.main-container {
  display: flex;
  width: 100%;
  height: 100vh;
  min-height: 100vh;
  overflow: hidden;
}

.sidebar {
  width: 240px;
  min-width: 240px;
  background-color: #001529;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: width 0.25s ease, min-width 0.25s ease;
  z-index: 10;
}

.sidebar.collapsed {
  width: 64px;
  min-width: 64px;
}

.sidebar-logo {
  height: 56px;
  min-height: 56px;
  display: flex;
  align-items: center;
  padding: 0 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.sidebar-logo-icon {
  font-size: 22px;
  flex-shrink: 0;
}

.sidebar-logo-text {
  margin-left: 10px;
  color: #ffffff;
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
  transition: opacity 0.2s;
}

.sidebar.collapsed .sidebar-logo-text,
.sidebar.collapsed .menu-text {
  opacity: 0;
  width: 0;
  overflow: hidden;
}

.sidebar-menu {
  flex: 1;
  padding: 8px 0;
  overflow-y: auto;
  overflow-x: hidden;
}

.sidebar-menu::-webkit-scrollbar {
  width: 4px;
}

.sidebar-menu::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 2px;
}

.menu-item {
  display: flex;
  align-items: center;
  padding: 0 20px;
  height: 44px;
  color: rgba(255, 255, 255, 0.75);
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
  white-space: nowrap;
  user-select: none;
}

.menu-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background-color: var(--color-primary);
  transform: scaleY(0);
  transition: transform 0.2s;
}

.menu-item:hover {
  background-color: rgba(255, 255, 255, 0.06);
  color: #ffffff;
}

.menu-item.active {
  background-color: var(--color-primary);
  color: #ffffff;
}

.menu-item.active::before {
  transform: scaleY(1);
}

.menu-icon {
  font-size: 16px;
  flex-shrink: 0;
  width: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.menu-text {
  margin-left: 12px;
  font-size: 14px;
  transition: opacity 0.2s;
}

.sidebar-toggle {
  height: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.6);
  cursor: pointer;
  transition: all 0.2s;
}

.sidebar-toggle:hover {
  background-color: rgba(255, 255, 255, 0.06);
  color: #ffffff;
}

.toggle-icon {
  font-size: 18px;
  font-weight: 600;
  transition: transform 0.25s;
}

.sidebar.collapsed .toggle-icon {
  transform: rotate(180deg);
}

.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow: hidden;
  background-color: var(--color-bg);
}

.top-header {
  height: 56px;
  min-height: 56px;
  background-color: #ffffff;
  box-shadow: 0 1px 4px rgba(0, 21, 41, 0.08);
  display: flex;
  align-items: center;
  padding: 0 24px;
  position: relative;
  z-index: 5;
}

.header-left {
  flex: 1;
  display: flex;
  align-items: center;
}

.page-breadcrumb {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
}

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

.user-menu {
  display: flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color 0.2s;
  position: relative;
}

.user-menu:hover {
  background-color: var(--color-bg-hover);
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: #fff;
}

.user-name {
  margin-left: 10px;
  font-size: 14px;
  color: var(--color-text);
  font-weight: 500;
}

.dropdown-arrow {
  margin-left: 6px;
  font-size: 10px;
  color: var(--color-text-secondary);
  transition: transform 0.2s;
}

.user-menu:hover .dropdown-arrow {
  transform: rotate(180deg);
}

.user-dropdown {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  min-width: 140px;
  background-color: #fff;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  padding: 4px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: all 0.2s;
}

.user-menu:hover .user-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  padding: 8px 16px;
  font-size: 14px;
  color: var(--color-text);
  transition: background-color 0.15s;
  display: flex;
  align-items: center;
  gap: 8px;
}

.dropdown-item:hover {
  background-color: var(--color-bg-hover);
  color: var(--color-primary);
}

.app-container {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  position: relative;
}

.app-container::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

.app-container::-webkit-scrollbar-thumb {
  background: #d1d5db;
  border-radius: 4px;
}

