/* ============================
   大橘大利工作室 - 代购订单管理工作台
   Design System
   ============================ */

:root {
  /* 主色 - 藏蓝系列 */
  --color-navy: #2E5C8A;
  --color-navy-dark: #234B73;
  --color-navy-light: #4A7FB5;
  --color-navy-bg: #E8F0F8;

  /* CTA 色 */
  --color-cta-red: #E64533;
  --color-cta-red-dark: #C73A28;
  --color-cta-orange: #F0703C;
  --color-cta-orange-dark: #D85D2C;

  /* 大橘大利品牌色 */
  --color-orange-brand: #FF8C42;
  --color-orange-soft: #FFB07A;
  --color-gold: #E8B86A;

  /* 状态色 */
  --color-success: #2E8B57;
  --color-warning: #E8A832;
  --color-danger: #E64533;
  --color-info: #4A7FB5;

  /* 中性色 */
  --color-bg: #F5F7FA;
  --color-card: #FFFFFF;
  --color-border: #E5EAF0;
  --color-divider: #EDF1F6;
  --color-text-primary: #1F2A3C;
  --color-text-secondary: #6B7888;
  --color-text-tertiary: #9AA5B4;
  --color-text-placeholder: #B4BCC8;

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(31, 42, 60, 0.04);
  --shadow-md: 0 2px 8px rgba(31, 42, 60, 0.08);
  --shadow-lg: 0 8px 24px rgba(31, 42, 60, 0.12);
  --shadow-fab: 0 4px 12px rgba(230, 69, 51, 0.35);

  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;
  --radius-pill: 999px;

  /* 间距 */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;

  /* 字号 */
  --text-xs: 11px;
  --text-sm: 12px;
  --text-base: 14px;
  --text-md: 15px;
  --text-lg: 16px;
  --text-xl: 18px;
  --text-2xl: 22px;
  --text-3xl: 28px;

  /* 字体 */
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  --font-num: "SF Mono", "Roboto Mono", Menlo, monospace;
}

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

html, body {
  height: 100%;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--color-text-primary);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  overflow: hidden;
}

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  border: none;
  outline: none;
  background: transparent;
}

ul, ol { list-style: none; }

/* ============================
   主应用布局
   ============================ */

.app {
  display: grid;
  grid-template-columns: 220px 1fr;
  height: 100vh;
  background: var(--color-bg);
}

/* ============================
   侧边栏 - 永久显示（区别于手机版Drawer）
   ============================ */

.sidebar {
  background: var(--color-card);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.sidebar-header {
  padding: var(--space-6) var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-divider);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.brand-logo {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-cta-red) 0%, var(--color-orange-brand) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: white;
  font-weight: 600;
  box-shadow: 0 2px 6px rgba(230, 69, 51, 0.25);
  flex-shrink: 0;
}

.brand-info {
  flex: 1;
  min-width: 0;
}

.brand-name {
  font-size: var(--text-md);
  font-weight: 600;
  color: var(--color-text-primary);
  line-height: 1.3;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand-sub {
  font-size: 11px;
  color: var(--color-text-tertiary);
  letter-spacing: 0.2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.4;
}

.sidebar-section {
  padding: var(--space-5) var(--space-3) var(--space-3);
}

.sidebar-section-title {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  font-weight: 600;
  padding: 0 var(--space-3);
  margin-bottom: var(--space-3);
}

.sidebar-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  margin-bottom: 2px;
  cursor: pointer;
  transition: background 0.15s;
  color: var(--color-text-secondary);
  font-size: var(--text-base);
}

.sidebar-item:hover {
  background: var(--color-navy-bg);
  color: var(--color-navy);
}

.sidebar-item.active {
  background: var(--color-navy);
  color: white;
}

.sidebar-item.active .item-icon {
  background: rgba(255, 255, 255, 0.2);
  color: white;
}

.item-icon {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--color-navy-bg);
  color: var(--color-navy);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-base);
  font-weight: 600;
  flex-shrink: 0;
}

