/* P0 最小樣式：手機優先，之後的階段再擴充。 */
:root {
  --bg: #ffffff;
  --fg: #1f2328;
  --muted: #59636e;
  --border: #d1d9e0;
  --accent: #0b6bcb;
  --danger-bg: #fdecea;
  --danger-fg: #a4281c;
  --ok-bg: #e6f4ea;
  --ok-fg: #1e6b34;
  --warn-bg: #fff4d6;
  --warn-fg: #7a5200;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15181c;
    --fg: #e6e9ec;
    --muted: #9aa4ae;
    --border: #3a4149;
    --accent: #4c9bf0;
    --danger-bg: #3d1f1c;
    --danger-fg: #ffb4a9;
    --ok-bg: #173523;
    --ok-fg: #9fdcb0;
    --warn-bg: #3a2f12;
    --warn-fg: #f3d27a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", "Noto Sans TC", sans-serif;
}

.container { max-width: 28rem; margin: 0 auto; padding: 1.5rem 1rem; }

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

input, select, button { font: inherit; width: 100%; padding: 0.75rem; border-radius: 0.5rem; }
input, select { border: 1px solid var(--border); background: var(--bg); color: var(--fg); }

button { border: 0; background: var(--accent); color: #fff; margin-top: 0.5rem; cursor: pointer; }
button.secondary { background: transparent; color: var(--accent); border: 1px solid var(--border); }

.alert { padding: 0.75rem; border-radius: 0.5rem; background: var(--danger-bg); color: var(--danger-fg); }

/* P2 記帳表單 */
.alert ul { margin: 0; padding-left: 1.25rem; }
input[aria-invalid="true"], select[aria-invalid="true"] { border-color: var(--danger-fg); }
.field-error { margin: 0; color: var(--danger-fg); font-size: 0.875rem; }
.amount { font-size: 1.5rem; font-variant-numeric: tabular-nums; }
.actions { display: flex; flex-direction: column; gap: 0.5rem; }
button:disabled { opacity: 0.6; cursor: wait; }
.notice { margin: 0 0 0.5rem; padding: 0.75rem; border-radius: 0.5rem; }
.notice-ok { background: var(--ok-bg); color: var(--ok-fg); }
.notice-warn { background: var(--warn-bg); color: var(--warn-fg); }
.confirm { padding: 1rem; border: 1px solid var(--border); border-radius: 0.5rem; }
.confirm h2 { margin-top: 0; font-size: 1.125rem; }
.voucher { border: 1px solid var(--border); border-radius: 0.5rem; padding: 0.5rem 0.75rem; }
.voucher summary { cursor: pointer; padding: 0.25rem 0; }
.voucher[open] summary { margin-bottom: 0.5rem; }
.checkbox { display: flex; align-items: center; gap: 0.5rem; }
.checkbox input { width: 1.25rem; height: 1.25rem; padding: 0; margin: 0; }

/* P2 Step 3 交易列表 */
.page-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; }
.page-head a, .pager a, .empty a { color: var(--accent); }
.muted { color: var(--muted); }
.date-range { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; }
.date-range > * { min-width: 0; }
.date-range input { min-width: 0; }
.htmx-indicator { margin: 0.5rem 0; }
#txn-list.htmx-request .txn-results { opacity: 0.5; }
.txn-summary { margin: 1rem 0 0.5rem; font-weight: 600; font-variant-numeric: tabular-nums; }
.txn-rows { list-style: none; margin: 0; padding: 0; }
.txn-row { padding: 0.625rem 0; border-bottom: 1px solid var(--border); min-width: 0; }
.txn-line { display: flex; align-items: center; gap: 0.5rem; min-width: 0; }
.txn-date { color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; }
.badge { flex: none; font-size: 0.75rem; padding: 0.125rem 0.5rem; border: 1px solid var(--border); border-radius: 999px; white-space: nowrap; }
.txn-amount { margin-left: auto; font-variant-numeric: tabular-nums; white-space: nowrap; }
.txn-text { margin-top: 0.125rem; font-size: 0.875rem; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.txn-merchant { color: var(--fg); }
.pager { display: flex; justify-content: space-between; align-items: center; margin: 1rem 0; }
.empty { color: var(--muted); margin: 1rem 0; }

