:root{
    --navy:#0f2747; --navy-2:#173a66; --blue:#1d5fd1; --blue-d:#174ea9; --blue-50:#eaf1fd;
    --ground:#f3f5f9; --card:#fff; --line:#dfe4ec; --text:#1b2433; --muted:#5b6678;
    --ok:#137a43; --ok-50:#e7f6ee; --bad:#b42318; --bad-50:#fdecea; --warn:#8a5a00; --warn-50:#fff4dc;
    --r:12px; --shadow:0 1px 2px rgba(16,24,40,.06),0 1px 3px rgba(16,24,40,.08);
  }
  *{box-sizing:border-box}
  html,body{margin:0;background:var(--ground);color:var(--text);font:15px/1.5 Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}
  h1,h2,h3{margin:0;line-height:1.25}
  a{color:var(--blue)}
  button{font:inherit;cursor:pointer}
  .proto-bar{background:#fff4dc;color:#6b4a00;font-size:13px;text-align:center;padding:6px 12px;border-bottom:1px solid #f0dca6}
  .hidden{display:none !important}

  /* ---------- Buttons & inputs ---------- */
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 18px;border-radius:10px;border:1px solid transparent;font-weight:600;text-decoration:none}
  .btn-primary{background:var(--blue);color:#fff}
  .btn-primary:hover{background:var(--blue-d)}
  .btn-primary:disabled{background:#9db6e6;cursor:not-allowed}
  .btn-ghost{background:#fff;color:var(--text);border-color:var(--line)}
  .btn-ghost:hover{background:#f7f9fc}
  .btn-link{background:none;border:none;color:var(--blue);padding:0;min-height:auto;font-weight:600}
  label{display:block;font-weight:600;font-size:14px;margin-bottom:6px}
  .field{margin-bottom:16px}
  .input{width:100%;min-height:46px;padding:10px 12px;border:1px solid #c9d1dd;border-radius:10px;font:inherit;background:#fff;color:var(--text)}
  .input:focus{outline:3px solid #b9cff7;border-color:var(--blue)}
  .hint{font-size:13px;color:var(--muted);margin-top:4px}
  .err{font-size:13px;color:var(--bad);margin-top:4px}

  /* ---------- Login ---------- */
  .login-wrap{min-height:100vh;display:grid;grid-template-columns:1fr 1fr}
  .login-side{background:var(--navy);color:#fff;padding:56px;display:flex;flex-direction:column;justify-content:space-between}
  .login-side h1{font-size:34px;margin-top:40px;max-width:420px}
  .login-side p{color:#c6d3e8;max-width:420px}
  .login-side ul{padding:0;margin:24px 0 0;list-style:none;display:grid;gap:12px;color:#dbe5f5}
  .login-side li{display:flex;gap:10px;align-items:center}
  .login-main{display:flex;align-items:center;justify-content:center;padding:32px}
  .login-card{width:100%;max-width:400px}
  .login-card h2{font-size:26px;margin-bottom:6px}
  .brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px}
  .brand-mark{width:36px;height:36px;border-radius:9px;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:700}

  /* ---------- App shell ---------- */
  .topbar{background:var(--navy);color:#fff}
  .topbar-in{max-width:1240px;margin:0 auto;padding:0 20px;min-height:64px;display:flex;align-items:center;gap:24px;flex-wrap:wrap}
  .topbar nav{display:flex;gap:4px;flex-wrap:wrap}
  .topbar nav button{background:none;border:none;color:#c6d3e8;padding:10px 12px;border-radius:8px;font-weight:600;min-height:44px}
  .topbar nav button:hover,.topbar nav button.active{background:var(--navy-2);color:#fff}
  .topbar .right{margin-left:auto;display:flex;align-items:center;gap:14px}
  .bal-pill{background:var(--navy-2);border-radius:999px;padding:6px 14px;font-weight:600;font-size:14px}
  .bal-pill span{color:#9fb6d8;font-weight:500;margin-right:6px}
  .topbar .btn-ghost{min-height:38px;background:transparent;color:#fff;border-color:#3a5880}
  .page{max-width:1240px;margin:0 auto;padding:28px 20px 60px}
  .crumbs{font-size:14px;color:var(--muted);margin-bottom:8px;display:flex;gap:6px;flex-wrap:wrap}
  .crumbs button{background:none;border:none;padding:0;color:var(--blue);font-weight:600}
  .page-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:22px}
  .page-head h1{font-size:28px}
  .page-head p{margin:4px 0 0;color:var(--muted)}
  .card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow)}
  .section-title{font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-weight:700;margin:28px 0 12px}

