/* ═══════════════════════════════════════════════════
   Android 16 · Material 3 Expressive Design System
   动态色彩 · 圆角卡片 · 表现力弹簧动画
   ═══════════════════════════════════════════════════ */

:root {
  /* M3 Expressive — 动态主色 (紫色调) */
  --m3-primary:        #6750A4;
  --m3-on-primary:     #FFFFFF;
  --m3-primary-container: #EADDFF;
  --m3-on-primary-container: #21005D;
  --m3-secondary:      #625B71;
  --m3-secondary-container: #E8DEF8;
  --m3-tertiary:       #7D5260;
  --m3-tertiary-container: #FFD8E4;
  --m3-error:          #B3261E;
  --m3-error-container: #F9DEDC;
  --m3-surface:        #FEF7FF;
  --m3-surface-dim:    #DED8E1;
  --m3-surface-bright: #FEF7FF;
  --m3-surface-container-lowest: #FFFFFF;
  --m3-surface-container-low: #F7F2FA;
  --m3-surface-container: #F3EDF7;
  --m3-surface-container-high: #ECE6F0;
  --m3-surface-container-highest: #E6E0E9;
  --m3-on-surface:     #1D1B20;
  --m3-on-surface-variant: #49454F;
  --m3-outline:        #79747E;
  --m3-outline-variant: #CAC4D0;
  --m3-success:        #2E7D32;
  --m3-success-container: #B8F6C1;

  /* M3 Expressive 形状 — 更大圆角 */
  --shape-xs: 4px;
  --shape-sm: 8px;
  --shape-md: 12px;
  --shape-lg: 16px;
  --shape-xl: 28px;
  --shape-full: 9999px;

  /* M3 Spring 动画 */
  --spring-emphasized: cubic-bezier(0.2, 0, 0, 1);
  --spring-standard: cubic-bezier(0.2, 0, 0, 1);
  --spring-decelerated: cubic-bezier(0, 0, 0, 1);

  /* 阴影 — M3 elevation */
  --elev-1: 0 1px 3px 0 rgba(0,0,0,0.08), 0 1px 2px 0 rgba(0,0,0,0.04);
  --elev-2: 0 3px 6px 0 rgba(0,0,0,0.10), 0 2px 4px 0 rgba(0,0,0,0.06);
  --elev-3: 0 6px 12px 0 rgba(0,0,0,0.12), 0 4px 8px 0 rgba(0,0,0,0.08);
  --elev-4: 0 10px 20px 0 rgba(0,0,0,0.14), 0 6px 10px 0 rgba(0,0,0,0.10);

  --max-width: 960px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'Google Sans', 'Roboto', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
  background: var(--m3-surface);
  color: var(--m3-on-surface);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

/* ─── 顶部应用栏 (M3 Top App Bar) ─── */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--m3-surface-container);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--m3-outline-variant);
  transition: box-shadow 0.3s var(--spring-emphasized);
}
.topbar.scrolled { box-shadow: var(--elev-2); }
.topbar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.topbar-logo {
  font-size: 24px;
  line-height: 1;
}
.topbar-title {
  font-size: 20px;
  font-weight: 500;
  flex: 1;
  color: var(--m3-on-surface);
}
.topbar-actions {
  display: flex;
  gap: 8px;
}
.topbar-link {
  text-decoration: none;
  color: var(--m3-on-surface-variant);
  padding: 8px 16px;
  border-radius: var(--shape-full);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s var(--spring-standard);
}
.topbar-link:hover {
  background: var(--m3-surface-container-high);
  color: var(--m3-primary);
}

