:root {
  --bg: #f5f6f8; --fg: #1b1f27; --muted: #5d6675; --card: #ffffff; --line: #d9dde4;
  --accent: #1f5eff; --accent-fg: #ffffff; --danger-bg: #fdecec; --danger-fg: #8a1c1c;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12151b; --fg: #e8ebf0; --muted: #9aa3b2; --card: #1a1f28; --line: #2a303c;
    --accent: #5b8cff; --accent-fg: #0b0f18; --danger-bg: #3a1a1a; --danger-fg: #ffb4b4;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
h1 { font-size: 1.5rem; margin: 0 0 .5rem; }
h2 { font-size: 1.05rem; margin: 0 0 .25rem; }
a { color: var(--accent); }
.muted { color: var(--muted); }
.small { font-size: .875rem; }

.auth { max-width: 26rem; margin: 8vh auto 2rem; padding: 2rem 1.5rem; background: var(--card); border: 1px solid var(--line); border-radius: 12px; }
.auth form { display: grid; gap: 1rem; margin-top: 1rem; }
label { display: grid; gap: .35rem; font-weight: 600; font-size: .9rem; }
input[type=email], input[type=password], input[type=text] {
  font: inherit; padding: .6rem .7rem; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--fg);
}
input:focus-visible, button:focus-visible, a:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
input.code { font-size: 1.4rem; letter-spacing: .3em; text-align: center; }
button { font: inherit; font-weight: 600; padding: .65rem 1rem; border: 0; border-radius: 8px; background: var(--accent); color: var(--accent-fg); cursor: pointer; }
button.link { background: none; color: var(--accent); padding: 0; text-decoration: underline; font-weight: 500; }
.alert { background: var(--danger-bg); color: var(--danger-fg); padding: .6rem .8rem; border-radius: 8px; margin: 1rem 0 0; }
.steps { padding-left: 1.2rem; color: var(--muted); }
.qr { display: block; margin: 1rem auto; background: #fff; padding: 8px; border-radius: 8px; }
.secret { font-family: ui-monospace, monospace; word-break: break-all; background: var(--bg); padding: .5rem; border-radius: 8px; }

.top { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 1.5rem; padding: .75rem 1.25rem; background: var(--card); border-bottom: 1px solid var(--line); }
.brand { font-weight: 800; text-decoration: none; color: var(--fg); }
.top nav { display: flex; gap: 1rem; flex: 1; }
.top nav a { text-decoration: none; color: var(--muted); }
.top nav a[aria-current] { color: var(--fg); font-weight: 600; }
.who { display: flex; align-items: center; gap: 1rem; font-size: .9rem; }
.who form { margin: 0; }
.badge { font-style: normal; font-size: .75rem; background: var(--bg); border: 1px solid var(--line); padding: .1rem .5rem; border-radius: 99px; margin-left: .35rem; }
.page { max-width: 64rem; margin: 0 auto; padding: 1.5rem 1.25rem; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr)); gap: 1rem; margin-top: 1.25rem; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 1rem 1.1rem; }