:root {
  --bg: #f5f6f8; --card: #fff; --ink: #1d2330; --sub: #667085; --line: #e3e6ec;
  --accent: #1f5eff; --accent-ink: #fff; --warn: #b54708; --warn-bg: #fff4e5;
  --danger: #c01c28; --danger-bg: #fdecec; --ok: #067647; --ok-bg: #e9f8ef;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.55 system-ui, "Noto Sans TC", "Microsoft JhengHei", sans-serif; }
body.busy { cursor: progress; }
body.busy button { pointer-events: none; opacity: .6; }
a { color: var(--accent); text-decoration: none; }
code { font: 13px ui-monospace, Consolas, monospace; background: #eef0f4; padding: 1px 5px; border-radius: 4px; }
.top { display: flex; align-items: center; gap: 24px; padding: 12px 24px; background: #111827; color: #fff; flex-wrap: wrap; }
.brand { font-weight: 600; }
.env { font-size: 12px; margin-left: 8px; padding: 2px 8px; border-radius: 999px; font-weight: 500; }
.env.stg { background: #fdb022; color: #1d2330; }
.env.prod { background: #f04438; color: #fff; }
.top nav { display: flex; gap: 4px; }
.top nav a { color: #cbd5e1; padding: 6px 12px; border-radius: 6px; }
.top nav a.on, .top nav a:hover { background: #1f2937; color: #fff; }
.who { margin-left: auto; display: flex; gap: 12px; align-items: center; font-size: 14px; color: #cbd5e1; }
main { max-width: 1120px; margin: 24px auto; padding: 0 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 24px; }
.card.narrow { max-width: 560px; margin: 0 auto; }
.head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; flex-wrap: wrap; }
h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 17px; margin: 28px 0 10px; }
.sub { color: var(--sub); font-size: 13px; margin: 4px 0; }
.empty { color: var(--sub); text-align: center; padding: 16px; }
.back { display: inline-block; margin-bottom: 10px; font-size: 14px; }
table { width: 100%; border-collapse: collapse; margin-top: 8px; font-size: 14px; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-weight: 600; color: var(--sub); font-size: 13px; background: #fafbfc; }
td.actions { white-space: nowrap; text-align: right; }
td.nowrap { white-space: nowrap; }
.pill { display: inline-block; font-size: 12px; padding: 1px 8px; border-radius: 999px; background: #eef0f4; color: var(--sub); }
.pill.active, .pill.claimed { background: var(--ok-bg); color: var(--ok); }
.pill.trial, .pill.pending_claim { background: #eef4ff; color: var(--accent); }
.pill.suspended, .pill.expired, .pill.closed { background: var(--warn-bg); color: var(--warn); }
.pill.cancelled, .pill.none { background: #eef0f4; color: var(--sub); }
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--line); margin: 16px 0 8px; flex-wrap: wrap; }
.tabs a { padding: 8px 14px; color: var(--sub); border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tabs a.on { color: var(--ink); border-bottom-color: var(--accent); font-weight: 600; }
.tabs a.danger { color: var(--danger); }
form label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--sub); margin: 8px 0; }
label.check { flex-direction: row; align-items: center; gap: 8px; color: var(--ink); font-size: 14px; margin: 4px 0; }
fieldset { border: 1px solid var(--line); border-radius: 8px; padding: 8px 14px; margin: 8px 0; }
legend { font-size: 13px; color: var(--sub); padding: 0 4px; }
input, select { font: inherit; padding: 8px 10px; border: 1px solid #cfd4dc; border-radius: 6px; background: #fff; color: var(--ink); min-width: 0; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; align-items: end; }
.grid2 .span2, .grid2 fieldset, .grid2 .row { grid-column: 1 / -1; }
.filters { display: flex; gap: 8px; margin: 16px 0 4px; flex-wrap: wrap; }
.filters input { flex: 1 1 260px; }
.row { display: flex; gap: 8px; align-items: center; margin: 10px 0; flex-wrap: wrap; }
button, .button { font: inherit; font-size: 14px; padding: 8px 16px; border-radius: 6px; border: 1px solid #cfd4dc; background: #fff; color: var(--ink); cursor: pointer; display: inline-block; }
button.primary, .button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
button.warn { background: var(--warn-bg); border-color: #f7c68b; color: var(--warn); }
button.danger { background: var(--danger); border-color: var(--danger); color: #fff; }
button.danger:disabled { opacity: .4; cursor: not-allowed; }
button.ghost, .button.ghost { background: transparent; }
.top button.ghost { color: #cbd5e1; border-color: #374151; padding: 4px 10px; }
button.small { padding: 4px 10px; font-size: 13px; margin-left: 4px; }
button:disabled { opacity: .5; cursor: not-allowed; }
.msg { padding: 8px 12px; border-radius: 6px; font-size: 14px; }
.msg.error { background: var(--danger-bg); color: var(--danger); }
.msg.ok { background: var(--ok-bg); color: var(--ok); }
.seatcard { border: 1px solid var(--line); border-radius: 8px; padding: 12px 16px; margin: 12px 0; }
.seatcard h2 { margin: 4px 0; }
.meter { display: flex; gap: 16px; font-size: 13px; color: var(--sub); flex-wrap: wrap; }
.meter b { color: var(--ink); font-size: 15px; }
.assign select { min-width: 260px; }
.danger-box { border: 1px solid #f5b5b5; background: #fffafa; border-radius: 8px; padding: 12px 20px; margin-top: 12px; }
.danger-box h2 { margin-top: 8px; color: var(--danger); }
.qr { display: block; width: 200px; height: 200px; margin: 12px auto; }
@media (max-width: 720px) {
  .grid2 { grid-template-columns: 1fr; }
  .top { padding: 10px 16px; gap: 10px; }
  table { display: block; overflow-x: auto; }
}