/* ═══════════════════════════════════════════════════
   DXF2CNC — Industrial Precision Design System
   Aesthetic: CNC machine display / precision tooling
   Fonts: JetBrains Mono (monospace dominant) + DM Sans
   Color: Near-black steel, amber accent, dim green
═══════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600&family=JetBrains+Mono:wght@400;500;700&display=swap');

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}

:root{
  /* Steel palette */
  --bg:      #090909;
  --bg2:     #0d0d0d;
  --bg3:     #111;
  --plate:   #141414;
  --plate2:  #1a1a1a;
  --plate3:  #222;
  --border:  rgba(255,255,255,.06);
  --border2: rgba(255,255,255,.1);
  --border3: rgba(255,255,255,.16);

  /* Text */
  --text:    #e8e8e0;
  --sub:     #888880;
  --muted:   #444440;
  --dim:     #2a2a28;

  /* Amber accent — the ONE color */
  --amber:   #f0a500;
  --amber2:  #ffc340;
  --amber-d: rgba(240,165,0,.12);
  --amber-b: rgba(240,165,0,.25);

  /* Operation colors — industrial */
  --c-drill:   #4af0c8;  /* cutting teal */
  --c-pocket:  #a78bfa;  /* deep violet */
  --c-contour: #f0a500;  /* amber — matches accent */
  --c-groove:  #60a5fa;  /* steel blue */
  --c-route:   #f87171;  /* warning red */

  /* Functional */
  --green:  #22dd88;
  --red:    #ff4455;
}

html,body{height:100%;overflow:hidden;}
body{
  background:var(--bg);
  color:var(--text);
  font-family:'DM Sans',sans-serif;
  font-size:13px;
  -webkit-font-smoothing:antialiased;
  display:flex;flex-direction:column;
}

/* ── TOPBAR ─────────────────────────────── */
.topbar{
  height:48px;flex-shrink:0;
  display:flex;align-items:center;gap:0;
  border-bottom:1px solid var(--border);
  background:var(--bg);
  position:relative;z-index:50;
}

/* Logo — left side fixed plate */
.logo{
  display:flex;align-items:center;gap:10px;
  padding:0 18px;height:100%;
  border-right:1px solid var(--border);
  flex-shrink:0;
  font-family:'JetBrains Mono',monospace;
  font-size:13px;font-weight:700;
  letter-spacing:.08em;
  color:var(--text);
  user-select:none;
}
.logo-mark{
  width:28px;height:28px;
  background:var(--amber);
  color:#000;
  font-family:'JetBrains Mono',monospace;
  font-size:11px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  clip-path:polygon(4px 0%,100% 0%,calc(100% - 4px) 100%,0% 100%);
}
.logo-ver{
  font-size:9px;color:var(--muted);
  font-family:'JetBrains Mono',monospace;
  letter-spacing:.15em;
  align-self:flex-end;margin-bottom:10px;
}

/* File button */
.topbar-file{
  display:flex;align-items:center;gap:8px;
  padding:0 16px;height:100%;
  border-right:1px solid var(--border);
  flex-shrink:0;
  font-family:'JetBrains Mono',monospace;
  font-size:11px;color:var(--text);
  cursor:pointer;
  transition:background .15s,color .15s;
  letter-spacing:.04em;
}
.topbar-file:hover{background:var(--plate);color:var(--amber);}
.topbar-file svg{opacity:.6;flex-shrink:0;}

/* View switcher — segmented, center */
.topbar-center{
  flex:1;display:flex;align-items:center;
  justify-content:center;gap:0;
  padding:0 20px;
}
.view-tabs{
  display:flex;
  border:1px solid var(--border2);
  border-radius:3px;
  overflow:hidden;
}
.view-btn{
  padding:5px 20px;
  font-family:'JetBrains Mono',monospace;
  font-size:11px;font-weight:600;
  letter-spacing:.08em;text-transform:uppercase;
  border:none;cursor:pointer;
  background:none;color:var(--sub);
  transition:all .15s;
  border-right:1px solid var(--border);
  white-space:nowrap;
}
.view-btn:last-child{border-right:none;}
.view-btn:hover:not(.active){background:var(--plate);color:var(--text);}
.view-btn.active{background:var(--amber);color:#000;font-weight:700;}

/* Right actions */
.topbar-actions{
  display:flex;align-items:center;gap:2px;
  padding:0 12px;height:100%;
  border-left:1px solid var(--border);
  flex-shrink:0;
}
.btn{
  display:inline-flex;align-items:center;gap:5px;
  padding:5px 12px;
  font-family:'JetBrains Mono',monospace;
  font-size:11px;font-weight:500;letter-spacing:.06em;
  border:1px solid transparent;
  border-radius:2px;cursor:pointer;
  transition:all .15s;white-space:nowrap;
}
.btn-ghost{
  background:none;color:var(--text);
  border-color:var(--border2);
}
.btn-ghost:hover:not(:disabled){color:var(--amber);border-color:var(--amber);background:var(--plate);}
.btn-ghost:disabled{opacity:.25;cursor:not-allowed;}
.btn-primary{
  background:var(--amber);color:#000;
  font-weight:700;border-color:var(--amber);
}
.btn-primary:hover:not(:disabled){background:var(--amber2);border-color:var(--amber2);}
.btn-primary:disabled{opacity:.35;cursor:not-allowed;}
.btn-green{
  background:rgba(34,221,136,.1);color:var(--green);
  border-color:rgba(34,221,136,.25);
}
.btn-green:hover{background:rgba(34,221,136,.18);}
.btn-icon{padding:5px 8px;font-size:14px;}
.tb-sep{width:1px;height:22px;background:var(--border);margin:0 6px;}

