/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 40px;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

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

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

.btn-primary:active:not(:disabled) {
  background-color: var(--color-primary-active);
}

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

.btn-secondary:hover:not(:disabled) {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

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

.btn-danger:hover:not(:disabled),
.btn.danger.solid:hover:not(:disabled) {
  background-color: #ff7875;
}

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

.btn-warning:hover:not(:disabled),
.btn.warning.solid:hover:not(:disabled) {
  background-color: #ffc53d;
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-ghost:hover:not(:disabled) {
  background-color: var(--color-primary);
  color: white;
}

/* 按钮尺寸 */
.btn-sm {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-xs);
  min-height: 32px;
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: var(--font-size-base);
  min-height: 48px;
}

/* ===== 输入框 ===== */
.input {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  transition: border-color var(--transition-fast);
}

.input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.2);
}

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

.input-error {
  border-color: var(--color-error);
}

.input-error:focus {
  box-shadow: 0 0 0 2px rgba(255, 77, 79, 0.2);
}

/* ===== 卡片 ===== */
.card {
  background-color: var(--color-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-lg);
  border: 1px solid var(--color-border);
}

.card-header {
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin: 0;
}

.card-body {
  color: var(--color-text-secondary);
}

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

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

.table th {
  background-color: var(--color-bg-secondary);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

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

/* ===== 表单 ===== */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

.form-label-required::after {
  content: ' *';
  color: var(--color-error);
}

.form-error {
  margin-top: var(--spacing-xs);
  font-size: var(--font-size-xs);
  color: var(--color-error);
}

/* ===== 徽章 ===== */
.badge {
  display: inline-block;
  padding: 2px 8px;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-full);
}

.badge-success {
  background-color: rgba(82, 196, 26, 0.1);
  color: var(--color-success);
}

.badge-warning {
  background-color: rgba(250, 173, 20, 0.1);
  color: var(--color-warning);
}

.badge-error {
  background-color: rgba(255, 77, 79, 0.1);
  color: var(--color-error);
}

.badge-info {
  background-color: rgba(19, 194, 194, 0.1);
  color: var(--color-info);
}

/* ===== 加载 Spinner ===== */
.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner-lg {
  width: 48px;
  height: 48px;
  border-width: 4px;
}

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

/* ===== 空状态 ===== */
.empty-state {
  text-align: center;
  padding: var(--spacing-xxl) var(--spacing-lg);
  color: var(--color-text-tertiary);
}

.empty-state-icon {
  font-size: 48px;
  margin-bottom: var(--spacing-md);
}

.empty-state-text {
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-md);
}

/* ===== Toast 通知系统 ===== */
.toast-container {
  position: fixed;
  top: var(--spacing-md);
  right: var(--spacing-md);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  pointer-events: none;
}

.toast {
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-width: 280px;
  max-width: 480px;
  animation: toastSlideIn 0.3s ease;
  pointer-events: auto;
}

@keyframes toastSlideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

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

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

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

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

.toast-message {
  flex: 1;
  font-size: var(--font-size-sm);
}

.toast-close {
  background: none;
  border: none;
  color: inherit;
  font-size: 20px;
  cursor: pointer;
  margin-left: var(--spacing-md);
  opacity: 0.8;
  padding: 0;
  line-height: 1;
}

.toast-close:hover {
  opacity: 1;
}

/* Toast 过渡动画 */
.toast-enter {
  animation: toastSlideIn 0.3s ease;
}

.toast-leave {
  animation: toastSlideOut 0.25s ease forwards;
}

@keyframes toastSlideOut {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(100%);
    opacity: 0;
  }
}

/* ===== 全局 Loading 遮罩 ===== */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9998;
}

.loading-spinner {
  text-align: center;
  color: white;
}

.loading-spinner .spinner {
  margin: 0 auto var(--spacing-md);
  border-color: rgba(255, 255, 255, 0.3);
  border-top-color: white;
}

.loading-spinner p {
  font-size: var(--font-size-base);
  margin: 0;
}

/* Loading 过渡动画 */
.loading-fade-in {
  animation: fadeIn 0.2s ease;
}

.loading-fade-out {
  animation: fadeOut 0.2s ease forwards;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeOut {
  from { opacity: 1; }
  to { opacity: 0; }
}

