:root {
  --blue-900:#0f2d5e; --blue-800:#1a3f7a; --blue-700:#1e50a0; --blue-600:#2563c4; --blue-500:#3b82f6;
  --blue-200:#bfdbfe; --blue-100:#dbeafe; --blue-50:#eff6ff;
  --gold-600:#b8860b; --gold-500:#d4a017; --gold-100:#faf3dd;
  --gray-800:#1f2937; --gray-600:#4b5563; --gray-500:#6b7280; --gray-300:#d1d5db; --gray-100:#f3f4f6;
  --red-600:#dc2626; --green-600:#16a34a;
  --white:#fff;
}
* { box-sizing: border-box; }
body {
  margin:0; font-family:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;
  background:var(--blue-50); color:var(--gray-800); min-height:100vh;
}
.ppc-shell { min-height:100vh; display:flex; align-items:center; justify-content:center; padding:24px; }
.ppc-card {
  width:100%; max-width:420px; background:var(--white); border-radius:16px;
  box-shadow:0 10px 40px rgba(15,45,94,0.12); overflow:hidden;
}
.ppc-head {
  background:linear-gradient(155deg,var(--blue-900) 0%,var(--blue-800) 45%,var(--blue-700) 100%);
  padding:28px 28px 24px; color:var(--white);
}
.ppc-badge {
  display:inline-block; border:1px solid rgba(255,255,255,0.25); color:var(--gold-500);
  font-size:10px; font-weight:800; letter-spacing:1px; text-transform:uppercase;
  padding:4px 10px; border-radius:999px; margin-bottom:10px;
}
.ppc-head h1 { margin:0; font-size:19px; font-weight:800; line-height:1.3; }
.ppc-head p { margin:6px 0 0; font-size:12.5px; color:var(--blue-200); }
.ppc-body { padding:28px; }
.ppc-body--wide { max-width:860px; }
.form-group { margin-bottom:16px; }
.form-label { display:block; font-size:12.5px; font-weight:700; color:var(--gray-600); margin-bottom:6px; }
.form-control {
  width:100%; padding:12px 14px; border:1.5px solid var(--gray-300); border-radius:9px;
  font-size:14.5px; background:var(--gray-100); transition:.15s; font-family:inherit;
}
.form-control:focus { outline:none; border-color:var(--blue-500); background:var(--white); box-shadow:0 0 0 3px rgba(59,130,246,0.1); }
textarea.form-control { resize:vertical; min-height:80px; }
.btn {
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  width:100%; padding:13px; border:none; border-radius:9px; font-size:14.5px; font-weight:700;
  cursor:pointer; transition:.15s; font-family:inherit;
}
.btn-primary { background:linear-gradient(135deg,var(--blue-700),var(--blue-600)); color:var(--white); }
.btn-primary:hover { background:linear-gradient(135deg,var(--blue-800),var(--blue-700)); box-shadow:0 6px 20px rgba(30,80,160,0.35); }
.btn-primary:disabled { opacity:.6; cursor:not-allowed; }
.btn-gold { background:linear-gradient(135deg,var(--gold-600),var(--gold-500)); color:var(--white); }
.btn-outline { background:var(--white); color:var(--blue-700); border:1.5px solid var(--blue-200); }
.btn-sm { width:auto; padding:9px 16px; font-size:13px; }
.alert { padding:11px 14px; border-radius:9px; font-size:13px; margin-bottom:16px; }
.alert-info { background:var(--blue-50); border:1px solid var(--blue-100); color:var(--blue-700); }
.alert-error { background:#fef2f2; border:1px solid #fecaca; color:var(--red-600); }
.alert-success { background:#f0fdf4; border:1px solid #bbf7d0; color:var(--green-600); }
.otp-row { display:flex; gap:9px; justify-content:center; margin:18px 0; }
.otp-box {
  width:44px; height:52px; text-align:center; font-size:20px; font-weight:700;
  border:1.5px solid var(--gray-300); border-radius:9px; background:var(--gray-100);
}
.otp-box:focus { outline:none; border-color:var(--blue-500); background:var(--white); box-shadow:0 0 0 3px rgba(59,130,246,0.1); }
.otp-box.filled { border-color:var(--blue-600); background:var(--blue-50); }
.links { text-align:center; margin-top:18px; font-size:13px; }
.links a { color:var(--blue-600); text-decoration:none; font-weight:600; cursor:pointer; }
.links a:hover { color:var(--blue-800); }
.fee-box {
  background:var(--gold-100); border:1.5px solid var(--gold-500); border-radius:12px;
  padding:18px; text-align:center; margin-bottom:20px;
}
.fee-box .amt { font-size:30px; font-weight:800; color:var(--blue-900); font-family:'Sora',sans-serif; }
.fee-box .lbl { font-size:12px; color:var(--gray-600); font-weight:600; text-transform:uppercase; letter-spacing:.5px; }
@media (max-width:480px) {
  .otp-box { width:38px; height:46px; font-size:18px; }
  .ppc-body { padding:22px; }
}