:root{--bg:#f4f5f7;--fg:#1c2230;--card:#fff;--line:#d9dde5;--acc:#2456d6;--err:#b3261e}
@media (prefers-color-scheme:dark){:root{--bg:#12151c;--fg:#e6e9f0;--card:#1b2030;--line:#2c3348;--acc:#6d93ff;--err:#ff8a80}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.4 system-ui,sans-serif}
body.center{min-height:100vh;display:grid;place-items:center;padding:16px}
header{display:flex;justify-content:space-between;gap:12px;padding:12px 16px;border-bottom:1px solid var(--line);background:var(--card)}
header a{color:var(--acc)}
main{max-width:560px;margin:24px auto;padding:0 16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:20px;width:100%;max-width:380px}
main .card{max-width:none}
h1{margin:0 0 12px;font-size:20px}
label{display:block;margin-bottom:12px;font-size:14px}
input{display:block;width:100%;margin-top:4px;padding:10px;border:1px solid var(--line);border-radius:6px;background:var(--bg);color:var(--fg);font:inherit}
#out{font-family:ui-monospace,monospace;letter-spacing:.5px}
button{padding:10px 16px;border:0;border-radius:6px;background:var(--acc);color:#fff;font:inherit;cursor:pointer}
.tabs{display:flex;gap:6px;margin-bottom:12px}
.tab{background:transparent;color:var(--fg);border:1px solid var(--line)}
.tab.active{background:var(--acc);color:#fff;border-color:var(--acc)}
.row{display:flex;gap:8px}.row input{margin:0}
.err{color:var(--err);margin:8px 0 0}

/* --- v2: nav, tables, badges, flashes --- */
header nav{display:flex;gap:14px;align-items:center;flex-wrap:wrap}
header nav a{color:var(--fg);text-decoration:none;padding:4px 2px;border-bottom:2px solid transparent}
header nav a.on{border-color:var(--acc)}
.who{display:flex;gap:10px;align-items:center;font-size:14px}
form.inline{display:inline;margin:0}
button.link{background:none;color:var(--acc);padding:0;text-decoration:underline}
main{max-width:960px}
main > .card{margin-bottom:16px}
.card.narrow{max-width:380px;margin:0 auto}
body.center main{width:100%}
.card.wide{max-width:none}
h2{margin:0 0 12px;font-size:17px}
.muted{color:#7b8499;font-size:13px}
.scroll{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{padding:8px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.actions{display:flex;flex-wrap:wrap;gap:6px}
.actions form{display:flex;gap:4px;margin:0}
.actions select{width:auto;margin:0;padding:4px}
button.sm{padding:5px 9px;font-size:13px}
button.danger{background:var(--err)}
.row.wrap{flex-wrap:wrap}
.row.wrap input,.row.wrap select{width:auto;flex:1 1 180px;margin:0}
select{padding:10px;border:1px solid var(--line);border-radius:6px;background:var(--bg);color:var(--fg);font:inherit}
.badge{display:inline-block;padding:1px 8px;border-radius:99px;font-size:12px;border:1px solid var(--line)}
.badge.ok{border-color:#2e9e5b;color:#2e9e5b}.badge.off{color:#7b8499}.badge.warn{border-color:#c98a00;color:#c98a00}
.flash{padding:10px 12px;border-radius:6px;border:1px solid var(--line);background:var(--card);margin:0 0 12px}
.flash.ok{border-color:#2e9e5b}.flash.err{border-color:var(--err);color:var(--err)}.flash.warn{border-color:#c98a00}
.tempbox code{font-size:18px;padding:4px 8px;background:var(--bg);border-radius:4px;user-select:all}
.qr{width:200px;height:200px;background:#fff;margin:8px 0}.qr svg{width:100%;height:100%;display:block}
code{font-family:ui-monospace,monospace}

/* --- v3 profiles --- */
.ver{border-top:1px solid var(--line);padding:12px 0}
.ver p{margin:0 0 8px}
.settings{display:flex;flex-wrap:wrap;gap:10px 16px;align-items:flex-end;margin-bottom:10px}
.settings label{margin:0}.settings input[type=number]{width:90px}
label.chk{display:flex;gap:6px;align-items:center;padding-bottom:10px}
label.chk input{width:auto;margin:0}
.mono{font-family:ui-monospace,monospace;letter-spacing:1px}
.ver form{margin-bottom:8px}

/* --- v4: two-mode home, registry, admin mode --- */
.mode{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:14px}
.modebtn{display:flex;flex-direction:column;align-items:flex-start;gap:2px;text-align:left;padding:14px 16px;background:var(--card);color:var(--fg);border:2px solid var(--line);border-radius:10px}
.modebtn span{font-size:13px;color:#7b8499}
.modebtn.active{border-color:var(--acc);box-shadow:0 0 0 3px color-mix(in srgb,var(--acc) 18%,transparent)}
@media (max-width:520px){.mode{grid-template-columns:1fr}}
.grow{flex:1 1 220px}
.row.wrap label{margin:0}
.pwrow{margin:12px 0}
.pwrow input{font-size:18px}
.devinfo p{margin:0 0 4px}
.alt{align-items:center;margin:10px 0}
.alt select{flex:1 1 220px;width:auto;margin:0;padding:6px}
#fRegister{margin-top:10px}
button.secondary{background:transparent;color:var(--acc);border:1px solid var(--acc)}
button:disabled{opacity:.45;cursor:not-allowed}
.stack{display:flex;flex-direction:column;gap:6px;margin:6px 0}
.stack input,.stack select{margin:0;padding:6px}
details summary{cursor:pointer;color:var(--acc);margin:6px 0}
.codes{font-family:ui-monospace,monospace;font-size:16px;line-height:1.7;background:var(--bg);padding:10px 14px;border-radius:6px;columns:2;max-width:360px}
.steps{padding-left:20px}
.inline-form{margin:0 0 8px}
.sudo{border-color:#c98a00}
td.mono{white-space:nowrap}

/* --- layout fixes --- */
select{max-width:100%}
.row.wrap{align-items:flex-end}
.row.wrap label.grow input{width:100%;margin-top:4px}
#fLookup button{height:42px}
.pwrow{flex-wrap:wrap}
.pwrow input{flex:1 1 260px;min-width:0}
.alt select{min-width:0}
.sudo form > span{flex-basis:100%}
.sudo form{align-items:center}
td.actions{display:table-cell}
td.actions form{display:inline-flex;gap:4px;margin:2px 4px 2px 0;vertical-align:middle}
td.actions details form{display:flex}
@media (max-width:520px){
  main{padding:0 12px}
  .pwrow input{font-size:16px;flex-basis:100%}
  .pwrow button{flex:1}
  .alt select{flex-basis:100%}
  header{flex-wrap:wrap}
}
label > select{display:block;width:100%;margin-top:4px}