:root {
  --demo-bg: #050816;
  --demo-surface: rgba(9, 18, 36, 0.92);
  --demo-surface-2: rgba(15, 28, 52, 0.92);
  --demo-line: rgba(110, 201, 255, 0.18);
  --demo-line-strong: rgba(83, 220, 255, 0.36);
  --demo-text: #eef5ff;
  --demo-muted: #a8b8d6;
  --demo-dim: #7486a7;
  --demo-cyan: #53dcff;
  --demo-mint: #38f1c2;
  --demo-violet: #8b72ff;
  --demo-amber: #ffd166;
  --demo-rose: #fb7185;
  --demo-radius: 16px;
  --demo-font: 'Noto Sans TC', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; -webkit-font-smoothing: antialiased; }
body {
  min-width: 320px;
  padding: 22px;
  color: var(--demo-text);
  background:
    radial-gradient(circle at 8% 0%, rgba(83, 220, 255, 0.13), transparent 28%),
    radial-gradient(circle at 92% 4%, rgba(139, 114, 255, 0.16), transparent 28%),
    linear-gradient(180deg, #07101f 0%, #050816 62%, #03050d 100%);
  font-family: var(--demo-font);
  font-size: 14px;
  line-height: 1.65;
  overflow-x: hidden;
}
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(110, 201, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(110, 201, 255, 0.035) 1px, transparent 1px);
  background-size: 96px 96px;
}
h1 { margin-bottom: 4px; color: var(--demo-text); font-size: 22px; line-height: 1.35; font-weight: 900; letter-spacing: -0.02em; }
h3 { color: var(--demo-text); }
p { color: var(--demo-muted); }
a { color: var(--demo-cyan); text-decoration: none; }
a:hover { color: var(--demo-mint); }
.sub { margin: 4px 0 18px; color: var(--demo-muted); font-size: 13px; }
.sub strong.red { color: #fecdd3; }
.btn,
button {
  font-family: inherit;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 8px 14px;
  color: var(--demo-text);
  background: rgba(255,255,255,.055);
  border: 1px solid var(--demo-line);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}
.btn-primary,
.btn.primary {
  color: #04111d;
  background: linear-gradient(135deg, var(--demo-cyan), var(--demo-mint));
  border-color: transparent;
  box-shadow: 0 10px 24px rgba(83,220,255,.20);
}
.card,
.col,
.summary-row,
.new-row,
.cat {
  border: 1px solid var(--demo-line);
  border-radius: var(--demo-radius);
  background: var(--demo-surface);
  box-shadow: 0 16px 42px rgba(0,0,0,.22);
}
.card { margin-bottom: 14px; overflow: hidden; }
.summary-row {
  display: flex;
  gap: 14px;
  padding: 14px;
  margin-bottom: 16px;
}
.summary-cell { flex: 1; text-align: center; }
.summary-cell .num { color: var(--demo-text); font-size: 22px; font-weight: 900; }
.summary-cell .num.green { color: var(--demo-mint); }
.summary-cell .lbl { margin-top: 2px; color: var(--demo-dim); font-size: 11px; }
.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  border-bottom: 1px solid rgba(110,201,255,.10);
}
.row:last-child { border-bottom: 0; }
.row .ttl,
.pay-head .ttl { color: var(--demo-text); font-weight: 800; }
.row .desc,
.pay-head .lbl,
.desc { color: var(--demo-muted); font-size: 13px; }
.switch { position: relative; width: 46px; height: 26px; flex: 0 0 auto; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider { position: absolute; inset: 0; background: linear-gradient(135deg,var(--demo-cyan),var(--demo-mint)); border-radius: 999px; box-shadow: 0 0 18px rgba(83,220,255,.20); }
.slider::before { content: ""; position: absolute; width: 20px; height: 20px; right: 3px; bottom: 3px; background: #fff; border-radius: 50%; }
.lock-banner {
  margin: 0 18px 14px;
  padding: 10px 13px;
  color: #fde68a;
  border: 1px solid rgba(255,209,102,.25);
  border-radius: 10px;
  background: rgba(255,209,102,.08);
  font-size: 13px;
}
.tmpl-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 10px; padding: 0 18px 18px; }
.tmpl {
  padding: 14px;
  border: 1px solid var(--demo-line);
  border-radius: 13px;
  background: rgba(255,255,255,.025);
}
.tmpl.selected { border-color: var(--demo-line-strong); background: linear-gradient(135deg,rgba(83,220,255,.12),rgba(56,241,194,.08)); box-shadow: 0 10px 24px rgba(83,220,255,.10); }
.tmpl.dim { opacity: .38; }
.tmpl h3 { margin-bottom: 5px; font-size: 14px; }
.tmpl p { color: var(--demo-muted); font-size: 12px; line-height: 1.55; }
