/* ===========================
   CSS Variables & Reset
=========================== */
:root {
  --accent:       #2d6a4f;
  --accent-dark:  #1b4332;
  --accent-light: #d8f3dc;
  --income-color: #2d6a4f;
  --expense-color:#d62828;
  --balance-color:#023e8a;
  --bg:           #f4f6f4;
  --card-bg:      #ffffff;
  --border:       #dee2e6;
  --text:         #212529;
  --muted:        #6c757d;
  --radius:       8px;
  --shadow:       0 1px 4px rgba(0,0,0,0.10);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

/* ===========================
   Header / Topbar
=========================== */
.topbar {
  background: var(--accent-dark);
  color: #fff;
  padding: 1.25rem 1rem;
}

.topbar-inner {
  max-width: 720px;
  margin: 0 auto;
}

.topbar h1 {
  font-size: 1.25rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.badge {
  font-size: 0.7rem;
  background: #52b788;
  color: #fff;
  padding: 0.1em 0.55em;
  border-radius: 20px;
  font-weight: 600;
  vertical-align: middle;
  white-space: nowrap;
}

.subtitle {
  font-size: 0.875rem;
  opacity: 0.85;
  margin-top: 0.25rem;
}

/* ===========================
   Main Layout
=========================== */
main {
  max-width: 720px;
  margin: 0 auto;
  padding: 1rem;
}

/* ===========================
   Ad Units
=========================== */
.ad-unit {
  min-height: 90px;
  background: #e9ecef;
  margin: 1.25rem 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #adb5bd;
  font-size: 0.75rem;
  border-radius: var(--radius);
  border: 1px dashed #ced4da;
}

/* ===========================
   Summary Section
=========================== */
.summary-section {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  margin-bottom: 1rem;
}

.month-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.month-label {
  font-size: 1.1rem;
  font-weight: 700;
  min-width: 110px;
  text-align: center;
}

.btn-nav {
  background: none;
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  min-height: 44px;
  min-width: 44px;
  font-size: 1.3rem;
  color: var(--accent-dark);
  cursor: pointer;
  touch-action: manipulation;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
}

.btn-nav:hover {
  background: var(--accent-light);
}

.summary-cards {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.75rem;
}

.summary-card {
  border-radius: var(--radius);
  padding: 0.85rem 0.5rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.summary-card.income  { background: #d8f3dc; }
.summary-card.expense { background: #fde8e8; }
.summary-card.balance { background: #dbeafe; }

.card-label {
  font-size: 0.75rem;
  color: var(--muted);
  font-weight: 600;
}

.card-amount {
  font-size: 1.05rem;
  font-weight: 700;
}

.summary-card.income  .card-amount { color: var(--income-color); }
.summary-card.expense .card-amount { color: var(--expense-color); }
.summary-card.balance .card-amount { color: var(--balance-color); }

/* ===========================
   Tool Section (Form)
=========================== */
.tool-section {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  margin-bottom: 1rem;
}

.tool-section h2,
.chart-section h2,
.list-section h2,
.howto-section h2 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--accent-dark);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  margin-bottom: 0.75rem;
}

label {
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
  color: var(--text);
}

input[type="date"],
input[type="number"],
input[type="text"],
select {
  width: 100%;
  padding: 0.6rem 0.75rem;
  font-size: 1rem;     /* iOSオートズーム防止 */
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  color: var(--text);
  appearance: none;
  -webkit-appearance: none;
  transition: border-color 0.15s;
}

input:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(45,106,79,0.15);
}

.form-error {
  color: var(--expense-color);
  font-size: 0.85rem;
  margin-top: 0.25rem;
  min-height: 1.2em;
}

.btn-primary {
  display: block;
  width: 100%;
  margin-top: 0.75rem;
  padding: 0.8rem;
  font-size: 1rem;
  font-weight: 700;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  min-height: 44px;
  touch-action: manipulation;
  transition: background 0.2s;
}

.btn-primary:hover {
  background: var(--accent-dark);
}

/* ===========================
   Chart Section
=========================== */
.chart-section {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  margin-bottom: 1rem;
}

.chart-wrapper {
  position: relative;
  max-width: 300px;
  margin: 0 auto;
}

.chart-empty {
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  padding: 2rem 0;
}

