:root {
  --bg: #f4f6fa; --card: #ffffff; --text: #16202e; --muted: #5b6678; --line: #d8dee8;
  --accent: #1f6feb; --accent-text: #ffffff; --ok: #1a7f37; --err-bg: #fdecec; --err: #b42318;
  --radius: 14px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f141b; --card: #171e28; --text: #e8edf4; --muted: #9aa6b8; --line: #2b3544;
    --accent: #4c8dff; --accent-text: #0b1220; --ok: #3fb950; --err-bg: #3a1618; --err: #ff8a80;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
.top {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 480px; margin: 0 auto; padding: 14px 16px 6px;
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; letter-spacing: .02em; }
.logo { width: 26px; height: 26px; fill: var(--accent); }
.langs { display: flex; gap: 4px; }
.langs button {
  border: 1px solid var(--line); background: transparent; color: var(--muted);
  border-radius: 8px; padding: 4px 9px; font: inherit; font-size: 13px; cursor: pointer;
}
.langs button[aria-pressed="true"] { color: var(--accent); border-color: var(--accent); font-weight: 600; }

.card {
  max-width: 480px; margin: 8px auto 24px; background: var(--card);
  border-radius: var(--radius); padding: 22px 18px 24px;
  box-shadow: 0 1px 2px rgba(0,0,0,.06), 0 8px 24px rgba(0,0,0,.05);
}
@media (max-width: 520px) { .card { margin: 4px 10px 20px; } }
h1 { font-size: 22px; line-height: 1.25; margin: 0 0 6px; }
.lead { color: var(--muted); margin: 0 0 18px; }

.field { display: block; margin: 0 0 14px; }
.field > span { display: block; font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.field small { font-weight: 400; color: var(--muted); }
input[type="email"], input[type="password"], input[type="text"], input:not([type]) {
  width: 100%; font: inherit; color: var(--text); background: transparent;
  border: 1px solid var(--line); border-radius: 10px; padding: 12px 12px;
}
input:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
#code { font-size: 22px; letter-spacing: .12em; text-transform: uppercase; font-variant-numeric: tabular-nums; }

/* a .field > span szabály (blokk, félkövér, 14px) ne hasson a jelszó-sorra */
.field > span.pw { display: flex; gap: 8px; margin: 0; font-size: 16px; font-weight: 400; }
.pw input { flex: 1; min-width: 0; }
.ghost {
  border: 1px solid var(--line); background: transparent; color: var(--muted);
  border-radius: 10px; padding: 0 12px; font: inherit; font-size: 14px; cursor: pointer;
}

.tabs { display: flex; gap: 6px; margin: 4px 0 14px; padding: 4px; border-radius: 12px; background: var(--bg); }
.tabs button {
  flex: 1; border: 0; border-radius: 9px; padding: 9px 6px; font: inherit; font-size: 14px;
  background: transparent; color: var(--muted); cursor: pointer;
}
.tabs button[aria-selected="true"] { background: var(--card); color: var(--text); font-weight: 600;
  box-shadow: 0 1px 2px rgba(0,0,0,.08); }

.check { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: var(--muted); margin: 4px 0 16px; }
.check input { width: 20px; height: 20px; margin-top: 1px; flex: none; accent-color: var(--accent); }

.error { background: var(--err-bg); color: var(--err); border-radius: 10px; padding: 10px 12px;
  font-size: 14px; margin: 0 0 14px; }

.primary {
  display: block; width: 100%; border: 0; border-radius: 12px; padding: 14px;
  background: var(--accent); color: var(--accent-text); font: inherit; font-weight: 700; cursor: pointer;
  text-align: center; text-decoration: none;
}
.primary[disabled] { opacity: .6; cursor: progress; }

#doneView { text-align: center; }
.ok {
  width: 64px; height: 64px; margin: 6px auto 12px; border-radius: 50%;
  background: var(--ok); color: #fff; font-size: 36px; line-height: 64px; font-weight: 700;
}
.car-name { font-size: 18px; font-weight: 600; margin: 4px 0 10px; }
.status { color: var(--muted); margin: 0 0 18px; }
.status.online { color: var(--ok); font-weight: 600; }
.hint { color: var(--muted); font-size: 14px; margin: 16px 0 0; }
[hidden] { display: none !important; }