:root{
    --bg:#F3F5FA; --card:#FFFFFF; --line:#E4E8F0; --ink:#1E293B; --muted:#64748B;
    --blue:#2563EB; --blue-2:#1D4ED8; --soft:#EFF4FF;
    --shadow:0 6px 24px rgba(15,23,42,.08);
    --radius:14px;
    --font-stack:'IRANSans', 'IRANSansX', 'Vazirmatn', 'Inter', system-ui, -apple-system, sans-serif;
  }

  body.dark-mode{
    --bg:#0F172A;
    --card:#1E293B;
    --line:#334155;
    --ink:#F8FAFC;
    --muted:#94A3B8;
    --blue:#3B82F6;
    --blue-2:#2563EB;
    --soft:#1E3A8A;
    --shadow:0 6px 24px rgba(0,0,0,.4);
  }

  *{box-sizing:border-box}
  html,body{height:100%}

  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:var(--font-stack);
    display:flex;
    flex-direction:column;
    overflow:hidden;
    transition:background .2s, color .2s;
  }

  header{
    display:grid;
    grid-template-columns:minmax(0,1fr) auto;
    grid-template-areas:
      "brand tools"
      "actions actions";
    align-items:center;
    gap:8px 10px;
    padding:10px 16px;
    background:var(--card);
    border-bottom:1px solid var(--line);
    z-index:5;
  }
  header > .brand{grid-area:brand;min-width:0}
  header > .header-actions{grid-area:actions;min-width:0;width:100%;}
  header > .top-right-tools{grid-area:tools;min-width:0}

  .brand{display:flex;align-items:center;gap:10px}

.header-logo{
  display:block;
  width:min(180px, 100%);
  height:40px;
  flex:0 0 auto;
  object-fit:cover;
  object-position:left top;
}

.logo{
  width:13px;height:13px;border-radius:3.5px;flex:0 0 auto;
  background:#0B1528;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 1.3px 4px rgba(11,21,40,.35);
  padding:1px;
}

  .brand h1{font-size:15px;margin:0;line-height:1.1}
  .brand p{margin:2px 0 0;font-size:11px;color:var(--muted)}

  .header-actions{
    display:flex;
    gap:6px;
    flex-wrap:wrap;
    align-items:center;
    justify-content:flex-start;
  }

  .header-icon-btn{
    width:36px;
    height:36px;
    padding:0;
    flex:0 0 36px;
    display:none;
    align-items:center;
    justify-content:center;
    border:1px solid var(--line);
    background:var(--card);
    color:var(--muted);
    border-radius:9px;
    cursor:pointer;
    transition:.15s;
    box-shadow:0 2px 8px rgba(15,23,42,.05);
  }

  .header-icon-btn:hover{
    color:var(--blue);
    border-color:#BFDBFE;
    background:var(--soft);
    transform:translateY(-1px);
  }

  .header-icon-btn svg{
    width:17px;
    height:17px;
  }

  body.panel-collapsed .header-panel-toggle{
    display:inline-flex;
  }

  @media (max-width:700px){
    .header-icon-btn{
      width:34px;
      height:34px;
      flex-basis:34px;
    }
  }

  /* --- Global graph search ----------------------------------------------- */
  .top-right-tools{
    display:flex;
    align-items:center;
    justify-content:flex-end;
    gap:6px;
    margin-left:0;
    min-width:0;
  }
  .global-search{
    position:relative;
    flex:0 1 clamp(240px, 30vw, 420px);
    width:clamp(240px, 30vw, 420px);
    min-width:200px;
    max-width:420px;
    display:flex;
    align-items:center;
    gap:6px;
    margin:0;
  }
  .global-search input{
    width:100%;
    height:38px;
    padding:0 76px 0 14px;
    border:1px solid var(--line);
    border-radius:10px;
    background:var(--bg);
    color:var(--ink);
    font:600 12px var(--font-stack);
    outline:none;
    transition:.15s;
  }
  .global-search input:focus{
    border-color:var(--blue);
    background:var(--card);
    box-shadow:0 0 0 3px rgba(37,99,235,.12);
  }
  .global-search-btn{
    position:absolute;
    right:5px;
    top:5px;
    width:28px;
    height:28px;
    border:0;
    border-radius:7px;
    background:var(--blue);
    color:#fff;
    display:flex;
    align-items:center;
    justify-content:center;
    cursor:pointer;
    transition:.15s;
  }
  .global-search-btn:hover{background:var(--blue-2)}
  .global-search-btn svg{width:15px;height:15px}
  .global-search-clear{
    position:absolute;
    right:39px;
    top:5px;
    width:28px;
    height:28px;
    border:0;
    border-radius:7px;
    background:transparent;
    color:var(--muted);
    display:none;
    align-items:center;
    justify-content:center;
    cursor:pointer;
    transition:.15s;
  }
  .global-search-clear:hover{
    background:var(--soft);
    color:var(--blue);
  }
  .global-search-clear svg{width:14px;height:14px}
  .global-search.has-query .global-search-clear{display:flex}
  .global-search-results{
    position:absolute;
    left:0;
    right:0;
    top:calc(100% + 6px);
    z-index:4800;
    display:none;
    max-height:330px;
    overflow:auto;
    padding:5px;
    background:var(--card);
    border:1px solid var(--line);
    border-radius:11px;
    box-shadow:0 16px 40px rgba(15,23,42,.18);
  }
  .global-search-results.open{display:block}
  .global-search-result{
    width:100%;
    border:0;
    background:transparent;
    color:var(--ink);
    display:flex;
    align-items:center;
    gap:9px;
    padding:8px 9px;
    border-radius:8px;
    cursor:pointer;
    text-align:left;
    font:600 11.5px var(--font-stack);
  }
  .global-search-result:hover,
  .global-search-result.active{background:var(--soft);color:var(--blue)}
  .global-search-result .gs-main{min-width:0;flex:1}
  .global-search-result .gs-title{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .global-search-result .gs-meta{display:block;margin-top:2px;color:var(--muted);font-size:9.5px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .global-search-empty{padding:12px;text-align:center;color:var(--muted);font-size:11px}
  .search-focus .shape{
    stroke:#2563EB !important;
    stroke-width:3.3px !important;
    filter:drop-shadow(0 0 10px rgba(37,99,235,.65)) !important;
  }
  .edge-wrap.search-focus .edge{
    stroke:#2563EB !important;
    stroke-width:3.4px !important;
    filter:drop-shadow(0 0 6px rgba(37,99,235,.5)) !important;
  }
  .edge-label.search-focus rect{
    stroke:#2563EB !important;
    stroke-width:2.4px !important;
    fill:var(--soft) !important;
  }
  @media (max-width:1180px){
    .global-search{width:clamp(210px, 24vw, 330px);max-width:330px;}
  }
  @media (max-width:980px){
    .top-right-tools{justify-self:end;}
    .header-actions{justify-content:flex-start;}
  }
  @media (max-width:700px){
    header{grid-template-columns:minmax(0,1fr) auto;}
    .global-search{flex:1 1 auto;width:min(58vw,320px);min-width:0;max-width:none;}
  }

  .btn{
    display:inline-flex;
    align-items:center;
    gap:6px;
    border:1px solid var(--line);
    background:var(--card);
    color:var(--ink);
    padding:8px 12px;
    border-radius:9px;
    font:600 12.5px var(--font-stack);
    cursor:pointer;
    transition:.15s;
    white-space:nowrap;
  }

  .btn:hover{
    border-color:#C9D4E8;
    transform:translateY(-1px);
  }

  body.dark-mode .btn:hover{
    border-color:#3B82F6;
  }

  .btn.primary{
    background:var(--blue);
    border-color:var(--blue);
    color:#fff;
    box-shadow:0 4px 14px rgba(37,99,235,.25);
  }

  .btn.primary:hover{background:var(--blue-2)}
  .btn.danger{color:#DC2626}
  .btn.danger:hover{background:#FEF2F2;border-color:#FECACA}
  body.dark-mode .btn.danger:hover{background:#450A0A;border-color:#7F1D1D}
  .btn svg{width:15px;height:15px}
  #btnUndo, #btnRedo{
    width:38px;
    padding:8px 9px;
    justify-content:center;
  }
  #btnUndo svg, #btnRedo svg{width:16px;height:16px}

  .export-dropdown-wrap{
    position:relative;
    display:inline-block;
  }

  .dropdown-menu{
    display:none;
    position:absolute;
    top:calc(100% + 5px);
    right:0;
    background:var(--card);
    border:1px solid var(--line);
    border-radius:10px;
    box-shadow:0 12px 30px rgba(15,23,42,0.18);
    min-width:195px;
    padding:5px;
    z-index:120;
  }

  .dropdown-menu.open{display:block}

  .dropdown-menu .drop-item svg{flex:0 0 auto}
  .export-dropdown-wrap > .btn .drop-arrow{transition:transform .15s}

  .dropdown-menu .drop-item{
    width:100%;
    display:flex;
    align-items:center;
    gap:8px;
    border:0;
    background:transparent;
    padding:8px 10px;
    border-radius:7px;
    font:600 12px var(--font-stack);
    color:var(--ink);
    cursor:pointer;
    text-align:left;
    transition:.12s;
  }

  .dropdown-menu .drop-item:hover{
    background:var(--soft);
    color:var(--blue);
  }

  .switch-wrap{
    display:flex;
    align-items:center;
    gap:7px;
    cursor:pointer;
    user-select:none;
    padding:0 4px;
  }

  .switch-label{
    font-size:12px;
    font-weight:600;
    color:var(--ink);
  }

  .switch{
    position:relative;
    width:38px;
    height:20px;
    flex:0 0 auto;
  }

  .switch input{display:none}

  .switch i{
    position:absolute;
    inset:0;
    background:#CBD5E1;
    border-radius:99px;
    transition:.2s;
  }

  body.dark-mode .switch i{
    background:#475569;
  }

  .switch i::after{
    content:'';
    position:absolute;
    top:2px;
    left:2px;
    width:16px;
    height:16px;
    background:#fff;
    border-radius:50%;
    transition:.2s;
    box-shadow:0 1px 3px rgba(0,0,0,.25);
  }

  .switch input:checked + i{background:#7C3AED}
  .switch input:checked + i::after{left:20px}

  main{
    flex:1;
    display:flex;
    min-height:0;
    position:relative;
  }

  .panel{
    width:420px;
    flex:0 0 420px;
    min-width:260px;
    max-width:70vw;
    padding:14px;
    overflow-y:auto;
    overflow-x:hidden;
    display:flex;
    flex-direction:column;
    gap:14px;
    background:linear-gradient(180deg,#F7F9FD,#F3F5FA);
    position:relative;
    border-right:1px solid var(--line);
    transition:transform .22s cubic-bezier(0.4, 0, 0.2, 1), background .22s ease;
  }

  body.dark-mode .panel{
    background:linear-gradient(180deg,#1E293B,#0F172A);
  }

  .panel.collapsed{
    width:0 !important;
    min-width:0 !important;
    flex:0 0 0 !important;
    padding:0 !important;
    border-right:none !important;
    overflow:hidden !important;
  }

  .floating-panel-toggle{
    position:absolute;
    top:14px;
    left:14px;
    z-index:1;
    background:var(--card);
    border:1px solid var(--line);
    border-radius:9px;
    padding:6px 9px;
    display:none;
    align-items:center;
    gap:5px;
    font-size:11px;
    font-weight:700;
    color:var(--ink);
    box-shadow:0 4px 14px rgba(15,23,42,0.12);
    cursor:pointer;
    transition:.15s;
  }
  .floating-panel-toggle svg{width:14px;height:14px;}

  .floating-panel-toggle:hover{
    background:var(--soft);
    border-color:#BFDBFE;
    color:var(--blue);
  }

  body.panel-collapsed .floating-panel-toggle{display:inline-flex;}
  body.task-manager-open.panel-collapsed .floating-panel-toggle{top:92px;}

