/* ─────────────────────────────────────────────
   密钥商城（演示）· 全站样式：商城 / 收银台 / 管理后台
   深色主题，无框架。改样式只动这一个文件。
   ───────────────────────────────────────────── */

:root {
  --bg: #020617;
  --bg-alt: #0f172a;
  --card: #0b1220;
  --border: #1e293b;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #f59e0b;
  --primary: #0052cc;
  --green: #34d399;
  --red: #f87171;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }

/* ── 演示声明条 ── */
.demo-banner {
  background: #3a2507;
  border-bottom: 1px solid #92400e;
  color: #fbbf24;
  text-align: center;
  font-size: 12px;
  padding: 8px 16px;
}

/* ── 导航 ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(2, 6, 23, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1000px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  background: var(--primary);
  color: #fff;
  border-radius: 8px;
  font-weight: 700;
}
.brand strong { display: block; font-size: 14px; color: #fff; }
.brand small { display: block; font-size: 11px; color: var(--muted); }
.nav-links { margin-left: auto; display: flex; gap: 22px; font-size: 14px; color: var(--muted); }
.nav-links a:hover { color: #fff; }

/* ── 按钮 ── */
.btn {
  display: inline-block;
  padding: 10px 22px;
  border-radius: 8px;
  font-size: 14px;
  border: none;
  cursor: pointer;
  transition: background 0.15s;
  text-align: center;
  background: transparent;
  color: var(--text);
  font-family: inherit;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: #0a5fe0; }
.btn-ghost { border: 1px solid var(--border); color: var(--text); }
.btn-ghost:hover { background: var(--bg-alt); }
.btn-block { display: block; width: 100%; }

/* ── 商城 Hero / 区块 ── */
.hero { max-width: 1000px; margin: 0 auto; padding: 56px 20px 24px; }
.hero h1 { font-size: clamp(26px, 5vw, 40px); color: #fff; }
.hero-sub { margin-top: 10px; color: var(--muted); }
.section { max-width: 1000px; margin: 0 auto; padding: 36px 20px; }
.section-alt { background: var(--bg-alt); max-width: none; }
.section-alt > * { max-width: 1000px; margin-left: auto; margin-right: auto; }
.steps h2 { color: #fff; font-size: 20px; }
.steps ol { margin-top: 12px; padding-left: 22px; color: var(--muted); font-size: 14px; }
.steps li + li { margin-top: 6px; }

/* ── 商品卡片 ── */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}
.card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color 0.15s;
}
.card:hover { border-color: #334155; }
.card-tag {
  position: absolute;
  top: 14px; right: 14px;
  font-size: 11px;
  color: var(--accent);
  border: 1px solid #92400e;
  background: #3a2507;
  border-radius: 999px;
  padding: 2px 10px;
}
.card h3 { font-size: 16px; color: #fff; padding-right: 56px; }
.card-desc { font-size: 13px; color: var(--muted); flex: 1; }
.card-meta { display: flex; align-items: baseline; gap: 12px; }
.price { font-size: 22px; font-weight: 700; color: var(--accent); }
.stock { font-size: 12px; color: var(--muted); }

/* ── 收银台 ── */
.checkout { max-width: 720px; margin: 0 auto; padding: 36px 20px; display: flex; flex-direction: column; gap: 20px; }
.panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}
.panel h2 { font-size: 17px; color: #fff; margin-bottom: 16px; }
.order-lines { display: flex; flex-direction: column; gap: 10px; }
.order-line { display: flex; justify-content: space-between; font-size: 14px; }
.order-no { color: var(--muted); font-size: 12px; }
.order-total {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px dashed var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.order-total strong { font-size: 26px; color: var(--accent); }
.empty { color: var(--muted); font-size: 14px; }

.pay-tabs { display: flex; gap: 8px; margin-bottom: 18px; }
.pay-tab {
  padding: 8px 20px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  font-size: 14px;
  cursor: pointer;
}
.pay-tab.active { border-color: var(--primary); color: #fff; background: rgba(0, 82, 204, 0.15); }
.pay-body { display: grid; grid-template-columns: 200px 1fr; gap: 24px; align-items: start; }
.qr-box { text-align: center; }
.qr-box img { width: 180px; height: 180px; background: #fff; border-radius: 8px; padding: 8px; }
.qr-hint { margin-top: 10px; font-size: 12px; color: var(--muted); }
.pay-side { display: flex; flex-direction: column; gap: 12px; }
.pay-note { font-size: 13px; color: var(--muted); }

.success-panel { text-align: center; }
.success-icon {
  width: 56px; height: 56px;
  margin: 0 auto 12px;
  border-radius: 50%;
  background: rgba(52, 211, 153, 0.15);
  border: 1px solid #065f46;
  color: var(--green);
  font-size: 28px;
  display: flex; align-items: center; justify-content: center;
}
.success-meta { margin: 10px 0 18px; color: var(--muted); font-size: 13px; }

