:root{
    /* surfaces */
    --bg:#f4f5f7; --panel:#ffffff; --panel2:#f4f6f8; --panel3:#eef1f4;
    --line:#e3e7ec; --line2:#d7dce2;
    /* text */
    --txt:#1a2233; --txt2:#3b4658; --muted:#6b7688;
    /* brand */
    --accent:#4f46e5; --accent2:#4338ca; --accent-soft:#eef0fe;
    /* status */
    --green:#15924c; --amber:#b7791f; --red:#dc2f3a; --purple:#7c3aed; --blue:#2563eb;
    --radius:12px; --radius-sm:9px;
    --shadow-sm:0 1px 2px rgba(16,24,40,.05), 0 1px 3px rgba(16,24,40,.04);
    --shadow:0 1px 3px rgba(16,24,40,.06), 0 6px 16px -6px rgba(16,24,40,.10);
    --shadow-lg:0 12px 32px -8px rgba(16,24,40,.20), 0 4px 12px rgba(16,24,40,.08);
    --ring:0 0 0 3px rgba(79,70,229,.16);
  }
  *{box-sizing:border-box}
  html,body{height:100%}
  body{margin:0;font-family:"Inter",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--txt);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
  a{color:var(--accent);text-decoration:none}
  ::selection{background:rgba(79,70,229,.18)}

  /* ---------- Layout ---------- */
  .app{display:flex;min-height:100vh}
  .sidebar{width:248px;background:var(--panel);border-right:1px solid var(--line);padding:16px 14px;position:sticky;top:0;height:100vh;display:flex;flex-direction:column;gap:3px}
  .brand{font-size:19px;font-weight:800;letter-spacing:-.4px;padding:8px 10px 16px;color:var(--txt)}
  .brand span{color:var(--accent)}
  .navbtn{position:relative;display:flex;align-items:center;gap:11px;padding:9px 12px;border-radius:9px;cursor:pointer;color:var(--txt2);border:none;background:none;width:100%;text-align:left;font-size:13.5px;font-weight:500;transition:background .12s,color .12s}
  .navbtn:hover{background:var(--panel2);color:var(--txt)}
  .navbtn.active{background:var(--accent-soft);color:var(--accent2);font-weight:600}
  .navbtn.active::before{content:"";position:absolute;left:-14px;top:7px;bottom:7px;width:3px;border-radius:0 3px 3px 0;background:var(--accent)}
  .navbtn .ico{width:20px;text-align:center;font-size:15px;opacity:.9}
  .nav-spacer{flex:1}
  .main{flex:1;padding:26px 32px;max-width:100%;overflow-x:hidden}

  .topbar{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:24px;flex-wrap:wrap;gap:12px}
  .topbar h1{font-size:23px;font-weight:700;letter-spacing:-.5px;margin:0}
  .topbar .sub{color:var(--muted);font-size:13px;margin-top:3px}

  /* ---------- Buttons ---------- */
  .btn{background:var(--accent);color:#fff;border:1px solid transparent;padding:9px 16px;border-radius:9px;cursor:pointer;font-size:13px;font-weight:600;line-height:1.1;box-shadow:var(--shadow-sm);transition:background .12s,box-shadow .12s,transform .04s}
  .btn:hover{background:var(--accent2)}
  .btn:active{transform:translateY(.5px)}
  .btn:disabled{opacity:.5;cursor:not-allowed}
  .btn.sec{background:var(--panel);color:var(--txt2);border:1px solid var(--line2);box-shadow:var(--shadow-sm)}
  .btn.sec:hover{background:var(--panel2);color:var(--txt);border-color:var(--muted)}
  .btn.danger{background:var(--red)}
  .btn.danger:hover{background:#b91c25}
  .btn.sm{padding:6px 11px;font-size:12px;border-radius:8px}
  .btn-row{display:flex;gap:8px;flex-wrap:wrap}