/* ── WORKSPACE ────────────────────────── */
.workspace{flex:1;display:flex;overflow:hidden;}

/* ── LEFT PANEL ──────────────────────── */
.left-panel{
  width:196px;flex-shrink:0;
  border-right:1px solid var(--border);
  background:var(--bg2);
  display:flex;flex-direction:column;overflow:hidden;
}
.panel-head{
  padding:9px 12px 8px;
  font-family:'JetBrains Mono',monospace;
  font-size:9px;font-weight:700;
  letter-spacing:.18em;text-transform:uppercase;
  color:var(--muted);
  border-bottom:1px solid var(--border);
  flex-shrink:0;
  display:flex;align-items:center;justify-content:space-between;
}
.panel-count{
  color:var(--amber);
  font-family:'JetBrains Mono',monospace;
  font-size:11px;font-weight:700;letter-spacing:0;
}
.entity-list{flex:1;overflow-y:auto;}
.entity-item{
  display:flex;align-items:center;gap:7px;
  padding:7px 12px;
  border-bottom:1px solid rgba(255,255,255,.03);
  cursor:pointer;transition:background .1s;
  user-select:none;min-height:36px;
}
.entity-item:hover{background:var(--plate);}
.entity-item.sel1{
  background:rgba(240,165,0,.08);
  border-left:2px solid var(--amber);
  padding-left:10px;
}
.entity-item.selN{background:rgba(240,165,0,.04);}
.op-dot{width:6px;height:6px;flex-shrink:0;clip-path:polygon(50% 0%,100% 50%,50% 100%,0% 50%);}
.ent-info{flex:1;min-width:0;}
.ent-type{
  font-family:'JetBrains Mono',monospace;
  font-size:10px;font-weight:500;
  color:var(--sub);letter-spacing:.05em;
}
.ent-detail{
  font-family:'JetBrains Mono',monospace;
  font-size:9px;color:var(--muted);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.op-sum{
  flex-shrink:0;
  border-bottom:1px solid var(--border);
  background:var(--bg3);
  max-height:40vh;
  overflow-y:auto;
  display:flex;flex-direction:column;
}
.op-sum-title{
  font-family:'JetBrains Mono',monospace;
  font-size:9px;font-weight:700;letter-spacing:.2em;text-transform:uppercase;
  color:var(--amber);
  padding:8px 12px 6px;
  display:flex;align-items:center;justify-content:space-between;
  position:sticky;top:0;background:var(--bg3);z-index:1;
  border-bottom:1px solid rgba(240,165,0,.15);
  flex-shrink:0;
}
.op-sum-title::after{
  content:attr(data-count);
  background:rgba(240,165,0,.15);
  color:var(--amber);
  font-size:10px;padding:1px 7px;border-radius:2px;
  font-weight:700;
}
.op-sum-row{
  display:flex;align-items:center;justify-content:space-between;
  padding:7px 12px;cursor:pointer;
  border-top:1px solid rgba(255,255,255,.04);
  transition:background .12s;
  gap:8px;
}
.op-sum-row:hover{background:rgba(255,255,255,.05);}
.op-sum-row:hover .op-sum-del{opacity:1;}
.op-sum-name{
  display:flex;align-items:center;gap:8px;
  font-family:'JetBrains Mono',monospace;
  font-size:11px;font-weight:700;letter-spacing:.06em;
  flex:1;min-width:0;overflow:hidden;
  text-transform:uppercase;
}
.op-sum-ent{
  font-weight:400;font-size:10px;letter-spacing:.02em;
  text-transform:none;
  color:var(--sub);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  max-width:90px;
}
.op-sum-icon{
  width:18px;height:18px;border-radius:2px;
  display:flex;align-items:center;justify-content:center;
  font-size:11px;flex-shrink:0;
  border:1.5px solid currentColor;
  opacity:.9;
}
.op-sum-del{
  background:none;border:none;
  color:var(--muted);cursor:pointer;
  font-size:13px;padding:2px 5px;line-height:1;
  border-radius:2px;transition:all .12s;
  flex-shrink:0;opacity:0;
}
.op-sum-del:hover{color:#ff4455;background:rgba(255,68,85,.15);}


/* ── CANVAS ──────────────────────────── */
.canvas-area{
  flex:1;position:relative;overflow:hidden;
  background:var(--bg2);
  /* Precision grid — fine + coarse */
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px),
    linear-gradient(rgba(255,255,255,.09) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.09) 1px,transparent 1px);
  background-size:10px 10px,10px 10px,50px 50px,50px 50px;
}
#mainSvg{width:100%;height:100%;display:block;}
#selRect{
  stroke:var(--amber);stroke-width:1;
  fill:rgba(240,165,0,.06);
  stroke-dasharray:4,3;display:none;
}