.item-icon.icon-green { background: #E8F5EE; color: var(--color-success); }
.item-icon.icon-orange { background: #FFF1EA; color: var(--color-cta-orange); }
.item-icon.icon-red { background: #FCE9E5; color: var(--color-cta-red); }

.sidebar-item .item-count {
  margin-left: auto;
  background: var(--color-cta-red);
  color: white;
  font-size: var(--text-xs);
  padding: 1px 7px;
  border-radius: var(--radius-pill);
  font-weight: 500;
}

.sidebar-item.active .item-count {
  background: rgba(255, 255, 255, 0.3);
}

.sidebar-footer {
  margin-top: auto;
  padding: var(--space-4) var(--space-3);
  border-top: 1px solid var(--color-divider);
}

.share-btn {
  width: 100%;
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-orange-brand) 100%);
  color: white;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-pill);
  font-size: var(--text-base);
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  transition: transform 0.15s, box-shadow 0.15s;
  box-shadow: 0 2px 6px rgba(232, 184, 106, 0.3);
}

.share-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(232, 184, 106, 0.4);
}

.share-hint {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  text-align: center;
  margin-top: var(--space-2);
  line-height: 1.5;
}

/* ============================
   主内容区
   ============================ */

.main {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* 顶部Tab栏 */
.topbar {
  background: var(--color-card);
  border-bottom: 1px solid var(--color-border);
  padding: 0 var(--space-5);
  display: flex;
  align-items: center;
  height: 64px;
  gap: var(--space-4);
  flex-shrink: 0;
}

.page-title-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 180px;
}

.page-title-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 18px;
}

.page-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-primary);
  line-height: 1.2;
}

.page-subtitle {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

.tabs {
  display: flex;
  align-items: center;
  gap: 0;
  margin-left: auto;
}

.tab {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  cursor: pointer;
  position: relative;
  transition: color 0.15s;
  border-radius: var(--radius-md);
  font-weight: 500;
  white-space: nowrap;
}

.tab:hover {
  color: var(--color-navy);
}

.tab.active {
  color: var(--color-navy);
  background: var(--color-navy-bg);
}

.tab-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-cta-red);
  color: white;
  font-size: var(--text-xs);
  height: 18px;
  min-width: 18px;
  padding: 0 5px;
  border-radius: var(--radius-pill);
  margin-left: 6px;
  font-weight: 500;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-left: auto;
  flex-shrink: 0;
}

.icon-btn {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: background 0.15s, color 0.15s;
  position: relative;
}

.icon-btn:hover {
  background: var(--color-navy-bg);
  color: var(--color-navy);
}

.icon-btn .dot {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-cta-red);
}

.user-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-orange-brand), var(--color-cta-orange));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  cursor: pointer;
}

/* ============================
   内容区
   ============================ */

.content {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-6);
  position: relative;
}

.toolbar {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  box-shadow: var(--shadow-sm);
}

.search-input {
  flex: 1;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-bg);
  border-radius: var(--radius-pill);
  padding: 0 var(--space-4);
  height: 40px;
}

.search-input input {
  flex: 1;
  font-size: var(--text-base);
  color: var(--color-text-primary);
}

.search-input input::placeholder {
  color: var(--color-text-placeholder);
}

.search-icon {
  color: var(--color-text-tertiary);
}

.search-mode-toggle {
  display: flex;
  background: var(--color-bg);
  border-radius: var(--radius-pill);
  padding: 3px;
}

.search-mode-btn {
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  transition: all 0.15s;
}

.search-mode-btn.active {
  background: var(--color-navy);
  color: white;
}

/* ============================
   统计卡片（首页+记录统计）
   ============================ */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.stat-card {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--color-navy);
}

.stat-card.cost::before { background: var(--color-warning); }
.stat-card.income::before { background: var(--color-success); }
.stat-card.profit::before { background: var(--color-cta-red); }
.stat-card.margin::before { background: var(--color-navy-light); }

.stat-label {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.stat-value {
  font-size: var(--text-3xl);
  font-weight: 600;
  color: var(--color-text-primary);
  font-family: var(--font-num);
  letter-spacing: -0.5px;
}