/* ─── Hero 区域 ─── */
.hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 20px 32px;
  text-align: center;
}
.hero h1 {
  font-size: 36px;
  font-weight: 400;
  letter-spacing: -0.5px;
  color: var(--m3-on-surface);
  margin-bottom: 12px;
  line-height: 1.3;
}
.hero h1 .accent {
  color: var(--m3-primary);
  font-weight: 600;
}
.hero p {
  font-size: 16px;
  color: var(--m3-on-surface-variant);
  max-width: 480px;
  margin: 0 auto;
}
.hero-chips {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-top: 20px;
  flex-wrap: wrap;
}
.m3-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--shape-sm);
  border: 1px solid var(--m3-outline-variant);
  background: var(--m3-surface-container-low);
  font-size: 13px;
  color: var(--m3-on-surface-variant);
  font-weight: 500;
}

/* ─── 商品网格 ─── */
.section-head {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.section-head h2 {
  font-size: 22px;
  font-weight: 500;
}
.section-head .material-icon {
  color: var(--m3-primary);
}

.product-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px 48px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

/* ─── 商品卡片 ─── */
.product-card {
  background: var(--m3-surface-container-lowest);
  border-radius: var(--shape-xl);
  overflow: hidden;
  cursor: pointer;
  transition: all 0.3s var(--spring-emphasized);
  border: 1px solid var(--m3-outline-variant);
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  box-shadow: var(--elev-3);
  transform: translateY(-2px);
  border-color: var(--m3-primary);
}
.product-card:active {
  transform: translateY(0) scale(0.99);
}

.card-media {
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 56px;
  background: linear-gradient(135deg, var(--m3-primary-container), var(--m3-secondary-container));
}
.card-body {
  padding: 16px 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.card-category {
  font-size: 11px;
  color: var(--m3-primary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}
.card-title {
  font-size: 16px;
  font-weight: 500;
  color: var(--m3-on-surface);
  margin-bottom: 6px;
  line-height: 1.4;
}
.card-desc {
  font-size: 13px;
  color: var(--m3-on-surface-variant);
  flex: 1;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-price {
  font-size: 22px;
  font-weight: 600;
  color: var(--m3-primary);
}
.card-price .currency { font-size: 14px; margin-right: 2px; }
.card-stock {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: var(--shape-full);
  font-weight: 500;
}
.card-stock.in-stock {
  background: var(--m3-success-container);
  color: var(--m3-success);
}
.card-stock.out-stock {
  background: var(--m3-error-container);
  color: var(--m3-error);
}

/* ─── 按钮 ─── */
.m3-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 24px;
  height: 44px;
  border-radius: var(--shape-full);
  border: none;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s var(--spring-standard);
  text-decoration: none;
}
.m3-btn-filled {
  background: var(--m3-primary);
  color: var(--m3-on-primary);
}
.m3-btn-filled:hover { box-shadow: var(--elev-2); }
.m3-btn-filled:active { transform: scale(0.98); }
.m3-btn-tonal {
  background: var(--m3-secondary-container);
  color: var(--m3-on-surface);
}
.m3-btn-tonal:hover { box-shadow: var(--elev-1); }
.m3-btn-outlined {
  background: transparent;
  border: 1px solid var(--m3-outline);
  color: var(--m3-primary);
}
.m3-btn-outlined:hover { background: var(--m3-primary-container); color: var(--m3-on-primary-container); }
.m3-btn-text {
  background: transparent;
  color: var(--m3-primary);
  padding: 0 12px;
}
.m3-btn:disabled {
  opacity: 0.38;
  cursor: not-allowed;
}

/* ─── 商品详情页 ─── */
.detail-wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 32px 20px;
}
.detail-card {
  background: var(--m3-surface-container-lowest);
  border-radius: var(--shape-xl);
  overflow: hidden;
  border: 1px solid var(--m3-outline-variant);
  box-shadow: var(--elev-1);
}
.detail-media {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 80px;
  background: linear-gradient(135deg, var(--m3-primary-container), var(--m3-tertiary-container));
}
.detail-body { padding: 28px 32px 32px; }
.detail-category {
  font-size: 12px;
  color: var(--m3-primary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 8px;
}
.detail-title {
  font-size: 28px;
  font-weight: 500;
  margin-bottom: 8px;
}
.detail-desc {
  font-size: 15px;
  color: var(--m3-on-surface-variant);
  margin-bottom: 24px;
}
.detail-info-row {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.info-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--shape-full);
  background: var(--m3-surface-container-high);
  font-size: 14px;
  font-weight: 500;
}
.info-pill .material-icon { font-size: 18px; color: var(--m3-primary); }

