:root{
    --bg:#0f172a; --panel:#111c34; --panel2:#16223f; --line:#243352;
    --text:#e8edf7; --muted:#8ea2c4; --accent:#3b82f6; --accent2:#22d3ee;
    --green:#22c55e; --amber:#f59e0b; --red:#ef4444; --violet:#a78bfa; --slate:#64748b;
    --radius:14px; --shadow:0 6px 24px rgba(0,0,0,.28);
  }
  *{box-sizing:border-box}
  html,body{margin:0;height:100%}
  body{font-family:'Inter','Segoe UI',system-ui,'Noto Sans Thai',sans-serif;background:var(--bg);color:var(--text);font-size:14px}
  a{color:var(--accent2);text-decoration:none}
  .app{display:grid;grid-template-columns:248px 1fr;height:100vh}

  /* sidebar */
  .side{background:linear-gradient(180deg,#0c1730,#0f1d3a);border-right:1px solid var(--line);display:flex;flex-direction:column;overflow:hidden}
  .brand{padding:18px 18px 12px;border-bottom:1px solid var(--line)}
  .brand h1{font-size:15px;margin:0;letter-spacing:.3px}
  .brand small{color:var(--muted);font-size:11px}
  .nav{flex:1;overflow:auto;padding:10px 8px}
  .nav .grp{color:var(--muted);font-size:10px;text-transform:uppercase;letter-spacing:.8px;margin:14px 12px 6px}
  .nav button{display:flex;align-items:center;gap:10px;width:100%;border:0;background:transparent;color:var(--text);
    padding:9px 12px;border-radius:10px;cursor:pointer;font-size:13px;text-align:left}
  .nav button:hover{background:var(--panel2)}
  .nav button.active{background:var(--accent);color:#fff;font-weight:600}
  .nav .ico{width:18px;text-align:center;opacity:.9}
  .userbox{padding:12px 16px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}
  .userbox b{color:var(--text)}

  /* main */
  .main{overflow:auto;padding:22px 26px}
  .topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
  .topbar h2{margin:0;font-size:20px}
  .topbar .sub{color:var(--muted);font-size:12px;margin-top:2px}
  .btn{border:1px solid var(--line);background:var(--panel2);color:var(--text);padding:8px 14px;border-radius:10px;cursor:pointer;font-size:13px}
  .btn:hover{border-color:var(--accent)}
  .btn.primary{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}
  .btn.ghost{background:transparent}
  .btn.sm{padding:5px 10px;font-size:12px}
  .row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}

  /* KPI cards */
  .kpis{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:14px;margin-bottom:20px}
  .kpi{background:linear-gradient(160deg,var(--panel),var(--panel2));border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)}
  .kpi .lbl{color:var(--muted);font-size:11.5px;text-transform:uppercase;letter-spacing:.5px}
  .kpi .val{font-size:22px;font-weight:700;margin-top:8px}
  .kpi .val.sm{font-size:18px}
  .kpi.big{grid-column:span 2}
  .kpi.green .val{color:var(--green)} .kpi.red .val{color:var(--red)}
  .kpi.amber .val{color:var(--amber)} .kpi.violet .val{color:var(--violet)}
  .kpi.accent{background:linear-gradient(160deg,#16335f,#1d2b54)}

  /* panels + tables */
  .panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin-bottom:18px;box-shadow:var(--shadow)}
  .panel h3{margin:0 0 12px;font-size:14px;color:var(--text)}
  .filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:14px}
  input,select{background:#0c1730;border:1px solid var(--line);color:var(--text);padding:8px 10px;border-radius:9px;font-size:13px;outline:none}
  input:focus,select:focus{border-color:var(--accent)}
  label.fld{display:flex;flex-direction:column;gap:5px;font-size:11.5px;color:var(--muted)}
  table{width:100%;border-collapse:collapse;font-size:12.5px}
  thead th{position:sticky;top:0;background:var(--panel2);color:var(--muted);text-align:left;padding:9px 10px;border-bottom:1px solid var(--line);font-weight:600;white-space:nowrap}
  tbody td{padding:9px 10px;border-bottom:1px solid #1a2742;white-space:nowrap}
  tbody tr:hover{background:#13203c}
  td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}
  .tablewrap{max-height:62vh;overflow:auto;border-radius:10px}
  .clickable{cursor:pointer}

  /* status badges */
  .badge{display:inline-block;padding:2px 9px;border-radius:999px;font-size:11px;font-weight:600;border:1px solid transparent}
  .b-active,.b-confirmed,.b-open,.b-financing{background:rgba(34,197,94,.15);color:#4ade80;border-color:rgba(34,197,94,.3)}
  .b-pending,.b-draft,.b-current{background:rgba(245,158,11,.15);color:#fbbf24;border-color:rgba(245,158,11,.3)}
  .b-paid,.b-closed{background:rgba(100,116,139,.2);color:#cbd5e1;border-color:rgba(100,116,139,.35)}
  .b-partial{background:rgba(59,130,246,.16);color:#60a5fa;border-color:rgba(59,130,246,.32)}
  .b-overdue,.b-cancelled,.b-inactive{background:rgba(239,68,68,.16);color:#f87171;border-color:rgba(239,68,68,.32)}
  .b-renewed,.b-sold{background:rgba(167,139,250,.16);color:#c4b5fd;border-color:rgba(167,139,250,.32)}
  .b-repair{background:rgba(245,158,11,.15);color:#fbbf24}

  .alertbar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:14px}
  .alert{padding:8px 12px;border-radius:10px;font-size:12.5px;font-weight:600}
  .alert.l80{background:rgba(245,158,11,.16);color:#fbbf24;border:1px solid rgba(245,158,11,.3)}
  .alert.l90{background:rgba(239,68,68,.14);color:#fb923c;border:1px solid rgba(239,68,68,.3)}
  .alert.l100{background:rgba(239,68,68,.22);color:#f87171;border:1px solid rgba(239,68,68,.45)}

  /* modal */
  .overlay{position:fixed;inset:0;background:rgba(3,8,20,.7);display:none;align-items:center;justify-content:center;z-index:50;padding:20px}
  .overlay.show{display:flex}
  .modal{background:var(--panel);border:1px solid var(--line);border-radius:16px;width:680px;max-width:100%;max-height:88vh;overflow:auto;box-shadow:var(--shadow)}
  .modal .mh{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid var(--line)}
  .modal .mh h3{margin:0;font-size:15px}
  .modal .mb{padding:18px 20px}
  .grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
  .modal .mf{padding:14px 20px;border-top:1px solid var(--line);display:flex;justify-content:flex-end;gap:10px}
  .x{cursor:pointer;color:var(--muted);font-size:20px;line-height:1}

  .empty{color:var(--muted);text-align:center;padding:30px;font-size:13px}
  .toast{position:fixed;bottom:22px;right:22px;background:var(--panel2);border:1px solid var(--line);padding:12px 16px;border-radius:10px;font-size:13px;box-shadow:var(--shadow);z-index:60;display:none}
  .toast.show{display:block} .toast.err{border-color:var(--red);color:#fca5a5}
  .spin{display:inline-block;width:15px;height:15px;border:2px solid var(--line);border-top-color:var(--accent);border-radius:50%;animation:s .7s linear infinite;vertical-align:-2px}
  @keyframes s{to{transform:rotate(360deg)}}
  .denied{max-width:520px;margin:14vh auto;text-align:center}
  .denied .lock{font-size:46px}