/**
 * 苹果设计风格 CSS
 * 特点：简洁、圆角、毛玻璃效果、柔和渐变、大量留白
 */

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

:root {
  --primary-color: #007aff;
  --primary-light: #5ac8fa;
  --primary-dark: #0055d4;
  --success-color: #34c759;
  --warning-color: #ff9500;
  --error-color: #ff3b30;
  --text-primary: #1d1d1f;
  --text-secondary: #86868b;
  --text-tertiary: #c7c7c7;
  --bg-primary: #ffffff;
  --bg-secondary: #f5f5f7;
  --bg-tertiary: #e8e8ed;
  --border-color: #e5e5ea;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.16);
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.18);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  min-height: 100vh;
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

#app {
  min-height: 100vh;
}

/* ========== 登录页面 ========== */
.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: transparent;
}

.login-box {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  box-shadow: var(--shadow-lg);
  padding: 48px;
  width: 100%;
  max-width: 420px;
  animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.login-header {
  text-align: center;
  margin-bottom: 32px;
}

.login-header h1 {
  font-size: 28px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}

.login-header p {
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 400;
}

.login-form .form-group {
  margin-bottom: 20px;
}

.login-form label {
  display: block;
  margin-bottom: 8px;
  color: var(--text-primary);
  font-weight: 500;
  font-size: 14px;
}

.login-form input {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  font-size: 15px;
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  font-weight: 400;
}

.login-form input::placeholder {
  color: var(--text-tertiary);
}

.login-form input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.15);
  background: var(--bg-primary);
}

.login-btn {
  width: 100%;
  padding: 12px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  letter-spacing: 0;
}

.login-btn:hover {
  background: var(--primary-dark);
}

.login-btn:active {
  transform: scale(0.97);
}

.login-btn:disabled {
  background: var(--bg-tertiary);
  color: var(--text-tertiary);
  cursor: not-allowed;
  transform: none;
}

.login-error {
  background: rgba(255, 59, 48, 0.1);
  border: 1px solid rgba(255, 59, 48, 0.2);
  color: var(--error-color);
  padding: 14px 16px;
  border-radius: 12px;
  margin-bottom: 20px;
  font-size: 14px;
  backdrop-filter: blur(10px);
}

/* ========== 主页面 ========== */
.main-container {
  min-height: 100vh;
  padding-bottom: 40px;
}

/* 顶部导航 */
.header {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  padding: 0 32px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header h1 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.3px;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 16px;
  background: var(--bg-secondary);
  border-radius: 20px;
}

.balance-display {
  background: linear-gradient(135deg, var(--success-color) 0%, #30d158 100%);
  padding: 6px 16px;
  border-radius: 8px;
  font-weight: 600;
  color: white;
  font-size: 15px;
  box-shadow: 0 2px 8px rgba(52, 199, 89, 0.3);
}

.balance-low {
  background: linear-gradient(135deg, var(--warning-color) 0%, #ff6b00 100%);
  box-shadow: 0 2px 8px rgba(255, 149, 0, 0.3);
}

.balance-negative {
  background: linear-gradient(135deg, var(--error-color) 0%, #d63027 100%);
  box-shadow: 0 2px 8px rgba(255, 59, 48, 0.3);
}

.logout-btn {
  padding: 10px 20px;
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.logout-btn:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border-color: var(--text-tertiary);
}

/* 主内容区 */
.main-content {
  padding: 32px;
  max-width: 1400px;
  margin: 0 auto;
}

/* 卡片 */
.card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 28px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-md);
  animation: fadeInUp 0.5s ease-out;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.card-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.3px;
}

/* 表单 */
.query-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  align-items: end;
}

.form-group {
  display: flex;
  flex-direction: column;
}

label {
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text-primary);
  font-size: 14px;
}

select, input {
  padding: 12px 14px;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  font-size: 15px;
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  font-weight: 400;
}

select::placeholder, input::placeholder {
  color: var(--text-tertiary);
}

select:focus, input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.15);
  background: var(--bg-primary);
}

select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2386868b' d='M6 9L2 5l4 4 4-4-4zm0 0l-4 4 4 4-4z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

/* 按钮 */
.btn {
  padding: 10px 20px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.15s ease;
  letter-spacing: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

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

.btn:active {
  transform: scale(0.97);
}

.btn:disabled {
  background: var(--bg-tertiary);
  color: var(--text-tertiary);
  cursor: not-allowed;
  transform: none;
}

.btn-small {
  padding: 8px 16px;
  font-size: 13px;
}

/* 筛选栏 */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
  padding: 16px;
  background: var(--bg-secondary);
  border-radius: 16px;
}

.filter-bar .filter-item {
  display: flex;
  align-items: center;
  gap: 10px;
}

.filter-bar label {
  margin-bottom: 0;
  white-space: nowrap;
  font-weight: 500;
}

.filter-bar select {
  min-width: 160px;
}

/* 汇总卡片 */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.summary-item {
  background: var(--bg-primary);
  padding: 20px;
  border-radius: 16px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

.summary-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.summary-item--success {
  background: linear-gradient(135deg, var(--success-color) 0%, #30d158 100%);
  color: white;
}

.summary-item--gray {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.summary-item .label {
  font-size: 13px;
  opacity: 0.85;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--text-secondary);
}

.summary-item .value {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.summary-item .unit {
  font-size: 13px;
  opacity: 0.7;
  margin-left: 4px;
  font-weight: 400;
}

.summary-item .sub-label {
  font-size: 12px;
  opacity: 0.8;
  margin-top: 6px;
  font-weight: 500;
}

/* 图表容器 */
.chart-container {
  margin: 20px 0;
  position: relative;
  height: 300px;
  background: var(--bg-primary);
  border-radius: 16px;
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

