/* Layout */
.app-layout {
  display: flex;
  min-height: 100vh;
  min-height: 100dvh;
  background-color: var(--color-bg-primary);
}

.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  transition: margin-left var(--duration-normal) var(--ease-default);
}

.sidebar-is-collapsed .main-content {
  margin-left: var(--sidebar-width-collapsed);
}

.main-content-inner {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.app-layout-chat {
  height: 100vh;
  height: 100dvh;
}

.app-layout-chat .main-content {
  height: 100vh;
  height: 100dvh;
  min-height: 0;
  min-width: 0;
  overflow: hidden;
}

.app-layout-chat .main-content-inner {
  overflow: hidden;
  min-width: 0;
}

/* Footer */
.app-footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border-subtle);
  padding: var(--spacing-md) var(--spacing-lg);
  margin-top: auto;
}

.app-footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
}

.app-footer-version {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

.app-footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-md);
}

.app-footer-links a {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 150ms;
}

.app-footer-links a:hover {
  color: var(--color-primary);
}

.app-footer-copyright {
  font-size: 0.6875rem;
  color: var(--color-text-muted);
}

.app-footer-copyright a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 150ms;
}

.app-footer-copyright a:hover {
  color: var(--color-primary);
}

/* Mobile header */
.mobile-header {
  display: none;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border-subtle);
}

.hamburger-btn {
  background: none;
  border: none;
  color: var(--color-text-primary);
  font-size: 1.25rem;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.mobile-title {
  font-weight: 600;
  color: var(--color-text-primary);
}

/* Sidebar */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  height: 100dvh;
  background: var(--color-bg-primary);
  border-right: 1px solid var(--color-border-subtle);
  display: flex;
  flex-direction: column;
  z-index: 50;
  overflow-y: auto;
  box-shadow: var(--shadow-sidebar);
  transition: width var(--duration-normal) var(--ease-default),
              transform var(--duration-normal) var(--ease-default);
  will-change: transform;
}

.sidebar-overlay {
  display: none;
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--spacing-sm);
  border-bottom: 1px solid var(--color-border-subtle);
  min-height: 44px;
}

.sidebar-logo-link {
  display: block;
}

.sidebar-logo-img {
  width: 100%;
  max-width: 120px;
  height: auto;
  padding: 0 var(--spacing-xs);
}

.sidebar-logo-icon {
  display: none;
}

.sidebar-logo-icon-img {
  width: 28px;
  height: 28px;
}

.sidebar-close-btn {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-secondary);
  font-size: 1.25rem;
  cursor: pointer;
}

.sidebar-nav {
  flex: 1;
  padding: 2px 0;
  overflow-y: auto;
}

.sidebar-section {
  padding: 2px 0;
}

.sidebar-section-title {
  padding: var(--spacing-xs) var(--spacing-sm) 2px;
  font-size: 0.625rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  white-space: nowrap;
  overflow: hidden;
}

.sidebar-section-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  transition: color var(--duration-fast);
}

.sidebar-section-toggle:hover {
  color: var(--color-text-secondary);
}

.sidebar-section-chevron {
  font-size: 0.5rem;
  transition: transform var(--duration-fast);
  flex-shrink: 0;
}

.sidebar-section-toggle.open .sidebar-section-chevron {
  transform: rotate(90deg);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: 6px var(--spacing-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.8125rem;
  transition: all var(--duration-fast) var(--ease-default);
  border-left: 3px solid transparent;
  white-space: nowrap;
  overflow: hidden;
}

.nav-item:hover {
  color: var(--color-text-primary);
  background: var(--color-primary-light);
}

.nav-item.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
  border-left-color: var(--color-primary);
  font-weight: 500;
}

.nav-icon {
  width: 18px;
  text-align: center;
  flex-shrink: 0;
  font-size: 0.85rem;
}

.nav-label {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: opacity 150ms ease;
}

.nav-external {
  font-size: 0.55rem;
  margin-left: auto;
  opacity: 0.5;
  flex-shrink: 0;
}

.sidebar-footer {
  padding: var(--spacing-xs) var(--spacing-sm);
  border-top: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  width: 100%;
  padding: var(--spacing-xs) 0;
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  overflow: hidden;
}

.sidebar-user-avatar {
  width: 20px;
  height: 20px;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

.sidebar-user-avatar-icon {
  font-size: 1.25rem;
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.sidebar-user-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  flex: 1;
  min-width: 0;
  background: none;
  border: none;
  padding: 2px var(--spacing-xs);
  margin: -2px calc(-1 * var(--spacing-xs));
  border-radius: var(--radius-sm);
  color: inherit;
  font: inherit;
  cursor: pointer;
  transition: background var(--duration-fast), color var(--duration-fast);
}

.sidebar-user-link:hover {
  background: var(--color-bg-hover);
  color: var(--color-text-primary);
}

.sidebar-user-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-align: left;
}

.sidebar-logout-btn {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 2px 4px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  flex-shrink: 0;
  transition: color var(--duration-fast);
}

.sidebar-logout-btn:hover {
  color: var(--color-error);
}

.sidebar.collapsed .sidebar-user {
  justify-content: center;
}

.sidebar.collapsed .sidebar-user-link {
  flex: 0;
  margin: 0;
  padding: 2px;
}

.sidebar.collapsed .sidebar-user-name,
.sidebar.collapsed .sidebar-logout-btn {
  display: none;
}

.sidebar-collapse-btn {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  transition: color var(--duration-fast);
  flex-shrink: 0;
}

