:root {
  --bg: #000;
  --fg: #f2f2f2;
  --muted: #8a8a8a;
  --line: #2a2a2a;
  --cell: rgba(18, 18, 18, 0.82);
  --cell-out: rgba(10, 10, 10, 0.6);
  --accent: #fff;
  --sat: #7fb2ff;
  --sun: #ff8a8a;
  --title: #fff; /* タイトル色（まずは白） */
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "Hiragino Sans", "Noto Sans JP", "Yu Gothic", system-ui, sans-serif;
  font-size: 14px;
}

button { font: inherit; color: inherit; cursor: pointer; }

.btn {
  background: rgba(30, 30, 30, 0.9);
  border: 1px solid #555;
  border-radius: 6px;
  padding: 6px 14px;
  white-space: nowrap;
}
.btn:hover { border-color: #aaa; }
.btn:disabled { opacity: .5; cursor: wait; }

/* ---------- header ---------- */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding: 20px 24px 8px;
  max-width: 1100px;
  margin: 0 auto;
}
.title {
  color: var(--title);
  margin: 0;
  font-size: 26px;
  font-weight: 600;
  letter-spacing: .04em;
}
.title-row { display: flex; align-items: center; gap: 10px; }
.icon-btn {
  background: none;
  border: 0;
  color: #999;
  font-size: 20px;
  line-height: 1;
  padding: 4px 6px;
  border-radius: 6px;
}
.icon-btn:hover { color: #fff; background: #222; }
[hidden] { display: none !important; }
.actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.status { color: var(--muted); font-size: 12px; line-height: 1.35; margin-right: 4px; white-space: nowrap; }

.dropdown { position: relative; }
.menu {
  position: absolute;
  right: 0;
  top: calc(100% + 4px);
  background: #151515;
  border: 1px solid #555;
  border-radius: 6px;
  min-width: 120px;
  z-index: 10;
  overflow: hidden;
}
.menu button {
  display: block;
  width: 100%;
  text-align: left;
  background: none;
  border: 0;
  padding: 9px 14px;
}
.menu button:hover, .menu button.active { background: #2b2b2b; }

/* ---------- main ---------- */
main { max-width: 1100px; margin: 0 auto; padding: 8px 24px 40px; }

.nav { display: flex; align-items: center; justify-content: center; gap: 18px; margin: 8px 0; }
.nav h2 { margin: 0; font-size: 20px; font-weight: 500; min-width: 220px; text-align: center; }
.arrow {
  background: none;
  border: 0;
  font-size: 18px;
  padding: 4px 10px;
  color: #ccc;
}
.arrow:hover { color: #fff; }
.arrow[hidden] { visibility: hidden; display: inline-block; }

.summary {
  display: flex;
  justify-content: center;
  gap: 24px;
  color: #ccc;
  margin-bottom: 12px;
  font-size: 13px;
}
.summary b { color: #fff; font-size: 15px; font-variant-numeric: tabular-nums; }

/* ---------- calendar ---------- */
.calendar { border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.weekdays, .grid { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); }
.weekdays div {
  text-align: center;
  padding: 6px 0;
  font-size: 12px;
  color: #bbb;
  background: rgba(25, 25, 25, 0.9);
  border-bottom: 1px solid var(--line);
}
.weekdays .sat { color: var(--sat); }
.weekdays .sun { color: var(--sun); }

.day {
  min-height: 104px;
  padding: 4px 6px 6px;
  background: var(--cell);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}
.day:nth-child(7n) { border-right: 0; }
.day.out { background: var(--cell-out); }
.day.out > * { opacity: .45; }
.day .num { font-size: 12px; color: #aaa; margin-bottom: 2px; }
.day.sat .num { color: var(--sat); }
.day.sun .num { color: var(--sun); }
.day.today .num {
  color: #000;
  background: #fff;
  border-radius: 10px;
  padding: 0 6px;
  align-self: flex-start;
  font-weight: 600;
}

.amt {
  display: block;
  text-align: right;
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  line-height: 1.35;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
button.amt {
  background: none;
  border: 0;
  padding: 0 2px;
  width: 100%;
  font-weight: 600;
  border-radius: 3px;
}
button.amt:hover { background: rgba(255, 255, 255, .08); text-decoration: underline; }

/* チャージ：白文字 */
.charge {
  color: #fff;
  font-weight: 600;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 14px;
  font-size: 12px;
  color: #ccc;
}
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend i { width: 10px; height: 10px; border-radius: 2px; display: inline-block; }
.legend .charge-key { font-size: 13px; }