/* Canvas toolbar — bottom center */
.canvas-tools{
  position:absolute;bottom:14px;left:50%;transform:translateX(-50%);
  display:flex;align-items:center;gap:0;
  background:var(--plate2);
  border:1px solid var(--border2);
  border-radius:2px;
  overflow:hidden;
}
.tool-btn{
  width:34px;height:32px;
  display:flex;align-items:center;justify-content:center;
  font-size:14px;cursor:pointer;
  background:none;border:none;border-right:1px solid var(--border);
  color:var(--sub);
  transition:all .12s;font-family:'JetBrains Mono',monospace;
}
.tool-btn:last-child{border-right:none;}
.tool-btn:hover{background:var(--plate3);color:var(--amber);}
.view-angle-btn{font-size:9px;letter-spacing:.04em;width:36px;}
.view-angle-btn.active{color:var(--amber);background:rgba(251,191,36,.08);}
.tool-sep{width:1px;height:100%;background:var(--border);}
.zoom-lbl{
  font-family:'JetBrains Mono',monospace;
  font-size:10px;color:var(--muted);
  min-width:46px;text-align:center;
  padding:0 2px;
}
.canvas-hint{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  text-align:center;pointer-events:none;
}
.canvas-hint h3{
  font-family:'JetBrains Mono',monospace;
  font-size:13px;font-weight:500;
  color:var(--muted);letter-spacing:.1em;
  margin-bottom:8px;
}
.canvas-hint p{font-size:12px;color:var(--dim);}

/* ── SIM PANEL ───────────────────────── */
.sim-panel{
  position:absolute;bottom:58px;left:50%;transform:translateX(-50%);
  background:var(--plate2);border:1px solid var(--border2);
  border-radius:2px;padding:10px 14px;
  display:none;align-items:center;gap:12px;
  z-index:40;box-shadow:0 8px 32px rgba(0,0,0,.6);
  min-width:340px;
}
.sim-panel.show{display:flex;}
.sim-ctrl{display:flex;gap:4px;}
.sim-btn2{
  width:28px;height:28px;border-radius:2px;
  border:1px solid var(--border2);
  background:var(--plate3);color:var(--text);
  cursor:pointer;display:flex;align-items:center;justify-content:center;
  font-size:11px;transition:all .15s;
  font-family:'JetBrains Mono',monospace;
}
.sim-btn2:hover{background:var(--plate);border-color:var(--border3);}
.sim-btn2.playing{background:var(--amber);border-color:var(--amber);color:#000;}
.sim-prog{flex:1;min-width:120px;}
.sim-bar-bg{
  height:2px;background:var(--plate3);
  border-radius:0;overflow:hidden;margin-bottom:5px;
}
.sim-bar-fill{
  height:100%;background:var(--amber);
  width:0%;transition:width .05s linear;
}
.sim-info{
  font-family:'JetBrains Mono',monospace;
  font-size:10px;color:var(--muted);letter-spacing:.05em;
}
.sim-spd{
  display:flex;align-items:center;gap:6px;
  font-family:'JetBrains Mono',monospace;
  font-size:10px;color:var(--muted);
}
.sim-spd select{
  background:var(--plate3);border:1px solid var(--border2);
  border-radius:2px;color:var(--text);
  padding:3px 5px;font-size:10px;
  font-family:'JetBrains Mono',monospace;outline:none;
}
.sim-x{
  background:none;border:none;
  color:var(--muted);cursor:pointer;
  font-size:14px;padding:2px;
  transition:color .15s;
}
.sim-x:hover{color:var(--red);}

/* ── DROP OVERLAY ────────────────────── */
.drop-overlay{
  position:absolute;inset:0;z-index:100;
  background:rgba(9,9,9,.92);backdrop-filter:blur(4px);
  display:flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;transition:opacity .2s;
}
.drop-overlay.active{opacity:1;pointer-events:all;}
.drop-box{
  border:1px solid var(--amber);
  border-radius:2px;padding:60px 80px;text-align:center;
  background:rgba(240,165,0,.04);
}
.drop-box h2{
  font-family:'JetBrains Mono',monospace;
  font-size:14px;font-weight:700;
  letter-spacing:.1em;text-transform:uppercase;
  color:var(--amber);margin-top:12px;
}

/* ── RIGHT PANEL ─────────────────────── */
.right-panel{
  width:272px;flex-shrink:0;
  border-left:1px solid var(--border);
  background:var(--bg2);
  display:flex;flex-direction:column;overflow:hidden;
}
.r-empty{
  flex:1;display:flex;flex-direction:column;
  align-items:center;justify-content:center;
  padding:24px;text-align:center;color:var(--muted);
}
.r-empty-icon{font-size:28px;margin-bottom:12px;opacity:.3;}
.r-empty p{
  font-size:11px;line-height:1.9;
  font-family:'JetBrains Mono',monospace;
  color:var(--muted);letter-spacing:.03em;
}
kbd{
  background:var(--plate2);border:1px solid var(--border2);
  padding:1px 5px;border-radius:2px;
  font-size:10px;font-family:'JetBrains Mono',monospace;
  color:var(--sub);
}

/* Props panel */
.props{overflow-y:auto;flex:1;}
.p-section{
  padding:11px 14px;
  border-bottom:1px solid var(--border);
}
.p-label{
  font-family:'JetBrains Mono',monospace;
  font-size:9px;font-weight:700;
  letter-spacing:.18em;text-transform:uppercase;
  color:var(--muted);margin-bottom:8px;
}
.p-row{
  display:flex;align-items:center;justify-content:space-between;
  padding:3px 0;
}
.p-key{
  font-family:'JetBrains Mono',monospace;
  font-size:10px;color:var(--muted);letter-spacing:.05em;
}
.p-val{
  font-family:'JetBrains Mono',monospace;
  font-size:10px;color:var(--text);
}

