:root{
  --bg:#0e0f14;
  --panel:#15171f;
  --panel-2:#1b1e28;
  --line:#262a36;
  --ink:#e8eaf0;
  --ink-dim:#9aa1b4;
  --ink-faint:#6b7387;
  --gold:#e0a03a;
  --gold-soft:#f0c47a;
  --accent:#6f7bff;
  --radius:12px;
  --sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:var(--sans);
  background:var(--bg);
  color:var(--ink);
  font-size:14px;
  line-height:1.5;
  overflow:hidden;
  -webkit-font-smoothing:antialiased;
}
button{font:inherit;color:inherit;cursor:pointer}
.hidden{display:none !important}
.grow{flex:1}
hr{border:0;border-top:1px solid var(--line);margin:16px 0}

/* ---------- boot overlay ---------- */
.boot{
  position:fixed;inset:0;z-index:100;
  display:grid;place-items:center;
  background:radial-gradient(120% 90% at 50% 0%, #1a1d29 0%, var(--bg) 60%);
  transition:opacity .45s ease, visibility .45s;
}
.boot.gone{opacity:0;visibility:hidden}
.boot-error .boot-card{width:min(460px,90vw)}
.boot-error .boot-mark span{animation:none;background:#c2453f}
.boot-error #bootMsg{color:var(--ink);font-weight:600}
.boot-error #bootSub{line-height:1.75;text-align:left;margin-top:14px}
.boot-error code{
  display:inline-block;margin:3px 0;padding:2px 7px;border-radius:5px;
  background:#22222c;color:var(--gold);font-size:12px;
}
.boot-error a{color:#8ab4ff}
.boot-card{width:min(340px,88vw);text-align:center}
.boot-card h1{margin:18px 0 6px;font-size:22px;letter-spacing:-.02em}
.boot-card p{margin:0 0 18px;color:var(--ink-dim)}
.boot-card small{display:block;margin-top:10px;color:var(--ink-faint);font-size:12px}
.boot-mark{
  width:56px;height:56px;margin:0 auto;
  display:grid;grid-template:1fr 1fr/1fr 1fr;gap:4px;
}
.boot-mark span{border-radius:4px;background:var(--gold);animation:pulse 1.4s ease-in-out infinite}
.boot-mark span:nth-child(2){animation-delay:.15s;background:var(--gold-soft)}
.boot-mark span:nth-child(3){animation-delay:.45s;background:#8a6cc0}
.boot-mark span:nth-child(4){animation-delay:.3s;background:#4f8fd6}
@keyframes pulse{0%,100%{opacity:.25;transform:scale(.85)}50%{opacity:1;transform:scale(1)}}

.bar{height:6px;border-radius:99px;background:var(--panel-2);overflow:hidden}
.bar i{display:block;height:100%;width:0%;border-radius:99px;background:linear-gradient(90deg,var(--gold),var(--gold-soft));transition:width .25s ease}

/* ---------- top bar ---------- */
.topbar{
  height:56px;display:flex;align-items:center;gap:16px;
  padding:0 18px;border-bottom:1px solid var(--line);
  background:var(--panel);
}
.brand{display:flex;align-items:center;gap:12px}
.mark{width:28px;height:28px;display:grid;grid-template:1fr 1fr/1fr 1fr;gap:2px}
.mark span{border-radius:3px}
.mark span:nth-child(1){background:var(--gold)}
.mark span:nth-child(2){background:#4f8fd6}
.mark span:nth-child(3){background:#8a6cc0}
.mark span:nth-child(4){background:#d05a4e}
.brand strong{display:block;font-size:15px;letter-spacing:-.01em}
.brand .sub{display:block;font-size:12px;color:var(--ink-faint)}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:14px}
.badge{
  font-size:12px;padding:4px 10px;border-radius:99px;
  background:var(--panel-2);border:1px solid var(--line);color:var(--ink-dim);
}
.ghost{color:var(--ink-faint);text-decoration:none;font-size:12px}
.ghost:hover{color:var(--ink-dim)}

/* ---------- layout ---------- */
.layout{display:grid;grid-template-columns:340px 1fr;height:calc(100% - 56px)}
.panel{
  border-right:1px solid var(--line);background:var(--panel);
  overflow-y:auto;padding:4px 0 40px;
}
.panel::-webkit-scrollbar{width:10px}
.panel::-webkit-scrollbar-thumb{background:#252936;border-radius:99px;border:3px solid var(--panel)}

.step{padding:18px 18px 20px;border-bottom:1px solid var(--line)}
.step h2{
  display:flex;align-items:center;gap:9px;margin:0 0 14px;
  font-size:13px;font-weight:600;letter-spacing:.02em;color:var(--ink);
}
.step h2 i{
  width:20px;height:20px;border-radius:6px;display:grid;place-items:center;
  background:var(--panel-2);border:1px solid var(--line);
  font-style:normal;font-size:11px;color:var(--gold);font-weight:700;
}

