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

/* ===== Light Mode (Default) ===== */
:root {
  --color-bg: #F3F4F6;
  --color-card: #FFFFFF;
  --color-text: #374151;
  --color-text-body: #374151;
  --color-text-secondary: #4B5563;
  --color-text-muted: #6B7280;
  --color-text-light: #9CA3AF;
  --color-heading: #111827;
  --color-border: #E5E7EB;
  --color-border-light: #F3F4F6;
  --color-input-border: #D1D5DB;
  --color-hover: #F9FAFB;
  --color-overlay: rgba(0, 0, 0, 0.4);
  --color-loading-overlay: rgba(255, 255, 255, 0.8);
  --color-table-header: #F9FAFB;

  --color-primary: #4F46E5;
  --color-primary-hover: #4338CA;
  --color-primary-light: rgba(79, 70, 229, 0.1);
  --color-primary-lighter: rgba(79, 70, 229, 0.3);
  --color-primary-ring: rgba(79, 70, 229, 0.15);

  --color-success: #10B981;
  --color-success-hover: #059669;
  --color-warning: #F59E0B;
  --color-warning-hover: #D97706;
  --color-danger: #EF4444;
  --color-danger-hover: #DC2626;

  --color-badge-pending-bg: #FEF3C7;
  --color-badge-pending-text: #92400E;
  --color-badge-success-bg: #D1FAE5;
  --color-badge-success-text: #065F46;
  --color-badge-failed-bg: #FEE2E2;
  --color-badge-failed-text: #991B1B;
  --color-badge-rejected-bg: #FEE2E2;
  --color-badge-rejected-text: #991B1B;
  --color-badge-processing-bg: rgba(79, 70, 229, 0.1);
  --color-badge-processing-text: #4F46E5;

  --color-sidebar: #1E1B4B;
  --color-sidebar-text: rgba(255, 255, 255, 0.7);
  --color-sidebar-text-hover: #FFFFFF;
  --color-sidebar-border: rgba(255, 255, 255, 0.1);
  --color-sidebar-active-bg: rgba(79, 70, 229, 0.3);
  --color-sidebar-active-border: #4F46E5;
  --color-sidebar-footer-hover-bg: rgba(239, 68, 68, 0.15);
  --color-sidebar-footer-hover-text: #EF4444;

  --shadow-login: 0 10px 40px rgba(0, 0, 0, 0.15);
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-modal: -4px 0 20px rgba(0, 0, 0, 0.1);
  --shadow-toast: 0 4px 12px rgba(0, 0, 0, 0.15);
  --color-spinner-track: #E5E7EB;
  --color-spinner-fill: #4F46E5;
}

/* ===== Dark Mode ===== */
[data-theme='dark'] {
  --color-bg: #111827;
  --color-card: #1F2937;
  --color-text: #D1D5DB;
  --color-text-body: #D1D5DB;
  --color-text-secondary: #9CA3AF;
  --color-text-muted: #6B7280;
  --color-text-light: #4B5563;
  --color-heading: #F9FAFB;
  --color-border: #374151;
  --color-border-light: #374151;
  --color-input-border: #4B5563;
  --color-hover: #374151;
  --color-overlay: rgba(0, 0, 0, 0.7);
  --color-loading-overlay: rgba(17, 24, 39, 0.8);
  --color-table-header: #1F2937;

  --color-success: #10B981;
  --color-success-hover: #34D399;
  --color-warning: #F59E0B;
  --color-warning-hover: #FBBF24;
  --color-danger: #EF4444;
  --color-danger-hover: #F87171;

  --color-badge-pending-bg: rgba(251, 191, 36, 0.15);
  --color-badge-pending-text: #FBBF24;
  --color-badge-success-bg: rgba(16, 185, 129, 0.15);
  --color-badge-success-text: #34D399;
  --color-badge-failed-bg: rgba(239, 68, 68, 0.15);
  --color-badge-failed-text: #F87171;
  --color-badge-rejected-bg: rgba(239, 68, 68, 0.15);
  --color-badge-rejected-text: #F87171;
  --color-badge-processing-bg: rgba(129, 140, 248, 0.15);
  --color-badge-processing-text: #818CF8;

  --shadow-login: 0 10px 40px rgba(0, 0, 0, 0.5);
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-modal: -4px 0 20px rgba(0, 0, 0, 0.5);
  --shadow-toast: 0 4px 12px rgba(0, 0, 0, 0.5);
  --color-spinner-track: #374151;
}

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

a {
  text-decoration: none;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  outline: none;
  font-family: inherit;
  font-size: inherit;
}

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  outline: none;
}

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-sidebar) 0%, var(--color-primary) 100%);
}

.login-card {
  background: var(--color-card);
  border-radius: 16px;
  padding: 48px 40px;
  width: 400px;
  box-shadow: var(--shadow-login);
}

