:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #1a1d21;
  --muted: #6b7280;
  --line: #e5e7eb;
  --brand: #ff6b35;
  --brand-ink: #ffffff;
  --ok: #16a34a;
  --danger: #dc2626;
  --warn: #b45309;
  --radius: 14px;
  --shadow: 0 1px 3px rgba(0,0,0,.06), 0 4px 16px rgba(0,0,0,.04);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115; --card: #181b21; --text: #e8eaed; --muted: #9aa0aa;
    --line: #2a2f37; --brand: #ff7a47; --shadow: 0 1px 3px rgba(0,0,0,.4); --warn: #fbbf24;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.5 -apple-system, "PingFang TC", "Noto Sans TC", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 560px; margin: 0 auto; padding: 16px 16px 96px; }
header.app {
  display: flex; align-items: center; gap: 10px; padding: 8px 2px 16px;
}
header.app .logo { font-size: 26px; }
header.app h1 { font-size: 20px; margin: 0; letter-spacing: .5px; }
header.app .sub { color: var(--muted); font-size: 13px; }

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 16px; margin-bottom: 14px;
}
.card h2 { font-size: 15px; margin: 0 0 12px; color: var(--muted); font-weight: 600; }

label { display: block; font-size: 13px; color: var(--muted); margin: 0 0 6px; }
input[type=text], input[type=number], textarea {
  width: 100%; padding: 11px 12px; border: 1px solid var(--line); border-radius: 10px;
  background: var(--bg); color: var(--text); font: inherit;
}
textarea { min-height: 120px; resize: vertical; }
input:focus, textarea:focus { outline: 2px solid var(--brand); border-color: transparent; }

.btn {
  appearance: none; border: none; border-radius: 11px; padding: 12px 16px;
  font: inherit; font-weight: 600; cursor: pointer; background: var(--brand);
  color: var(--brand-ink); width: 100%; transition: transform .05s, filter .15s;
}
.btn:active { transform: scale(.985); }
.btn:disabled { opacity: .5; cursor: default; }
.btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--line); }
.btn.sm { width: auto; padding: 8px 12px; font-size: 14px; }
.btn.link { background: none; color: var(--brand); width: auto; padding: 6px; }
.btn.link.danger { color: var(--danger); font-size: 13px; }

.tabs { display: flex; gap: 6px; margin-bottom: 12px; }
.tabs button {
  flex: 1; padding: 9px; border: 1px solid var(--line); background: var(--bg);
  border-radius: 10px; font: inherit; color: var(--muted); cursor: pointer;
}
.tabs button.on { background: var(--brand); color: var(--brand-ink); border-color: var(--brand); }

.row { display: flex; align-items: center; gap: 10px; }
.spread { justify-content: space-between; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.hint { font-size: 12px; color: var(--muted); margin-top: 6px; }

/* menu item editor rows */
.mrow { display: grid; grid-template-columns: 1fr 90px 34px; gap: 8px; margin-bottom: 8px; align-items: center; }
.mrow input { padding: 9px 10px; }
.mrow .del { border: none; background: none; color: var(--danger); font-size: 20px; cursor: pointer; }

/* diner menu list with steppers */
.item { display: flex; align-items: center; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid var(--line); }
.item:last-child { border-bottom: none; }
.item .name { font-weight: 600; }
.item .price { color: var(--muted); font-size: 14px; }
.stepper { display: flex; align-items: center; gap: 12px; }
.stepper button {
  width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--line);
  background: var(--bg); font-size: 20px; line-height: 1; cursor: pointer; color: var(--text);
}
.stepper button.plus { background: var(--brand); color: var(--brand-ink); border-color: var(--brand); }
.stepper .qty { min-width: 20px; text-align: center; font-weight: 700; font-variant-numeric: tabular-nums; }
.qty0 { color: var(--muted); font-weight: 400; }

/* tally */
.tally .trow { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px dashed var(--line); }
.tally .trow .q { font-variant-numeric: tabular-nums; }
.total { display: flex; justify-content: space-between; font-size: 20px; font-weight: 800; margin-top: 12px; }
.total .amt { color: var(--brand); }

.badge { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge.open { background: color-mix(in srgb, var(--ok) 15%, transparent); color: var(--ok); }
.badge.closed { background: color-mix(in srgb, var(--danger) 15%, transparent); color: var(--danger); }

.sharebox { display: flex; gap: 8px; }
.sharebox input { font-size: 13px; }

.people .p { padding: 10px 0; border-bottom: 1px solid var(--line); }
.people .p:last-child { border-bottom: none; }
.people .p .who { font-weight: 600; display: flex; justify-content: space-between; }
.people .p .what { font-size: 13px; color: var(--muted); margin-top: 2px; }

