:root{color-scheme:light;--paper:#f5f2e9;--ink:#293630;--muted:#70766b;--rule:#d8d7ca;--teal:#28675f;--teal-wash:#dce8df;--orange:#c54c20;--orange-wash:#fae8dc;--font:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:14px/1.45 var(--font);font-variant-numeric:tabular-nums}button,input,select,textarea{font:inherit}button,select,input[type=range]{cursor:pointer}button,a,select,input,canvas,textarea{outline-offset:4px}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible,canvas:focus-visible,textarea:focus-visible{outline:3px solid var(--teal)}button{border:1px solid #bfc3b6;background:#faf8f1;color:var(--ink);min-height:36px;padding:7px 12px;border-radius:4px;font-size:12px;font-weight:600;transition:background .12s}button:hover{background:#e8e9dd}button:active{transform:translateY(1px)}button:disabled{cursor:default;opacity:.4}button.primary{background:var(--ink);color:var(--paper);border-color:var(--ink);display:flex;justify-content:space-between;align-items:center;width:100%;font-size:13px}button.primary:hover{background:var(--teal)}button.primary span{font-size:20px;line-height:1}.app{max-width:1600px;margin:auto;padding:18px 28px 12px;min-height:100svh;display:flex;flex-direction:column;gap:16px}.masthead{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:38px}.brand{display:flex;align-items:center;gap:12px;white-space:nowrap}h1{font-size:26px;letter-spacing:-1.2px;margin:0;font-weight:750}.brand-mark{height:25px;width:25px;border:2px solid var(--ink);display:block;position:relative;background:linear-gradient(90deg,transparent 10px,var(--ink) 10px,var(--ink) 12px,transparent 12px)}.brand-mark:after{content:"";position:absolute;width:11px;height:11px;bottom:-2px;right:-2px;background:var(--paper);border-left:2px solid var(--ink);border-top:2px solid var(--ink)}.edition{font-size:9px;letter-spacing:1.5px;border-left:1px solid var(--rule);padding-left:13px;color:var(--muted)}.masthead p{font-size:12px;color:#566055;margin:0;text-align:right}.summary-bar{border-top:1px solid var(--ink);border-bottom:1px solid var(--rule);padding:12px 0;display:flex;align-items:center;justify-content:space-between;gap:16px}.eyebrow{font-size:9px;letter-spacing:1.5px;font-weight:650;color:var(--muted)}.divider{margin:0 9px;color:#a4aa9c}#summary{margin:3px 0 0;font-size:24px;line-height:1.25;letter-spacing:-.6px;font-weight:600}.summary-status{border:1px solid #d9ab94;padding:7px 12px;background:var(--orange-wash);font-size:12px;color:#973d20;white-space:nowrap}.summary-status.clear{background:var(--teal-wash);border-color:#9cbcaf;color:var(--teal)}main{display:grid;grid-template-columns:minmax(0,1fr) 267px;gap:24px;flex:1;min-height:470px}.drawing{border:1px solid var(--rule);display:flex;flex-direction:column;min-width:0;background-color:#f8f5ed;background-image:linear-gradient(#6c775b06 1px,transparent 1px),linear-gradient(90deg,#6c775b06 1px,transparent 1px);background-size:24px 24px}.drawing-header,.drawing-footer{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 15px;font-size:10px;color:var(--muted)}.drawing-header{border-bottom:1px solid var(--rule);letter-spacing:.5px}.drawing-header b{color:var(--ink);font-size:11px;margin-left:9px;font-weight:600}.canvas-wrap{flex:1;min-height:380px;position:relative}canvas{display:block;width:100%;height:100%;position:absolute;touch-action:none}.drawing-footer{border-top:1px solid var(--rule);padding-top:10px;padding-bottom:10px}.legend{display:flex;gap:14px;flex-wrap:wrap}.legend>span{display:flex;align-items:center;gap:5px}.swatch{width:11px;height:11px;display:inline-flex;align-items:center;justify-content:center;border-radius:1px;font-size:9px;font-style:normal;font-weight:800}.swatch.floor{background:var(--teal-wash);border:1px solid #b1c6b8}.swatch.seat{background:var(--teal)}.swatch.blocked{background:var(--orange);color:white}.drawing-instruction{white-space:nowrap}aside{display:flex;flex-direction:column;gap:12px}.control-section{border-bottom:1px