/* Screenshot exercise editor, following the existing blue/white management UI. */
.sim-toolbar,.sim-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.sim-toolbar{margin:16px 0}.sim-toolbar h2{margin:0 auto 0 0}.sim-toolbar input{width:auto;min-width:0;max-width:100%}.sim-base{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 24px}.sim-full{grid-column:1/-1}.sim-base .field,.sim-step-editor .field{margin-bottom:20px}.sim-base small{display:block;color:#526071;margin-top:8px;line-height:1.6}.sim-editor{display:grid;grid-template-columns:220px minmax(0,1fr);gap:20px;align-items:start}.sim-step-list{position:sticky;top:90px;max-height:75vh;overflow:auto}.sim-step-tab{width:100%;display:flex;gap:10px;align-items:flex-start;margin:5px 0;border:1px solid #e3e9f0;background:white;padding:12px;text-align:left;border-radius:6px;color:#1b2b41;line-height:1.5}.sim-step-tab.selected{border-color:#2478f2;background:#edf5ff}.sim-step-tab span{min-width:0;word-break:break-word}.sim-step-list>.button{width:100%;margin-top:18px}.sim-canvas{position:relative;width:100%;line-height:0;overflow:hidden;background:#f4f6f8;border:1px solid #d9e2ef;margin:18px 0}.sim-canvas[data-selectable]{cursor:crosshair;touch-action:none;user-select:none}.sim-canvas img{width:100%;height:auto;display:block}.sim-image-empty{padding:70px 20px;text-align:center;line-height:1.6;color:#485b73}.sim-region{position:absolute;box-sizing:border-box;border:2px solid #2478f2;background:rgba(36,120,242,.17);pointer-events:none}.sim-region span{position:absolute;top:0;left:0;background:#2478f2;color:white;padding:2px 6px;line-height:1.3;font-size:12px}.sim-region-draft{border-style:dashed}.sim-region-form{display:flex;align-items:end;gap:10px;flex-wrap:wrap;padding:12px 0;border-bottom:1px solid #edf0f5}.sim-region-form label{display:flex;flex-direction:column;font-size:12px;gap:6px}.sim-region-form input{width:84px;min-width:0}.sim-check{display:flex;align-items:center;gap:10px;margin:12px 0 20px}.sim-check input{width:auto}.sim-save{margin-top:22px}.sim-error{color:#912f36}.sim-feedback{color:#20364d}.sim-preview-dialog{width:min(1000px,95vw);max-height:92vh;overflow:auto;border:1px solid #dbe3ec;border-radius:10px;padding:24px}.sim-preview-dialog::backdrop{background:rgba(15,27,44,.45)}.sim-preview-canvas img{display:block;width:100%;height:auto;cursor:pointer}.sim-preview-dialog textarea{display:block;width:100%;margin:20px 0}.demo-image-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:18px}.demo-image-item{border:1px solid #e2e8f0;border-radius:8px;overflow:hidden;padding:14px;min-width:0}.demo-image-item img{width:100%;height:145px;object-fit:cover;border-radius:4px}.demo-image-item h3{font-size:15px;line-height:1.5;margin:14px 0 6px;word-break:break-word}.demo-image-item p{font-size:12px;line-height:1.7}.demo-image-item .sim-actions{justify-content:space-between}.demo-image-item .sim-actions a{font-size:13px}#demo-image-feedback{line-height:1.8;color:#20364d;white-space:pre-wrap}#demo-image-tools details>summary{padding:12px 0;cursor:pointer}
@media(max-width:1100px){.sim-editor{grid-template-columns:180px minmax(0,1fr)}.demo-image-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.sim-region-form{gap:8px}.sim-region-form input{width:68px}}
@media(max-width:700px){.sim-base,.sim-editor{display:block}.sim-step-list{position:static;max-height:none}.sim-step-tab{display:inline-flex;width:auto;max-width:100%}.sim-step-list>.button{width:auto}.sim-step-editor{padding:18px}.demo-image-grid{grid-template-columns:1fr}.sim-toolbar .button{white-space:normal}.sim-preview-dialog{padding:15px}.sim-toolbar input{width:100%}.sim-save .cell-muted{width:100%}}

.sim-base,.sim-step-list,.sim-step-editor,.sim-save{padding:24px}.sim-base{padding-bottom:4px}.sim-step-list h2{margin:0 0 18px;font-size:18px}.sim-step-editor{min-width:0}.sim-base>.field{min-width:0}.sim-editor .sim-toolbar{margin-top:0}#sim-regions{margin-top:18px}.sim-step-editor .field>label{display:block;margin-bottom:8px}.sim-step-editor .field>small{display:block;line-height:1.7;margin-top:8px}#demo-image-tools{padding:24px}
@media(max-width:700px){.sim-base,.sim-step-list,.sim-step-editor,.sim-save,#demo-image-tools{padding:18px}.sim-base{padding-bottom:0}.sim-region-form label{flex:1;min-width:65px}.sim-region-form input{width:100%}.sim-toolbar>.button{max-width:100%}}

/* V1.3.8: keep empty image slots actionable after cleanup. */
.demo-image-placeholder{height:145px;display:flex;align-items:center;justify-content:center;background:#f4f6f9;color:#526071;border:1px dashed #cad3df;border-radius:4px}.demo-image-empty{padding:14px 0}.demo-image-create{margin-top:12px}.demo-image-item [hidden]{display:none!important}.demo-image-item .sim-actions{justify-content:flex-start;gap:10px}.demo-image-item .sim-actions a{margin-left:auto}

/* V1.3.13: consistent row actions; no unstyled native delete button. */
.sim-list-actions{gap:8px;min-width:232px;flex-wrap:nowrap}.sim-list-actions>.button{min-height:32px;min-width:60px;padding:5px 10px;margin:0;white-space:nowrap;line-height:1.5;box-sizing:border-box}.sim-list-actions>.button:focus-visible{outline:2px solid #2478f2;outline-offset:2px}.sim-list-actions>.button[disabled]{opacity:.5;cursor:wait}