/**
 * 分页系统样式 - Pagination Styles
 * 支持传统分页和无限滚动两种模式
 * 基于现代设计理念的分页组件
 */

/* 分页容器 */
.pagination-container {
  margin: 2rem 0;
  padding: 1.5rem;
  background: var(--card-bg, #ffffff);
  border: 1px solid var(--border-color, #f0f0f0);
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

/* 分页控制区域 */
.pagination-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

/* 模式切换按钮 */
.pagination-mode-toggle {
  display: flex;
  background: var(--surface-color, #f5f5f5);
  border-radius: 8px;
  padding: 4px;
  gap: 2px;
}

.mode-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: transparent;
  border: none;
  border-radius: 6px;
  color: var(--text-secondary, #8c8c8c);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
}

.mode-btn:hover {
  color: var(--primary-hover, #40a9ff);
  background: rgba(24, 144, 255, 0.1);
}

.mode-btn.active {
  color: var(--primary-color, #1890ff);
  background: var(--card-bg, #ffffff);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.mode-btn i {
  font-size: 0.875rem;
}

/* 分页信息 */
.pagination-info {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.875rem;
  color: var(--text-secondary, #8c8c8c);
}

.current-info,
.items-info {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.current-page,
.total-pages,
.total-items {
  font-weight: 600;
  color: var(--primary-color, #1890ff);
}

/* 传统分页导航 */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.page-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: var(--surface-color, #f5f5f5);
  border: 1px solid var(--border-color, #d9d9d9);
  border-radius: 8px;
  color: var(--text-primary, #262626);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
}

.page-btn:hover:not(:disabled) {
  color: var(--primary-hover, #40a9ff);
  background: var(--surface-color, rgba(24, 144, 255, 0.05));
  border-color: var(--primary-color, #1890ff);
  transform: translateY(-1px);
}

.page-btn:disabled,
.page-btn.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.page-btn i {
  font-size: 0.75rem;
}

/* 页码数字 */
.page-numbers {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.page-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--surface-color, #f5f5f5);
  border: 1px solid var(--border-color, #d9d9d9);
  border-radius: 8px;
  color: var(--text-primary, #262626);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
}

.page-number:hover {
  color: var(--primary-hover, #40a9ff);
  background: var(--surface-color, rgba(24, 144, 255, 0.05));
  border-color: var(--primary-color, #1890ff);
  transform: translateY(-1px);
}

.page-number.active {
  color: #ffffff;
  background: var(--primary-color, #1890ff);
  border-color: var(--primary-color, #1890ff);
  font-weight: 600;
  cursor: default;
  transform: none;
}

.page-ellipsis {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--text-secondary, #8c8c8c);
  font-size: 0.875rem;
  cursor: default;
}

/* 无限滚动控制 */
.infinite-scroll-controls {
  text-align: center;
  padding: 1rem 0;
}

.load-more-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  background: var(--surface-color, #f5f5f5);
  border: 2px solid var(--border-color, #d9d9d9);
  border-radius: 12px;
  color: var(--text-primary, #262626);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
}

.load-more-btn:hover {
  color: var(--primary-color, #1890ff);
  background: var(--surface-color, rgba(24, 144, 255, 0.05));
  border-color: var(--primary-color, #1890ff);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(24, 144, 255, 0.2);
}

.load-more-btn:active {
  transform: translateY(0);
}

.load-more-btn i {
  font-size: 0.875rem;
}

/* 加载指示器 */
.loading-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 2rem;
}

.loading-spinner {
  width: 48px;
  height: 48px;
}

.spinner {
  width: 100%;
  height: 100%;
  border: 4px solid var(--border-color, #f0f0f0);
  border-top: 4px solid var(--primary-color, #1890ff);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.loading-text {
  font-size: 0.875rem;
  color: var(--text-secondary, #8c8c8c);
  margin: 0;
}

/* 结束指示器 */
.end-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 2rem;
  color: var(--text-secondary, #8c8c8c);
}

.end-indicator i {
  font-size: 2rem;
  color: var(--success-color, #52c41a);
}

.end-indicator p {
  font-size: 0.875rem;
  margin: 0;
}

/* 加载错误 */
.load-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 2rem;
  background: var(--error-bg, #fff2f0);
  border: 1px solid var(--error-border, #ffccc7);
  border-radius: 8px;
  margin: 1rem 0;
}

