:root{
  --bg:#f3f5f7;--panel:#fff;--soft:#f8fafb;--line:#dde3e8;--text:#20262d;
  --muted:#6f7882;--orange:#ff8500;--orange-dark:#e87500;--green:#2a9d45;
  --red:#dc4038;--shadow:0 6px 18px rgba(31,41,55,.06)
}
*{box-sizing:border-box}
html,body{margin:0;width:100%;height:100%;font-family:"Segoe UI",Arial,sans-serif;background:var(--bg);color:var(--text);overflow:hidden}
button,input,select{font:inherit}
button{border:1px solid var(--line);background:#fff;border-radius:6px;padding:9px 13px;font-weight:700;cursor:pointer}
button:hover{border-color:#bfc8cf}
button.primary{background:var(--orange);border-color:var(--orange);color:#fff}
button.primary:hover{background:var(--orange-dark)}
button:disabled{opacity:.42;cursor:not-allowed}
.app-shell{height:100vh;display:grid;grid-template-rows:72px 1fr 32px}
.topbar{background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 18px}
.brand{display:flex;align-items:center;gap:9px}
.brand-mark{font-size:40px;font-weight:900;font-style:italic;color:var(--orange)}
.brand-name{font-size:19px;font-weight:800}.brand-name span{color:var(--orange)}
.brand-subtitle{font-size:10px;color:var(--muted);margin-top:2px}
.top-actions{display:flex;gap:8px}
.workspace{padding:10px;display:grid;grid-template-columns:285px 1fr 330px;gap:10px;min-height:0}
.panel{background:#fff;border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow);overflow:hidden}
.left-panel,.right-panel{padding:13px;overflow:auto}
.section-title{color:var(--orange);font-size:12px;font-weight:800}
.drop-zone{border:2px dashed #cbd3da;background:var(--soft);border-radius:8px;padding:25px 12px;text-align:center;margin:12px 0}
.drop-zone.dragging{border-color:var(--orange);background:#fff8ef}
.drop-zone strong{display:block;margin-bottom:5px;font-size:14px;color:var(--text)}.drop-zone span{display:block;font-size:9px;color:var(--muted);font-weight:400}
.file-card{display:grid;grid-template-columns:46px 1fr;gap:10px;align-items:center;border:1px solid var(--line);border-radius:6px;padding:10px;margin-bottom:18px}
.file-icon{width:46px;height:46px;background:#eef2f5;border:1px solid var(--line);display:grid;place-content:center;font-size:10px;font-weight:900;color:var(--muted)}
.file-card strong{display:block;font-size:11px;word-break:break-word}.file-card small{display:block;color:var(--muted);font-size:9px;margin-top:3px}
.material-list{display:grid;gap:7px;margin:11px 0 18px}
.material-card{text-align:left;display:grid;gap:3px}
.material-card span{font-size:9px;color:var(--muted)}
.material-card.active{border:2px solid var(--orange);background:#fff8ef}
.config-title{margin-top:15px}
.field-row{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:11px;font-size:10px}
.field-row input[type=number]{width:72px;padding:6px;border:1px solid var(--line);border-radius:5px}
.checkbox-row input{width:18px;height:18px}
.result-grid{display:grid;grid-template-columns:1fr 1fr;gap:7px;margin-top:11px}
.result-grid article{border:1px solid var(--line);border-radius:6px;padding:9px;text-align:center}
.result-grid span{display:block;color:var(--muted);font-size:9px}.result-grid strong{display:block;font-size:16px;margin-top:4px}
.canvas-panel{display:grid;grid-template-rows:54px 1fr;min-width:0}
.canvas-toolbar{border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 12px}
.canvas-toolbar small{display:block;color:var(--muted);font-size:9px;margin-top:3px}
.canvas-actions{display:flex;gap:6px;align-items:center}.canvas-actions button{width:36px;padding:7px}.canvas-actions select{padding:7px;border:1px solid var(--line);border-radius:5px}
