:root {
  --bg: #f3f6fb;
  --surface: #ffffff;
  --card-home: #f7fbff;
  --card-transactions: #fffaf7;
  --card-budgets: #fffbf4;
  --card-balances: #f7fbfa;
  --card-categories: #f8fcf8;
  --card-settings: #f8f9ff;
  --panel-home: #edf6ff;
  --panel-transactions: #fff1e8;
  --panel-budgets: #fff5df;
  --panel-balances: #ecf8f4;
  --panel-categories: #edf8ee;
  --panel-settings: #eef1ff;
  --text: #0f172a;
  --muted: #475569;
  --border: #dbe3ef;
  --primary: #2563eb;
  --primary-soft: #dbeafe;
  --danger: #dc2626;
  --danger-soft: #fee2e2;
  --success: #15803d;
  --success-soft: #dcfce7;
  --shadow: 0 10px 25px rgba(15, 23, 42, 0.08);
  --radius: 20px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
html, body {
  margin: 0;
  min-height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}
body { padding: calc(20px + env(safe-area-inset-top)) 14px calc(100px + env(safe-area-inset-bottom)); overscroll-behavior-y: contain; }
button, input, select { font: inherit; -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; border: none; }

.app-shell { max-width: 780px; margin: 0 auto; }
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 18px;
}
.topbar h1 { margin: 4px 0 0; font-size: 1.9rem; }
.eyebrow { margin: 0; font-size: 0.9rem; color: var(--muted); }
.container { display: grid; gap: 16px; }
.with-bottom-nav { padding-bottom: calc(12px + env(safe-area-inset-bottom)); }
.tab-panel { display: none; gap: 16px; }
.tab-panel.active { display: grid; }

.card {
  background: #fcfdff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
}

#panel-home > .card { background: var(--card-home); border-color: #d8e7fb; }
#panel-home .summary-grid article,
#panel-home .compact-budget-list .budget-item,
#panel-home .empty-state { background: var(--panel-home); }

#panel-transactions > .card { background: var(--card-transactions); border-color: #f3ddd0; }
#panel-transactions .transaction-item,
#panel-transactions .empty-state,
#panel-transactions .conversion-box { background: var(--panel-transactions); }

#panel-budgets > .card { background: var(--card-budgets); border-color: #f2dfbf; }
#panel-budgets .summary-grid article,
#panel-budgets .budget-item,
#panel-budgets .empty-state,
#panel-budgets .info-box { background: var(--panel-budgets); }

#panel-balances > .card { background: var(--card-balances); border-color: #d7eadf; }
#panel-balances .summary-grid article,
#panel-balances .carryover-note,
#panel-balances .checkbox-row,
#panel-balances .info-box { background: var(--panel-balances); }

#panel-categories > .card { background: var(--card-categories); border-color: #d9ead9; }
#panel-categories .category-item,
#panel-categories .empty-state { background: var(--panel-categories); }

#panel-settings > .card { background: var(--card-settings); border-color: #dde2ff; }
#panel-settings .settings-item,
#panel-settings .info-box,
#panel-settings .backup-status,
#panel-settings .empty-state { background: var(--panel-settings); }

.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.section-heading h2 { margin: 0; font-size: 1.15rem; }
.summary-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
}
.summary-grid article {
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 14px;
  min-width: 0;
}

.summary-grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.summary-grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.summary-grid-home,
.balance-top-grid,
.balance-middle-grid {
  margin-top: 2px;
}

.balance-middle-grid,
.balance-carryover-note {
  margin-top: 12px;
}

.compact-budget-list .budget-actions {
  display: none;
}

.compact-budget-list .budget-item {
  background: #f8fafc;
}
.label { margin: 0 0 6px; font-size: 0.9rem; color: var(--muted); }
.amount {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  overflow-wrap: anywhere;
  word-break: break-word;
  min-width: 0;
  font-variant-numeric: tabular-nums;
}
.income { color: var(--success); }
.expense { color: var(--danger); }

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.form-grid label { display: flex; flex-direction: column; gap: 8px; }

.date-field {
  grid-column: 1 / -1;
  min-width: 0;
}
.date-field #dateInput {
  display: block;
  inline-size: 100%;
  width: 100%;
  max-inline-size: 100%;
  max-width: 100%;
  min-width: 0;
  -webkit-min-logical-width: 0;
  -webkit-appearance: none;
  appearance: none;
}
.form-grid span { font-size: 0.92rem; color: var(--muted); }
.full-width { grid-column: 1 / -1; }
input, select {
  width: 100%;
  min-height: 48px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: #fff;
  padding: 0 14px;
}

