:root {
  --sun: #F5C33B;
  --sun-soft: #FFF4D6;
  --ink: #2F2F2F;
  --muted: #6E6C64;
  --line: #E8E6DE;
  --bg: #FAFAF7;
  --card: #FFFFFF;
  --ok: #2E7D4F;
  --ok-soft: #E3F3EA;
  --err: #C62828;
  --err-soft: #FCE8E8;
  --radius: 20px;
  --shadow: 0 1px 2px rgba(0, 0, 0, .04), 0 6px 24px rgba(0, 0, 0, .04);
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #ECEBE6; --muted: #A9A79E; --line: #34332F; --bg: #151515; --card: #1E1E1D;
    --sun-soft: #3D3626; --ok-soft: #1D3326; --err-soft: #3A1E1E; --shadow: none;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: Poppins, system-ui, -apple-system, "Segoe UI", sans-serif; font-size: 15px; line-height: 1.55;
}
a { color: inherit; text-decoration-color: var(--sun); text-decoration-thickness: 2px; text-underline-offset: 3px; }
h1 { font-size: 26px; font-weight: 600; margin: 0 0 6px; letter-spacing: -.3px; }
h2 { font-size: 18px; font-weight: 600; margin: 0; }
h3 { font-size: 15px; font-weight: 600; margin: 18px 0 6px; }
code, pre { font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: 13px; }
code { background: var(--sun-soft); padding: 2px 6px; border-radius: 6px; word-break: break-all; }
pre { background: #222; color: #F3F1EA; padding: 16px; border-radius: 14px; overflow-x: auto; }
pre code { background: none; padding: 0; color: inherit; word-break: normal; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.center { text-align: center; }
.right { text-align: right; }
.nowrap { white-space: nowrap; }
.err { color: var(--err); }

/* brand mark adapts to theme */
.mark-body { fill: var(--ink); stroke: var(--ink); }
.mark-flap { stroke: var(--card); }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; font-size: 18px; text-decoration: none; }
.brand-lg { font-size: 24px; margin-bottom: 24px; }

/* layout */
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }
.page { padding-top: 28px; padding-bottom: 64px; }
.topbar { background: var(--card); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
.topbar-in { display: flex; align-items: center; gap: 24px; min-height: 64px; flex-wrap: wrap; }
.nav { display: flex; gap: 4px; flex: 1; flex-wrap: wrap; }
.nav a { padding: 8px 14px; border-radius: 999px; text-decoration: none; color: var(--muted); font-weight: 500; }
.nav a:hover { color: var(--ink); background: var(--bg); }
.nav a.active { color: #2F2F2F; background: var(--sun); }
.logout { display: flex; align-items: center; gap: 10px; }
.who { color: var(--muted); font-size: 13px; }
@media (max-width: 720px) { .who { display: none; } .topbar-in { gap: 8px; padding: 8px 16px; } }

.auth { max-width: 440px; margin: 0 auto; padding: 56px 16px; display: flex; flex-direction: column; align-items: center; }
.auth .card { width: 100%; }
.auth form + form { margin-top: 12px; width: 100%; }
.foot { color: var(--muted); font-size: 12px; margin-top: 24px; }

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow);
  margin-bottom: 20px;
}
.card-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 20px; }
.grid > .card { margin-bottom: 0; }
.grid + .card, .grid + section { margin-top: 20px; }
.hero { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 20px; flex-wrap: wrap; }
.stack { display: flex; flex-direction: column; gap: 4px; }
.empty { padding: 18px 0; }
.empty p { margin: 4px 0; }
.notice { background: var(--sun-soft); border-radius: 14px; padding: 12px 16px; margin-bottom: 20px; font-size: 14px; }
.danger h2 { color: var(--err); }

/* forms */
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.field span { font-size: 13px; font-weight: 500; }
input, textarea, select {
  font: inherit; color: var(--ink); background: var(--card); border: 1.5px solid var(--line); border-radius: 12px;
  padding: 11px 14px; width: 100%; transition: border-color .15s;
}
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--sun); box-shadow: 0 0 0 3px rgba(245, 195, 59, .25); }
.inline { display: flex; gap: 10px; margin-top: 14px; flex-wrap: wrap; }
.inline input { flex: 1; min-width: 200px; }

/* buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 0; border-radius: 999px;
  padding: 11px 22px; font: inherit; font-weight: 600; cursor: pointer; text-decoration: none; white-space: nowrap;
  transition: transform .05s, filter .15s, background .15s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--ink); color: var(--card); }
.btn-primary:hover { filter: brightness(1.15); }
.btn-accent { background: var(--sun); color: #2F2F2F; }
.btn-accent:hover { filter: brightness(1.05); }
.btn-ghost { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 1.5px var(--line); }
.btn-ghost:hover { background: var(--bg); }
.btn-danger { background: var(--err); color: #fff; }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-block { width: 100%; margin-top: 8px; }

/* flash + badges */
.flash { border-radius: 14px; padding: 12px 16px; margin-bottom: 16px; font-size: 14px; width: 100%; }
.flash-ok { background: var(--ok-soft); color: var(--ok); }
.flash-err { background: var(--err-soft); color: var(--err); }
.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 12px; font-weight: 500; white-space: nowrap; }
.badge-ok { background: var(--ok-soft); color: var(--ok); }
.badge-err { background: var(--err-soft); color: var(--err); }
.badge-wait { background: var(--sun-soft); color: #7A5C00; }
@media (prefers-color-scheme: dark) { .badge-wait { color: var(--sun); } }

/* lists and tables */
.row-item { display: flex; align-items: center; gap: 14px; padding: 12px 0; border-top: 1px solid var(--line); }
.row-item:first-of-type { border-top: 0; }
.grow { flex: 1; min-width: 0; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--line); flex: none; }
.dot.on { background: var(--ok); box-shadow: 0 0 0 4px var(--ok-soft); }
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th { text-align: left; font-weight: 500; color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .4px; padding: 8px 10px; border-bottom: 1px solid var(--line); }
.table td { padding: 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.table tr:last-child td { border-bottom: 0; }
.card:has(.table) { overflow-x: auto; }

.keybox { background: var(--sun-soft); border-radius: 16px; padding: 16px; margin-bottom: 16px; }
.keybox p { margin: 0 0 8px; }
.copy { display: flex; gap: 10px; align-items: center; margin-bottom: 10px; flex-wrap: wrap; }
.copy code { background: var(--card); padding: 8px 12px; flex: 1; min-width: 0; }

/* pairing */
.pair { display: flex; gap: 36px; align-items: center; flex-wrap: wrap; }
.pair-qr { background: #fff; padding: 18px; border-radius: 20px; border: 1px solid var(--line); line-height: 0; }
.pair-qr img, .pair-qr canvas { display: block; }
.pair-text { flex: 1; min-width: 260px; }
.steps { padding-left: 20px; margin: 12px 0 18px; }
.steps li { margin: 6px 0; }
.manual { display: flex; gap: 20px; margin-bottom: 14px; flex-wrap: wrap; }
.manual div { display: flex; flex-direction: column; gap: 4px; }
.code { font-size: 22px; letter-spacing: 3px; font-weight: 600; padding: 6px 12px; }

.doc ol { padding-left: 20px; }
.doc li { margin: 6px 0; }