/* 表格 */
table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
  font-size: 14px;
}

th {
  background: var(--bg-secondary);
  font-weight: 600;
  color: var(--text-primary);
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  font-size: 13px;
  letter-spacing: 0.3px;
}

th.sortable {
  cursor: pointer;
  user-select: none;
  transition: background 0.2s;
}

th.sortable:hover {
  background: var(--bg-tertiary);
}

th .sort-icon {
  margin-left: 6px;
  opacity: 0.4;
}

th.sorted .sort-icon {
  opacity: 1;
}

tr:hover {
  background: var(--bg-secondary);
}

.table-container {
  max-height: 500px;
  overflow-y: auto;
  margin-top: 16px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  background: var(--bg-primary);
  box-shadow: var(--shadow-sm);
}

/* 分页 */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  margin-top: 24px;
}

.pagination button {
  padding: 8px 16px;
  border: 1px solid var(--border-color);
  background: var(--bg-primary);
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  color: var(--text-primary);
}

.pagination button:hover:not(:disabled) {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
  transform: translateY(-2px);
}

.pagination button.active {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
  color: white;
  border-color: var(--primary-color);
  box-shadow: var(--shadow-sm);
}

.pagination button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.pagination-info {
  color: var(--text-secondary);
  font-size: 14px;
  margin-left: 16px;
  font-weight: 500;
}

/* 加载状态 */
.loading {
  text-align: center;
  padding: 60px;
  color: var(--text-secondary);
  font-size: 15px;
}

.loading::after {
  content: '';
  display: block;
  width: 40px;
  height: 40px;
  margin: 20px auto;
  border: 3px solid var(--primary-color);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* 错误提示 */
.error {
  background: rgba(255, 59, 48, 0.08);
  border: 1px solid rgba(255, 59, 48, 0.15);
  color: var(--error-color);
  padding: 16px 20px;
  border-radius: 12px;
  margin-bottom: 20px;
  font-size: 14px;
  backdrop-filter: blur(10px);
}

/* 无数据提示 */
.no-data {
  text-align: center;
  padding: 60px;
  color: var(--text-secondary);
  font-size: 15px;
}

.no-data::before {
  content: '📊';
  display: block;
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.5;
}

/* 标签 */
.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 600;
  background: linear-gradient(135deg, #e6f7ff 0%, #b4d8ff 100%);
  color: var(--primary-color);
  box-shadow: 0 2px 6px rgba(0, 122, 255, 0.2);
}

/* 费用高亮 */
.cost {
  color: var(--error-color);
  font-weight: 600;
}

/* 标签页 */
.tabs {
  display: flex;
  gap: 0;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
  padding: 0 8px;
}

.tab {
  padding: 12px 24px;
  cursor: pointer;
  border: none;
  background: none;
  font-size: 15px;
  color: var(--text-secondary);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  font-weight: 500;
  position: relative;
}

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

.tab.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
  font-weight: 600;
}

.tab.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-color) 0%, var(--primary-light) 100%);
  border-radius: 1px;
}

/* 模型统计卡片 */
.model-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.model-stat-card {
  background: var(--bg-primary);
  padding: 18px;
  border-radius: 16px;
  border-left: 4px solid var(--primary-color);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

.model-stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.model-stat-card h4 {
  margin-bottom: 12px;
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.3px;
}

.model-stat-card .stat-row {
  display: flex;
  justify-content: space-between;
  margin: 8px 0;
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
}

.discount-badge {
  display: inline-block;
  padding: 4px 10px;
  background: linear-gradient(135deg, var(--success-color) 0%, #30d158 100%);
  color: white;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  box-shadow: 0 2px 6px rgba(52, 199, 89, 0.3);
}

.original-price {
  text-decoration: line-through;
  color: var(--text-tertiary);
  font-size: 13px;
  opacity: 0.7;
}

/* 充值记录 */
.recharge-amount-positive {
  color: var(--success-color);
  font-weight: 600;
}

.recharge-amount-negative {
  color: var(--error-color);
  font-weight: 600;
}

/* 详细记录汇总卡片 */
.records-summary-card {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 20px;
  padding: 24px 28px;
  margin: 20px 0;
  color: white;
  box-shadow: var(--shadow-lg);
  animation: fadeInUp 0.6s ease-out;
}

.records-summary-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.records-summary-title {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.5px;
}

.records-summary-subtitle {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
  font-weight: 500;
}

.records-summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
}

.records-summary-item {
  text-align: center;
  padding: 16px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  backdrop-filter: blur(8px);
  transition: all 0.3s ease;
}

.records-summary-item:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.18);
}

.records-summary-label {
  display: block;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}

.records-summary-value {
  display: block;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.5px;
}

.records-summary-value.original {
  color: rgba(255, 255, 255, 0.6);
  text-decoration: line-through;
  opacity: 0.8;
}

.records-summary-value.actual {
  color: #d4edda;
}

.records-summary-value.saved {
  color: #fff3cd;
}

/* 响应式 */
@media (max-width: 768px) {
  .header h1 {
    font-size: 16px;
  }

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

  .query-form {
    grid-template-columns: 1fr;
  }

  .main-content {
    padding: 20px;
  }

  .filter-bar {
    flex-direction: column;
  }

  .records-summary-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .login-box {
    padding: 32px;
    margin: 20px;
  }
}

/* 滚动条美化 */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: var(--text-tertiary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* 输入框日期图标 */
input[type="date"]::-webkit-calendar-picker-indicator {
  filter: invert(0.5);
  cursor: pointer;
}

/* 选择框选项 */
select option {
  background: var(--bg-primary);
  color: var(--text-primary);
  padding: 12px;
}