/* ============================================================
   Family Balance — 家庭存款記帳工具
   Mobile-first, relaxed friendly palette, large tap targets.
   ============================================================ */
:root {
  --bg: #FAF7F2;
  --surface: #FFFFFF;
  --primary: #2FB67C;        /* mint green — deposit / confirm / WhatsApp */
  --primary-dark: #229160;
  --secondary: #F5A623;      /* warm amber — withdrawal */
  --accent: #4A90D9;         /* calm blue — transfer */
  --hero-start: #6FCF97;
  --hero-end: #4A90D9;
  --text: #2D2A26;
  --muted: #8A8276;
  --positive: #1F9D55;
  --negative: #E07A2F;
  --border: #ECE7DF;
  --bank-hangseng: #C8102E;
  --bank-boc: #D62828;
  --bank-antbank: #2F6FED;
  --danger: #D64545;
  --shadow: 0 2px 10px rgba(45,42,38,.06);
  --radius: 16px;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang HK", "Heiti TC", "Microsoft JhengHei", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 17px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

#app { max-width: 480px; margin: 0 auto; min-height: 100vh; padding-bottom: 96px; position: relative; }

/* Header */
.app-header {
  background: linear-gradient(135deg, var(--hero-start), var(--hero-end));
  color: #fff;
  padding: 18px 20px 20px;
  border-radius: 0 0 24px 24px;
  box-shadow: var(--shadow);
}
.app-header h1 { margin: 0; font-size: 20px; font-weight: 700; letter-spacing: .5px; }
.app-header .sub { font-size: 13px; opacity: .9; margin-top: 2px; }

/* Connection pill */
.conn-pill {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; padding: 4px 10px; border-radius: 999px;
  background: rgba(255,255,255,.22); margin-top: 8px;
}
.conn-pill .dot { width: 8px; height: 8px; border-radius: 50%; background: #ddd; }
.conn-pill.online .dot { background: #B6F5C8; box-shadow: 0 0 0 3px rgba(182,245,200,.3); }
.conn-pill.offline .dot { background: #FFD2A8; }

/* Views */
.view { display: none; padding: 16px; }
.view.active { display: block; animation: fade .25s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(6px);} to {opacity:1; transform:none;} }

/* Hero total card */
.hero-card {
  background: linear-gradient(135deg, var(--hero-start), var(--hero-end));
  color: #fff; border-radius: var(--radius); padding: 22px 20px;
  text-align: center; box-shadow: var(--shadow); margin-bottom: 14px;
}
.hero-card .label { font-size: 14px; opacity: .92; }
.hero-card .amount { font-size: 40px; font-weight: 800; margin: 4px 0; letter-spacing: .5px; }
.hero-card .interest-line { font-size: 14px; opacity: .95; margin-top: 4px; }

/* Mode toggle (segmented) */
.mode-toggle {
  display: flex; background: var(--surface); border-radius: 999px;
  padding: 5px; box-shadow: var(--shadow); margin-bottom: 16px;
}
.mode-toggle button {
  flex: 1; border: none; background: transparent; color: var(--muted);
  font-size: 16px; font-weight: 600; padding: 12px; border-radius: 999px;
  cursor: pointer; transition: .2s;
}
.mode-toggle button.active { background: var(--primary); color: #fff; box-shadow: 0 2px 6px rgba(47,182,124,.4); }

/* Bank cards */
.bank-card {
  background: var(--surface); border-radius: var(--radius); padding: 16px 16px 16px 20px;
  box-shadow: var(--shadow); margin-bottom: 12px; position: relative; overflow: hidden;
  border-left: 6px solid var(--muted);
}
.bank-card.hangseng { border-left-color: var(--bank-hangseng); }
.bank-card.boc { border-left-color: var(--bank-boc); }
.bank-card.antbank { border-left-color: var(--bank-antbank); }
.bank-card .name { font-size: 18px; font-weight: 700; }
.bank-card .balance { font-size: 28px; font-weight: 800; margin: 2px 0; }
.bank-card .badges { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 6px; }
.badge {
  font-size: 12px; padding: 3px 10px; border-radius: 999px;
  background: #F3EFE8; color: var(--muted); font-weight: 600;
}
.badge.rate { background: #E8F5EF; color: var(--positive); }
.bank-card .interest-sub { font-size: 14px; color: var(--positive); font-weight: 600; margin-top: 6px; }
.bank-card .pending-sub { font-size: 12px; color: var(--muted); margin-top: 2px; }