  .panel-resizer{
    width:8px;
    cursor:col-resize;
    z-index:100;
    touch-action:none;
    background:transparent;
    margin-left:-4px;
    margin-right:-4px;
    position:relative;
    flex:0 0 8px;
    height:100%;
  }

  .panel-resizer::after{
    content:'';
    position:absolute;
    top:0;
    bottom:0;
    left:3px;
    width:2px;
    background:transparent;
    transition:.15s;
  }

  .panel-resizer:hover::after,
  body.panel-resizing .panel-resizer::after{
    background:#3B82F6;
    width:3px;
  }

  body.panel-resizing{
    cursor:col-resize;
    user-select:none;
  }

  .panel-head-toggle{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding-bottom:4px;
    border-bottom:1px solid var(--line);
  }

  .panel-toggle-btn{
    border:1px solid var(--line);
    background:var(--card);
    color:var(--muted);
    border-radius:8px;
    padding:4px 8px;
    cursor:pointer;
    display:inline-flex;
    align-items:center;
    gap:4px;
    font-size:11.5px;
    font-weight:600;
    transition:.14s;
  }

  .panel-toggle-btn:hover{
    color:var(--blue);
    background:var(--soft);
    border-color:#BFDBFE;
  }

  .font-control{
    padding:9px 12px;
    gap:6px;
  }

  .panel-settings{padding:10px 12px;}
  .panel-settings-toggle{
    width:100%;
    border:0;
    background:transparent;
    color:var(--ink);
    padding:0;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:8px;
    font:700 12.5px var(--font-stack);
    cursor:pointer;
    text-align:left;
  }
  .panel-settings-toggle svg{width:15px;height:15px;flex:0 0 15px;transition:transform .16s ease;}
  .panel-settings.collapsed .panel-settings-toggle svg{transform:rotate(-90deg);}
  .panel-settings-body{display:flex;flex-direction:column;gap:4px;margin-top:8px;}
  .panel-settings.collapsed .panel-settings-body{display:none;}
  .panel-settings-body .font-control{padding:7px 0 0;}
  .panel-settings-body .font-control + .font-control{border-top:1px solid var(--line);padding-top:9px;}

.card.collapsed .panel-settings-toggle svg{transform:rotate(-90deg);}
  .card-body-collapse{margin-top:10px;}
  .card.collapsed .card-body-collapse{display:none;}

  .font-control-head{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:10px;
    font-size:12px;
  }

  #panelFontValue, #nodeScaleValue{
    color:var(--muted);
    font-variant-numeric:tabular-nums;
  }

  #panelFontSize, #nodeScaleSlider{
    width:100%;
    cursor:pointer;
  }

  .card{
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--radius);
    box-shadow:var(--shadow);
    padding:14px;
    transition:background .2s, border-color .2s;
    width:100%;
  }

  .card h2{
    font-size:12.5px;
    margin:0 0 10px;
    letter-spacing:.2px;
    display:flex;
    align-items:center;
    gap:8px;
  }

  label.flabel{
    display:block;
    font-size:11.5px;
    font-weight:600;
    color:var(--muted);
    margin:0 0 5px;
  }

  .req{color:#EF4444}

  input[type=text], input[type=number], select{
    width:100%;
    padding:8px 10px;
    border:1px solid var(--line);
    border-radius:99px;
    font:500 12.5px var(--font-stack);
    color:var(--ink);
    background:var(--card);
    outline:none;
    transition:.15s;
  }

  select{
    border-radius:9px;
    cursor:pointer;
  }

  input[type=text]:focus, input[type=number]:focus, select:focus{
    border-color:var(--blue);
    box-shadow:0 0 0 3px rgba(37,99,235,.15);
  }

  .field{margin-bottom:12px}

  .comp-field{
    position:relative;
    margin-bottom:12px;
  }

  .comp-row{display:flex;gap:6px}
  .comp-row input{flex:1}

  .pick-btn{
    flex:0 0 auto;
    width:36px;
    border:1px solid var(--line);
    background:var(--card);
    border-radius:8px;
    font-size:16px;
    line-height:1;
    color:var(--blue);
    cursor:pointer;
    transition:.15s;
    font-weight:700;
  }

  .pick-btn:hover{background:var(--soft);border-color:#BFDBFE}
  .type-block{margin-top:7px}
  .seg{display:flex;gap:6px;flex-wrap:wrap}
  .seg.locked{opacity:.55;pointer-events:none}
  .seg-opt input{display:none}

  .seg-box{
    display:inline-flex;
    align-items:center;
    gap:5px;
    padding:5px 8px;
    border:1px solid var(--line);
    border-radius:7px;
    font-size:11.5px;
    font-weight:600;
    color:var(--muted);
    cursor:pointer;
    background:var(--card);
    transition:.15s;
  }

  .seg-opt input:checked + .seg-box{
    border-color:var(--blue);
    color:var(--ink);
    background:var(--soft);
  }

  .sw{width:12px;height:12px;display:inline-block;flex:0 0 auto}
  .sw.standard{background:#DBEAFE;border:1.5px solid #60A5FA;border-radius:3px}
  .sw.super {
    background: #FFEDD5;
    border: 1.5px solid #FB923C;
    clip-path: polygon(25% 0%, 75% 0%, 100% 50%, 75% 100%, 25% 100%, 0% 50%);
  }
  .sw.target{background:#FEF9C3;border:1.5px solid #FACC15;border-radius:50%}

  .hint{display:none;margin-top:5px;font-size:10.5px;color:var(--blue);font-weight:600}

  .dropdown{
    display:none;
    position:absolute;
    top:100%;
    left:0;
    right:0;
    z-index:30;
    margin-top:4px;
    background:var(--card);
    border:1px solid var(--line);
    border-radius:9px;
    box-shadow:var(--shadow);
    max-height:180px;
    overflow-y:auto;
  }

  .dropdown.open{display:block}

  .drop-item{
    display:flex;
    align-items:center;
    gap:8px;
    width:100%;
    text-align:left;
    border:0;
    background:none;
    padding:8px 10px;
    font:500 12.5px var(--font-stack);
    color:var(--ink);
    cursor:pointer;
  }

  .drop-item:hover{background:var(--soft)}
  .drop-item .di-label{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .drop-item .di-type{font-size:9.5px;color:var(--muted);font-weight:700;text-transform:uppercase}
  .drop-empty{padding:10px;font-size:11.5px;color:var(--muted);text-align:center}

  .status-grid{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:6px;
  }

  .status-opt input{display:none}

  .so-box{
    display:flex;
    flex-direction:column;
    gap:4px;
    align-items:flex-start;
    padding:8px 9px;
    border:1px solid var(--line);
    border-radius:8px;
    cursor:pointer;
    background:var(--card);
    transition:.15s;
  }

  .status-opt input:checked + .so-box{border-color:var(--blue);background:var(--soft)}
  .so-box em{font-style:normal;font-size:11.5px;font-weight:600;color:var(--ink)}

  .form-actions{display:flex;gap:6px;margin-top:4px}
  .form-actions .btn{flex:1;justify-content:center}
  .hidden{display:none!important}

  .trim-warning{display:block;margin-top:2px;color:#EF4444;font-size:9.5px;line-height:1.3;font-weight:600}

  .custom-context-menu{
    position:fixed;
    display:none;
    z-index:6200;
    min-width:190px;
    padding:5px;
    background:var(--card);
    border:1px solid var(--line);
    border-radius:11px;
    box-shadow:0 14px 35px rgba(15,23,42,.18);
  }

  .custom-context-menu.open{display:block}
  .cm-header{padding:6px 9px 4px;font-size:10.5px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.4px}
  .cm-divider{height:1px;background:var(--line);margin:4px 0}

  .cm-item{
    width:100%;
    display:flex;
    align-items:center;
    gap:8px;
    border:0;
    background:transparent;
    padding:7px 9px;
    border-radius:7px;
    cursor:pointer;
    color:var(--ink);
    font:600 12px var(--font-stack);
    text-align:left;
    transition:.12s;
  }

  .cm-item:hover{background:var(--soft);color:var(--blue)}
  .cm-item.del:hover{background:#FEF2F2;color:#DC2626}
  body.dark-mode .cm-item.del:hover{background:#450A0A;color:#EF4444}
  .cm-item.active{background:var(--soft);color:var(--blue);font-weight:700}

  #inlineRenameBox{
    position:fixed;
    display:none;
    z-index:6000;
    transform:translate(-50%, -50%);
    background:var(--card);
    border:2px solid var(--blue);
    border-radius:8px;
    padding:4px 8px;
    box-shadow:0 6px 20px rgba(37,99,235,0.28);
  }

  #inlineRenameInput{
    border:none;
    outline:none;
    font-family:var(--font-stack);
    font-weight:600;
    font-size:13px;
    color:var(--ink);
    background:transparent;
    text-align:center;
    width:140px;
  }

.confirm-overlay{
    position:fixed;
    inset:0;
    z-index:2200;
    display:none;
    align-items:center;
    justify-content:center;
    background:rgba(15,23,42,.45);
    backdrop-filter:blur(3px);
  }

  /* پنجره AI Wizard پس‌زمینه را مات نمی‌کند تا کاربر گراف را شفاف ببیند */
  #aiWizardModal{
    backdrop-filter:none !important;
    -webkit-backdrop-filter:none !important;
    background:rgba(15,23,42,0.22) !important;
  }

  .confirm-overlay.open{display:flex}

  .confirm-card{
    width:min(440px,calc(100vw - 32px));
    background:var(--card);
    border:1px solid var(--line);
    border-radius:14px;
    box-shadow:0 24px 60px rgba(15,23,42,.22);
    padding:18px;
  }

  .confirm-card h3{margin:0 0 6px;font-size:15px;color:var(--ink)}
  .confirm-card p{margin:0;color:var(--muted);font-size:12px;line-height:1.5}
  .confirm-actions{display:flex;gap:7px;justify-content:flex-end;margin-top:16px;flex-wrap:wrap}

  /* --- About modal: refined PARS TRIZ branded card --------------------- */
  @keyframes aboutFadeUp{
    from{opacity:0;transform:translateY(10px) scale(.985)}
    to{opacity:1;transform:translateY(0) scale(1)}
  }
  @keyframes aboutGlowDrift{
    0%,100%{transform:translate3d(0,0,0) scale(1);opacity:.45}
    50%{transform:translate3d(8px,-4px,0) scale(1.05);opacity:.62}
  }
  @keyframes aboutLogoFloat{
    0%,100%{transform:translateY(0)}
    50%{transform:translateY(-2px)}
  }
  @keyframes aboutScan{
    0%{transform:translateX(-120%);opacity:0}
    18%{opacity:.7}
    70%{opacity:.35}
    100%{transform:translateX(520%);opacity:0}
  }
  @keyframes aboutDotPulse{
    0%,100%{opacity:.55;box-shadow:0 0 0 3px rgba(49,167,125,.10),0 0 10px rgba(49,167,125,.35)}
    50%{opacity:1;box-shadow:0 0 0 4px rgba(49,167,125,.14),0 0 14px rgba(49,167,125,.55)}
  }
  @keyframes aboutShimmer{
    0%{background-position:-180px 0}
    100%{background-position:260px 0}
  }

  .about-card{
    position:relative;
    width:min(600px,calc(100vw - 24px));
    max-height:92vh;
    padding:0;
    overflow:hidden;
    text-align:center;
    border-radius:20px;
    animation:aboutFadeUp .34s cubic-bezier(.2,.86,.3,1.08);
    background:var(--card);
    border:1px solid rgba(148,163,184,.18);
  }