/* ── 管理后台 ── */
.gate-card {
  max-width: 360px;
  margin: 48px auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.gate-card h2 { color: #fff; font-size: 18px; text-align: center; }
.gate-hint { text-align: center; font-size: 12px; color: var(--muted); }
.gate-card input {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 10px 14px;
  font-size: 14px;
}
.gate-card input:focus { outline: none; border-color: var(--primary); }
.gate-error { color: var(--red); font-size: 13px; text-align: center; }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 14px;
}
.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
}
.stat-value { font-size: 22px; font-weight: 700; color: #fff; }
.stat-label { margin-top: 4px; font-size: 12px; color: var(--muted); }

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 20px;
  max-width: 1040px;
  margin: 0 auto;
}
.two-col .section { width: 100%; }

.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th {
  text-align: left;
  color: var(--muted);
  font-weight: 500;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
}
.table td { padding: 9px 10px; border-bottom: 1px solid var(--border); }
.badge { font-size: 11px; border-radius: 999px; padding: 2px 10px; white-space: nowrap; }
.badge-green { color: var(--green); border: 1px solid #065f46; background: #052e22; }
.badge-amber { color: #fbbf24; border: 1px solid #92400e; background: #3a2507; }
.badge-red { color: var(--red); border: 1px solid #7f1d1d; background: #2a0e0e; }

/* ── 页脚（备案号必须保留） ── */
.footer {
  border-top: 1px solid var(--border);
  padding: 28px 20px;
  text-align: center;
  font-size: 12px;
  color: var(--muted);
}
.footer a:hover { color: #fff; text-decoration: underline; }
.footer p + p { margin-top: 6px; }

@media (max-width: 760px) {
  .nav-links { gap: 14px; font-size: 13px; }
  .pay-body { grid-template-columns: 1fr; }
  .two-col { grid-template-columns: 1fr; }
}

/* ── v2 新增：动态商城/后台组件 ── */
.card-actions { display: flex; gap: 8px; }
.card-actions .btn { flex: 1; padding: 9px 10px; font-size: 13px; }
.btn-lg { padding: 13px 30px; font-size: 15px; }

/* 详情页 */
.detail { display: grid; grid-template-columns: 320px 1fr; gap: 32px; }
.detail-visual {
  min-height: 240px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background:
    radial-gradient(circle at 30% 30%, rgba(0, 82, 204, 0.35), transparent 60%),
    var(--card);
  position: relative;
}
.detail-badge {
  position: absolute; top: 14px; left: 14px;
  font-size: 12px; color: var(--accent);
  border: 1px solid #92400e; background: #3a2507;
  border-radius: 999px; padding: 3px 12px;
}
.detail-info h1 { font-size: 26px; color: #fff; }
.detail-summary { margin-top: 10px; color: var(--muted); font-size: 14px; }
.detail-price { margin-top: 18px; font-size: 32px; font-weight: 700; color: var(--accent); }
.detail-stock { margin-top: 6px; font-size: 13px; color: var(--muted); }
.detail-actions { margin-top: 22px; display: flex; gap: 12px; }
.detail-body { margin-top: 28px; }
.detail-text { font-size: 14px; color: var(--muted); line-height: 1.9; white-space: normal; }

/* 服务中心 / 表单 */
.inline-form { display: flex; gap: 10px; margin: 14px 0; flex-wrap: wrap; }
.inline-form input, .inline-form select, .product-form input, .product-form select, .product-form textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 10px 14px;
  font-size: 14px;
}
.inline-form input { flex: 1; min-width: 220px; }
.inline-form input:focus, .product-form input:focus, .product-form textarea:focus, .inline-form select:focus {
  outline: none; border-color: var(--primary);
}
.result-box {
  margin-top: 12px; padding: 16px;
  border: 1px solid var(--border); border-radius: 10px;
  background: var(--bg);
  font-size: 13px;
  display: flex; flex-direction: column; gap: 8px;
}
.result-ok { border-color: #065f46; color: var(--green); }
.result-fail { border-color: #7f1d1d; color: var(--red); }
.keys-inline { list-style: none; display: flex; flex-direction: column; gap: 6px; padding-left: 4px; }
.key-status { font-size: 11px; color: var(--muted); margin-left: 8px; }
.key-used { font-size: 11px; color: var(--green); margin-left: 8px; }
.form-error { color: var(--red); font-size: 13px; }

/* 支付成功卡密 */
.keys-box { margin: 16px 0; padding: 16px; border: 1px dashed #92400e; border-radius: 10px; background: #221503; }
.keys-box h3 { font-size: 14px; color: #fbbf24; margin-bottom: 10px; }
.keys-box ul { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.success-actions { margin-top: 18px; display: flex; gap: 12px; justify-content: center; }

