/* ───────── 全局重置 ───────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --primary: #4A90D9;
  --primary-dark: #357ABD;
  --primary-light: #e8f0fe;
  --success: #52c41a;
  --warning: #faad14;
  --error: #ff4d4f;
  --bg: #f0f2f5;
  --card: #ffffff;
  --text: #1a1a1a;
  --text-secondary: #666;
  --border: #e0e0e0;
  --shadow: 0 2px 8px rgba(0,0,0,.08);
  --radius: 10px;
  --radius-sm: 6px;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  padding-bottom: env(safe-area-inset-bottom);
}

/* ───────── 头部 ───────── */
.app-header {
  background: var(--primary);
  color: #fff;
  padding: 16px 16px 14px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(74,144,217,.3);
}

.app-header h1 {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: .5px;
}

.app-header .subtitle {
  font-size: .8rem;
  opacity: .85;
  margin-top: 2px;
}

/* ───────── 主容器 ───────── */
.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 12px;
}

/* ───────── 卡片 ───────── */
.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  margin-bottom: 12px;
}

.card-title {
  font-size: .95rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 6px;
}

.card-title .badge {
  font-size: .7rem;
  font-weight: 400;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 10px;
  padding: 1px 8px;
  margin-left: 4px;
}

/* ───────── 店铺选择 ───────── */
.shop-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.shop-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border: 1.5px solid var(--border);
  border-radius: 20px;
  font-size: .85rem;
  cursor: pointer;
  user-select: none;
  transition: all .2s;
  background: #fff;
  color: var(--text);
  -webkit-tap-highlight-color: transparent;
}

.shop-chip:active {
  transform: scale(.96);
}

/* 店铺类型徽标 */
.badge-ozon, .badge-wb {
  display: inline-block;
  font-size: .6rem;
  font-weight: 700;
  padding: 1px 5px;
  border-radius: 4px;
  line-height: 1.3;
  letter-spacing: .3px;
}
.badge-ozon {
  background: #4A90D9;
  color: #fff;
}
.badge-wb {
  background: #9b59b6;
  color: #fff;
}

.shop-chip.selected {
  border-color: var(--primary);
  background: var(--primary-light);
  color: var(--primary-dark);
  font-weight: 500;
}

.shop-chip.select-all {
  border-color: var(--primary);
  background: var(--primary);
  color: #fff;
  font-weight: 500;
}

.shop-chip.select-all:not(.selected) {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}

.shop-chip .check {
  display: inline-block;
  width: 16px; height: 16px;
  border-radius: 50%;
  border: 2px solid var(--border);
  flex-shrink: 0;
  transition: all .2s;
}

.shop-chip.selected .check {
  background: var(--primary);
  border-color: var(--primary);
}

/* ───────── 单选 / 选项组 ───────── */
.option-group {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.option-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 8px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: .85rem;
  cursor: pointer;
  user-select: none;
  transition: all .2s;
  background: #fff;
  -webkit-tap-highlight-color: transparent;
}

.option-btn:active {
  transform: scale(.97);
}

.option-btn .radio-dot {
  display: inline-block;
  width: 14px; height: 14px;
  border-radius: 50%;
  border: 2px solid var(--border);
  flex-shrink: 0;
  transition: all .2s;
}

.option-btn.active {
  border-color: var(--primary);
  background: var(--primary-light);
}

.option-btn.active .radio-dot {
  border-color: var(--primary);
  background: var(--primary);
  box-shadow: inset 0 0 0 3px #fff;
}

.option-btn .desc {
  display: block;
  font-size: .7rem;
  color: var(--text-secondary);
  margin-top: 1px;
  font-weight: 400;
}

/* ───────── 自定义日期 ───────── */
.date-inputs {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.date-inputs label {
  font-size: .82rem;
  color: var(--text-secondary);
}

.date-inputs input[type="date"] {
  padding: 6px 10px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: .85rem;
  font-family: inherit;
  background: #fff;
  color: var(--text);
  flex: 1;
  min-width: 120px;
  -webkit-appearance: none;
  appearance: none;
}