  .about-hero{
    position:relative;
    padding:18px 22px 30px;
    overflow:hidden;
    background:
      radial-gradient(circle at 8% 18%,rgba(37,99,235,.18),transparent 27%),
      radial-gradient(circle at 91% 76%,rgba(18,128,92,.20),transparent 28%),
      linear-gradient(140deg,#0A213B 0%,#0C2A45 56%,#0A2A23 100%);
    isolation:isolate;
  }
  .about-hero::before{
    content:'';
    position:absolute;
    inset:0;
    z-index:-2;
    background:
      linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px),
      linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px);
    background-size:24px 24px;
    mask-image:linear-gradient(to bottom,rgba(0,0,0,.55),transparent 88%);
    opacity:.38;
  }
  .about-hero::after{
    content:'';
    position:absolute;
    width:190px;
    height:190px;
    left:-92px;
    top:-92px;
    z-index:-1;
    border-radius:50%;
    background:radial-gradient(circle,rgba(37,99,235,.34),transparent 68%);
    filter:blur(14px);
    animation:aboutGlowDrift 9s ease-in-out infinite;
  }
  .about-hero-orb{
    position:absolute;
    width:150px;
    height:150px;
    right:-72px;
    bottom:-75px;
    border-radius:50%;
    background:radial-gradient(circle,rgba(20,142,103,.28),transparent 67%);
    filter:blur(12px);
    animation:aboutGlowDrift 10s ease-in-out infinite reverse;
    pointer-events:none;
  }

  .about-topline{
    position:relative;
    z-index:2;
    display:flex;
    align-items:center;
    justify-content:center;
    gap:7px;
    margin-bottom:10px;
    color:#B9D0E1;
    font-size:8.5px;
    font-weight:800;
    letter-spacing:1.8px;
    text-transform:uppercase;
  }
  .about-topline::before,
  .about-topline::after{
    content:'';
    width:34px;
    height:1px;
    background:linear-gradient(90deg,transparent,rgba(185,208,225,.55));
  }
  .about-topline::after{transform:rotate(180deg)}
  .about-status-dot{
    width:6px;
    height:6px;
    border-radius:50%;
    background:#36AE82;
    animation:aboutDotPulse 2.4s ease-in-out infinite;
    flex:0 0 auto;
  }

  .about-logo-stage{
    position:relative;
    width:min(320px,76%);
    margin:0 auto 13px;
    padding:7px 10px;
    border-radius:13px;
    background:rgba(255,255,255,.965);
    border:1px solid rgba(255,255,255,.86);
    box-shadow:0 10px 22px rgba(0,0,0,.17), inset 0 0 0 1px rgba(7,44,73,.035);
    animation:aboutLogoFloat 5.4s ease-in-out infinite;
    overflow:hidden;
  }
  .about-logo-stage::before{
    content:'';
    position:absolute;
    top:0;
    bottom:0;
    left:-24%;
    width:14%;
    background:linear-gradient(90deg,transparent,rgba(255,255,255,.78),transparent);
    transform:skewX(-18deg);
    animation:aboutScan 5.6s ease-in-out infinite;
    pointer-events:none;
  }
  .about-brand-logo{
    display:block;
    width:100%;
    height:auto;
    max-height:60px;
    object-fit:contain;
    position:relative;
    z-index:1;
  }

  .about-title{
    position:relative;
    margin:1px 0 2px;
    font-size:23px;
    font-weight:850;
    letter-spacing:1.8px;
    color:#fff;
    background:linear-gradient(90deg,#FFFFFF 0%,#D8E6FF 38%,#B7E9D6 62%,#FFFFFF 92%);
    background-size:230px 100%;
    -webkit-background-clip:text;
    background-clip:text;
    -webkit-text-fill-color:transparent;
    animation:aboutShimmer 4.6s linear infinite;
  }
  .about-tagline{
    position:relative;
    margin:0;
    color:#BFD4E6;
    font-size:10.5px;
    font-weight:650;
    letter-spacing:1.25px;
    text-transform:uppercase;
  }

  .about-meta{
    display:flex;
    align-items:center;
    justify-content:center;
    flex-wrap:wrap;
    gap:6px;
    margin-top:10px;
  }
  .about-meta-pill{
    display:inline-flex;
    align-items:center;
    gap:5px;
    padding:4px 9px;
    border:1px solid rgba(255,255,255,.14);
    border-radius:999px;
    background:rgba(255,255,255,.06);
    color:#E6F0F7;
    font-size:8.5px;
    font-weight:750;
    letter-spacing:.45px;
  }
  .about-meta-pill.version{
    color:#D7F6EA;
    border-color:rgba(49,167,125,.30);
    background:rgba(49,167,125,.11);
  }

  .about-scanline{
    position:absolute;
    left:0;
    right:0;
    bottom:0;
    height:1px;
    overflow:hidden;
    background:rgba(255,255,255,.08);
  }
  .about-scanline::after{
    content:'';
    position:absolute;
    left:-20%;
    top:0;
    width:18%;
    height:100%;
    background:linear-gradient(90deg,transparent,#63C7A1,transparent);
    animation:aboutScan 4.2s linear infinite;
  }

  .about-body{
    position:relative;
    margin-top:-16px;
    padding:0 16px 16px;
  }
  .about-panel{
    background:var(--card);
    border:1px solid var(--line);
    border-radius:16px;
    box-shadow:0 12px 28px rgba(15,23,42,.13);
    padding:15px 15px 14px;
  }

  .about-author{
    font-size:12px;
    font-weight:800;
    color:var(--ink);
    margin:0 0 3px;
  }
  .about-role{
    font-size:10px;
    color:var(--muted);
    margin:0 0 13px;
    font-weight:550;
  }

  .about-section-kicker{
    display:inline-flex;
    align-items:center;
    gap:6px;
    margin-bottom:8px;
    color:var(--muted);
    font-size:8.5px;
    font-weight:850;
    letter-spacing:1.3px;
    text-transform:uppercase;
  }
  .about-section-kicker::before{
    content:'';
    width:16px;
    height:2px;
    border-radius:999px;
    background:linear-gradient(90deg,#2563EB,#15946A);
  }

  .about-features{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:6px;
    margin-bottom:12px;
  }
  .about-chip{
    min-height:40px;
    display:flex;
    align-items:center;
    gap:7px;
    padding:7px 8px;
    border-radius:10px;
    border:1px solid var(--line);
    background:linear-gradient(180deg,rgba(255,255,255,.28),rgba(255,255,255,0)),var(--bg);
    color:var(--ink);
    font-size:9.5px;
    font-weight:750;
    line-height:1.2;
    text-align:left;
    transition:transform .15s ease,border-color .15s ease,box-shadow .15s ease,background .15s ease;
  }
  .about-chip:hover{
    transform:translateY(-1px);
    border-color:rgba(37,99,235,.38);
    background:var(--soft);
    box-shadow:0 5px 12px rgba(37,99,235,.09);
  }
  .about-chip-icon{
    width:24px;
    height:24px;
    flex:0 0 24px;
    display:flex;
    align-items:center;
    justify-content:center;
    border-radius:8px;
    background:linear-gradient(135deg,rgba(37,99,235,.10),rgba(21,148,106,.11));
    font-size:12px;
  }

  .about-links{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:7px;
  }
  .about-link{
    width:100%;
    min-width:0;
    display:flex;
    align-items:center;
    gap:8px;
    padding:8px 9px;
    border-radius:10px;
    border:1px solid var(--line);
    background:var(--bg);
    color:var(--ink);
    font-size:10.5px;
    font-weight:700;
    text-decoration:none;
    transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease,background .15s ease;
  }
  .about-link:hover{
    transform:translateY(-1px);
    border-color:#89AEEB;
    background:var(--soft);
    box-shadow:0 6px 14px rgba(37,99,235,.11);
  }
  .about-link .about-link-icon{
    flex:0 0 auto;
    width:25px;
    height:25px;
    border-radius:8px;
    display:flex;
    align-items:center;
    justify-content:center;
    background:linear-gradient(135deg,rgba(37,99,235,.10),rgba(21,148,106,.11));
    color:var(--blue);
  }
  .about-link .about-link-text{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

  .about-footer{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:10px;
    margin-top:12px;
  }
  .about-footer-note{
    margin:0;
    color:var(--muted);
    font-size:9px;
    font-weight:600;
    text-align:left;
  }
  .about-footer-note strong{color:var(--ink)}
  .about-close{
    flex:0 0 auto;
    min-width:78px;
    padding:7px 13px !important;
    margin:0 !important;
    font-size:11px !important;
    font-weight:750 !important;
    border-radius:8px !important;
  }

  @media (max-width:640px){

  /* Compact commercial About layout */
  .about-card{
    width:min(430px,calc(100vw - 24px));
    max-height:88vh;
    border-radius:16px;
  }
  .about-hero{
    padding:15px 18px 22px;
  }
  .about-topline{
    margin-bottom:8px;
    font-size:7.8px;
    letter-spacing:1.4px;
  }
  .about-logo-stage{
    width:min(110px,32%);
    margin-bottom:10px;
    padding:5px 7px;
    border-radius:9px;
    animation:none;
  }
  .about-hero::before{opacity:.12;}
  .about-hero::after,.about-hero-orb{animation:none;opacity:.10;}
  .about-logo-stage::before,.about-scanline::after{animation:none;opacity:0;}
  .about-brand-logo{
    max-height:32px;
  }
  .about-title{
    font-size:21px;
    letter-spacing:1.5px;
  }
  .about-tagline{
    font-size:9px;
    letter-spacing:.9px;
  }
  .about-meta{
    margin-top:8px;
    gap:5px;
  }
  .about-meta-pill{
    font-size:7.7px;
    padding:4px 8px;
  }
  .about-body{
    margin-top:-12px;
    padding:0 11px 11px;
  }
  .about-panel{
    padding:12px;
    border-radius:13px;
  }
  .about-author{font-size:11.5px;}
  .about-role{
    font-size:9.3px;
    line-height:1.45;
  }
  .about-section-kicker{
    margin-bottom:7px;
    font-size:8px;
    letter-spacing:1.1px;
  }
  .about-features{
    grid-template-columns:1fr 1fr;
    gap:5px;
    margin-bottom:9px;
  }
  .about-chip{
    min-height:36px;
    padding:6px 7px;
    gap:6px;
    font-size:9px;
  }
  .about-chip-icon{
    width:21px;
    height:21px;
    flex-basis:21px;
    border-radius:7px;
    font-size:10px;
  }
  .about-links{gap:6px;}
  .about-link{
    padding:7px 8px;
    font-size:9.5px;
  }
  .about-link .about-link-icon{
    width:22px;
    height:22px;
    border-radius:7px;
  }
  .about-footer{
    margin-top:9px;
  }
  .about-footer-note{font-size:8.5px;}
  .about-close{
    min-width:68px;
    padding:6px 10px !important;
    font-size:10px !important;
  }

    .about-card{width:min(590px,calc(100vw - 18px));border-radius:18px}
    .about-hero{padding:16px 13px 27px}
    .about-logo-stage{width:min(300px,82%);padding:6px 8px;border-radius:11px}
    .about-brand-logo{max-height:54px}
    .about-title{font-size:21px}
    .about-tagline{font-size:9.5px;letter-spacing:1px}
    .about-body{padding:0 10px 10px}
    .about-panel{padding:13px 11px 12px}
    .about-features{grid-template-columns:1fr 1fr}
    .about-links{grid-template-columns:1fr}
  }

.table-wrap{
    resize:none;
    min-height:130px;
    max-height:80vh;
    height:220px;
    width:100% !important;
    border:1px solid var(--line);
    border-radius:8px;
    position:relative;
    display:flex;
    flex-direction:column;
    overflow:hidden;
  }

  .table-scroll{
    flex:1;
    width:100%;
    height:100%;
    overflow-y:auto;
    overflow-x:auto;
    overscroll-behavior:contain;
    padding-bottom:14px;
  }

  .table-resize-bl,
  .table-resize-br {
    position: absolute;
    bottom: 0;
    width: 16px;
    height: 16px;
    z-index: 10;
    touch-action: none;
    cursor: nwse-resize;
  }
  .table-resize-bl { left: 0; cursor: nesw-resize; }
  .table-resize-br { right: 0; cursor: nwse-resize; }

