/* 安內咖啡 · 會員系統 — 全新精品咖啡風
   紙感底 × 濃縮棕 × 焦糖金 × 襯線標題 */
:root {
  --paper: #f1e7d6;        /* 紙感背景 */
  --paper-2: #e9dcc6;
  --card: #fbf6ec;         /* 卡面 */
  --espresso: #2a201a;     /* 濃縮棕（主文字） */
  --roast: #4b3524;        /* 烘焙棕 */
  --muted: #927f68;        /* 次要文字 */
  --gold: #b07a3c;         /* 焦糖金（主色） */
  --gold-2: #caa35f;
  --cream-line: #e2d3ba;   /* 分隔線 */
  --green: #6f8a5a;        /* 進帳（儲值） */
  --terra: #b4573c;        /* 出帳（扣款） */
  --radius: 18px;
  --shadow: 0 10px 30px rgba(74, 51, 30, .12);
  --serif: Georgia, "Songti TC", "Noto Serif CJK TC", "Times New Roman", serif;
  --sans: "PingFang TC", "Microsoft JhengHei", "Segoe UI", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: var(--sans);
  color: var(--espresso);
  background:
    radial-gradient(1200px 600px at 80% -10%, #f7efe0 0%, transparent 60%),
    var(--paper);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

/* 頁首 */
.topbar {
  display: flex; align-items: center; gap: 14px;
  padding: 18px 22px; max-width: 940px; margin: 0 auto;
}
.brand-mark {
  width: 46px; height: 46px; border-radius: 50%;
  border: 1.5px solid var(--roast); color: var(--roast);
  display: grid; place-items: center; text-align: center;
  font-family: var(--serif); font-weight: 700; font-size: 11px; line-height: 1;
  letter-spacing: .5px;
}
.brand-name { font-family: var(--serif); font-size: 20px; letter-spacing: 2px; color: var(--roast); }
.brand-name small { display: block; font-family: var(--sans); font-size: 11px; letter-spacing: 3px; color: var(--muted); margin-top: 2px; }
.mode {
  margin-left: auto; font-size: 12px; color: var(--muted);
  border: 1px solid var(--cream-line); background: var(--card);
  padding: 5px 12px; border-radius: 20px;
}

/* 分頁導覽 */
.tabs { display: flex; gap: 8px; max-width: 940px; margin: 0 auto; padding: 0 22px; flex-wrap: wrap; }
.tabs a {
  text-decoration: none; font-size: 14px; font-weight: 600; color: var(--muted);
  padding: 9px 16px; border-radius: 999px; border: 1px solid transparent;
}
.tabs a:hover { color: var(--roast); }
.tabs a.active { color: var(--roast); background: var(--card); border-color: var(--cream-line); box-shadow: var(--shadow); }

main { max-width: 940px; margin: 0 auto; padding: 22px; }

/* 卡片區塊 */
.card {
  background: var(--card); border: 1px solid var(--cream-line);
  border-radius: var(--radius); padding: 24px; margin-bottom: 20px;
  box-shadow: var(--shadow);
}
.card h2 { font-family: var(--serif); font-weight: 700; margin: 0 0 18px; font-size: 19px; color: var(--roast); letter-spacing: 1px; }
.hint { color: var(--muted); font-size: 13px; margin: -8px 0 6px; }

/* 表單 */
label { display: block; font-size: 12px; color: var(--muted); margin: 14px 0 6px; letter-spacing: .5px; }
input, select {
  width: 100%; padding: 12px 13px; font-size: 15px; color: var(--espresso);
  background: #fff; border: 1px solid var(--cream-line); border-radius: 12px; outline: none;
  font-family: var(--sans);
}
input:focus, select:focus { border-color: var(--gold); box-shadow: 0 0 0 3px rgba(176,122,60,.15); }
.row { display: flex; gap: 14px; flex-wrap: wrap; align-items: flex-end; }
.row > * { flex: 1; min-width: 150px; }

/* 儲值 / 扣款 切換 */
.seg { display: flex; gap: 12px; margin: 6px 0 2px; }
.seg button {
  flex: 1; padding: 15px; border-radius: 14px; cursor: pointer; font-family: var(--serif);
  background: #fff; color: var(--roast); border: 1.5px solid var(--cream-line);
  font-size: 17px; font-weight: 700; letter-spacing: 1px; transition: .15s;
}
.seg button.sel-topup { border-color: var(--green); background: rgba(111,138,90,.12); color: #4e6640; }
.seg button.sel-deduct { border-color: var(--terra); background: rgba(180,87,60,.12); color: #93412b; }

/* 按鈕 */
.btn {
  width: 100%; margin-top: 20px; padding: 15px; font-size: 16px; font-weight: 700; cursor: pointer;
  background: linear-gradient(180deg, var(--gold-2), var(--gold)); color: #fff;
  border: none; border-radius: 14px; letter-spacing: 1px; font-family: var(--sans);
  box-shadow: 0 6px 16px rgba(176,122,60,.35);
}
.btn:hover { filter: brightness(1.05); }
.btn.ghost { background: none; color: var(--roast); border: 1.5px solid var(--gold); box-shadow: none; }
.btn.sm { width: auto; padding: 10px 18px; font-size: 14px; margin: 0; }