.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%);
  background: var(--text); color: var(--bg); padding: 10px 16px; border-radius: 999px;
  font-size: 14px; opacity: 0; transition: opacity .2s; pointer-events: none; z-index: 50;
}
.toast.show { opacity: 1; }

.spin { display: inline-block; width: 16px; height: 16px; border: 2px solid var(--line);
  border-top-color: var(--brand); border-radius: 50%; animation: spin .7s linear infinite; vertical-align: -3px; }
@keyframes spin { to { transform: rotate(360deg); } }

.card.warn { background: color-mix(in srgb, #f59e0b 12%, var(--card)); border-color: color-mix(in srgb, #f59e0b 40%, var(--line)); }
.card.warn .wtext { font-size: 14px; line-height: 1.55; }
.card.warn strong { color: #b45309; }
@media (prefers-color-scheme: dark) { .card.warn strong { color: #fbbf24; } }
.card.linewarn { background: color-mix(in srgb, #06c755 12%, var(--card)); border-color: color-mix(in srgb, #06c755 40%, var(--line)); }
.card.linewarn .wtext { font-size: 14px; line-height: 1.55; }
.card.linewarn strong { color: #048a3d; }
@media (prefers-color-scheme: dark) { .card.linewarn strong { color: #34d67f; } }

.empty { text-align: center; color: var(--muted); padding: 24px 0; font-size: 14px; }
.mysessions a { display: block; padding: 10px 0; border-bottom: 1px solid var(--line); color: var(--text); text-decoration: none; }
.mysessions a:last-child { border-bottom: none; }

/* 可自訂品項：自訂按鈕 */
.custbtn { flex: none; border: 1px solid var(--brand); color: var(--brand); background: transparent;
  padding: 8px 14px; border-radius: 11px; font: inherit; font-weight: 600; font-size: 14px; cursor: pointer; }
.custbtn:active { background: color-mix(in srgb, var(--brand) 12%, transparent); }

/* 購物車 */
.cart .cline { display: flex; align-items: flex-start; gap: 10px; padding: 11px 0; border-bottom: 1px solid var(--line); }
.cart .cline:last-child { border-bottom: none; }
.cart .ci { flex: 1; min-width: 0; }
.cart .cn { font-weight: 600; }
.cart .cot { font-size: 13px; color: var(--muted); margin-top: 2px; }
.cart .cr { text-align: right; flex: none; display: flex; flex-direction: column; align-items: flex-end; gap: 8px; }
.cart .camt { font-weight: 700; font-variant-numeric: tabular-nums; }
.mini { display: flex; align-items: center; gap: 9px; }
.mini button { width: 28px; height: 28px; border-radius: 50%; border: 1px solid var(--line); background: var(--bg); color: var(--text); font-size: 17px; line-height: 1; cursor: pointer; }
.mini button.plus { background: var(--brand); color: var(--brand-ink); border-color: var(--brand); }
.mini .q { min-width: 14px; text-align: center; font-weight: 700; font-variant-numeric: tabular-nums; font-size: 14px; }

/* bottom sheet 自訂面板 */
.scrim { position: fixed; inset: 0; background: rgba(0,0,0,.4); opacity: 0; pointer-events: none; transition: opacity .22s; z-index: 40; }
.scrim.on { opacity: 1; pointer-events: auto; }
.sheet { position: fixed; left: 0; right: 0; bottom: 0; z-index: 41; background: var(--card);
  border-radius: 20px 20px 0 0; padding: 8px 18px calc(20px + env(safe-area-inset-bottom));
  max-width: 560px; margin: 0 auto; transform: translateY(101%);
  transition: transform .26s cubic-bezier(.32,.72,0,1); max-height: 88vh; overflow: auto; }
.sheet.on { transform: translateY(0); }
.grab { width: 38px; height: 4px; background: var(--line); border-radius: 2px; margin: 6px auto 12px; }
.sheet h3 { margin: 0 0 2px; font-size: 19px; }
.sheet .sbase { color: var(--muted); font-size: 14px; margin-bottom: 14px; }
.grp { margin-bottom: 16px; }
.grp .gh { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 9px; }
.grp .gh .gn { font-weight: 700; font-size: 15px; }
.grp .gh .req { font-size: 11px; color: var(--muted); }
.opts { display: flex; flex-wrap: wrap; gap: 8px; }
.opt { border: 1px solid var(--line); background: var(--bg); color: var(--text); border-radius: 11px;
  padding: 9px 14px; font: inherit; font-size: 14px; cursor: pointer; display: flex; align-items: center; gap: 6px; }
.opt .d { color: var(--muted); font-size: 12.5px; }
.opt[aria-checked="true"] { border-color: var(--brand); background: color-mix(in srgb, var(--brand) 13%, transparent); font-weight: 600; }
.opt[aria-checked="true"] .d { color: var(--brand); }
.sheetfoot { display: flex; align-items: center; gap: 14px; margin-top: 6px; }
.sheet .add { flex: 1; border: none; border-radius: 12px; padding: 14px; font: inherit; font-weight: 700; background: var(--brand); color: var(--brand-ink); cursor: pointer; }
@media (prefers-reduced-motion: reduce) { .sheet, .scrim { transition: none; } }