  .table-resize-bl::after {
    content:'';
    position:absolute;
    left:2px;
    bottom:2px;
    width:10px;
    height:10px;
    background: repeating-linear-gradient(-45deg, var(--muted) 0, var(--muted) 1.5px, transparent 1.5px, transparent 3.5px);
    clip-path: polygon(0 0, 0 100%, 100% 100%);
    opacity: 0.6;
  }
  .table-resize-br::after {
    content:'';
    position:absolute;
    right:2px;
    bottom:2px;
    width:10px;
    height:10px;
    background: repeating-linear-gradient(45deg, var(--muted) 0, var(--muted) 1.5px, transparent 1.5px, transparent 3.5px);
    clip-path: polygon(100% 0, 0 100%, 100% 100%);
    opacity: 0.6;
  }
  .table-resize-bl:hover::after, .table-resize-br:hover::after {
    opacity: 1;
    background: repeating-linear-gradient(45deg, var(--blue) 0, var(--blue) 1.5px, transparent 1.5px, transparent 3.5px);
  }

table{
    width:100%;
    border-collapse:collapse;
    font-size:11.5px;
  }
  #relTable{
    min-width:350px;
    width:100%;
  }
  #valueCostTable{
    min-width:330px;
    width:100%;
  }
  #relTable td:nth-child(1),
  #relTable td:nth-child(3),
  #valueCostTable td:first-child span{
    word-break:normal;
    overflow-wrap:break-word;
    line-height:1.35;
  }
  thead th{position:sticky;top:0;background:var(--card);color:var(--muted);text-align:left;padding:6px 7px;font-size:10px;text-transform:uppercase;letter-spacing:.3px;border-bottom:1px solid var(--line);z-index:2;}
  #relTable thead th:not(:last-child),
  #valueCostTable thead th:first-child {
    cursor: pointer;
    user-select: none;
    transition: color .15s ease;
  }
  #relTable thead th:not(:last-child):hover,
  #valueCostTable thead th:first-child:hover {
    color: var(--blue);
  }
  tbody td{padding:6px 7px;border-bottom:1px solid var(--line);vertical-align:middle}
  tbody tr:hover{background:var(--soft)}
  td.act{font-weight:600;color:var(--ink)}

  .node.fc-highlight .shape{
    stroke:#2563EB !important;
    stroke-width:3.2px !important;
    filter:drop-shadow(0 0 12px rgba(37,99,235,0.85)) !important;
    transition:stroke .15s, stroke-width .15s, filter .15s;
  }

  tbody tr.fc-highlight{
    background:var(--soft) !important;
    box-shadow:inset 3.5px 0 0 var(--blue);
  }
  tbody tr.fc-highlight td{
    color:var(--blue);
  }

  .edge-label.action-highlight rect {
    stroke: var(--blue) !important;
    stroke-width: 2.5px !important;
    fill: var(--soft) !important;
  }
  .edge-label.action-highlight text {
    fill: var(--blue) !important;
    font-weight: 800 !important;
  }

  tbody tr.edge-highlight{
    background: var(--soft) !important;
    box-shadow: inset 3.5px 0 0 var(--blue);
  }
  tbody tr.edge-highlight td {
    color: var(--blue);
  }

  .fc-point-group{
    cursor:pointer;
    transition:transform .15s ease;
  }
  .fc-point-group circle{
    transition:r .15s ease, filter .15s ease, stroke-width .15s ease;
  }
  .fc-point-group.fc-highlight circle{
    r:7.5px !important;
    stroke-width:2.8px !important;
    stroke:#2563EB !important;
    filter:drop-shadow(0 0 8px rgba(37,99,235,0.9)) !important;
  }
  .fc-point-group.fc-highlight text{
    fill:var(--blue) !important;
    font-weight:800 !important;
  }

  .status-badge{display:inline-block;font-size:9.5px;font-weight:700;padding:2px 7px;border-radius:99px;white-space:nowrap}
  .st-normal{background:#DBEAFE;color:#1D4ED8}
  .st-excessive{background:#C7D2FE;color:#3730A3}
  .st-insufficient{background:#E0F2FE;color:#0369A1}
  .st-harmful{background:#FEE2E2;color:#B91C1C}

  .icon-btn{border:none;background:none;cursor:pointer;font-size:11.5px;font-weight:700;padding:3px 6px;border-radius:6px;transition:.14s}
  .icon-btn.edit{color:var(--blue)}
  .icon-btn.edit:hover{background:var(--soft)}
  .icon-btn.del{color:#DC2626}
  .icon-btn.del:hover{background:#FEF2F2}
  body.dark-mode .icon-btn.del:hover{background:#450A0A}

  #emptyMsg, #emptyValueCostMsg{padding:16px;text-align:center;color:var(--muted);font-size:12px}

  .cost-input-cell input{
    width:60px;
    padding:4px 6px;
    text-align:center;
    border:1px solid var(--line);
    border-radius:6px;
    font-size:11.5px;
    background:var(--card);
    color:var(--ink);
  }

  .canvas-wrap{
    flex:1;
    position:relative;
    min-width:0;
    background:radial-gradient(#E2E8F0 1px,transparent 1px);
    background-size:22px 22px;
    background-color:#FAFBFE;
    transition:background-color .2s;
  }

  body.dark-mode .canvas-wrap{
    background:radial-gradient(#334155 1px,transparent 1px);
    background-size:22px 22px;
    background-color:#0B0F19;
  }

  #canvas{width:100%;height:100%;display:block;cursor:grab}
  #canvas:active{cursor:grabbing}

  .node{cursor:grab}
  .node:active{cursor:grabbing}
  .node.selected .shape{
    stroke:#2563EB !important;
    stroke-width:2.5px !important;
    stroke-dasharray:4 3;
  }

  .node.connect-target .shape{
    stroke:#2563EB !important;
    stroke-width:3.2px !important;
    filter:drop-shadow(0 0 8px rgba(37,99,235,0.6)) !important;
  }

  .port{
    fill:var(--card);
    stroke:#2563EB;
    stroke-width:2.2px;
    cursor:crosshair;
    opacity:0;
    transition:opacity .15s, r .15s;
  }

  .node:hover .port, .port:hover{opacity:1}
  .port:hover{fill:#2563EB;r:7.5px}

  .orphan-handle{
    fill:#F59E0B;
    stroke:#FFFFFF;
    stroke-width:2.5px;
    cursor:crosshair;
    filter:drop-shadow(0 2px 6px rgba(245,158,11,0.6));
    animation:pulseOrphan 1.8s infinite;
  }

  @keyframes pulseOrphan{
    0%,100%{r:6.5px}
    50%{r:9px}
  }

  .edge-label{cursor:grab}
  .edge-label:active{cursor:grabbing}
  .edge-wrap.selected .edge{
    stroke:#2563EB !important;
    filter:drop-shadow(0 0 4px rgba(37,99,235,0.45));
  }

  .edge-hit{cursor:grab;stroke:transparent;stroke-width:22px;fill:none}
  .edge-hit:active{cursor:grabbing}
  .waypoint-handle{fill:var(--card);stroke:#3B82F6;stroke-width:2px;cursor:move;transition:r .15s, stroke .15s}
  .waypoint-handle:hover{fill:#3B82F6;r:6.5px}
  #valueLabels{pointer-events:none}

  .legend{
    position:absolute;
    left:14px;
    bottom:14px;
    background:rgba(255,255,255,.94);
    backdrop-filter:blur(4px);
    border:1px solid var(--line);
    border-radius:12px;
    padding:11px 13px;
    box-shadow:var(--shadow);
    font-size:11px;
    display:flex;
    flex-direction:column;
    gap:6px;
    max-width:210px;
    transition:background .2s, border-color .2s;
  }

  body.dark-mode .legend{
    background:rgba(30,41,59,.94);
  }

  .lg-title-toggle{display:flex;align-items:center;justify-content:space-between;gap:8px}
  .legend-eye{width:22px;height:20px;padding:2px;display:flex;align-items:center;justify-content:center;border:0;background:transparent;color:var(--muted);border-radius:5px;cursor:pointer}
  .legend-eye:hover{background:var(--soft);color:var(--ink)}
  .legend-eye svg{width:14px;height:14px}
  #legendContent{display:flex;flex-direction:column;gap:6px}
  #legendContent.collapsed{display:none}
  .lg-title{font-weight:700;color:var(--muted);font-size:10px;text-transform:uppercase;letter-spacing:.5px;margin-top:2px}
  .lg-row{display:flex;align-items:center;gap:8px;color:var(--ink)}
  .lg-row svg{flex:0 0 auto}

  .zoom-controls{
    position:absolute;
    right:14px;
    bottom:14px;
    display:flex;
    flex-direction:column;
    gap:6px;
  }

  .zbtn{
    width:35px;
    height:35px;
    border:1px solid var(--line);
    background:var(--card);
    border-radius:9px;
    cursor:pointer;
    display:flex;
    align-items:center;
    justify-content:center;
    color:var(--ink);
    box-shadow:var(--shadow);
    transition:.15s;
    font-size:15px;
  }

  .zbtn:hover{border-color:#BFDBFE;color:var(--blue)}
  .zbtn svg{width:16px;height:16px}

  #toast{
    position:fixed;
    left:50%;
    bottom:24px;
    transform:translateX(-50%) translateY(20px);
    background:#0F172A;
    color:#fff;
    padding:9px 16px;
    border-radius:9px;
    font-size:12.5px;
    font-weight:600;
    opacity:0;
    pointer-events:none;
    transition:.24s;
    z-index:3000;
    box-shadow:0 8px 24px rgba(0,0,0,.25);
  }

  body.dark-mode #toast{
    background:#F8FAFC;
    color:#0F172A;
  }

  #toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
  #toast.err{background:#DC2626;color:#fff}

/* Modals */
  .confirm-overlay{
    position:fixed;
    inset:0;
    z-index:2200;
    display:none;
    align-items:center;
    justify-content:center;
    background:rgba(15,23,42,.5);
    backdrop-filter:blur(3px);
  }

  .confirm-overlay.open{display:flex}

.modal-lg{
    width:min(920px,calc(100vw - 32px));
    height:82vh;
    min-width:360px;
    min-height:280px;
    max-width:96vw;
    max-height:95vh;
    display:flex;
    flex-direction:column;
    padding:18px 20px;
    resize:none;
    overflow:hidden;
    position:relative;
    user-select:auto;
  }

  .modal-resize-bl,
  .modal-resize-br {
    position: absolute;
    bottom: 0;
    width: 20px;
    height: 20px;
    z-index: 100;
    touch-action: none;
  }

  .modal-resize-bl {
    left: 0;
    cursor: sw-resize;
  }

  .modal-resize-br {
    right: 0;
    cursor: se-resize;
  }

  .modal-resize-bl::after {
    content: '';
    position: absolute;
    left: 2px;
    bottom: 2px;
    width: 12px;
    height: 12px;
    background: repeating-linear-gradient(
      -45deg,
      var(--muted) 0,
      var(--muted) 1.5px,
      transparent 1.5px,
      transparent 3.5px
    );
    clip-path: polygon(0 0, 0 100%, 100% 100%);
    opacity: 0.65;
    transition: opacity .15s;
  }

  .modal-resize-br::after {
    content: '';
    position: absolute;
    right: 2px;
    bottom: 2px;
    width: 12px;
    height: 12px;
    background: repeating-linear-gradient(
      45deg,
      var(--muted) 0,
      var(--muted) 1.5px,
      transparent 1.5px,
      transparent 3.5px
    );
    clip-path: polygon(100% 0, 0 100%, 100% 100%);
    opacity: 0.65;
    transition: opacity .15s;
  }

  .modal-resize-bl:hover::after {
    opacity: 1;
    background: repeating-linear-gradient(
      -45deg,
      var(--blue) 0,
      var(--blue) 1.5px,
      transparent 1.5px,
      transparent 3.5px
    );
  }

  .modal-resize-br:hover::after {
    opacity: 1;
    background: repeating-linear-gradient(
      45deg,
      var(--blue) 0,
      var(--blue) 1.5px,
      transparent 1.5px,
      transparent 3.5px
    );
  }