.detail-buy-section {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 24px;
  background: var(--m3-surface-container);
  border-radius: var(--shape-lg);
}
.detail-price {
  font-size: 36px;
  font-weight: 700;
  color: var(--m3-primary);
}
.detail-price .currency { font-size: 18px; }

/* ─── 表单 ─── */
.m3-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 16px;
}
.m3-field label {
  font-size: 12px;
  color: var(--m3-on-surface-variant);
  font-weight: 500;
  padding-left: 4px;
}
.m3-field input {
  padding: 14px 16px;
  border: 1px solid var(--m3-outline);
  border-radius: var(--shape-sm);
  font-size: 15px;
  font-family: inherit;
  background: var(--m3-surface-container-lowest);
  color: var(--m3-on-surface);
  transition: all 0.2s var(--spring-standard);
  outline: none;
}
.m3-field input:focus {
  border-color: var(--m3-primary);
  border-width: 2px;
  padding: 13px 15px;
  box-shadow: none;
}

/* ─── 订单结果页 ─── */
.order-wrap {
  max-width: 640px;
  margin: 0 auto;
  padding: 32px 20px;
}
.order-card {
  background: var(--m3-surface-container-lowest);
  border-radius: var(--shape-xl);
  overflow: hidden;
  border: 1px solid var(--m3-outline-variant);
  box-shadow: var(--elev-1);
}
.order-header {
  padding: 32px;
  text-align: center;
  background: linear-gradient(135deg, var(--m3-success-container), var(--m3-surface-container));
}
.order-header .success-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--m3-success);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  margin: 0 auto 16px;
}
.order-header h2 {
  font-size: 24px;
  font-weight: 500;
  margin-bottom: 4px;
}
.order-header p {
  color: var(--m3-on-surface-variant);
  font-size: 14px;
}
.order-body { padding: 24px 32px 32px; }
.order-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--m3-outline-variant);
}
.order-row:last-child { border-bottom: none; }
.order-row .label {
  font-size: 14px;
  color: var(--m3-on-surface-variant);
}
.order-row .value {
  font-size: 14px;
  font-weight: 500;
  color: var(--m3-on-surface);
}
.card-key-box {
  margin-top: 20px;
  padding: 20px;
  background: var(--m3-primary-container);
  border-radius: var(--shape-lg);
  text-align: center;
}
.card-key-box .label {
  font-size: 12px;
  color: var(--m3-on-primary-container);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}
.card-key-box .key {
  font-size: 20px;
  font-weight: 700;
  color: var(--m3-on-primary-container);
  font-family: 'Roboto Mono', monospace;
  letter-spacing: 1px;
  word-break: break-all;
}
.copy-btn {
  margin-top: 12px;
  cursor: pointer;
  background: transparent;
  border: none;
  color: var(--m3-on-primary-container);
  font-size: 13px;
  font-weight: 500;
  text-decoration: underline;
  font-family: inherit;
}

/* ─── FAB ─── */
.fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--m3-primary);
  color: var(--m3-on-primary);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  cursor: pointer;
  box-shadow: var(--elev-3);
  transition: all 0.2s var(--spring-emphasized);
  z-index: 90;
  text-decoration: none;
}
.fab:hover { box-shadow: var(--elev-4); transform: scale(1.05); }
.fab:active { transform: scale(0.95); }

