:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #1f2933;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #2563eb;
  --danger: #dc2626;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111418;
    --card: #1b1f24;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --border: #2d333b;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP", sans-serif;
  background: var(--bg);
  color: var(--text);
}
header {
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px;
  padding: 16px 24px; max-width: 1000px; margin: 0 auto;
}
h1 { font-size: 1.4rem; margin: 0; }
h2 { font-size: 1rem; margin: 0 0 12px; }
main { max-width: 1000px; margin: 0 auto; padding: 0 24px 40px; display: grid; gap: 16px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 16px; }
.month-nav { display: flex; align-items: center; gap: 12px; font-weight: 600; }
button {
  border: none; background: var(--accent); color: #fff; border-radius: 8px;
  padding: 8px 14px; font-size: 0.95rem; cursor: pointer;
}
button.secondary { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
button.delete { background: transparent; color: var(--danger); padding: 4px 8px; }
form { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; align-items: end; }
label { display: flex; flex-direction: column; gap: 4px; font-size: 0.85rem; color: var(--muted); }
input, select {
  padding: 8px; border: 1px solid var(--border); border-radius: 8px; font-size: 1rem;
  background: var(--card); color: var(--text);
}
.summary { display: grid; grid-template-columns: repeat(3, 1fr); text-align: center; }
.summary .label { display: block; font-size: 0.8rem; color: var(--muted); }
.summary .big { font-size: 1.5rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.charts { display: grid; grid-template-columns: 1fr 1.6fr; gap: 16px; align-items: start; }
@media (max-width: 720px) { .charts { grid-template-columns: 1fr; } }
.chart svg { width: 100%; height: auto; display: block; }
.chart .axis-text { fill: var(--muted); font-size: 11px; }
.chart .grid { stroke: var(--border); }
.legend { list-style: none; padding: 0; margin: 12px 0 0; font-size: 0.9rem; }
.legend li { display: flex; align-items: center; gap: 8px; padding: 2px 0; }
.legend .swatch { width: 12px; height: 12px; border-radius: 3px; flex-shrink: 0; }
.legend .val { margin-left: auto; font-variant-numeric: tabular-nums; color: var(--muted); }
.list-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.list-head h2 { margin: 0; }
table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
th, td { padding: 8px; border-bottom: 1px solid var(--border); text-align: left; }
th { color: var(--muted); font-weight: 500; font-size: 0.8rem; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.empty { color: var(--muted); text-align: center; }
.tooltip {
  position: fixed; pointer-events: none; background: #111827; color: #fff;
  padding: 6px 10px; border-radius: 6px; font-size: 0.85rem; white-space: nowrap; z-index: 10;
}

/* ===== CSV取り込み ===== */
.hint { color: var(--muted); font-size: 0.85rem; margin: 0 0 12px; }
.import-panel { margin-top: 16px; display: grid; gap: 12px; }
.mapping { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }
.import-summary { margin: 0; font-weight: 600; }
.import-actions { display: flex; gap: 8px; justify-content: flex-end; }
button:disabled { opacity: 0.4; cursor: not-allowed; }
.cat-select { padding: 4px 6px; font-size: 0.9rem; border-color: transparent; background: transparent; }
.cat-select:hover, .cat-select:focus { border-color: var(--border); }
td.memo { max-width: 260px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ===== スマホ向け ===== */
@media (max-width: 600px) {
  header { padding: 12px 16px; }
  h1 { font-size: 1.15rem; }
  main { padding: 0 12px calc(24px + env(safe-area-inset-bottom)); gap: 12px; }
  .card { padding: 12px; }
  form, .mapping { grid-template-columns: 1fr 1fr; }
  form button[type="submit"] { grid-column: 1 / -1; padding: 12px; }
  input, select { font-size: 16px; } /* iPhoneで入力時に勝手にズームしないように */
  .summary .big { font-size: 1.15rem; }
  table { font-size: 0.85rem; }
  th, td { padding: 6px 4px; }
  td.memo { max-width: 110px; }
  .cat-select { font-size: 0.85rem; padding: 2px; }
  .list-head { flex-wrap: wrap; gap: 8px; }
}
[hidden] { display: none !important; }
#donut svg { max-width: 260px; margin: 0 auto; }
main { grid-template-columns: minmax(0, 1fr); }
.charts > *, .mapping > *, form > * { min-width: 0; }
input, select { width: 100%; min-width: 0; }
input[type="file"] { width: auto; max-width: 100%; }

/* ===== 収入 ===== */
:root { --plus: #059669; --minus: #dc2626; }
.type-toggle { grid-column: 1 / -1; display: inline-flex; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; justify-self: start; }
.type-toggle label { position: relative; flex-direction: row; color: var(--text); cursor: pointer; }
.type-toggle input { position: absolute; opacity: 0; width: 0; }
.type-toggle span { padding: 8px 20px; font-size: 0.95rem; }
.type-toggle input:checked + span { background: var(--accent); color: #fff; }
.type-toggle input[value="income"]:checked + span { background: var(--plus); }
.type-toggle input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: -2px; }
form.is-income button[type="submit"] { background: var(--plus); }
.summary { grid-template-columns: repeat(4, 1fr); }
.big.plus { color: var(--plus); }
.big.minus { color: var(--minus); }
.income-row td.num { color: var(--plus); font-weight: 600; }

/* ===== サブスク ===== */
.sub-summary { display: grid; grid-template-columns: repeat(3, 1fr); text-align: center; margin-bottom: 12px; }
.sub-summary .label { display: block; font-size: 0.8rem; color: var(--muted); }
.sub-summary .big { font-size: 1.3rem; font-weight: 700; font-variant-numeric: tabular-nums; }
tr.due-soon td:nth-child(3) { color: #b45309; font-weight: 600; }
.switch { flex-direction: row; align-items: center; gap: 4px; font-size: 0.8rem; white-space: nowrap; }
.switch input { width: auto; }
.sub-add { margin-top: 12px; }
.sub-add summary { cursor: pointer; color: var(--accent); font-weight: 600; padding: 4px 0; }
.sub-add form { margin-top: 12px; }
label.check { flex-direction: row; align-items: center; gap: 6px; color: var(--text); }
label.check input { width: auto; }

@media (max-width: 600px) {
  .summary { grid-template-columns: 1fr 1fr; row-gap: 12px; }
  .sub-summary .big { font-size: 1.05rem; }
  .switch { font-size: 0; gap: 0; } /* スマホではチェックボックスだけ表示 */
}
td.num, td button, th { white-space: nowrap; }
.days-left { display: block; font-size: 0.75rem; color: var(--muted); }
tr.due-soon .days-left { color: #b45309; }
label.wide, .wide { grid-column: 1 / -1; }
.preset-note { margin: 0; color: #b45309; }