:root {
  --brand: #f27024;
  --brand-dark: #d35400;
  --navy: #13294b;
  --bg: #f6f7fb;
  --card: #ffffff;
  --text: #1d2433;
  --muted: #5d6677;
  --line: #e3e6ee;
  --good: #1e8e5a;
  --good-bg: #e8f7ef;
  --warn: #b26a00;
  --warn-bg: #fff4e0;
  --bad: #c0392b;
  --bad-bg: #fdecea;
  --fb: #1877f2;
  --radius: 14px;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: 'Be Vietnam Pro', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
a { color: var(--brand-dark); }
.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px 20px; background: var(--navy); color: #fff;
}
.brand { display: flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; font-weight: 700; }
.logo {
  display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 9px;
  background: var(--brand); color: #fff; font-weight: 800; font-size: 14px; letter-spacing: .5px;
}
.toplink { color: #fff; opacity: .85; text-decoration: none; font-size: 14px; }
.wrap { width: 100%; max-width: 920px; margin: 0 auto; padding: 24px 16px 48px; flex: 1; }
.hero { text-align: center; margin: 16px 0 24px; }
.hero h1, .page-title { font-size: clamp(26px, 5vw, 36px); margin: 0 0 8px; color: var(--navy); }
.hero p { color: var(--muted); max-width: 620px; margin: 0 auto; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: 0 6px 24px rgba(19, 41, 75, .06); }
.form { max-width: 520px; margin: 0 auto 28px; }
label { display: block; font-weight: 600; font-size: 14px; margin-bottom: 14px; }
input, select, textarea {
  display: block; width: 100%; margin-top: 6px; padding: 11px 12px; font: inherit; font-weight: 400;
  border: 1px solid var(--line); border-radius: 10px; background: #fff; color: var(--text);
}
input:focus, select:focus, textarea:focus { outline: 2px solid rgba(242, 112, 36, .35); border-color: var(--brand); }
.tabs { display: flex; gap: 6px; background: var(--bg); padding: 4px; border-radius: 10px; margin-bottom: 16px; }
.tab { flex: 1; border: 0; background: transparent; padding: 9px 8px; border-radius: 8px; font: inherit; font-size: 14px; cursor: pointer; color: var(--muted); }
.tab.active { background: #fff; color: var(--navy); font-weight: 600; box-shadow: 0 1px 4px rgba(0,0,0,.08); }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 16px; border-radius: 10px; border: 1px solid var(--line); background: #fff; color: var(--text);
  font: inherit; font-weight: 600; font-size: 14px; cursor: pointer; text-decoration: none;
}
.btn:hover:not(:disabled) { border-color: var(--brand); }
.btn:disabled { opacity: .5; cursor: default; }
.btn.primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.btn.primary:hover:not(:disabled) { background: var(--brand-dark); }
.btn.fb { background: var(--fb); border-color: var(--fb); color: #fff; }
.btn.ghost { background: transparent; }
.btn.danger { color: var(--bad); }
.btn.small { padding: 6px 10px; font-size: 13px; }
.btn.block { width: 100%; padding: 13px; font-size: 16px; }
.msg { margin: 12px 0 0; min-height: 1.4em; font-size: 14px; color: var(--muted); }
.msg.ok { color: var(--good); }
.msg.err { color: var(--bad); }
.cert-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; margin-bottom: 24px; }
.cert-head { margin-bottom: 12px; }
.cert-contest { display: block; color: var(--navy); font-size: 18px; }
.cert-award { color: var(--muted); font-size: 14px; }
.cert-preview { background: var(--bg); border-radius: 10px; overflow: hidden; min-height: 200px; display: grid; place-items: center; }
.cert-preview img { width: 100%; height: auto; display: block; }
.spinner { color: var(--muted); padding: 40px; }
.spinner.err { color: var(--bad); }
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.hint { font-size: 13px; color: var(--muted); margin: 10px 0 0; word-break: break-all; }
.badge { display: flex; gap: 12px; align-items: flex-start; padding: 16px; border-radius: var(--radius); margin: 16px 0; }
.badge b { font-size: 18px; }
.badge p { margin: 4px 0 0; }
.badge .dot { width: 14px; height: 14px; border-radius: 50%; margin-top: 6px; flex: none; }
.badge.good { background: var(--good-bg); color: var(--good); } .badge.good .dot { background: var(--good); }
.badge.warn { background: var(--warn-bg); color: var(--warn); } .badge.warn .dot { background: var(--warn); }
.badge.bad { background: var(--bad-bg); color: var(--bad); } .badge.bad .dot { background: var(--bad); }
.badge p { color: var(--text); }
.info { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 0; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 8px 16px; margin: 0 0 20px; }
.info div { padding: 10px 0; border-bottom: 1px dashed var(--line); }
.info dt { font-size: 12px; text-transform: uppercase; letter-spacing: .4px; color: var(--muted); }
.info dd { margin: 2px 0 0; font-weight: 600; }
.center { text-align: center; }
.foot { text-align: center; color: var(--muted); font-size: 13px; padding: 20px 16px; }
code { background: rgba(0,0,0,.06); padding: 1px 6px; border-radius: 5px; }
[hidden] { display: none !important; }