/* Buttons */
.btn {
  display: block; width: 100%; border: none; border-radius: 14px;
  font-size: 18px; font-weight: 700; padding: 16px; cursor: pointer;
  min-height: 56px; transition: .15s; color: #fff;
}
.btn:active { transform: scale(.98); }
.btn-primary { background: var(--primary); }
.btn-primary:active { background: var(--primary-dark); }
.btn-wa { background: #25D366; }
.btn-secondary { background: var(--surface); color: var(--text); box-shadow: var(--shadow); }
.btn-danger { background: var(--danger); }
.btn-ghost { background: transparent; color: var(--muted); box-shadow: none; font-weight: 600; }
.btn-sm { font-size: 15px; padding: 11px; min-height: 44px; }
.btn-row { display: flex; gap: 10px; }
.btn-row .btn { flex: 1; }

/* Sticky add button on dashboard */
.fab-wrap { position: fixed; bottom: 72px; left: 0; right: 0; max-width: 480px; margin: 0 auto; padding: 0 16px; z-index: 40; pointer-events: none; }
.fab-wrap .btn { pointer-events: auto; box-shadow: 0 6px 18px rgba(47,182,124,.45); }

/* Bottom tab bar */
.tabbar {
  position: fixed; bottom: 0; left: 0; right: 0; max-width: 480px; margin: 0 auto;
  display: flex; background: var(--surface); border-top: 1px solid var(--border);
  z-index: 50; box-shadow: 0 -2px 10px rgba(45,42,38,.05);
}
.tabbar button {
  flex: 1; border: none; background: none; padding: 8px 4px 10px; cursor: pointer;
  color: var(--muted); font-size: 11px; display: flex; flex-direction: column; align-items: center; gap: 2px;
}
.tabbar button .ico { font-size: 22px; }
.tabbar button.active { color: var(--primary); }

/* Forms */
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 14px; font-weight: 600; color: var(--muted); margin-bottom: 6px; }
.field input, .field select, .field textarea {
  width: 100%; border: 2px solid var(--border); border-radius: 12px;
  padding: 14px; font-size: 17px; background: var(--surface); color: var(--text);
  font-family: inherit;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--accent); }
.amount-input { position: relative; }
.amount-input .prefix { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); font-size: 17px; color: var(--muted); font-weight: 700; }
.amount-input input { padding-left: 48px; font-size: 22px; font-weight: 700; }

/* Type chooser */
.type-choices { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; margin-bottom: 18px; }
.type-choice {
  border: 2px solid var(--border); border-radius: 14px; background: var(--surface);
  padding: 14px 6px; text-align: center; cursor: pointer; font-weight: 700; font-size: 14px;
  transition: .15s; color: var(--text);
}
.type-choice .emoji { font-size: 26px; display: block; margin-bottom: 4px; }
.type-choice.active.in { border-color: var(--primary); background: #EAF8F1; }
.type-choice.active.out { border-color: var(--secondary); background: #FEF5E6; }
.type-choice.active.transfer { border-color: var(--accent); background: #EAF2FB; }

/* Bank selector buttons */
.bank-select { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; }
.bank-select button {
  border: 2px solid var(--border); border-radius: 12px; background: var(--surface);
  padding: 14px 4px; font-size: 15px; font-weight: 700; cursor: pointer; color: var(--text); min-height: 56px;
}
.bank-select button.active { border-color: var(--accent); background: #EAF2FB; }

