/* Minimal admin-ish look (no external deps) */
:root{
  --bg:#0b1220;
  --panel:#121a2b;
  --panel2:#0f1726;
  --text:#e7eefc;
  --muted:#9ab0d0;
  --border:rgba(255,255,255,0.08);
  --primary:#4f8cff;
  --danger:#ff5b6b;
  --ok:#39d98a;
  --shadow: 0 10px 30px rgba(0,0,0,0.35);
  --radius:16px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:var(--sans);
  color:var(--text);
  background: radial-gradient(1200px 800px at 10% 10%, #1b2b55 0%, var(--bg) 50%, #060a12 100%);
}
code,.mono{font-family:var(--mono)}
.topbar{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  padding:14px 18px;
  background:rgba(10,16,28,0.7);
  border-bottom:1px solid var(--border);
  backdrop-filter: blur(10px);
  position:sticky;
  top:0;
  z-index:10;
}
.brand{font-weight:800; letter-spacing:.2px}
.hint{color:var(--muted); font-size:13px}

.wrap{
  display:grid;
  grid-template-columns: 420px 1fr;
  gap:16px;
  padding:16px;
}
.panel{
  background:rgba(18,26,43,0.7);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.panel.left{padding:14px 14px 10px}
.panel.right{padding:14px}

h2{margin:6px 0 10px; font-size:18px}
h3{margin:0 0 8px; font-size:15px}
.small{font-size:12.5px; line-height:1.35}
.muted{color:var(--muted)}

.box{
  background:rgba(15,23,38,0.7);
  border:1px solid var(--border);
  border-radius:14px;
  padding:12px;
  margin:10px 0;
}
.row{display:flex; gap:10px; align-items:center; margin-top:8px}
.row:first-child{margin-top:0}

.btn{
  border:1px solid var(--border);
  background:rgba(255,255,255,0.04);
  color:var(--text);
  padding:9px 12px;
  border-radius:12px;
  cursor:pointer;
  font-weight:650;
  font-size:13px;
  user-select:none;
}
.btn:hover{background:rgba(255,255,255,0.07)}
.btn.primary{background:rgba(79,140,255,0.18); border-color:rgba(79,140,255,0.35)}
.btn.primary:hover{background:rgba(79,140,255,0.26)}
.btn.danger{background:rgba(255,91,107,0.12); border-color:rgba(255,91,107,0.35)}
.btn.danger:hover{background:rgba(255,91,107,0.2)}
.btn.ghost{background:transparent}
.btn.file{position:relative; overflow:hidden}
.btn.file input{position:absolute; inset:0; opacity:0; cursor:pointer}

.input, .textarea{
  width:100%;
  border:1px solid var(--border);
  background:rgba(255,255,255,0.03);
  color:var(--text);
  padding:9px 10px;
  border-radius:12px;
  outline:none;
}
.input:focus,.textarea:focus{border-color:rgba(79,140,255,0.55)}
.smallInput{max-width:120px}

.textarea{font-family:var(--mono); font-size:12px}

.kv{
  display:grid;
  grid-template-columns: 90px 1fr;
  gap:8px 10px;
  margin-top:6px;
  align-items:center;
}
.k{color:var(--muted); font-size:12px}
.v{font-size:12px}

.foot{padding-top:8px}

.canvasHeader{
  display:flex;
  justify-content:space-between;
  gap:16px;
  align-items:flex-start;
  padding-bottom:10px;
}

.stage{
  border-radius:14px;
  border:1px solid var(--border);
  overflow:hidden;
  background: rgba(10,16,28,0.55);
}
svg{display:block; width:100%; height:auto; touch-action:none}

.floor{fill:rgba(255,255,255,0.02)}

.binRect{
  fill:rgba(255,255,255,0.06);
  stroke:rgba(255,255,255,0.30);
  stroke-width:2;
}
.binRect:hover{fill:rgba(255,255,255,0.09)}
.binRect.selected{stroke:rgba(79,140,255,0.85); fill:rgba(79,140,255,0.12)}
.binRect.highlight{stroke:rgba(57,217,138,0.95); fill:rgba(57,217,138,0.20)}

.binLabel{
  font-size:12px;
  fill:rgba(231,238,252,0.9);
  pointer-events:none;
  user-select:none;
}

.drawRect{
  fill:rgba(79,140,255,0.18);
  stroke:rgba(79,140,255,0.85);
  stroke-dasharray:6 4;
  stroke-width:2;
}
.hidden{display:none}

.legend{display:flex; gap:10px; padding-top:10px}
.pill{
  padding:6px 10px;
  border-radius:999px;
  border:1px solid var(--border);
  background:rgba(255,255,255,0.04);
}
.pill.highlight{border-color:rgba(57,217,138,0.55); background:rgba(57,217,138,0.14)}
.pill.selected{border-color:rgba(79,140,255,0.55); background:rgba(79,140,255,0.14)}

@media (max-width: 1100px){
  .wrap{grid-template-columns: 1fr; }
}


/* Resize handle */
.handle{
  fill: rgba(231,238,252,0.75);
  stroke: rgba(0,0,0,0.35);
  stroke-width: 1.5;
  cursor: nwse-resize;
}
.handle:hover{ fill: rgba(231,238,252,0.95); }

/* Contents list */
.contents{
  margin-top:10px;
  border:1px solid var(--border);
  border-radius:12px;
  overflow:hidden;
}
.contents .rowItem{
  display:flex;
  justify-content:space-between;
  gap:10px;
  padding:10px 12px;
  border-top:1px solid var(--border);
  background:rgba(255,255,255,0.02);
}
.contents .rowItem:first-child{border-top:none}
.contents .name{font-weight:700}
.contents .qty{font-family:var(--mono); color:var(--muted)}
.contents .empty{
  padding:10px 12px;
  color:var(--muted);
  font-size:12.5px;
}