.stat-card.cost .stat-value { color: var(--color-warning); }
.stat-card.income .stat-value { color: var(--color-success); }
.stat-card.profit .stat-value { color: var(--color-cta-red); }

.stat-trend {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: var(--text-xs);
  margin-top: var(--space-2);
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  background: #E8F5EE;
  color: var(--color-success);
}

.stat-trend.down {
  background: #FCE9E5;
  color: var(--color-cta-red);
}

/* ============================
   订单列表
   ============================ */

.list-section {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.list-header {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-divider);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.list-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.list-meta {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}

/* 商品汇总 - 分类聚合 */
.category-group {
  border-bottom: 1px solid var(--color-divider);
}

.category-group:last-child {
  border-bottom: none;
}

.category-header {
  padding: var(--space-3) var(--space-5);
  background: linear-gradient(to right, var(--color-navy-bg), transparent);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.category-name {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-navy);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.category-count {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.category-toggle {
  transition: transform 0.2s;
}

.category-group.collapsed .category-toggle {
  transform: rotate(-90deg);
}

.product-row {
  padding: var(--space-3) var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  border-top: 1px solid var(--color-divider);
  transition: background 0.15s;
}

.product-row:hover {
  background: var(--color-bg);
}

.product-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-navy-bg);
  color: var(--color-navy);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.product-info {
  flex: 1;
  min-width: 0;
}

.product-name {
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text-primary);
  margin-bottom: 2px;
}

.product-sub {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.product-qty {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--color-navy-bg);
  color: var(--color-navy);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  font-size: var(--text-sm);
  font-weight: 600;
  font-family: var(--font-num);
}

.product-action {
  display: flex;
  gap: var(--space-2);
}

.btn-icon-text {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  transition: all 0.15s;
}

.btn-icon-text.primary {
  background: var(--color-navy-bg);
  color: var(--color-navy);
}

.btn-icon-text.primary:hover {
  background: var(--color-navy);
  color: white;
}

.btn-icon-text.success {
  background: #E8F5EE;
  color: var(--color-success);
}

.btn-icon-text.danger {
  background: #FCE9E5;
  color: var(--color-danger);
}

/* 订单子行（商品汇总视图下的单条订单） */
.order-item-row {
  padding-left: 64px !important;
  background: var(--color-bg) !important;
  border-top: 1px dashed var(--color-divider);
}

.order-item-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-navy-bg);
  color: var(--color-navy);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
  flex-shrink: 0;
}

.order-item-actions {
  flex-shrink: 0;
}

.order-item-actions .btn-icon-text {
  padding: 5px 8px;
  font-size: 13px;
  min-width: 32px;
  justify-content: center;
}

/* 买家汇总 */
.buyer-group {
  padding: var(--space-3) var(--space-5);
  border-bottom: 1px solid var(--color-divider);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  transition: background 0.15s;
  cursor: pointer;
}

.buyer-group:hover {
  background: var(--color-bg);
}

.buyer-group:last-child {
  border-bottom: none;
}

.buyer-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-navy-light), var(--color-navy));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-md);
  font-weight: 600;
  flex-shrink: 0;
}

.buyer-info {
  flex: 1;
  min-width: 0;
}

.buyer-name {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 2px;
}

.buyer-detail {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

.buyer-summary {
  text-align: right;
}

.buyer-amount {
  font-size: var(--text-md);
  font-weight: 600;
  color: var(--color-cta-red);
  font-family: var(--font-num);
}

.buyer-count {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  margin-top: 2px;
}

/* 订单卡片（收款发货） */
.order-card {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  margin-bottom: var(--space-3);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.order-card:hover {
  border-color: var(--color-navy-light);
  box-shadow: var(--shadow-md);
}

.order-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3);
}

.order-customer {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-md);
  font-weight: 600;
  color: var(--color-text-primary);
}

.order-customer .mini-avatar {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-navy-light), var(--color-navy));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 600;
}

.order-id {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  font-family: var(--font-num);
}

.order-product {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-3);
  border-bottom: 1px dashed var(--color-divider);
}

