:root{
    --bg:#eef2f6;
    --surface:#ffffff;
    --surface-2:#f6f8fb;
    --ink:#152943;
    --ink-soft:#54687f;
    --ink-faint:#8ea0b3;
    --line:#dde5ee;
    --accent:#0e8fc9;
    --accent-ink:#ffffff;
    --accent-soft:#e3f3fb;
    --navy:#16324f;
    --success:#1a9b62;
    --success-soft:#e2f6ec;
    --warning:#c07a11;
    --warning-soft:#fbf0dd;
    --danger:#c23b3b;
    --danger-soft:#fbe8e8;
    --shadow:0 1px 2px rgba(21,41,67,.06), 0 8px 24px -12px rgba(21,41,67,.18);
    --radius:12px;
  }
  @media (prefers-color-scheme: dark){
    :root:not([data-theme="light"]){
      --bg:#0f1720;
      --surface:#182430;
      --surface-2:#1e2c3a;
      --ink:#eaf0f6;
      --ink-soft:#a9b8c8;
      --ink-faint:#6d7f92;
      --line:#2b3a4a;
      --accent:#37b1e8;
      --accent-ink:#08202c;
      --accent-soft:#0f3446;
      --navy:#9fc4e0;
      --success:#3fce8f;
      --success-soft:#123626;
      --warning:#e2a63f;
      --warning-soft:#3a2c11;
      --danger:#ec6a6a;
      --danger-soft:#3a1c1c;
      --shadow:0 1px 2px rgba(0,0,0,.3), 0 8px 24px -12px rgba(0,0,0,.5);
    }
  }
  :root[data-theme="dark"]{
    --bg:#0f1720;
    --surface:#182430;
    --surface-2:#1e2c3a;
    --ink:#eaf0f6;
    --ink-soft:#a9b8c8;
    --ink-faint:#6d7f92;
    --line:#2b3a4a;
    --accent:#37b1e8;
    --accent-ink:#08202c;
    --accent-soft:#0f3446;
    --navy:#9fc4e0;
    --success:#3fce8f;
    --success-soft:#123626;
    --warning:#e2a63f;
    --warning-soft:#3a2c11;
    --danger:#ec6a6a;
    --danger-soft:#3a1c1c;
    --shadow:0 1px 2px rgba(0,0,0,.3), 0 8px 24px -12px rgba(0,0,0,.5);
  }
  *{box-sizing:border-box}
  html,body{margin:0;padding:0}
  body{
    background:var(--bg);
    color:var(--ink);
    font-family:"IBM Plex Sans", ui-sans-serif, system-ui, sans-serif;
    font-size:14px;
    line-height:1.5;
  }
  h1,h2,h3,.display{font-family:"Plus Jakarta Sans","IBM Plex Sans",sans-serif; text-wrap:balance;}
  .mono, .num{font-family:"IBM Plex Mono", ui-monospace, monospace; font-variant-numeric:tabular-nums;}
  a{color:inherit}
  button{font-family:inherit;font-size:inherit;cursor:pointer}
  input,select,textarea{font-family:inherit;font-size:inherit;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:8px 10px}
  input:focus,select:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:1px}
  table{border-collapse:collapse;width:100%}

  #shell{display:flex;min-height:100vh}
  .sidebar{
    width:230px;flex:none;background:var(--navy);color:#fff;
    display:flex;flex-direction:column;padding:20px 14px;gap:4px;
    position:sticky;top:0;height:100vh;
  }
  .brand{display:flex;align-items:center;gap:10px;padding:6px 8px 20px;border-bottom:1px solid rgba(255,255,255,.14);margin-bottom:14px}
  .brand-badge{width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,#1fb6e8,#0e6fa8);display:flex;align-items:center;justify-content:center;font-weight:800;font-family:"Plus Jakarta Sans";font-size:15px;flex:none;overflow:hidden}
  .brand-badge img{width:100%;height:100%;object-fit:cover}
  .brand-text .name{font-weight:700;font-size:13.5px;line-height:1.25}
  .brand-text .sub{font-size:10.5px;color:#9fc4e0;letter-spacing:.03em;text-transform:uppercase}
  .navitem{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:9px;color:#cfe0ee;text-decoration:none;font-weight:500;font-size:13.5px;border:none;background:none;width:100%;text-align:left}
  .navitem:hover{background:rgba(255,255,255,.08);color:#fff}
  .navitem.active{background:#0e6fa8;color:#fff}
  .navitem .ic{width:18px;text-align:center;flex:none}
  .nav-group-label{font-size:10.5px;text-transform:uppercase;letter-spacing:.06em;color:#7fa2bd;padding:16px 12px 4px}
  .sidebar-foot{margin-top:auto;padding:12px 8px 4px;font-size:11px;color:#7fa2bd;border-top:1px solid rgba(255,255,255,.12)}

