:root {
  --bg: #0f1115; --card: #1a1d24; --line: #2a2f3a; --fg: #e8eaed;
  --muted: #9aa0aa; --accent: #2563eb; --ok: #16a34a; --err: #dc2626; --warn: #d97706;
}
@media (prefers-color-scheme: light) {
  :root { --bg:#f5f6f8; --card:#fff; --line:#e2e5ea; --fg:#1a1d24; --muted:#687080; }
}
* { box-sizing: border-box; }
body { margin:0; background:var(--bg); color:var(--fg);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans Thai", sans-serif;
  line-height:1.55; }
.topbar { display:flex; justify-content:space-between; align-items:center;
  padding:12px 16px; border-bottom:1px solid var(--line); background:var(--card); }
.brand { font-weight:700; color:var(--fg); text-decoration:none; }
.topbar nav a { color:var(--accent); text-decoration:none; margin-left:14px; }
.topbar .who { color:var(--muted); }
.container { max-width:720px; margin:0 auto; padding:16px; }
h1 { font-size:1.4rem; } h2 { font-size:1.15rem; }
a { color:var(--accent); }
.muted { color:var(--muted); } .small { font-size:.88rem; }
.error { color:var(--err); font-weight:600; }
.ok { color:var(--ok); font-weight:600; }
.row-between { display:flex; justify-content:space-between; align-items:center; gap:12px; }

.card { background:var(--card); border:1px solid var(--line); border-radius:12px;
  padding:16px; margin:14px 0; }
label { display:block; margin:10px 0; font-size:.92rem; color:var(--muted); }
input, select { width:100%; margin-top:4px; padding:10px 12px; font-size:1rem;
  background:var(--bg); color:var(--fg); border:1px solid var(--line); border-radius:8px; }
.two { display:flex; gap:10px; } .two label { flex:1; }
fieldset { border:1px solid var(--line); border-radius:10px; margin:12px 0; padding:8px 14px 14px; }
legend { color:var(--fg); font-weight:600; padding:0 6px; }

button, .btn { display:inline-block; cursor:pointer; text-decoration:none; text-align:center;
  background:var(--accent); color:#fff; border:0; border-radius:8px;
  padding:10px 16px; font-size:1rem; font-weight:600; }
.btn-danger { background:var(--err); }
.inline { display:inline-flex; gap:6px; align-items:center; margin:4px 0; flex-wrap:wrap; }
.actions { display:flex; flex-wrap:wrap; gap:8px; margin-top:10px; }

table.list { width:100%; border-collapse:collapse; }
table.list th, table.list td { text-align:left; padding:10px 8px; border-bottom:1px solid var(--line); }
.num { font-variant-numeric:tabular-nums; font-weight:700; font-size:1.05rem; }

.status { font-size:.82rem; padding:3px 9px; border-radius:999px; white-space:nowrap; }
.s-pending { background:#3b2f14; color:#f2c14e; }
.s-reserved,.s-awaiting_payment { background:#13294b; color:#7fb0ff; }
.s-paid { background:#3a2a52; color:#c4a6f0; }
.s-done { background:#13341f; color:#5fd98a; }
.s-failed,.s-cancelled { background:#3a1717; color:#f08a8a; }
@media (prefers-color-scheme: light) {
  .s-pending{background:#fef3c7;color:#92600a}.s-reserved,.s-awaiting_payment{background:#dbeafe;color:#1d4ed8}
  .s-paid{background:#ede9fe;color:#6d28d9}.s-done{background:#dcfce7;color:#15803d}
  .s-failed,.s-cancelled{background:#fee2e2;color:#b91c1c}
}
img.qr { width:220px; height:220px; display:block; margin:12px auto; background:#fff; padding:8px; border-radius:8px; }
.admin-item .actions input { width:auto; flex:1; min-width:120px; }
details summary { cursor:pointer; color:var(--muted); }