/* Operation buttons */
.op-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:4px;margin-bottom:10px;
}
.op-btn{
  padding:9px 6px;border-radius:2px;
  border:1px solid var(--border2);
  background:var(--plate);
  cursor:pointer;text-align:center;
  transition:all .15s;
}
.op-btn:hover{border-color:var(--border3);background:var(--plate2);}
.op-btn.active{border-color:var(--amber);background:rgba(240,165,0,.1);}
.op-icon{font-size:15px;margin-bottom:3px;}
.op-lbl{
  font-family:'JetBrains Mono',monospace;
  font-size:9px;font-weight:700;
  letter-spacing:.1em;text-transform:uppercase;
  color:var(--sub);
}
.op-btn.active .op-lbl{color:var(--amber);}

/* Fields */
.field{margin-bottom:7px;}
.field label{
  display:block;
  font-family:'JetBrains Mono',monospace;
  font-size:9px;color:var(--muted);
  letter-spacing:.1em;text-transform:uppercase;
  margin-bottom:3px;
}
.field input,.field select{
  width:100%;padding:5px 8px;
  background:var(--bg3);
  border:1px solid var(--border2);
  border-radius:2px;
  color:var(--text);
  font-family:'JetBrains Mono',monospace;
  font-size:11px;outline:none;
  transition:border-color .15s;
}
.field input:focus,.field select:focus{border-color:var(--amber);}
.frow{display:grid;grid-template-columns:1fr 1fr;gap:6px;}
.fu{position:relative;}
.fu input{padding-right:26px;}
.fu-lbl{
  position:absolute;right:7px;top:50%;transform:translateY(-50%);
  font-size:9px;color:var(--muted);pointer-events:none;
  font-family:'JetBrains Mono',monospace;
}

/* Side selector */
.side-row{display:grid;grid-template-columns:1fr 1fr;gap:4px;margin-bottom:8px;}
.side-btn{
  padding:8px 4px;border-radius:2px;
  border:1px solid var(--border2);
  cursor:pointer;text-align:center;
  transition:all .15s;background:var(--plate);
}
.side-btn:hover{border-color:var(--border3);}
.side-btn.sl{border-color:var(--c-groove);background:rgba(96,165,250,.08);}
.side-btn.sr{border-color:var(--amber);background:rgba(240,165,0,.08);}
.side-icon{font-size:15px;}
.side-lbl{
  font-family:'JetBrains Mono',monospace;
  font-size:9px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;
  color:var(--sub);
}
.side-btn.sl .side-lbl{color:var(--c-groove);}
.side-btn.sr .side-lbl{color:var(--amber);}

/* Comp canvas */
.comp-wrap{border-radius:0;overflow:hidden;border:1px solid var(--border);margin-bottom:8px;}
#compCanvas{width:100%;height:68px;display:block;background:var(--bg3);}
.comp-lbl{
  padding:3px 8px;font-size:9px;
  font-family:'JetBrains Mono',monospace;
  color:var(--muted);background:var(--plate);
  text-align:center;letter-spacing:.08em;text-transform:uppercase;
}

/* Apply / clear buttons */
.apply-btn{
  width:100%;padding:8px;
  border-radius:2px;
  background:var(--amber);color:#000;
  border:none;
  font-family:'JetBrains Mono',monospace;
  font-size:10px;font-weight:700;
  letter-spacing:.1em;text-transform:uppercase;
  cursor:pointer;transition:all .15s;margin-top:4px;
}
.apply-btn:hover{background:var(--amber2);}
.clear-btn{
  width:100%;padding:6px;
  border-radius:2px;
  background:none;color:var(--muted);
  border:1px solid var(--border);
  font-family:'JetBrains Mono',monospace;
  font-size:10px;cursor:pointer;transition:all .15s;margin-top:4px;
}
.clear-btn:hover{border-color:var(--red);color:var(--red);}

/* Multi banner */
.multi-banner{
  padding:10px 14px;
  background:rgba(240,165,0,.06);
  border-bottom:1px solid rgba(240,165,0,.15);
  font-family:'JetBrains Mono',monospace;
  font-size:10px;color:var(--amber);
  letter-spacing:.05em;
  flex-shrink:0;
}

/* ── MATERIAL PANEL ──────────────────── */
.mat-panel{
  flex-shrink:0;
  border-bottom:2px solid var(--border2);
  border-top:2px solid rgba(240,165,0,.35);
  background:var(--bg3);
}
.mat-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:11px 14px;cursor:pointer;user-select:none;
  transition:background .15s;
}
.mat-head:hover{background:rgba(255,255,255,.03);}
.mat-title{
  font-family:'JetBrains Mono',monospace;
  font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--text);display:flex;align-items:center;gap:8px;
}
.mat-title-icon{
  width:20px;height:20px;border:2px solid var(--amber);
  display:flex;align-items:center;justify-content:center;
  font-size:10px;color:var(--amber);flex-shrink:0;
}
.mat-status{
  font-size:9px;
  background:rgba(240,165,0,.1);
  border:1px solid rgba(240,165,0,.25);
  color:var(--amber);
  font-family:'JetBrains Mono',monospace;
  font-weight:700;letter-spacing:.06em;text-transform:uppercase;
  padding:2px 7px;border-radius:2px;
}
.mat-status.mat-status-set{
  background:rgba(16,185,129,.12);
  border-color:rgba(16,185,129,.3);
  color:#10b981;
}
.mat-chevron{font-size:10px;color:var(--muted);transition:transform .2s;}
.mat-chevron.open{transform:rotate(180deg);}
.mat-body{padding:0 14px 12px;display:none;}
.mat-body.open{display:block;}
.mat-dims{display:grid;grid-template-columns:1fr 1fr 1fr;gap:5px;margin-bottom:10px;}
.mat-box-vis{position:relative;width:100%;height:52px;margin-bottom:8px;}
.mat-box-svg{width:100%;height:100%;}
.allowance-grid{display:grid;grid-template-columns:1fr 1fr;gap:4px;margin-bottom:8px;}
.allowance-all{margin-bottom:6px;}
.allow-lbl{
  font-family:'JetBrains Mono',monospace;
  font-size:9px;color:var(--muted);
  margin-bottom:3px;letter-spacing:.08em;text-transform:uppercase;
}
.mat-apply{
  width:100%;padding:7px;border-radius:2px;
  background:var(--plate3);color:var(--text);
  border:1px solid var(--border2);
  font-family:'JetBrains Mono',monospace;
  font-size:10px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;
  cursor:pointer;transition:all .15s;margin-top:4px;
}
.mat-apply:hover{background:var(--amber);border-color:var(--amber);color:#000;}
.mat-from-geom{
  width:100%;padding:7px 10px;border-radius:2px;
  background:rgba(240,165,0,.06);color:var(--amber);
  border:1px dashed rgba(240,165,0,.3);
  font-family:'JetBrains Mono',monospace;
  font-size:10px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;
  cursor:pointer;transition:all .15s;margin-bottom:4px;
  display:flex;align-items:center;justify-content:center;gap:6px;
}
.mat-from-geom:hover{background:rgba(240,165,0,.12);border-color:var(--amber);}
.mat-from-geom.active{background:rgba(34,221,136,.08);color:var(--green);border-color:rgba(34,221,136,.3);}