  .content{flex:1;min-width:0;padding:28px 34px 60px;max-width:1180px}
  .pagehead{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px;flex-wrap:wrap}
  .pagehead h1{font-size:22px;margin:0 0 4px;font-weight:700}
  .pagehead .desc{color:var(--ink-soft);font-size:13px}

  .btn{display:inline-flex;align-items:center;gap:7px;padding:9px 16px;border-radius:9px;border:1px solid var(--line);background:var(--surface);color:var(--ink);font-weight:600;font-size:13.5px;white-space:nowrap}
  .btn:hover{border-color:var(--ink-faint)}
  .btn-primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
  .btn-primary:hover{filter:brightness(1.06)}
  .btn-ghost{background:transparent;border-color:transparent}
  .btn-ghost:hover{background:var(--surface-2);border-color:transparent}
  .btn-danger{color:var(--danger)}
  .btn-sm{padding:6px 11px;font-size:12.5px;border-radius:7px}
  .btn[disabled]{opacity:.5;cursor:not-allowed}

  .card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
  .card-pad{padding:20px 22px}

  .stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:22px}
  .stat-tile{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;box-shadow:var(--shadow)}
  .stat-tile .label{font-size:11.5px;text-transform:uppercase;letter-spacing:.04em;color:var(--ink-faint);font-weight:600;margin-bottom:8px}
  .stat-tile .value{font-size:21px;font-weight:700;font-family:"IBM Plex Mono";letter-spacing:-.01em}
  .stat-tile .sub{font-size:12px;color:var(--ink-soft);margin-top:3px}

  .badge{display:inline-flex;align-items:center;gap:5px;padding:3px 9px;border-radius:99px;font-size:11.5px;font-weight:600;white-space:nowrap}
  .badge-warning{background:var(--warning-soft);color:var(--warning)}
  .badge-success{background:var(--success-soft);color:var(--success)}
  .badge-muted{background:var(--surface-2);color:var(--ink-soft)}
  .badge-accent{background:var(--accent-soft);color:var(--accent)}
  .badge-danger{background:var(--danger-soft);color:var(--danger)}
  .dot{width:6px;height:6px;border-radius:50%;background:currentColor}

  .table-wrap{overflow-x:auto}
  table.list th{text-align:left;font-size:11.5px;text-transform:uppercase;letter-spacing:.04em;color:var(--ink-faint);font-weight:600;padding:10px 14px;border-bottom:1px solid var(--line);white-space:nowrap}
  table.list td{padding:12px 14px;border-bottom:1px solid var(--line);font-size:13.5px;vertical-align:middle}
  table.list tr:last-child td{border-bottom:none}
  table.list tr.row-link:hover{background:var(--surface-2);cursor:pointer}
  .empty-row td{text-align:center;color:var(--ink-faint);padding:40px 14px}

  .toolbar{display:flex;gap:10px;align-items:center;margin-bottom:16px;flex-wrap:wrap}
  .search-input{min-width:220px}
  .seg{display:flex;border:1px solid var(--line);border-radius:9px;overflow:hidden}
  .seg button{padding:7px 13px;background:var(--surface);border:none;font-size:12.5px;font-weight:600;color:var(--ink-soft);border-right:1px solid var(--line)}
  .seg button:last-child{border-right:none}
  .seg button.on{background:var(--accent);color:var(--accent-ink)}

  .field{display:flex;flex-direction:column;gap:5px;margin-bottom:14px}
  .field label{font-size:12.5px;font-weight:600;color:var(--ink-soft)}
  .field .hint{font-size:11.5px;color:var(--ink-faint)}
  .field-row{display:grid;gap:14px}
  .grid-2{grid-template-columns:1fr 1fr}
  .grid-3{grid-template-columns:1fr 1fr 1fr}