.sidebar-collapse-btn:hover {
  color: var(--color-text-primary);
}

/* Collapsed sidebar (desktop only) */
.sidebar.collapsed {
  width: var(--sidebar-width-collapsed);
}

.sidebar.collapsed .sidebar-logo-link {
  display: none;
}

.sidebar.collapsed .sidebar-logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

.sidebar.collapsed .sidebar-header {
  justify-content: center;
}

.sidebar.collapsed .nav-label,
.sidebar.collapsed .nav-external,
.sidebar.collapsed .sidebar-section-title {
  display: none;
}

.sidebar.collapsed .sidebar-section-chevron {
  display: none;
}

.sidebar.collapsed .nav-item {
  justify-content: center;
  padding: 8px 0;
  border-left-width: 2px;
}

.sidebar.collapsed .nav-icon {
  width: auto;
  font-size: 1rem;
}

.sidebar.collapsed .sidebar-footer {
  justify-content: center;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.sidebar.collapsed .theme-toggle {
  padding: 4px;
  font-size: 0.75rem;
}

.sidebar.collapsed .theme-toggle .nav-label {
  display: none;
}

/* Theme toggle */
.theme-toggle {
  background: none;
  border: 1px solid var(--color-border-subtle);
  color: var(--color-text-secondary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 0.875rem;
  transition: all var(--duration-fast) var(--ease-default);
}
.theme-toggle:hover {
  color: var(--color-primary);
  border-color: var(--color-primary-border);
}

/* Operations bar */
.operations-bar {
  background: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border-subtle);
  padding: var(--spacing-xs) var(--spacing-md);
}

.operation-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-xs) 0;
}

.operation-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex: 1;
  min-width: 0;
}

.operation-spinner {
  width: 14px;
  height: 14px;
  border: 2px solid var(--color-border-subtle);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.operation-text {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
}

.operation-progress {
  font-size: 0.75rem;
  color: var(--color-primary);
  font-weight: 500;
}

.operation-bar-container {
  flex: 1;
  height: 3px;
  background: var(--color-bg-tertiary);
  border-radius: 2px;
  overflow: hidden;
}

.operation-bar {
  height: 100%;
  background: var(--color-primary);
  border-radius: 2px;
  transition: width 300ms ease;
}

.operation-cancel {
  flex-shrink: 0;
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 4px 6px;
  font-size: 0.875rem;
}
.operation-cancel:hover {
  color: var(--color-error);
}

/* Toast */
.toast-container {
  position: fixed;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  z-index: 1100;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  font-size: 0.875rem;
  animation: slideIn 200ms ease-out;
  min-width: 280px;
}

.toast-enter {
  opacity: 0;
  transform: translateX(20px);
}

.toast-exit {
  opacity: 0;
  transform: translateX(20px);
  transition: opacity 150ms ease, transform 150ms ease;
}

.toast-success {
  background: var(--color-success-light);
  border: 1px solid var(--color-success-border);
  color: var(--color-success);
}
.toast-error {
  background: var(--color-error-light);
  border: 1px solid var(--color-error-border);
  color: var(--color-error);
}
.toast-warning {
  background: var(--color-warning-light);
  border: 1px solid var(--color-warning-border);
  color: var(--color-warning);
}
.toast-info {
  background: var(--color-info-light);
  border: 1px solid var(--color-info-border);
  color: var(--color-info);
}

.toast-close {
  margin-left: auto;
  background: none;
  border: none;
  color: inherit;
  opacity: 0.6;
  cursor: pointer;
  padding: 2px;
}
.toast-close:hover { opacity: 1; }
.toast-link {
  font-size: 0.75rem;
  color: inherit;
  opacity: 0.8;
  text-decoration: underline;
  white-space: nowrap;
  margin-left: var(--spacing-xs);
}
.toast-link:hover { opacity: 1; }

/* Chat error trace link */
.chat-error-trace-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  text-decoration: none;
  margin-top: var(--spacing-xs);
}
.chat-error-trace-link:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

/* Spinner */
.spinner {
  display: flex;
  align-items: center;
  justify-content: center;
}
.spinner-ring {
  border: 3px solid var(--color-border-subtle);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
.spinner-sm .spinner-ring { width: 16px; height: 16px; }
.spinner-md .spinner-ring { width: 24px; height: 24px; }
.spinner-lg .spinner-ring { width: 40px; height: 40px; }

/* Model selector */
.model-selector {
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.875rem;
  font-family: inherit;
  outline: none;
  cursor: pointer;
  transition: border-color var(--duration-fast);
  min-width: 180px;
}
.model-selector:focus {
  border-color: var(--color-border-strong);
}

/* Resource monitor */
.resource-monitor {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
}

.resource-monitor-title {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
}

.resource-gpu-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.resource-gpu-card {
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
}

.resource-gpu-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xs);
}

.resource-gpu-name {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-primary);
}

.resource-gpu-vendor {
  font-size: 0.6875rem;
  padding: 2px 6px;
  background: var(--color-accent-light);
  color: var(--color-accent);
  border-radius: var(--radius-sm);
}

.resource-gpu-stats {
  display: flex;
  gap: var(--spacing-md);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: var(--spacing-xs);
}

.resource-bar-container {
  height: 4px;
  background: var(--color-bg-primary);
  border-radius: 2px;
  overflow: hidden;
}

.resource-bar {
  height: 100%;
  background: var(--color-primary);
  border-radius: 2px;
  transition: width 500ms ease;
}

.resource-bar-ram {
  background: var(--color-secondary);
}

.resource-no-gpu {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  padding: var(--spacing-sm);
}

