:root {
  --bg: #f5f6f8;
  --card: #fff;
  --line: #dfe3e8;
  --text: #1d2430;
  --muted: #6b7280;
  --accent: #1a6fe8;
  --ok: #15803d;
  --err: #b91c1c;
  --warn: #b45309;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", "Yu Gothic", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}
a { color: var(--accent); }

.top {
  display: flex; flex-wrap: wrap; gap: 8px 16px;
  align-items: center; justify-content: space-between;
  background: #12263f; color: #fff; padding: 10px 16px;
}
.top .brand { color: #fff; text-decoration: none; font-weight: 700; font-size: 17px; }
.top nav { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; }
.top nav a { color: #cfe0f5; text-decoration: none; font-size: 14px; }
.top nav a:hover { color: #fff; }
.top .who { color: #9fb3cc; font-size: 13px; margin-right: 6px; }
.inline { display: inline-flex; align-items: center; margin: 0; }
button.link {
  background: none; border: none; color: #cfe0f5; cursor: pointer;
  font-size: 14px; padding: 0; text-decoration: underline;
}

main { max-width: 860px; margin: 0 auto; padding: 18px 14px 60px; }
h1 { font-size: 21px; margin: 6px 0 16px; }
h2 { font-size: 15px; margin: 22px 0 8px; color: var(--muted); font-weight: 700; }

.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 10px; padding: 16px; margin-bottom: 16px;
}
.card.narrow { max-width: 380px; margin: 40px auto; }

.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 14px; font-size: 14px; }
.flash.ok, .flash.info { background: #e7f6ec; color: var(--ok); border: 1px solid #b7e2c6; }
.flash.error { background: #fdecec; color: var(--err); border: 1px solid #f3c2c2; }
.flash.warn { background: #fdf3e3; color: var(--warn); border: 1px solid #f0d9ae; }

label { display: block; margin: 12px 0; font-size: 14px; }
input[type=text], input[type=password], input[type=number], select {
  width: 100%; padding: 10px; margin-top: 4px;
  border: 1px solid var(--line); border-radius: 8px;
  font-size: 16px; background: #fff; color: var(--text);
}
input.wide { width: 100%; }

button, .btn {
  display: inline-block; padding: 10px 16px; border-radius: 8px;
  border: 1px solid var(--line); background: #fff; color: var(--text);
  font-size: 15px; cursor: pointer; text-decoration: none;
}
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 700; }
button.big { width: 100%; padding: 14px; font-size: 17px; margin-top: 18px; }
button.danger { background: #fff; border-color: #f3c2c2; color: var(--err); padding: 6px 12px; font-size: 13px; }

/* 車両選択 */
.cars { display: grid; grid-template-columns: repeat(auto-fill, minmax(215px, 1fr)); gap: 10px; }
.car { margin: 0; }
.car input { position: absolute; opacity: 0; }
.car-body {
  display: block; background: var(--card); border: 2px solid var(--line);
  border-radius: 10px; padding: 12px 14px; cursor: pointer;
}
.car input:checked + .car-body { border-color: var(--accent); background: #eef5ff; }
.car input:focus-visible + .car-body { outline: 2px solid var(--accent); outline-offset: 2px; }
.car-name { display: block; font-weight: 700; }
.car-number { display: block; font-size: 14px; }
.car-id { display: block; font-size: 12px; color: var(--muted); font-family: ui-monospace, monospace; }

/* 時間選択 */
.hours { display: flex; flex-wrap: wrap; gap: 10px; }
.hour { margin: 0; }
.hour input { position: absolute; opacity: 0; }
.hour span {
  display: inline-block; background: var(--card); border: 2px solid var(--line);
  border-radius: 999px; padding: 10px 20px; cursor: pointer; font-weight: 700;
}
.hour input:checked + span { border-color: var(--accent); background: #eef5ff; color: var(--accent); }
.hour.custom span { border-radius: 10px; font-weight: 400; }
.hour.custom input[type=number] { width: 80px; display: inline-block; margin: 0 4px; padding: 4px 8px; }

.hint { font-size: 13px; color: var(--muted); }
.muted { color: var(--muted); font-size: 13px; }
.mono { font-family: ui-monospace, monospace; font-size: 13px; }
.nowrap { white-space: nowrap; }
.ok-note { color: var(--ok); font-size: 14px; }

table.kv { width: 100%; border-collapse: collapse; margin-bottom: 14px; }
table.kv th, table.kv td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--line); vertical-align: top; font-size: 14px; }
table.kv th { width: 100px; color: var(--muted); font-weight: 600; white-space: nowrap; }

.share { display: flex; flex-wrap: wrap; gap: 20px; align-items: flex-start; }
.share-url { flex: 1 1 320px; min-width: 0; }
.share-url label { font-weight: 700; margin-bottom: 4px; }
.share-url input { font-family: ui-monospace, monospace; font-size: 14px; }
.share-url button { margin-top: 8px; }
.copied { color: var(--ok); font-size: 13px; margin-left: 8px; }
.qr { text-align: center; }
.qr svg { background: #fff; }

.table-scroll { overflow-x: auto; }
table.list { width: 100%; border-collapse: collapse; background: var(--card); font-size: 14px; }
table.list th, table.list td { padding: 8px 10px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
table.list th { background: #eef1f5; font-size: 13px; color: var(--muted); }
table.list form { margin: 0; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; background: #eef1f5; }
.badge.ok { background: #e7f6ec; color: var(--ok); }
.badge.err { background: #fdecec; color: var(--err); }

.foot { text-align: center; color: var(--muted); font-size: 12px; padding: 20px 0 30px; }

@media (max-width: 480px) {
  .cars { grid-template-columns: 1fr; }
  main { padding: 14px 12px 50px; }
}