/* ---------- dropzone ---------- */
.drop{
  border:1.5px dashed #333949;border-radius:var(--radius);
  padding:26px 16px;text-align:center;cursor:pointer;
  background:var(--panel-2);transition:.18s;
  display:flex;flex-direction:column;align-items:center;gap:4px;
}
.drop:hover,.drop:focus-within{border-color:var(--gold);background:#20232e;outline:none}
.drop.over{border-color:var(--gold);background:#241f16;transform:scale(1.01)}
.drop svg{width:26px;height:26px;fill:none;stroke:var(--gold);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;margin-bottom:6px}
.drop b{font-size:13px}
.drop span{font-size:12px;color:var(--ink-faint)}
.browse{
  margin:8px 0 2px;padding:7px 16px;font:inherit;font-size:12.5px;font-weight:600;
  color:var(--gold);background:transparent;cursor:pointer;
  border:1px solid var(--gold);border-radius:999px;transition:.16s;
}
.browse:hover{background:var(--gold);color:#15151c}
.browse:focus-visible{outline:2px solid var(--gold);outline-offset:2px}

.source{display:flex;gap:12px;align-items:center}
.source canvas{
  width:64px;height:64px;border-radius:8px;object-fit:cover;
  background:var(--panel-2);border:1px solid var(--line);
}
.source b{display:block;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:200px}
.source span{display:block;font-size:12px;color:var(--ink-faint)}
.link{
  background:none;border:0;padding:0;margin-top:4px;
  color:var(--gold);font-size:12px;text-decoration:underline;text-underline-offset:2px;
}

/* ---------- presets ---------- */
.presets{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:18px}
.preset{
  background:var(--panel-2);border:1px solid var(--line);border-radius:10px;
  padding:10px 6px;text-align:center;transition:.15s;
}
.preset:hover{border-color:#3b4152}
.preset b{display:block;font-size:12.5px}
.preset span{display:block;font-size:10.5px;color:var(--ink-faint);margin-top:2px}
.preset.is-on{border-color:var(--gold);background:#231e15}
.preset.is-on b{color:var(--gold-soft)}

/* ---------- fields ---------- */
.field{display:block;margin-bottom:16px}
.field > span{
  display:flex;justify-content:space-between;align-items:baseline;
  font-size:12.5px;color:var(--ink-dim);margin-bottom:7px;
}
.field em{font-style:normal;color:var(--ink);font-variant-numeric:tabular-nums;font-size:12px}
.field small{display:block;margin-top:6px;font-size:11px;color:var(--ink-faint);line-height:1.45}
.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}

input[type=range]{
  -webkit-appearance:none;appearance:none;width:100%;height:4px;border-radius:99px;
  background:#2b3040;outline:none;
}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;width:15px;height:15px;border-radius:50%;
  background:var(--gold);border:2px solid var(--panel);cursor:grab;
  box-shadow:0 0 0 1px var(--gold);
}
input[type=range]::-moz-range-thumb{
  width:13px;height:13px;border-radius:50%;background:var(--gold);
  border:2px solid var(--panel);cursor:grab;box-shadow:0 0 0 1px var(--gold);
}

.check{display:flex;align-items:center;gap:9px;font-size:12.5px;color:var(--ink-dim);margin-bottom:14px;cursor:pointer}
.check.inline{margin:0;font-size:12px}
.check input{accent-color:var(--gold);width:15px;height:15px;cursor:pointer}

.adv{margin-top:4px;border-top:1px solid var(--line);padding-top:14px}
.adv summary{
  cursor:pointer;font-size:12.5px;color:var(--ink-dim);
  list-style:none;user-select:none;margin-bottom:14px;
}
.adv summary::-webkit-details-marker{display:none}
.adv summary::before{content:"▸ ";color:var(--gold)}
.adv[open] summary::before{content:"▾ "}

/* ---------- buttons ---------- */
.primary{
  width:100%;padding:11px 16px;border:0;border-radius:10px;
  background:linear-gradient(180deg,var(--gold-soft),var(--gold));
  color:#20160a;font-weight:650;font-size:13.5px;letter-spacing:.01em;
  transition:.15s;
}
.primary:hover:not(:disabled){filter:brightness(1.08)}
.primary:disabled{background:var(--panel-2);color:var(--ink-faint);cursor:not-allowed}
.primary.sm{width:auto;padding:7px 14px;font-size:12.5px;border-radius:8px}

.prog{margin-top:14px}
.prog span{display:block;margin-top:7px;font-size:12px;color:var(--ink-dim)}
.stats{margin:12px 0 0;font-size:11.5px;color:var(--ink-faint);line-height:1.6}
.stats b{color:var(--ink-dim);font-weight:600}