.load-error i {
  font-size: 2rem;
  color: var(--error-color, #ff4d4f);
}

.load-error p {
  font-size: 0.875rem;
  color: var(--error-color, #ff4d4f);
  margin: 0;
}

.retry-btn {
  padding: 0.5rem 1rem;
  background: var(--error-color, #ff4d4f);
  border: none;
  border-radius: 6px;
  color: #ffffff;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
}

.retry-btn:hover {
  background: var(--error-hover, #ff7875);
  transform: translateY(-1px);
}

/* 滚动哨兵 */
.scroll-sentinel {
  pointer-events: none;
  opacity: 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .pagination-container {
    margin: 1rem 0;
    padding: 1rem;
  }
  
  .pagination-controls {
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
  }
  
  .pagination-mode-toggle {
    justify-content: center;
  }
  
  .pagination-info {
    justify-content: center;
    flex-wrap: wrap;
  }
  
  .pagination {
    gap: 0.25rem;
  }
  
  .page-btn {
    padding: 0.5rem 0.75rem;
    font-size: 0.75rem;
  }
  
  .page-number {
    width: 36px;
    height: 36px;
    font-size: 0.75rem;
  }
  
  .load-more-btn {
    padding: 0.875rem 1.5rem;
    font-size: 0.875rem;
  }
}

@media (max-width: 480px) {
  .pagination-container {
    padding: 0.75rem;
  }
  
  .mode-btn {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
  }
  
  .mode-btn span {
    display: none;
  }
  
  .pagination-info {
    font-size: 0.75rem;
  }
  
  .page-btn span {
    display: none;
  }
  
  .page-number {
    width: 32px;
    height: 32px;
    font-size: 0.75rem;
  }
  
  .load-more-btn {
    padding: 0.75rem 1rem;
    font-size: 0.75rem;
  }
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
  .pagination-container {
    border: 2px solid var(--text-primary, #000000);
  }
  
  .page-btn,
  .page-number,
  .load-more-btn {
    border: 2px solid var(--text-primary, #000000);
  }
  
  .page-number.active {
    border: 2px solid var(--primary-color, #1890ff);
  }
}

/* 减少动画模式 */
@media (prefers-reduced-motion: reduce) {
  .page-btn,
  .page-number,
  .load-more-btn,
  .mode-btn {
    transition: none !important;
  }
  
  .spinner {
    animation: none !important;
  }
  
  .loading-spinner::after {
    content: '⟳';
    font-size: 2rem;
    color: var(--primary-color, #1890ff);
  }
}

/* 打印样式 */
@media print {
  .pagination-container {
    display: none !important;
  }
}

/* 无障碍支持 */
.page-btn:focus,
.page-number:focus,
.load-more-btn:focus,
.mode-btn:focus {
  outline: 2px solid var(--primary-color, #1890ff);
  outline-offset: 2px;
}

/* 键盘导航提示 */
.pagination-container:focus-within::before {
  content: '使用方向键导航页面，Home/End键跳转首末页';
  position: absolute;
  top: -2rem;
  left: 0;
  font-size: 0.75rem;
  color: var(--text-secondary, #8c8c8c);
  background: var(--card-bg, #ffffff);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  border: 1px solid var(--border-color, #f0f0f0);
  z-index: 10;
}

/* 暗色主题适配 */
[data-theme="dark"] .pagination-container {
  background: var(--card-bg, #1f1f1f);
  border-color: var(--border-color, #303030);
}

[data-theme="dark"] .mode-btn {
  color: var(--text-secondary, #a0a0a0);
}

[data-theme="dark"] .mode-btn.active {
  background: var(--card-bg, #2a2a2a);
  color: var(--primary-color, #40a9ff);
}

[data-theme="dark"] .page-btn,
[data-theme="dark"] .page-number,
[data-theme="dark"] .load-more-btn {
  background: var(--surface-color, #2a2a2a);
  border-color: var(--border-color, #404040);
  color: var(--text-primary, #ffffff);
}

[data-theme="dark"] .page-number.active {
  background: var(--primary-color, #1890ff);
  color: #ffffff;
}

[data-theme="dark"] .loading-indicator,
[data-theme="dark"] .end-indicator {
  color: var(--text-secondary, #a0a0a0);
}