.login-card h1 {
  text-align: center;
  font-size: 24px;
  font-weight: 700;
  color: var(--color-heading);
  margin-bottom: 8px;
}

.login-card .subtitle {
  text-align: center;
  color: var(--color-text-muted);
  margin-bottom: 32px;
  font-size: 14px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 6px;
}

.form-group input {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-input-border);
  border-radius: 8px;
  font-size: 14px;
  transition: border-color 0.2s, box-shadow 0.2s;
  background: var(--color-card);
  color: var(--color-text);
}

.form-group input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-ring);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  gap: 6px;
}

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

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

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

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

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

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

.btn-warning {
  background: var(--color-warning);
  color: #78350F;
}

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

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

.btn-secondary:hover {
  background: var(--color-input-border);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
  border-radius: 6px;
}

.btn-block {
  width: 100%;
}

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

.layout,
.app-container {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 240px;
  background: var(--color-sidebar);
  color: #fff;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
}

.sidebar-header {
  padding: 24px 20px;
  border-bottom: 1px solid var(--color-sidebar-border);
}

.sidebar-header h2 {
  font-size: 18px;
  font-weight: 700;
}

.sidebar-header p {
  font-size: 12px;
  color: var(--color-sidebar-text);
  margin-top: 4px;
}

.sidebar-nav {
  flex: 1;
  padding: 12px 0;
  overflow-y: auto;
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  padding: 12px 20px;
  color: var(--color-sidebar-text);
  font-size: 14px;
  transition: all 0.2s;
  gap: 12px;
}

.sidebar-nav a:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-sidebar-text-hover);
}

.sidebar-nav a.active {
  background: var(--color-sidebar-active-bg);
  color: var(--color-sidebar-text-hover);
  border-right: 3px solid var(--color-sidebar-active-border);
}

.sidebar-nav a .nav-icon {
  width: 20px;
  text-align: center;
  font-size: 16px;
}

/* 分组菜单 */
.nav-group {
  margin-bottom: 2px;
}

.nav-group-header {
  display: flex;
  align-items: center;
  padding: 12px 20px;
  color: var(--color-sidebar-text);
  font-size: 14px;
  transition: all 0.2s;
  gap: 12px;
  cursor: pointer;
  user-select: none;
}

.nav-group-header:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-sidebar-text-hover);
}

.nav-group-header.active {
  background: var(--color-sidebar-active-bg);
  color: var(--color-sidebar-text-hover);
  border-right: 3px solid var(--color-sidebar-active-border);
}

.nav-group-header .nav-icon {
  width: 20px;
  text-align: center;
  font-size: 16px;
}

.nav-arrow {
  margin-left: auto;
  font-size: 12px;
  transition: transform 0.2s;
}

.nav-group.open > .nav-group-header .nav-arrow {
  transform: rotate(90deg);
}

/* 分组菜单 - 默认展开，所有子菜单始终可见 */
.nav-group-children {
  overflow: hidden;
  transition: max-height 0.3s ease;
  background: rgba(0, 0, 0, 0.15);
  max-height: 2000px;
}

.nav-group.collapsed > .nav-group-children {
  max-height: 0;
}

.nav-sub-item {
  display: flex;
  align-items: center;
  padding: 10px 20px 10px 52px;
  color: var(--color-sidebar-text);
  font-size: 13px;
  transition: all 0.2s;
  gap: 12px;
}

.nav-sub-item:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-sidebar-text-hover);
}

.nav-sub-item.active {
  background: var(--color-sidebar-active-bg);
  color: var(--color-sidebar-text-hover);
  border-right: 3px solid var(--color-sidebar-active-border);
}

.nav-sub-item .nav-icon {
  width: 20px;
  text-align: center;
  font-size: 14px;
}

/* 子分组菜单（二级嵌套分组，如"用户管理 > 操作"） */
.nav-sub-group {
  margin-bottom: 1px;
}

.nav-sub-group-header {
  display: flex;
  align-items: center;
  padding: 9px 20px 9px 52px;
  color: var(--color-sidebar-text);
  font-size: 13px;
  transition: all 0.2s;
  gap: 10px;
  cursor: pointer;
  user-select: none;
}

.nav-sub-group-header:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-sidebar-text-hover);
}

.nav-sub-group-header.active {
  background: var(--color-sidebar-active-bg);
  color: var(--color-sidebar-text-hover);
  border-right: 3px solid var(--color-sidebar-active-border);
}

.nav-sub-group-header .nav-icon {
  width: 18px;
  text-align: center;
  font-size: 14px;
}

.nav-sub-group .nav-arrow {
  margin-left: auto;
  font-size: 11px;
  transition: transform 0.2s;
}

.nav-sub-group.open > .nav-sub-group-header .nav-arrow {
  transform: rotate(90deg);
}