.order-product-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--color-navy-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--color-navy);
  flex-shrink: 0;
}

.order-product-info {
  flex: 1;
  min-width: 0;
}

.order-product-name {
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text-primary);
}

.order-product-meta {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  margin-top: 2px;
}

.order-amount {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-cta-red);
  font-family: var(--font-num);
}

.order-amount .qty {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  font-weight: 400;
  margin-right: 4px;
}

.order-status-row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
}

.status-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-size: var(--text-xs);
  font-weight: 500;
}

.status-tag.pay-unpaid { background: #FCE9E5; color: var(--color-cta-red); }
.status-tag.pay-deposit { background: #FFF4DD; color: var(--color-warning); }
.status-tag.pay-paid { background: #E8F5EE; color: var(--color-success); }
.status-tag.ship-unshipped { background: var(--color-navy-bg); color: var(--color-navy); }
.status-tag.ship-shipped { background: #E8F5EE; color: var(--color-success); }

.order-actions {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.btn {
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  transition: all 0.15s;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.btn-primary {
  background: var(--color-navy);
  color: white;
}
.btn-primary:hover { background: var(--color-navy-dark); }

.btn-success {
  background: var(--color-success);
  color: white;
}
.btn-success:hover { background: #246B45; }

.btn-warn {
  background: var(--color-warning);
  color: white;
}

.btn-outline {
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  background: var(--color-card);
}
.btn-outline:hover {
  border-color: var(--color-navy);
  color: var(--color-navy);
}

.btn-cta {
  background: var(--color-cta-red);
  color: white;
}
.btn-cta:hover { background: var(--color-cta-red-dark); }

.btn-orange {
  background: var(--color-cta-orange);
  color: white;
}
.btn-orange:hover { background: var(--color-cta-orange-dark); }

.btn-ghost {
  color: var(--color-text-secondary);
}
.btn-ghost:hover { background: var(--color-bg); }

/* ============================
   空状态
   ============================ */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-12) var(--space-6);
  text-align: center;
}

.empty-icon {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-navy-bg), #D5E2F1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  margin-bottom: var(--space-4);
  color: var(--color-navy-light);
}

.empty-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.empty-desc {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-4);
  max-width: 320px;
  line-height: 1.6;
}

/* ============================
   底部视图切换栏（仅预购清单有FAB）
   ============================ */

.bottom-bar {
  position: sticky;
  bottom: 0;
  left: 0;
  right: 0;
  margin-top: var(--space-4);
  background: var(--color-card);
  border-top: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-md);
}

.view-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  color: var(--color-text-tertiary);
  transition: color 0.15s, background 0.15s;
  cursor: pointer;
}

.view-toggle.active {
  color: var(--color-navy);
  font-weight: 600;
}

.view-toggle-icon {
  font-size: 18px;
}

/* FAB - 中央加单按钮 */
.fab {
  position: absolute;
  left: 50%;
  top: -28px;
  transform: translateX(-50%);
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--color-cta-red);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  font-weight: 300;
  box-shadow: var(--shadow-fab);
  transition: transform 0.15s, box-shadow 0.15s;
  cursor: pointer;
}

.fab:hover {
  transform: translateX(-50%) scale(1.05);
  box-shadow: 0 6px 18px rgba(230, 69, 51, 0.45);
}

.fab:active {
  transform: translateX(-50%) scale(0.97);
}

/* ============================
   弹窗 - 添加订单
   ============================ */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(31, 42, 60, 0.5);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, visibility 0.2s;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--color-card);
  border-radius: var(--radius-xl);
  width: 560px;
  max-width: calc(100vw - 32px);
  max-height: calc(100dvh - 32px);
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 60px rgba(31, 42, 60, 0.3);
  transform: translateY(20px);
  transition: transform 0.25s;
}

.modal-overlay.active .modal {
  transform: translateY(0);
}

.modal-header {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-divider);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-text-primary);
}

.modal-close {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  font-size: 20px;
  transition: background 0.15s;
  cursor: pointer;
  flex-shrink: 0;
}