.pay-head { padding: 16px 18px 4px; }
.pay-head .ttl { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.pay-head .lbl { padding: 5px 0 14px; }
.pay-tag { padding: 3px 8px; border-radius: 999px; font-size: 11px; }
.pay-tag.test { color: #fde68a; background: rgba(255,209,102,.12); border: 1px solid rgba(255,209,102,.20); }
.pay-tag.prod { color: #bbf7d0; background: rgba(56,241,194,.12); border: 1px solid rgba(56,241,194,.20); }
.grid-3 { display: grid; grid-template-columns: 1fr; gap: 8px; padding: 0 18px; }
.grid-3 label { display: block; margin-bottom: 3px; color: var(--demo-dim); font-size: 12px; }
.grid-3 input,
.toolbar input,
.toolbar select,
.new-row input,
textarea {
  width: 100%;
  color: var(--demo-text);
  background: rgba(5,8,22,.72);
  border: 1px solid var(--demo-line);
  border-radius: 9px;
  outline: none;
  font-family: inherit;
}
.grid-3 input,
.new-row input { padding: 9px 11px; font-size: 13px; }
.pay-mode { display: flex; align-items: center; gap: 14px; padding: 14px 18px; border-top: 1px solid rgba(110,201,255,.10); flex-wrap: wrap; }
.pay-mode .lbl,
.pay-mode .opt,
.compose-row .opt { color: var(--demo-muted); font-size: 13px; }
.annotation { position: relative; }
.arrow { position: absolute; padding: 5px 11px; color: #fde68a; background: rgba(255,209,102,.10); border: 1px solid rgba(255,209,102,.20); border-radius: 999px; font-size: 11px; font-weight: 700; box-shadow: 0 8px 18px rgba(0,0,0,.20); }
.arrow.up::before { content:"↓"; position:absolute; left:50%; bottom:-12px; transform:translateX(-50%); color:#fde68a; font-size:14px; }
.arrow.right::after { content:"←"; position:absolute; left:-12px; top:50%; transform:translateY(-50%); color:#fde68a; font-size:14px; }

/* 商品管理 */
.top { display: flex; justify-content: space-between; align-items: center; gap: 14px; margin-bottom: 14px; }
.toolbar { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; }
.toolbar input { width: 200px; padding: 8px 10px; font-size: 13px; }
.toolbar select { width: auto; padding: 8px 10px; font-size: 13px; background-color: rgba(5,8,22,.72); }
.toolbar input::placeholder,
.new-row input::placeholder,
textarea::placeholder { color: #64748b; }
.total { margin-left: auto; color: var(--demo-muted); font-size: 13px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill,minmax(220px,1fr)); gap: 14px; }
.grid .card { margin: 0; cursor: pointer; transition: transform .2s, border-color .2s, box-shadow .2s; }
.grid .card:hover { transform: translateY(-3px); border-color: var(--demo-line-strong); box-shadow: 0 14px 34px rgba(0,0,0,.28); }
.cover { position: relative; aspect-ratio: 4 / 3; background: #111c31 center/cover no-repeat; }
.cover::after { content:''; position:absolute; inset:0; background: linear-gradient(180deg, transparent 45%, rgba(5,8,22,.55)); }
.badge { position: absolute; z-index:2; top:8px; left:8px; padding:3px 8px; color:#04111d; background:linear-gradient(135deg,var(--demo-cyan),var(--demo-mint)); border-radius:999px; font-size:11px; font-weight:900; }
.grid .body { padding: 11px 14px 13px; }
.grid .body h3 { margin-bottom: 5px; font-size: 14px; }
.meta { display:flex; justify-content:space-between; align-items:center; color:var(--demo-muted); font-size:12px; }
.price { color:var(--demo-cyan); font-size:15px; font-weight:900; }

/* 商品分類 */
.new-row { display:flex; gap:8px; padding:14px; margin-bottom:18px; }
.new-row input { flex:1; }
.cat { display:flex; align-items:center; gap:12px; padding:12px 14px; margin-bottom:8px; }
.h { color:var(--demo-dim); font-size:18px; cursor:grab; }
.name { flex:1; color:var(--demo-text); font-size:14px; }
.count { padding:3px 9px; color:var(--demo-muted); background:rgba(255,255,255,.055); border-radius:999px; font-size:12px; }
.toggle { padding:5px 11px; color:#bbf7d0; background:rgba(56,241,194,.12); border:1px solid rgba(56,241,194,.20); border-radius:999px; font-size:12px; }
.x { padding:5px 8px; color:var(--demo-dim); background:transparent; border:0; cursor:pointer; font-size:14px; }

/* 訂單與詢價 */