  /* ---------- Cards / KPI ---------- */
  .grid{display:grid;gap:16px}
  .kpis{grid-template-columns:repeat(auto-fit,minmax(190px,1fr))}
  .card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow-sm)}
  .kpi{transition:box-shadow .15s,transform .15s,border-color .15s}
  .kpi:hover{box-shadow:var(--shadow);transform:translateY(-1px);border-color:var(--line2)}
  .kpi .label{color:var(--muted);font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.6px}
  .kpi .val{font-size:30px;font-weight:750;letter-spacing:-1px;margin-top:8px;color:var(--txt)}
  .kpi .val.green{color:var(--green)} .kpi .val.amber{color:var(--amber)} .kpi .val.red{color:var(--red)} .kpi .val.blue{color:var(--accent)}
  .kpi .foot{color:var(--muted);font-size:12px;margin-top:5px}
  .section-title{font-size:14px;font-weight:700;letter-spacing:-.2px;margin:28px 0 12px;color:var(--txt)}

  /* ---------- Tables / toolbar ---------- */
  .toolbar{display:flex;gap:10px;align-items:center;margin-bottom:14px;flex-wrap:wrap}
  .toolbar input[type=text],.toolbar select{background:var(--panel);border:1px solid var(--line2);color:var(--txt);padding:9px 12px;border-radius:9px;font-size:13px;box-shadow:var(--shadow-sm)}
  .toolbar input[type=text]{min-width:240px}
  .toolbar .spacer{flex:1}
  table{width:100%;border-collapse:separate;border-spacing:0;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm)}
  th,td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--line);font-size:13px;vertical-align:middle}
  th{color:var(--muted);font-weight:600;font-size:10.5px;text-transform:uppercase;letter-spacing:.5px;background:var(--panel2);border-bottom:1px solid var(--line)}
  tbody td{color:var(--txt2)}
  tbody td strong{color:var(--txt);font-weight:650}
  tr:last-child td{border-bottom:none}
  tbody tr{transition:background .1s}
  tbody tr:hover{background:var(--panel2)}
  .empty{padding:48px;text-align:center;color:var(--muted);font-size:13px}

  /* ---------- Badges ---------- */
  .badge{display:inline-block;padding:3px 10px;border-radius:6px;font-size:11px;font-weight:600;white-space:nowrap;line-height:1.5;border:1px solid transparent}
  .b-green{background:rgba(21,146,76,.10);color:#0f7a3d;border-color:rgba(21,146,76,.18)}
  .b-amber{background:rgba(183,121,31,.11);color:#9a6516;border-color:rgba(183,121,31,.20)}
  .b-red{background:rgba(220,47,58,.09);color:#c0212c;border-color:rgba(220,47,58,.18)}
  .b-blue{background:rgba(37,99,235,.09);color:#1d52c9;border-color:rgba(37,99,235,.18)}
  .b-gray{background:rgba(107,118,136,.10);color:#566173;border-color:rgba(107,118,136,.18)}
  .b-purple{background:rgba(124,58,237,.09);color:#6d28d9;border-color:rgba(124,58,237,.18)}

