:root {
  --bg: #161412;
  --panel: #1f1c19;
  --panel2: #282420;
  --line: #3a342e;
  --text: #f3e9d8;
  --muted: #a99d8b;
  --accent: #ff5d3a;
  --accent2: #ffb347;
  --sel: #3ab8ff;
  --danger: #ff4d6a;
  --radius: 7px;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--bg); color: var(--text);
  font: 13px/1.4 "Inter", system-ui, sans-serif;
  overflow: hidden;
}
button, input, select, textarea { font: inherit; color: inherit; }
button {
  background: var(--panel2); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 6px 11px; cursor: pointer; white-space: nowrap;
}
button:hover { border-color: #5a5047; background: #322d28; }
button.primary { background: var(--accent); border-color: var(--accent); color: #1a0f0a; font-weight: 700; }
button.primary:hover { background: #ff7656; }
button.danger { color: var(--danger); }
button.mini { padding: 3px 8px; font-size: 12px; }
button.icon { width: 32px; padding: 6px 0; font-size: 16px; line-height: 1; }
button.active { border-color: var(--accent); color: var(--accent); }
button:disabled { opacity: .4; cursor: default; }
input[type=text], input[type=number], select, textarea {
  background: var(--bg); border: 1px solid var(--line); border-radius: 5px; padding: 5px 7px; width: 100%;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent2); }
textarea { resize: vertical; min-height: 80px; font-family: "IBM Plex Mono", monospace; font-size: 12px; }
input[type=color] { width: 34px; height: 28px; padding: 0; border: 1px solid var(--line); border-radius: 5px; background: none; cursor: pointer; }
input[type=range] { width: 100%; accent-color: var(--accent); }
input[type=checkbox] { accent-color: var(--accent); }
label { color: var(--muted); font-size: 12px; }

#app {
  display: grid; height: 100vh;
  grid-template-columns: 230px 1fr 270px;
  grid-template-rows: 52px 1fr;
  grid-template-areas: "top top top" "left center right";
}
.topbar {
  grid-area: top; display: flex; align-items: center; gap: 10px; padding: 0 12px;
  background: var(--panel); border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 800; letter-spacing: .02em; font-size: 15px; }
.brand svg { width: 28px; height: 28px; fill: var(--accent); }
.brand svg .w { fill: var(--bg); }
.brand svg circle { fill: var(--text); }
.name-input { max-width: 260px; font-weight: 600; background: transparent !important; border-color: transparent !important; }
.name-input:hover, .name-input:focus { border-color: var(--line) !important; }
.tb-group { display: flex; gap: 3px; }
.zoomlabel { min-width: 60px; }
.spacer { flex: 1; }
.save-state { color: var(--muted); font-size: 12px; }

.left, .right { background: var(--panel); overflow-y: auto; }
.left { grid-area: left; border-right: 1px solid var(--line); display: flex; flex-direction: column; }
.right { grid-area: right; border-left: 1px solid var(--line); padding-bottom: 30px; }
section { padding: 12px; border-bottom: 1px solid var(--line); }
section.grow { flex: 1; border-bottom: none; }
h3 { margin: 0 0 8px; font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); display: flex; align-items: center; justify-content: space-between; }
.row { display: flex; gap: 6px; align-items: center; }
.row.wrap { flex-wrap: wrap; }
.project-list, .layer-list { list-style: none; margin: 0 0 8px; padding: 0; }
.project-list { max-height: 190px; overflow-y: auto; }
.project-list li, .layer-list li {
  padding: 5px 8px; border-radius: 5px; cursor: pointer; display: flex; align-items: center; gap: 6px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.project-list li:hover, .layer-list li:hover { background: var(--panel2); }
.project-list li.active { background: var(--panel2); color: var(--accent2); }
.project-list li small { color: var(--muted); margin-left: auto; font-size: 11px; }
.layer-list li.active { background: #23384a; }
.layer-list li .lname { flex: 1; overflow: hidden; text-overflow: ellipsis; }
.layer-list li .ltype { width: 16px; text-align: center; color: var(--muted); }
.layer-list li button { padding: 0 4px; border: none; background: none; color: var(--muted); font-size: 12px; }
.layer-list li button:hover { color: var(--text); }
.layer-list li.hiddenel .lname { opacity: .4; text-decoration: line-through; }
.add-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 5px; }
.add-grid button { text-align: left; font-size: 12px; padding: 6px 8px; }