.modal-close:hover {
  background: var(--color-divider);
  color: var(--color-text-primary);
}

/* 确认对话框 */
.confirm-dialog {
  width: 360px;
  max-width: calc(100vw - 32px);
  text-align: center;
}

.modal-body {
  padding: var(--space-5);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  flex: 0 1 auto;
}

.field {
  margin-bottom: var(--space-4);
}

.field-label {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
  font-weight: 500;
}

.field-input {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  font-size: var(--text-base);
  background: var(--color-card);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.field-input:focus {
  border-color: var(--color-navy);
  box-shadow: 0 0 0 3px var(--color-navy-bg);
}

.field-input::placeholder {
  color: var(--color-text-placeholder);
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.field-row-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-3);
}

.field-row-quantity {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.quantity-stepper {
  display: flex;
  align-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.qty-btn {
  width: 38px;
  height: 38px;
  background: var(--color-navy-bg);
  color: var(--color-navy);
  font-size: 18px;
  font-weight: 500;
  transition: background 0.15s;
}

.qty-btn:hover {
  background: var(--color-navy);
  color: white;
}

.qty-value {
  width: 56px;
  text-align: center;
  font-size: var(--text-md);
  font-weight: 600;
  font-family: var(--font-num);
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  cursor: pointer;
  user-select: none;
}

.checkbox {
  width: 20px;
  height: 20px;
  border: 1.5px solid var(--color-border);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
  flex-shrink: 0;
}

.checkbox.checked {
  background: var(--color-navy);
  border-color: var(--color-navy);
}

.checkbox.checked::after {
  content: '✓';
  color: white;
  font-size: 13px;
  font-weight: bold;
}

.checkbox-label {
  font-size: var(--text-base);
  color: var(--color-text-primary);
}

.details-toggle {
  text-align: center;
  padding: var(--space-3);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: color 0.15s;
  user-select: none;
  border-top: 1px solid var(--color-divider);
  margin-top: var(--space-3);
}

.details-toggle:hover {
  color: var(--color-navy);
}

.details-toggle .arrow {
  display: inline-block;
  transition: transform 0.2s;
  margin-left: 4px;
}

.details-toggle.expanded .arrow {
  transform: rotate(180deg);
}

.details-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
}

.details-panel.show {
  max-height: 280px;
}

.autocomplete-panel {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 10;
  max-height: 200px;
  overflow-y: auto;
  display: none;
}

.autocomplete-panel.show {
  display: block;
}

.autocomplete-item {
  padding: 10px 14px;
  cursor: pointer;
  transition: background 0.15s;
  font-size: var(--text-base);
  border-bottom: 1px solid var(--color-divider);
}

.autocomplete-item:last-child {
  border-bottom: none;
}

.autocomplete-item:hover {
  background: var(--color-navy-bg);
}

.autocomplete-item .ac-sub {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  margin-top: 2px;
}

.modal-footer {
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--color-divider);
  display: flex;
  gap: var(--space-3);
  background: var(--color-bg);
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
}

.modal-footer .btn {
  flex: 1;
  justify-content: center;
  padding: 12px 16px;
  font-size: var(--text-base);
}

.modal-footer .btn-orange { background: var(--color-cta-orange); }

/* ============================
   Toast 提示
   ============================ */

.toast {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  background: rgba(31, 42, 60, 0.92);
  color: white;
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  font-size: var(--text-sm);
  z-index: 2000;
  opacity: 0;
  transition: all 0.25s;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(8px);
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast.success { background: rgba(46, 139, 87, 0.95); }
.toast.warning { background: rgba(232, 168, 50, 0.95); }
.toast.error { background: rgba(230, 69, 51, 0.95); }

/* ============================
   筛选下拉
   ============================ */

.dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 220px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--space-3);
  z-index: 100;
  display: none;
}

.dropdown-menu.show {
  display: block;
}

.dropdown-section {
  margin-bottom: var(--space-3);
}

.dropdown-section:last-child {
  margin-bottom: 0;
}

.dropdown-title {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--space-2);
}