/* 子分组菜单 - 默认展开 */
.nav-sub-group-children {
  overflow: hidden;
  transition: max-height 0.3s ease;
  background: rgba(0, 0, 0, 0.1);
  max-height: 1000px;
}

.nav-sub-group.collapsed > .nav-sub-group-children {
  max-height: 0;
}

/* 三级菜单项（如"操作 > 审核"） */
.nav-sub-sub-item {
  display: flex;
  align-items: center;
  padding: 8px 20px 8px 68px;
  color: var(--color-sidebar-text);
  font-size: 13px;
  transition: all 0.2s;
  gap: 10px;
}

.nav-sub-sub-item:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-sidebar-text-hover);
}

.nav-sub-sub-item.active {
  background: var(--color-sidebar-active-bg);
  color: var(--color-sidebar-text-hover);
  border-right: 3px solid var(--color-sidebar-active-border);
}

.nav-sub-sub-item .nav-icon {
  width: 18px;
  text-align: center;
  font-size: 13px;
}

.sidebar-footer {
  padding: 12px 0;
  border-top: 1px solid var(--color-sidebar-border);
}

.sidebar-footer a {
  display: flex;
  align-items: center;
  padding: 12px 20px;
  color: rgba(255, 255, 255, 0.5);
  font-size: 14px;
  transition: all 0.2s;
  gap: 12px;
}

.sidebar-footer a:hover {
  background: var(--color-sidebar-footer-hover-bg);
  color: var(--color-sidebar-footer-hover-text);
}

.main-content {
  margin-left: 240px;
  flex: 1;
  min-height: 100vh;
}

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

/* Tabs */
.tabs {
  display: flex;
  background: var(--color-card);
  border-bottom: 1px solid var(--color-border);
  padding: 0 32px;
}

.tab {
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
}

.tab:hover {
  color: var(--color-text);
}

.tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.tab-content {
  padding: 24px 32px;
}

/* Text utilities */
.text-muted {
  color: var(--color-text-muted);
  font-size: 13px;
  padding: 0 24px 12px;
}

.text-danger {
  color: var(--color-danger);
}

/* Form actions */
.form-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

/* Toggle switch */
.switch {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 24px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-border);
  transition: 0.3s;
  border-radius: 24px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: #fff;
  transition: 0.3s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--color-success);
}

input:checked + .slider:before {
  transform: translateX(24px);
}

/* Code inline */
code {
  background: var(--color-hover);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: "Courier New", Courier, monospace;
  font-size: 13px;
}

.page-header {
  background: var(--color-card);
  padding: 20px 32px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.page-header h1 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-heading);
}

.page-body {
  padding: 24px 32px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--color-card);
  border-radius: 12px;
  padding: 24px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
}

.stat-card .stat-label {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.stat-card .stat-value {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-heading);
}

.stat-card .stat-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 12px;
}

.stat-card.indigo .stat-icon {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.stat-card.green .stat-icon {
  background: var(--color-badge-success-bg);
  color: var(--color-success);
}

.stat-card.amber .stat-icon {
  background: var(--color-badge-pending-bg);
  color: var(--color-warning);
}

.stat-card.red .stat-icon {
  background: var(--color-badge-failed-bg);
  color: var(--color-danger);
}

.card {
  background: var(--color-card);
  border-radius: 12px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
}

.card-header {
  padding: 16px 24px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-header h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-heading);
}

.card-body {
  padding: 0;
}

.table-wrapper {
  overflow-x: auto;
}

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

table th {
  padding: 12px 16px;
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--color-table-header);
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

table td {
  padding: 12px 16px;
  font-size: 14px;
  border-bottom: 1px solid var(--color-border-light);
  white-space: nowrap;
}

/* 操作列允许换行，避免按钮溢出 */
table td .action-group {
  white-space: normal;
}

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

.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 600;
}

.badge-pending {
  background: var(--color-badge-pending-bg);
  color: var(--color-badge-pending-text);
}

.badge-success {
  background: var(--color-badge-success-bg);
  color: var(--color-badge-success-text);
}

.badge-failed {
  background: var(--color-badge-failed-bg);
  color: var(--color-badge-failed-text);
}

.badge-rejected {
  background: var(--color-badge-rejected-bg);
  color: var(--color-badge-rejected-text);
}

.badge-processing {
  background: var(--color-badge-processing-bg);
  color: var(--color-badge-processing-text);
}

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 16px 24px;
}

.pagination button {
  min-width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  background: var(--color-card);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-input-border);
  transition: all 0.2s;
}

.pagination button:hover:not(:disabled) {
  background: var(--color-hover);
  border-color: var(--color-text-muted);
}

.pagination button.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.pagination button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s;
}