.date-inputs input[type="date"]:focus {
  outline: none;
  border-color: var(--primary);
}

/* ───────── 按钮 ───────── */
.btn-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s;
  -webkit-tap-highlight-color: transparent;
  font-family: inherit;
  min-height: 48px;
}

.btn:active {
  transform: scale(.97);
}

.btn:disabled {
  opacity: .5;
  cursor: not-allowed;
  transform: none;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  flex: 1;
}

.btn-primary:hover:not(:disabled) {
  background: var(--primary-dark);
}

.btn-secondary {
  background: #fff;
  color: var(--text);
  border: 1.5px solid var(--border);
}

.btn-success {
  background: var(--success);
  color: #fff;
}

.btn-danger {
  background: var(--error);
  color: #fff;
}

.btn-sm {
  padding: 8px 16px;
  font-size: .82rem;
  min-height: 36px;
}

/* ───────── 加载动画 ───────── */
.loading {
  display: none;
  flex-direction: column;
  align-items: center;
  padding: 32px 0;
  gap: 12px;
}

.loading.active {
  display: flex;
}

.spinner {
  width: 36px; height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-text {
  font-size: .85rem;
  color: var(--text-secondary);
}

/* ───────── 错误提示 ───────── */
.error-box {
  background: #fff2f0;
  border: 1px solid #ffccc7;
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--error);
  font-size: .85rem;
  margin-bottom: 12px;
  display: none;
}

.error-box.active {
  display: block;
}

/* ───────── 结果区域 ───────── */
.result-section {
  display: none;
}

.result-section.active {
  display: block;
}

.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
  flex-wrap: wrap;
  gap: 6px;
}

.result-header h3 {
  font-size: 1rem;
  font-weight: 600;
}

.shop-result {
  margin-bottom: 16px;
}

.shop-result-title {
  font-size: .88rem;
  font-weight: 600;
  padding: 8px 0;
  color: var(--primary-dark);
  border-bottom: 2px solid var(--primary-light);
  margin-bottom: 10px;
}

.shop-result-title .shop-error {
  color: var(--error);
}

.agg-section {
  background: #f6ffed;
  border: 1px solid #b7eb8f;
  border-radius: var(--radius-sm);
  padding: 14px;
  margin-bottom: 16px;
}

.agg-title {
  font-size: .9rem;
  font-weight: 600;
  color: #389e0d;
  margin-bottom: 8px;
}

/* ───────── 数据展示 ───────── */
.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.stat-card {
  background: #fafafa;
  border-radius: var(--radius-sm);
  padding: 14px;
  text-align: center;
}

.stat-card .value {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary);
}

.stat-card .label {
  font-size: .78rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

.stat-card.accent-green .value { color: var(--success); }
.stat-card.accent-orange .value { color: var(--warning); }
.stat-card.accent-red .value { color: var(--error); }

.data-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .82rem;
  min-width: 340px;
}

.data-table th {
  background: var(--primary-light);
  color: var(--primary-dark);
  font-weight: 600;
  padding: 8px 10px;
  text-align: left;
  white-space: nowrap;
  position: sticky;
  top: 0;
}

.data-table td {
  padding: 7px 10px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.data-table tr:hover td {
  background: #fafafa;
}

.finance-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.finance-item {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  font-size: .85rem;
  border-bottom: 1px dashed var(--border);
}

.finance-item.full {
  grid-column: 1 / -1;
}

.finance-item .fin-label {
  color: var(--text-secondary);
}

.finance-item .fin-value {
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.finance-item .fin-value.positive { color: var(--success); }
.finance-item .fin-value.negative { color: var(--error); }
.finance-item .fin-value.neutral { color: var(--primary); }

.trend-item {
  display: flex;
  justify-content: space-between;
  padding: 6px 10px;
  font-size: .82rem;
  border-bottom: 1px solid var(--border);
}

