/* One Tax Network — Billing Portal auth screens (login / register).
   Deliberately different from the client portal: ink navy + gold ledger theme. */
:root{
  --ink:#080d1b;--ink-2:#0e1730;--ink-3:#16224a;
  --gold:#f2b01e;--gold-soft:#ffd873;--paper:#fdfaf3;
  --line:rgba(255,255,255,.10);--muted:#9aa6c4;--ok:#34d399;--bad:#fb7185;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body.bauth{
  min-height:100vh;background:var(--ink);color:#eef2ff;
  font-family:'Sora','Anek Bangla',ui-sans-serif,sans-serif;
  -webkit-font-smoothing:antialiased;
  background-image:
    radial-gradient(900px 520px at 88% -8%,rgba(242,176,30,.16),transparent 60%),
    radial-gradient(700px 500px at 4% 105%,rgba(22,34,74,.9),transparent 62%);
}
a{color:inherit;text-decoration:none}
.bauth-wrap{display:grid;grid-template-columns:1.02fr .98fr;min-height:100vh}
/* ---------- left ledger panel ---------- */
.bauth-art{position:relative;padding:clamp(30px,4.4vw,70px);overflow:hidden;border-right:1px solid var(--line)}
.bauth-art:before{
  content:"";position:absolute;inset:0;opacity:.35;pointer-events:none;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:52px 52px;mask-image:radial-gradient(70% 60% at 30% 30%,#000 30%,transparent 100%)
}
.bauth-brand{position:relative;display:flex;align-items:center;gap:14px}
.bauth-brand img{width:96px;height:auto;display:block;background:#fff;border-radius:10px;padding:6px}
.bauth-brand b{display:block;font-size:14px;letter-spacing:.16em;font-weight:800}
.bauth-brand span{display:block;font-size:11px;letter-spacing:.28em;color:var(--gold);font-weight:700;margin-top:4px}
.bauth-tag{
  position:relative;display:inline-flex;align-items:center;gap:9px;margin:44px 0 20px;
  padding:7px 14px;border:1px solid rgba(242,176,30,.42);border-radius:999px;
  font-size:11px;letter-spacing:.2em;font-weight:800;color:var(--gold-soft);background:rgba(242,176,30,.07)
}
.bauth-art h1{position:relative;font-size:clamp(2.3rem,4.1vw,3.5rem);line-height:1.04;margin:0;font-weight:800;letter-spacing:-.02em}
.bauth-art h1 em{font-style:normal;color:var(--gold);display:block}
.bauth-art p.lede{position:relative;color:var(--muted);max-width:44ch;font-size:15px;line-height:1.7;margin:20px 0 0}
/* invoice mock */
.ledger{
  position:relative;margin-top:38px;max-width:430px;background:var(--paper);color:#1b2130;border-radius:14px;
  padding:22px 24px;box-shadow:0 34px 70px rgba(0,0,0,.55);transform:rotate(-1.15deg);
  animation:ledgerIn .8s cubic-bezier(.2,.8,.25,1) both
}
.ledger:after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:12px;
  background:repeating-linear-gradient(90deg,var(--paper) 0 14px,transparent 14px 20px)}
.ledger h4{margin:0;font-size:11px;letter-spacing:.22em;color:#7a839b;font-weight:800}
.ledger .no{font-family:'IBM Plex Mono',ui-monospace,monospace;font-size:26px;font-weight:600;margin:8px 0 16px;letter-spacing:-.01em}
.ledger .row{display:flex;justify-content:space-between;font-size:12.5px;padding:8px 0;border-top:1px dashed #d8d2c2;color:#414c66}
.ledger .row b{font-family:'IBM Plex Mono',ui-monospace,monospace}
.ledger .row.tot{border-top:2px solid #1b2130;font-size:15px;color:#111827;font-weight:800;padding-top:11px;margin-top:4px}
@keyframes ledgerIn{from{opacity:0;transform:translateY(26px) rotate(-4deg)}to{opacity:1;transform:translateY(0) rotate(-1.15deg)}}
.bauth-feats{position:relative;display:flex;flex-wrap:wrap;gap:10px;margin-top:34px}
.bauth-feats span{display:inline-flex;align-items:center;gap:8px;font-size:11.5px;font-weight:700;color:#cdd6ee;
  border:1px solid var(--line);background:rgba(255,255,255,.04);padding:8px 13px;border-radius:9px}
.bauth-feats i{color:var(--gold)}
/* ---------- right form panel ---------- */