.dropdown-option {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: var(--text-sm);
  transition: background 0.15s;
}

.dropdown-option:hover {
  background: var(--color-bg);
}

.dropdown-option.active {
  color: var(--color-navy);
  font-weight: 500;
  background: var(--color-navy-bg);
}

/* ============================
   子页面（账单系统子页）
   ============================ */

.subpage-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-5);
}

.subpage-title {
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.data-table {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.table-header,
.table-row {
  display: grid;
  grid-template-columns: 60px 2fr 1fr 1fr 1fr 100px;
  padding: var(--space-3) var(--space-5);
  align-items: center;
  gap: var(--space-3);
}

.table-header {
  background: var(--color-bg);
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.table-row {
  border-top: 1px solid var(--color-divider);
  font-size: var(--text-base);
  transition: background 0.15s;
}

.table-row:hover {
  background: var(--color-bg);
}

.table-row .row-name {
  font-weight: 500;
  color: var(--color-text-primary);
}

.table-row .row-meta {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  margin-top: 2px;
}

.table-actions {
  display: flex;
  gap: var(--space-2);
}

.table-actions button {
  width: 30px;
  height: 30px;
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
}

.table-actions button:hover {
  background: var(--color-navy-bg);
  color: var(--color-navy);
}

/* 工具卡片 */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.tool-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  cursor: pointer;
  transition: all 0.15s;
}

.tool-card:hover {
  border-color: var(--color-navy);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.tool-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-navy-bg), #D5E2F1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: var(--space-3);
}

.tool-name {
  font-size: var(--text-md);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 4px;
}

.tool-desc {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}

/* ============================
   响应式
   ============================ */

@media (max-width: 1024px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .tools-grid { grid-template-columns: repeat(2, 1fr); }
  .table-header, .table-row { grid-template-columns: 60px 1.5fr 1fr 1fr 80px; }
  .table-header .col-cost, .table-row .col-cost { display: none; }
}

@media (max-width: 768px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .tools-grid { grid-template-columns: 1fr; }
  .field-row, .field-row-3 { grid-template-columns: 1fr; }
}

/* ============================
   实用类
   ============================ */

.flex { display: flex; }
.flex-1 { flex: 1; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.text-sm { font-size: var(--text-sm); }
.text-tertiary { color: var(--color-text-tertiary); }
.mb-3 { margin-bottom: 12px; }
.mb-4 { margin-bottom: 16px; }
.mt-3 { margin-top: 12px; }
.hidden { display: none !important; }

/* ============================
   移动端底部导航栏
   ============================ */

.mobile-nav {
  display: none;
}

.more-sheet-overlay {
  display: none;
}

@media (max-width: 768px) {
  /* ===== 底部导航栏 ===== */
  .mobile-nav {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-card);
    border-top: 1px solid var(--color-border);
    padding: 6px 0 calc(6px + env(safe-area-inset-bottom));
    z-index: 200;
    justify-content: space-around;
    align-items: flex-end;
    box-shadow: 0 -2px 12px rgba(31, 42, 60, 0.08);
  }

  .mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 4px 10px;
    color: var(--color-text-tertiary);
    cursor: pointer;
    transition: color 0.15s;
    min-height: 44px;
    justify-content: center;
    flex: 1;
  }

  .mobile-nav-item.active {
    color: var(--color-cta-red);
  }

  .mobile-nav-icon {
    font-size: 22px;
    line-height: 1;
  }

  .mobile-nav-label {
    font-size: 10px;
    font-weight: 500;
  }

  /* 中央 FAB */
  .mobile-nav-fab {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: var(--color-cta-red);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 300;
    box-shadow: var(--shadow-fab);
    cursor: pointer;
    margin-top: -20px;
    flex-shrink: 0;
    transition: transform 0.15s;
  }

  .mobile-nav-fab:active {
    transform: scale(0.92);
  }

  /* ===== 更多菜单（底部弹出） ===== */
  .more-sheet-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(31, 42, 60, 0.5);
    backdrop-filter: blur(4px);
    z-index: 300;
    opacity: 0;
    transition: opacity 0.2s;
  }