/* ─── Snackbar / Flash ─── */
.flash-bar {
  max-width: var(--max-width);
  margin: 16px auto 0;
  padding: 0 20px;
}
.flash-msg {
  padding: 14px 16px;
  border-radius: var(--shape-sm);
  font-size: 14px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  animation: slideDown 0.3s var(--spring-emphasized);
}
.flash-msg.error { background: var(--m3-error-container); color: var(--m3-error); }
.flash-msg.success { background: var(--m3-success-container); color: var(--m3-success); }

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── 空状态 ─── */
.empty-state {
  text-align: center;
  padding: 64px 20px;
  color: var(--m3-on-surface-variant);
}
.empty-state .icon { font-size: 64px; margin-bottom: 16px; }
.empty-state h3 { font-size: 20px; font-weight: 500; margin-bottom: 8px; }

/* ─── 底部 ─── */
.footer {
  background: var(--m3-surface-container);
  border-top: 1px solid var(--m3-outline-variant);
  padding: 32px 20px;
  text-align: center;
  color: var(--m3-on-surface-variant);
  font-size: 13px;
}
.footer a { color: var(--m3-primary); text-decoration: none; }

/* ─── Material Icons (纯CSS替代) ─── */
.material-icon {
  display: inline-flex;
  font-style: normal;
  vertical-align: middle;
}

/* ─── 响应式 ─── */
@media (max-width: 600px) {
  .hero h1 { font-size: 26px; }
  .product-grid { grid-template-columns: 1fr; }
  .detail-title { font-size: 22px; }
  .detail-buy-section { flex-direction: column; align-items: stretch; }
  .topbar-link { display: none; }
  .topbar-link.always-show { display: inline-flex; }
}

/* ─── 加载 / 入场动画 ─── */
.fade-in {
  animation: fadeIn 0.4s var(--spring-emphasized);
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.product-card { animation: fadeIn 0.4s var(--spring-emphasized) both; }
.product-card:nth-child(1) { animation-delay: 0.02s; }
.product-card:nth-child(2) { animation-delay: 0.06s; }
.product-card:nth-child(3) { animation-delay: 0.10s; }
.product-card:nth-child(4) { animation-delay: 0.14s; }
.product-card:nth-child(5) { animation-delay: 0.18s; }
.product-card:nth-child(6) { animation-delay: 0.22s; }


/* ═══════════════════════════════════════════════════
   管理后台样式
   ═══════════════════════════════════════════════════ */

.admin-body { background: var(--m3-surface-container-low); }

/* 管理员布局 */
.admin-layout {
  display: flex;
  min-height: 100vh;
}
.admin-sidebar {
  width: 240px;
  background: var(--m3-surface-container);
  border-right: 1px solid var(--m3-outline-variant);
  padding: 16px 0;
  flex-shrink: 0;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.admin-sidebar .logo {
  padding: 8px 24px 20px;
  font-size: 18px;
  font-weight: 600;
  color: var(--m3-primary);
  border-bottom: 1px solid var(--m3-outline-variant);
  margin-bottom: 12px;
}
.admin-nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 24px;
  text-decoration: none;
  color: var(--m3-on-surface-variant);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s var(--spring-standard);
  border-left: 3px solid transparent;
}
.admin-nav-item:hover { background: var(--m3-surface-container-high); }
.admin-nav-item.active {
  background: var(--m3-primary-container);
  color: var(--m3-on-primary-container);
  border-left-color: var(--m3-primary);
  font-weight: 600;
}
.admin-nav-item .icon { font-size: 18px; width: 24px; text-align: center; }
.admin-main { flex: 1; padding: 24px 32px; max-width: 1200px; }
.admin-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}
.admin-topbar h1 { font-size: 24px; font-weight: 500; }
.admin-user {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
}
.admin-user .avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--m3-primary);
  color: var(--m3-on-primary);
  display: flex; align-items: center; justify-content: center;
  font-weight: 600; font-size: 14px;
}