/* ===========================
   List Section
=========================== */
.list-section {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  margin-bottom: 1rem;
}

.list-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.list-header h2 {
  margin-bottom: 0;
}

.btn-secondary {
  padding: 0.45rem 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  background: #fff;
  color: var(--accent-dark);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  cursor: pointer;
  min-height: 44px;
  touch-action: manipulation;
  transition: background 0.15s;
}

.btn-secondary:hover {
  background: var(--accent-light);
}

.entries-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.list-empty {
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  padding: 1.5rem 0;
}

/* 各エントリ行 */
.entry-item {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 0.5rem 0.75rem;
  padding: 0.65rem 0.75rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: #fafafa;
  font-size: 0.9rem;
}

.entry-item.income  { border-left: 3px solid var(--income-color); }
.entry-item.expense { border-left: 3px solid var(--expense-color); }

.entry-date {
  color: var(--muted);
  font-size: 0.8rem;
  white-space: nowrap;
}

.entry-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.entry-category {
  font-weight: 600;
  font-size: 0.875rem;
}

.entry-memo {
  color: var(--muted);
  font-size: 0.8rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.entry-amount {
  font-weight: 700;
  white-space: nowrap;
}

.entry-item.income  .entry-amount { color: var(--income-color); }
.entry-item.expense .entry-amount { color: var(--expense-color); }

.btn-delete {
  background: none;
  border: none;
  color: #adb5bd;
  cursor: pointer;
  font-size: 1rem;
  padding: 0.25rem 0.35rem;
  min-height: 44px;
  min-width: 44px;
  touch-action: manipulation;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.15s, background 0.15s;
}

.btn-delete:hover {
  color: var(--expense-color);
  background: #fde8e8;
}

/* ===========================
   How-to Section
=========================== */
.howto-section {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  margin-bottom: 1rem;
}

.howto-section h2 {
  margin-top: 1.25rem;
}

.howto-section h2:first-child {
  margin-top: 0;
}

.howto-section ol,
.howto-section p {
  font-size: 0.9rem;
  color: #555;
  line-height: 1.7;
}

.howto-section ol {
  padding-left: 1.4rem;
}

.howto-section li {
  margin-bottom: 0.5rem;
}

.affiliate-block {
  margin: 1rem 0 1.5rem;
  padding: 1rem;
  background: #f9f9f9;
  border-radius: 8px;
  border: 1px solid #e0e0e0;
  text-align: center;
}

.affiliate-label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  color: #fff;
  background: #999;
  padding: 1px 6px;
  border-radius: 3px;
  margin-bottom: 0.5rem;
}

.affiliate-desc {
  font-size: 0.85rem;
  color: #555;
  margin-bottom: 0.75rem;
}

/* ===========================
   Footer
=========================== */
footer {
  text-align: center;
  padding: 2rem 1rem;
  font-size: 0.85rem;
  color: var(--muted);
}

footer a {
  color: #555;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

footer p + p {
  margin-top: 0.5rem;
}

/* ===========================
   Responsive — 640px+
=========================== */
@media (min-width: 640px) {
  .topbar h1 {
    font-size: 1.6rem;
  }

  main {
    padding: 1.5rem 2rem;
  }

  .summary-card {
    padding: 1rem 0.75rem;
  }

  .card-amount {
    font-size: 1.2rem;
  }

  .entry-item {
    font-size: 0.95rem;
  }
}

/* ===========================
   Responsive — max 480px
=========================== */
@media (max-width: 480px) {
  .form-row {
    grid-template-columns: 1fr;
  }

  .summary-cards {
    grid-template-columns: 1fr;
  }

  .entry-item {
    grid-template-columns: auto 1fr auto;
    grid-template-rows: auto auto;
  }

  .btn-delete {
    grid-row: 1 / 3;
    grid-column: 3;
  }

  .entry-date {
    grid-column: 1;
    grid-row: 1;
  }

  .entry-info {
    grid-column: 2;
    grid-row: 1 / 3;
  }

  .entry-amount {
    grid-column: 1;
    grid-row: 2;
    font-size: 0.95rem;
  }
}