.app-container::-webkit-scrollbar-thumb:hover {
  background: #9ca3af;
}

.page-header {
  background-color: #fff;
  padding: 16px 24px;
  border-bottom: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.page-header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin: 0;
}

.page-header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-content {
  padding: 20px 24px;
}

.filter-bar {
  background-color: #fff;
  padding: 16px 20px;
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
  border: 1px solid var(--color-border-light);
}

.filter-bar form {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 12px;
}

.filter-bar .form-group {
  margin-bottom: 0;
  min-width: 180px;
}

.filter-bar .form-group .form-label {
  font-size: 13px;
  margin-bottom: 6px;
}

.filter-bar .filter-actions {
  display: flex;
  gap: 8px;
  margin-left: auto;
}

.stat-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.stat-card {
  background-color: #fff;
  padding: 20px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  transition: all 0.25s;
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--color-primary), #4096ff);
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
}

.stat-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 12px;
}

.stat-card-icon.primary {
  background-color: rgba(22, 119, 255, 0.1);
}

.stat-card-icon.success {
  background-color: rgba(82, 196, 26, 0.1);
}

.stat-card-icon.warning {
  background-color: rgba(250, 173, 20, 0.1);
}

.stat-card-icon.danger {
  background-color: rgba(255, 77, 79, 0.1);
}

.stat-card-label {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 4px;
}

.stat-card-value {
  font-size: 26px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
}

.stat-card-desc {
  margin-top: 6px;
  font-size: 12px;
  color: var(--color-text-muted);
}

.modal-container {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
}

.modal-container.active {
  display: flex;
}

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(2px);
  animation: modalFadeIn 0.2s ease;
}

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

.modal {
  position: relative;
  width: 560px;
  max-width: calc(100vw - 32px);
  max-height: calc(100vh - 64px);
  background-color: #fff;
  border-radius: var(--radius-xl);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  animation: modalSlideIn 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-16px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.modal-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
}

.modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--color-text-secondary);
  font-size: 20px;
  line-height: 1;
  transition: all 0.15s;
  border: none;
  background: none;
}

.modal-close:hover {
  background-color: var(--color-bg-hover);
  color: var(--color-text);
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: 12px 24px;
  border-top: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  flex-shrink: 0;
  background-color: #fafafa;
}

.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.toast {
  min-width: 280px;
  max-width: 360px;
  padding: 12px 16px;
  border-radius: var(--radius-lg);
  background-color: #fff;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12), 0 2px 6px rgba(0, 0, 0, 0.06);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  pointer-events: auto;
  animation: toastSlideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  border-left: 4px solid;
}

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

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

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

.toast-icon {
  font-size: 18px;
  flex-shrink: 0;
  line-height: 1.3;
}

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

.toast-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 2px;
  color: var(--color-text);
}

.toast-message {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.4;
}

.toast-success {
  border-left-color: var(--color-success);
}

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

.toast-warning {
  border-left-color: var(--color-warning);
}

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

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

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

.toast-info {
  border-left-color: var(--color-primary);
}

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

.table-wrapper {
  background-color: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  overflow: hidden;
}

.table-wrapper .table {
  margin: 0;
}

.table-wrapper .table-footer {
  padding: 0 16px;
  border-top: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.action-btns {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.action-btn {
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s;
  color: var(--color-text-secondary);
  font-size: 14px;
  border: none;
  background: transparent;
}

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

.action-btn.danger:hover {
  background-color: #fff1f0;
  color: var(--color-error);
}

.empty-state {
  padding: 60px 20px;
  text-align: center;
  color: var(--color-text-muted);
}

.empty-state-icon {
  font-size: 48px;
  margin-bottom: 12px;
  opacity: 0.5;
}

.empty-state-text {
  font-size: 14px;
}

@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 100;
    transform: translateX(-100%);
  }

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

  .page-content {
    padding: 16px;
  }

  .filter-bar .form-group {
    min-width: 100%;
    flex: 1;
  }

  .filter-bar .filter-actions {
    margin-left: 0;
    width: 100%;
  }
}