.layout { display:grid; grid-template-columns:340px minmax(0,1fr); gap:16px; height:calc(100vh - 130px); }
.col { overflow:hidden; }
.col-head { display:flex; justify-content:space-between; align-items:center; gap:8px; padding:13px 15px; border-bottom:1px solid rgba(110,201,255,.10); }
.filters { display:flex; gap:5px; }
.fb { padding:5px 10px; color:var(--demo-muted); background:rgba(255,255,255,.04); border:1px solid var(--demo-line); border-radius:999px; font-size:12px; cursor:pointer; }
.fb.active { color:#04111d; background:linear-gradient(135deg,var(--demo-cyan),var(--demo-mint)); border-color:transparent; font-weight:800; }
.list { overflow-y:auto; }
.item { padding:13px 15px; border-bottom:1px solid rgba(110,201,255,.08); cursor:pointer; }
.item.active { background:linear-gradient(90deg,rgba(83,220,255,.11),rgba(139,114,255,.08)); }
.row-top { display:flex; gap:6px; align-items:center; margin-bottom:4px; }
.kt,
.pay-pill,
.pill { padding:3px 8px; border-radius:999px; font-size:10.5px; font-weight:800; }
.kt.o { color:#fde68a; background:rgba(255,209,102,.12); }
.kt.q { color:#bfdbfe; background:rgba(96,165,250,.13); }
.pay-pill.paid,
.pill.green { color:#bbf7d0; background:rgba(56,241,194,.12); }
.pay-pill.pend,
.pill.yellow { color:#fde68a; background:rgba(255,209,102,.12); }
.pill { display:inline-flex; margin-right:4px; color:var(--demo-muted); background:rgba(255,255,255,.055); }
.status { margin-left:auto; color:var(--demo-dim); font-size:12px; }
.dot { display:inline-block; width:8px; height:8px; margin-right:4px; border-radius:50%; }
.dot.new { background:var(--demo-rose); box-shadow:0 0 12px rgba(251,113,133,.70); }
.dot.contacted { background:var(--demo-amber); }
.row-name { color:var(--demo-text); font-size:14px; font-weight:800; }
.row-meta,
.row-msg { color:var(--demo-muted); font-size:12px; }
.row-msg { overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.detail { padding:22px; overflow-y:auto; }
.det-head .nm { color:var(--demo-text); font-size:20px; font-weight:900; }
.det-head .date { margin:3px 0 16px; color:var(--demo-muted); font-size:13px; }
.block { margin-bottom:14px; }
.lbl-uc { margin-bottom:6px; color:var(--demo-dim); font-size:11px; font-weight:800; letter-spacing:.10em; text-transform:uppercase; }
.det-val { color:var(--demo-muted); }
.det-val a { color:var(--demo-cyan); }
table { width:100%; border-collapse:collapse; font-size:13px; }
th, td { padding:8px 0; border-bottom:1px solid rgba(110,201,255,.10); text-align:left; }
th { color:var(--demo-dim); font-size:11px; font-weight:800; }
td { color:var(--demo-muted); }
.qty { width:60px; text-align:center; }
.sub-col { width:90px; text-align:right; }
.order-total { display:flex; justify-content:space-between; padding:11px 0; color:var(--demo-text); font-size:16px; font-weight:900; }
.order-total .v { color:var(--demo-cyan); }
.reply-panel { margin-top:14px; padding:14px; border:1px solid rgba(56,241,194,.22); border-radius:12px; background:rgba(56,241,194,.07); }
.reply-panel .lbl-uc { color:var(--demo-mint); }
textarea { padding:9px 11px; font-size:14px; resize:none; }
.compose-row { display:flex; align-items:center; gap:10px; margin-top:8px; flex-wrap:wrap; }
.actions { display:flex; gap:6px; margin-top:18px; padding-top:14px; border-top:1px solid rgba(110,201,255,.10); flex-wrap:wrap; }
.chip { padding:5px 10px; color:var(--demo-muted); background:rgba(255,255,255,.045); border:1px solid var(--demo-line); border-radius:999px; font-size:12px; }
.chip.active.contacted { color:#fde68a; background:rgba(255,209,102,.12); border-color:rgba(255,209,102,.25); }
@media (max-width:760px) {
  body { padding:16px; }
  .top,
  .pay-mode,
  .compose-row { align-items:stretch; flex-direction:column; }
  .tmpl-grid,
  .layout { grid-template-columns:1fr; height:auto; }
  .toolbar input { width:100%; }
  .total { margin-left:0; }
  .layout .col { min-height:auto; }
  .list { max-height:320px; }
}
@media (max-width:480px) {
  h1 { font-size:20px; }
  .summary-row { flex-direction:column; }
  .grid { grid-template-columns:1fr; }
  .row { align-items:flex-start; }
}