:root{
  --win-gray:#c0c0c0;--win-light:#fff;--win-mid:#dfdfdf;--win-dark:#808080;--win-black:#000;
  --title:#000080;--desktop:#008080;--panel:#bdbdbd;--screen:#0a1714;--screen-text:#9fd6a8;
  --amber:#d89a24;--green:#2bd45f;--red:#e83a2f;--blue:#1a4dff;
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;background:var(--desktop);font-family:"MS Sans Serif",Tahoma,Arial,sans-serif;font-size:12px;color:#000}
button,input,select,textarea{font:inherit;color:#000}
button{border-radius:0}
.desktop{min-height:100vh;padding:10px;background:var(--desktop)}
.window{position:relative;min-width:1040px;max-width:1600px;margin:0 auto;background:var(--win-gray);border-top:2px solid #fff;border-left:2px solid #fff;border-right:2px solid #000;border-bottom:2px solid #000;box-shadow:1px 1px 0 #404040}
.titlebar{height:27px;display:flex;align-items:center;justify-content:space-between;padding:2px 3px 2px 5px;background:linear-gradient(90deg,#000080,#1084d0);color:white;font-weight:700;letter-spacing:.2px}
.titlebar-title{display:flex;align-items:center;gap:6px}.app-icon{font-size:13px;width:16px;height:16px;display:inline-grid;place-items:center;background:#c0c0c0;color:#000;border:1px outset #eee}
.window-controls{display:flex;gap:2px}.window-controls button{width:20px;height:19px;line-height:13px;padding:0;background:#c0c0c0;border-top:2px solid #fff;border-left:2px solid #fff;border-right:2px solid #000;border-bottom:2px solid #000;font-weight:700}
.menubar{height:25px;padding:2px 4px;display:flex;align-items:center;gap:2px;border-bottom:1px solid #808080}
.menu-button{background:transparent;border:1px solid transparent;padding:2px 8px;text-align:left}.menu-button:hover,.menu-button:focus{border:1px dotted #000;outline:none}.menu-button::first-letter{text-decoration:underline}
.menu-popup{position:absolute;z-index:30;top:53px;left:6px;min-width:180px;background:#c0c0c0;border-top:2px solid #fff;border-left:2px solid #fff;border-right:2px solid #000;border-bottom:2px solid #000;padding:3px;box-shadow:2px 2px 0 rgba(0,0,0,.4)}
.menu-popup button{display:block;width:100%;padding:5px 22px 5px 8px;text-align:left;background:transparent;border:0}.menu-popup button:hover{background:#000080;color:#fff}
.toolbar{display:flex;align-items:center;gap:5px;padding:5px;border-bottom:1px solid #808080;min-height:36px}.toolbar-separator{width:2px;height:24px;border-left:1px solid #808080;border-right:1px solid #fff;margin:0 2px}.toolbar-label{font-size:10px;font-weight:700;margin-left:2px}.prototype-flag{margin-left:auto;padding:4px 7px;border:1px solid #000;background:#fff3a6;font-weight:700;font-size:10px;letter-spacing:.4px}
.win-button,.square-button{background:#c0c0c0;border-top:2px solid #fff;border-left:2px solid #fff;border-right:2px solid #000;border-bottom:2px solid #000;padding:4px 9px;min-height:24px}.win-button:active,.square-button:active{border-top:2px solid #000;border-left:2px solid #000;border-right:2px solid #fff;border-bottom:2px solid #fff;padding:5px 8px 3px 10px}.win-button:focus,.square-button:focus{outline:1px dotted #000;outline-offset:-4px}
.win-select,.win-input{height:23px;background:#fff;border-top:2px solid #808080;border-left:2px solid #808080;border-right:2px solid #fff;border-bottom:2px solid #fff;padding:2px 4px}.win-select{min-width:205px}
.sunken{border-top:2px solid #808080;border-left:2px solid #808080;border-right:2px solid #fff;border-bottom:2px solid #fff}
.project-strip{margin:5px;padding:5px 7px;display:grid;grid-template-columns:1.2fr 1fr 1.4fr .7fr;gap:10px;background:#d6d6d6}.field-label{font-size:9px;color:#555;margin-right:4px}
.main-grid{display:grid;grid-template-columns:230px minmax(580px,1fr) 245px;gap:6px;padding:0 5px 5px}.left-rack,.right-rack{display:flex;flex-direction:column;gap:6px}