.modal-lg.maximized, .ai-modal-card.maximized, .ai-carrier-modal-card.maximized {
    width: 100vw !important;
    height: 100vh !important;
    max-width: 100vw !important;
    max-height: 100vh !important;
    border-radius: 0 !important;
    top: 0 !important;
    left: 0 !important;
    margin: 0 !important;
    position: fixed !important;
    resize: none !important;
  }

  /* استایل مدرن، متناسب و استاندارد پنجره AI Wizard */
  .ai-modal-card {
    width: min(820px, calc(100vw - 32px));
    height: 82vh;
    min-width: 440px;
    min-height: 380px;
    max-width: 96vw;
    max-height: 94vh;
    display: flex;
    flex-direction: column;
    padding: 16px 20px;
    position: relative;
    border-radius: 16px;
    box-shadow: 0 20px 50px rgba(15,23,42,0.24);
  }

  /* --- AI Trimming Carrier Replacement modal ------------------------------ */
  .ai-carrier-modal-card{
    width:min(860px,calc(100vw - 32px));
    max-width:96vw;
    max-height:92vh;
    min-width:420px;
    min-height:360px;
    display:flex;
    flex-direction:column;
    padding:18px 20px;
    position:relative;
    border-radius:16px;
    box-shadow:0 20px 55px rgba(15,23,42,.26);
  }
  .ai-carrier-function-box{
    padding:10px 12px;
    background:var(--bg);
    border:1px solid var(--line);
    border-radius:10px;
    margin-bottom:10px;
  }
  .ai-carrier-function-label{
    font-size:10px;
    font-weight:800;
    color:var(--muted);
    text-transform:uppercase;
    letter-spacing:.45px;
    margin-bottom:4px;
  }
  .ai-carrier-function-title{
    font-size:14px;
    font-weight:800;
    color:var(--ink);
    line-height:1.4;
  }
  .ai-carrier-intro{
    margin:0;
    color:var(--muted);
    font-size:11.5px;
    line-height:1.55;
  }
  .ai-carrier-results{
    flex:1;
    overflow:auto;
    margin-top:10px;
    display:flex;
    flex-direction:column;
    gap:8px;
    padding-right:2px;
  }
  .ai-carrier-result{
    border:1px solid var(--line);
    background:var(--card);
    border-radius:12px;
    padding:11px 12px;
    box-shadow:0 5px 16px rgba(15,23,42,.06);
  }
  .ai-carrier-result.top{
    border-color:#BFDBFE;
    box-shadow:0 8px 22px rgba(37,99,235,.11);
  }
  .ai-carrier-result-head{
    display:flex;
    align-items:flex-start;
    justify-content:space-between;
    gap:10px;
  }
  .ai-carrier-result-name{
    font-size:13px;
    font-weight:800;
    color:var(--ink);
  }
  .ai-carrier-result-meta{
    margin-top:2px;
    font-size:9.5px;
    font-weight:700;
    color:var(--muted);
  }
  .ai-carrier-confidence{
    flex:0 0 auto;
    padding:3px 7px;
    border-radius:999px;
    background:var(--soft);
    color:var(--blue);
    font-size:9.5px;
    font-weight:800;
  }
  .ai-carrier-result-section{
    margin-top:8px;
  }
  .ai-carrier-result-section b{
    font-size:10px;
    color:var(--ink);
  }
  .ai-carrier-result-section p{
    margin:3px 0 0;
    font-size:11px;
    line-height:1.5;
    color:var(--muted);
  }
  #aiCarrierReplacementModal{
    background:transparent !important;
    backdrop-filter:none !important;
    -webkit-backdrop-filter:none !important;
  }
  #aiCarrierReplacementModal .ai-carrier-modal-card{
    overflow:hidden;
  }
  .ai-carrier-result-actions{
    display:flex;
    justify-content:flex-end;
    gap:7px;
    margin-top:10px;
    padding-top:9px;
    border-top:1px solid var(--line);
  }
  .ai-carrier-result-actions .btn{
    padding:5px 10px;
    font-size:10.5px;
  }
  .ai-carrier-result-actions .btn.undo{
    color:#DC2626;
    border-color:#FECACA;
  }
  .ai-carrier-result-actions .btn.undo:hover{
    background:#FEF2F2;
  }
  body.dark-mode .ai-carrier-result-actions .btn.undo:hover{
    background:#450A0A;
  }

.ai-carrier-empty{
    padding:22px 12px;
    text-align:center;
    color:var(--muted);
    font-size:11.5px;
  }
  @media (max-width:720px){
    .ai-carrier-modal-card{width:calc(100vw - 14px);min-width:0;max-height:92vh;padding:14px;}
  }

  .ai-modal-body {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding-right: 4px;
  }

  .ai-api-panel {
    background: var(--bg);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 12px 14px;
  }

  .ai-api-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .ai-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .ai-grid .full {
    grid-column: 1 / -1;
  }

  .ai-grid textarea {
    width: 100%;
    min-height: 58px;
    resize: vertical;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 8px 10px;
    font: 500 12px/1.4 var(--font-stack);
    background: var(--card);
    color: var(--ink);
    outline: none;
  }

  .ai-grid textarea:focus {
    border-color: var(--blue);
    box-shadow: 0 0 0 3px rgba(37,99,235,.12);
  }

  .ai-token-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 10px;
    background: var(--soft);
    border: 1px solid #BFDBFE;
    color: var(--blue);
    border-radius: 8px;
    font-size: 11px;
    font-weight: 700;
  }

  .ai-detected-provider {
    font-size: 11px;
    font-weight: 600;
    color: var(--blue);
    margin-top: 3px;
  }

  /* هندل‌های تغییر سایز ۴ گوشه پنجره */
  .modal-resize-tl, .modal-resize-tr, .modal-resize-bl, .modal-resize-br {
    position: absolute;
    width: 16px;
    height: 16px;
    z-index: 100;
    touch-action: none;
  }
  .modal-resize-tl { top: 0; left: 0; cursor: nwse-resize; }
  .modal-resize-tr { top: 0; right: 0; cursor: nesw-resize; }
  .modal-resize-bl { bottom: 0; left: 0; cursor: nesw-resize; }
  .modal-resize-br { bottom: 0; right: 0; cursor: nwse-resize; }

  .modal-resize-bl::after, .modal-resize-br::after {
    content:'';
    position:absolute;
    bottom:2px;
    width:9px;
    height:9px;
    opacity:0.6;
  }
  .modal-resize-bl::after { left:2px; border-left:2px solid var(--muted); border-bottom:2px solid var(--muted); }
  .modal-resize-br::after { right:2px; border-right:2px solid var(--muted); border-bottom:2px solid var(--muted); }

  .modal-header-row{
    display:flex;
    align-items:center;
    justify-content:space-between;
    margin-bottom:12px;
    border-bottom:1px solid var(--line);
    padding-bottom:10px;
    cursor:grab;
    user-select:none;
    flex:0 0 auto;
  }

  .modal-header-row:active{
    cursor:grabbing;
  }

  .modal-font-ctrl{
    display:inline-flex;
    align-items:center;
    gap:4px;
    background:var(--bg);
    border:1px solid var(--line);
    border-radius:8px;
    padding:2px 6px;
  }

  .modal-font-btn{
    border:none;
    background:var(--card);
    color:var(--ink);
    border-radius:5px;
    padding:2px 7px;
    font-size:11px;
    font-weight:700;
    cursor:pointer;
    border:1px solid var(--line);
    transition:.12s;
  }
  .modal-font-btn:hover{
    background:var(--soft);
    color:var(--blue);
  }

  .modal-corner-resize{
    position:absolute;
    right:0;
    bottom:0;
    width:16px;
    height:16px;
    cursor:se-resize;
    pointer-events:none;
  }
  .modal-corner-resize::after{
    content:'';
    position:absolute;
    right:3px;
    bottom:3px;
    width:8px;
    height:8px;
    border-right:2px solid var(--muted);
    border-bottom:2px solid var(--muted);
    border-bottom-right-radius:2px;
  }

  .filter-pills{
    display:flex;
    gap:6px;
    margin-bottom:12px;
    flex-wrap:wrap;
  }

  .pill-btn{
    border:1px solid var(--line);
    background:var(--card);
    color:var(--ink);
    border-radius:99px;
    padding:5px 12px;
    font-size:11.5px;
    font-weight:600;
    cursor:pointer;
    display:inline-flex;
    align-items:center;
    gap:5px;
    transition:.14s;
  }

  .pill-btn.active{
    background:var(--blue);
    color:#fff;
    border-color:var(--blue);
  }

  .p-counter{
    background:rgba(0,0,0,0.08);
    border-radius:99px;
    padding:1px 6px;
    font-size:10px;
  }

  .problem-box-table{
    flex:1;
    overflow-y:auto;
    border:1px solid var(--line);
    border-radius:10px;
  }

  .ps-copy-btn{
    border:1px solid var(--line);
    background:var(--card);
    border-radius:6px;
    padding:4px 8px;
    font-size:11px;
    cursor:pointer;
    color:var(--blue);
    font-weight:600;
    transition:.14s;
  }
  .ps-copy-btn:hover{
    background:var(--soft);
  }

  .ps-solve-btn{
    background:var(--blue);
    color:#fff;
    border:1px solid var(--blue);
    border-radius:6px;
    padding:4px 10px;
    font-size:11px;
    font-weight:700;
    cursor:pointer;
    transition:.15s;
    margin-left:6px;
    display:inline-flex;
    align-items:center;
    gap:4px;
  }
  .ps-solve-btn:hover{
    background:var(--blue-2);
    border-color:var(--blue-2);
  }

  .ps-statement-cell{
    line-height:1.45;
    font-size:12px;
    font-weight:500;
    color:var(--ink);
  }

  .task-highlight-banner{
    background:var(--soft);
    border:1px solid #BFDBFE;
    border-radius:10px;
    padding:12px 14px;
    margin-bottom:12px;
  }
  body.dark-mode .task-highlight-banner{
    background:#172554;
    border-color:#1E40AF;
  }

  .task-statement-quote{
    margin:6px 0 0 0;
    font-size:12.5px;
    font-weight:600;
    color:var(--ink);
    line-height:1.5;
  }

  .cm-matrix-card{
    background:var(--bg);
    border:1px solid var(--line);
    border-radius:10px;
    padding:12px;
    margin-bottom:12px;
  }

  .principle-card{
    background:var(--card);
    border:1px solid var(--line);
    border-radius:8px;
    padding:10px 12px;
    margin-bottom:8px;
    box-shadow:0 2px 8px rgba(0,0,0,0.04);
  }

  .principle-title{
    font-weight:700;
    color:var(--blue);
    font-size:13px;
    margin-bottom:4px;
    display:flex;
    align-items:center;
    gap:6px;
  }

  .principle-desc{
    font-size:11.5px;
    color:var(--muted);
    line-height:1.45;
  }

  /* Ideas Recording Area */
  .ideas-section{
    margin-top:14px;
    border-top:1px solid var(--line);
    padding-top:12px;
    display:flex;
    flex-direction:column;
    gap:8px;
  }

  .idea-input-row{
    display:flex;
    gap:8px;
  }

  .idea-input-row input{
    flex:1;
  }

  .idea-list{
    display:flex;
    flex-direction:column;
    gap:6px;
    max-height:140px;
    overflow-y:auto;
    padding-right:2px;
  }

  .idea-item{
    background:var(--card);
    border:1px solid var(--line);
    border-radius:8px;
    padding:7px 10px;
    font-size:12px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:10px;
  }

  .idea-item span{
    flex:1;
    word-break:break-word;
    color:var(--ink);
    line-height:1.4;
  }

  .idea-del-btn{
    border:none;
    background:none;
    color:#EF4444;
    cursor:pointer;
    padding:2px 5px;
    border-radius:4px;
    font-weight:700;
    font-size:13px;
    transition:.14s;
  }
  .idea-del-btn:hover{
    background:#FEE2E2;
  }