.viewport{position:relative;overflow-x:hidden;overflow-y:auto;background:
linear-gradient(45deg,#eef1f4 25%,transparent 25%),
linear-gradient(-45deg,#eef1f4 25%,transparent 25%),
linear-gradient(45deg,transparent 75%,#eef1f4 75%),
linear-gradient(-45deg,transparent 75%,#eef1f4 75%);
background-size:24px 24px;background-position:0 0,0 12px,12px -12px,-12px 0;cursor:grab}
.viewport.panning{cursor:grabbing}
.empty-state{position:absolute;inset:0;display:grid;place-content:center;text-align:center;color:var(--muted);z-index:1}
.empty-state strong{display:block;color:var(--text);font-size:18px;margin-bottom:6px}.empty-state span{font-size:11px}
.scene{position:relative;left:50%;top:0;transform-origin:0 0;display:none;padding-bottom:80px}
.sheet-canvas{position:relative;background:#fff;border:2px solid #68717a;box-shadow:0 8px 30px rgba(0,0,0,.15);overflow:hidden}
.sheet-label{position:absolute;font-size:10px;color:#68717a;background:rgba(255,255,255,.88);padding:3px 5px;z-index:10}
.sheet-label.bottom{bottom:3px;left:50%;transform:translateX(-50%)}.sheet-label.right{right:3px;top:50%;transform:translateY(-50%) rotate(90deg)}
.nested-piece{position:absolute;overflow:visible}
.nested-piece svg{display:block;width:100%;height:100%;overflow:visible}
.nested-piece.selected{outline:2px solid var(--orange)}
.right-panel{padding:0;display:grid;grid-template-rows:48px 1fr}
.right-head{position:sticky;top:0;z-index:20;background:var(--panel);display:flex;justify-content:space-between;align-items:center;padding:0 12px;border-bottom:1px solid var(--line)}
.right-head span{font-size:9px;color:var(--muted)}.library-head-actions{display:flex;align-items:center;gap:7px}.library-action{border:1px solid #cfd6dc;background:#fff;border-radius:6px;padding:5px 7px;font-size:8px;font-weight:800;cursor:pointer;white-space:nowrap;color:#315b8a}.library-action:hover:not(:disabled){border-color:var(--orange);color:#b85c00;background:#fff8ef}.library-action:disabled{opacity:.45;cursor:not-allowed}
.piece-list{overflow:auto;padding:9px}
.piece-row{display:grid;grid-template-columns:72px 1fr 78px;gap:8px;align-items:center;border:1px solid var(--line);border-radius:6px;padding:7px;margin-bottom:7px;cursor:pointer}
.piece-row:hover{border-color:#bfc8cf}.piece-row.active{border-color:var(--orange);background:#fff8ef}
.piece-thumb{width:72px;height:55px;border:1px solid var(--line);background:#fff;object-fit:contain}
.piece-row strong{display:block;font-size:10px}.piece-row small{display:block;color:var(--muted);font-size:8px;margin-top:3px}
.qty-control{display:flex;align-items:center;justify-content:center;gap:4px;background:#eef2f5;border:1px solid var(--line);border-radius:7px;padding:3px}.qty-btn{width:22px;height:22px;border:1px solid #cfd6dc;background:#fff;border-radius:5px;font-size:14px;line-height:18px;font-weight:800;cursor:pointer}.qty-btn:hover{border-color:var(--orange);color:#b85c00;background:#fff8ef}.qty-value{min-width:20px;text-align:center;font-size:10px;font-weight:800;color:var(--text)}
.structure-empty{padding:35px 10px;text-align:center;color:var(--muted);font-size:10px}
.statusbar{background:#fff;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 15px;color:var(--muted);font-size:10px}
.statusbar i{display:inline-block;width:8px;height:8px;background:var(--green);border-radius:50%;margin-left:5px}
.analysis-host{position:fixed;left:-100000px;top:-100000px;width:30000px;height:30000px;opacity:0;pointer-events:none;overflow:visible;display:block}
@media(max-width:1100px){.workspace{grid-template-columns:265px 1fr}.right-panel{display:none}}