solid var(--rule);padding-bottom:12px}.label-row{display:flex;align-items:center;justify-content:space-between;gap:8px}label{font-size:12px;font-weight:650}output{font-size:27px;font-weight:600;line-height:1.15;letter-spacing:-1px}output small{font-size:12px;font-weight:450;letter-spacing:0;color:var(--muted)}input[type=range]{width:100%;height:20px;accent-color:var(--teal);margin:10px 0 0}.range-labels{display:flex;justify-content:space-between;font-size:10px;color:var(--muted)}.micro{font-size:10px;line-height:1.5;color:var(--muted);margin:7px 0 0}.tag{font-size:8px;letter-spacing:1px;color:var(--muted)}select{width:100%;height:34px;border:1px solid #bfc3b6;border-radius:3px;background:#faf8f1;color:var(--ink);padding:5px 8px;font-size:12px;margin:8px 0}.button-row{display:flex;gap:7px}.button-row button{flex:1;white-space:nowrap;padding-left:7px;padding-right:7px}.text-button{background:transparent;border:0;min-height:28px;padding:5px 0 0;font-size:12px}.text-button:hover{background:transparent;color:var(--teal)}.text-button span{font-size:16px;margin-right:3px}.route-section select{margin-bottom:0}.insight{display:flex;gap:9px;padding:10px 11px;background:var(--orange-wash);border-left:2px solid var(--orange);color:#913b20}.insight-icon{font-size:13px;border:1px solid currentColor;width:17px;height:17px;flex:none;text-align:center;line-height:16px;font-weight:750}.insight p{margin:0;font-size:11px;line-height:1.5}.insight.clear{color:var(--teal);border-color:var(--teal);background:var(--teal-wash)}.export-section{display:flex;flex-direction:column;gap:7px;margin-top:auto}.feedback{min-height:15px;margin:0}footer{display:flex;justify-content:space-between;gap:16px;color:var(--muted);font-size:10px}footer p{margin:0}a{color:inherit;text-underline-offset:3px}dialog{width:min(540px,90vw);padding:24px;background:var(--paper);color:var(--ink);border:1px solid var(--ink);border-radius:6px}dialog::backdrop{background:#29363066}dialog h2{margin-top:0;font-size:20px}dialog p{font-size:13px}textarea{width:100%;font-family:ui-monospace,monospace;font-size:12px;padding:10px;margin-bottom:12px;border:1px solid var(--rule)}
@media(min-width:1000px) and (min-height:650px){.app{height:100svh;gap:12px}.canvas-wrap{min-height:0}main{min-height:0}aside{gap:8px}.control-section{padding-bottom:8px}.micro{font-size:10px;margin-top:5px}button{min-height:32px;padding-top:5px;padding-bottom:5px}select{height:30px;margin-top:6px;margin-bottom:6px}input[type=range]{margin-top:6px;height:18px}.text-button{min-height:25px}.insight{padding:8px 10px}.export-section{gap:6px}.feedback{margin:0}.drawing-instruction{display:none}}
@media(min-height:850px){.app{padding-top:26px;padding-bottom:20px;gap:20px}aside{gap:18px}.control-section{padding-bottom:18px}.micro{font-size:11px}.canvas-wrap{min-height:450px}}
@media(max-width:1050px){.edition{display:none}.masthead p{max-width:460px}.drawing-instruction{display:none}.app{padding-left:18px;padding-right:18px}main{gap:16px}}
@media(max-width:760px){.app{padding:16px;gap:16px}.masthead{display:block}.masthead p{text-align:left;font-size:12px;margin-top:8px;max-width:none}.summary-bar{align-items:flex-start}#summary{font-size:20px}.summary-status{padding:5px 7px;font-size:10px}.eyebrow{font-size:8px}main{grid-template-columns:1fr}.canvas-wrap{min-height:0;aspect-ratio:1.35}.drawing-header{font-size:9px;padding:10px}.drawing-footer{padding:10px}.legend{gap:10px;font-size:9px}aside{display:grid;grid-template-columns:1fr 1fr;gap:16px}.table-section{grid-row:span 2}.insight,.export-section,.feedback{grid-column:1/-1}.insight{align-self:start}footer{flex-direction:column;gap:8px}output{font-size:24px}.tag{display:none}.button-row{flex-wrap:wrap}}
@media(prefers-reduced-motion:reduce){button{transition:none}}