.floating-chart-window{
    position:absolute;
    left:50%;
    top:50%;
    right:auto;
    transform:translate(-50%,-50%);
    width:min(490px, calc(100vw - 32px));
    height:min(540px, calc(100vh - 80px));
    min-width:320px;
    min-height:320px;
    max-width:calc(100vw - 24px);
    max-height:calc(100vh - 80px);
    background:var(--card);
    border:1px solid var(--line);
    border-radius:14px;
    box-shadow:0 14px 40px rgba(15,23,42,0.25);
    display:none;
    flex-direction:column;
    z-index:1200;
    user-select:none;
    overflow:hidden;
    resize:both;
    transition:background .2s, border-color .2s;
  }

  .floating-chart-window.open{
    display:flex;
  }

  .chart-resize-bl {
    position: absolute;
    left: 0;
    bottom: 0;
    width: 18px;
    height: 18px;
    cursor: sw-resize;
    z-index: 10;
    touch-action: none;
  }

.chart-resize-bl::after {
    content: '';
    position: absolute;
    left: 2px;
    bottom: 2px;
    width: 12px;
    height: 12px;
    background: repeating-linear-gradient(
      -45deg,
      var(--muted) 0,
      var(--muted) 1.5px,
      transparent 1.5px,
      transparent 3.5px
    );
    clip-path: polygon(0 0, 0 100%, 100% 100%);
    opacity: 0.65;
    transition: opacity .15s;
  }

  .chart-resize-bl:hover::after {
    opacity: 1;
    background: repeating-linear-gradient(
      -45deg,
      var(--blue) 0,
      var(--blue) 1.5px,
      transparent 1.5px,
      transparent 3.5px
    );
  }
  .chart-header{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:9px 12px;
    background:var(--soft);
    border-bottom:1px solid var(--line);
    cursor:grab;
    flex:0 0 auto;
  }

  .chart-header:active{
    cursor:grabbing;
  }

  .chart-title{
    font-size:12px;
    font-weight:700;
    color:var(--ink);
    display:flex;
    align-items:center;
    gap:6px;
  }

  .chart-close-btn{
    border:none;
    background:transparent;
    color:var(--muted);
    cursor:pointer;
    padding:3px;
    display:flex;
    align-items:center;
    justify-content:center;
    border-radius:6px;
    transition:.14s;
  }

  .chart-close-btn:hover{
    background:rgba(0,0,0,0.06);
    color:var(--ink);
  }

  .chart-body{
    padding:10px;
    display:flex;
    flex:1;
    min-height:0;
    align-items:center;
    justify-content:center;
    position:relative;
    overflow:hidden;
  }

  .chart-controls{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:12px;
    padding:8px 12px 11px;
    border-top:1px solid var(--line);
    background:var(--bg);
    flex:0 0 auto;
  }
  .chart-slider-control{
    display:flex;
    flex-direction:column;
    gap:5px;
    min-width:0;
    color:var(--muted);
    font-size:9.5px;
    font-weight:700;
  }
  .chart-slider-control span{display:flex;align-items:center;justify-content:space-between;gap:8px}
  .chart-mode-control{display:flex;flex-direction:row;align-items:center;gap:6px;min-width:0;color:var(--muted);font-size:9.5px;font-weight:700;}
  .chart-mode-control > span{white-space:nowrap;}
  .chart-mode-btn{position:relative;width:38px;height:21px;padding:0;border:1px solid var(--line);border-radius:999px;background:#CBD5E1;color:transparent;font:700 10px var(--font-stack);cursor:pointer;transition:.18s;flex:0 0 38px;}
  .chart-mode-btn::after{content:'';position:absolute;top:2px;left:2px;width:15px;height:15px;background:#fff;border-radius:50%;box-shadow:0 1px 3px rgba(0,0,0,.22);transition:.18s;}
  .chart-mode-btn.active{background:var(--blue);border-color:var(--blue);}
  .chart-mode-btn.active::after{left:19px;}
  .chart-mode-btn:hover{filter:brightness(.98);box-shadow:0 0 0 3px rgba(37,99,235,.10);}
  .chart-slider-control b{font-variant-numeric:tabular-nums;color:var(--blue)}
  .chart-slider-control input{width:100%;accent-color:var(--blue);cursor:pointer}

  .floating-chart-window.maximized{
    position:fixed !important;
    inset:0 !important;
    transform:none !important;
    left:0 !important;
    top:0 !important;
    right:auto !important;
    width:100vw !important;
    height:100vh !important;
    max-width:100vw !important;
    max-height:100vh !important;
    min-width:0 !important;
    min-height:0 !important;
    border-radius:0 !important;
    z-index:5100 !important;
    resize:none !important;
  }
  .floating-chart-window.maximized .chart-controls{
    grid-template-columns:1fr 1fr;
    padding:10px 18px 14px;
  }
  @media (max-width:700px){
    .global-search{min-width:0;margin:4px 0 0;}
    .chart-controls{grid-template-columns:1fr;gap:7px;}
  }

  #fcChartSvg{
    width:100%;
    height:100%;
    max-width:100%;
    max-height:100%;
    flex:0 1 auto;
    display:block;
  }

/* Header Full Screen / Panel controls */
  .floating-fullscreen-btn{
    position:static;
    width:36px;
    height:36px;
    padding:0;
    border:1px solid var(--line);
    background:var(--card);
    color:var(--muted);
    border-radius:9px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    cursor:pointer;
    z-index:auto;
    transition:.15s;
    box-shadow:0 2px 8px rgba(15,23,42,.05);
    flex:0 0 36px;
  }

  .floating-fullscreen-btn:hover{
    color:var(--blue);
    border-color:#BFDBFE;
    background:var(--soft);
    transform:translateY(-1px);
    box-shadow:0 8px 22px rgba(15,23,42,.12);
  }

  .floating-fullscreen-btn svg{
    width:17px;
    height:17px;
  }

  .floating-fullscreen-btn span{
    display:none;
  }

/* =========================================================
   Cost–Function Optimization Tasks
   ========================================================= */

.cost-task-summary{
  margin-bottom:9px;
  padding:8px 10px;
  border:1px solid var(--line);
  border-radius:9px;
  background:var(--bg);
  color:var(--muted);
  font-size:10.5px;
  line-height:1.45;
}

.cost-task-list{
  display:flex;
  flex-direction:column;
  gap:7px;
  max-height:300px;
  overflow-y:auto;
  padding-right:2px;
}

.cost-task-group{
  border:1px solid var(--line);
  border-radius:9px;
  overflow:hidden;
  background:var(--card);
}

.cost-task-group-title{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:7px 9px;
  font-size:10.5px;
  font-weight:800;
  color:var(--ink);
  background:var(--soft);
}

.cost-task-group-title span{
  color:var(--muted);
  font-size:9.5px;
}

.cost-task-item{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:8px;
  padding:8px 9px;
  border-top:1px solid var(--line);
}

.cost-task-item:first-child{
  border-top:none;
}

.cost-task-item-main{
  min-width:0;
  flex:1;
}

.cost-task-component{
  font-size:11.5px;
  font-weight:750;
  color:var(--ink);
  margin-bottom:2px;
}

.cost-task-question{
  font-size:10.5px;
  line-height:1.4;
  color:var(--muted);
}

.cost-task-open{
  flex:0 0 auto;
  border:1px solid var(--line);
  background:var(--card);
  color:var(--blue);
  border-radius:7px;
  padding:4px 7px;
  font-size:10px;
  font-weight:700;
  cursor:pointer;
}

.cost-task-open:hover{
  background:var(--soft);
  border-color:#BFDBFE;
}

.cost-task-none{
  padding:8px 9px;
  border:1px dashed var(--line);
  border-radius:8px;
  color:var(--muted);
  font-size:10.5px;
  line-height:1.45;
}

.cost-task-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  margin-bottom:10px;
}

.cost-task-badge{
  display:inline-flex;
  align-items:center;
  padding:3px 8px;
  border-radius:999px;
  background:var(--soft);
  color:var(--blue);
  border:1px solid #BFDBFE;
  font-size:9.5px;
  font-weight:800;
}


/* Task Manager / Cost–Function Optimization */
.task-manager-modal-card{
  width:min(980px,calc(100vw - 32px));
  height:82vh;
  min-width:520px;
  min-height:360px;
  max-width:96vw;
  max-height:95vh;
  display:flex;
  flex-direction:column;
  padding:18px 20px;
}

.task-manager-body{
  flex:1;
  min-height:0;
  overflow-y:auto;
  padding-right:4px;
}

.task-manager-summary{
  margin-bottom:12px;
  padding:9px 11px;
  border:1px solid var(--line);
  border-radius:9px;
  background:var(--bg);
  color:var(--muted);
  font-size:10.5px;
  line-height:1.45;
}

.task-manager-group{
  border:1px solid var(--line);
  border-radius:10px;
  overflow:hidden;
  background:var(--card);
  margin-bottom:9px;
}

.task-manager-group-title{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:8px 10px;
  background:var(--soft);
  font-size:11px;
  font-weight:800;
  color:var(--ink);
}

.task-manager-group-title span{color:var(--muted);font-size:9.5px}

.task-manager-item{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:10px;
  padding:9px 10px;
  border-top:1px solid var(--line);
}

.task-manager-item-main{min-width:0;flex:1}
.task-manager-component{font-size:12px;font-weight:750;color:var(--ink);margin-bottom:2px}
.task-manager-question{font-size:10.5px;line-height:1.45;color:var(--muted)}
.task-manager-open{flex:0 0 auto;border:1px solid var(--line);background:var(--card);color:var(--blue);border-radius:7px;padding:5px 8px;font-size:10.5px;font-weight:700;cursor:pointer}
.task-manager-open:hover{background:var(--soft);border-color:#BFDBFE}
.task-manager-none{padding:9px 10px;border:1px dashed var(--line);border-radius:8px;color:var(--muted);font-size:10.5px;line-height:1.45}

.cost-task-modal-card{
  width:min(860px,calc(100vw - 32px));
  height:78vh;
  max-height:92vh;
  overflow:auto;
  display:flex;
  flex-direction:column;
}
.cost-task-modal-body{flex:1;min-height:0;overflow-y:auto;padding-right:4px}

    #taskManagerMenu{width:min(310px,calc(100vw - 20px));max-width:calc(100vw - 20px);left:0;right:auto;}
  #taskManagerMenu .drop-item{white-space:normal;line-height:1.35;min-height:38px;word-break:break-word;}
  #taskManagerMenu .drop-item:disabled{opacity:.42;cursor:not-allowed;pointer-events:none;}
  .report-options-modal-card{width:min(980px,calc(100vw - 24px));height:86vh;min-width:520px;min-height:420px;max-width:96vw;max-height:95vh;display:flex;flex-direction:column;padding:18px 20px;}
  .report-options-body{flex:1;min-height:0;overflow-y:auto;padding-right:4px;}
  .report-design-field{margin-bottom:4px;padding:10px 11px;border:1px solid var(--line);border-radius:10px;background:linear-gradient(180deg,var(--card),var(--bg));}
  .report-design-hint{margin-top:4px;color:var(--muted);font-size:9.5px;line-height:1.35;}
  .report-options-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px;padding:9px 11px;background:var(--bg);border:1px solid var(--line);border-radius:9px;}
  .report-option-grid{display:grid;grid-template-columns:1fr 1fr;gap:7px;}
  #reportOptionsModal input[type="checkbox"]:disabled{opacity:.45;cursor:not-allowed;}
  .report-options-divider{height:1px;background:var(--line);margin:14px 0;}
  .report-field-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
  .report-field{margin-bottom:10px;}
  .report-field textarea{width:100%;min-height:68px;resize:vertical;padding:9px 10px;border:1px solid var(--line);border-radius:10px;font:500 12px/1.5 var(--font-stack);color:var(--ink);background:var(--card);outline:none;}
  .report-field textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(37,99,235,.15);}
@media (max-width:860px){
  .report-options-modal-card{min-width:0;width:calc(100vw - 20px);height:88vh;}
  .report-option-grid,.report-field-grid{grid-template-columns:1fr;}
}

@media (max-width:860px){
  .task-manager-modal-card{min-width:0;width:calc(100vw - 20px);height:86vh}
  .cost-task-modal-card{width:calc(100vw - 20px);height:82vh}
}