/* P2 Step 4A 交易明細、修改、刪除、還原 */
.txn-link { display: block; color: inherit; text-decoration: none; min-width: 0; }
.button-link { display: block; text-align: center; padding: 0.75rem; border-radius: 0.5rem; border: 1px solid var(--border); color: var(--accent); text-decoration: none; }
.button-link.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.detail { display: grid; grid-template-columns: auto 1fr; gap: 0.5rem 1rem; margin: 1rem 0; }
.detail dt { color: var(--muted); }
.detail dd { margin: 0; min-width: 0; overflow-wrap: anywhere; }
.num { font-variant-numeric: tabular-nums; }
.section-title { font-size: 1rem; margin: 1rem 0 0.25rem; }
.posting-lines { list-style: none; margin: 0 0 1rem; padding: 0; }
.posting-line { display: flex; justify-content: space-between; gap: 0.5rem; padding: 0.5rem 0; border-bottom: 1px solid var(--border); }
.posting-account { min-width: 0; overflow-wrap: anywhere; }
.posting-account .badge { margin-left: 0.5rem; }
.posting-effect { white-space: nowrap; font-variant-numeric: tabular-nums; }
.danger-zone { border: 1px solid var(--border); border-radius: 0.5rem; padding: 0.5rem 0.75rem; }
.danger-zone summary { cursor: pointer; color: var(--danger-fg); }
button.danger { background: var(--danger-fg); }

/* P2 Step 4B 異動紀錄、已刪除列表 */
.head-links { display: flex; gap: 1rem; white-space: nowrap; }
.head-links a { color: var(--accent); }
.history { margin-top: 1.5rem; border: 1px solid var(--border); border-radius: 0.5rem; padding: 0.5rem 0.75rem; }
.history summary { cursor: pointer; }
.history-list { list-style: none; margin: 0.5rem 0 0; padding: 0; }
.history-entry { padding: 0.5rem 0; border-top: 1px solid var(--border); }
.history-head { display: flex; justify-content: space-between; gap: 0.5rem; flex-wrap: wrap; }
.history-label { font-weight: 600; }
.history-changes { margin: 0.25rem 0 0; padding-left: 1.25rem; font-size: 0.875rem; overflow-wrap: anywhere; }
.deleted-at { color: var(--danger-fg); }

/* P2 Step 5A 記帳類型切換 */
.type-tabs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.25rem; margin: 0 0 1rem; padding: 0.25rem; border: 1px solid var(--border); border-radius: 0.5rem; }
.type-tabs a { text-align: center; padding: 0.5rem; border-radius: 0.375rem; color: var(--fg); text-decoration: none; }
.type-tabs a.active { background: var(--accent); color: #fff; }
.tag-list { display: flex; flex-wrap: wrap; gap: 0.25rem; }

/* P2 Step 9 商家別名 */
.merchant-list { list-style: none; margin: 1rem 0 0; padding: 0; }
.merchant-item { padding: 0.75rem 0; border-top: 1px solid var(--border); }
.merchant-head { display: flex; align-items: center; gap: 0.5rem; }
.merchant-name { font-size: 1rem; margin: 0; min-width: 0; overflow-wrap: anywhere; }
.merchant-item[data-inactive] .merchant-name { color: var(--muted); }
.alias-list { list-style: none; margin: 0.5rem 0; padding: 0; display: flex; flex-direction: column; gap: 0.25rem; }
.alias-delete summary { display: flex; justify-content: space-between; gap: 0.5rem; cursor: pointer; padding: 0.375rem 0; list-style: none; }
.alias-delete summary::-webkit-details-marker { display: none; }
.alias-text { min-width: 0; overflow-wrap: anywhere; }
.alias-action { flex: none; color: var(--danger-fg); font-size: 0.875rem; }
.alias-delete[open] { border: 1px solid var(--border); border-radius: 0.5rem; padding: 0 0.75rem 0.5rem; }
.alias-add-row { display: flex; gap: 0.5rem; align-items: stretch; }
.alias-add-row input { flex: 1; min-width: 0; }
.alias-add-row button { width: auto; flex: none; margin-top: 0; }

/* P2 Step 10 連續補記：本次已記 */
.txn-run { margin-top: 1.5rem; padding-top: 0.75rem; border-top: 1px solid var(--border); }
.txn-run h2 { font-size: 1rem; margin: 0 0 0.25rem; }
.txn-row.is-deleted .txn-link { color: var(--muted); }
.txn-row.is-deleted .txn-amount { text-decoration: line-through; }