/* Confirmation sentence */
.confirm-sentence {
  background: #F3EFE8; border-radius: 12px; padding: 14px; font-size: 15px;
  color: var(--text); margin-bottom: 16px; min-height: 20px; line-height: 1.5;
}
.confirm-sentence strong { color: var(--primary-dark); }

/* Section heading */
.section-title { font-size: 15px; font-weight: 700; color: var(--muted); margin: 18px 0 10px; }

/* Summary cards row */
.summary-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 14px; }
.summary-card { background: var(--surface); border-radius: 14px; padding: 14px; box-shadow: var(--shadow); }
.summary-card .label { font-size: 13px; color: var(--muted); }
.summary-card .value { font-size: 21px; font-weight: 800; margin-top: 2px; }
.summary-card.in .value { color: var(--positive); }
.summary-card.out .value { color: var(--negative); }
.summary-card.interest .value { color: var(--primary-dark); }

/* Range chips */
.chips { display: flex; gap: 8px; margin-bottom: 14px; flex-wrap: wrap; }
.chip {
  border: 2px solid var(--border); background: var(--surface); border-radius: 999px;
  padding: 8px 16px; font-size: 14px; font-weight: 600; cursor: pointer; color: var(--muted);
}
.chip.active { border-color: var(--primary); background: var(--primary); color: #fff; }

/* Monthly interest bars */
.month-row { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; font-size: 14px; }
.month-row .m { width: 70px; color: var(--muted); font-weight: 600; }
.month-row .bar-wrap { flex: 1; background: #F3EFE8; border-radius: 999px; height: 22px; overflow: hidden; }
.month-row .bar { height: 100%; background: linear-gradient(90deg, var(--hero-start), var(--hero-end)); border-radius: 999px; min-width: 2px; }
.month-row .v { width: 90px; text-align: right; font-weight: 700; }

/* Transaction / generic list */
.list { background: var(--surface); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.list-item { display: flex; align-items: center; padding: 14px 16px; border-bottom: 1px solid var(--border); gap: 12px; }
.list-item:last-child { border-bottom: none; }
.list-item .li-main { flex: 1; min-width: 0; }
.list-item .li-title { font-weight: 600; font-size: 15px; }
.list-item .li-sub { font-size: 12px; color: var(--muted); margin-top: 2px; }
.list-item .li-amt { font-weight: 800; font-size: 16px; white-space: nowrap; }
.li-amt.pos { color: var(--positive); }
.li-amt.neg { color: var(--negative); }
.li-amt.xfer { color: var(--accent); }
.li-del { background: none; border: none; color: var(--danger); font-size: 20px; cursor: pointer; padding: 4px 6px; }

/* Rate management */
.rate-block { background: var(--surface); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); margin-bottom: 14px; }
.rate-block .rb-head { display: flex; justify-content: space-between; align-items: baseline; }
.rate-block .rb-name { font-size: 17px; font-weight: 700; }
.rate-block .rb-cur { font-size: 22px; font-weight: 800; color: var(--positive); }
.payout-toggle { display: flex; gap: 8px; margin: 10px 0; }
.payout-toggle button { flex: 1; border: 2px solid var(--border); background: var(--surface); border-radius: 10px; padding: 10px; font-weight: 600; cursor: pointer; color: var(--muted); }
.payout-toggle button.active { border-color: var(--accent); background: #EAF2FB; color: var(--text); }
.rate-form { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; align-items: end; margin-top: 10px; }
.rate-history { margin-top: 12px; font-size: 13px; }
.rate-history .rh { display: flex; justify-content: space-between; padding: 6px 0; border-bottom: 1px dashed var(--border); color: var(--muted); }

/* Helper text & banners */
.helper { font-size: 12px; color: var(--muted); margin-top: 6px; line-height: 1.5; }
.banner { border-radius: 12px; padding: 12px 14px; font-size: 14px; margin-bottom: 14px; font-weight: 600; }
.banner.warn { background: #FDECEC; color: #B23A3A; }
.banner.info { background: #EAF2FB; color: #2C5A8A; }
.banner.ok { background: #EAF8F1; color: var(--primary-dark); }