/* ===== Modal 危险/警告类型 ===== */
.modal-danger .modal-header {
  background-color: var(--color-error);
  color: white;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.modal-danger .modal-header h2,
.modal-danger .modal-header p {
  color: white;
}

.modal-warning .modal-header {
  background-color: var(--color-warning);
  color: white;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.modal-warning .modal-header h2,
.modal-warning .modal-header p {
  color: white;
}

/* ===== 暗色模式适配 ===== */

/* ===== Chart.js 图表容器 ===== */
.chart-container {
  position: relative;
  width: 100%;
  min-height: 200px;
  padding: var(--spacing-sm);
}

.chart-container canvas {
  max-width: 100%;
}

.chart-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
}

.chart-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-md) 0;
}

[data-theme="dark"] .chart-container {
  background: var(--color-bg-secondary);
}

/* ===== 暗色模式适配 ===== */
[data-theme="dark"] .toast {
  box-shadow: var(--shadow-lg);
}

[data-theme="dark"] .loading-overlay {
  background-color: rgba(0, 0, 0, 0.75);
}

[data-theme="dark"] .modal-danger .modal-header {
  background-color: #a8071a;
}

[data-theme="dark"] .modal-warning .modal-header {
  background-color: #ad6800;
}

[data-theme="dark"] .notification-panel {
  background: var(--color-bg);
  border-color: var(--color-border);
}

[data-theme="dark"] .notification-header {
  background: var(--color-bg);
  border-bottom-color: var(--color-border);
}

[data-theme="dark"] .notification-item {
  border-bottom-color: var(--color-border);
}

[data-theme="dark"] .notification-item:hover {
  background: var(--color-bg-secondary);
}

[data-theme="dark"] .notification-item.unread {
  background: rgba(24, 144, 255, 0.08);
}

[data-theme="dark"] .notification-item.unread:hover {
  background: rgba(24, 144, 255, 0.12);
}

[data-theme="dark"] .backup-table th {
  background-color: var(--color-bg-tertiary);
}

[data-theme="dark"] .backup-table tr:hover {
  background-color: var(--color-bg-secondary);
}

[data-theme="dark"] .audit-log-table .data-table th {
  background: var(--color-bg-tertiary);
  border-bottom-color: var(--color-border);
}

[data-theme="dark"] .audit-log-table .data-table td {
  border-bottom-color: var(--color-border);
}

[data-theme="dark"] .audit-log-table .data-table tbody tr:hover {
  background: var(--color-bg-secondary);
}

[data-theme="dark"] .table-mobile tbody tr {
  background: var(--color-bg-secondary);
  border-color: var(--color-border);
}

[data-theme="dark"] .table-mobile td {
  border-bottom-color: var(--color-border);
}

/* ===== 离线状态 ===== */
#offline-banner {
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from { transform: translateY(-100%); }
  to { transform: translateY(0); }
}

#offline-queue-badge {
  display: none;
  background: var(--color-warning);
  color: #fff;
  border-radius: 50%;
  width: 20px;
  height: 20px;
  font-size: 11px;
  line-height: 20px;
  text-align: center;
  margin-left: 4px;
}

/* ===== 审计日志样式 ===== */
.audit-log-table {
  overflow-x: auto;
}

.audit-log-table .data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.audit-log-table .data-table th {
  background: var(--color-bg-secondary);
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: left;
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  border-bottom: 2px solid var(--color-border);
  white-space: nowrap;
}

.audit-log-table .data-table td {
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

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

.audit-detail {
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
}

.role-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  text-transform: uppercase;
}

.role-admin {
  background: #fef3c7;
  color: #92400e;
}

.role-manager {
  background: #dbeafe;
  color: #1e40af;
}

.role-employee {
  background: #e5e7eb;
  color: #374151;
}

.action-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
}

.action-login {
  background: #d1fae5;
  color: #065f46;
}

.action-logout {
  background: #fee2e2;
  color: #991b1b;
}

.action-create {
  background: #dbeafe;
  color: #1e40af;
}

.action-update {
  background: #fef3c7;
  color: #92400e;
}

.action-delete {
  background: #fee2e2;
  color: #991b1b;
}

.action-export {
  background: #e0e7ff;
  color: #3730a3;
}

.action-permission_change {
  background: #fce7f3;
  color: #9d174d;
}

.action-password_change {
  background: #f3e8ff;
  color: #6b21a8;
}

.action-backup {
  background: #ccfbf1;
  color: #115e59;
}

.action-session_timeout {
  background: #fef9c3;
  color: #854d0e;
}

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) 0;
}

.page-info {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* ===== 备份管理 ===== */
.backup-management {
  margin-bottom: var(--spacing-lg);
}