.resource-ram {
  margin-top: var(--spacing-sm);
}

.resource-ram-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
}

.resource-monitor-compact {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.resource-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* Common page styles */
.page {
  padding: var(--spacing-xl);
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  animation: fadeIn var(--duration-normal) var(--ease-default);
}

.page-header {
  margin-bottom: var(--spacing-xl);
}

.page-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.page-subtitle {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

/* Cards */
.card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  transition: border-color var(--duration-fast), box-shadow var(--duration-fast), transform var(--duration-fast);
}

.card:hover {
  border-color: var(--color-border-default);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-md);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-family: inherit;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: background var(--duration-fast) var(--ease-default), color var(--duration-fast) var(--ease-default), border-color var(--duration-fast) var(--ease-default), box-shadow var(--duration-fast) var(--ease-default);
  text-decoration: none;
}

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

.btn-secondary {
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-default);
}
.btn-secondary:hover {
  border-color: var(--color-border-strong);
  background: var(--color-primary-light);
}

.btn-danger {
  background: var(--color-error-light);
  color: var(--color-error);
  border: 1px solid rgba(239, 68, 68, 0.2);
}
.btn-danger:hover {
  background: rgba(239, 68, 68, 0.2);
}

.btn-sm {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.8125rem;
}

.btn:active:not(:disabled) {
  transform: translateY(1px);
}

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

/* Inputs */
.input {
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
  font-size: 0.875rem;
  font-family: inherit;
  outline: none;
  width: 100%;
  transition: border-color var(--duration-fast);
}
.input:focus {
  border-color: var(--color-border-strong);
  box-shadow: 0 0 0 2px var(--color-primary-light);
}

.textarea {
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
  font-size: 0.875rem;
  font-family: inherit;
  outline: none;
  width: 100%;
  resize: vertical;
  min-height: 80px;
  transition: border-color var(--duration-fast);
}
.textarea:focus {
  border-color: var(--color-border-strong);
  box-shadow: 0 0 0 2px var(--color-primary-light);
}

/* Code editor (syntax-highlighted textarea overlay) */
.code-editor-highlight .hljs {
  background: transparent;
  padding: 0;
}
.code-editor-wrapper textarea:focus {
  border-color: var(--color-border-strong);
}

/* highlight.js YAML syntax colours – dark theme */
[data-theme="dark"] .hljs-attr { color: #7dd3fc; }
[data-theme="dark"] .hljs-string { color: #6ee7b7; }
[data-theme="dark"] .hljs-number { color: #fcd34d; }
[data-theme="dark"] .hljs-literal { color: #f9a8d4; }
[data-theme="dark"] .hljs-keyword { color: #c4b5fd; }
[data-theme="dark"] .hljs-comment { color: #64748b; font-style: italic; }
[data-theme="dark"] .hljs-meta { color: #94a3b8; }
[data-theme="dark"] .hljs-bullet { color: #38bdf8; }
[data-theme="dark"] .hljs-section { color: #a78bfa; font-weight: 600; }
[data-theme="dark"] .hljs-type { color: #f472b6; }

/* highlight.js YAML syntax colours – light theme */
[data-theme="light"] .hljs-attr { color: #0369a1; }
[data-theme="light"] .hljs-string { color: #15803d; }
[data-theme="light"] .hljs-number { color: #b45309; }
[data-theme="light"] .hljs-literal { color: #be185d; }
[data-theme="light"] .hljs-keyword { color: #7c3aed; }
[data-theme="light"] .hljs-comment { color: #94a3b8; font-style: italic; }
[data-theme="light"] .hljs-meta { color: #64748b; }
[data-theme="light"] .hljs-bullet { color: #0284c7; }
[data-theme="light"] .hljs-section { color: #6d28d9; font-weight: 600; }
[data-theme="light"] .hljs-type { color: #db2777; }

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

.form-label {
  display: block;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: 0.6875rem;
  font-weight: 500;
}

.badge-success {
  background: var(--color-success-light);
  color: var(--color-success);
}
.badge-error {
  background: var(--color-error-light);
  color: var(--color-error);
}
.badge-info {
  background: var(--color-info-light);
  color: var(--color-info);
}
.badge-warning {
  background: var(--color-warning-light);
  color: var(--color-warning);
}

/* Tabs */
.tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--color-border-subtle);
  margin-bottom: var(--spacing-md);
}

.tab {
  padding: var(--spacing-sm) var(--spacing-md);
  background: none;
  border: none;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  font-family: inherit;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all var(--duration-fast);
}

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

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

/* Tables */
.table-container {
  overflow-x: auto;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.table th {
  text-align: left;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: 0.8125rem;
  border-bottom: 1px solid var(--color-border-subtle);
}

.table td {
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid var(--color-border-divider);
  color: var(--color-text-primary);
  transition: background var(--duration-fast) var(--ease-default);
}

.table tr:last-child td {
  border-bottom: none;
}

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

/* Toggle switch */
.toggle {
  position: relative;
  display: inline-block;
  width: 36px;
  height: 20px;
}

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

.toggle-slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background: var(--color-toggle-off, #CBD5E1);
  border-radius: var(--radius-full);
  transition: background var(--duration-fast);
}

.toggle-slider::before {
  content: '';
  position: absolute;
  height: 14px;
  width: 14px;
  left: 2px;
  bottom: 2px;
  background: white;
  border-radius: 50%;
  transition: transform var(--duration-fast);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.toggle input:checked + .toggle-slider {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.toggle input:checked + .toggle-slider::before {
  transform: translateX(16px);
  background: white;
}