/* Build 0.6.2.4 — contornos visíveis no preview */
.nested-piece svg path,
.nested-piece svg rect,
.nested-piece svg circle,
.nested-piece svg ellipse,
.nested-piece svg polygon,
.nested-piece svg polyline,
.nested-piece svg line,
.nested-piece svg use {
  fill: none !important;
  stroke-width: 0.85px !important;
  vector-effect: non-scaling-stroke !important;
  stroke-linejoin: round !important;
  stroke-linecap: round !important;
}


/* Build 0.6.2.5 — múltiplas chapas em rolagem vertical */
.sheet-stack{
  display:flex;
  flex-direction:column;
  gap:48px;
}
.sheet-section{
  display:grid;
  gap:8px;
}
.sheet-heading{
  display:flex;
  justify-content:space-between;
  align-items:center;
  font-size:11px;
  color:var(--text);
}
.sheet-heading span{
  color:var(--muted);
  font-size:9px;
}
.sheet-section .sheet-canvas{
  position:relative;
  flex:none;
}


/* Build 0.6.3 — mudança exclusiva da logo */
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  min-width:0;
}

.brand-logo{
  display:block;
  width:238px;
  max-width:28vw;
  height:52px;
  object-fit:contain;
  object-position:left center;
}

.brand-build{
  align-self:flex-end;
  margin-bottom:7px;
  color:var(--muted);
  font-size:9px;
  white-space:nowrap;
}

@media(max-width:900px){
  .brand-logo{
    width:190px;
    height:46px;
  }

  .brand-build{
    display:none;
  }
}


/* Build 0.6.4 - botão de relatório gerencial */
@media(max-width:1250px){
  .top-actions{
    gap:5px;
  }

  .top-actions button{
    padding-left:9px;
    padding-right:9px;
    font-size:10px;
  }
}

.pwa-install-panel{position:fixed;left:50%;bottom:18px;transform:translateX(-50%);z-index:99999;width:min(720px,calc(100vw - 32px))}
.pwa-install-panel[hidden]{display:none!important}
.pwa-install-content{display:grid;grid-template-columns:48px minmax(0,1fr) auto 30px;gap:12px;align-items:center;padding:12px 14px;background:rgba(24,29,34,.97);color:#fff;border-radius:10px;box-shadow:0 14px 40px rgba(0,0,0,.28)}
.pwa-install-icon{width:48px;height:48px;display:grid;place-items:center;border-radius:9px;background:#ff8500;color:#fff;font-size:25px;font-weight:900;font-style:italic}
.pwa-install-copy strong{display:block;font-size:12px;margin-bottom:4px}.pwa-install-copy span{display:block;color:#cbd2d8;font-size:9px;line-height:1.4}
.pwa-install-button{border:1px solid #ff8500;background:#ff8500;color:#fff;font-size:9px;font-weight:800;white-space:nowrap}
.pwa-install-close{border:0;background:transparent;color:#aeb7bf;font-size:22px;line-height:1;padding:2px}


/* Build 0.7.0-alpha.4 — UX Polish 2: Sheet Orientation */
.sheet-orientation-block{
  margin:10px 0 4px;
  padding:10px;
  border:1px solid var(--line);
  border-radius:8px;
  background:#fff;
}
.sheet-orientation-label{
  display:block;
  margin-bottom:8px;
  font-size:10px;
  font-weight:700;
  color:#4f5963;
}
.sheet-orientation{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:7px;
}
.orientation-btn{
  min-height:48px;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:7px 8px;
  border:1px solid #cfd6dc;
  border-radius:7px;
  background:#fff;
  color:#28313a;
  font-size:10px;
  font-weight:700;
  cursor:pointer;
  transition:border-color .14s ease, background .14s ease, box-shadow .14s ease;
}
.orientation-btn:hover{
  border-color:#aeb8c1;
}
.orientation-btn.active{
  border:2px solid var(--orange);
  background:#fff8ef;
  box-shadow:0 0 0 1px rgba(255,122,0,.08);
}
.orientation-icon{
  display:inline-block;
  border:2px solid currentColor;
  border-radius:2px;
  color:#68717a;
}
.orientation-btn.active .orientation-icon{
  color:var(--orange);
}
.orientation-icon.horizontal{
  width:22px;
  height:12px;
}
.orientation-icon.vertical{
  width:12px;
  height:22px;
}


/* UX Polish 2 Hotfix 1 — Vertical sheets preview */
.viewport.vertical-sheets{
  overflow-x:auto;
  overflow-y:hidden;
}
.sheet-stack.vertical-layout{
  display:flex;
  flex-direction:row;
  align-items:flex-start;
  gap:48px;
  width:max-content;
}
.sheet-stack.vertical-layout .sheet-section{
  flex:none;
}

.piece-main{min-width:0}
.piece-actions{display:flex;gap:4px;margin-top:6px;flex-wrap:wrap}.piece-action.duplicate{color:#315b8a}
.piece-action{border:1px solid #cfd6dc;background:#fff;border-radius:5px;padding:4px 6px;font-size:8px;font-weight:700;cursor:pointer;white-space:nowrap}
.piece-action:hover{border-color:var(--orange);color:#b85c00;background:#fff8ef}
.piece-action.duplicate{color:#315b8a}
.piece-action.split{color:#8a4f31}