.backup-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: var(--spacing-md);
}

.backup-table th,
.backup-table td {
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.backup-table th {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background-color: var(--color-bg-secondary);
}

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

.backup-filename {
  font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
  font-size: var(--font-size-xs);
  color: var(--color-primary);
  word-break: break-all;
  max-width: 280px;
}

.backup-actions {
  display: flex;
  gap: var(--spacing-xs);
  white-space: nowrap;
}

.backup-actions .btn-sm {
  font-size: var(--font-size-xs);
  padding: 4px 8px;
  min-height: 28px;
}

/* ===== 通知系统 ===== */
.notification-bell {
  position: relative;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  transition: background var(--transition-fast);
}

.notification-bell:hover {
  background: var(--color-bg-tertiary);
}

.notification-bell-icon {
  font-size: 20px;
  line-height: 1;
}

.notification-badge {
  position: absolute;
  top: -2px;
  right: -2px;
  background: var(--color-error);
  color: #fff;
  border-radius: var(--radius-full);
  min-width: 18px;
  height: 18px;
  font-size: 11px;
  font-weight: var(--font-weight-bold);
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  padding: 0 4px;
  box-shadow: 0 0 0 2px var(--color-bg);
}

.notification-panel {
  position: absolute;
  top: 100%;
  right: 0;
  width: 360px;
  max-height: 480px;
  overflow-y: auto;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  margin-top: 4px;
}

.notification-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  background: var(--color-bg);
  z-index: 1;
}

.notification-header h4 {
  margin: 0;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
}

.notification-list {
  max-height: 400px;
  overflow-y: auto;
}

.notification-item {
  display: flex;
  gap: 12px;
  padding: 12px var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
  cursor: pointer;
  transition: background var(--transition-fast);
  align-items: flex-start;
}

.notification-item:hover {
  background: var(--color-bg-secondary);
}

.notification-item.unread {
  background: rgba(24, 144, 255, 0.04);
}

.notification-item.unread:hover {
  background: rgba(24, 144, 255, 0.08);
}

.notification-icon {
  font-size: 24px;
  flex-shrink: 0;
  line-height: 1;
}

.notification-content {
  flex: 1;
  min-width: 0;
}

.notification-title {
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  line-height: 1.4;
}

.notification-message {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  margin-top: 2px;
  line-height: 1.4;
  word-break: break-word;
}

.notification-time {
  font-size: 11px;
  color: var(--color-text-tertiary);
  margin-top: 4px;
}

.notification-delete {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border: none;
  background: none;
  color: var(--color-text-tertiary);
  cursor: pointer;
  font-size: 14px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.notification-item:hover .notification-delete {
  opacity: 1;
}

.notification-delete:hover {
  background: var(--color-bg-tertiary);
  color: var(--color-error);
}

.notification-empty {
  padding: 32px var(--spacing-md);
  text-align: center;
  color: var(--color-text-tertiary);
  font-size: var(--font-size-sm);
}

.icon-btn-sm {
  border: none;
  background: none;
  cursor: pointer;
  font-size: 18px;
  color: var(--color-text-tertiary);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
}

.icon-btn-sm:hover {
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
}

/* 移动端通知面板适配 */
@media (max-width: 768px) {
  .notification-panel {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    width: 100%;
    max-height: 100vh;
    border-radius: 0;
    margin: 0;
    z-index: 2000;
  }
  .notification-list {
    max-height: calc(100vh - 60px);
  }
}

/* ═══ 性能优化：图片懒加载 ═══ */
img[data-src] {
  opacity: 0.3;
  transition: opacity 0.3s ease;
}

img.lazy-loaded,
img:not([data-src]) {
  opacity: 1;
  transition: opacity 0.3s ease;
}

/* 虚拟滚动容器 */
.virtual-scroller {
  overflow: auto;
  -webkit-overflow-scrolling: touch;
}