;display:flex;align-items:center;justify-content:space-between;padding:0 20px;background:var(--panel-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--panel-border);border-radius:var(--radius-lg);box-shadow:0 8px 32px #0006}.nav-left{display:flex;align-items:center;gap:18px}.brand{display:flex;align-items:center;gap:12px}.brand-icon{font-size:24px}.brand-text h1{font-size:16px;font-weight:700;color:#fff;letter-spacing:.5px}.brand-text .subtitle{font-size:11px;color:var(--accent-cyan);opacity:.85}.status-pill{display:flex;align-items:center;gap:8px;padding:4px 12px;border-radius:20px;background:#10b98126;border:1px solid rgba(16,185,129,.4);font-size:12px;font-weight:600;color:#34d399}.status-pill.running{background:#0ea5e926;border-color:#0ea5e966;color:#38bdf8}.status-pill.stopped{background:#ef444426;border-color:#ef444466;color:#f87171}.status-dot{width:8px;height:8px;border-radius:50%;background-color:currentColor;box-shadow:0 0 8px currentColor}.nav-center{display:flex;align-items:center}.scheme-selector-wrapper{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-muted)}.scheme-selector-wrapper select{background:#0f172ad9;color:#fff;border:1px solid var(--panel-border);border-radius:var(--radius-sm);padding:6px 12px;font-size:13px;font-weight:500;outline:none;cursor:pointer;transition:border-color .2s}.scheme-selector-wrapper select:hover{border-color:var(--accent-cyan)}.nav-right{display:flex;align-items:center;gap:12px}.floating-playback-bar{position:absolute;bottom:24px;left:50%;transform:translate(-50%);z-index:10;display:flex;align-items:center;gap:14px;padding:10px 22px;background:var(--panel-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--panel-border);border-radius:30px;box-shadow:0 10px 40px #00000080}.play-btn{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#00e5ff,#0091ea);color:#03132e;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;box-shadow:0 0 20px #00e5ff80;transition:all .2s ease}.play-btn:hover{transform:scale(1.08);box-shadow:0 0 25px #00e5ffcc}.ctrl-btn{display:flex;align-items:center;gap:6px;padding:8px 14px;background:#1e293bb3;border:1px solid rgba(148,163,184,.2);border-radius:20px;color:#e2e8f0;font-size:13px;font-weight:600;cursor:pointer;transition:all .2s}.ctrl-btn:hover{background:#334155e6;color:#fff;border-color:var(--accent-cyan)}.divider{width:1px;height:24px;background:#94a3b833}.speed-control{display:flex;align-items:center;gap:6px}.speed-control .label{font-size:12px;color:var(--text-muted)}.speed-buttons{display:flex;background:#0f172ab3;border-radius:16px;padding:2px;border:1px solid rgba(148,163,184,.15)}.speed-btn{padding:4px 10px;border-radius:14px;border:none;background:transparent;color:var(--text-muted);font-size:11px;font-weight:600;cursor:pointer;transition:all .15s}.speed-btn:hover{color:#fff}.speed-btn.active{background:var(--accent-cyan);color:#020826;box-shadow:0 0 10px #00e5ff66}.toggle-group{display:flex;align-items:center;gap:12px}.toggle-label{display:flex;align-items:center;gap:6px;font-size:12px;color:#cbd5e1;cursor:pointer}.toggle-label input[type=checkbox]{accent-color:var(--accent-cyan);cursor:pointer}.hud-panel{position:absolute;top:88px;left:16px;width:320px;max-height:calc(100vh - 120px);z-index:10;background:var(--panel-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--panel-border);border-radius:var(--radius-lg);box-shadow:0 8px 32px #0006;display:flex;flex-direction:column;transition:all .3s ease}.hud-panel.collapsed{max-height:48px;overflow:hidden}.hud-header{padding:12px 18px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(148,163,184,.15)}.hud-title{font-size:13px;font-weight:700;letter-spacing:.5px;color:var(--accent-cyan);text-transform:uppercase}.hud-toggle-btn{background:transparent;border:none;color:var(--text-muted);font-size:16px;cursor:pointer}.hud-content{padding:16px;overflow-y:auto;display:flex;flex-direction:column;gap:14px}.section-label{font-size:11px;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px}.sensor-array{display:flex;justify-content:space-between;align-items:center;padding:10px 14px;background:#0f172ab3;border:1px solid