.group-box{min-width:0;margin:0;border:2px groove #eee;padding:8px 7px 7px;background:#c0c0c0}legend{padding:0 4px;font-weight:700;font-size:10px;letter-spacing:.3px}
.switchboard{background:#a8a8a8;border:1px solid #808080;padding:3px}.switch-row{display:grid;grid-template-columns:15px 1fr auto;align-items:center;gap:5px;min-height:24px;padding:2px 4px;border-bottom:1px solid #8b8b8b;border-top:1px solid #d8d8d8}.switch-row:last-child{border-bottom:0}.switch-row strong{font-family:"Courier New",monospace;font-size:10px;background:#ddd;border:1px inset #eee;padding:2px 4px;min-width:57px;text-align:center}
.lamp{display:inline-block;width:10px;height:10px;border-radius:50%;background:#555;border:1px solid #222;box-shadow:inset 1px 1px 2px rgba(255,255,255,.25),0 0 0 1px #999}.lamp.green{background:var(--green);box-shadow:inset 1px 1px 2px rgba(255,255,255,.5),0 0 4px rgba(43,212,95,.7)}.lamp.amber{background:var(--amber)}.lamp.red{background:var(--red)}.lamp.off{background:#3c3c3c}
.meter-list{display:grid;gap:4px}.meter-list>div{display:grid;grid-template-columns:1fr auto;align-items:center}.meter-list output{font-family:"Courier New",monospace;background:#1a221d;color:#a7d7ac;border:2px inset #888;padding:3px 5px;min-width:58px;text-align:right}
.check-line{display:block;margin:5px 0;white-space:nowrap}.check-line input{vertical-align:-2px}.etched{border:0;border-top:1px solid #808080;border-bottom:1px solid #fff;margin:7px 0}
.workspace{min-width:0}.tabs{height:25px;display:flex;align-items:flex-end;padding-left:3px}.tab{position:relative;top:1px;background:#c0c0c0;border-top:2px solid #fff;border-left:2px solid #fff;border-right:2px solid #404040;border-bottom:0;padding:4px 10px 5px;margin-right:2px}.tab.active{z-index:2;padding-top:6px;background:#c0c0c0}.tab:focus{outline:1px dotted #000;outline-offset:-4px}
.tab-panel{display:none;min-height:568px;border:2px groove #fff;padding:6px;background:#c0c0c0}.tab-panel.active{display:block}.panel-caption{font-weight:700;font-size:10px;letter-spacing:.6px;margin-bottom:5px;background:#b0b0b0;padding:4px 6px;border:1px solid #888}
.map-screen{position:relative;height:470px;background:#071817;overflow:hidden}.map-screen svg{display:block;width:100%;height:100%}.ocean{fill:#0b1c1a}.grid-line{stroke:#29423f;stroke-width:.7}.land{fill:#68746c;stroke:#9ca79e;stroke-width:1.4}.land.island{fill:#59675f}.map-label{fill:#c3d1c8;font:13px "Courier New",monospace;letter-spacing:2px}.map-label.dim{fill:#54736a;font-size:18px}.arc{fill:none;stroke-width:2}.arc-muted{stroke:#6f7f77;stroke-dasharray:7 5}.arc-bright{stroke:#c39b42;stroke-width:2.2}.track{fill:none;stroke:#7ec5a2;stroke-width:2.5}.fix{fill:#e5e5e5;stroke:#000}.fix-label,.candidate-label,.range-label{fill:#d9e4dc;font:10px "Courier New",monospace}.candidate{fill:#ffb13b;stroke:#fff;stroke-width:1.3}.candidate-label{fill:#ffd28a}.range-line{stroke:#846b42;stroke-dasharray:3 4}.range-label{fill:#a88f68}.crosshair{stroke:#fff;stroke-width:1}
.map-overlay{position:absolute;font:10px/1.35 "Courier New",monospace;color:#aad1bc;background:rgba(0,0,0,.55);padding:4px 5px}.top-left{top:5px;left:5px}.bottom-left{bottom:5px;left:5px}.bottom-right{bottom:5px;right:5px}.map-controls{display:flex;align-items:center;gap:6px;padding-top:6px}.map-controls label{margin-left:5px}
.data-table-wrap{background:#fff;min-height:410px;overflow:auto}.data-table{border-collapse:collapse;width:100%;font-family:"Courier New",monospace;font-size:11px}.data-table th{position:sticky;top:0;background:#c0c0c0;border:1px solid #808080;padding:5px;text-align:left}.data-table td{border:1px solid #aaa;padding:5px}.data-table tr:nth-child(even){background:#ededed}.data-table .terminal-row{background:#fff1c9}.annotation-box{margin-top:7px;border:2px inset #ddd;background:#e8e8e8;padding:8px;line-height:1.45}
