:root {
  --bg: #eef1f4;
  --card: #ffffff;
  --text: #1f2933;
  --muted: #5c6b7a;
  --accent: #0d5cab;
  --accent-hover: #0a4d91;
  --border: #c5cdd6;
  --input-bg: #ffffff;
  --header-bg: #ffffff;
  --flash-bg: #e8f2fc;
  --flash-border: #b6d4f0;
}
* { box-sizing: border-box; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; }
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: var(--header-bg);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.04);
}
header nav a { margin-right: 1rem; }
main { max-width: 960px; margin: 1.5rem auto; padding: 0 1rem; }
.flash {
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  background: var(--flash-bg);
  border-radius: 6px;
  border: 1px solid var(--flash-border);
  color: var(--text);
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 0.5rem 0.75rem; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 0.85rem; }
.muted { color: var(--muted); font-size: 0.9rem; }
label { display: block; margin-top: 0.75rem; font-size: 0.9rem; color: var(--muted); }
input[type="text"], input[type="password"], input[type="number"], select, textarea {
  width: 100%; max-width: 32rem;
  padding: 0.5rem 0.65rem;
  margin-top: 0.25rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--input-bg);
  color: var(--text);
}
input:focus, select:focus, textarea:focus {
  outline: 2px solid rgba(13, 92, 171, 0.35);
  outline-offset: 1px;
  border-color: var(--accent);
}
textarea { font-family: ui-monospace, monospace; font-size: 0.85rem; min-height: 10rem; }
button, .btn {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.45rem 1rem;
  border-radius: 6px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #ffffff;
  font-weight: 600;
  cursor: pointer;
}
button:hover, .btn:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}
button.secondary, .btn.secondary {
  background: var(--card);
  color: var(--accent);
  border-color: var(--border);
}
button.secondary:hover, .btn.secondary:hover {
  background: var(--bg);
  border-color: var(--muted);
  color: var(--accent-hover);
}
.row { display: flex; gap: 1rem; flex-wrap: wrap; }
.stat { flex: 1; min-width: 8rem; }
h1 { font-size: 1.35rem; margin: 0 0 1rem; font-weight: 650; }
h2 { font-size: 1.1rem; margin: 0 0 0.75rem; font-weight: 600; }
.inactive { opacity: 0.5; color: var(--muted); }
.qr-wrap { margin-top: 1rem; }
.qr-wrap img {
  background: #fff;
  padding: 8px;
  border-radius: 8px;
  border: 1px solid var(--border);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}
.key-field {
  font-family: ui-monospace, "Cascadia Code", "Consolas", monospace;
  font-size: 0.8rem;
  line-height: 1.4;
  max-width: 100%;
  min-height: 3.2rem;
}
.form-actions {
  margin: 0.75rem 0 0;
}
.form-actions button { margin-top: 0.35rem; margin-right: 0.5rem; }