rgba(148,163,184,.2);border-radius:var(--radius-md);margin-bottom:10px}.sensor-node{display:flex;flex-direction:column;align-items:center;gap:4px}.sensor-dot{width:18px;height:18px;border-radius:50%;background:#64748b4d;border:1px solid rgba(148,163,184,.4);transition:all .1s ease}.sensor-dot.active{background:#22c55e;border-color:#4ade80;box-shadow:0 0 10px #22c55e;transform:scale(1.1)}.sensor-node span{font-size:10px;color:var(--text-muted);font-family:var(--font-mono)}.metric-row{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--text-muted);padding:3px 0}.metric-row .val{color:#fff;font-weight:600}.metric-row .val.highlight{color:var(--accent-cyan)}.metric-row .val.mono{font-family:var(--font-mono)}.metric-row .val.badge{padding:2px 8px;border-radius:12px;background:#3b82f633;color:#60a5fa;font-size:11px}.metric-row .step-comment{max-width:180px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:#facc15}.metrics-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin-bottom:10px}.grid-card{background:#0f172a99;border:1px solid rgba(148,163,184,.15);border-radius:var(--radius-sm);padding:8px 10px;display:flex;flex-direction:column;gap:2px}.card-label{font-size:10px;color:var(--text-muted);text-transform:uppercase}.card-val{font-size:15px;font-weight:700;color:#fff;font-family:var(--font-mono)}.card-val small{font-size:10px;color:var(--text-muted);font-weight:400}.modal-backdrop{position:absolute;top:0;left:0;width:100%;height:100%;z-index:100;background:#020826cc;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-content{width:90%;max-width:1050px;max-height:85vh;background:#071333;border:1px solid var(--panel-border);border-radius:var(--radius-lg);box-shadow:0 20px 60px #000000b3;display:flex;flex-direction:column;overflow:hidden}.modal-header{padding:16px 24px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(148,163,184,.15)}.modal-header h2{font-size:18px;font-weight:700;color:#fff}.close-btn{background:transparent;border:none;font-size:20px;color:var(--text-muted);cursor:pointer;transition:color .15s}.close-btn:hover{color:#fff}.modal-body{padding:20px 24px;overflow-y:auto;display:flex;flex-direction:column;gap:18px}.modal-toolbar{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;background:#0f172a99;border-radius:var(--radius-md);border:1px solid rgba(148,163,184,.15)}.active-scheme-info{display:flex;align-items:center;gap:10px;font-size:13px}.active-scheme-info .badge{padding:2px 8px;background:#0ea5e933;color:#38bdf8;border-radius:12px;font-size:11px}.table-container{max-height:280px;overflow-y:auto;border:1px solid rgba(148,163,184,.15);border-radius:var(--radius-md)}.route-table{width:100%;border-collapse:collapse;text-align:left;font-size:12px}.route-table th{position:sticky;top:0;background:#0b1a40;color:var(--accent-cyan);padding:10px 12px;font-weight:700;border-bottom:1px solid rgba(148,163,184,.2)}.route-table td{padding:8px 12px;border-bottom:1px solid rgba(148,163,184,.08);color:#e2e8f0}.route-table tr:hover{background:#0ea5e91a}.route-table tr.active-step{background:#00e5ff2e;font-weight:700}.route-table tr.active-step td{color:#fff}.code-viewer-container{background:#030a1c;border:1px solid rgba(148,163,184,.15);border-radius:var(--radius-md);overflow:hidden}.code-header{padding:8px 14px;background:#0f172acc;border-bottom:1px solid rgba(148,163,184,.15);display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--text-muted)}.code-badge{font-size:10px;padding:2px 6px;background:#94a3b826;border-radius:4px}.code-viewer-container pre{max-height:200px;overflow:auto;padding:12px 16px;font-family:var(--font-mono);font-size:12px;line-height:1.5;color:#a5b4fc}.drag-overlay{position:absolute;top:0;left:0;width:100%;height:100%;z-index:200;background:#020d75d9;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center}.drag-box{width:500px;padding:40px;border:3px dashed var(--accent-cyan);border-radius:var(--radius-lg);background:#071230e6;text-align:center;display:flex;flex-direction:column;align-items:center;gap:16px;box-shadow:0 0 50px #00e5ff66}.drag-icon{font-size:54px}.drag-box h3{font-size:20px;color:#fff}.drag-box p{font-size:14px;color:var(--text-muted)}