  /* ---------- Modal ---------- */
  .overlay{position:fixed;inset:0;background:rgba(17,24,39,.45);backdrop-filter:blur(2px);display:none;align-items:flex-start;justify-content:center;padding:48px 16px;z-index:50;overflow-y:auto}
  .overlay.open{display:flex}
  .modal{background:var(--panel);border:1px solid var(--line);border-radius:16px;width:100%;max-width:660px;padding:24px 26px;box-shadow:var(--shadow-lg);animation:pop .14s ease-out}
  @keyframes pop{from{opacity:0;transform:translateY(8px) scale(.985)}to{opacity:1;transform:none}}
  .modal h2{margin:0 0 4px;font-size:18px;font-weight:700;letter-spacing:-.3px}
  .modal .msub{color:var(--muted);font-size:12.5px;margin-bottom:18px}
  .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px 16px}
  .form-grid .full{grid-column:1/-1}
  label{display:block;font-size:12px;color:var(--txt2);margin-bottom:6px;font-weight:600}
  input,select,textarea{width:100%;background:var(--panel);border:1px solid var(--line2);color:var(--txt);padding:10px 12px;border-radius:9px;font-size:13px;font-family:inherit;transition:border-color .12s,box-shadow .12s}
  input::placeholder,textarea::placeholder{color:#9aa4b2}
  input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:var(--ring)}
  input[readonly]{background:var(--panel3);color:var(--muted)}
  textarea{resize:vertical;min-height:68px}
  .modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}
  .modal-actions .btn.danger{margin-right:auto}
  .parts-line{display:grid;grid-template-columns:1fr 90px 34px;gap:8px;align-items:center;margin-bottom:8px}
  .bom-line{display:grid;grid-template-columns:1fr 60px 86px 1fr 32px;gap:8px;align-items:center;margin-bottom:8px}
  @media(max-width:700px){.bom-line{grid-template-columns:1fr 1fr 32px}.bom-line .bom-inv{grid-column:1/-1}.bom-line .bom-notes{grid-column:1/3}}

  /* ---------- Misc ---------- */
  .muted{color:var(--muted)}
  .stockbar{height:7px;background:var(--panel3);border-radius:5px;overflow:hidden;margin-top:5px;min-width:90px;border:1px solid var(--line)}
  .stockbar > div{height:100%;border-radius:5px;transition:width .3s}
  .right{text-align:right}
  .nowrap{white-space:nowrap}
  .toast{position:fixed;bottom:26px;right:26px;background:#0f7a3d;color:#fff;padding:13px 20px;border-radius:11px;font-weight:600;z-index:100;opacity:0;transform:translateY(10px);transition:.25s;font-size:13px;box-shadow:var(--shadow-lg)}
  .toast.show{opacity:1;transform:translateY(0)}
  .toast.err{background:var(--red)}
  .hidden{display:none!important}

  /* ---------- Auth ---------- */
  .authgate{position:fixed;inset:0;background:radial-gradient(1200px 600px at 70% -10%, #eef0fe 0%, var(--bg) 55%);display:flex;align-items:center;justify-content:center;z-index:200;padding:20px}
  .authcard{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:34px 32px;width:100%;max-width:400px;box-shadow:var(--shadow-lg)}
  .authcard > div:first-child{font-size:22px!important}
  .authcard h2{margin:14px 0 4px;font-size:21px;font-weight:700;letter-spacing:-.4px}
  .authcard .msub{color:var(--muted);font-size:13px;margin-bottom:20px}
  .authcard label{margin-top:13px}

  /* ---------- Sidebar user box ---------- */
  .userbox{border-top:1px solid var(--line);margin-top:8px;padding:14px 10px 4px;font-size:12px}
  .userbox .u-name{font-weight:700;font-size:13px;color:var(--txt)}
  .userbox .u-role{color:var(--muted);text-transform:capitalize;margin-bottom:2px}
  .userbox .u-plant{color:var(--accent);font-size:11px;font-weight:700;margin-bottom:8px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;letter-spacing:.2px}
  .admin-only{display:none!important}
  .admin-only.show{display:flex!important}

  /* ---------- Responsive ---------- */
  @media(max-width:820px){
    .sidebar{width:64px;padding:14px 8px}
    .brand{font-size:0;padding:8px 6px 14px}
    .brand::before{content:"◆";font-size:20px;color:var(--accent)}
    .navbtn{justify-content:center;padding:10px 6px}
    .navbtn span.txt{display:none}
    .navbtn.active::before{display:none}
    .userbox .u-name,.userbox .u-role,.userbox .u-plant{display:none}
    .main{padding:20px 16px}
    .form-grid{grid-template-columns:1fr}
  }