/* Model checkbox list */
.model-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  max-height: 200px;
  overflow: auto;
  padding: var(--spacing-xs);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
}

.model-list::-webkit-scrollbar {
  width: 6px;
}

.model-list::-webkit-scrollbar-track {
  background: transparent;
}

.model-list::-webkit-scrollbar-thumb {
  background: var(--color-border-default);
  border-radius: var(--radius-full);
}

.model-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: 6px var(--spacing-sm);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background var(--duration-fast) var(--ease-default);
  user-select: none;
}

.model-item:hover {
  background: var(--color-primary-light);
}

.model-item.model-item-checked {
  background: var(--color-primary-light);
}

.model-item input[type="checkbox"] {
  display: none;
}

.model-item-check {
  width: 18px;
  height: 18px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--color-border-default);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--duration-fast) var(--ease-default);
  background: transparent;
}

.model-item:hover .model-item-check {
  border-color: var(--color-primary);
}

.model-item-checked .model-item-check {
  background: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary-light);
}

.model-item-checked .model-item-check i {
  color: white;
  font-size: 10px;
  animation: checkPop var(--duration-fast) var(--ease-default);
}

@keyframes checkPop {
  0% { transform: scale(0); }
  60% { transform: scale(1.2); }
  100% { transform: scale(1); }
}

.model-item-name {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: var(--color-text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.model-item-checked .model-item-name {
  color: var(--color-primary);
}

/* Collapsible */
.collapsible-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  cursor: pointer;
  color: var(--color-text-secondary);
  font-size: 0.8125rem;
  font-weight: 500;
  user-select: none;
}

.collapsible-header i {
  transition: transform var(--duration-fast);
}

.collapsible-header.open i {
  transform: rotate(90deg);
}

/* Search bar */
.search-bar {
  position: relative;
}

.search-bar .search-icon {
  position: absolute;
  left: var(--spacing-sm);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.search-bar .input {
  padding-left: 2rem;
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-lg);
}

.pagination-btn {
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 0.8125rem;
  transition: all var(--duration-fast);
}

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

.pagination-btn.active {
  background: var(--color-primary);
  color: var(--color-primary-text);
  border-color: var(--color-primary);
}

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

/* Filter buttons */
.filter-bar {
  display: flex;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
  margin-bottom: var(--spacing-md);
}

.filter-btn {
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-full);
  cursor: pointer;
  font-size: 0.75rem;
  font-family: inherit;
  transition: all var(--duration-fast);
}

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

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

/* Login page */
.login-page {
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--color-bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
}

.login-card {
  width: 100%;
  max-width: 400px;
  padding: var(--spacing-xl);
}

.login-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.login-logo {
  width: 56px;
  height: 56px;
  margin-bottom: var(--spacing-md);
}

.login-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-primary);
}

.login-subtitle {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

.login-alert {
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  margin-bottom: var(--spacing-md);
}

.login-alert-error {
  background: var(--color-error-light);
  color: var(--color-error);
  border: 1px solid var(--color-error-border);
}

.login-alert-success {
  background: var(--color-success-light);
  color: var(--color-success);
  border: 1px solid var(--color-success-border);
}

.login-divider {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin: var(--spacing-lg) 0;
  color: var(--color-text-muted);
  font-size: 0.8125rem;
}

.login-divider::before,
.login-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border-subtle);
}

.login-footer {
  text-align: center;
  margin-top: var(--spacing-md);
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

.login-link {
  background: none;
  border: none;
  color: var(--color-primary);
  cursor: pointer;
  padding: 0;
  font: inherit;
}

.login-link:hover {
  color: var(--color-primary-hover);
}

.login-token-toggle {
  margin-top: var(--spacing-lg);
  text-align: center;
}

.login-token-toggle > button {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 0.75rem;
  padding: 0;
  font: inherit;
  font-size: 0.75rem;
}

.login-token-toggle > button:hover {
  color: var(--color-text-secondary);
}

.login-token-form {
  margin-top: var(--spacing-sm);
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: var(--spacing-3xl, 4rem) var(--spacing-xl);
  animation: fadeIn var(--duration-normal) var(--ease-default);
}

.empty-state-icon {
  font-size: 3rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
}

.empty-state-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.empty-state-text {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-lg);
}

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

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

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

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes messageSlideIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes dropdownIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes completionGlow {
  0% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.2); }
  50% { box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1); }
  100% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0); }
}

/* Page route transitions */
.page-transition {
  animation: fadeIn 200ms ease;
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  min-width: 0;
}

/* Completion glow on streaming finish */
.chat-message-new .chat-message-content {
  animation: completionGlow 600ms ease-out;
}

/* Chat-specific styles */
.chat-layout {
  display: flex;
  flex: 1;
  min-height: 0;
  min-width: 0;
  overflow: hidden;
  position: relative;
}

.chat-sidebar {
  width: 260px;
  background: var(--color-bg-secondary);
  border-right: 1px solid var(--color-border-subtle);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  flex-shrink: 0;
  transition: width 200ms ease, opacity 150ms ease;
}
.chat-sidebar.hidden {
  width: 0;
  border-right: none;
  opacity: 0;
  pointer-events: none;
}

.chat-sidebar-header {
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid var(--color-border-subtle);
  display: flex;
  gap: var(--spacing-xs);
  align-items: center;
}

