/* ============================================
   Table 组件 - Table Component
   ============================================ */

/* ========== 表格容器 ========== */
.table-container {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
}

/* ========== 基础表格样式 ========== */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-base);
}

/* ========== 表头 ========== */
thead {
  background: var(--color-bg-table-header);
  position: sticky;
  top: 0;
  z-index: 10;
}

th {
  padding: var(--spacing-3) var(--spacing-4);
  text-align: left;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
  user-select: none;
  -webkit-user-select: none;
}

th.sortable {
  cursor: pointer;
  transition: color var(--transition-fast);
}

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

th.sortable .sort-icon {
  display: inline-block;
  margin-left: var(--spacing-1);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

th.sortable:hover .sort-icon,
th.sortable.active .sort-icon {
  opacity: 1;
}

th .resize-handle {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  cursor: col-resize;
  pointer-events: none;
  transition: background-color var(--transition-fast);
}

th:hover .resize-handle {
  pointer-events: auto;
}

th .resize-handle:hover {
  background-color: var(--color-primary);
}

/* ========== 表格单元格 ========== */
td {
  padding: var(--spacing-3) var(--spacing-4);
  color: var(--color-text-primary);
  border-bottom: 1px solid var(--color-border-light);
  vertical-align: middle;
}

/* ========== 表格行 ========== */
tbody tr {
  transition: background-color var(--transition-fast);
}

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

tbody tr:nth-child(even) {
  background-color: var(--color-bg-table-row-alt);
}

tbody tr:nth-child(even):hover {
  background-color: var(--color-bg-table-hover);
}

/* ========== 可选中行 ========== */
tbody tr.selectable {
  cursor: pointer;
}

tbody tr.selected {
  background-color: var(--color-primary-alpha-10);
}

tbody tr.selected:hover {
  background-color: var(--color-primary-alpha-20);
}

/* ========== 空状态 ========== */
.table-empty {
  padding: var(--spacing-12) var(--spacing-4);
  text-align: center;
  color: var(--color-text-muted);
}

.table-empty-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-4);
  opacity: 0.3;
}

/* ========== 加载状态 ========== */
.table-loading {
  padding: var(--spacing-8) var(--spacing-4);
  text-align: center;
}

.table-loading .spinner {
  display: inline-block;
  width: 32px;
  height: 32px;
  border: 3px solid var(--color-border-light);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* ========== 分页 ========== */
.table-pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-4);
  border-top: 1px solid var(--color-border-light);
  background: var(--color-bg-secondary);
}

.pagination-info {
  font-size: var(--font-sm);
  color: var(--color-text-muted);
}

.pagination-controls {
  display: flex;
  gap: var(--spacing-2);
}

.pagination-btn {
  min-width: 32px;
  height: 32px;
  padding: 0 var(--spacing-2);
  font-size: var(--font-sm);
  color: var(--color-text-secondary);
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.pagination-btn:hover:not(:disabled) {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-primary-alpha-10);
}

.pagination-btn.active {
  color: white;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border-color: var(--color-primary);
}

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

/* ========== 紧凑模式 ========== */
.table-compact th,
.table-compact td {
  padding: var(--spacing-2) var(--spacing-3);
}

/* ========== 边框模式 ========== */
.table-bordered th,
.table-bordered td {
  border: 1px solid var(--color-border-light);
}

/* ========== 无边框模式 ========== */
.table-borderless th,
.table-borderless td {
  border-bottom: none;
}

/* ========== 斑马纹行 ========== */
.table-zebra tbody tr:nth-child(even) {
  background-color: var(--color-bg-table-row-alt);
}

/* ========== 单元格对齐 ========== */
.td-center {
  text-align: center;
}

.td-right {
  text-align: right;
}

.td-left {
  text-align: left;
}