:root {
  --bg: #0f1419;
  --surface: #1a2026;
  --surface-2: #232a32;
  --border: #2d3640;
  --text: #e7eaef;
  --muted: #8b95a4;
  --primary: #4d8eff;
  --primary-hover: #6aa0ff;
  --danger: #e8534d;
  --warn: #d49a3b;
  --success: #5dd28a;
  --radius: 6px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-hover); text-decoration: underline; }
code { font-family: ui-monospace, "JetBrains Mono", "SF Mono", Menlo, monospace; font-size: 0.92em; background: var(--surface-2); padding: 1px 5px; border-radius: 3px; }
pre.copyable {
  background: var(--surface-2); padding: 12px; border-radius: var(--radius);
  overflow-x: auto; word-break: break-all; white-space: pre-wrap;
  font-family: ui-monospace, monospace; font-size: 0.92em;
  border: 1px solid var(--border);
}

.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 24px; background: var(--surface); border-bottom: 1px solid var(--border);
}
.topbar .brand a { color: var(--text); font-weight: 600; font-size: 1.05em; }
.topbar .links { display: flex; gap: 18px; align-items: center; }
.topbar .me { color: var(--muted); font-size: 0.9em; }
.topbar .logout { color: var(--muted); }

.container { max-width: 1100px; margin: 0 auto; padding: 32px 24px; }
.narrow { max-width: 480px; margin: 60px auto; }

h1 { margin-top: 0; font-size: 1.6em; font-weight: 600; }
h2 { font-size: 1.15em; margin-top: 1.5em; font-weight: 600; }

.card { background: var(--surface); padding: 24px; border-radius: var(--radius); margin-bottom: 24px; border: 1px solid var(--border); }
.muted { color: var(--muted); }
.error { background: rgba(232,83,77,.12); color: #ff8d88; padding: 10px 14px; border-radius: var(--radius); border: 1px solid rgba(232,83,77,.4); margin-bottom: 16px; }
.warning { background: rgba(212,154,59,.12); color: #ffc66d; padding: 14px; border-radius: var(--radius); border: 1px solid rgba(212,154,59,.4); margin: 14px 0; }

form label { display: block; margin: 14px 0; }
form label > input, form input[type=text], form input[type=password] {
  display: block; width: 100%; margin-top: 4px; padding: 10px 12px;
  background: var(--surface-2); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--radius); font-size: 1em;
}
form input:focus { outline: none; border-color: var(--primary); }

button, .btn {
  display: inline-block; padding: 9px 16px; border-radius: var(--radius);
  background: var(--surface-2); color: var(--text); border: 1px solid var(--border);
  cursor: pointer; font-size: 0.95em; font-weight: 500; margin-top: 10px;
  text-decoration: none;
}
button:hover, .btn:hover { background: var(--border); }
button.primary, .btn.primary { background: var(--primary); border-color: var(--primary); color: white; }
button.primary:hover, .btn.primary:hover { background: var(--primary-hover); }
button.danger, .btn.danger { background: var(--danger); border-color: var(--danger); color: white; }
button.danger:hover { background: #cc4640; }
button.warn { background: var(--warn); border-color: var(--warn); color: #1a1300; }
button.small { padding: 4px 10px; font-size: 0.85em; }
.cancel { margin-left: 12px; color: var(--muted); }
form.inline { display: inline; margin: 0; }

table { width: 100%; border-collapse: collapse; margin: 12px 0; }
table th, table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); }
table th { font-weight: 500; color: var(--muted); font-size: 0.88em; text-transform: uppercase; letter-spacing: 0.04em; }
table.kv th { width: 130px; text-transform: none; letter-spacing: 0; color: var(--muted); }

.row-between { display: flex; justify-content: space-between; align-items: center; }
.row-form { display: flex; gap: 8px; align-items: stretch; margin-top: 12px; flex-wrap: wrap; }
.row-form input { flex: 1; min-width: 160px; }
.row-form button { margin-top: 0; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin: 20px 0 32px; }
.stat { background: var(--surface); padding: 18px 22px; border-radius: var(--radius); border: 1px solid var(--border); }
.stat .num { font-size: 1.8em; font-weight: 600; }
.stat .lbl { color: var(--muted); font-size: 0.88em; }

.qr-wrap { text-align: center; margin: 20px 0; }
.qr { width: 200px; height: 200px; background: white; padding: 12px; border-radius: var(--radius); }
.totp-secret { display: inline-block; margin-top: 8px; padding: 8px 12px; }

.danger-zone { margin-top: 24px; border: 1px solid rgba(232,83,77,.4); border-radius: var(--radius); padding: 12px 16px; background: rgba(232,83,77,.04); }
.danger-zone summary { cursor: pointer; color: var(--danger); font-weight: 500; }

/* copy buttons */
.copy-wrap { position: relative; display: flex; align-items: stretch; gap: 8px; margin: 12px 0; }
.copy-wrap pre.copy-text { flex: 1; margin: 0; }
.copy-wrap > .btn { margin-top: 0; white-space: nowrap; align-self: stretch; }
button.xsmall, .btn.xsmall { padding: 2px 8px; font-size: 0.8em; margin-left: 8px; margin-top: 0; }
.kv-copy td { white-space: nowrap; }
.kv-copy td .copy-text { display: inline-block; }