/* ── EXPORT VIEW ─────────────────────── */
#exportView{display:none;flex:1;flex-direction:column;overflow:hidden;}
#exportView.show{display:flex;}
.export-nav{
  display:flex;gap:0;
  border-bottom:1px solid var(--border);flex-shrink:0;
  background:var(--bg2);
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:none;
}
.export-nav::-webkit-scrollbar{display:none;}
.exp-tab{
  padding:9px 18px;
  font-family:'JetBrains Mono',monospace;
  font-size:10px;font-weight:500;letter-spacing:.1em;text-transform:uppercase;
  color:var(--muted);cursor:pointer;
  border-bottom:2px solid transparent;transition:all .15s;
  border-right:1px solid var(--border);
}
.exp-tab:hover{color:var(--sub);background:var(--plate);}
.exp-tab.active{color:var(--amber);border-bottom-color:var(--amber);background:var(--plate);}
.exp-body{flex:1;display:flex;flex-direction:column;padding:16px;gap:0;overflow:hidden;}
.exp-topbar{
  display:flex;align-items:center;gap:12px;flex-shrink:0;
  padding-bottom:12px;border-bottom:1px solid var(--border);margin-bottom:12px;
}
.exp-topbar .exp-stats{flex:1;margin:0;}
.exp-panels{
  flex:1;display:flex;gap:12px;overflow:hidden;min-height:0;
}
.exp-panel-left{
  width:320px;flex-shrink:0;display:flex;flex-direction:column;
  border:1px solid var(--border);overflow:hidden;
}
.exp-panel-right{
  flex:1;display:flex;flex-direction:column;
  border:1px solid var(--border);overflow:hidden;min-width:0;
}
.exp-panel-head{
  padding:8px 14px;background:var(--plate2);border-bottom:1px solid var(--border);
  font-family:'JetBrains Mono',monospace;font-size:10px;font-weight:600;
  letter-spacing:.12em;color:var(--sub);flex-shrink:0;
}
.exp-panel-scroll{flex:1;overflow-y:auto;padding:12px;}
.exp-op-group{margin-bottom:16px;}
.exp-op-group-head{
  display:flex;align-items:center;gap:7px;margin-bottom:7px;
}
.exp-op-group-label{
  font-family:'JetBrains Mono',monospace;font-size:10px;font-weight:700;
  letter-spacing:.1em;
}
.exp-op-group-count{
  font-family:'JetBrains Mono',monospace;font-size:9px;color:var(--muted);
}
.exp-op-card{
  background:var(--plate);border:1px solid var(--border);
  border-radius:4px;padding:8px 10px;margin-bottom:5px;
  display:flex;flex-direction:column;gap:5px;
}
.exp-op-pos{
  font-family:'JetBrains Mono',monospace;font-size:10px;color:var(--sub);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.exp-op-tags{display:flex;flex-wrap:wrap;gap:3px;}
.exp-op-tag{
  border-radius:3px;padding:2px 6px;
  font-family:'JetBrains Mono',monospace;font-size:9px;
  background:var(--plate2);
}
.code-wrap{
  flex:1;border:1px solid var(--border);
  border-radius:0;overflow:hidden;display:flex;flex-direction:column;
}
.code-bar{
  padding:8px 12px;background:var(--plate2);
  border-bottom:1px solid var(--border);
  display:flex;align-items:center;gap:6px;
}
.cdot{width:10px;height:10px;border-radius:50%;}
.code-fname{
  font-family:'JetBrains Mono',monospace;font-size:11px;
  color:var(--sub);margin-left:4px;flex:1;
}
.code-body{flex:1;overflow:auto;background:var(--bg);}
.code-body pre{
  padding:14px 18px;
  font-family:'JetBrains Mono',monospace;
  font-size:11px;line-height:2;
  color:#6af0c0;white-space:pre;
}
.exp-stats{display:flex;gap:8px;flex-shrink:0;}
.stat-box{
  flex:1;background:var(--plate);
  border:1px solid var(--border);
  border-radius:0;padding:10px 12px;
}
.stat-v{
  font-family:'JetBrains Mono',monospace;
  font-size:18px;font-weight:700;color:var(--amber);
}
.stat-l{
  font-family:'JetBrains Mono',monospace;
  font-size:9px;color:var(--muted);margin-top:2px;
  text-transform:uppercase;letter-spacing:.1em;
}

