:root{
  --bg:#f3f4f6;
  --card:#fff;
  --primary:#2563eb;
  --primary-600:#1d4ed8;
  --danger:#dc2626;
  --muted:#6b7280;
  --success-bg:#ecfdf5;
  --success-text:#065f46;
  --radius:12px;
  --shadow: 0 6px 20px rgba(13, 42, 74, 0.08);
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
}

*{box-sizing:border-box}
html,body{height:100%;margin:0;background:var(--bg);color:#111}
.page-center{
  min-height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:24px;
}
.card{
  width:100%;
  max-width:420px;
  background:var(--card);
  border-radius:var(--radius);
  padding:28px;
  box-shadow:var(--shadow);
}
.stack{display:flex;flex-direction:column;gap:12px}
.brand{margin:0;font-size:20px;color:var(--primary);text-align:center}
.sub{margin:0;font-size:16px;color:#111;text-align:center}
input[type="email"], input[type="password"], input[type="tel"], #otp-input{
  width:100%;
  padding:12px 14px;
  border-radius:10px;
  border:1px solid #e6e9ee;
  outline:none;
  font-size:15px;
}
input:focus{box-shadow:0 0 0 3px rgba(37,99,235,0.08);border-color:var(--primary)}
.btn{
  padding:10px 14px;
  border-radius:10px;
  border:0;
  cursor:pointer;
  font-weight:600;
}
.btn.primary{background:var(--primary);color:#fff}
.btn.primary:hover{background:var(--primary-600)}
.btn.ghost{background:transparent;border:1px solid #e6e9ee;color:#111}
.btn.danger{background:var(--danger);color:#fff}
.small{font-size:13px}
.muted{color:var(--muted)}
.hidden{display:none}
.otp-row{display:flex;gap:8px;align-items:center}
.otp-row #otp-input{flex:1;padding:12px 14px;font-size:16px}
.otp-row .btn{padding:10px 12px}
.meta-row{display:flex;justify-content:space-between;align-items:center;margin-top:6px}
.toast{
  position:fixed;right:20px;top:20px;padding:10px 14px;border-radius:8px;background:#111;color:#fff;z-index:9999;box-shadow:0 6px 20px rgba(0,0,0,.12)
}
.status{margin:14px 0;padding:12px;border-radius:10px;text-align:center}
.status.success{background:var(--success-bg);color:var(--success-text);border:1px solid #bbf7d0;font-weight:600}
.actions{display:flex;gap:8px;justify-content:center;margin-top:12px}
.sr-only{position:absolute!important;height:1px;width:1px;overflow:hidden;clip:rect(1px,1px,1px,1px);white-space:nowrap}
@media(max-width:480px){.card{padding:18px}}