/* 后台 Tab */
.tab-bar {
  max-width: 1000px; margin: 0 auto; padding: 18px 20px 0;
  display: flex; gap: 8px; flex-wrap: wrap;
}
.tab {
  padding: 9px 22px; border-radius: 8px 8px 0 0;
  border: 1px solid var(--border); border-bottom: none;
  background: transparent; color: var(--muted); font-size: 14px; cursor: pointer;
}
.tab.active { background: var(--card); color: #fff; border-color: #334155; }
.tab-page { max-width: 1000px; margin: 0 auto; padding: 20px; display: flex; flex-direction: column; gap: 20px; }
.tab-page .panel { margin: 0; }
.tab-page .stat-grid { margin: 0; }
/* 第 6 张统计卡（卡密池）在换行时独占整行，避免被挤成窄条 */
#stat-grid .stat-card:last-child { grid-column: 1 / -1; }
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.panel-head h2 { margin: 0; }
.filter-bar { display: flex; gap: 6px; }
.filter {
  padding: 6px 14px; border-radius: 999px; font-size: 12px;
  border: 1px solid var(--border); background: transparent; color: var(--muted); cursor: pointer;
}
.filter.active { border-color: var(--primary); color: #fff; background: rgba(0, 82, 204, 0.15); }
.pager { display: flex; align-items: center; justify-content: center; gap: 14px; margin-top: 14px; font-size: 12px; color: var(--muted); }
.badge-slate { color: var(--muted); border: 1px solid var(--border); }
.link-btn { background: none; border: none; color: var(--accent); font-size: 13px; cursor: pointer; padding: 0; }
.link-btn:hover { text-decoration: underline; }
.nav-links .link-btn { font-size: 14px; color: var(--muted); }
.nav-links .link-btn:hover { color: #fff; }

/* 商品表单 */
.product-form { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 6px; }
.product-form label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--muted); }
.product-form .span-2 { grid-column: span 2; }
.product-form textarea { resize: vertical; font-family: inherit; }
.form-actions { display: flex; gap: 10px; }

@media (max-width: 760px) {
  .detail { grid-template-columns: 1fr; }
  .detail-visual { min-height: 160px; }
  .product-form { grid-template-columns: 1fr; }
  .product-form .span-2 { grid-column: span 1; }
}

/* ── v3：视觉装饰与订单二维码 / 移动端收银台 ── */
.hero-with-deco {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: 1040px;
  margin: 0 auto;
  padding: 56px 20px 24px;
}
.hero-copy { min-width: 0; }
.hero-deco { width: min(340px, 40vw); flex-shrink: 0; }
.hero-badges { display: flex; gap: 10px; margin-top: 16px; flex-wrap: wrap; }
.hero-badges span {
  font-size: 12px;
  color: var(--accent);
  border: 1px solid rgba(245, 158, 11, 0.4);
  border-radius: 999px;
  padding: 4px 12px;
  background: rgba(245, 158, 11, 0.08);
}
@media (max-width: 760px) {
  .hero-with-deco { flex-direction: column; padding-top: 36px; }
  .hero-deco { width: 220px; }
}

.card-img {
  display: block;
  width: 100%;
  height: 130px;
  object-fit: cover;
  border-radius: 10px;
  margin-bottom: 12px;
  background: #0b1220;
  border: 1px solid var(--border);
}

.detail-visual img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.pay-qr-canvas {
  width: 200px;
  height: 200px;
  margin: 0 auto;
  background: #fff;
  border-radius: 12px;
  padding: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.pay-qr-canvas img,
.pay-qr-canvas canvas { width: 180px !important; height: 180px !important; }
.qr-order { margin-top: 10px; font-size: 12px; color: var(--muted); text-align: center; }
.qr-fallback { color: #0b1220; font-size: 12px; text-align: center; word-break: break-all; }
.qr-fallback code { display: block; margin-top: 6px; font-size: 11px; }

/* 移动端收银台（扫码打开） */
.checkout-mobile-body { background: #0b1220; min-height: 100vh; }
.checkout-mobile { max-width: 420px; margin: 0 auto; padding: 24px 16px; }
.cm-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 22px;
  text-align: center;
}
.cm-shop {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
}
.cm-amount { font-size: 40px; font-weight: 800; color: #fff; margin: 14px 0 6px; }
.cm-lines { margin: 14px 0 18px; text-align: left; }
.cm-hint { font-size: 12px; color: var(--muted); margin-bottom: 14px; }
.cm-title { color: #fff; margin-bottom: 10px; }
.cm-keys-title { color: var(--accent); font-size: 14px; margin: 14px 0 8px; }