/* ── 3D VIEW ─────────────────────────── */
.view3d-wrap{flex:1;display:none;flex-direction:column;overflow:hidden;background:#050505;}
.view3d-wrap.show{display:flex;}
.three-header{
  height:40px;flex-shrink:0;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 16px;
  border-bottom:1px solid var(--border);
  background:var(--bg);
}
.three-header-title{
  font-family:'JetBrains Mono',monospace;
  font-size:9px;font-weight:700;letter-spacing:.2em;text-transform:uppercase;
  color:var(--muted);
}
.three-header-right{display:flex;align-items:center;gap:8px;}
#threeCanvas{flex:1;display:block;width:100%;min-height:0;}
.three-btn{
  padding:4px 12px;border-radius:2px;
  font-family:'JetBrains Mono',monospace;
  font-size:10px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;
  border:1px solid var(--border2);
  background:none;color:var(--sub);cursor:pointer;transition:all .15s;
}
.three-btn:hover{color:var(--text);border-color:var(--border3);}
.three-btn.active{background:var(--amber);color:#000;border-color:var(--amber);}
.three-sim-bar{height:2px;flex-shrink:0;background:var(--plate3);}
.three-sim-fill{height:100%;background:var(--amber);width:0%;transition:width .05s linear;}
.three-hint{
  position:absolute;bottom:70px;left:50%;transform:translateX(-50%);
  font-family:'JetBrains Mono',monospace;
  font-size:9px;color:var(--muted);pointer-events:none;
  white-space:nowrap;letter-spacing:.1em;text-transform:uppercase;
}

/* ── STATUSBAR ───────────────────────── */
.statusbar{
  height:24px;flex-shrink:0;
  display:flex;align-items:center;gap:14px;
  padding:0 14px;
  border-top:1px solid var(--border);
  background:var(--bg);
  font-family:'JetBrains Mono',monospace;
  font-size:10px;color:var(--muted);letter-spacing:.04em;
}
.sb-dot{width:5px;height:5px;display:inline-block;margin-right:6px;clip-path:polygon(50% 0%,100% 50%,50% 100%,0% 50%);}
.sb-sep{width:1px;height:10px;background:var(--border);}

/* ── TOAST ───────────────────────────── */
.toast{
  position:fixed;bottom:34px;left:50%;
  transform:translateX(-50%) translateY(10px);
  background:var(--plate2);
  border:1px solid var(--border2);
  border-left:3px solid var(--amber);
  border-radius:0;
  padding:7px 16px;
  font-family:'JetBrains Mono',monospace;
  font-size:11px;font-weight:500;letter-spacing:.05em;
  opacity:0;transition:all .25s;z-index:999;
  white-space:nowrap;pointer-events:none;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0);}
.toast.ok{border-left-color:var(--green);color:var(--green);}
.toast.err{border-left-color:var(--red);color:var(--red);}

/* ── SCROLLBAR ───────────────────────── */
::-webkit-scrollbar{width:3px;height:3px;}
::-webkit-scrollbar-track{background:transparent;}
::-webkit-scrollbar-thumb{background:var(--plate3);border-radius:0;}

/* ── TABLET ──────────────────────────── */
.panel-toggle{display:none;}

@media (pointer:coarse){
  .tool-btn{width:42px;height:38px;}
  .entity-item{min-height:44px;}
  .op-btn{min-height:50px;}
  .apply-btn{padding:11px;}
  .btn{padding:7px 14px;}
  input[type=number],input[type=text],select{min-height:36px;}
}

@media (max-width:900px){
  .workspace{position:relative;}
  .left-panel{
    position:absolute;left:0;top:0;bottom:0;z-index:30;width:220px;
    transform:translateX(-100%);
    transition:transform .22s cubic-bezier(.4,0,.2,1);
    box-shadow:4px 0 24px rgba(0,0,0,.7);
    overflow-y:auto;
    -webkit-overflow-scrolling:touch;
  }
  .left-panel.open{transform:translateX(0);}
  .right-panel{
    position:absolute;right:0;top:0;bottom:0;z-index:30;width:280px;
    transform:translateX(100%);
    transition:transform .22s cubic-bezier(.4,0,.2,1);
    box-shadow:-4px 0 24px rgba(0,0,0,.7);
    overflow-y:auto;
    -webkit-overflow-scrolling:touch;
  }
  .right-panel.open{transform:translateX(0);}
  .canvas-area{flex:1;}
  .panel-toggle{
    display:flex;align-items:center;justify-content:center;
    position:absolute;z-index:31;width:32px;height:32px;
    background:var(--plate2);border:1px solid var(--border2);
    color:var(--sub);font-size:14px;cursor:pointer;
    top:50%;transition:all .15s;
    font-family:'JetBrains Mono',monospace;
  }
  .panel-toggle:hover{background:var(--plate3);color:var(--amber);}
  .panel-toggle-left{left:0;border-left:none;border-radius:0 4px 4px 0;}
  .panel-toggle-right{right:0;border-right:none;border-radius:4px 0 0 4px;}
  .panel-toggle-right.open-r{right:280px;}
  .panel-toggle-left.open-l{left:220px;}
  .panel-overlay{
    display:none;position:absolute;inset:0;z-index:29;
    background:rgba(0,0,0,.5);
  }
  .panel-overlay.show{display:block;}
  .logo-ver{display:none;}
  .topbar{padding:0;gap:0;}
  .topbar-center{gap:0;}
  .view-btn{padding:5px 10px;font-size:10px;}
  #opBadge{display:none!important;}
  .statusbar{gap:8px;font-size:9px;padding:0 10px;}
  #sbFile,#sbEnts{display:none;}
  .canvas-tools{bottom:8px;}
}