/* Modal */
.modal-backdrop { position: fixed; inset: 0; background: rgba(45,42,38,.45); display: none; align-items: center; justify-content: center; z-index: 100; padding: 20px; }
.modal-backdrop.open { display: flex; }
.modal { background: var(--surface); border-radius: var(--radius); padding: 22px; max-width: 360px; width: 100%; box-shadow: var(--shadow); }
.modal h3 { margin: 0 0 10px; }
.modal p { color: var(--muted); font-size: 15px; }

/* Toast */
.toast {
  position: fixed; bottom: 90px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--text); color: #fff; padding: 12px 20px; border-radius: 999px; font-size: 14px;
  z-index: 200; opacity: 0; transition: .3s; pointer-events: none; max-width: 90%; text-align: center;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

.empty { text-align: center; color: var(--muted); padding: 30px 10px; font-size: 15px; }
.report-card { background: var(--surface); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); margin-bottom: 14px; }

/* Ledger table (流水表) */
.ledger-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; border-radius: var(--radius); box-shadow: var(--shadow); }
table.ledger { border-collapse: collapse; width: 100%; background: var(--surface); font-size: 13px; min-width: 380px; }
table.ledger th, table.ledger td { padding: 9px 8px; text-align: right; white-space: nowrap; border-bottom: 1px solid var(--border); }
table.ledger th { background: #F3EFE8; color: var(--muted); font-weight: 700; position: sticky; top: 0; font-size: 12px; }
table.ledger th:first-child, table.ledger td:first-child { text-align: left; }
table.ledger .col-hangseng { color: var(--bank-hangseng); }
table.ledger .col-boc { color: var(--bank-boc); }
table.ledger .col-antbank { color: var(--bank-antbank); }
table.ledger td.amt { font-weight: 700; }
table.ledger td.amt.pos { color: var(--positive); }
table.ledger td.amt.neg { color: var(--negative); }
table.ledger td.amt.xfer { color: var(--accent); }
table.ledger tr.bal-row td { background: #FBF8F3; font-weight: 800; border-top: 2px solid var(--border); color: var(--text); }
table.ledger .tdate { color: var(--muted); font-size: 12px; }
table.ledger tr.led-row { cursor: pointer; }
table.ledger tr.led-row:active { background: #FBF3EF; }

/* Share card (off-screen, for image export) */
#shareCard { position: absolute; left: -9999px; top: 0; width: 440px; }
.sc-wrap { width: 440px; background: var(--bg); padding: 22px; font-family: -apple-system, "PingFang HK", "Microsoft JhengHei", sans-serif; color: var(--text); }
.sc-hero { background: linear-gradient(135deg, #6FCF97, #4A90D9); color: #fff; border-radius: 18px; padding: 22px; text-align: center; }
.sc-hero .t { font-size: 16px; font-weight: 700; opacity: .95; }
.sc-hero .sub { font-size: 13px; opacity: .9; margin-top: 2px; }
.sc-hero .amt { font-size: 40px; font-weight: 800; margin-top: 10px; }
.sc-hero .ai { font-size: 14px; opacity: .95; margin-top: 4px; }
.sc-bank { background: #fff; border-radius: 14px; padding: 14px 16px; margin-top: 12px; border-left: 6px solid #999; display: flex; justify-content: space-between; align-items: center; }
.sc-bank.hangseng { border-left-color: var(--bank-hangseng); }
.sc-bank.boc { border-left-color: var(--bank-boc); }
.sc-bank.antbank { border-left-color: var(--bank-antbank); }
.sc-bank .nm { font-size: 17px; font-weight: 700; }
.sc-bank .meta { font-size: 12px; color: var(--muted); margin-top: 2px; }
.sc-bank .bal { font-size: 20px; font-weight: 800; }
.sc-row { display: flex; justify-content: space-between; background: #fff; border-radius: 12px; padding: 12px 16px; margin-top: 10px; font-size: 15px; font-weight: 600; }
.sc-foot { text-align: center; color: var(--muted); font-size: 12px; margin-top: 14px; }