@media (max-width:860px){
    body{overflow:auto}
    main{flex-direction:column}
    .panel{width:100%;max-width:none;flex:0 0 auto;border-right:none;border-bottom:1px solid var(--line)}
    .panel-resizer{display:none}
    .canvas-wrap{height:60vh;flex:0 0 auto}
    .legend{display:none}
    .floating-chart-window{
      left:50%;
      top:50%;
      right:auto;
      transform:translate(-50%,-50%);
      width:calc(100vw - 20px);
      height:min(520px,calc(100vh - 70px));
    }
  }


/* =========================================================
   About dialog — compact, readable, dynamic product card
   ========================================================= */
#aboutModal .about-card{
  width:min(420px,calc(100vw - 28px));
  max-height:88vh;
  border-radius:22px;
  overflow:hidden;
  background:var(--card);
  border:1px solid rgba(148,163,184,.22);
  box-shadow:0 28px 70px rgba(15,23,42,.28);
}
#aboutModal .about-hero{
  position:relative;
  padding:17px 22px 21px;
  min-height:206px;
  overflow:hidden;
  background:linear-gradient(145deg,#0B2340 0%,#103B5B 57%,#0C3B32 100%);
}
#aboutModal .about-hero-grid{
  position:absolute;
  inset:0;
  opacity:.16;
  background-image:linear-gradient(rgba(255,255,255,.16) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:28px 28px;
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.65),transparent 90%);
  animation:aboutGridDriftMain 11s linear infinite;
}
#aboutModal .about-hero-glow{
  position:absolute;
  border-radius:50%;
  filter:blur(3px);
  pointer-events:none;
}
#aboutModal .about-hero-glow-a{width:160px;height:160px;right:-70px;top:-60px;background:radial-gradient(circle,rgba(82,170,230,.34),transparent 68%);animation:aboutHeroFloatMain 7s ease-in-out infinite;}
#aboutModal .about-hero-glow-b{width:140px;height:140px;left:-60px;bottom:-65px;background:radial-gradient(circle,rgba(48,187,145,.27),transparent 70%);animation:aboutHeroFloatMain 9s ease-in-out infinite reverse;}
#aboutModal .about-topline{font-size:9px;letter-spacing:1.7px;color:#C8D9E7;margin-bottom:10px;}
#aboutModal .about-status-dot{width:7px;height:7px;box-shadow:0 0 0 4px rgba(54,174,130,.12),0 0 15px rgba(54,174,130,.42);}
#aboutModal .about-logo-stage{
  position:relative;
  z-index:2;
  width:104px;
  height:42px;
  margin:0 auto 9px;
  padding:5px 8px;
  border-radius:11px;
  background:rgba(255,255,255,.98);
  border:1px solid rgba(255,255,255,.8);
  box-shadow:0 10px 22px rgba(0,0,0,.18);
  animation:aboutLogoFloatMain 5.8s ease-in-out infinite;
}
#aboutModal .about-brand-logo{width:100%;height:100%;max-height:none;object-fit:contain;}
#aboutModal .about-title{
  position:relative;
  z-index:2;
  margin:0;
  font-size:28px;
  line-height:1.05;
  letter-spacing:2px;
  color:#fff;
  background:none;
  -webkit-text-fill-color:#fff;
  animation:none;
}
#aboutModal .about-tagline{position:relative;z-index:2;margin:6px 0 0;font-size:12px;letter-spacing:.8px;color:#BED2E3;line-height:1.4;}
#aboutModal .about-meta{position:relative;z-index:2;margin-top:11px;gap:6px;}
#aboutModal .about-meta-pill{font-size:9px;padding:5px 9px;color:#EAF3F8;background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.15);}
#aboutModal .about-meta-pill.version{color:#DBF8EC;background:rgba(49,167,125,.16);border-color:rgba(49,167,125,.36);}
#aboutModal .about-scanline{height:2px;background:rgba(255,255,255,.08);}
#aboutModal .about-body{margin-top:-12px;padding:0 13px 13px;position:relative;z-index:3;}
#aboutModal .about-panel{padding:15px 15px 13px;border-radius:16px;box-shadow:0 13px 28px rgba(15,23,42,.12);}
#aboutModal .about-intro{text-align:left;margin-bottom:12px;}
#aboutModal .about-author{font-size:13px;margin:0;color:var(--ink);font-weight:800;}
#aboutModal .about-role{font-size:11.5px;line-height:1.48;margin:4px 0 0;color:var(--muted);font-weight:550;}
#aboutModal .about-features{display:grid;grid-template-columns:1fr;gap:7px;margin:0;}
#aboutModal .about-chip{
  min-height:51px;
  padding:8px 10px;
  display:flex;
  align-items:center;
  gap:10px;
  text-align:left;
  border-radius:11px;
  border:1px solid var(--line);
  background:linear-gradient(180deg,var(--card),var(--bg));
  transition:transform .16s ease,border-color .16s ease,box-shadow .16s ease;
}
#aboutModal .about-chip:hover{transform:translateY(-2px);border-color:#AFC7E8;box-shadow:0 8px 18px rgba(37,99,235,.09);}
#aboutModal .about-chip > span:last-child{display:flex;flex-direction:column;gap:2px;min-width:0;}
#aboutModal .about-chip strong{font-size:12.5px;color:var(--ink);font-weight:800;line-height:1.2;}
#aboutModal .about-chip small{font-size:10.5px;color:var(--muted);line-height:1.25;}
#aboutModal .about-chip-icon{width:29px;height:29px;flex:0 0 29px;border-radius:9px;background:linear-gradient(135deg,rgba(37,99,235,.12),rgba(21,148,106,.13));font-size:14px;}
#aboutModal .about-links{display:flex;gap:7px;margin-top:9px;}
#aboutModal .about-link{padding:8px 9px;border-radius:9px;background:var(--bg);font-size:10.5px;}
#aboutModal .about-link-icon{width:24px;height:24px;border-radius:7px;font-size:11px;}
#aboutModal .about-footer{margin-top:11px;padding-top:10px;border-top:1px solid var(--line);}
#aboutModal .about-footer-note{display:flex;flex-direction:column;gap:2px;font-size:10.5px;line-height:1.25;}
#aboutModal .about-footer-note span{color:var(--muted);font-size:9.5px;}
#aboutModal .about-close{min-width:76px;padding:8px 14px !important;font-size:11px !important;border-radius:9px !important;}
@keyframes aboutHeroFloatMain{0%,100%{transform:translate3d(0,0,0) scale(1);opacity:.72}50%{transform:translate3d(8px,-6px,0) scale(1.06);opacity:.95}}
@keyframes aboutGridDriftMain{0%{transform:translate3d(0,0,0)}50%{transform:translate3d(14px,8px,0)}100%{transform:translate3d(0,0,0)}}
@keyframes aboutLogoFloatMain{0%,100%{transform:translateY(0)}50%{transform:translateY(-2px)}}
@media (max-width:640px){
  #aboutModal .about-card{width:min(430px,calc(100vw - 18px));}
  #aboutModal .about-hero{padding:15px 17px 18px;min-height:196px;}
  #aboutModal .about-title{font-size:25px;}
  #aboutModal .about-tagline{font-size:10.5px;}
  #aboutModal .about-logo-stage{width:96px;height:38px;}
  #aboutModal .about-body{padding:0 9px 9px;}
  #aboutModal .about-panel{padding:13px;}
  #aboutModal .about-chip strong{font-size:11.5px;}
  #aboutModal .about-chip small{font-size:9.8px;}
}



/* =========================================================
   Final UI refinements — Value Analysis, PDF and About
   ========================================================= */
/* Make the Cost–Function context menu remain above the maximized chart. */
#customContextMenu{z-index:6200 !important;}

/* About — readable, dynamic, premium engineering card */
#aboutModal .about-card{
  width:min(470px,calc(100vw - 28px));
  max-height:90vh;
  border-radius:24px;
  background:linear-gradient(180deg,#FFFFFF 0%,#F7FAFC 100%);
  border:1px solid rgba(148,163,184,.24);
  box-shadow:0 30px 90px rgba(15,23,42,.34);
}
#aboutModal .about-hero{
  min-height:218px;
  padding:18px 26px 24px;
  background:
    radial-gradient(circle at 12% 12%,rgba(80,166,225,.20),transparent 24%),
    radial-gradient(circle at 88% 86%,rgba(48,187,145,.18),transparent 28%),
    linear-gradient(145deg,#09213D 0%,#123B5B 54%,#0B3D34 100%);
}
#aboutModal .about-hero::after{
  content:'';position:absolute;width:220px;height:220px;right:-112px;top:-112px;border-radius:50%;
  border:1px solid rgba(255,255,255,.10);
  box-shadow:0 0 0 20px rgba(255,255,255,.018),0 0 0 42px rgba(255,255,255,.010);
  animation:aboutOrbitFinal 12s linear infinite;pointer-events:none;
}
#aboutModal .about-hero-grid{opacity:.13;background-size:24px 24px;animation:aboutGridFinal 12s linear infinite;}
#aboutModal .about-topline{font-size:10px;letter-spacing:2px;color:#D5E2EA;margin-bottom:11px;}
#aboutModal .about-logo-stage{width:112px;height:44px;margin-bottom:10px;padding:5px 9px;border-radius:12px;box-shadow:0 11px 28px rgba(0,0,0,.22);}
#aboutModal .about-title{font-size:31px;letter-spacing:2.6px;line-height:1;font-weight:900;}
#aboutModal .about-tagline{font-size:13px;line-height:1.45;margin-top:7px;color:#D2E0EA;letter-spacing:.65px;}
#aboutModal .about-meta{margin-top:12px;gap:7px;}
#aboutModal .about-meta-pill{font-size:10px;padding:5px 10px;}
#aboutModal .about-body{margin-top:-14px;padding:0 15px 15px;}
#aboutModal .about-panel{padding:17px 17px 15px;border-radius:18px;box-shadow:0 15px 34px rgba(15,23,42,.12);}
#aboutModal .about-author{font-size:14px;line-height:1.35;}
#aboutModal .about-role{font-size:12.5px;line-height:1.55;margin-top:5px;}
#aboutModal .about-features{gap:8px;}
#aboutModal .about-chip{min-height:58px;padding:9px 11px;gap:11px;border-radius:12px;background:linear-gradient(135deg,#FFFFFF,#F4F8FB);}
#aboutModal .about-chip strong{font-size:13.5px;line-height:1.25;}
#aboutModal .about-chip small{font-size:11px;line-height:1.35;}
#aboutModal .about-chip-icon{width:32px;height:32px;flex-basis:32px;border-radius:10px;font-size:15px;}
#aboutModal .about-links{gap:8px;margin-top:11px;}
#aboutModal .about-link{min-height:50px;padding:9px 11px;border-radius:11px;font-size:12.5px;font-weight:800;background:#F2F6FA;}
#aboutModal .about-link .about-link-icon{width:29px;height:29px;border-radius:8px;font-size:12px;}
#aboutModal .about-footer{margin-top:13px;padding-top:11px;}
#aboutModal .about-footer-note{font-size:11.5px;line-height:1.35;}
#aboutModal .about-footer-note span{font-size:10.5px;}
#aboutModal .about-close{min-width:88px;padding:9px 16px !important;font-size:12px !important;border-radius:10px !important;}
@keyframes aboutOrbitFinal{0%{transform:rotate(0deg)}50%{transform:rotate(180deg)}100%{transform:rotate(360deg)}}
@keyframes aboutGridFinal{0%,100%{transform:translate3d(0,0,0)}50%{transform:translate3d(14px,8px,0)}}

@media (max-width:640px){
  #aboutModal .about-card{width:min(450px,calc(100vw - 18px));}
  #aboutModal .about-title{font-size:28px;}
  #aboutModal .about-tagline{font-size:11.5px;}
  #aboutModal .about-link{font-size:12px;}
}

/* =========================================================
   Distributor branding — TRIZ Consulting Group
   Isolated overrides to preserve the existing TIRAZIS UI.
   ========================================================= */