/* 菜單編輯器 */
.eitem { border: 1px solid var(--line); border-radius: 12px; padding: 10px; margin-bottom: 10px; background: var(--bg); }
.erow { display: grid; grid-template-columns: 1fr 82px 32px; gap: 8px; align-items: center; }
.erow .mn, .erow .mp { padding: 9px 10px; }
.erow .del { border: none; background: none; color: var(--danger); font-size: 20px; cursor: pointer; }
.eopts { margin-top: 8px; }
.egrp { border: 1px dashed var(--line); border-radius: 10px; padding: 8px 10px; margin-bottom: 8px; }
.egh { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.egh .egname { flex: 1; padding: 7px 9px; font-size: 14px; }
.egh .etype { flex: none; border: 1px solid var(--brand); color: var(--brand); background: transparent; border-radius: 8px; padding: 6px 10px; font: inherit; font-size: 12.5px; cursor: pointer; }
.egh .delgrp { flex: none; border: none; background: none; color: var(--muted); font-size: 12.5px; cursor: pointer; text-decoration: underline; }
.echoice { display: grid; grid-template-columns: 1fr 74px 28px; gap: 6px; align-items: center; margin-bottom: 5px; }
.echoice input { padding: 7px 9px; font-size: 14px; }
.echoice .delchoice { border: none; background: none; color: var(--danger); font-size: 17px; cursor: pointer; }
.addchoice { padding: 4px 6px; font-size: 13px; }
.tpls { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin-top: 4px; }
.tpls button { border: 1px solid var(--line); background: var(--card); color: var(--text); border-radius: 999px; padding: 5px 11px; font: inherit; font-size: 12.5px; cursor: pointer; }
.tpls button:active { background: color-mix(in srgb, var(--brand) 12%, transparent); }

/* 菜單原圖檢視 overlay */
.photomodal { position: fixed; inset: 0; z-index: 60; display: none; align-items: center; justify-content: center;
  background: rgba(0,0,0,.82); padding: 16px; }
.photomodal.on { display: flex; }
.photomodal .pm-body { max-width: 100%; max-height: 100%; overflow: auto; }
.photomodal img { display: block; max-width: 100%; max-height: 88vh; border-radius: 8px; }
.photomodal .pm-loading { color: #fff; font-size: 15px; padding: 40px 0; text-align: center; }
.photomodal .pm-close { position: fixed; top: 14px; right: 16px; width: 40px; height: 40px; border-radius: 50%;
  border: none; background: rgba(255,255,255,.16); color: #fff; font-size: 24px; line-height: 1; cursor: pointer; }
.photomodal .pm-close:active { background: rgba(255,255,255,.3); }

/* 點餐頁分區導覽 + 區塊標題 */
.catnav { position: sticky; top: 0; z-index: 20; display: flex; gap: 8px; overflow-x: auto; padding: 8px 0; margin: -4px 0 4px;
  background: var(--card); -webkit-overflow-scrolling: touch; scrollbar-width: none; }
.catnav::-webkit-scrollbar { display: none; }
.catchip { flex: none; border: 1px solid var(--line); background: var(--bg); color: var(--text); border-radius: 99px;
  padding: 5px 13px; font: inherit; font-size: 13px; font-weight: 600; cursor: pointer; white-space: nowrap; }
.catchip:active { background: color-mix(in srgb, var(--brand) 14%, transparent); border-color: var(--brand); }
.catsec { scroll-margin-top: 52px; }
.cath { font-size: 13px; font-weight: 700; color: var(--muted); padding: 12px 0 2px; border-bottom: 1px solid var(--line); margin-bottom: 2px; }
.catsec:first-child .cath { padding-top: 2px; }