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

.modal {
  background: var(--color-card);
  border-radius: 16px;
  width: 480px;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-modal);
  transform: scale(0.95);
  transition: transform 0.2s;
}

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

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-heading);
}

.modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: none;
  font-size: 18px;
  color: var(--color-text-muted);
  transition: all 0.2s;
}

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

.modal-body {
  padding: 24px;
  overflow-y: auto;
  flex: 1;
  min-height: 0;
}

.modal-body p {
  font-size: 14px;
  color: var(--color-text-body);
  line-height: 1.6;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 12px 20px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  box-shadow: var(--shadow-toast);
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 280px;
  animation: toastIn 0.3s ease;
}

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

.toast.toast-error {
  background: var(--color-danger);
  color: #fff;
}

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

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

.toast.removing {
  animation: toastOut 0.3s ease forwards;
}

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

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

.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-loading-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s;
}

.loading-overlay.show {
  opacity: 1;
  visibility: visible;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--color-spinner-track);
  border-top-color: var(--color-spinner-fill);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.filter-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--color-border);
}

.filter-bar .filter-btn {
  padding: 6px 16px;
  border-radius: 9999px;
  font-size: 13px;
  font-weight: 500;
  background: var(--color-hover);
  color: var(--color-text-body);
  border: 1px solid transparent;
  transition: all 0.2s;
}

.filter-bar .filter-btn:hover {
  background: var(--color-border);
}

.filter-bar .filter-btn.active {
  background: var(--color-primary);
  color: #fff;
}

.action-group {
  display: flex;
  gap: 6px;
}

.config-item {
  display: flex;
  align-items: center;
  padding: 16px 24px;
  border-bottom: 1px solid var(--color-border-light);
  gap: 16px;
}

.config-item:last-child {
  border-bottom: none;
}

.config-key {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-heading);
  min-width: 180px;
}

.config-desc {
  font-size: 13px;
  color: var(--color-text-muted);
  min-width: 200px;
  flex: 1;
}

.config-value {
  font-size: 14px;
  color: var(--color-text-secondary);
  padding: 6px 12px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  min-width: 200px;
  transition: border-color 0.2s;
  background: var(--color-card);
}

.config-value:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-ring);
}

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

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

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

/* Theme settings panel */
.theme-panel {
  position: fixed;
  top: 0;
  right: -320px;
  width: 320px;
  height: 100vh;
  background: var(--color-card);
  border-left: 1px solid var(--color-border);
  box-shadow: var(--shadow-modal);
  z-index: 200;
  transition: right 0.3s ease;
  display: flex;
  flex-direction: column;
}

.theme-panel.open {
  right: 0;
}

.theme-panel-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.theme-panel-header h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-heading);
}

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

.theme-section {
  margin-bottom: 28px;
}

.theme-section-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.theme-mode-toggle {
  display: flex;
  gap: 8px;
}

.theme-mode-btn {
  flex: 1;
  padding: 10px 16px;
  border-radius: 8px;
  border: 2px solid var(--color-border);
  background: var(--color-card);
  color: var(--color-text);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.theme-mode-btn:hover {
  border-color: var(--color-primary);
}

.theme-mode-btn.active {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.theme-color-picker {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.theme-color-picker label {
  font-size: 14px;
  color: var(--color-text);
  min-width: 80px;
}

.theme-color-picker input[type="color"] {
  width: 40px;
  height: 32px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 2px;
  cursor: pointer;
  background: var(--color-card);
}

.theme-color-swatches {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.theme-swatch {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s;
}

.theme-swatch:hover {
  transform: scale(1.15);
}

.theme-swatch.active {
  border-color: var(--color-text);
  box-shadow: 0 0 0 2px var(--color-card), 0 0 0 4px var(--color-text);
}

.theme-panel-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--color-border);
}

.theme-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-overlay);
  z-index: 199;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
}

.theme-overlay.open {
  opacity: 1;
  visibility: visible;
}

@media (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .sidebar {
    width: 60px;
  }

  .sidebar-header h2,
  .sidebar-header p,
  .sidebar-nav a span:not(.nav-icon),
  .sidebar-nav .nav-group-header span:not(.nav-icon),
  .sidebar-nav .nav-sub-group-header span:not(.nav-icon),
  .sidebar-footer a span:not(.nav-icon) {
    display: none;
  }

  .sidebar-nav a,
  .sidebar-nav .nav-group-header,
  .sidebar-nav .nav-sub-group-header,
  .sidebar-footer a {
    justify-content: center;
    padding: 12px;
  }

  /* 小屏幕下隐藏子分组箭头和嵌套子菜单 */
  .sidebar-nav .nav-arrow,
  .sidebar-nav .nav-group-children,
  .sidebar-nav .nav-sub-group-children {
    display: none;
  }

  .main-content {
    margin-left: 60px;
  }

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

  .page-body {
    padding: 16px;
  }
}