.form-grid > * { min-width: 0; }
.form-grid label { min-width: 0; }
.form-grid input,
.form-grid select { min-width: 0; }
#dateInput {
  min-width: 0;
  max-width: 100%;
  width: 100%;
  color: var(--text);
  -webkit-text-fill-color: var(--text);
  text-align: center;
}
#dateInput::-webkit-date-and-time-value {
  text-align: center;
  color: var(--text);
  -webkit-text-fill-color: var(--text);
}
#dateInput::-webkit-datetime-edit,
#dateInput::-webkit-datetime-edit-fields-wrapper,
#dateInput::-webkit-datetime-edit-text,
#dateInput::-webkit-datetime-edit-month-field,
#dateInput::-webkit-datetime-edit-day-field,
#dateInput::-webkit-datetime-edit-year-field {
  color: var(--text);
  -webkit-text-fill-color: var(--text);
}
#dateInput::-webkit-calendar-picker-indicator {
  margin: 0;
}
input:focus, select:focus, button:focus {
  outline: 3px solid rgba(37, 99, 235, 0.15);
  outline-offset: 1px;
}
input[type="checkbox"] {
  width: 20px;
  min-height: 20px;
  padding: 0;
}
.checkbox-row {
  display: flex !important;
  flex-direction: row !important;
  align-items: center;
  gap: 10px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #f8fafc;
}
.checkbox-row span { color: var(--text); }
.conversion-box,
.info-box,
.carryover-note {
  border-radius: 16px;
  border: 1px dashed var(--border);
  background: #f8fafc;
  padding: 14px;
}
.conversion-value,
.info-value,
.carryover-value {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.2;
  overflow-wrap: anywhere;
  word-break: break-word;
  font-variant-numeric: tabular-nums;
}
.small-text { font-size: 0.95rem; }
.button-row { display: flex; gap: 10px; flex-wrap: wrap; }
.primary-button {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  min-height: 46px;
  border-radius: 14px;
  padding: 0 16px;
}
.secondary-button, .ghost-button {
  background: #eef2ff;
  color: #1e3a8a;
  min-height: 46px;
  border-radius: 14px;
  padding: 0 16px;
}
.danger-button {
  background: var(--danger-soft);
  color: var(--danger);
  min-height: 46px;
  border-radius: 14px;
  padding: 0 16px;
}
.small-button { min-height: 38px; padding: 0 12px; }
.muted-text { margin: 0; color: var(--muted); font-size: 0.92rem; }
.empty-state {
  border: 1px dashed var(--border);
  background: #f8fafc;
  color: var(--muted);
  border-radius: 16px;
  padding: 18px;
  text-align: center;
}
.transaction-list, .category-list, .budget-list { display: grid; gap: 12px; }
.transaction-item, .category-item, .budget-item {
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 14px;
  background: #fff;
}
.transaction-main {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 14px;
}
.transaction-date, .transaction-category, .transaction-note, .transaction-original, .transaction-base,
.category-name, .category-meta, .budget-name, .budget-meta, .progress-caption { margin: 0; }
.transaction-date { font-size: 0.88rem; color: var(--muted); }
.transaction-category, .category-name, .budget-name { margin-top: 4px; font-size: 1rem; font-weight: 700; }
.transaction-note, .category-meta, .budget-meta, .progress-caption { margin-top: 4px; color: var(--muted); font-size: 0.92rem; }
.transaction-footer, .category-actions, .budget-actions, .budget-header {
  margin-top: 12px;
  display: flex;
  gap: 10px;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}
.budget-header { margin-top: 0; }
.transaction-type-badge {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 10px;
  border-radius: 999px;
  font-size: 0.86rem;
  font-weight: 700;
}
.badge-income { background: var(--success-soft); color: var(--success); }
.badge-expense { background: var(--danger-soft); color: var(--danger); }
.segmented-control {
  display: inline-flex;
  background: #eef2ff;
  border-radius: 999px;
  padding: 4px;
  gap: 4px;
}
.segment-button {
  min-height: 36px;
  padding: 0 14px;
  border-radius: 999px;
  background: transparent;
  color: #1e3a8a;
}
.segment-button.active { background: #fff; box-shadow: var(--shadow); }