/* 浮動鈕（看照片常駐 / 回頂端捲動後出現） */
.fabs { position: fixed; right: 16px; bottom: calc(18px + env(safe-area-inset-bottom)); z-index: 35; display: flex; flex-direction: column; gap: 10px; }
.fab { width: 48px; height: 48px; border-radius: 50%; border: 1px solid var(--line); background: var(--card); color: var(--text);
  box-shadow: 0 3px 12px rgba(0,0,0,.18); font-size: 21px; line-height: 1; cursor: pointer; display: flex; align-items: center; justify-content: center; }
.fab:active { transform: scale(.94); }
.fab.top { display: none; }
.fabs.scrolled .fab.top { display: flex; }

/* 「你已經送出了」確認卡（點餐者確認有沒有送出、送了什麼） */
.card.submitted { background: color-mix(in srgb, var(--ok) 8%, var(--card)); border-color: color-mix(in srgb, var(--ok) 35%, var(--line)); }
.card.submitted strong { color: var(--ok); }
.sline { display: flex; justify-content: space-between; gap: 10px; padding: 6px 0; border-bottom: 1px dashed var(--line); font-size: 14.5px; }
.sline:last-child { border-bottom: 0; }
.card.submitted .hint.dirty { color: var(--warn); font-weight: 600; }
#srcSheet .isub { color: var(--muted); font-size: 14px; margin-bottom: 14px; }

/* 我的管理連結（救回開團管理頁） */
.card.managelink { background: color-mix(in srgb, var(--brand) 6%, var(--card)); border-color: color-mix(in srgb, var(--brand) 30%, var(--line)); }

/* 加到主畫面（PWA） */
.install-btn { display: block; width: 100%; margin: 4px 0 10px; border: 1px solid color-mix(in srgb, var(--brand) 45%, var(--line));
  background: color-mix(in srgb, var(--brand) 8%, var(--card)); color: var(--brand); border-radius: 14px;
  padding: 14px; font: inherit; font-size: 14px; font-weight: 700; cursor: pointer; transition: transform .05s; }
.install-btn:active { transform: scale(.99); }
#installSheet .isub { color: var(--muted); font-size: 14px; margin-bottom: 14px; }
#installSheet .istep { display: flex; gap: 12px; align-items: flex-start; padding: 9px 0; font-size: 14.5px; border-bottom: 1px dashed var(--line); }
#installSheet .istep b:first-child { flex: none; width: 24px; height: 24px; border-radius: 50%; background: var(--brand); color: #fff;
  display: flex; align-items: center; justify-content: center; font-size: 13px; }
#installSheet .inote { color: var(--muted); font-size: 12.5px; margin-top: 12px; }

/* 請我喝咖啡（贊助） */
.coffee-btn { display: block; width: 100%; margin-top: 4px; border: 1px dashed var(--line); background: var(--card);
  color: var(--muted); border-radius: 14px; padding: 14px; font: inherit; font-size: 14px; font-weight: 600; cursor: pointer; transition: transform .05s; }
.coffee-btn:active { transform: scale(.99); }
.cscrim { position: fixed; inset: 0; background: rgba(0,0,0,.4); opacity: 0; pointer-events: none; transition: opacity .22s; z-index: 40; }
.cscrim.on { opacity: 1; pointer-events: auto; }
.coffee-sheet h3 { font-size: 18px; }
.coffee-sheet .base { color: var(--muted); font-size: 14px; margin-bottom: 14px; }
.pay { background: var(--bg); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; margin-bottom: 12px; }
.pay .ph { font-weight: 700; font-size: 14px; margin-bottom: 6px; display: flex; align-items: center; gap: 6px; }
.pay .jk { display: inline-flex; align-items: center; justify-content: center; background: #eb1b23; color: #fff;
  border-radius: 5px; width: 20px; height: 20px; font-size: 12px; font-weight: 700; }
.prow { display: flex; align-items: center; gap: 10px; padding: 6px 0; }
.prow .k { color: var(--muted); font-size: 13px; min-width: 66px; }
.prow .v { flex: 1; font-variant-numeric: tabular-nums; font-weight: 700; letter-spacing: .4px; }
.prow .cp { border: 1px solid var(--brand); color: var(--brand); background: transparent; border-radius: 8px;
  padding: 6px 13px; font: inherit; font-size: 13px; font-weight: 600; cursor: pointer; flex: none; }
.prow .cp.done { background: var(--ok); border-color: var(--ok); color: #fff; }
.pnote { color: var(--muted); font-size: 12px; margin-top: 6px; }
.qr { display: block; width: 100%; max-width: 240px; margin: 8px auto 12px; border-radius: 10px; background: #fff; padding: 8px; }
.thanks { text-align: center; color: var(--muted); font-size: 13px; margin-top: 2px; }