:root {
  color-scheme: light dark;
  --bg: #0f1115;
  --panel: #171a21;
  --border: #2a2f3a;
  --text: #e8eaed;
  --muted: #9aa3b2;
  --accent: #4f8cff;
  --danger: #e5533d;
  --ok: #3ecf8e;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
a { color: var(--accent); }
.topbar {
  display: flex; align-items: center; gap: 24px;
  padding: 12px 24px; border-bottom: 1px solid var(--border); background: var(--panel);
}
.brand { font-weight: 700; }
nav { display: flex; gap: 16px; flex: 1; }
nav a { color: var(--text); text-decoration: none; opacity: .8; }
nav a:hover { opacity: 1; }
.who { color: var(--muted); font-size: 13px; }
.link-btn { background: none; border: none; color: var(--accent); cursor: pointer; font: inherit; padding: 0; }
.wrap { max-width: 960px; margin: 0 auto; padding: 24px; }

.login-box { max-width: 320px; margin: 80px auto; }
.login-box form { display: flex; flex-direction: column; gap: 12px; }
label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
input, select {
  background: var(--panel); border: 1px solid var(--border); color: var(--text);
  padding: 10px 12px; border-radius: 8px; font-size: 15px;
}
button {
  background: var(--accent); color: #fff; border: none; padding: 10px 16px;
  border-radius: 8px; cursor: pointer; font-size: 14px;
}
.btn-secondary { background: var(--panel); border: 1px solid var(--border); color: var(--text); }
.btn-danger { background: var(--danger); }
.error { color: var(--danger); }

.row.counters { display: flex; align-items: center; gap: 20px; margin-bottom: 24px; }
.stat { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 12px 20px; text-align: center; }
.stat .n { display: block; font-size: 28px; font-weight: 700; }
.stat .l { color: var(--muted); font-size: 12px; text-transform: uppercase; }

.scan-box { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 20px; margin-bottom: 28px; }
.scan-box input { width: 100%; font-size: 20px; padding: 14px; margin-top: 8px; }
#scan-result { margin-top: 12px; font-size: 14px; }
#scan-result.ok { color: var(--ok); }
#scan-result.err { color: var(--danger); }

.tbl { width: 100%; border-collapse: collapse; }
.tbl th, .tbl td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); font-size: 13px; }
.tbl th { color: var(--muted); font-weight: 500; }

.user-form { display: flex; flex-direction: column; gap: 12px; max-width: 320px; }
.hint { color: var(--muted); font-size: 13px; }