:root {
  --bg: #f4f5f8; --card: #fff; --text: #1b1f29; --muted: #6b7280; --border: #e3e5ea;
  --primary: #4f46e5; --primary-h: #4338ca; --danger: #dc2626; --ok-bg: #ecfdf3; --ok: #067647;
  --err-bg: #fef3f2; --err: #b42318; --radius: 12px;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0f1117; --card: #181b23; --text: #e8eaf0; --muted: #9aa1ae; --border: #2a2f3a;
    --ok-bg: #0c2a1c; --ok: #6ce9a6; --err-bg: #2d1414; --err: #fda29b; }
}
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: grid; place-items: center; padding: 24px 16px;
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); }
.card { width: 100%; max-width: 420px; background: var(--card); border: 1px solid var(--border);
  border-radius: 16px; padding: 28px; box-shadow: 0 8px 30px rgba(0,0,0,.06); }
.card.wide { max-width: 640px; }
h1 { font-size: 22px; margin: 0; } h2 { font-size: 16px; margin: 0 0 12px; }
.brand { text-align: center; margin-bottom: 20px; } .brand p { margin: 4px 0 0; }
.logo { font-size: 34px; }
.muted { color: var(--muted); } .small { font-size: 13px; }
.tabs { display: grid; grid-template-columns: 1fr 1fr; background: var(--bg); border-radius: 10px; padding: 4px; margin-bottom: 18px; }
.tab { border: 0; background: none; padding: 8px; border-radius: 8px; font: inherit; color: var(--muted); cursor: pointer; }
.tab.active { background: var(--card); color: var(--text); font-weight: 600; box-shadow: 0 1px 3px rgba(0,0,0,.08); }
form { display: grid; gap: 12px; }
label { display: grid; gap: 4px; font-weight: 500; font-size: 14px; }
input { font: inherit; padding: 10px 12px; border: 1px solid var(--border); border-radius: 10px; background: var(--card); color: var(--text); }
input:focus { outline: 2px solid var(--primary); outline-offset: -1px; border-color: transparent; }
.btn { font: inherit; font-weight: 600; padding: 10px 14px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--card); color: var(--text); cursor: pointer; display: inline-flex; gap: 8px; align-items: center; justify-content: center; }
.btn:hover { background: var(--bg); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-h); }
.btn-passkey, .row .btn { width: 100%; }
.btn-ghost { background: transparent; }
.btn-danger { color: var(--danger); }
.btn-sm { padding: 6px 10px; font-size: 13px; }
.loading { position: relative; color: transparent !important; }
.loading::after { content: ""; position: absolute; width: 16px; height: 16px; border: 2px solid currentColor;
  border-color: var(--muted) transparent var(--muted) transparent; border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.divider { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 13px; margin: 16px 0; }
.divider::before, .divider::after { content: ""; flex: 1; height: 1px; background: var(--border); }
.msg { padding: 10px 12px; border-radius: 10px; margin-bottom: 14px; font-size: 14px; }
.msg.error { background: var(--err-bg); color: var(--err); } .msg.ok { background: var(--ok-bg); color: var(--ok); }
.topbar { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; margin-bottom: 20px; }
.topbar p { margin: 4px 0 0; }
section + section { margin-top: 28px; padding-top: 24px; border-top: 1px solid var(--border); }
.section-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.section-head h2 { margin: 0; }
.list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.item { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 12px; border: 1px solid var(--border); border-radius: 10px; }
.actions { display: flex; gap: 6px; flex-shrink: 0; }
@media (max-width: 520px) { .item { flex-direction: column; align-items: stretch; } .card { padding: 20px; } }
[hidden] { display: none !important; }