/* ---------- list ---------- */
.table-wrap { border: 1px solid var(--line); border-radius: 8px; overflow-x: auto; background: var(--cell); }
table.list { width: 100%; border-collapse: collapse; }
table.list th, table.list td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  white-space: nowrap;
}
table.list th { font-weight: 500; color: #bbb; font-size: 12px; background: rgba(25, 25, 25, 0.9); }
table.list .num { text-align: right; font-variant-numeric: tabular-nums; }
table.list td.num button.amt { width: auto; display: inline; font-size: 14px; }
table.list td.num .charge { font-size: 14px; }
table.list tr.group td {
  background: rgba(40, 40, 40, 0.9);
  color: #ddd;
  font-size: 12px;
  padding: 5px 12px;
}
table.list tr.group .count { color: #999; margin-left: 10px; }
table.list tr.group .group-line { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
/* ストア別：クリックで展開できる見出し行 */
table.list tr.group.toggle { cursor: pointer; user-select: none; }
table.list tr.group.toggle td { padding-top: 10px; padding-bottom: 10px; font-size: 13px; }
table.list tr.group.toggle:hover td { background: rgba(55, 55, 55, 0.95); }
table.list tr.group.toggle .group-line > span:first-child::before {
  content: "▶";
  display: inline-block;
  width: 1.2em;
  font-size: 10px;
  color: #999;
  transition: transform .15s;
}
table.list tr.group.toggle.open .group-line > span:first-child::before { transform: rotate(90deg); }
table.list tr.group .total { font-size: 13px; font-weight: 700; color: #fff; white-space: nowrap; margin-left: auto; }
.swatch { display: inline-block; width: 8px; height: 8px; border-radius: 2px; margin-right: 6px; }
.empty { text-align: center; color: var(--muted); }
.back { text-align: center; margin-top: 16px; }

/* ---------- settings ---------- */
.settings { max-width: 640px; margin: 8px auto 0; display: flex; flex-direction: column; gap: 16px; }
.card {
  background: #111;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px 18px;
}
.card h2 { font-size: 16px; font-weight: 600; margin: 0 0 10px; }
.card p { margin: 0 0 10px; line-height: 1.6; }
.card.intro { border-color: #4fc3f7; }
.steps { margin: 0 0 14px; padding-left: 1.4em; line-height: 1.8; color: #ddd; }
.steps a, .card a { color: #4fc3f7; }
.note { color: #999; font-size: 12px; }
.form { display: flex; flex-direction: column; gap: 12px; }
.form label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: #ccc; }
.form input[type=email], .form input[type=password], .form input[type=text] {
  background: #000;
  color: #fff;
  border: 1px solid #555;
  border-radius: 6px;
  padding: 8px 10px;
  font: inherit;
  font-size: 15px;
}
.form input:focus { outline: 2px solid #4fc3f7; outline-offset: -1px; }
.form fieldset { border: 1px solid var(--line); border-radius: 6px; margin: 0; padding: 8px 10px; }
.form legend { font-size: 13px; color: #ccc; padding: 0 4px; }
.form-actions { display: flex; gap: 8px; }
.btn.primary { background: #4fc3f7; color: #000; border-color: #4fc3f7; font-weight: 600; }
.btn.primary:hover { background: #81d4fa; }
.btn.small { padding: 2px 10px; font-size: 12px; }
.message { min-height: 1.2em; margin: 0; font-size: 13px; color: #ddd; }
.store-checks { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 4px 12px; }
.store-checks label { flex-direction: row; align-items: center; gap: 6px; color: #eee; }
.store-checks .count, .groups .count { color: #888; font-size: 12px; }
.groups { list-style: none; margin: 0 0 14px; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.groups li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  padding: 6px 10px;
  background: #1a1a1a;
  border-radius: 6px;
  font-size: 13px;
}
.groups li.empty { color: #888; background: none; padding-left: 0; }


/* ---------- detail dialog ---------- */
dialog {
  background: #141414;
  color: var(--fg);
  border: 1px solid #555;
  border-radius: 10px;
  padding: 18px 22px;
  min-width: 280px;
}
dialog::backdrop { background: rgba(0, 0, 0, .6); }
dialog h3 { margin: 0 0 12px; font-size: 16px; font-weight: 600; border-left: 4px solid var(--store, #fff); padding-left: 8px; }
dialog dl { display: grid; grid-template-columns: auto 1fr; gap: 8px 16px; margin: 0 0 16px; }
dialog dt { color: #999; }
dialog dd { margin: 0; }
dialog #dAmount { font-weight: 700; font-size: 16px; }
dialog form { text-align: right; }

/* ---------- mobile ---------- */
@media (max-width: 640px) {
  .topbar, main { padding-left: 16px; padding-right: 16px; }
  .title { font-size: 20px; }
  .title-row { width: 100%; justify-content: space-between; }
  /* ステータス(2行)＋ボタン3つを1行に収める */
  .actions { width: 100%; flex-wrap: nowrap; gap: 6px; }
  .status { font-size: 11px; margin-right: auto; }
  .btn { padding: 6px 9px; font-size: 13px; }
  /* 一覧：画面幅に収める（種別列は隠す。チャージは「+」付きで区別できる） */
  table.list th:nth-child(2), table.list td:nth-child(2):not([colspan]) { display: none; }
  table.list th, table.list td { padding: 7px 8px; font-size: 12px; }
  table.list td:nth-child(3) { white-space: normal; word-break: break-all; }
  table.list td.num button.amt, table.list td.num .charge { font-size: 13px; }
  table.list tr.group .group-line { flex-wrap: wrap; gap: 2px 12px; }
  .nav h2 { font-size: 16px; min-width: 0; }
  .day { min-height: 72px; padding: 2px 2px 4px; }
  .amt { font-size: 10.5px; }
  .summary { gap: 12px; flex-wrap: wrap; }
}

/* ---------- mobile edition ---------- */
.note-list { margin: 0 0 14px; padding-left: 1.2em; color: #999; font-size: 12px; line-height: 1.7; }
.note-list b { color: #ddd; }