/* 统计卡片 */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}
.stat-card {
  background: var(--m3-surface-container-lowest);
  border-radius: var(--shape-lg);
  padding: 20px 24px;
  border: 1px solid var(--m3-outline-variant);
}
.stat-card .label { font-size: 13px; color: var(--m3-on-surface-variant); font-weight: 500; }
.stat-card .value { font-size: 28px; font-weight: 700; color: var(--m3-on-surface); margin-top: 4px; }
.stat-card .icon { font-size: 28px; float: right; }
.stat-card.highlight .value { color: var(--m3-primary); }
.stat-card.success .value { color: var(--m3-success); }
.stat-card.warning .value { color: #E65100; }
.stat-card.error .value { color: var(--m3-error); }

/* 图表容器 */
.chart-container {
  background: var(--m3-surface-container-lowest);
  border-radius: var(--shape-lg);
  padding: 24px;
  border: 1px solid var(--m3-outline-variant);
  margin-bottom: 24px;
}
.chart-container h3 { font-size: 16px; font-weight: 600; margin-bottom: 16px; }
.bar-chart { display: flex; gap: 8px; align-items: flex-end; height: 160px; padding-top: 20px; }
.bar-chart .bar-col { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 6px; }
.bar-chart .bar {
  width: 100%;
  max-width: 48px;
  background: linear-gradient(180deg, var(--m3-primary), var(--m3-primary-container));
  border-radius: 4px 4px 0 0;
  min-height: 4px;
  transition: height 0.5s var(--spring-emphasized);
  position: relative;
}

/* ═══════════════════════════════════════════════════
   Dark Mode - Material 3 Dark Theme
   ═══════════════════════════════════════════════════ */

[data-theme="dark"] {
  --m3-primary: #D0BCFF;
  --m3-on-primary: #381E72;
  --m3-primary-container: #4F378B;
  --m3-on-primary-container: #EADDFF;
  --m3-secondary: #CCC2DC;
  --m3-on-secondary: #332D41;
  --m3-secondary-container: #4A4458;
  --m3-on-secondary-container: #E8DEF8;
  --m3-tertiary: #EFB8C8;
  --m3-on-tertiary: #492532;
  --m3-tertiary-container: #633B48;
  --m3-error: #F2B8B5;
  --m3-on-error: #601410;
  --m3-error-container: #8C1D18;
  --m3-surface: #141218;
  --m3-surface-dim: #141218;
  --m3-surface-bright: #3B383E;
  --m3-surface-container-lowest: #0F0D13;
  --m3-surface-container-low: #1D1B20;
  --m3-surface-container: #211F26;
  --m3-surface-container-high: #2B2930;
  --m3-surface-container-highest: #36343B;
  --m3-on-surface: #E6E0E9;
  --m3-on-surface-variant: #CAC4D0;
  --m3-outline: #938F99;
  --m3-outline-variant: #49454F;
  --m3-success: #66BB6A;
  --m3-success-container: #1B5E20;
}

[data-theme="dark"] .bar-chart .bar {
  background: linear-gradient(180deg, var(--m3-primary), var(--m3-surface-container-high));
}
[data-theme="dark"] .card-media {
  background: linear-gradient(135deg, var(--m3-primary-container), var(--m3-surface-container-highest));
}
[data-theme="dark"] .login-wrap {
  background: linear-gradient(135deg, var(--m3-surface), var(--m3-surface-dim));
}
[data-theme="dark"] .announcement-item {
  background: var(--m3-surface-container-high);
}

.theme-toggle {
  background: none; border: none; font-size: 18px; cursor: pointer;
  padding: 8px; border-radius: var(--shape-full);
  transition: all 0.3s var(--spring-emphasized); line-height: 1;
}
.theme-toggle:hover { background: var(--m3-surface-container-high); transform: rotate(15deg); }

