:root{font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#182a38;background:#edf2f6;font-size:16px;--line:#d9e2e8;--muted:#586d7c;--teal:#087b86;--navy:#123142;--amber:#c48a30}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,.file-button{cursor:pointer;border:1px solid #c8d4de;border-radius:7px;background:#fff;color:var(--navy);padding:9px 12px;font-size:.875rem;line-height:1.2;font-weight:600}button:hover:not(:disabled),.file-button:hover{background:#edf5f8;border-color:#91abbc}button:disabled{opacity:.45;cursor:not-allowed}button.primary{background:var(--teal);border-color:var(--teal);color:white;padding:12px 16px}button.primary:hover:not(:disabled){background:#056370}.quiet{background:transparent;border-color:transparent}input,select{width:100%;min-width:0;border:1px solid #c7d3dc;border-radius:6px;background:#fff;padding:8px 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2px;list-style:none;display:flex;justify-content:space-between}summary::after{content:'+';color:#76909f}details[open]>summary{padding-bottom:16px}details[open]>summary::after{content:'−'}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px 10px}.form-grid .wide{grid-column:1/-1}.check{flex-direction:row;align-items:center;gap:8px;min-height:32px}.hint{font-size:.8125rem;color:var(--muted);line-height:1.55}.controls>.hint{padding:0 18px 20px}.config-actions{padding:18px;display:grid;gap:9px;border-top:1px solid var(--line)}.file-button{display:block;text-align:center}.file-button input{position:absolute;width:1px;height:1px;opacity:0}.file-button:focus-within{outline:3px solid #78c8d5}.workspace{display:flex;flex-direction:column;gap:16px;min-width:0}.view-toolbar{display:flex;align-items:center;justify-content:space-between;padding:13px 16px;gap:12px;border-bottom:1px solid 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canvas{display:block;width:100%;height:100%}.viewer-labels{position:absolute;inset:18px 0 auto;display:flex;pointer-events:none;text-align:center;font-size:.875rem;font-weight:650;color:#557083}.viewer-labels span{width:50%}.viewer-caption{position:absolute;bottom:17px;left:18px;font-size:.75rem;color:#506777;pointer-events:none}#previewBadge{position:absolute;right:16px;bottom:14px;max-width:50%;border:1px solid #c5d4dc;background:#ffffffdc;border-radius:6px;padding:6px 9px;font-size:.75rem;color:#41606f;pointer-events:none}.view-footer{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;gap:12px;border-top:1px solid var(--line);color:var(--muted);font-size:.8125rem}.metrics{display:grid;grid-template-columns:.8fr .9fr 1.9fr}.metrics>div{padding:17px 20px;border-right:1px solid var(--line);display:flex;flex-direction:column;gap:5px}.metrics>div:last-child{border:0}.metrics strong{font-size:1.15rem;font-variant-numeric:tabular-nums;font-weight:600}.metrics 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.editor-label{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:12px}.editor-label button{padding:6px 8px;font-size:.75rem}.reference-note{padding:20px 18px;border-top:1px solid var(--line);background:#f7fafc}.reference-note p{font-size:.8125rem;line-height:1.55;color:var(--muted);margin:10px 0}.reference-note a{display:block;margin-top:9px;font-size:.8125rem;color:var(--teal)}.connection-tools{padding:16px;display:flex;align-items:center;gap:12px;justify-content:space-between}.connection-tools p{font-size:.875rem;color:var(--muted);max-width:300px}.connection-tools>div{display:flex;gap:6px}.grid-container{height:442px;overflow:auto;background:#f5f9fc;padding:15px}#gridSvg{display:block;width:100%;height:100%;min-height:350px}.grid-well{fill:white;stroke:#416d80;stroke-width:1.3;cursor:pointer}.grid-well.selected{fill:#16909c;stroke:#075c68}.grid-well.disabled{fill:#e6ecf0;stroke-dasharray:3 3}.grid-well.override{stroke:#c18b34;stroke-width:2.5}.grid-edge{stroke:#c6d4dc;stroke-width:2;stroke-dasharray:4 4}.grid-edge.connected{stroke:#148e9b;stroke-width:4;stroke-dasharray:none}.grid-hit{stroke:transparent;stroke-width:17;cursor:pointer}.grid-label{pointer-events:none;font-size:10px;fill:#345566;text-anchor:middle;dominant-baseline:central}.grid-label.selected{fill:white}.legend{display:flex;gap:20px;padding:13px 16px;font-size:.8rem;color:var(--muted);flex-wrap:wrap}footer{display:flex;gap:20px;padding:5px 25px 20px;max-width:1920px;margin:auto;font-size:.75rem;color:#607586}footer span{margin-right:auto}footer a{color:inherit}#viewerFallback{position:absolute;inset:100px 35px auto;padding:20px;background:#fff;border:1px solid var(--line);z-index:4;line-height:1.5}[hidden]{display:none!important}
@media(min-width:1650px){#viewer{height:565px}.grid-container{height:537px}}