/* P2 Step 11 首頁入口 */
.home-actions { display: grid; gap: 0.75rem; margin: 1.5rem 0; }
.home-actions .primary { padding: 1.25rem; font-size: 1.25rem; }

/* P3-1 首頁：帳戶餘額、系統狀態 */
.home-section { margin: 1.25rem 0; }
.home-balances { list-style: none; margin: 0; padding: 0; }
.home-balance { display: flex; align-items: baseline; justify-content: space-between; gap: 0.75rem; padding: 0.5rem 0; border-bottom: 1px solid var(--border); min-width: 0; }
.home-balance-name { min-width: 0; overflow-wrap: anywhere; }
.home-balance-amount { flex: none; white-space: nowrap; }
.home-status-line { margin: 0; font-size: 0.875rem; }
.home-alert-title { margin: 0 0 0.5rem; font-weight: 600; }
.alert a { color: inherit; }

/* P3-2B 首頁信用卡區塊、設定頁 */
.home-cards { list-style: none; margin: 0; padding: 0; }
.home-card { padding: 0.5rem 0; border-bottom: 1px solid var(--border); min-width: 0; }
.home-card-name { font-weight: 600; overflow-wrap: anywhere; }
.home-card-line { margin: 0.25rem 0 0; overflow-wrap: anywhere; }
.home-card-line a { color: var(--accent); }
.home-card-amount { font-size: 1.25rem; font-weight: 600; }
.home-card-overdue { margin: 0.5rem 0 0; }
.home-card-note { margin: 0.5rem 0 0; font-size: 0.875rem; }
.settings-card { margin: 1rem 0; padding-top: 0.75rem; border-top: 1px solid var(--border); }
.settings-card-name { font-size: 1rem; margin: 0 0 0.5rem; overflow-wrap: anywhere; }

/* P3-3B 預算進度卡（/budgets 與首頁共用）：顏色用現有的 warn／danger token，文字標籤補足不靠顏色 */
.budget-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.5rem; }
.budget-card { padding: 0.5rem 0.75rem; border: 1px solid var(--border); border-radius: 0.5rem; min-width: 0; }
.budget-card[data-state="warn"] { background: var(--warn-bg); color: var(--warn-fg); border-color: transparent; }
.budget-card[data-state="over"], .budget-card[data-state="used_up"] { background: var(--danger-bg); color: var(--danger-fg); border-color: transparent; }
.budget-card-head { display: flex; align-items: baseline; justify-content: space-between; gap: 0.5rem; }
.budget-card-name { font-weight: 600; min-width: 0; overflow-wrap: anywhere; }
.budget-flag { border-color: currentColor; }
.budget-card-line { margin: 0.25rem 0 0; overflow-wrap: anywhere; }
.budget-current, .budget-scheduled { margin: 0.25rem 0 0; font-size: 0.875rem; }

/* 月報（P3-4）：文字與表格，不放圖表 */
.report-picker { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; margin: 0.75rem 0; }
.report-picker button { margin-top: 0; }
.report-nav { display: flex; justify-content: space-between; gap: 0.5rem; align-items: baseline; }
.report-nav a { color: var(--accent); }
.report-lines, .report-expenses, .report-children { list-style: none; margin: 0; padding: 0; }
.report-line { display: flex; justify-content: space-between; align-items: baseline; gap: 0.75rem; padding: 0.375rem 0; border-bottom: 1px solid var(--border); min-width: 0; }
.report-total { font-weight: 600; }
.report-note { font-size: 0.875rem; margin: 0.5rem 0 0; }
.report-expense { padding: 0.5rem 0; border-bottom: 1px solid var(--border); }
.report-expense-head { border-bottom: 0; font-weight: 600; padding-bottom: 0; }
.report-budget, .report-excluded { margin: 0.125rem 0; font-size: 0.875rem; }
.report-budget[data-state="warn"] { color: var(--warn-fg); }
.report-budget[data-state="over"], .report-budget[data-state="used_up"] { color: var(--danger-fg); }
.report-children { margin-left: 1rem; font-size: 0.9375rem; }
.report-children .report-line:last-child { border-bottom: 0; }
.report-table { width: 100%; border-collapse: collapse; }
.report-table th, .report-table td { padding: 0.375rem 0; border-bottom: 1px solid var(--border); text-align: left; font-weight: normal; }
.report-table th.num, .report-table td.num { text-align: right; }