  .cat-block{border:1px solid var(--line);border-radius:10px;margin-bottom:14px;overflow:hidden}
  .cat-head{display:flex;align-items:center;gap:10px;background:var(--accent-soft);padding:9px 12px}
  .cat-head input{flex:1;background:transparent;border:none;font-weight:700;color:var(--navy);padding:4px 6px}
  .cat-letter{width:24px;height:24px;border-radius:6px;background:var(--navy);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:12px;flex:none}
  .item-row{display:grid;grid-template-columns:1.2fr 90px 64px 120px 110px 32px;gap:8px;padding:8px 12px;border-top:1px solid var(--line);align-items:start}
  .item-row input, .item-row textarea{width:100%;font-size:12.8px;padding:6px 8px}
  .item-row textarea{resize:vertical;min-height:32px}
  .item-total{align-self:center;font-family:"IBM Plex Mono";font-size:12.8px;text-align:right;color:var(--ink-soft)}
  .row-x{background:none;border:none;color:var(--ink-faint);font-size:15px;align-self:center;justify-self:center}
  .row-x:hover{color:var(--danger)}
  .cat-foot{display:flex;justify-content:space-between;align-items:center;padding:8px 12px;background:var(--surface-2)}
  .add-item-btn{font-size:12px;font-weight:600;color:var(--accent);background:none;border:none;padding:4px 0}
  .cat-subtotal{font-family:"IBM Plex Mono";font-weight:700;font-size:12.8px}
  .chip-row{display:flex;gap:8px;flex-wrap:wrap;margin:6px 0 16px}
  .chip{padding:6px 12px;border-radius:99px;border:1px dashed var(--line);background:var(--surface);font-size:12px;font-weight:600;color:var(--ink-soft)}
  .chip:hover{border-color:var(--accent);color:var(--accent)}

  .terms-block{border:1px solid var(--line);border-radius:10px;overflow:hidden;margin-bottom:10px}
  .term-row{display:grid;grid-template-columns:1.4fr 150px 160px 32px;gap:8px;padding:8px 12px;border-top:1px solid var(--line);align-items:center}
  .term-row:first-child{border-top:none}
  .term-row input{width:100%;font-size:12.8px;padding:6px 8px}
  .term-row-readonly{display:grid;grid-template-columns:1.4fr 150px 160px auto;gap:8px;padding:8px 12px;border-top:1px solid var(--line);align-items:center;font-size:12.8px;color:var(--ink-soft)}
  .term-row-readonly:first-child{border-top:none}
  .terms-foot{display:flex;justify-content:space-between;align-items:center;padding:9px 14px;background:var(--surface-2);font-size:12.8px}
  .terms-foot .hint.ok{color:var(--success);font-weight:600}
  .terms-foot .hint.warn{color:var(--danger);font-weight:600}

  .totals-box{margin-left:auto;width:320px;border:1px solid var(--line);border-radius:10px;overflow:hidden}
  .totals-box .trow{display:flex;justify-content:space-between;padding:9px 14px;font-size:13px;border-bottom:1px solid var(--line)}
  .totals-box .trow:last-child{border-bottom:none}
  .totals-box .trow.grand{background:var(--navy);color:#fff;font-weight:700;font-size:14.5px}
  .totals-box input{width:130px;text-align:right;padding:4px 8px;font-size:12.8px}
  .terbilang-line{font-style:italic;color:var(--ink-soft);font-size:12.5px;margin-top:8px;text-align:right}

  .form-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:20px;padding-top:16px;border-top:1px solid var(--line)}

  .banner{display:flex;gap:10px;align-items:flex-start;background:var(--warning-soft);color:var(--warning);border:1px solid transparent;border-radius:10px;padding:11px 14px;font-size:12.8px;margin-bottom:18px}
  .modal-backdrop{position:fixed;inset:0;background:rgba(10,18,28,.45);display:flex;align-items:center;justify-content:center;z-index:50;padding:20px}
  .modal{background:var(--surface);border-radius:14px;padding:22px;width:100%;max-width:420px;box-shadow:var(--shadow)}