  /* ---------- Dashboard ---------- */
  .dash-top{display:grid;grid-template-columns:1.1fr 2fr;gap:18px}
  .bal-card{padding:22px;display:flex;flex-direction:column;gap:14px}
  .bal-card .amt{font-size:36px;font-weight:700}
  .bal-card .lbl{color:var(--muted);font-size:14px}
  .bal-card .row{display:flex;gap:10px;flex-wrap:wrap}
  .pc-hero{padding:24px;display:flex;gap:20px;align-items:center;justify-content:space-between;background:linear-gradient(0deg,#fff,#fff);border:2px solid #bcd0f3}
  .pc-hero h2{font-size:22px}
  .pc-hero p{margin:6px 0 0;color:var(--muted)}
  .pc-logos{display:flex;gap:8px;margin-top:14px;flex-wrap:wrap}
  .pc-logos img{height:26px;width:auto;max-width:90px;object-fit:contain;background:#fff;border:1px solid var(--line);border-radius:6px;padding:3px 6px}
  .tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:14px}
  .tile{display:flex;flex-direction:column;gap:12px;padding:18px;text-align:left;background:#fff;border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);transition:border-color .15s,box-shadow .15s,transform .15s}
  .tile:hover{border-color:#9fbcef;box-shadow:0 6px 18px rgba(29,95,209,.12);transform:translateY(-2px)}
  .tile .logo{height:48px;display:flex;align-items:center}
  .tile .logo img{max-height:48px;max-width:150px;object-fit:contain}
  .tile .t{font-weight:700}
  .tile .d{color:var(--muted);font-size:14px}
  .tile .go{margin-top:auto;color:var(--blue);font-weight:600;font-size:14px}
  .icon-circle{width:48px;height:48px;border-radius:12px;background:var(--blue-50);color:var(--blue);display:grid;place-items:center}

  /* ---------- Tables ---------- */
  .tbl-wrap{overflow-x:auto}
  table{width:100%;border-collapse:collapse;font-size:14px}
  th{text-align:left;color:var(--muted);font-weight:600;padding:12px 16px;border-bottom:1px solid var(--line);white-space:nowrap}
  td{padding:12px 16px;border-bottom:1px solid #edf0f5;white-space:nowrap}
  tr:last-child td{border-bottom:none}
  .badge{display:inline-block;padding:2px 10px;border-radius:999px;font-size:12px;font-weight:700}
  .b-ok{background:var(--ok-50);color:var(--ok)}
  .b-bad{background:var(--bad-50);color:var(--bad)}
  .b-warn{background:var(--warn-50);color:var(--warn)}
  .empty{padding:28px;text-align:center;color:var(--muted)}

  /* ---------- Payment Center grid ---------- */
  .pc-tools{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:18px}
  .pc-tools .input{max-width:360px}
  .carrier-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;list-style:none;margin:0;padding:0}
  .carrier-card{width:100%;height:120px;background:#fff;border:1px solid var(--line);border-radius:var(--r);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding:14px;box-shadow:var(--shadow);transition:border-color .2s,box-shadow .2s,transform .2s}
  .carrier-card:hover,.carrier-card:focus-visible{border-color:#7fa6ea;box-shadow:0 8px 20px rgba(29,95,209,.14);transform:translateY(-2px);outline:none}
  .carrier-card img{max-height:58px;max-width:100%;object-fit:contain;transition:transform .2s}
  .carrier-card:hover img{transform:scale(1.04)}
  .carrier-card .nm{font-size:13px;color:var(--muted);font-weight:600}
  @media (prefers-reduced-motion:reduce){.carrier-card,.carrier-card img,.tile{transition:none}.carrier-card:hover,.tile:hover{transform:none}.carrier-card:hover img{transform:none}}

  /* ---------- Carrier transaction ---------- */
  .tx-layout{display:grid;grid-template-columns:1fr 360px;gap:20px;align-items:start}
  .tx-head{display:flex;align-items:center;gap:16px}
  .tx-head .logo-box{width:130px;height:64px;background:#fff;border:1px solid var(--line);border-radius:10px;display:grid;place-items:center;padding:8px}
  .tx-head .logo-box img{max-width:100%;max-height:48px;object-fit:contain}
  .step{padding:22px;margin-bottom:16px}
  .step h3{font-size:17px;display:flex;align-items:center;gap:10px;margin-bottom:14px}
  .step-n{width:28px;height:28px;border-radius:50%;background:var(--blue);color:#fff;display:grid;place-items:center;font-size:14px}
  .plans{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:10px}
  .plan{position:relative;text-align:left;padding:14px;border:1.5px solid var(--line);border-radius:10px;background:#fff;min-height:96px}
  .plan:hover{border-color:#9fbcef}
  .plan.sel{border-color:var(--blue);background:var(--blue-50);box-shadow:0 0 0 2px #b9cff7 inset}
  .plan .p{font-size:22px;font-weight:700}
  .plan .n{font-weight:600;font-size:14px}
  .plan .s{font-size:12px;color:var(--muted)}
  .plan .tag{position:absolute;top:10px;right:10px;font-size:11px;font-weight:700;color:var(--blue);background:#fff;border:1px solid #c7d7f5;border-radius:999px;padding:1px 8px}
  .two{display:grid;grid-template-columns:1fr 1fr;gap:14px}
  .pay-opts{display:grid;grid-template-columns:1fr 1fr;gap:10px}
  .pay-opt{display:flex;gap:12px;align-items:flex-start;padding:14px;border:1.5px solid var(--line);border-radius:10px;cursor:pointer;background:#fff}
  .pay-opt input{margin-top:4px;width:18px;height:18px;accent-color:var(--blue)}
  .pay-opt.sel{border-color:var(--blue);background:var(--blue-50)}
  .pay-opt.disabled{opacity:.6;cursor:not-allowed}
  .pay-opt .t{font-weight:700}
  .pay-opt .d{font-size:13px;color:var(--muted)}
  .summary{padding:22px;position:sticky;top:16px}
  .summary h3{font-size:17px;margin-bottom:14px}
  .sum-row{display:flex;justify-content:space-between;gap:12px;padding:8px 0;font-size:14px}
  .sum-row span:first-child{color:var(--muted)}
  .sum-total{border-top:1px solid var(--line);margin-top:6px;padding-top:12px;font-size:18px;font-weight:700}
  .sum-total span:first-child{color:var(--text)}
  .notice{padding:12px 14px;border-radius:10px;font-size:14px;margin-top:12px}
  .n-warn{background:var(--warn-50);color:var(--warn)}
  .n-bad{background:var(--bad-50);color:var(--bad)}
  .n-info{background:var(--blue-50);color:#1c3f86}