/* ---------- buy panel ---------- */
.note{margin:0 0 12px;font-size:11.5px;color:var(--ink-faint);line-height:1.55}
.secondary{
  padding:9px 12px;border-radius:9px;border:1px solid var(--line);
  background:var(--panel-2);color:var(--ink-dim);font-size:12.5px;transition:.15s;
}
.secondary:hover{border-color:#3b4152;color:var(--ink);background:#20232e}
.secondary.wide{width:100%;margin-top:8px}
.btn-row{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:8px}
.step h3.sub{margin:18px 0 6px;font-size:13px;letter-spacing:.02em;color:var(--ink)}
.buy-summary .hint{margin:10px 0 0;font-size:12px;line-height:1.5;color:var(--ink-faint);
  border-left:2px solid var(--accent);padding-left:9px}
.buy-summary .hint b{color:var(--ink)}
.buy-summary{
  background:var(--panel-2);border:1px solid var(--line);border-radius:10px;
  padding:11px 13px;margin-bottom:13px;font-size:12px;
}
.buy-summary dl{display:grid;grid-template-columns:1fr auto;gap:5px 10px;margin:0}
.buy-summary dt{color:var(--ink-faint)}
.buy-summary dd{margin:0;text-align:right;color:var(--ink);font-variant-numeric:tabular-nums}
.buy-summary dd.big{color:var(--gold-soft);font-weight:650}
.batches{display:flex;flex-direction:column;gap:6px;margin-top:10px}
.batches .batch{
  display:block;padding:8px 11px;border-radius:8px;text-decoration:none;
  background:var(--panel-2);border:1px solid var(--line);
  color:var(--ink-dim);font-size:12px;transition:.15s;
}
.batches .batch:hover{border-color:var(--gold);color:var(--gold-soft)}
.note code{
  background:var(--panel-2);border:1px solid var(--line);border-radius:4px;
  padding:0 4px;font-size:10.5px;color:var(--gold-soft);
}

/* ---------- stage ---------- */
.stage{display:flex;flex-direction:column;min-width:0;background:#0b0c11}
.stage-tools{
  height:48px;display:flex;align-items:center;gap:14px;
  padding:0 16px;border-bottom:1px solid var(--line);background:var(--panel);
}
.zoom{display:flex;align-items:center;gap:2px;background:var(--panel-2);border:1px solid var(--line);border-radius:8px;padding:2px}
.zoom button{
  width:26px;height:24px;border:0;background:none;border-radius:6px;
  color:var(--ink-dim);font-size:14px;line-height:1;
}
.zoom button:hover{background:#2a2f3d;color:var(--ink)}
.zoom button#zoomFit{width:auto;padding:0 9px;font-size:11.5px}
.zoom span{
  min-width:52px;text-align:center;font-size:11.5px;color:var(--ink-dim);
  font-variant-numeric:tabular-nums;
}

.viewport{position:relative;flex:1;overflow:hidden;background:
  linear-gradient(45deg,#101219 25%,transparent 25%,transparent 75%,#101219 75%),
  linear-gradient(45deg,#101219 25%,#0b0c11 25%,#0b0c11 75%,#101219 75%);
  background-size:24px 24px;background-position:0 0,12px 12px;
}
.viewport canvas{position:absolute;inset:0;width:100%;height:100%;cursor:grab}
.viewport canvas.dragging{cursor:grabbing}

.empty{
  position:absolute;inset:0;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:6px;text-align:center;padding:24px;
  pointer-events:none;
}
.empty b{font-size:15px}
.empty p{margin:0;max-width:330px;font-size:12.5px;color:var(--ink-faint);line-height:1.6}
.empty-art{display:grid;grid-template:repeat(3,20px)/repeat(3,20px);gap:4px;margin-bottom:16px;opacity:.55}
.empty-art span{border-radius:4px;background:#232838}
.empty-art span:nth-child(1){background:#3a2f1c}
.empty-art span:nth-child(3){background:#1c2a3a}
.empty-art span:nth-child(5){background:#2e1c3a}
.empty-art span:nth-child(7){background:#3a1c1c}
.empty-art span:nth-child(9){background:#1c3a26}

.tip{
  position:absolute;pointer-events:none;z-index:5;
  background:rgba(14,15,20,.96);border:1px solid var(--line);
  border-radius:9px;padding:8px 11px;font-size:12px;
  box-shadow:0 8px 28px rgba(0,0,0,.55);max-width:230px;
  backdrop-filter:blur(6px);
}
.tip b{display:block;color:var(--gold-soft);font-size:12.5px;margin-bottom:2px}
.tip span{display:block;color:var(--ink-faint);font-size:11px}

@media (max-width:900px){
  body{overflow:auto}
  .layout{grid-template-columns:1fr;height:auto}
  .panel{border-right:0;border-bottom:1px solid var(--line);overflow:visible}
  .stage{height:70vh}
}