.chat-list {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-xs);
  scrollbar-width: thin;
  scrollbar-color: var(--color-border-subtle) transparent;
}
.chat-list::-webkit-scrollbar { width: 4px; }
.chat-list::-webkit-scrollbar-track { background: transparent; }
.chat-list::-webkit-scrollbar-thumb {
  background: var(--color-border-subtle);
  border-radius: 2px;
}

.chat-list-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  transition: background var(--duration-fast), color var(--duration-fast), transform var(--duration-fast);
  margin-bottom: 2px;
}

.chat-list-item:hover {
  background: var(--color-primary-light);
  transform: translateX(2px);
}

.chat-list-item.active {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.chat-list-item-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.chat-list-item-top {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.chat-list-item-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 500;
  font-size: 0.8125rem;
}

.chat-list-item-time {
  font-size: 0.625rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}

.chat-list-item-preview {
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  line-height: 1.3;
}

.chat-list-item-delete {
  opacity: 0;
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 2px;
  font-size: 0.75rem;
}

.chat-list-item:hover .chat-list-item-delete {
  opacity: 1;
}

.chat-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  position: relative;
  overflow: hidden;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--spacing-lg) var(--spacing-xl);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  scrollbar-width: thin;
  scrollbar-color: var(--color-border-subtle) transparent;
}
.chat-messages::-webkit-scrollbar { width: 6px; }
.chat-messages::-webkit-scrollbar-track { background: transparent; }
.chat-messages::-webkit-scrollbar-thumb {
  background: var(--color-border-subtle);
  border-radius: 3px;
}
.chat-messages::-webkit-scrollbar-thumb:hover {
  background: var(--color-border-default);
}

.chat-message {
  display: flex;
  gap: var(--spacing-sm);
  max-width: 80%;
  min-width: 0;
  animation: messageSlideIn 250ms ease-out;
}

.chat-message-user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.chat-message-assistant {
  align-self: flex-start;
}

.chat-message-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  flex-shrink: 0;
}

.chat-message-user .chat-message-avatar {
  background: var(--color-primary);
  color: white;
}

.chat-message-assistant .chat-message-avatar {
  background: var(--color-accent-light);
  color: var(--color-accent);
}

.chat-message-bubble {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.chat-message-model {
  font-size: 0.625rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding-left: 2px;
}

.chat-message-content {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: 4px 16px 16px 16px;
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: 0.875rem;
  line-height: 1.6;
  word-break: break-word;
}

.chat-message-user .chat-message-content {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
  border-radius: 16px 4px 16px 16px;
}

.chat-message-content pre {
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
  overflow-x: auto;
  margin: var(--spacing-sm) 0;
  font-size: 0.8125rem;
}

.chat-message-user .chat-message-content pre {
  background: rgba(0, 0, 0, 0.15);
  border-color: rgba(255, 255, 255, 0.1);
}

.chat-message-content code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8125rem;
}

.chat-message-content p {
  margin: var(--spacing-xs) 0;
}

.chat-message-content p:first-child {
  margin-top: 0;
}

.chat-message-content p:last-child {
  margin-bottom: 0;
}

/* Message action buttons */
.chat-message-actions {
  display: flex;
  gap: 2px;
  opacity: 0;
  transition: opacity 150ms;
  padding-left: 2px;
}
.chat-message:hover .chat-message-actions {
  opacity: 1;
}
.chat-message-actions button {
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-subtle);
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 3px 6px;
  font-size: 0.6875rem;
  border-radius: var(--radius-sm);
  transition: all 150ms;
}
.chat-message-actions button:hover {
  color: var(--color-primary);
  border-color: var(--color-primary-border);
  background: var(--color-primary-light);
}

.chat-message-system {
  align-self: center;
  max-width: 90%;
}
.chat-message-system .chat-message-bubble {
  color: var(--color-text-muted);
  background: transparent;
  border: none;
  font-size: 0.7rem;
  letter-spacing: 0.01em;
  padding: 2px 0;
}
.chat-message-system .chat-message-content {
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 2px var(--spacing-sm);
  font-size: 0.7rem;
  line-height: 1.4;
  color: var(--color-text-muted);
}
.chat-message-timestamp {
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}

.chat-input-area {
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border-subtle);
}

.chat-input-wrapper {
  display: flex;
  gap: var(--spacing-sm);
  align-items: flex-end;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xs);
  transition: border-color var(--duration-fast), box-shadow var(--duration-fast);
}
.chat-input-wrapper:focus-within {
  border-color: var(--color-primary-border);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12), 0 0 12px rgba(59, 130, 246, 0.06);
}

.chat-attach-btn {
  flex-shrink: 0;
  border: none !important;
  background: transparent !important;
  color: var(--color-text-muted) !important;
  padding: var(--spacing-xs) !important;
}
.chat-attach-btn:hover {
  color: var(--color-primary) !important;
}

.chat-input {
  flex: 1;
  background: transparent;
  color: var(--color-text-primary);
  border: none;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.875rem;
  font-family: inherit;
  outline: none;
  resize: none;
  min-height: 36px;
  max-height: 200px;
  line-height: 1.5;
  overflow-y: auto;
}

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

.chat-send-btn {
  padding: var(--spacing-xs);
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  transition: background var(--duration-fast);
}

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

.chat-send-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}
.chat-send-btn:active:not(:disabled) {
  transform: scale(0.92);
}

.chat-stop-btn {
  padding: var(--spacing-xs);
  background: var(--color-error);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  transition: background var(--duration-fast);
}
.chat-stop-btn:hover {
  background: var(--color-error-hover, #dc2626);
}