.center { grid-area: center; display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.tabs { display: flex; gap: 2px; padding: 8px 12px 0; background: var(--bg); }
.tabs button { border-radius: 7px 7px 0 0; border-bottom: none; background: var(--panel); color: var(--muted); }
.tabs button.active { background: #2b2622; color: var(--text); box-shadow: inset 0 2px 0 var(--accent); }
.tabs .tabinfo { color: var(--muted); font-size: 11px; margin-left: 6px; }
.viewport {
  flex: 1; overflow: auto; position: relative;
  background: #2b2622 radial-gradient(circle, #3a332d 1px, transparent 1px) 0 0/18px 18px;
}
.stage-wrap { position: relative; margin: 60px auto; }
.stage { position: absolute; left: 0; top: 0; transform-origin: 0 0; }
.statusbar { display: flex; justify-content: space-between; gap: 12px; padding: 5px 12px; background: var(--panel); border-top: 1px solid var(--line); font-size: 11px; color: var(--muted); }
.statusbar .hint { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- Surface rendering (shared editor/print) ---------- */
.surface {
  position: relative; overflow: hidden; background: #fff;
  -webkit-print-color-adjust: exact; print-color-adjust: exact;
}
.el { position: absolute; transform-origin: 50% 50%; }
.el.text { white-space: pre-wrap; overflow-wrap: break-word; display: flex; flex-direction: column; }
.el.text .tx { width: 100%; }
.el.image { overflow: hidden; }
.el.image img { width: 100%; height: 100%; display: block; pointer-events: none; user-select: none; }
.el.line .ln { position: absolute; left: 0; top: 50%; width: 100%; transform: translateY(-50%); }

/* ---------- Editor overlays ---------- */
.stage .surface { box-shadow: 0 6px 30px rgba(0,0,0,.45); }
.guides, .overlay { position: absolute; left: 0; top: 0; pointer-events: none; }
.guide-fold { position: absolute; top: 0; bottom: 0; border-left: calc(1px * var(--inv)) dashed rgba(58,184,255,.85); }
.guide-label { position: absolute; top: calc(-18px * var(--inv)); font-size: calc(11px * var(--inv)); color: var(--muted); white-space: nowrap; transform: translateX(-50%); }
.guide-window { position: absolute; border: calc(1px * var(--inv)) dashed rgba(255,93,58,.9); border-radius: 2mm; background: rgba(255,93,58,.06); }
.guide-safe { position: absolute; border: calc(1px * var(--inv)) dotted rgba(0,0,0,.25); }
.surface-dim { position: absolute; font-size: calc(11px * var(--inv)); color: var(--muted); white-space: nowrap; }
.snapline { position: absolute; background: #ff3ad1; }
.snapline.v { width: calc(1px * var(--inv)); top: -2000mm; bottom: -2000mm; }
.snapline.h { height: calc(1px * var(--inv)); left: -2000mm; right: -2000mm; }
.selbox { position: absolute; outline: calc(1.5px * var(--inv)) solid var(--sel); transform-origin: 50% 50%; pointer-events: none; }
.selbox.locked { outline-style: dashed; outline-color: var(--accent2); }
.handle {
  position: absolute; width: calc(10px * var(--inv)); height: calc(10px * var(--inv));
  margin: calc(-5px * var(--inv)) 0 0 calc(-5px * var(--inv));
  background: #fff; border: calc(1.5px * var(--inv)) solid var(--sel); border-radius: 2px; pointer-events: auto;
}
.handle.rot { border-radius: 50%; background: var(--sel); cursor: grab; }
.rot-stem { position: absolute; left: 50%; top: calc(-22px * var(--inv)); height: calc(22px * var(--inv)); border-left: calc(1px * var(--inv)) solid var(--sel); }
.text-editing { outline: calc(1.5px * var(--inv)) solid var(--accent2) !important; cursor: text; }
.text-editing .tx { outline: none; }

/* ---------- Properties panel ---------- */
.props-section { padding: 12px; border-bottom: 1px solid var(--line); }
.props-section h3 { margin-bottom: 10px; }
.field { margin-bottom: 8px; }
.field > label { display: block; margin-bottom: 3px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.grid3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 6px; }
.grid4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; }
.unit { position: relative; }
.unit input { padding-right: 26px; }
.unit::after { content: attr(data-u); position: absolute; right: 7px; top: 50%; transform: translateY(-50%); color: var(--muted); font-size: 11px; pointer-events: none; }
.mini-label { display: block; font-size: 11px; color: var(--muted); margin-bottom: 2px; }
.colorrow { display: flex; gap: 6px; align-items: center; }
.colorrow input[type=text] { flex: 1; }
.seg { display: flex; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.seg button { flex: 1; border: none; border-radius: 0; padding: 5px 0; background: var(--bg); }
.seg button + button { border-left: 1px solid var(--line); }
.seg button.active { background: var(--panel2); color: var(--accent2); }
.btnrow { display: flex; flex-wrap: wrap; gap: 5px; }
.btnrow button { flex: 1 1 auto; font-size: 12px; padding: 5px 7px; }
.empty-note { color: var(--muted); font-size: 12px; }
.check { display: flex; align-items: center; gap: 6px; color: var(--text); font-size: 12px; margin: 4px 0; cursor: pointer; }
.swatches { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 5px; }
.swatches span { width: 18px; height: 18px; border-radius: 4px; border: 1px solid var(--line); cursor: pointer; }