.progress-block {
  margin-top: 12px;
}
.progress-track {
  width: 100%;
  height: 12px;
  border-radius: 999px;
  background: #e5eefc;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  width: 0%;
  background: var(--primary);
  border-radius: 999px;
  transition: width 0.2s ease;
}
.progress-fill.over {
  background: var(--danger);
}
.budget-item.over-budget {
  border-color: rgba(220, 38, 38, 0.25);
  background: #fff8f8;
}

.bottom-nav {
  position: fixed;
  left: 50%;
  bottom: calc(10px + env(safe-area-inset-bottom));
  transform: translateX(-50%);
  width: min(780px, calc(100% - 20px));
  display: grid;
  gap: 8px;
  background: rgba(255,255,255,0.95);
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow);
  padding: 10px;
  backdrop-filter: blur(10px);
}
.bottom-nav-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.bottom-nav-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.nav-button {
  min-height: 48px;
  border-radius: 16px;
  background: transparent;
  color: var(--muted);
  font-weight: 700;
}
.nav-button.active {
  background: var(--primary);
  color: #fff;
}


.settings-form {
  display: grid;
  gap: 18px;
}
.settings-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.settings-column {
  display: grid;
  gap: 12px;
}
.settings-column-heading h3 {
  margin: 0;
  font-size: 1rem;
}
.settings-list {
  display: grid;
  gap: 10px;
}
.settings-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #f8fafc;
}
.settings-item-label {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}
.settings-item-title {
  margin: 0;
  font-weight: 700;
}
.settings-item-note {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}
.settings-rate-input {
  max-width: 180px;
  text-align: right;
}
.settings-warning {
  margin-top: 14px;
}
.settings-warning .info-value {
  font-size: 1rem;
  font-weight: 600;
}

@media (max-width: 640px) {
  body { padding: calc(14px + env(safe-area-inset-top)) 10px calc(96px + env(safe-area-inset-bottom)); }
  .form-grid { grid-template-columns: 1fr; }
  .settings-grid { grid-template-columns: 1fr; }
  .summary-grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
  .summary-grid-2 { gap: 8px; }
  .summary-grid article { padding: 12px 10px; }
  .amount { font-size: 0.95rem; }
  .label { font-size: 0.78rem; }
  .settings-item { align-items: stretch; flex-direction: column; }
  .settings-rate-input { max-width: none; text-align: left; }
  .topbar { align-items: stretch; }
  .topbar h1 { font-size: 1.6rem; }

  #dateInput {
    font-size: 16px;
    padding-left: 12px;
    padding-right: 10px;
    inline-size: 100%;
    width: 100%;
    max-inline-size: 100%;
    max-width: 100%;
  }
  .bottom-nav-5 {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 6px;
    padding: 8px;
  }
  .bottom-nav-6 {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 6px;
    padding: 8px;
  }
  .nav-button {
    min-height: 44px;
    font-size: 0.84rem;
    padding: 0 4px;
  }
}


.edit-notice {
  border-style: solid;
  background: #eff6ff;
}

.transaction-item.editing {
  border-color: #93c5fd;
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.12);
}


.backup-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.backup-column {
  display: grid;
  gap: 12px;
}
.backup-button-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
.backup-status {
  margin-top: 16px;
}
.backup-status.success {
  border-style: solid;
  background: #ecfdf5;
}
.backup-status.error {
  border-style: solid;
  background: #fef2f2;
}
.backup-status.info {
  border-style: solid;
  background: #eff6ff;
}
@media (max-width: 640px) {
  .backup-grid,
  .backup-button-grid {
    grid-template-columns: 1fr;
  }
}


@media (max-width: 430px) {
  .summary-grid-3 {
    gap: 6px;
  }

  .summary-grid article {
    padding: 10px 8px;
    border-radius: 14px;
  }

  .amount {
    font-size: 0.82rem;
  }

  .conversion-value,
  .info-value,
  .carryover-value {
    font-size: 1rem;
  }

  .label {
    font-size: 0.74rem;
    line-height: 1.25;
  }

  #dateInput {
    padding-left: 10px;
    padding-right: 8px;
    inline-size: 100%;
    width: 100%;
    max-inline-size: 100%;
    max-width: 100%;
  }
}