.chat-token-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-xs) var(--spacing-lg);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.chat-streaming-cursor::after {
  content: '';
  display: inline-block;
  width: 6px;
  height: 14px;
  background: var(--color-primary);
  margin-left: 2px;
  animation: pulse 1s infinite;
  vertical-align: text-bottom;
}

/* Inline streaming speed indicator */
.chat-streaming-speed {
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  padding-top: var(--spacing-xs);
  font-family: 'JetBrains Mono', monospace;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Thinking dots animation */
.chat-thinking-indicator {
  display: flex;
  align-items: center;
  min-height: 24px;
}
.chat-thinking-dots {
  display: inline-flex;
  gap: 4px;
  align-items: center;
}
.chat-thinking-dots span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-text-muted);
  animation: thinkingBounce 1.4s infinite ease-in-out both;
}
.chat-thinking-dots span:nth-child(1) { animation-delay: -0.32s; }
.chat-thinking-dots span:nth-child(2) { animation-delay: -0.16s; }
.chat-thinking-dots span:nth-child(3) { animation-delay: 0s; }
@keyframes thinkingBounce {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
  40% { transform: scale(1); opacity: 1; }
}

/* Message completion flash */
.chat-message-bubble {
  transition: border-color 300ms ease;
}

/* Chat empty state */
.chat-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  padding: var(--spacing-xl);
  text-align: center;
  min-height: 300px;
}
.chat-empty-icon {
  font-size: 3rem;
  color: var(--color-border-default);
  margin-bottom: var(--spacing-lg);
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-bg-tertiary);
}
.chat-empty-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0 0 var(--spacing-xs);
}
.chat-empty-text {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin: 0 0 var(--spacing-lg);
  max-width: 400px;
}
.chat-empty-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  justify-content: center;
  margin-bottom: var(--spacing-lg);
  max-width: 500px;
}
.chat-empty-suggestion {
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-family: inherit;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--duration-fast);
}
.chat-empty-suggestion:hover {
  border-color: var(--color-primary-border);
  color: var(--color-primary);
  background: var(--color-bg-secondary);
}
.chat-empty-hints {
  display: flex;
  gap: var(--spacing-md);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}
.chat-empty-hints span {
  display: flex;
  align-items: center;
  gap: 4px;
}
.chat-empty-hints i {
  font-size: 0.625rem;
}

/* Activity group (thinking + tools collapsed into one line) */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.chat-activity-group {
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow: hidden;
  border-left: 2px solid var(--color-border-subtle);
}
.chat-activity-streaming {
  border-left-color: var(--color-primary);
}
.chat-activity-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-sm);
  padding: 6px 12px;
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  color: var(--color-text-muted);
  transition: color 150ms;
  width: 100%;
  text-align: left;
}
.chat-activity-toggle:hover {
  color: var(--color-text-secondary);
}
.chat-activity-toggle i {
  font-size: 0.5rem;
  flex-shrink: 0;
  opacity: 0.4;
}
.chat-activity-summary {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.7rem;
  letter-spacing: 0.01em;
}
.chat-activity-count {
  display: inline-block;
  margin-left: 6px;
  padding: 0 5px;
  border-radius: 999px;
  background: var(--color-bg-tertiary);
  font-size: 0.6rem;
  color: var(--color-text-muted);
}
.chat-activity-shimmer {
  background: linear-gradient(
    90deg,
    var(--color-text-muted) 0%,
    var(--color-text-muted) 40%,
    var(--color-primary) 50%,
    var(--color-text-muted) 60%,
    var(--color-text-muted) 100%
  );
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shimmer 3s ease-in-out infinite;
}
.chat-activity-details {
  display: flex;
  flex-direction: column;
  padding: 2px 0 6px;
  min-width: 0;
  overflow: hidden;
}
.chat-activity-item {
  padding: 3px 12px;
  font-size: 0.7rem;
  color: var(--color-text-muted);
  display: flex;
  flex-direction: column;
  gap: 1px;
  border-left: 2px solid transparent;
  margin-left: -2px;
  min-width: 0;
  overflow: hidden;
}
.chat-activity-item-label {
  font-size: 0.575rem;
  font-weight: 600;
  color: var(--color-text-muted);
  opacity: 0.6;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.chat-activity-item-text {
  font-size: 0.7rem;
  color: var(--color-text-secondary);
  word-break: break-word;
  white-space: pre-wrap;
}
.chat-activity-item-content {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  max-height: 200px;
  overflow-y: auto;
  overflow-x: hidden;
  line-height: 1.5;
  word-break: break-word;
  overflow-wrap: anywhere;
  min-width: 0;
}
.chat-activity-item-content.chat-activity-live {
  max-height: 300px;
}
.chat-activity-item-content p { margin: 0 0 4px; }
.chat-activity-item-content p:last-child { margin-bottom: 0; }
.chat-activity-item-content pre {
  background: var(--color-bg-tertiary);
  padding: var(--spacing-xs);
  border-radius: var(--radius-sm);
  overflow-x: auto;
  font-size: 0.75rem;
  white-space: pre-wrap;
  word-break: break-word;
}
.chat-activity-item-content code {
  word-break: break-word;
  overflow-wrap: anywhere;
}
.chat-activity-item-code {
  margin: 2px 0 0;
  font-size: 0.65rem;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--color-text-muted);
  max-height: 120px;
  overflow-y: auto;
}
.chat-activity-item-code code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
}
.chat-activity-params {
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin-top: 2px;
}
.chat-activity-param {
  display: flex;
  gap: 6px;
  font-size: 0.675rem;
  line-height: 1.4;
  word-break: break-word;
}
.chat-activity-param-key {
  color: var(--color-text-muted);
  flex-shrink: 0;
  opacity: 0.7;
}
.chat-activity-param-val {
  color: var(--color-text-secondary);
  white-space: pre-wrap;
  word-break: break-word;
  min-width: 0;
}
.chat-activity-param-val-long {
  max-height: 80px;
  overflow-y: auto;
}
.chat-activity-thinking {
  border-left-color: rgba(59, 130, 246, 0.3);
}
.chat-activity-tool-call {
  border-left-color: rgba(245, 158, 11, 0.3);
}
.chat-activity-tool-result {
  border-left-color: rgba(34, 197, 94, 0.3);
}

