:root {
  --bg: #f3efe7;
  --card: #fffdf8;
  --ink: #23201b;
  --muted: #6f675c;
  --line: #e2dacb;
  --accent: #b5372f;
  --accent-ink: #fff;
  --ok: #2f6b4a;
  --warn: #9a5b00;
  --bad: #a3271f;
  --radius: 14px;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
}
* { box-sizing: border-box; }
body { margin: 0; }
.app { max-width: 1280px; margin: 0 auto; padding: 20px 20px 40px; }
.top h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); margin: 0 0 4px; letter-spacing: -0.02em; }
.lede { margin: 0 0 18px; color: var(--muted); max-width: 46em; line-height: 1.45; }
.layout {
  display: grid;
  grid-template-columns: minmax(290px, 360px) 1fr;
  grid-template-areas: "controls stage" "sheet howto";
  gap: 16px;
  align-items: start;
}
.controls { grid-area: controls; }
.stage-card { grid-area: stage; position: sticky; top: 12px; }
.sheet-card { grid-area: sheet; }
.howto { grid-area: howto; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; }
h2 { font-size: 1.02rem; margin: 18px 0 10px; display: flex; align-items: center; gap: 8px; }
h2:first-child { margin-top: 0; }
h3 { font-size: 0.95rem; margin: 16px 0 6px; }
.step { display: inline-grid; place-items: center; width: 1.5em; height: 1.5em; border-radius: 50%; background: var(--ink); color: var(--card); font-size: 0.8rem; }
.help { color: var(--muted); font-size: 0.86rem; line-height: 1.45; margin: 8px 0; }
.units { display: flex; gap: 16px; margin-bottom: 10px; font-size: 0.92rem; }
.dims { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.dims label { font-size: 0.85rem; color: var(--muted); display: grid; gap: 4px; }
.field { display: flex; align-items: center; border: 1px solid var(--line); border-radius: 9px; background: #fff; padding-right: 8px; }
.field:focus-within { outline: 2px solid var(--ink); outline-offset: 1px; }
.field input { width: 100%; min-width: 0; border: 0; background: transparent; padding: 9px 4px 9px 10px; font: inherit; font-size: 1.05rem; color: var(--ink); outline: none; }
.field .u { color: var(--muted); font-size: 0.8rem; }
.range { display: grid; gap: 4px; font-size: 0.9rem; margin-top: 6px; }
.range output { font-weight: 600; }
.range { grid-template-columns: 1fr auto; }
.range input { grid-column: 1 / -1; width: 100%; accent-color: var(--ink); }
.msg { display: grid; gap: 6px; font-size: 0.85rem; color: var(--muted); }
textarea, select { font: inherit; font-size: 1rem; color: var(--ink); border: 1px solid var(--line); border-radius: 9px; padding: 9px 10px; background: #fff; width: 100%; resize: vertical; }
.sel { display: grid; gap: 6px; font-size: 0.85rem; color: var(--muted); }
.swatches { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 6px 0 4px; }
.sw-label { width: 100%; font-size: 0.8rem; color: var(--muted); }
.sw { width: 30px; height: 30px; border-radius: 50%; border: 2px solid #fff; box-shadow: 0 0 0 1px var(--line); background: var(--c); cursor: pointer; padding: 0; }
.sw[aria-checked="true"] { box-shadow: 0 0 0 2px var(--ink); }
.status { margin: 14px 0 10px; padding: 12px 14px; border-radius: 10px; font-size: 0.9rem; line-height: 1.45; border: 1px solid var(--line); background: #fff; }
.status.ok { border-color: #bcd8c5; background: #f1f8f3; }
.status.big { border-color: #ecc0bb; background: #fcf1ef; }
.status b { display: block; margin-bottom: 2px; }
.status .ok-t { color: var(--ok); }
.status .bad-t { color: var(--bad); }
.status .warn { color: var(--warn); display: block; margin-top: 4px; }
button { font: inherit; cursor: pointer; border-radius: 999px; padding: 9px 16px; border: 1px solid var(--ink); }
button.primary { background: var(--ink); color: var(--card); }
button.ghost { background: transparent; color: var(--ink); }
button:disabled { opacity: 0.4; cursor: not-allowed; }
button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.stage {
  position: relative;
  height: min(62vh, 560px);
  min-height: 300px;
  border-radius: 10px;
  background: radial-gradient(ellipse at 50% 60%, #ece5d8 0%, #ddd3c2 70%, #d3c8b5 100%);
  overflow: hidden;
  perspective: 1900px;
  perspective-origin: 50% 40%;
  touch-action: none;
  cursor: grab;
  user-select: none;
}
.stage:active { cursor: grabbing; }
.scene { position: absolute; left: 50%; top: 50%; width: 0; height: 0; transform-style: preserve-3d; transform: translateZ(0); }
.face {
  position: absolute; left: 0; top: 0;
  transform-origin: 0 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  background-repeat: no-repeat;
}
.face.block { background: #7d97b8; border: 1px solid rgba(20, 30, 50, 0.35); display: grid; place-items: center; color: rgba(255, 255, 255, 0.85); font-weight: 600; text-align: center; line-height: 1.2; }
.drag-hint { position: absolute; right: 12px; bottom: 10px; font-size: 0.75rem; color: var(--muted); pointer-events: none; }
.player { display: flex; align-items: center; gap: 10px; margin-top: 12px; }
.player input { flex: 1; accent-color: var(--accent); }
.caption { min-height: 2.6em; margin: 10px 2px 0; color: var(--muted); font-size: 0.92rem; }

.sheet-preview { background: #d9d2c4; border-radius: 10px; padding: 14px; display: grid; place-items: center; }
.sheet-preview svg { width: 100%; max-width: 380px; height: auto; background: #fff; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.18); }
.sheet-preview .nofit { padding: 30px 10px; text-align: center; color: var(--bad); font-size: 0.92rem; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.howto ol { padding-left: 1.3em; margin: 0; line-height: 1.5; font-size: 0.93rem; }
.howto li { margin-bottom: 6px; }
.limits { padding-left: 1.1em; margin: 0; font-size: 0.88rem; color: var(--muted); line-height: 1.5; }
.foot { margin-top: 18px; font-size: 0.8rem; color: var(--muted); text-align: center; }

#print-root { display: none; }

@media (max-width: 860px) {
  .app { padding: 14px 12px 30px; }
  .layout { grid-template-columns: 1fr; grid-template-areas: "controls" "stage" "sheet" "howto"; }
  .stage-card { position: static; }
  .stage { height: 72vw; max-height: 460px; }
}

@media print {
  html, body { margin: 0; padding: 0; background: #fff; }
  .app { display: none !important; }
  #print-root { display: block; }
  #print-root svg { display: block; }
}