/* 全局样式 */
:root {
  --primary-color: #4f46e5;
  --primary-hover: #4338ca;
  --secondary-color: #6b7280;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --danger-color: #ef4444;
  --info-color: #3b82f6;
  --bg-color: #f3f4f6;
  --card-bg: #ffffff;
  --text-primary: #111827;
  --text-secondary: #6b7280;
  --border-color: #e5e7eb;
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
}

/* 布局 */
.app-container {
  display: flex;
  min-height: 100vh;
}

/* 侧边栏 */
.sidebar {
  width: 250px;
  background: linear-gradient(180deg, #1e1b4b 0%, #312e81 100%);
  color: white;
  position: fixed;
  height: 100vh;
  overflow-y: auto;
  z-index: 100;
}

.sidebar-header {
  padding: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-header h1 {
  font-size: 1.25rem;
  font-weight: 600;
}

.sidebar-header p {
  font-size: 0.75rem;
  opacity: 0.7;
  margin-top: 4px;
}

.sidebar-nav {
  padding: 16px 0;
}

.nav-item {
  display: flex;
  align-items: center;
  padding: 12px 20px;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
}

.nav-item:hover {
  background: rgba(255, 255, 255, 0.1);
  color: white;
}

.nav-item.active {
  background: rgba(255, 255, 255, 0.15);
  color: white;
  border-left: 3px solid var(--primary-color);
}

.nav-item i {
  width: 24px;
  margin-right: 12px;
  font-size: 1.1rem;
}

.sidebar-footer {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 16px 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.user-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.875rem;
}

.user-details {
  flex: 1;
}

.user-name {
  font-size: 0.875rem;
  font-weight: 500;
}

.user-role {
  font-size: 0.75rem;
  opacity: 0.7;
}

/* 主内容区 */
.main-content {
  flex: 1;
  margin-left: 250px;
  padding: 24px;
}

/* 页面标题 */
.page-header {
  margin-bottom: 24px;
}

.page-header h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
}

.page-header p {
  color: var(--text-secondary);
  margin-top: 4px;
}

/* 卡片 */
.card {
  background: var(--card-bg);
  border-radius: 8px;
  box-shadow: var(--shadow);
  margin-bottom: 24px;
}

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

.card-title {
  font-size: 1rem;
  font-weight: 600;
}

.card-body {
  padding: 20px;
}

/* 统计卡片 */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--card-bg);
  border-radius: 8px;
  padding: 20px;
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 16px;
}

.stat-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.stat-icon.primary { background: rgba(79, 70, 229, 0.1); color: var(--primary-color); }
.stat-icon.success { background: rgba(16, 185, 129, 0.1); color: var(--success-color); }
.stat-icon.warning { background: rgba(245, 158, 11, 0.1); color: var(--warning-color); }
.stat-icon.danger { background: rgba(239, 68, 68, 0.1); color: var(--danger-color); }
.stat-icon.info { background: rgba(59, 130, 246, 0.1); color: var(--info-color); }

.stat-content {
  flex: 1;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.stat-change {
  font-size: 0.75rem;
  margin-top: 4px;
}

.stat-change.positive { color: var(--success-color); }
.stat-change.negative { color: var(--danger-color); }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  text-decoration: none;
}

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

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

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

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

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

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

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

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

.btn-sm {
  padding: 6px 12px;
  font-size: 0.75rem;
}

.btn-lg {
  padding: 12px 24px;
  font-size: 1rem;
}

/* 表单 */
.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.form-label.required::after {
  content: '*';
  color: var(--danger-color);
  margin-left: 4px;
}

.form-control {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 0.875rem;
  transition: border-color 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-control:disabled {
  background: var(--bg-color);
  cursor: not-allowed;
}

textarea.form-control {
  resize: vertical;
  min-height: 80px;
}

select.form-control {
  cursor: pointer;
}

/* 搜索栏 */
.search-bar {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.search-input {
  flex: 1;
  min-width: 200px;
}

/* 表格 */
.table-container {
  overflow-x: auto;
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.table th {
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--text-secondary);
  background: var(--bg-color);
}

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

.table td {
  font-size: 0.875rem;
}

/* 标签 */
.badge {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 500;
}

.badge-primary { background: rgba(79, 70, 229, 0.1); color: var(--primary-color); }
.badge-success { background: rgba(16, 185, 129, 0.1); color: var(--success-color); }
.badge-warning { background: rgba(245, 158, 11, 0.1); color: var(--warning-color); }
.badge-danger { background: rgba(239, 68, 68, 0.1); color: var(--danger-color); }
.badge-secondary { background: rgba(107, 114, 128, 0.1); color: var(--secondary-color); }

/* 分页 */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
}

.page-btn {
  padding: 6px 12px;
  border: 1px solid var(--border-color);
  background: white;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.875rem;
}

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

.page-btn.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.page-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* 模态框 */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s;
}

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

.modal {
  background: white;
  border-radius: 8px;
  width: 90%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.9);
  transition: transform 0.2s;
}

.modal-overlay.active .modal {
  transform: scale(1);
}

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

.modal-title {
  font-size: 1.125rem;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-secondary);
}

.modal-body {
  padding: 20px;
}

.modal-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* 登录页 */
.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #4f46e5 100%);
}

.login-box {
  background: white;
  padding: 40px;
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 400px;
}

.login-box h1 {
  text-align: center;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.login-box p {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.login-form .btn {
  width: 100%;
  justify-content: center;
  padding: 12px;
}

/* 空状态 */
.empty-state {
  text-align: center;
  padding: 48px 20px;
}

.empty-state i {
  font-size: 3rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.empty-state h3 {
  font-size: 1.125rem;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.empty-state p {
  color: var(--text-secondary);
}

/* 图表容器 */
.chart-container {
  position: relative;
  height: 300px;
}

/* 响应式 */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s;
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
  }

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

/* 加载动画 */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 1s ease-in-out infinite;
}

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

/* 提示消息 */
.toast {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 12px 20px;
  border-radius: 6px;
  color: white;
  font-weight: 500;
  z-index: 9999;
  transform: translateX(150%);
  transition: transform 0.3s;
}

.toast.show {
  transform: translateX(0);
}

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

/* 阶段进度条 */
.stage-progress {
  display: flex;
  align-items: center;
  gap: 4px;
}

.stage-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--border-color);
}

.stage-dot.active {
  background: var(--primary-color);
}

.stage-dot.current {
  background: var(--warning-color);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.3);
}

/* 操作按钮组 */
.action-btns {
  display: flex;
  gap: 8px;
}

.action-btn {
  padding: 4px 8px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.75rem;
  transition: all 0.2s;
}

.action-btn:hover {
  opacity: 0.8;
}

/* 筛选标签 */
.filter-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.filter-tag {
  padding: 4px 12px;
  background: var(--bg-color);
  border-radius: 16px;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.2s;
}

.filter-tag:hover,
.filter-tag.active {
  background: var(--primary-color);
  color: white;
}

/* 时间选择器 */
.time-filter {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
}

.time-filter button {
  padding: 6px 12px;
  border: 1px solid var(--border-color);
  background: white;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.875rem;
}

.time-filter button.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}