.msg { margin-top: 16px; padding: 13px 15px; border-radius: 12px; font-size: 14px; display: none; }
.msg.ok  { display: block; background: rgba(111,138,90,.14); color: #4e6640; border: 1px solid rgba(111,138,90,.5); }
.msg.err { display: block; background: rgba(180,87,60,.12); color: #93412b; border: 1px solid rgba(180,87,60,.5); }

/* QR */
.qr-box { text-align: center; margin-top: 18px; }
.qr-box img { width: 210px; height: 210px; background: #fff; padding: 12px; border-radius: 14px; border: 1px solid var(--cream-line); }
.qr-box .cap { font-size: 12px; color: var(--muted); margin-top: 8px; }

/* ====== 顧客會員卡 ====== */
.membercard {
  position: relative; overflow: hidden;
  border-radius: 22px; padding: 26px 26px 22px; color: #f4e9d6;
  background:
    radial-gradient(600px 300px at 110% -20%, #6b4a2c 0%, transparent 55%),
    linear-gradient(150deg, #3a281b 0%, #241811 100%);
  box-shadow: 0 18px 40px rgba(36, 24, 17, .4);
  border: 1px solid rgba(202,163,95,.35);
}
.membercard::after {
  content: ""; position: absolute; right: -40px; bottom: -60px;
  width: 220px; height: 220px; border-radius: 50%;
  border: 28px solid rgba(202,163,95,.08);
}
.membercard .mc-top { display: flex; justify-content: space-between; align-items: flex-start; }
.membercard .mc-brand { font-family: var(--serif); letter-spacing: 3px; font-size: 15px; color: var(--gold-2); }
.membercard .mc-brand small { display: block; font-family: var(--sans); font-size: 10px; letter-spacing: 4px; color: rgba(244,233,214,.6); margin-top: 3px; }
.membercard .mc-chip { width: 40px; height: 30px; border-radius: 7px; background: linear-gradient(135deg, #d8b877, #a9793f); opacity: .9; }
.membercard .mc-label { font-size: 11px; letter-spacing: 3px; color: rgba(244,233,214,.6); margin-top: 22px; }
.membercard .mc-balance { font-family: var(--serif); font-size: 46px; font-weight: 700; letter-spacing: 1px; margin-top: 2px; }
.membercard .mc-balance span { font-size: 18px; color: var(--gold-2); margin-left: 6px; }
.membercard .mc-foot { display: flex; justify-content: space-between; align-items: flex-end; margin-top: 20px; }
.membercard .mc-name { font-size: 18px; letter-spacing: 2px; }
.membercard .mc-phone { font-size: 13px; color: rgba(244,233,214,.65); letter-spacing: 2px; margin-top: 3px; }
.membercard .mc-bday { font-size: 11px; color: rgba(244,233,214,.55); text-align: right; }

/* 交易時間軸 */
.tx-list { list-style: none; margin: 6px 0 0; padding: 0; }
.tx-item { display: flex; align-items: center; gap: 14px; padding: 13px 4px; border-bottom: 1px solid var(--cream-line); }
.tx-item:last-child { border-bottom: none; }
.tx-ic { width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center; font-size: 18px; flex: 0 0 auto; }
.tx-ic.topup { background: rgba(111,138,90,.15); color: #4e6640; }
.tx-ic.deduct { background: rgba(180,87,60,.13); color: #93412b; }
.tx-main { flex: 1; }
.tx-main .t1 { font-size: 15px; font-weight: 600; }
.tx-main .t2 { font-size: 12px; color: var(--muted); margin-top: 2px; }
.tx-amt { font-family: var(--serif); font-size: 18px; font-weight: 700; }
.tx-amt.pos { color: #4e6640; }
.tx-amt.neg { color: #93412b; }
.tx-bal { font-size: 11px; color: var(--muted); text-align: right; }

/* 表格 */
.table-wrap { overflow-x: auto; border: 1px solid var(--cream-line); border-radius: 14px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
thead th { background: var(--paper-2); color: var(--roast); text-align: left; padding: 13px 12px; font-weight: 700; white-space: nowrap; }
tbody td { padding: 12px; border-top: 1px solid var(--cream-line); }
tbody tr:hover { background: rgba(176,122,60,.05); }
.mono { font-family: ui-monospace, Menlo, monospace; font-size: 11px; color: var(--muted); }
.pill { padding: 3px 11px; border-radius: 999px; font-size: 12px; font-weight: 700; }
.pill.topup { background: rgba(111,138,90,.16); color: #4e6640; }
.pill.deduct { background: rgba(180,87,60,.14); color: #93412b; }
.amount-pos { color: #4e6640; font-weight: 700; }
.amount-neg { color: #93412b; font-weight: 700; }
.balance { color: var(--gold); font-weight: 700; }

.summary { display: flex; gap: 26px; margin: 6px 0 14px; flex-wrap: wrap; }
.summary .box { background: var(--paper-2); border-radius: 14px; padding: 14px 20px; }
.summary .box .k { font-size: 12px; color: var(--muted); letter-spacing: 1px; }
.summary .box .v { font-family: var(--serif); font-size: 26px; font-weight: 700; margin-top: 2px; }
.empty { padding: 30px; text-align: center; color: var(--muted); }
.count { color: var(--muted); font-size: 13px; margin: 12px 0; }
.footer { text-align: center; color: var(--muted); font-size: 12px; margin: 30px 0 20px; letter-spacing: 1px; }