:root {
  --bg: #f7f2e8;
  --card: #ffffff;
  --ink: #1f1d1a;
  --muted: #6b6257;
  --accent: #0c7c59;
  --accent-2: #b84b3f;
  --line: #e4d9c8;
  --shadow: rgba(0, 0, 0, 0.08);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Noto Sans JP", "Yu Gothic", sans-serif;
  background: radial-gradient(800px 400px at 20% 0%, #fff7e5, transparent),
              radial-gradient(600px 600px at 100% 30%, #f0e5d5, transparent),
              var(--bg);
  color: var(--ink);
}

.app {
  max-width: 520px;
  margin: 0 auto;
  padding-bottom: 24px;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: linear-gradient(90deg, #fef5e6, #f2e3cf);
  border-bottom: 1px solid var(--line);
  padding: 12px 16px 10px;
}

.month-switch {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.month-switch button {
  border: none;
  background: #fff;
  box-shadow: 0 2px 8px var(--shadow);
  padding: 6px 10px;
  border-radius: 10px;
  font-size: 16px;
}

.month-label {
  font-weight: 700;
  font-size: 18px;
}

.mode-switch {
  margin-top: 10px;
  display: flex;
  gap: 8px;
}

.mode-switch button {
  flex: 1;
  border: 1px solid var(--line);
  background: #fff;
  padding: 8px;
  border-radius: 10px;
}

.mode-switch button.active {
  background: #1f1d1a;
  color: #fff;
  border-color: #1f1d1a;
}

.setup {
  padding: 16px;
}

.setup.hidden {
  display: none;
}

.setup-card {
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: 0 4px 14px var(--shadow);
  border-radius: 14px;
  padding: 14px;
}

.setup-title {
  font-weight: 700;
}

.setup-desc {
  color: var(--muted);
  font-size: 12px;
  margin: 6px 0 10px;
}

.setup input {
  width: 100%;
  border: 1px solid var(--line);
  padding: 10px 12px;
  border-radius: 10px;
  margin-bottom: 8px;
}

.setup button {
  width: 100%;
  border: none;
  background: #1f1d1a;
  color: #fff;
  padding: 10px;
  border-radius: 10px;
}

.summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  padding: 12px 16px;
}

.sum-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px;
  text-align: center;
  box-shadow: 0 2px 8px var(--shadow);
}

.sum-label {
  font-size: 12px;
  color: var(--muted);
}

.sum-value {
  margin-top: 6px;
  font-size: 16px;
  font-weight: 700;
}

.income { color: var(--accent); }
.expense { color: var(--accent-2); }
.balance { color: var(--ink); }

.list-container {
  padding: 0 12px;
  display: grid;
  gap: 10px;
}

.record {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px;
  box-shadow: 0 2px 10px var(--shadow);
}

.record-row1 {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-weight: 700;
}

.record-row2,
.record-row3 {
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
}

.calendar-view {
  padding: 12px;
}

.hidden { display: none; }

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
}

.calendar-cell {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 6px;
  min-height: 60px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  box-shadow: 0 2px 8px var(--shadow);
}

.calendar-head {
  font-size: 11px;
  color: var(--muted);
  text-align: center;
}

.calendar-date {
  font-weight: 700;
  font-size: 12px;
}

.calendar-diff {
  font-size: 11px;
}

.day-details {
  margin-top: 14px;
}

.day-title {
  font-weight: 700;
  margin-bottom: 8px;
}

.day-list {
  display: grid;
  gap: 8px;
}

@media (min-width: 600px) {
  .summary { grid-template-columns: repeat(3, 1fr); }
}