/* Header: TIRAZIS remains primary; distributor credit is secondary and non-clickable. */
.brand{
  min-width:0;
  display:flex;
  align-items:center;
  gap:12px;
}
.header-logo{
  width:184px;
  height:40px;
  object-fit:contain;
  object-position:left center;
  flex:0 0 auto;
}
.brand-distributor{
  display:inline-flex;
  align-items:center;
  gap:10px;
  min-width:0;
  color:inherit;
  padding:0;
  margin:1px 0 0;
  cursor:default;
  user-select:none;
}
.brand-distributor-divider{
  width:1px;
  height:24px;
  flex:0 0 1px;
  border-radius:999px;
  background:linear-gradient(180deg,rgba(148,163,184,.06),rgba(148,163,184,.65),rgba(148,163,184,.06));
}
.brand-distributor-copy{
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:1px;
  min-width:0;
  line-height:1.08;
}
.brand-distributor-copy small{
  color:var(--muted);
  font-size:8.2px;
  font-weight:700;
  letter-spacing:.34px;
  text-transform:uppercase;
}
.brand-distributor-copy strong{
  color:var(--ink);
  font-size:11.2px;
  font-weight:800;
  white-space:nowrap;
  letter-spacing:-.01em;
}

/* About: compact single-screen layout with TIRAZIS hero identity. */
#aboutModal .about-card{
  width:min(470px,calc(100vw - 28px));
  max-height:calc(100vh - 24px);
  overflow:hidden;
}
#aboutModal .about-hero{
  min-height:0;
  padding:14px 26px 21px;
}
#aboutModal .about-topline{
  margin-bottom:8px;
  font-size:9px;
}
#aboutModal .about-logo-stage{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:center;
  width:min(184px,56%);
  height:41px;
  margin:0 auto 8px;
  padding:0;
  border:0;
  border-radius:0;
  background:transparent;
  box-shadow:none;
  animation:none;
  overflow:visible;
}
#aboutModal .about-logo-stage::before{
  content:'';
  position:absolute;
  left:14%;
  right:14%;
  bottom:-2px;
  height:12px;
  border-radius:999px;
  background:radial-gradient(circle at center,rgba(56,189,248,.12),rgba(15,23,42,0));
  filter:blur(8px);
  opacity:.9;
  pointer-events:none;
}
#aboutModal .about-brand-logo{
  display:block;
  width:100%;
  height:100%;
  max-height:none;
  object-fit:contain;
  position:relative;
  z-index:1;
  filter:drop-shadow(0 1px 0 rgba(255,255,255,.16)) drop-shadow(0 7px 12px rgba(6,28,52,.16));
  animation:aboutTirazisLogoFloat 5.4s ease-in-out infinite;
}
#aboutModal .about-visually-hidden{
  position:absolute !important;
  width:1px !important;
  height:1px !important;
  padding:0 !important;
  margin:-1px !important;
  overflow:hidden !important;
  clip:rect(0,0,0,0) !important;
  white-space:nowrap !important;
  border:0 !important;
}
#aboutModal .about-tagline{
  margin-top:2px;
  font-size:11.5px;
  line-height:1.35;
  letter-spacing:.75px;
}
#aboutModal .about-meta{
  margin-top:9px;
  gap:6px;
}
#aboutModal .about-meta-pill{
  font-size:9px;
  padding:4px 9px;
}
#aboutModal .about-body{
  margin-top:-12px;
  padding:0 14px 13px;
}
#aboutModal .about-panel{
  padding:14px 16px 12px;
  border-radius:17px;
}
#aboutModal .about-intro{
  text-align:center;
}
#aboutModal .about-publisher{
  margin:0 0 5px;
  color:var(--muted);
  font-size:11.5px;
  line-height:1.4;
  font-weight:650;
  text-align:center;
}
#aboutModal .about-publisher a{
  color:var(--blue);
  font-weight:850;
  text-decoration:none;
  text-underline-offset:2px;
}
#aboutModal .about-publisher a:hover,
#aboutModal .about-publisher a:focus-visible{
  text-decoration:underline;
}
#aboutModal .about-distributor-logo{
  position:relative;
  width:164px;
  height:50px;
  margin:2px auto 7px;
  padding:4px 9px;
  display:flex;
  align-items:center;
  justify-content:center;
  overflow:hidden;
  border-radius:10px;
  background:#fff;
  border:1px solid rgba(148,163,184,.20);
  box-shadow:0 6px 15px rgba(15,23,42,.06);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease,background .22s ease;
}
#aboutModal .about-distributor-logo::after{
  content:'';
  position:absolute;
  top:-45%;
  bottom:-45%;
  left:-42%;
  width:28%;
  pointer-events:none;
  transform:skewX(-18deg);
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.92),transparent);
  opacity:0;
}
#aboutModal .about-distributor-logo img{
  position:relative;
  z-index:1;
  display:block;
  width:100%;
  height:100%;
  object-fit:contain;
  transition:transform .22s ease,filter .22s ease;
}
#aboutModal .about-distributor-logo:hover{
  transform:translateY(-2px) scale(1.018);
  border-color:rgba(43,126,183,.34);
  background:linear-gradient(145deg,#fff,#f9fcff);
  box-shadow:0 11px 24px rgba(15,23,42,.13),0 0 0 3px rgba(43,126,183,.055);
}
#aboutModal .about-distributor-logo:hover::after{
  opacity:1;
  animation:aboutDistributorSheen .72s ease-out 1;
}
#aboutModal .about-distributor-logo:hover img{
  transform:scale(1.035);
  filter:saturate(1.08) contrast(1.04) drop-shadow(0 3px 5px rgba(15,23,42,.11));
}
#aboutModal .about-author{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:7px;
  margin:0 0 3px;
  font-size:13px;
  line-height:1.35;
  text-align:center;
}
#aboutModal .about-linkedin-inline{
  width:21px;
  height:21px;
  flex:0 0 21px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:6px;
  background:#0A66C2;
  color:#fff;
  font-family:Arial,sans-serif;
  font-size:11px;
  font-weight:800;
  line-height:1;
  text-decoration:none;
  box-shadow:0 3px 8px rgba(10,102,194,.20);
  transition:transform .15s ease,box-shadow .15s ease,opacity .15s ease;
}
#aboutModal .about-linkedin-inline:hover,
#aboutModal .about-linkedin-inline:focus-visible{
  transform:translateY(-1px);
  box-shadow:0 5px 12px rgba(10,102,194,.28);
}
#aboutModal .about-role{
  margin:3px auto 10px;
  max-width:390px;
  font-size:11px;
  line-height:1.45;
  text-align:center;
}
#aboutModal .about-features{
  gap:7px;
  margin-bottom:0;
}
#aboutModal .about-chip{
  min-height:52px;
  padding:8px 9px;
  gap:8px;
  border-radius:11px;
}
#aboutModal .about-chip strong{
  font-size:12px;
  line-height:1.2;
}
#aboutModal .about-chip small{
  font-size:9.5px;
  line-height:1.25;
}
#aboutModal .about-chip-icon{
  width:28px;
  height:28px;
  flex-basis:28px;
  border-radius:9px;
  font-size:13px;
}
#aboutModal .about-links{
  display:none !important;
}
#aboutModal .about-footer{
  justify-content:center;
  margin-top:9px;
  padding-top:8px;
}
#aboutModal .about-footer-note{
  display:none;
}
#aboutModal .about-close{
  min-width:0 !important;
  width:auto !important;
  padding:7px 15px !important;
  margin:0 !important;
  justify-content:center;
  font-size:11.5px !important;
  border-radius:9px !important;
  line-height:1.1 !important;
}

@keyframes aboutTirazisLogoFloat{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-1.5px)}
}
@keyframes aboutDistributorSheen{
  0%{left:-42%;opacity:0}
  18%{opacity:.72}
  100%{left:118%;opacity:0}
}

@media (max-width:720px){
  .header-logo{width:174px;height:38px;}
  .brand-distributor{gap:8px;}
  .brand-distributor-copy strong{font-size:10px;}
  .brand-distributor-copy small{font-size:7.8px;}
}
@media (max-width:560px){
  .brand-distributor{display:none;}
  #aboutModal .about-card{width:min(450px,calc(100vw - 18px));}
  #aboutModal .about-hero{padding:12px 14px 19px;}
  #aboutModal .about-logo-stage{width:min(176px,64%);height:40px;}
  #aboutModal .about-tagline{font-size:10.5px;}
  #aboutModal .about-body{padding:0 10px 10px;}
  #aboutModal .about-panel{padding:12px 11px 10px;}
  #aboutModal .about-distributor-logo{width:150px;height:46px;}
  #aboutModal .about-author{font-size:12px;}
  #aboutModal .about-features{grid-template-columns:1fr 1fr 1fr;}
  #aboutModal .about-chip{min-height:48px;padding:7px;gap:6px;}
  #aboutModal .about-chip-icon{display:none;}
  #aboutModal .about-chip strong{font-size:10.5px;}
  #aboutModal .about-chip small{font-size:8.5px;}
}

/* Short screens: keep the entire About dialog visible with no internal scroll. */
@media (max-height:680px){
  #aboutModal .about-card{max-height:calc(100vh - 14px);}
  #aboutModal .about-hero{padding:9px 22px 16px;}
  #aboutModal .about-topline{margin-bottom:5px;font-size:8px;}
  #aboutModal .about-logo-stage{width:168px;height:37px;margin-bottom:5px;padding:0;}
  #aboutModal .about-tagline{font-size:9.8px;}
  #aboutModal .about-meta{margin-top:6px;}
  #aboutModal .about-meta-pill{font-size:8px;padding:3px 7px;}
  #aboutModal .about-body{margin-top:-10px;padding:0 10px 8px;}
  #aboutModal .about-panel{padding:9px 11px 8px;}
  #aboutModal .about-publisher{font-size:10.5px;margin-bottom:3px;}
  #aboutModal .about-distributor-logo{width:142px;height:40px;margin:0 auto 4px;padding:3px 7px;}
  #aboutModal .about-author{font-size:11.5px;margin-bottom:1px;}
  #aboutModal .about-linkedin-inline{width:19px;height:19px;flex-basis:19px;font-size:10px;}
  #aboutModal .about-role{font-size:9.5px;margin:1px auto 6px;line-height:1.3;}
  #aboutModal .about-chip{min-height:42px;padding:5px 7px;}
  #aboutModal .about-chip-icon{width:24px;height:24px;flex-basis:24px;font-size:11px;}
  #aboutModal .about-chip strong{font-size:10.5px;}
  #aboutModal .about-chip small{font-size:8.5px;}
  #aboutModal .about-footer{margin-top:6px;padding-top:5px;}
  #aboutModal .about-close{padding:6px 12px !important;font-size:10.5px !important;}
}

@media (prefers-reduced-motion:reduce){
  #aboutModal .about-logo-stage,
  #aboutModal .about-logo-stage::after,
  #aboutModal .about-brand-logo,
  #aboutModal .about-distributor-logo,
  #aboutModal .about-distributor-logo::after,
  #aboutModal .about-distributor-logo img{animation:none !important;transition:none !important;}
}

/* Branding correction: original artwork, clear light backing, regular distributor type. */
.brand-distributor{transform:translateY(4px);}
.brand-distributor-copy small,
.brand-distributor-copy strong{font-weight:400;}
#aboutModal .about-logo-stage{
  width:min(150px,45%);height:43px;padding:3.5px 6px;
  background:#fff;border:1px solid #e2e8f0;border-radius:12px;
  box-shadow:0 5px 18px rgba(0,0,0,.12);animation:none;
}
#aboutModal .about-logo-stage::before,
#aboutModal .about-logo-stage::after{display:none;}
#aboutModal .about-brand-logo{filter:none;animation:none;transform:none;}
#aboutModal .about-card{overflow-y:auto;}
@media(max-height:720px){
  #aboutModal .about-logo-stage{width:119px;height:33px;padding:2.5px 5px;}
}