/* Context window progress bar */
.chat-context-bar {
  position: relative;
  height: 18px;
  background: var(--color-bg-tertiary);
  border-bottom: 1px solid var(--color-border-subtle);
  overflow: hidden;
}
.chat-context-progress {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  transition: width 300ms ease;
  opacity: 0.3;
}
.chat-context-label {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  font-size: 0.625rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

/* Chat header */
.chat-header {
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--color-bg-secondary);
  flex-shrink: 0;
}
.chat-header-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 200px;
}
.chat-header-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}
.chat-header-actions .btn-secondary.active {
  background: var(--color-primary-light);
  border-color: var(--color-primary-border);
  color: var(--color-primary);
}
/* Chat MCP dropdown */
.chat-mcp-dropdown {
  position: relative;
  display: inline-block;
}
.chat-mcp-dropdown .btn {
  display: flex;
  align-items: center;
  gap: 5px;
}
.chat-mcp-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 9px;
  background: rgba(255,255,255,0.25);
  font-size: 0.7rem;
  font-weight: 600;
  line-height: 1;
}
.chat-mcp-dropdown-menu {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  z-index: 100;
  min-width: 240px;
  max-height: 320px;
  overflow-y: auto;
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  animation: dropdownIn 120ms ease-out;
}
.chat-mcp-dropdown-loading,
.chat-mcp-dropdown-empty {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}
.chat-mcp-dropdown-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-xs) var(--spacing-md);
  border-bottom: 1px solid var(--color-border-divider);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.chat-mcp-select-all {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.75rem;
  color: var(--color-accent);
  cursor: pointer;
  text-transform: none;
  letter-spacing: 0;
}
.chat-mcp-select-all:hover {
  text-decoration: underline;
}
.chat-mcp-server-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: var(--spacing-xs) var(--spacing-md);
  cursor: pointer;
  transition: background 120ms;
}
.chat-mcp-server-item:hover {
  background: var(--color-bg-hover);
}
.chat-mcp-server-item input[type="checkbox"] {
  flex-shrink: 0;
}
.chat-mcp-server-info {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}
.chat-mcp-server-name {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.chat-mcp-server-tools {
  font-size: 0.7rem;
  color: var(--color-text-tertiary);
}

/* Client MCP status indicators */
.chat-client-mcp-status {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
  background: var(--color-text-tertiary);
}
.chat-client-mcp-status-connected {
  background: var(--color-success);
  box-shadow: 0 0 4px rgba(34, 197, 94, 0.5);
}
.chat-client-mcp-status-connecting {
  background: var(--color-warning);
  animation: pulse 1s infinite;
}
.chat-client-mcp-status-error {
  background: var(--color-error);
}
.chat-client-mcp-status-disconnected {
  background: var(--color-text-tertiary);
}

/* Chat model info panel */
.chat-model-info-panel {
  background: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border-subtle);
  animation: fadeIn 150ms ease;
}
.chat-model-info-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-primary);
  border-bottom: 1px solid var(--color-border-divider);
}
.chat-model-info-body {
  padding: var(--spacing-sm) var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-height: 200px;
  overflow-y: auto;
}
.chat-model-info-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  padding: 2px 0;
}
.chat-model-info-row > span:first-child {
  color: var(--color-text-secondary);
  font-weight: 500;
}
.chat-model-info-row > span:last-child {
  color: var(--color-text-primary);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  max-width: 60%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-align: right;
}

/* Settings drawer */
.chat-settings-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
  z-index: 10;
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms;
}
.chat-settings-overlay.open {
  opacity: 1;
  pointer-events: auto;
}
.chat-settings-drawer {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 320px;
  max-width: 90%;
  background: var(--color-bg-secondary);
  border-left: 1px solid var(--color-border-subtle);
  z-index: 11;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 250ms var(--ease-default);
  box-shadow: var(--shadow-lg);
  will-change: transform;
}
.chat-settings-drawer.open {
  transform: translateX(0);
}
.chat-settings-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--color-border-subtle);
  font-weight: 600;
  font-size: 0.875rem;
}
.chat-settings-drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

/* Chat search */
.chat-search-wrapper {
  position: relative;
  margin-bottom: var(--spacing-xs);
}
.chat-search-icon {
  position: absolute;
  left: 8px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  font-size: 0.7rem;
  pointer-events: none;
}
.chat-search-input {
  width: 100%;
  padding: 5px 24px 5px 26px;
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  color: var(--color-text-primary);
  outline: none;
  transition: border-color 150ms;
}
.chat-search-input:focus {
  border-color: var(--color-primary-border);
}
.chat-search-input::placeholder {
  color: var(--color-text-muted);
}
.chat-search-clear {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 0.7rem;
  padding: 2px;
}

