:root{
  --bg:#f4f4f2; --panel:#fff; --ink:#15161a; --muted:#6b6f76; --line:#e2e2df;
  --accent:#ff5a1f; --accent-ink:#fff; --shadow:0 1px 2px rgba(0,0,0,.05),0 8px 24px rgba(0,0,0,.06);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.45 var(--font);-webkit-font-smoothing:antialiased}
button,input,select{font:inherit;color:inherit}

.bar{display:flex;align-items:center;gap:12px;padding:10px 16px;background:#15161a;color:#fff;position:sticky;top:0;z-index:20}
.brand{font-weight:700;letter-spacing:.2px;display:flex;align-items:center;gap:8px}
.brand .dot{width:12px;height:12px;border-radius:50%;background:var(--accent);display:inline-block}
.bar .field{margin:0}
.bar .field span{color:#b9bcc2;font-size:12px}
.bar .field select,.bar select{background:#24262c;border:1px solid #33363d;color:#fff;border-radius:8px;padding:6px 8px;max-width:340px;width:auto}
.spacer{flex:1}

button{cursor:pointer;border-radius:9px;border:1px solid var(--line);background:#fff;padding:8px 14px;transition:.12s}
button:hover{border-color:#c9c9c4}
button.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);font-weight:600}
button.primary:hover{filter:brightness(1.05)}
.bar button.ghost{background:#24262c;border-color:#33363d;color:#fff}
.bar button.ghost:hover{background:#2e3037}
button.sm{padding:6px 10px;font-size:13px}
button.wide{width:100%}
button:disabled{opacity:.45;cursor:not-allowed}

.layout{display:grid;grid-template-columns:270px minmax(0,1fr) 300px;gap:16px;padding:16px;align-items:start}
.side{display:flex;flex-direction:column;gap:14px;position:sticky;top:64px}
.block{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:14px;box-shadow:var(--shadow)}
.block h2{margin:0 0 10px;font-size:13px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.row{display:flex;gap:8px;margin-top:8px}
.row.end{justify-content:flex-end}
.row>*{flex:1}
.hint{margin:10px 0 0;font-size:12px;color:var(--muted)}
.hint.center{text-align:center}
.muted{color:var(--muted);font-size:13px}
.err{color:#c0392b;font-size:13px;min-height:18px;margin:6px 0 0}

.field{display:block;margin:0 0 10px}
.field span{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin-bottom:4px}
.field i{font-style:normal;color:var(--ink)}
.field.inline{display:flex;align-items:center;gap:8px;margin:0}
.field input[type=number],.field select{width:100%;padding:7px 9px;border:1px solid var(--line);border-radius:9px;background:#fff}
input[type=range]{width:100%;accent-color:var(--accent)}

.drop{border:2px dashed #cfcfca;border-radius:12px;padding:18px 12px;text-align:center;display:flex;flex-direction:column;gap:4px;cursor:pointer;background:#fafaf8}
.drop strong{font-size:13px}
.drop span{font-size:12px;color:var(--muted)}
.drop.over{border-color:var(--accent);background:#fff5f0}
.tray{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:10px}
.tray:empty{display:none}
.thumb{position:relative;aspect-ratio:1;border-radius:10px;overflow:hidden;border:2px solid transparent;background:#eee;cursor:grab}
.thumb img{width:100%;height:100%;object-fit:cover;display:block;pointer-events:none}
.thumb.active{border-color:var(--accent)}
.thumb .x{position:absolute;top:2px;right:2px;width:18px;height:18px;border-radius:50%;border:0;background:rgba(0,0,0,.55);color:#fff;font-size:11px;line-height:18px;padding:0;display:none}
.thumb:hover .x{display:block}

.stage{display:flex;flex-direction:column;gap:10px;min-width:0}
.stagehead{display:flex;justify-content:space-between;align-items:center}
.zoomctl{display:flex;align-items:center;gap:6px}
.zoomctl button{flex:0}
.sheetwrap{background:#dcdcd7;border-radius:14px;padding:18px;display:flex;justify-content:center;overflow:auto}
.sheet{position:relative;background:#fff;box-shadow:0 2px 6px rgba(0,0,0,.18);flex:0 0 auto}
.cell{position:absolute;overflow:hidden;background:#fff;border:1px dashed #c8c8c4;cursor:grab;user-select:none}
.cell.circle{border-radius:50%}
.cell.sel{border:1px solid var(--accent);box-shadow:0 0 0 2px rgba(255,90,31,.25)}
.cell.drag{cursor:grabbing}
.cell.over{background:#fff2ec}
.cell img{position:absolute;left:50%;top:50%;transform-origin:center;pointer-events:none;-webkit-user-drag:none}
.cell .num{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);color:#c9c9c4;font-size:13px;pointer-events:none}
.cell.has .num{display:none}

.modal{position:fixed;inset:0;background:rgba(20,21,25,.55);display:flex;align-items:center;justify-content:center;z-index:50;padding:20px}
.modal.hidden{display:none}
.modalbox{background:#fff;border-radius:16px;padding:20px;max-width:640px;width:100%;max-height:90vh;overflow:auto;box-shadow:var(--shadow)}
.modalbox h2{margin:0 0 6px;font-size:18px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 12px;margin-top:12px}
.steps{margin:0;padding-left:18px;font-size:13px;color:var(--muted)}
.steps li{margin-bottom:6px}
.steps b{color:var(--ink)}

@media(max-width:1100px){
  .layout{grid-template-columns:1fr}
  .side{position:static}
}