:root { --fg:#1f2933; --muted:#6b7780; --bg:#f4f6f8; --card:#fff; --line:#d9dee3; --accent:#0b5cad; --err:#b42318; --ok:#1a7f37; }
* { box-sizing: border-box; }
body { margin:0; font:15px/1.45 Arial, Helvetica, sans-serif; color:var(--fg); background:var(--bg); }
.top { display:flex; align-items:center; justify-content:space-between; padding:10px 20px; background:#12324f; color:#fff; flex-wrap:wrap; gap:8px; }
.top .brand { font-weight:bold; }
.top nav { display:flex; gap:16px; align-items:center; flex-wrap:wrap; }
.top a, .top button.link { color:#fff; text-decoration:none; }
main { max-width:1200px; margin:24px auto; padding:0 16px; }
.card { background:var(--card); border:1px solid var(--line); border-radius:6px; padding:20px 24px; margin-bottom:20px; }
.card.narrow { max-width:440px; margin:40px auto; }
h1 { font-size:20px; margin:0 0 14px; }
label { display:block; margin:0 0 12px; font-weight:bold; }
input[type=email], input[type=password], input[type=text], input[type=number], select { display:block; width:100%; margin-top:4px; padding:8px 10px; border:1px solid var(--line); border-radius:4px; font:inherit; }
button { padding:8px 16px; border:0; border-radius:4px; background:var(--accent); color:#fff; font:inherit; cursor:pointer; }
button.link { background:none; padding:0; color:var(--accent); text-decoration:underline; }
form.inline { display:inline; margin:0; }
.errors { background:#fdecea; border:1px solid #f5c2bd; color:var(--err); padding:8px 12px; border-radius:4px; margin-bottom:12px; }
.errors ul { margin:0; padding-left:18px; }
.flash { background:#e8f3ea; border:1px solid #b7dcc0; color:var(--ok); padding:8px 12px; border-radius:4px; }
.muted { color:var(--muted); }
.qr { width:220px; margin:10px 0; }
.qr svg { width:100%; height:auto; }
code.key { font-size:16px; letter-spacing:1px; background:var(--bg); padding:2px 6px; border-radius:3px; }

/* admin */
h2 { font-size:16px; margin:18px 0 10px; }
.card.narrow-wide { max-width:820px; }
.subnav { display:flex; gap:4px; margin-bottom:16px; flex-wrap:wrap; }
.subnav a { padding:6px 12px; border-radius:4px; background:#e3e8ed; color:var(--fg); text-decoration:none; }
.subnav a.on { background:var(--accent); color:#fff; }
.bar { display:flex; justify-content:space-between; align-items:center; gap:12px; flex-wrap:wrap; }
.btn { display:inline-block; padding:8px 14px; border-radius:4px; background:var(--accent); color:#fff; text-decoration:none; }
button.secondary { background:#e3e8ed; color:var(--fg); }
button:disabled { opacity:.45; cursor:default; }
.actions { display:flex; gap:8px; flex-wrap:wrap; }
.actions form { margin:0; }
.scroll { overflow-x:auto; }
table.grid { width:100%; border-collapse:collapse; font-size:14px; }
table.grid th, table.grid td { padding:6px 8px; border-bottom:1px solid var(--line); text-align:left; white-space:nowrap; }
table.grid th { background:#f0f3f6; }
table.grid td.num, table.grid th.num { text-align:right; }
table.grid tr.off td { color:var(--muted); }
.warn { color:#b54708; font-weight:bold; }
.notice { background:#fff8e6; border:1px solid #f3d38a; padding:10px 12px; border-radius:4px; margin-bottom:12px; }
.filters { display:flex; gap:8px; flex-wrap:wrap; margin:10px 0 14px; }
.filters select, .filters input { width:auto; display:inline-block; margin:0; }
.cols { display:grid; grid-template-columns:repeat(auto-fit, minmax(220px, 1fr)); gap:0 16px; }
label.check { font-weight:normal; display:flex; gap:8px; align-items:flex-start; flex-wrap:wrap; }
label.check input { margin-top:3px; }
label small, fieldset small { display:block; font-weight:normal; }
fieldset { border:1px solid var(--line); border-radius:4px; margin:0 0 14px; padding:10px 14px; }
textarea { display:block; width:100%; margin-top:4px; padding:8px 10px; border:1px solid var(--line); border-radius:4px; font:inherit; }