:root{--bg:#f7f8fa;--panel:#fff;--ink:#1c2430;--muted:#657081;--line:#d9dee7;--accent:#126b68;--accent-dark:#0d4f4d;--danger:#a93636}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:Arial,Helvetica,sans-serif}button,input,select{font:inherit}button{min-height:42px;border:0;border-radius:6px;background:var(--accent);color:#fff;cursor:pointer;font-weight:700;padding:0 16px}button:hover{background:var(--accent-dark)}button.secondary{background:#e8ecef;color:var(--ink)}button.secondary:hover{background:#dce2e7}button.danger{background:var(--danger)}button.danger:hover{background:#842a2a}input,select{width:100%;min-height:42px;border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--ink);padding:8px 10px}label{display:grid;grid-gap:6px;gap:6px;color:var(--muted);font-size:14px;font-weight:700}.login-shell{display:grid;min-height:100vh;place-items:center;padding:24px}.login-panel{width:min(420px,100%);border:1px solid var(--line);border-radius:8px;background:var(--panel);padding:28px}.app-shell{width:min(1440px,100%);margin:0 auto;padding:24px}.topbar{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;padding-bottom:20px}.topbar-actions{display:flex;flex-wrap:wrap;gap:10px}.eyebrow{margin:0 0 4px;color:var(--accent);font-size:13px;font-weight:800;text-transform:uppercase}.eyebrow,h1,h2{letter-spacing:0}h1,h2{margin:0}h1{font-size:30px}h2{font-size:18px}.notice,.status-text{border-left:4px solid var(--accent);background:#eef7f6;color:var(--ink);margin:0 0 18px;padding:12px 14px}.notice.error{border-color:var(--danger);background:#fff1f1}.metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-gap:12px;gap:12px;margin-bottom:18px}.metric{border:1px solid var(--line);border-radius:8px;background:var(--panel);padding:16px}.metric span{display:block;color:var(--muted);font-size:13px;font-weight:700}.metric strong{display:block;margin-top:8px;font-size:30px}.workspace{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:14px;gap:14px}.panel,.table-section{border:1px solid var(--line);border-radius:8px;background:var(--panel);padding:18px}.form-grid,.form-stack{display:grid;grid-gap:14px;gap:14px;margin-top:16px}.form-grid{grid-template-columns:repeat(2,minmax(0,1fr));align-items:end}.form-grid button{width:100%}.table-section{margin-top:18px}.table-section h2{margin-bottom:12px}.table-wrap{width:100%;overflow-x:auto}table{width:100%;min-width:720px;border-collapse:collapse}td,th{border-bottom:1px solid var(--line);padding:11px 8px;text-align:left;vertical-align:top}th{color:var(--muted);font-size:13px}@media (max-width:900px){.topbar{align-items:flex-start;flex-direction:column}.metrics,.workspace{grid-template-columns:1fr}}@media (max-width:560px){.app-shell{padding:14px}.form-grid{grid-template-columns:1fr}h1{font-size:24px}.topbar-actions,.topbar-actions button{width:100%}}.sim-shell{display:grid;grid-template-columns:360px minmax(0,1fr);min-height:100vh;background:#111519;color:#f8fafc}.sim-sidebar{display:flex;flex-direction:column;gap:18px;border-right:1px solid #2d3742;background:#f7f8fa;color:var(--ink);padding:22px;overflow-y:auto}.sim-list,.sim-pairing,.sim-status-block{border:1px solid var(--line);border-radius:8px;background:#fff;padding:16px}.sim-pairing span,.sim-status-block span{display:block;color:var(--muted);font-size:13px;font-weight:800;text-transform:uppercase}.sim-status-block strong{display:block;margin-top:5px;font-size:22px}.sim-list p,.sim-status-block p{margin:8px 0 0;color:var(--muted);line-height:1.4}.sim-pairing strong{display:block;margin-top:10px;font-size:44px;letter-spacing:0}.sim-meta{display:grid;grid-gap:10px;gap:10px;margin:0}.sim-meta div{border-bottom:1px solid var(--line);padding-bottom:10px}.sim-meta div:last-child{border-bottom:0;padding-bottom:0}.sim-meta dt{color:var(--muted);font-size:13px;font-weight:800}.sim-meta dd{margin:4px 0 0;font-weight:700;overflow-wrap:anywhere}.sim-controls{display:grid;grid-gap:10px;gap:10px}.sim-controls button:disabled{cursor:not-allowed;opacity:.5}.sim-list h2{margin-bottom:12px}.sim-list ol{display:grid;grid-gap:8px;gap:8px;list-style:none;margin:0;padding:0}.sim-list li button{display:grid;width:100%;min-height:54px;justify-items:start;background:#eef2f5;color:var(--ink);text-align:left}.sim-list li.active button{background:var(--accent);color:#fff}.sim-list small{color:inherit;font-weight:400;opacity:.8}.sim-stage{display:grid;min-width:0;min-height:100vh;place-items:center;background:#05070a}.sim-frame,.sim-media{width:100%;height:100vh;border:0;background:#05070a}.sim-media{object-fit:contain}.sim-frame{display:block}.sim-empty{display:grid;grid-gap:10px;gap:10px;place-items:center;padding:24px;text-align:center}.sim-empty p{margin:0;color:#aab4c0;font-size:18px}.sim-empty strong{font-size:clamp(44px,10vw,120px);letter-spacing:0}@media (max-width:980px){.sim-shell{grid-template-columns:1fr}.sim-sidebar{border-right:0;border-bottom:1px solid #2d3742}.sim-frame,.sim-media,.sim-stage{min-height:58vh;height:58vh}}@media (max-width:560px){.sim-sidebar{padding:14px}.sim-pairing strong{font-size:36px}}