@media(max-width:1250px){.app-shell{grid-template-columns:260px minmax(0,1fr);padding:16px;gap:14px}.inspector{grid-column:1/-1;display:grid;grid-template-columns:250px 1fr 1fr}.inspector .panel-heading{grid-column:1/-1;padding-bottom:12px}.inspector>.full{grid-column:1}.inspector #wellEditor{grid-column:1}.connection-detail{grid-column:2;grid-row:2/4;border-top:0;border-left:1px solid var(--line)}.reference-note{grid-column:3;grid-row:2/4;border-top:0}.view-toolbar{flex-wrap:wrap}.header-actions{gap:5px}#engineStatus{display:none}.view-footer{flex-wrap:wrap}.model-subbar{gap:10px}}
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@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
/* Optional accounts and a short first-visit tour. */
.header-actions{flex-wrap:wrap;justify-content:flex-end}.brand{flex-shrink:0}.brand-icon{object-fit:contain}.has-account{border-color:var(--teal);color:var(--teal)}
dialog{color:var(--navy);font:inherit;border:1px solid var(--line);border-radius:16px;box-shadow:0 22px 90px #12314238;padding:0}dialog::backdrop{background:#12314266}.design-dialog{width:min(590px,calc(100% - 24px));max-height:calc(100dvh - 32px);overflow:auto}.dialog-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;padding:22px 24px;border-bottom:1px solid var(--line);background:#f7fbfc}.dialog-heading h2{font-size:1.3rem}.dialog-heading .hint{margin-top:6px}.dialog-body{padding:22px 24px}.account-intro{font-size:1rem;line-height:1.6;margin-bottom:20px;color:#445b6a}.account-tabs{margin-bottom:20px}.account-tabs button{flex:1;padding:11px}#authForm{display:grid;gap:15px}#authForm label,.save-design-form label{font-size:.9375rem;font-weight:600}#authForm input,.save-design-form input{font-size:1rem;padding:11px}#authSubmit{margin-top:3px;min-height:44px}.password-field{position:relative;display:flex}.password-field input{padding-right:66px!important}.password-field button{position:absolute;right:3px;top:3px;bottom:3px;border:0;background:transparent;font-weight:500}#passwordHint{margin-top:-8px}.guest-action{display:block;margin:15px auto 0}.account-identity{display:flex;gap:12px;justify-content:space-between;align-items:center;padding-bottom:18px;font-size:.875rem}.account-identity span{overflow-wrap:anywhere}.save-design-form{background:#eff7f7;border:1px solid #c7e4e1;padding:18px;border-radius:10px;display:grid;gap:12px}.save-actions{display:flex;gap:8px;flex-wrap:wrap}.library-heading{display:flex;align-items:center;justify-content:space-between;margin:25px 0 12px}.library-heading h3{font-size:1rem}.design-list{display:grid;gap:10px}.design-card{display:flex;justify-content:space-between;gap:14px;align-items:center;border:1px solid var(--line);padding:14px;border-radius:9px}.design-card h4{font-size:1rem;margin:0 0 6px;overflow-wrap:anywhere}.design-card>div:first-child{min-width:0}.design-card-actions{display:flex;flex-direction:column;gap:5px;flex-shrink:0}.library-empty{padding:26px 18px;text-align:center;background:#f5f8fa;border:1px dashed #c5d4de;border-radius:9px}.library-empty p{margin-top:8px;font-size:.875rem;color:var(--muted);line-height:1.5}.library-note{margin-top:18px}.account-message{margin:0 24px 22px;padding:12px;background:#edf7f5;color:#21635b;border-radius:8px;font-size:.875rem;line-height:1.5;overflow-wrap:anywhere}.account-message.error{background:#fff0ec;color:#a13325}.design-confirmation{position:sticky;bottom:0;padding:20px 24px;background:#fff5e5;border-top:1px solid #e5cd9f;box-shadow:0 -8px 25px #12314214;font-size:.9375rem;line-height:1.6}.design-confirmation>div{display:flex;justify-content:flex-end;gap:8px;margin-top:15px}.tour-dialog{position:fixed;inset:auto 24px 24px auto;margin:0;width:380px;max-width:calc(100% - 24px);padding:22px;overflow:auto;max-height:70dvh}.tour-dialog::backdrop{background:#12314230}.tour-top,.tour-bottom{display:flex;align-items:center;justify-content:space-between;gap:12px}.tour-top{margin-bottom:18px}.tour-top span{font-size:.8125rem;color:var(--muted)}.tour-top button{padding:6px 8px;font-weight:500}.tour-dialog h2{font-size:1.25rem;margin-bottom:12px}.tour-dialog p{font-size:1rem;line-height:1.65;color:#445b6a}.tour-bottom{margin-top:22px}.tour-bottom>div:last-child{display:flex;gap:8px}#tourDots{display:flex;gap:5px}#tourDots span{width:6px;height:6px;border-radius:50%;background:#cedbe2}#tourDots .active{background:var(--teal)}.tour-highlight{outline:4px solid #11a1af!important;outline-offset:3px;scroll-margin-top:16px}
@media(max-width:800px){.header-actions{justify-content:flex-start;gap:8px}.header-actions #generateBtn{margin-left:auto}.header-actions #resetBtn{font-size:.8125rem}.dialog-body,.dialog-heading{padding:20px}.tour-dialog{right:12px;bottom:12px;padding:20px}.tour-highlight{scroll-margin-top:12px}.tour-bottom>div:last-child{gap:6px}.tour-bottom button{padding:10px 12px}.design-card{padding:12px}.account-message{margin:0 20px 20px}}