.trend-item .trend-date {
  color: var(--text-secondary);
  min-width: 90px;
}

.trend-item .trend-rev {
  font-weight: 600;
  min-width: 100px;
  text-align: right;
}

.trend-item .trend-units {
  min-width: 50px;
  text-align: right;
  color: var(--text-secondary);
}

/* ───────── 库存状态徽标 ───────── */
.status-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 10px;
  font-size: .75rem;
  font-weight: 600;
  white-space: nowrap;
}
.status-normal {
  background: #f6ffed;
  color: #52c41a;
  border: 1px solid #b7eb8f;
}
.status-warning {
  background: #fffbe6;
  color: #faad14;
  border: 1px solid #ffe58f;
}
.status-danger {
  background: #fff2f0;
  color: #ff4d4f;
  border: 1px solid #ffccc7;
}

/* 桌面版库存状态徽标 */
.ds-status {
  display: inline-block;
  padding: 2px 12px;
  border-radius: 10px;
  font-size: .78rem;
  font-weight: 600;
}
.ds-status.normal {
  background: #f6ffed; color: #52c41a; border: 1px solid #b7eb8f;
}
.ds-status.warning {
  background: #fffbe6; color: #d48806; border: 1px solid #ffe58f;
}
.ds-status.danger {
  background: #fff2f0; color: #ff4d4f; border: 1px solid #ffccc7;
}

/* ───────── 店铺管理弹窗 ───────── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 1000;
  justify-content: center;
  align-items: center;
  padding: 16px;
}

.modal-overlay.active {
  display: flex;
}

.modal {
  background: #fff;
  border-radius: var(--radius);
  width: 100%;
  max-width: 480px;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: 0 8px 30px rgba(0,0,0,.2);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.modal-header h2 {
  font-size: 1.05rem;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-secondary);
  padding: 4px;
  line-height: 1;
}

.modal-body {
  padding: 16px 20px;
}

.modal-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* ───────── 表单 ───────── */
.form-group {
  margin-bottom: 14px;
}

.form-group label {
  display: block;
  font-size: .85rem;
  font-weight: 500;
  margin-bottom: 4px;
  color: var(--text);
}

.form-input {
  width: 100%;
  padding: 10px 12px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: .88rem;
  font-family: inherit;
  transition: border-color .2s;
  background: #fff;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
}

.shop-mgr-list .mgr-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: .85rem;
  gap: 8px;
}

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

.mgr-item .mgr-name {
  font-weight: 500;
}

.mgr-item .mgr-cid {
  font-size: .75rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ───────── Toast 通知 ───────── */
.toast {
  position: fixed;
  top: 70px;
  left: 50%;
  transform: translateX(-50%);
  background: #333;
  color: #fff;
  padding: 10px 24px;
  border-radius: 20px;
  font-size: .85rem;
  z-index: 2000;
  opacity: 0;
  transition: opacity .3s;
  pointer-events: none;
  white-space: nowrap;
}

.toast.active {
  opacity: 1;
}

.toast.success { background: var(--success); }
.toast.error { background: var(--error); }

/* ───────── 空状态 ───────── */
.empty-state {
  text-align: center;
  padding: 32px 16px;
  color: var(--text-secondary);
  font-size: .88rem;
}

/* ───────── 响应式 ───────── */
@media (max-width: 480px) {
  .container { padding: 8px; }
  .card { padding: 12px; }
  .stat-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
  .stat-card { padding: 10px; }
  .stat-card .value { font-size: 1.1rem; }
  .finance-grid { grid-template-columns: 1fr; }
  .option-group { gap: 4px; }
  .option-btn { padding: 6px 10px; font-size: .8rem; }
  .btn { padding: 10px 16px; font-size: .9rem; min-height: 44px; }
  .shop-chip { padding: 6px 12px; font-size: .8rem; }
}

@media (min-width: 768px) {
  .stat-grid { grid-template-columns: repeat(4, 1fr); }
  .finance-grid { grid-template-columns: 1fr 1fr; }
  .two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
}