:root {
  --bg: #f4f6f8;
  --surface: #ffffff;
  --surface2: #eef1f4;
  --border: #dde3e9;
  --text: #0f1720;
  --muted: #5b6875;
  --faint: #8a96a3;
  --accent: #0d9488;
  --accent-hover: #0f766e;
  --accent-soft: #ccfbf1;
  --accent-text: #ffffff;
  --danger: #dc2626;
  --danger-soft: #fee2e2;
  --warn: #b45309;
  --ok-soft: #dcfce7;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(15, 23, 32, .06), 0 8px 24px rgba(15, 23, 32, .06);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1016;
    --surface: #121a22;
    --surface2: #19232d;
    --border: #243140;
    --text: #e6edf3;
    --muted: #9aa8b6;
    --faint: #6b7a89;
    --accent: #2dd4bf;
    --accent-hover: #5eead4;
    --accent-soft: #0f2e2c;
    --accent-text: #04201d;
    --danger: #f87171;
    --danger-soft: #3a1414;
    --warn: #fbbf24;
    --ok-soft: #0f2e1d;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { line-height: 1.25; margin: 0 0 8px; letter-spacing: -.01em; }
h1 { font-size: 28px; }
h2 { font-size: 20px; }
h3 { font-size: 16px; }
p { margin: 0 0 12px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.mono { font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-size: 13px; }

.wrap { max-width: 880px; margin: 0 auto; padding: 0 16px; }
.wide { max-width: 1180px; }
header.top { padding: 20px 0; }
header.top .wrap { display: flex; align-items: center; gap: 12px; }
.logo { width: 36px; height: 36px; border-radius: 10px; background: var(--accent); display: grid; place-items: center; flex: none; }
.logo svg { width: 20px; height: 20px; }
.brand { font-weight: 700; font-size: 18px; }
header.top .spacer { flex: 1; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  margin-bottom: 16px;
}
.hero { padding: 32px; }
.hero h1 { margin-bottom: 6px; }

form.inline { display: flex; gap: 10px; flex-wrap: wrap; align-items: flex-end; }
.field { display: flex; flex-direction: column; gap: 6px; flex: 1 1 200px; min-width: 0; }
.field label { font-size: 13px; color: var(--muted); font-weight: 600; }
input[type=text], input[type=password], input[type=number], input[type=date], input[type=url], select, textarea {
  width: 100%;
  font: inherit;
  color: var(--text);
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 11px 12px;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
textarea { resize: vertical; min-height: 90px; }
input:focus, select:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
input.code { text-transform: uppercase; letter-spacing: .08em; font-weight: 600; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: inherit; font-weight: 600;
  border: 1px solid transparent; border-radius: 10px;
  padding: 11px 18px; cursor: pointer;
  background: var(--accent); color: var(--accent-text);
  transition: background .15s, border-color .15s, transform .05s;
  white-space: nowrap; text-decoration: none;
}
.btn:hover { background: var(--accent-hover); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn:focus-visible { outline: 3px solid var(--accent-soft); outline-offset: 1px; }
.btn.secondary { background: var(--surface2); color: var(--text); border-color: var(--border); }
.btn.secondary:hover { border-color: var(--accent); }
.btn.ghost { background: transparent; color: var(--muted); border-color: transparent; padding: 8px 10px; }
.btn.ghost:hover { color: var(--text); background: var(--surface2); }
.btn.danger { background: transparent; color: var(--danger); border-color: var(--border); }
.btn.danger:hover { background: var(--danger-soft); border-color: var(--danger); }
.btn.small { padding: 6px 10px; font-size: 13px; border-radius: 8px; }
.btn[disabled] { opacity: .5; cursor: default; }

.alert { border-radius: 10px; padding: 12px 14px; margin-bottom: 16px; border: 1px solid var(--border); }
.alert.err { background: var(--danger-soft); border-color: var(--danger); color: var(--text); }
.alert.ok { background: var(--ok-soft); border-color: var(--accent); }

.grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); }
.dl {
  display: flex; gap: 12px; align-items: center;
  padding: 14px; border: 1px solid var(--border); border-radius: 12px;
  background: var(--surface2); color: var(--text);
}
.dl:hover { border-color: var(--accent); text-decoration: none; }
.dl .ic { width: 40px; height: 40px; border-radius: 10px; background: var(--surface); display: grid; place-items: center; flex: none; color: var(--accent); }
.dl .ic svg { width: 22px; height: 22px; }
.dl b { display: block; }
.dl span { color: var(--muted); font-size: 13px; }

.tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 16px; }
.tab { font: inherit; font-weight: 600; background: var(--surface2); color: var(--muted); border: 1px solid var(--border); border-radius: 999px; padding: 8px 14px; cursor: pointer; }
.tab.on { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
.pane { display: none; }
.pane.on { display: block; }

.steps { counter-reset: s; list-style: none; padding: 0; margin: 0 0 16px; }
.steps li { counter-increment: s; position: relative; padding: 0 0 12px 38px; }
.steps li::before {
  content: counter(s); position: absolute; left: 0; top: -1px;
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--accent-soft); color: var(--accent); font-weight: 700; font-size: 13px;
  display: grid; place-items: center;
}

.qr { display: flex; gap: 20px; align-items: flex-start; flex-wrap: wrap; }
.qr img { width: 280px; max-width: 100%; height: auto; border-radius: 12px; background: #fff; padding: 8px; border: 1px solid var(--border); image-rendering: pixelated; }
.qr .side { flex: 1 1 240px; min-width: 0; }

.keybox { display: flex; gap: 8px; align-items: stretch; margin-bottom: 12px; }
.keybox textarea { font-family: ui-monospace, Consolas, monospace; font-size: 12px; min-height: 76px; word-break: break-all; }
.row { display: flex; gap: 8px; flex-wrap: wrap; }
.note { background: var(--accent-soft); border-radius: 10px; padding: 12px 14px; margin-bottom: 16px; }
.hidden { display: none !important; }

footer { color: var(--faint); font-size: 13px; padding: 24px 0 40px; text-align: center; }

/* admin */
.layout { display: grid; grid-template-columns: 220px 1fr; gap: 20px; align-items: start; }
nav.side { position: sticky; top: 16px; display: flex; flex-direction: column; gap: 4px; }
nav.side a { color: var(--muted); padding: 10px 12px; border-radius: 10px; font-weight: 600; }
nav.side a:hover { background: var(--surface); color: var(--text); text-decoration: none; }
nav.side a.on { background: var(--surface); color: var(--accent); border: 1px solid var(--border); }
nav.side form { margin-top: 12px; }
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th { text-align: left; color: var(--faint); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .04em; padding: 8px 10px; border-bottom: 1px solid var(--border); }
.table td { padding: 10px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.table tr:last-child td { border-bottom: none; }
.scroll { overflow-x: auto; }
.badge { display: inline-block; border-radius: 999px; padding: 2px 9px; font-size: 12px; font-weight: 600; background: var(--surface2); color: var(--muted); border: 1px solid var(--border); }
.badge.on { background: var(--accent-soft); color: var(--accent); border-color: transparent; }
.badge.off { background: var(--danger-soft); color: var(--danger); border-color: transparent; }
.actions { display: flex; gap: 6px; justify-content: flex-end; flex-wrap: wrap; }
.actions form { margin: 0; }
.formgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; margin-bottom: 12px; }
.formgrid .full { grid-column: 1 / -1; }
.check { display: flex; gap: 8px; align-items: center; font-weight: 600; }
.progress { height: 8px; background: var(--surface2); border-radius: 999px; overflow: hidden; margin: 8px 0; }
.progress i { display: block; height: 100%; width: 0; background: var(--accent); transition: width .3s; }
.w0 { width: 0; } .w1 { width: 14%; } .w2 { width: 28%; } .w3 { width: 43%; } .w4 { width: 57%; } .w5 { width: 71%; } .w6 { width: 86%; } .w7 { width: 100%; }
.status { font-size: 13px; color: var(--muted); }
.status.bad { color: var(--danger); }
.status.good { color: var(--accent); }
.login { max-width: 380px; margin: 10vh auto; }
.copied { color: var(--accent) !important; }

@media (max-width: 760px) {
  .layout { grid-template-columns: 1fr; }
  nav.side { position: static; flex-direction: row; flex-wrap: wrap; }
  nav.side form { margin: 0; }
  .hero { padding: 22px; }
  .card { padding: 18px; }
  h1 { font-size: 24px; }
  .table th:nth-child(n+5), .table td:nth-child(n+5) { display: none; }
  .table td.keep, .table th.keep { display: table-cell; }
}