:root {
  --bg: #F4F7FA; --surface: #FFFFFF; --sunk: #EEF2F7; --ink: #13233A; --muted: #56657A; --line: #DCE3EC;
  --green: #2E8B45; --green-soft: #E6F2E9; --green-ink: #1F6B34; --blue: #1F5FAE; --blue-soft: #E7EFFA;
  --red: #C93C3C; --red-soft: #FBE9E9; --amber: #B7790B; --amber-soft: #FBF1DC;
  --font: "Figtree", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0E1621; --surface: #162130; --sunk: #1C2A3B; --ink: #E8EEF6; --muted: #9AA9BC; --line: #26364A;
    --green: #3FA95A; --green-soft: #1A3324; --green-ink: #8FD6A2; --blue: #6FA4E8; --blue-soft: #1B2D45;
    --red: #F07575; --red-soft: #3A1F24; --amber: #F0B94A; --amber-soft: #3A3020;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0E1621; --surface: #162130; --sunk: #1C2A3B; --ink: #E8EEF6; --muted: #9AA9BC; --line: #26364A;
  --green: #3FA95A; --green-soft: #1A3324; --green-ink: #8FD6A2; --blue: #6FA4E8; --blue-soft: #1B2D45;
  --red: #F07575; --red-soft: #3A1F24; --amber: #F0B94A; --amber-soft: #3A3020;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--ink); font-family: var(--font); font-size: 16px; line-height: 1.55; min-height: 100vh; display: flex; flex-direction: column; }
a { color: var(--blue); }
h1, h2, h3 { text-wrap: balance; margin: 0; }
button, input, select, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 2px; }

.top { background: var(--surface); border-bottom: 1px solid var(--line); padding-top: env(safe-area-inset-top, 0px); }
.top .in, .foot .in { max-width: 1080px; margin: 0 auto; padding: 12px 24px; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.1rem; color: var(--ink); text-decoration: none; }
.top nav { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.top nav a { color: var(--muted); text-decoration: none; font-weight: 600; }
.top nav a:hover { color: var(--ink); }
.top nav a.btn { color: #fff; }
.top nav form { margin: 0; }
button.link { background: none; border: 0; padding: 0; color: var(--muted); font-weight: 600; cursor: pointer; }
button.link:hover { color: var(--ink); }

.page { flex: 1; width: 100%; max-width: 1080px; margin: 0 auto; padding: 40px 24px 64px; display: grid; gap: 22px; align-content: start; }
body.narrow .page { max-width: 480px; }
body.medium .page { max-width: 760px; }
@media (max-width: 600px) { .top .in, .foot .in { padding-inline: 16px; } .page { padding: 24px 16px 48px; } }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: 18px; padding: 28px; display: grid; gap: 16px; box-shadow: 0 1px 2px rgba(19,35,58,.05), 0 8px 24px rgba(19,35,58,.06); }
@media (max-width: 600px) { .card { padding: 20px; } }
.card h1 { font-size: 1.6rem; font-weight: 800; letter-spacing: -.01em; }
.card h2 { font-size: 1.15rem; font-weight: 700; }
.card p { margin: 0; }
.muted { color: var(--muted); }
.small { font-size: .9rem; }

form.stack { display: grid; gap: 14px; margin: 0; }
.fld { display: grid; gap: 5px; }
.fld label { font-size: .88rem; font-weight: 600; color: var(--muted); }
.fld input, .fld select, .fld textarea { border: 1px solid var(--line); background: var(--bg); border-radius: 10px; padding: 11px 12px; width: 100%; }
.fld input:focus { border-color: var(--blue); }
.fld .hint { font-size: .8rem; color: var(--muted); }
.check { display: flex; gap: 10px; align-items: flex-start; font-size: .94rem; }
.check input { margin-top: 4px; width: 18px; height: 18px; accent-color: var(--green); flex: none; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 1px solid var(--line); background: var(--surface); color: var(--ink);
  padding: 11px 18px; border-radius: 10px; font-weight: 700; cursor: pointer; text-decoration: none; white-space: nowrap; }
.btn:hover { border-color: var(--muted); }
.btn.pri { background: var(--green); border-color: var(--green); color: #fff; }
.btn.pri:hover { filter: brightness(1.07); }
.btn.danger { color: var(--red); border-color: color-mix(in srgb, var(--red) 40%, var(--line)); }
.btn.danger.solid { background: var(--red); color: #fff; border-color: var(--red); }
.btn.sm { padding: 6px 12px; font-size: .9rem; border-radius: 8px; }
.btn.wide { width: 100%; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

.alert { border-radius: 12px; padding: 12px 14px; font-size: .95rem; }
.alert.err { background: var(--red-soft); color: var(--red); }
.alert.ok { background: var(--green-soft); color: var(--green-ink); }
.alert.info { background: var(--blue-soft); }
.alert.warn { background: var(--amber-soft); }

.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 22px; align-items: start; }
.codes { display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px; font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 1.05rem; background: var(--sunk); padding: 14px; border-radius: 12px; }
.secret { font-family: ui-monospace, Menlo, Consolas, monospace; background: var(--sunk); padding: 8px 12px; border-radius: 8px; overflow-wrap: anywhere; }
#qr { width: 180px; background: #fff; border-radius: 12px; padding: 8px; }
#qr svg { width: 100%; height: auto; display: block; }
table.list { width: 100%; border-collapse: collapse; font-size: .92rem; }
table.list th, table.list td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); }
table.list th { font-size: .75rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.pill { font-size: .78rem; font-weight: 700; padding: 3px 9px; border-radius: 999px; background: var(--green-soft); color: var(--green-ink); }
.pill.grey { background: var(--sunk); color: var(--muted); }

.prose { background: var(--surface); border: 1px solid var(--line); border-radius: 18px; padding: 32px; }
.prose h1 { font-size: 1.8rem; margin-bottom: 8px; }
.prose h2 { font-size: 1.2rem; margin: 26px 0 6px; }
.prose p, .prose li { color: var(--ink); }
.prose .draft { background: var(--amber-soft); padding: 10px 14px; border-radius: 10px; }
@media (max-width: 600px) { .prose { padding: 20px; } }

.foot { border-top: 1px solid var(--line); color: var(--muted); font-size: .9rem; padding-bottom: env(safe-area-inset-bottom, 0px); }
.foot strong { color: var(--ink); }
.foot a { color: var(--muted); }