/* Featured section */
.featured-section {
  max-width: var(--max-width); margin: 0 auto; padding: 0 20px 20px;
}
.featured-scroll {
  display: flex; gap: 12px; overflow-x: auto; padding: 4px 0 12px;
  scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch; scrollbar-width: none;
}
.featured-scroll::-webkit-scrollbar { display: none; }
.featured-item {
  flex: 0 0 auto; width: 180px; scroll-snap-align: start; cursor: pointer;
  background: var(--m3-surface-container-lowest); border-radius: var(--shape-lg);
  padding: 16px; text-align: center; border: 1px solid var(--m3-outline-variant);
  transition: all 0.3s var(--spring-emphasized);
  text-decoration: none; color: inherit; display: block;
}
.featured-item:hover {
  border-color: var(--m3-primary); box-shadow: var(--elev-2); transform: translateY(-2px);
}
.featured-item .emoji { font-size: 36px; margin-bottom: 8px; }
.featured-item .name { font-size: 13px; font-weight: 500; }
.featured-item .price { font-size: 15px; font-weight: 700; color: var(--m3-primary); margin-top: 4px; }
.featured-item .badge {
  display: inline-block; font-size: 10px; padding: 2px 8px;
  background: var(--m3-primary); color: var(--m3-on-primary);
  border-radius: var(--shape-full); margin-bottom: 6px; font-weight: 600;
}
.bar-chart .bar:hover { opacity: 0.8; }
.bar-chart .bar-label { font-size: 11px; color: var(--m3-on-surface-variant); }
.bar-chart .bar-value { font-size: 10px; color: var(--m3-primary); font-weight: 600; }

/* 数据表格 */
.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--m3-surface-container-lowest);
  border-radius: var(--shape-lg);
  overflow: hidden;
  border: 1px solid var(--m3-outline-variant);
}
.data-table th {
  background: var(--m3-surface-container);
  padding: 12px 16px;
  text-align: left;
  font-size: 13px;
  font-weight: 600;
  color: var(--m3-on-surface-variant);
  border-bottom: 1px solid var(--m3-outline-variant);
}
.data-table td {
  padding: 12px 16px;
  font-size: 13px;
  border-bottom: 1px solid var(--m3-outline-variant);
  color: var(--m3-on-surface);
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--m3-surface-container-low); }

/* 状态标签 */
.status-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--shape-full);
  font-size: 12px;
  font-weight: 600;
}
.status-paid { background: var(--m3-success-container); color: var(--m3-success); }
.status-pending { background: #FFF3E0; color: #E65100; }
.status-failed { background: var(--m3-error-container); color: var(--m3-error); }

/* 表单卡片 */
.form-card {
  background: var(--m3-surface-container-lowest);
  border-radius: var(--shape-lg);
  padding: 24px 28px;
  border: 1px solid var(--m3-outline-variant);
  margin-bottom: 20px;
}
.form-card h3 { font-size: 16px; font-weight: 600; margin-bottom: 16px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-grid .full { grid-column: 1 / -1; }

/* 管理员登录 */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--m3-primary-container), var(--m3-surface));
}
.login-card {
  background: var(--m3-surface-container-lowest);
  border-radius: var(--shape-xl);
  padding: 40px;
  width: 360px;
  border: 1px solid var(--m3-outline-variant);
  box-shadow: var(--elev-3);
}
.login-card .logo { text-align: center; font-size: 40px; margin-bottom: 8px; }
.login-card h2 { text-align: center; font-size: 22px; font-weight: 500; margin-bottom: 24px; }

/* 分页 */
.pagination { display: flex; gap: 6px; justify-content: center; margin-top: 24px; }
.pagination a, .pagination span {
  padding: 8px 14px;
  border-radius: var(--shape-sm);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  border: 1px solid var(--m3-outline-variant);
  color: var(--m3-on-surface-variant);
  background: var(--m3-surface-container-lowest);
  transition: all 0.2s;
}
.pagination a:hover { border-color: var(--m3-primary); color: var(--m3-primary); }
.pagination .current {
  background: var(--m3-primary);
  color: var(--m3-on-primary);
  border-color: var(--m3-primary);
}