  .more-sheet-overlay.active {
    display: block;
    opacity: 1;
  }

  .more-sheet {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-card);
    border-radius: 18px 18px 0 0;
    padding: 8px 16px calc(20px + env(safe-area-inset-bottom));
    transform: translateY(100%);
    transition: transform 0.3s ease;
  }

  .more-sheet-overlay.active .more-sheet {
    transform: translateY(0);
  }

  .more-sheet-handle {
    width: 36px;
    height: 4px;
    border-radius: 2px;
    background: var(--color-text-placeholder);
    margin: 0 auto 16px;
  }

  .more-sheet-title {
    font-size: 13px;
    color: var(--color-text-tertiary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
    padding-left: 4px;
  }

  .more-sheet-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
  }

  .more-sheet-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px 8px;
    border-radius: 14px;
    background: var(--color-bg);
    cursor: pointer;
    transition: background 0.15s;
    min-height: 44px;
  }

  .more-sheet-item:active {
    background: var(--color-navy-bg);
  }

  .more-sheet-item-icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--color-card);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    box-shadow: var(--shadow-sm);
  }

  .more-sheet-item-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--color-text-primary);
  }

  /* ===== App 布局修复 ===== */
  .app {
    height: 100vh;
    height: 100dvh;
    grid-template-columns: 1fr;
    padding-bottom: 0;
  }

  body {
    overflow: hidden;
    -webkit-text-size-adjust: 100%;
  }

  /* ===== 顶栏适配 ===== */
  .topbar {
    padding: calc(env(safe-area-inset-top) + 8px) 12px 8px;
    height: auto;
    flex-wrap: wrap;
    gap: 8px;
  }

  .page-title-wrap {
    min-width: 0;
    flex: 0 0 auto;
  }

  .page-title-icon {
    width: 32px;
    height: 32px;
    font-size: 16px;
  }

  .page-title {
    font-size: 15px;
  }

  .page-subtitle {
    display: none;
  }

  .tabs {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin-left: 0;
    width: 100%;
    order: 3;
    gap: 4px;
    padding-bottom: 2px;
  }

  .tab {
    padding: 6px 10px;
    font-size: 13px;
    white-space: nowrap;
    flex-shrink: 0;
  }

  .topbar-actions {
    margin-left: auto;
    gap: 4px;
  }

  .icon-btn {
    width: 40px;
    height: 40px;
    font-size: 18px;
  }

  .user-avatar {
    width: 32px;
    height: 32px;
    font-size: 13px;
  }

  /* ===== 内容区域 ===== */
  .content {
    padding: 12px;
    padding-bottom: calc(80px + env(safe-area-inset-bottom));
    -webkit-overflow-scrolling: touch;
  }

  /* ===== 底部操作栏（页面内的） ===== */
  .bottom-bar {
    position: fixed;
    bottom: calc(56px + env(safe-area-inset-bottom));
    left: 0;
    right: 0;
    margin: 0;
    border-radius: 0;
    padding: 8px 12px;
  }

  .bottom-bar .fab {
    display: none;
  }

  .view-toggle {
    padding: 6px 12px;
    font-size: 13px;
  }

  .view-toggle-icon {
    font-size: 16px;
  }

  /* ===== 统计卡片 ===== */
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin-bottom: 12px;
  }

  .stat-card {
    padding: 14px;
  }

  .stat-label {
    font-size: 11px;
  }

  .stat-value {
    font-size: 22px;
  }

  .stat-trend {
    font-size: 10px;
  }

  /* ===== 工具栏 ===== */
  .toolbar {
    padding: 8px 12px;
    gap: 8px;
    flex-wrap: wrap;
  }

  .search-input {
    height: 36px;
    padding: 0 12px;
  }

  .search-input input {
    font-size: 16px;
  }

  /* ===== 输入框修复 iOS 缩放 ===== */
  .field-input {
    font-size: 16px;
    padding: 10px 12px;
  }

  input, select, textarea {
    font-size: 16px;
  }

  /* 表格操作按钮增大触摸区 */
  .table-actions button {
    width: 40px;
    height: 40px;
    font-size: 16px;
  }