.solver-layout{display:grid;grid-template-columns:1fr 1.1fr;gap:7px}.form-grid{display:grid;grid-template-columns:90px 1fr;gap:5px;align-items:center}.button-row{display:flex;gap:5px;margin-top:8px}.digital-readouts{display:grid;grid-template-columns:1fr 1fr;gap:5px}.digital-readouts.large{grid-template-columns:1fr}.digital-readouts>div{background:#8f8f8f;border:1px solid #737373;padding:4px}.digital-readouts span{display:block;font-size:9px;font-weight:700;color:#262626;margin-bottom:2px}.digital-readouts output{display:block;background:#101914;color:#afe3b8;border:2px inset #a0a0a0;font:bold 15px "Courier New",monospace;padding:5px 6px;text-align:right;letter-spacing:.5px}.digital-readouts.large output{font-size:14px}
.terminal{margin-top:7px;background:#050805;color:#9ccc9f;font:12px/1.6 "Courier New",monospace;padding:8px;min-height:190px}.terminal.tall{min-height:475px}.terminal span{color:#678d6a}.cursor{animation:blink 1s steps(1,end) infinite}@keyframes blink{50%{opacity:0}}
.chart{height:500px;background:#f7f7f7}.chart svg{width:100%;height:100%}.chart-bg{fill:#f5f5f5}.chart-grid path{fill:none;stroke:#c7c7c7;stroke-width:1}.zero-line{stroke:#555;stroke-width:1.2}.plot-line{fill:none;stroke:#000080;stroke-width:2}.chart-label{font:11px "Courier New",monospace;fill:#222}
.empty-instrument{height:500px;display:grid;place-items:center;align-content:center;background:#929292;text-align:center}.big-label{font-weight:700;letter-spacing:1px}.sevenseg{margin:12px 0;background:#121912;color:#e6a93b;border:3px inset #aaa;padding:12px 25px;font:bold 25px "Courier New",monospace;letter-spacing:4px}
.provenance-key{display:grid;gap:5px}.tag{display:inline-block;width:36px;padding:2px 3px;text-align:center;font:bold 9px "Courier New",monospace;border:1px solid #333;margin-right:4px}.tag.observed{background:#fff}.tag.derived{background:#d8e8ff}.tag.modeled{background:#fff0bd}.tag.inferred{background:#e2d5eb}
.needle-meter{height:74px;background:#ece9d8;border:2px inset #aaa;position:relative;overflow:hidden}.needle-meter:before{content:"";position:absolute;left:12%;right:12%;bottom:10px;height:38px;border:2px solid #333;border-bottom:0;border-radius:100% 100% 0 0}.scale{position:absolute;left:14%;right:14%;top:10px;display:flex;justify-content:space-between;font:10px "Courier New",monospace}.needle{position:absolute;width:2px;height:43px;background:#b30000;left:53%;bottom:7px;transform:rotate(12deg);transform-origin:bottom}.meter-caption{text-align:center;font:9px "Courier New",monospace;padding:4px 0}.notes{width:100%;min-height:120px;resize:vertical;background:#fffde7;border:2px inset #ddd;padding:5px;font:11px/1.4 "Courier New",monospace}
.lower-console{display:grid;grid-template-columns:1fr auto;gap:6px;padding:0 5px 5px}.event-log-box{padding-bottom:6px}.event-log{min-height:39px;background:#fff;padding:6px;font:11px "Courier New",monospace}.event-log span{font-weight:700}.hardware-buttons{display:flex;gap:5px;align-items:end}.square-button{width:67px;height:55px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;font-weight:700}.square-button.danger{background:#b8b8b8}
.statusbar{display:flex;gap:3px;padding:3px;border-top:1px solid #fff}.status-cell{height:22px;padding:4px 7px;border-top:1px solid #808080;border-left:1px solid #808080;border-right:1px solid #fff;border-bottom:1px solid #fff;white-space:nowrap}.status-cell.flex{flex:1}
@media(max-width:1100px){body{overflow-x:auto}.desktop{padding:4px}.window{min-width:980px}.main-grid{grid-template-columns:210px minmax(540px,1fr) 210px}}
@media(max-width:700px){html,body{font-size:11px}.desktop{padding:0}.window{min-width:760px;margin:0}.prototype-flag{display:none}}