.bauth-form{display:flex;align-items:center;justify-content:center;padding:clamp(28px,4vw,64px)}
.bauth-card{width:min(100%,470px);animation:cardIn .55s ease both}
@keyframes cardIn{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
.bauth-card .kick{font-size:10.5px;letter-spacing:.26em;font-weight:800;color:var(--gold);margin:0 0 12px}
.bauth-card h2{font-size:clamp(1.6rem,2.4vw,2rem);margin:0 0 10px;font-weight:800;letter-spacing:-.01em}
.bauth-card .sub{color:var(--muted);font-size:14px;line-height:1.65;margin:0 0 26px}
.fld{display:block;margin-bottom:15px}
.fld > span{display:block;font-size:11px;letter-spacing:.1em;text-transform:uppercase;font-weight:800;color:#b6c1de;margin-bottom:7px}
.fld input,.fld textarea,.fld select{
  width:100%;font:inherit;font-size:14.5px;color:#fff;background:rgba(255,255,255,.045);
  border:1px solid rgba(255,255,255,.14);border-radius:11px;padding:13px 14px;outline:0;
  transition:border-color .2s,background-color .2s,box-shadow .2s
}
.fld textarea{min-height:82px;resize:vertical}
.fld input::placeholder,.fld textarea::placeholder{color:#6f7d9e}
.fld input:focus,.fld textarea:focus,.fld select:focus{border-color:var(--gold);background:rgba(242,176,30,.07);box-shadow:0 0 0 4px rgba(242,176,30,.13)}
.fld small{display:block;margin-top:6px;color:#7d89a9;font-size:11.5px}
.fld-2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.pw{position:relative}
.pw button{position:absolute;right:6px;top:6px;bottom:6px;width:42px;border:0;background:transparent;color:#93a0c0;cursor:pointer;border-radius:8px}
.pw button:hover{color:var(--gold);background:rgba(255,255,255,.05)}
.bauth-btn{
  width:100%;margin-top:8px;border:0;cursor:pointer;font:inherit;font-weight:800;font-size:15px;color:#1a1204;
  background:linear-gradient(180deg,var(--gold-soft),var(--gold));border-radius:12px;padding:14px 18px;
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  box-shadow:0 12px 30px rgba(242,176,30,.24);transition:transform .18s,box-shadow .18s,filter .18s
}
.bauth-btn:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(242,176,30,.32);filter:saturate(1.08)}
.bauth-btn:disabled{opacity:.6;cursor:progress;transform:none}
.bauth-alt{margin:22px 0 0;font-size:13.5px;color:var(--muted);text-align:center}
.bauth-alt a{color:var(--gold);font-weight:800;border-bottom:1px solid rgba(242,176,30,.4)}
.bauth-note{margin-top:20px;padding:13px 15px;border:1px solid var(--line);border-radius:11px;background:rgba(255,255,255,.03);
  color:#93a0c0;font-size:12px;line-height:1.6;display:flex;gap:10px}
.bauth-note i{color:var(--gold);margin-top:2px}
.msg{border-radius:11px;padding:12px 14px;font-size:13px;font-weight:600;margin-bottom:18px;border:1px solid}
.msg-bad{background:rgba(251,113,133,.11);border-color:rgba(251,113,133,.4);color:#ffc2cc}
.msg-ok{background:rgba(52,211,153,.11);border-color:rgba(52,211,153,.38);color:#b8f2dd}
.logo-drop{display:flex;align-items:center;gap:13px;border:1px dashed rgba(255,255,255,.2);border-radius:12px;padding:12px 14px;background:rgba(255,255,255,.03)}
.logo-drop i{color:var(--gold);font-size:18px}
.logo-drop input{border:0;background:transparent;padding:0;font-size:12.5px}
.bauth-foot{border-top:1px solid var(--line);padding:14px clamp(18px,4vw,44px);display:flex;flex-wrap:wrap;gap:8px 20px;
  align-items:center;justify-content:space-between;font-size:11.5px;color:#7d89a9;grid-column:1/-1}
.bauth-foot b{color:#cdd6ee;letter-spacing:.14em;font-size:10.5px}
@media(max-width:960px){
  .bauth-wrap{grid-template-columns:1fr}
  .bauth-art{border-right:0;border-bottom:1px solid var(--line);padding:28px 22px 34px}
  .ledger{max-width:100%;transform:none;animation:none}
  .bauth-form{padding:32px 20px 44px}
  .fld-2{grid-template-columns:1fr}
}