  .table-actions {
    gap: 6px;
  }

  /* ===== 列表/卡片 ===== */
  .list-section {
    border-radius: 12px;
  }

  .list-header {
    padding: 12px 16px;
    flex-wrap: wrap;
    gap: 4px;
  }

  .list-title {
    font-size: 15px;
  }

  .category-header {
    padding: 10px 16px;
  }

  .product-row {
    padding: 10px 16px;
    gap: 8px;
    flex-wrap: wrap;
  }

  .product-icon {
    width: 36px;
    height: 36px;
    font-size: 16px;
  }

  .product-name {
    font-size: 14px;
  }

  .product-sub {
    font-size: 11px;
  }

  .product-qty {
    font-size: 12px;
    padding: 3px 8px;
  }

  .btn-icon-text {
    padding: 6px 10px;
    font-size: 12px;
  }

  .order-item-row {
    padding-left: 48px !important;
    padding-top: 8px;
    padding-bottom: 8px;
  }

  .order-item-avatar {
    width: 28px;
    height: 28px;
    font-size: 12px;
  }

  .order-item-actions .btn-icon-text {
    padding: 6px 10px;
    font-size: 14px;
    min-width: 36px;
    min-height: 32px;
  }

  .product-action {
    gap: 4px;
    flex-wrap: wrap;
    justify-content: flex-end;
  }

  .buyer-group {
    padding: 10px 16px;
    gap: 10px;
  }

  .buyer-avatar {
    width: 38px;
    height: 38px;
    font-size: 14px;
  }

  /* ===== 订单卡片 ===== */
  .order-card {
    padding: 12px 16px;
    margin-bottom: 8px;
    border-radius: 12px;
  }

  .order-actions {
    gap: 6px;
  }

  .btn {
    padding: 7px 12px;
    font-size: 13px;
  }

  /* ===== 表格滚动 ===== */
  .data-table {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .table-header, .table-row {
    min-width: 500px;
    padding: 10px 16px;
    gap: 8px;
  }

  .table-header .col-cost, .table-row .col-cost {
    display: none;
  }

  /* ===== 工具箱 ===== */
  .tools-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .tool-card {
    padding: 16px;
  }

  /* ===== 弹窗适配 ===== */
  .modal {
    width: 100%;
    max-width: calc(100vw - 24px);
    max-height: calc(100dvh - 24px);
    border-radius: 14px;
  }

  .modal-body {
    padding: 16px;
    -webkit-overflow-scrolling: touch;
  }

  .modal-header {
    padding: 12px 16px;
  }

  .modal-title {
    font-size: 17px;
  }

  .modal-close {
    width: 40px;
    height: 40px;
    font-size: 22px;
  }

  .modal-footer {
    padding: 12px 16px;
    gap: 8px;
    flex-wrap: wrap;
  }

  .modal-footer .btn {
    flex: 1;
    min-width: 100px;
    padding: 12px 14px;
    font-size: 15px;
    min-height: 44px;
  }

  .field-row {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  /* ===== 个人中心 ===== */
  .stat-card[style*="grid-column: span 2"] {
    grid-column: span 2 !important;
    padding: 20px 16px;
  }

  .list-section[style*="grid-column: span 2"] {
    grid-column: span 2 !important;
  }

  /* ===== Toast ===== */
  .toast {
    top: calc(env(safe-area-inset-top) + 12px);
    font-size: 13px;
    padding: 8px 16px;
    max-width: calc(100vw - 32px);
  }

  /* ===== 筛选下拉 ===== */
  .dropdown-menu {
    right: -12px;
    min-width: 180px;
  }
}

/* ============================
   小屏幕手机优化
   ============================ */
@media (max-width: 375px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .tools-grid {
    grid-template-columns: 1fr;
  }

  .field-row {
    grid-template-columns: 1fr;
  }

  .modal-footer {
    flex-direction: column;
  }

  .modal-footer .btn {
    width: 100%;
  }
}