/* 公告条 */
.announcement-bar {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 8px 20px 0;
}
.announcement-item {
  background: var(--m3-tertiary-container);
  color: var(--m3-on-surface);
  padding: 10px 16px;
  border-radius: var(--shape-sm);
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* 搜索栏 */
.search-bar {
  max-width: var(--max-width);
  margin: 0 auto 16px;
  padding: 0 20px;
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}
.search-bar input {
  flex: 1;
  min-width: 200px;
  padding: 10px 16px;
  border: 1px solid var(--m3-outline);
  border-radius: var(--shape-full);
  font-size: 14px;
  font-family: inherit;
  background: var(--m3-surface-container-lowest);
  outline: none;
}
.search-bar input:focus { border-color: var(--m3-primary); border-width: 2px; padding: 9px 15px; }

/* 分类筛选 */
.category-chips {
  max-width: var(--max-width);
  margin: 0 auto 12px;
  padding: 0 20px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.cat-chip {
  padding: 6px 16px;
  border-radius: var(--shape-full);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid var(--m3-outline-variant);
  color: var(--m3-on-surface-variant);
  background: var(--m3-surface-container-low);
  transition: all 0.2s;
}
.cat-chip:hover { border-color: var(--m3-primary); color: var(--m3-primary); }
.cat-chip.active {
  background: var(--m3-primary);
  color: var(--m3-on-primary);
  border-color: var(--m3-primary);
}

/* 原价划线 */
.original-price {
  font-size: 14px;
  color: var(--m3-on-surface-variant);
  text-decoration: line-through;
  margin-left: 6px;
}

/* 支付页面 */
.pay-wrap { max-width: 560px; margin: 0 auto; padding: 32px 20px; }
.pay-card {
  background: var(--m3-surface-container-lowest);
  border-radius: var(--shape-xl);
  overflow: hidden;
  border: 1px solid var(--m3-outline-variant);
  box-shadow: var(--elev-1);
}
.pay-header {
  padding: 28px 32px;
  background: linear-gradient(135deg, var(--m3-primary-container), var(--m3-surface-container));
}
.pay-header h2 { font-size: 22px; font-weight: 500; margin-bottom: 8px; }
.pay-amount {
  font-size: 36px;
  font-weight: 700;
  color: var(--m3-primary);
}
.pay-amount .currency { font-size: 18px; }
.pay-body { padding: 28px 32px 32px; }
.pay-methods { display: flex; gap: 12px; margin-bottom: 24px; }
.pay-method {
  flex: 1;
  padding: 16px;
  border: 2px solid var(--m3-outline-variant);
  border-radius: var(--shape-md);
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  background: var(--m3-surface-container-lowest);
}
.pay-method:hover { border-color: var(--m3-primary); }
.pay-method.selected { border-color: var(--m3-primary); background: var(--m3-primary-container); }
.pay-method .icon { font-size: 32px; }
.pay-method .name { font-size: 13px; font-weight: 500; margin-top: 4px; }
.pay-qr-area {
  text-align: center;
  padding: 24px;
  background: var(--m3-surface-container);
  border-radius: var(--shape-lg);
  margin-bottom: 20px;
}
.pay-qr-placeholder {
  width: 200px; height: 200px;
  margin: 0 auto 16px;
  background: var(--m3-surface-container-lowest);
  border-radius: var(--shape-md);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px dashed var(--m3-outline);
}

/* 相关推荐 */
.related-section { max-width: var(--max-width); margin: 24px auto 0; padding: 0 20px; }
.related-section h3 { font-size: 18px; font-weight: 500; margin-bottom: 16px; }

/* 管理员移动端 */
@media (max-width: 768px) {
  .admin-sidebar { width: 60px; }
  .admin-sidebar .logo { font-size: 12px; padding: 8px 8px 16px; text-align: center; }
  .admin-nav-item { padding: 12px 8px; justify-content: center; }
  .admin-nav-item .text { display: none; }
  .admin-main { padding: 16px; }
  .form-grid { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
}