:root {
  --bg: #f6f5f2;
  --surface: #ffffff;
  --text: #1d1d1b;
  --muted: #6b6a66;
  --line: #e2e0da;
  --accent: #1f4fd6;
  --accent-text: #ffffff;
  --danger: #b3261e;
  --ok: #1e7a3c;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161615;
    --surface: #20201e;
    --text: #ecebe7;
    --muted: #a3a29c;
    --line: #34332f;
    --accent: #7c9bff;
    --accent-text: #0f1220;
    --danger: #ff8a80;
    --ok: #7ed69a;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.6 -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", sans-serif;
}
.bar {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 20px; border-bottom: 1px solid var(--line); background: var(--surface);
}
.spacer { flex: 1; }
.muted { color: var(--muted); }
main { max-width: 1080px; margin: 0 auto; padding: 20px 16px 60px; }
h1 { font-size: 22px; margin: 0 0 8px; }
h2 { font-size: 17px; margin: 0 0 12px; }
h3 { font-size: 15px; margin: 20px 0 8px; }
button, select, input {
  font: inherit; color: inherit;
  border-radius: 8px; border: 1px solid var(--line); background: var(--surface);
  padding: 8px 12px;
}
button { background: var(--accent); color: var(--accent-text); border-color: var(--accent); cursor: pointer; }
button.ghost { background: transparent; color: var(--text); border-color: var(--line); }
button.danger { background: transparent; color: var(--danger); border-color: var(--line); }
button:disabled { opacity: 0.5; cursor: default; }
input, select { width: 100%; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 20px; margin: 16px 0; }
.narrow { max-width: 420px; margin: 60px auto; }
.form { display: grid; gap: 12px; max-width: 520px; }
.form label { display: grid; gap: 4px; color: var(--muted); font-size: 13px; }
.form label.check { display: flex; align-items: center; gap: 8px; color: var(--text); font-size: 15px; }
.form label.check input { width: auto; }
.row { display: flex; gap: 8px; align-items: center; }
.row button { flex-shrink: 0; white-space: nowrap; }
.row.wrap { flex-wrap: wrap; margin: 12px 0; }
.row.wrap select { width: auto; }
.tabs { display: flex; gap: 4px; margin-bottom: 16px; border-bottom: 1px solid var(--line); }
.tabs button { background: transparent; color: var(--muted); border: none; border-radius: 0; border-bottom: 2px solid transparent; }
.tabs button.active { color: var(--text); border-bottom-color: var(--accent); }
.table-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; margin-top: 12px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { color: var(--muted); font-weight: 500; font-size: 12px; }
tbody tr:last-child td { border-bottom: none; }
tbody tr.clickable { cursor: pointer; }
tbody tr.clickable:hover { background: color-mix(in srgb, var(--accent) 6%, transparent); }
.badge { font-size: 12px; padding: 2px 8px; border-radius: 999px; border: 1px solid var(--line); }
.badge.active { color: var(--ok); }
.badge.refunded, .badge.revoked { color: var(--danger); }
.serial { font: 600 18px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: 0.04em; word-break: break-all; }
pre { white-space: pre-wrap; word-break: break-all; background: var(--bg); padding: 12px; border-radius: 8px; font-size: 12px; }
dialog {
  width: min(860px, calc(100vw - 32px)); border: 1px solid var(--line); border-radius: 14px;
  background: var(--surface); color: var(--text); padding: 20px;
}
dialog::backdrop { background: rgb(0 0 0 / 0.35); }
.dialog-head { display: flex; justify-content: space-between; align-items: center; }
.fields { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; margin: 12px 0; font-size: 14px; }
.fields dt { color: var(--muted); }
.fields dd { margin: 0; word-break: break-all; }
#toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%);
  background: var(--text); color: var(--bg); padding: 10px 16px; border-radius: 8px; max-width: calc(100vw - 32px);
}
@media (max-width: 600px) {
  .bar { padding: 12px 16px; }
  .fields { grid-template-columns: 1fr; }
}