@media (max-width:600px){
  .topbar{
    height:44px;
    overflow-x:auto;
    -webkit-overflow-scrolling:touch;
    scrollbar-width:none;
    flex-wrap:nowrap;
  }
  .topbar::-webkit-scrollbar{display:none;}
  .topbar-center{flex-shrink:0;padding:0 8px;}
  .topbar-actions{flex-shrink:0;}
  .right-panel{width:100vw;overflow-y:auto;-webkit-overflow-scrolling:touch;}
  .left-panel{width:80vw;}
  .panel-toggle-right.open-r{right:100vw;}
  .panel-toggle-left.open-l{left:80vw;}
  .btn-ghost{display:none;}
  .view-btn{padding:4px 8px;font-size:9px;}
  /* Export tabs - bigger touch targets */
  .exp-tab{padding:12px 20px;font-size:11px;}
  /* Export panels - stack vertically on mobile */
  .exp-panels{flex-direction:column;}
  .exp-panel-left{width:100%;height:200px;flex-shrink:0;}
  .exp-panel-right{flex:1;min-height:200px;}
  /* Top stats bar wraps */
  .exp-topbar{flex-wrap:wrap;gap:8px;}
  .exp-stats{order:3;width:100%;}
}

/* ── ENTITY TREE ─────────────────────── */
.tree-group-head{
  display:flex;align-items:center;gap:6px;
  padding:7px 12px;
  border-bottom:1px solid rgba(255,255,255,.04);
  cursor:pointer;
  user-select:none;
  transition:background .1s;
  background:rgba(240,165,0,.04);
}
.tree-group-head:hover{background:rgba(240,165,0,.08);}

.tree-type-head{
  display:flex;align-items:center;gap:6px;
  padding:5px 12px 5px 20px;
  border-bottom:1px solid rgba(255,255,255,.03);
  cursor:pointer;user-select:none;
  transition:background .1s;
}
.tree-type-head:hover{background:var(--plate);}

.tree-arrow{
  font-size:9px;color:var(--muted);
  width:10px;flex-shrink:0;
  transition:transform .15s;
}
.tree-group-icon{font-size:11px;color:var(--amber);flex-shrink:0;}
.tree-type-icon{font-size:11px;color:var(--sub);flex-shrink:0;}
.tree-group-name,.tree-type-name{
  flex:1;
  font-family:'JetBrains Mono',monospace;
  font-size:10px;font-weight:600;
  letter-spacing:.08em;text-transform:uppercase;
  color:var(--sub);
}
.tree-group-name{color:var(--amber);}
.tree-group-count-old{display:none}

/* Entity items inside tree — more compact */
.tree-type-body .entity-item{
  padding:5px 12px 5px 32px;
  min-height:28px;
}
.tree-type-body .ent-detail{
  font-family:'JetBrains Mono',monospace;
  font-size:9px;color:var(--sub);
  letter-spacing:.03em;
}
.tree-type-body .entity-item:hover .ent-detail{color:var(--text);}
.tree-type-body .entity-item.sel1 .ent-detail{color:var(--amber);}
.tree-group-count{
  font-family:'JetBrains Mono',monospace;
  font-size:10px;color:var(--amber);
  background:rgba(240,165,0,.1);
  padding:1px 6px;border-radius:2px;
  min-width:22px;text-align:center;
}
.tree-type-body .entity-item.sel1{
  background:rgba(240,165,0,.08);
  border-left:2px solid var(--amber);
  padding-left:30px;
}
.tree-type-body .entity-item.selN{
  background:rgba(240,165,0,.04);
}

/* ── FIELDS GROUPS ───────────────────── */
.fields-group{
  background:var(--bg3);
  border:1px solid var(--border2);
  border-radius:2px;
  padding:10px 12px;
  margin-bottom:8px;
}
.fields-group-label{
  font-family:'JetBrains Mono',monospace;
  font-size:9px;font-weight:700;
  letter-spacing:.2em;text-transform:uppercase;
  color:var(--amber);
  margin-bottom:8px;
  display:flex;align-items:center;gap:6px;
}
.fields-group-label::after{
  content:'';flex:1;height:1px;
  background:rgba(240,165,0,.2);
}

/* Brighter field labels */
.field label{
  display:block;
  font-family:'JetBrains Mono',monospace;
  font-size:9px;color:var(--text);
  letter-spacing:.1em;text-transform:uppercase;
  margin-bottom:3px;font-weight:600;
}
.field input,.field select{
  width:100%;padding:6px 8px;
  background:var(--plate);
  border:1px solid var(--border2);
  border-radius:2px;
  color:var(--text);
  font-family:'JetBrains Mono',monospace;
  font-size:12px;outline:none;
  transition:border-color .15s,background .15s;
}
.field input:focus,.field select:focus{
  border-color:var(--amber);
  background:var(--plate2);
}
.fu-lbl{
  position:absolute;right:7px;top:50%;transform:translateY(-50%);
  font-size:9px;color:var(--amber);pointer-events:none;
  font-family:'JetBrains Mono',monospace;font-weight:600;
}

