:root {
  --navy: #1f2d52;
  --amber: #e8a317;
  --amber-dark: #c98a0c;
  --ink: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --bg: #f4f6fb;
  --card: #ffffff;
  --ok: #15803d;
  --bad: #b91c1c;
  --bad-bg: #fee2e2;
  --radius: 14px;
  --shadow: 0 6px 24px rgba(31, 45, 82, 0.08);
  font-synthesis: none;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg); color: var(--ink); line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 16px; }

/* шапка */
.appbar { background: linear-gradient(135deg, #243567 0%, var(--navy) 70%); color: #fff; }
.appbar .wrap { display: flex; align-items: center; gap: 12px; padding: 18px 16px; }
.brand-badge { font-size: 11px; letter-spacing: 1.5px; text-transform: uppercase; color: #cdd6f0; font-weight: 600; }
.appbar h1 { font-size: 19px; margin: 2px 0 0; font-weight: 700; }
.appbar h1 .accent { color: var(--amber); }
.appbar .logo { width: 40px; height: 40px; border-radius: 10px; flex: none; background: rgba(255,255,255,.12); display: grid; place-items: center; }

/* карточки */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 22px; margin-bottom: 16px; }
.card h2 { font-size: 18px; margin: 0 0 4px; }
.card .sub { color: var(--muted); font-size: 14px; margin: 0 0 18px; }

/* формы */
label { display: block; font-size: 13px; font-weight: 600; color: #374151; margin: 0 0 6px; }
.opt-tag { font-weight: 500; color: var(--muted); font-size: 11.5px; }
.field { margin-bottom: 14px; }
input[type=text], input[type=tel] {
  width: 100%; padding: 12px 14px; font-size: 15px;
  border: 1px solid var(--line); border-radius: 10px; background: #fff; color: var(--ink);
  transition: border-color .15s, box-shadow .15s;
}
input:focus { outline: none; border-color: var(--amber); box-shadow: 0 0 0 3px rgba(232,163,23,.18); }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 520px) { .row2 { grid-template-columns: 1fr; } }

/* кнопки */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-size: 15px; font-weight: 600; padding: 12px 20px; border-radius: 10px; border: 1px solid transparent; cursor: pointer; transition: background .15s, opacity .15s; text-decoration: none; }
.btn-primary { background: var(--navy); color: #fff; width: 100%; }
.btn-primary:hover { background: #19264d; }
.btn-amber { background: var(--amber); color: #3a2a00; }
.btn-amber:hover { background: var(--amber-dark); }
.btn:disabled { opacity: .55; cursor: not-allowed; }

/* инструкция «как вводить» */
.howto { background: #f0f4ff; border: 1px solid #d9e2f7; border-radius: 12px; padding: 14px 16px; margin-bottom: 18px; }
.howto-title { display: flex; align-items: center; gap: 7px; font-weight: 700; font-size: 14px; color: var(--navy); margin-bottom: 8px; }
.howto ul { margin: 0; padding-left: 18px; }
.howto li { font-size: 13.5px; color: #374151; margin-bottom: 5px; }
.howto li:last-child { margin-bottom: 0; }
.howto b { color: var(--navy); }

.hint { font-size: 12.5px; color: var(--muted); margin-top: 10px; }
.err { background: var(--bad-bg); color: var(--bad); border-radius: 10px; padding: 10px 13px; font-size: 14px; margin-bottom: 14px; display: none; }
.err.show { display: block; }
.footer-note { text-align: center; color: #9aa3b2; font-size: 12px; padding: 10px 0 28px; }

/* QR */
.qr-card { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 10px; }
.qr-card h2 { margin: 6px 0 0; }
.qr-card .sub { margin: 0; }
.qr-img { width: 240px; max-width: 70%; height: auto; border-radius: 16px; border: 1px solid var(--line); padding: 12px; background: #fff; }
.qr-link { font-weight: 700; color: var(--navy); text-decoration: none; white-space: nowrap; }
.qr-link:hover { color: var(--amber-dark); }

/* страница сертификата */
.cert-top { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px 22px; margin-bottom: 16px; }
.cert-found { flex: 1 1 auto; min-width: 200px; }
.cf-label { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 700; letter-spacing: .4px; text-transform: uppercase; color: var(--ok); }
.cf-label::before { content: "✓"; font-weight: 900; }
.cf-name { font-size: 21px; font-weight: 800; color: var(--navy); margin-top: 4px; line-height: 1.25; }
.btn.dl { flex: none; box-shadow: 0 4px 14px rgba(232,163,23,.35); }
@media (max-width: 520px) { .btn.dl { width: 100%; } }

.pdf-card { padding: 14px; }
.cert-img { display: block; width: 100%; height: auto; border: 1px solid var(--line); border-radius: 10px; box-shadow: 0 2px 10px rgba(31,45,82,.06); }
.back { text-align: center; margin: 4px 0 0; }
.back a { color: var(--muted); text-decoration: none; font-size: 14px; }
.back a:hover { color: var(--navy); }