/* ---------- Dialogs ---------- */
.dlg { background: var(--panel); color: var(--text); border: 1px solid var(--line); border-radius: 12px; padding: 0; width: min(640px, 94vw); max-height: 92vh; }
.dlg.wide { width: min(1150px, 96vw); }
.dlg::backdrop { background: rgba(0,0,0,.6); }
.dlg form { padding: 18px 20px; display: flex; flex-direction: column; max-height: 92vh; }
.dlg h2 { margin: 0 0 14px; font-size: 18px; }
.dlg h4 { margin: 16px 0 8px; font-size: 12px; text-transform: uppercase; letter-spacing: .07em; color: var(--accent2); }
.dlg-actions { display: flex; gap: 8px; justify-content: flex-end; align-items: center; margin-top: 16px; padding-top: 12px; border-top: 1px solid var(--line); }
.dlg-actions .note { margin-right: auto; color: var(--muted); font-size: 12px; }
#formatBody { overflow-y: auto; }
.panel-table { width: 100%; border-collapse: collapse; }
.panel-table td { padding: 3px 4px; }
.panel-table td:first-child { width: 50%; }
.help { color: var(--muted); font-size: 12px; margin: 4px 0 8px; }
.print-layout { display: grid; grid-template-columns: 320px 1fr; gap: 18px; min-height: 0; flex: 1; overflow: hidden; }
.print-opts { overflow-y: auto; padding-right: 6px; }
.print-opts .card { background: var(--panel2); border: 1px solid var(--line); border-radius: 9px; padding: 10px 12px; margin-bottom: 10px; }
.print-opts .card h4 { margin: 0 0 6px; display: flex; align-items: center; gap: 8px; }
.print-opts .card.off > *:not(h4) { opacity: .4; pointer-events: none; }
.print-preview-wrap { display: flex; flex-direction: column; min-height: 0; }
.pp-head { color: var(--muted); font-size: 12px; margin-bottom: 8px; }
.print-preview { flex: 1; overflow: auto; display: flex; flex-wrap: wrap; gap: 16px; align-content: flex-start; background: #2b2622; border-radius: 9px; padding: 16px; min-height: 300px; }
.pp-page { position: relative; flex: none; }
.pp-page .pp-inner { position: absolute; left: 0; top: 0; transform-origin: 0 0; box-shadow: 0 4px 18px rgba(0,0,0,.5); }
.pp-cap { position: absolute; bottom: -18px; left: 0; font-size: 11px; color: var(--muted); }

.drop-hint { position: fixed; inset: 0; display: none; place-items: center; font-size: 28px; font-weight: 800; color: var(--accent); background: rgba(22,20,18,.8); border: 4px dashed var(--accent); z-index: 50; pointer-events: none; }
.drop-hint.show { display: grid; }

/* ---------- Print ---------- */
#print-root { display: none; }
.print-page { position: relative; width: 210mm; height: 297mm; overflow: hidden; background: #fff; }
.print-page .pp-content { position: absolute; left: 0; top: 0; width: 210mm; height: 297mm; transform-origin: 0 0; }
.pitem { position: absolute; }
.pitem .surface-holder { position: absolute; left: 0; top: 0; transform-origin: 0 0; }
.cutline { position: absolute; pointer-events: none; }
.foldmark { position: absolute; background: #000; }
.ptitle { position: absolute; font: 7pt "Inter", sans-serif; color: #999; }

@media print {
  @page { size: A4 portrait; margin: 0; }
  html, body { height: auto; overflow: visible; background: #fff; }
  #app, dialog, .drop-hint { display: none !important; }
  #print-root { display: block; }
  .print-page { page-break-after: always; break-after: page; height: 296.8mm; }
  .print-page:last-child { page-break-after: auto; break-after: auto; }
}

@media (max-width: 900px) {
  #app { grid-template-columns: 1fr; grid-template-rows: auto 1fr auto auto; grid-template-areas: "top" "center" "right" "left"; height: auto; min-height: 100vh; }
  body { overflow: auto; }
  .center { min-height: 60vh; }
  .topbar { flex-wrap: wrap; padding: 8px; }
  .print-layout { grid-template-columns: 1fr; overflow: auto; }
}