/* ── ENT OP BADGES (in tree) ─────────── */
.ent-op-badges{
  display:flex;gap:3px;flex-wrap:wrap;margin-top:3px;
}
.ent-op-badge{
  font-family:'JetBrains Mono',monospace;
  font-size:8px;font-weight:700;letter-spacing:.06em;
  padding:1px 5px;border-radius:2px;
  border:1px solid;
}
.fields-hint{
  font-family:'JetBrains Mono',monospace;
  font-size:10px;color:var(--muted);
  letter-spacing:.08em;text-align:center;
  padding:12px 0;
}

/* ── OP SUMMARY LIST — see main op-sum rules above ── */

/* ── LEFT PANEL SECTIONS ─────────────── */
.lp-section{
  border-bottom:1px solid var(--border);
  flex-shrink:0;
}
.lp-section-ops{
  border-top:2px solid var(--amber);
  border-bottom:none;
  flex:1;display:flex;flex-direction:column;
  min-height:0;
}
.lp-section-head{
  display:flex;align-items:center;gap:7px;
  padding:9px 12px;
  cursor:pointer;user-select:none;
  transition:background .12s;
}
.lp-section-head:hover{background:var(--plate);}
.lp-section-icon{font-size:12px;color:var(--amber);flex-shrink:0;}
.lp-section-title{
  flex:1;
  font-family:'JetBrains Mono',monospace;
  font-size:10px;font-weight:700;
  letter-spacing:.15em;text-transform:uppercase;
  color:var(--sub);
}
.lp-chevron{
  font-size:9px;color:var(--muted);
  transition:transform .15s;flex-shrink:0;
}
.lp-section-body{overflow-y:auto;}
.lp-section-ops .lp-section-body{flex:1;overflow-y:auto;}

/* ── FREEHAND OP BUILDER ─────────────── */
.fh-type-row{
  display:grid;grid-template-columns:1fr 1fr;
  gap:0;border-bottom:1px solid var(--border);
}
.fh-type-btn{
  padding:9px;
  font-family:'JetBrains Mono',monospace;
  font-size:10px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  border:none;cursor:pointer;
  background:var(--plate);color:var(--muted);
  display:flex;align-items:center;justify-content:center;gap:6px;
  transition:all .12s;border-right:1px solid var(--border);
}
.fh-type-btn:last-child{border-right:none;}
.fh-type-btn.active{background:var(--bg3);color:var(--text);}
.fh-type-btn:hover:not(.active){color:var(--sub);}

.fh-dir-row{display:grid;grid-template-columns:1fr 1fr;gap:4px;margin-top:3px;}
.fh-dir-btn{
  padding:5px;
  font-family:'JetBrains Mono',monospace;
  font-size:9px;font-weight:600;letter-spacing:.06em;
  border:1px solid var(--border2);
  background:var(--plate);color:var(--muted);cursor:pointer;
  transition:all .12s;border-radius:2px;
}
.fh-dir-btn.active{
  background:rgba(240,165,0,.12);
  border-color:var(--amber);color:var(--amber);
}

.fh-add-btn{
  width:calc(100% - 24px);margin:0 12px 12px;
  padding:9px;
  font-family:'JetBrains Mono',monospace;
  font-size:10px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  background:var(--amber);color:#000;border:none;cursor:pointer;
  border-radius:2px;transition:filter .12s;
}
.fh-add-btn:hover{filter:brightness(1.1);}

/* ── LEFT PANEL LAYOUT FIX ───────────── */
.left-panel{
  display:flex!important;flex-direction:column;
  overflow:hidden;
}
.left-panel .lp-section:nth-child(1) .lp-section-body{
  /* Entities section — flex shrinks naturally */
  max-height:35vh;
}

/* ── ADD OPERATION scroll fix ────────── */
/* Left panel itself must allow scroll when ADD OPERATION is open */
.left-panel{
  overflow-y:auto!important;
}
/* Each section body scrollable individually */
.lp-section-body{
  overflow-y:auto;
  -webkit-overflow-scrolling:touch; /* smooth scroll on iOS */
}
/* ADD OPERATION fields need to be scrollable */
#lpFreehand{
  overflow-y:auto;
  -webkit-overflow-scrolling:touch;
  max-height:60vh;
}

/* ── DXF file picker – mobile fix ───── */
/* Make the whole topbar-file label tappable and clearly active */
.topbar-file{
  -webkit-tap-highlight-color:rgba(240,165,0,.25);
  touch-action:manipulation;
}
/* Prevent iOS from graying out unknown file types */
.topbar-file input[type=file]{
  position:absolute;
  width:1px;height:1px;
  opacity:0;overflow:hidden;
}

.exp-err{
  color:#ff4455;padding:16px;
  font-family:'JetBrains Mono',monospace;font-size:11px;
}
/* ── LANGUAGE SWITCHER ─────────────────────── */
.lang-switcher{
  display:flex;align-items:center;gap:0;
  border:1px solid var(--border2);border-radius:2px;
  overflow:hidden;flex-shrink:0;margin:0 4px;
}
.lang-btn{
  padding:4px 8px;
  font-family:'JetBrains Mono',monospace;
  font-size:9px;font-weight:700;letter-spacing:.08em;
  background:none;color:var(--muted);
  border:none;border-right:1px solid var(--border);
  cursor:pointer;transition:all .15s;
  white-space:nowrap;
}
.lang-btn:last-child{border-right:none;}
.lang-btn:hover{color:var(--text);background:var(--plate);}
.lang-btn.active{background:var(--amber);color:#000;}

@media (max-width:600px){
  .lang-btn{padding:4px 6px;font-size:8px;}
}