  /* ---- Document (letterhead) preview ---- */
  .doc-toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;gap:10px;flex-wrap:wrap}
  .doc-sheet{background:#fff;color:#1a1a1a;width:100%;max-width:800px;margin:0 auto;padding:46px 50px;box-shadow:var(--shadow);border-radius:4px;font-family:"IBM Plex Sans",sans-serif}
  .doc-sheet .letterhead{margin-bottom:22px}
  .doc-sheet .letterhead img{display:block;width:100%;height:auto}
  .doc-title{text-align:center;font-weight:800;font-size:20px;color:#152943;margin:4px 0 2px}
  .doc-num{text-align:center;font-style:italic;color:#54687f;font-size:12px;margin-bottom:20px}
  .doc-meta{margin-bottom:16px;font-size:12.8px}
  .doc-meta .mrow{display:flex;gap:10px;margin-bottom:4px}
  .doc-meta .mlabel{width:110px;font-weight:600;flex:none}
  .doc-table{width:100%;border-collapse:collapse;font-size:12px;margin-bottom:4px}
  .doc-table th{background:#152943;color:#fff;padding:7px 8px;text-align:left;font-size:11px}
  .doc-table td{padding:6px 8px;border-bottom:1px solid #dde5ee}
  .doc-table tr.cat-row td{background:#bcdcef;font-weight:700}
  .doc-table tr.cat-row td.num-cell{text-align:right}
  .doc-table td.num-cell, .doc-table th.num-cell{text-align:right}
  .doc-table td.center, .doc-table th.center{text-align:center}
  .doc-sub{color:#54687f;font-size:11px}
  .doc-totals{margin-left:auto;width:280px;font-size:12.5px;margin-top:6px}
  .doc-totals .trow{display:flex;justify-content:space-between;padding:6px 10px}
  .doc-totals .trow.grand{background:#0e8fc9;color:#fff;font-weight:700}
  .doc-jumlah-line{font-weight:700;margin-top:16px}
  .doc-terbilang{font-style:italic;color:#3a4d63;margin-bottom:14px}
  .doc-kv-table{width:100%;border-collapse:collapse;margin-bottom:18px;font-size:12.8px}
  .doc-kv-table td{border:1px solid #999;padding:9px 12px;vertical-align:top}
  .doc-kv-table td.k{font-weight:700;width:150px;background:#f3f6f9}
  .doc-amount-box{display:flex;justify-content:space-between;background:#152943;color:#fff;font-weight:700;padding:10px 16px;border-radius:5px;margin-bottom:26px;font-size:14px}
  .sign-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:30px;font-size:12.5px;text-align:center}
  .sign-grid .sig-top{min-height:64px;display:flex;flex-direction:column;justify-content:flex-end}
  .sign-grid .sig-space{height:56px}
  .doc-note{font-size:11px;color:#8a3b3b;font-style:italic;margin-bottom:10px}

  @media print{
    body{background:#fff;padding:0}
    .doc-sheet{box-shadow:none;border-radius:0;margin:0;max-width:100%;padding:0}
    @page{size:A4;margin:14mm 16mm}
  }

  @media (max-width:880px){
    .stat-row{grid-template-columns:1fr 1fr}
    .sidebar{width:76px;padding:16px 8px}
    .brand-text,.nav-group-label,.sidebar-foot,.navitem span.label{display:none}
    .navitem{justify-content:center}
    .content{padding:20px 14px 50px}
    .item-row{grid-template-columns:1fr;gap:4px;padding:10px 10px}
    .term-row, .term-row-readonly{grid-template-columns:1fr;gap:4px;padding:10px 10px}
    .totals-box{width:100%}
  }

/* ---- Login page ---- */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg);padding:20px}
.login-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);width:100%;max-width:380px;padding:32px 30px}
.login-logo{display:flex;align-items:center;gap:12px;margin-bottom:24px}
.login-logo img{height:44px;max-width:160px;object-fit:contain}
.login-badge{width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,#1fb6e8,#0e6fa8);display:flex;align-items:center;justify-content:center;font-weight:800;font-family:"Plus Jakarta Sans";font-size:16px;color:#fff;flex:none}
.login-card h1{font-size:19px;margin:0 0 4px}
.login-card .desc{margin-bottom:22px}
.login-error{background:var(--danger-soft);color:var(--danger);border-radius:9px;padding:10px 13px;font-size:12.8px;margin-bottom:16px}
.login-hint{margin-top:18px;font-size:11.5px;color:var(--ink-faint);text-align:center}
.user-menu{margin-top:auto;padding-top:12px;border-top:1px solid rgba(255,255,255,.12)}
.user-menu .who{font-size:12px;color:#cfe0ee;padding:8px 8px 2px}
.user-menu .role{font-size:10.5px;color:#7fa2bd;text-transform:uppercase;letter-spacing:.04em;padding:0 8px 8px}
.user-menu a.navitem{display:flex}