  /* ---------- Modal / processing ---------- */
  .overlay{position:fixed;inset:0;background:rgba(15,39,71,.55);display:grid;place-items:center;padding:20px;z-index:20}
  .modal{background:#fff;border-radius:16px;max-width:460px;width:100%;padding:28px;box-shadow:0 20px 50px rgba(0,0,0,.25)}
  .spinner{width:44px;height:44px;border-radius:50%;border:4px solid #d5e1f7;border-top-color:var(--blue);animation:spin .9s linear infinite;margin:0 auto 16px}
  @keyframes spin{to{transform:rotate(360deg)}}
  .pp-head{display:flex;align-items:center;gap:10px;font-weight:700;font-size:20px;color:#003087;margin-bottom:6px}

  /* ---------- Receipt ---------- */
  .result-layout{display:grid;grid-template-columns:1fr 380px;gap:20px;align-items:start}
  .result-banner{padding:22px;display:flex;gap:16px;align-items:center;margin-bottom:16px}
  .result-banner .ic{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;flex:none}
  .ok .ic{background:var(--ok-50);color:var(--ok)}
  .bad .ic{background:var(--bad-50);color:var(--bad)}
  .result-banner h2{font-size:22px}
  .result-banner p{margin:4px 0 0;color:var(--muted)}
  .receipt{padding:24px;font-size:14px}
  .receipt .rh{text-align:center;border-bottom:1px dashed #c4ccd8;padding-bottom:12px;margin-bottom:12px}
  .receipt .rh .b{font-weight:700;font-size:16px}
  .receipt .rr{display:flex;justify-content:space-between;gap:12px;padding:4px 0}
  .receipt .rr span:first-child{color:var(--muted)}
  .receipt .rt{border-top:1px dashed #c4ccd8;margin-top:10px;padding-top:10px;font-weight:700;font-size:16px}
  .receipt .rf{text-align:center;color:var(--muted);font-size:12px;margin-top:14px;border-top:1px dashed #c4ccd8;padding-top:10px}
  .pin{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:18px;letter-spacing:.08em;background:#f3f5f9;padding:8px 10px;border-radius:8px;text-align:center;margin:8px 0}

  @media (max-width:1100px){.carrier-grid{grid-template-columns:repeat(4,1fr)}}
  @media (max-width:900px){
    .login-wrap{grid-template-columns:1fr}.login-side{padding:32px}.login-side h1{margin-top:20px;font-size:26px}
    .dash-top,.tx-layout,.result-layout{grid-template-columns:1fr}
    .carrier-grid{grid-template-columns:repeat(3,1fr)}
    .summary{position:static}
  }
  @media (max-width:600px){
    .carrier-grid{grid-template-columns:repeat(2,1fr)}
    .two,.pay-opts{grid-template-columns:1fr}
    .pc-hero{flex-direction:column;align-items:flex-start}
    .topbar .right{margin-left:0;width:100%;justify-content:space-between}
    .page-head h1{font-size:23px}
  }

  /* ---------- Print: receipt only ---------- */
  @media print{
    body{background:#fff}
    body *{visibility:hidden}
    #printArea,#printArea *{visibility:visible}
    #printArea{position:absolute;left:0;top:0;width:80mm;border:none;box-shadow:none;padding:0}
  }

  .carrier-card.unavailable{opacity:.55}
  .carrier-card .soon{font-size:12px;color:var(--muted);font-weight:600}
  .loading{padding:40px;text-align:center;color:var(--muted)}
  .pay-opt.disabled input{cursor:not-allowed}
  .other-plans{margin-top:22px}
  .pre{white-space:pre-wrap;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12px;background:#f6f7f9;border-radius:8px;padding:10px;margin-top:8px}