#sourceDialog{width:min(1120px,calc(100vw - 24px));max-height:calc(100dvh - 24px);padding:18px;background:var(--paper);color:var(--text);border:2px solid var(--text);overflow:auto}
#sourceDialog::backdrop{background:rgba(0,0,0,.65)}
.source-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;border-bottom:2px solid var(--text);padding-bottom:12px}
.source-heading h2{margin:0;font-size:22px}.source-actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin:12px 0}
.source-fields{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:12px 0}.source-fields label{display:flex;flex-direction:column;gap:5px;min-width:0;font-size:12px}
.source-fields input,.source-fields select{height:40px;padding:6px 9px;border:2px solid var(--text);background:var(--paper);color:var(--text);width:100%;box-sizing:border-box}
.source-fields input[type=checkbox]{width:18px;height:18px}.source-fields .source-check{flex-direction:row;align-items:center;align-self:end;min-height:40px}
#sourceViewport{border:2px solid var(--text);background:#fff;position:relative}#sourceCanvas{width:100%;height:min(44vh,440px);min-height:260px;display:block;touch-action:none;user-select:none}
#sourceCanvas[data-mode=pan]{cursor:grab}#sourceCanvas[data-mode=wall],#sourceCanvas[data-mode=room],#sourceCanvas[data-mode=scale]{cursor:crosshair}
#sourceStatus{min-height:22px;white-space:pre-wrap;overflow-wrap:anywhere;font-size:13px;line-height:1.5}#sourceStatus[data-error=true]{color:var(--signal)}
.source-note{font-size:12px;line-height:1.6;margin:8px 0;overflow-wrap:anywhere}.source-layers{display:flex;flex-wrap:wrap;gap:6px 14px;max-height:140px;overflow:auto;border:1px solid var(--text);padding:8px}.source-layers label{display:flex;align-items:center;gap:5px;overflow-wrap:anywhere;font-size:12px}
#sourceMissingNotice{position:absolute;bottom:80px;left:12px;right:12px;z-index:6;background:var(--paper);color:var(--text);border:2px solid var(--signal);padding:10px;font-size:12px;line-height:1.5}body.m3d #sourceMissingNotice{display:none}
#sourceDialog .source-modes .btn.on{background:var(--accent);color:#0a0a0a}.source-footer{position:sticky;bottom:-18px;background:var(--paper);border-top:2px solid var(--text);padding:12px 0;margin-top:12px;display:flex;flex-wrap:wrap;gap:8px;align-items:center;justify-content:space-between}
#sourceDialog input:not([type=file]):not([type=checkbox]):not([type=range]),#sourceDialog select{height:40px;padding:6px 9px;border:2px solid var(--text);background:var(--paper);color:var(--text);box-sizing:border-box}
#sourceSummary{font-size:12px;line-height:1.5;flex:1;min-width:180px}.source-file{max-width:100%;min-width:0}.source-subsection{margin:14px 0;padding-top:10px;border-top:1px solid var(--text)}
@media(max-width:640px){#sourceDialog{padding:12px;width:calc(100vw - 12px);max-height:calc(100dvh - 12px)}.source-fields{grid-template-columns:repeat(2,minmax(0,1fr))}.source-heading h2{font-size:18px}.source-actions .btn{min-height:40px}.source-footer{bottom:-12px}.source-footer .btn{width:100%}#sourceCanvas{height:320px}.source-heading{align-items:flex-start}}