/* Chat list item actions */
.chat-list-item-actions {
  display: flex;
  gap: 2px;
  opacity: 0;
  transition: opacity 150ms;
  flex-shrink: 0;
}
.chat-list-item:hover .chat-list-item-actions {
  opacity: 1;
}
.chat-list-item-actions button {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 2px;
  font-size: 0.7rem;
}
.chat-list-item-actions button:hover {
  color: var(--color-text-primary);
}
.chat-list-item-actions .chat-list-item-delete:hover {
  color: var(--color-error);
}

/* Max tokens/sec badge */
.chat-max-tps-badge {
  background: rgba(59, 130, 246, 0.15);
  color: var(--color-primary);
  padding: 1px 6px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.7rem;
}

/* Slider styles */
.chat-slider {
  width: 100%;
  height: 4px;
  appearance: none;
  -webkit-appearance: none;
  background: var(--color-border-default);
  border-radius: 2px;
  outline: none;
}
.chat-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
}
.chat-slider::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
  border: none;
}
.chat-slider-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.625rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* Message inline files */
.chat-message-files {
  display: flex;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
  margin-top: var(--spacing-xs);
}
.chat-file-inline {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 6px;
  background: rgba(59, 130, 246, 0.1);
  border-radius: var(--radius-sm);
  font-size: 0.7rem;
  color: var(--color-text-secondary);
}
.chat-inline-image {
  max-width: 200px;
  max-height: 200px;
  border-radius: var(--radius-md);
  margin-top: var(--spacing-xs);
}

.chat-files {
  display: flex;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
  padding: var(--spacing-xs) var(--spacing-lg);
}

.chat-file-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

.chat-file-badge button {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 0;
  font-size: 0.625rem;
}

/* Studio tabs */
.studio-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--color-border-subtle);
  padding: 0 var(--spacing-xl);
  background: var(--color-bg-primary);
  position: sticky;
  top: 0;
  z-index: 10;
}

.studio-tab {
  display: flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.8125rem;
  font-family: inherit;
  color: var(--color-text-secondary);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: color var(--duration-fast), border-color var(--duration-fast);
}

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

.studio-tab-active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  font-weight: 500;
}

/* Two-column layout for media generation pages */
.media-layout {
  display: grid;
  grid-template-columns: minmax(320px, 400px) 1fr;
  gap: var(--spacing-lg);
  padding: var(--spacing-xl);
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  align-items: start;
}

.media-controls {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  position: sticky;
  top: var(--spacing-lg);
}

.media-controls .page-header {
  margin-bottom: var(--spacing-md);
  padding: 0;
}

.media-controls .page-title {
  font-size: 1.125rem;
}

.media-preview {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.media-result {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.media-result img,
.media-result video {
  max-width: 100%;
  border-radius: var(--radius-md);
}

.media-result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--spacing-sm);
  width: 100%;
}

/* Responsive */
@media (max-width: 1023px) {
  .main-content,
  .sidebar-is-collapsed .main-content {
    margin-left: 0;
  }

  .mobile-header {
    display: flex;
  }

  .sidebar {
    transform: translateX(-100%);
    width: var(--sidebar-width);
  }

  .sidebar.collapsed {
    width: var(--sidebar-width);
  }

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

  .sidebar-close-btn {
    display: block;
  }

  .sidebar-collapse-btn {
    display: none;
  }

  .sidebar.collapsed .nav-label,
  .sidebar.collapsed .nav-external,
  .sidebar.collapsed .sidebar-section-title {
    display: unset;
  }

  .sidebar.collapsed .sidebar-logo-link {
    display: block;
  }

  .sidebar.collapsed .sidebar-logo-icon {
    display: none;
  }

  .sidebar.collapsed .nav-item {
    justify-content: flex-start;
    padding: 6px var(--spacing-sm);
    border-left-width: 3px;
  }

  .sidebar.collapsed .nav-icon {
    width: 18px;
    font-size: 0.85rem;
  }

  .sidebar.collapsed .sidebar-header {
    justify-content: space-between;
  }

  .sidebar-overlay {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 40;
  }

  .chat-sidebar {
    display: none;
  }

  .chat-settings-drawer {
    width: 100%;
    max-width: 100%;
  }

  .media-layout {
    grid-template-columns: 1fr;
  }

  .media-controls {
    position: static;
  }

  .page {
    padding: var(--spacing-md);
  }
}

/* Canvas panel */
.canvas-panel {
  width: 45%;
  max-width: 720px;
  flex-shrink: 1;
  border-left: 1px solid var(--color-border-subtle);
  display: flex;
  flex-direction: column;
  background: var(--color-bg-primary);
  overflow: hidden;
}
.canvas-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid var(--color-border-subtle);
  gap: var(--spacing-sm);
  flex-shrink: 0;
}
.canvas-panel-title {
  font-weight: 600;
  font-size: 0.875rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.canvas-panel-tabs {
  overflow-x: auto;
  display: flex;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-md);
  border-bottom: 1px solid var(--color-border-subtle);
  flex-shrink: 0;
  scrollbar-width: thin;
}
.canvas-panel-tab {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--color-border-subtle);
  background: transparent;
  color: var(--color-text-secondary);
  font-size: 0.75rem;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  transition: all 150ms;
}
.canvas-panel-tab:hover { border-color: var(--color-border-default); }
.canvas-panel-tab.active {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.canvas-panel-tab span {
  max-width: 100px;
  overflow: hidden;
  text-overflow: ellipsis;
}
.canvas-panel-toolbar {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-md);
  border-bottom: 1px solid var(--color-border-subtle);
  flex-shrink: 0;
}
.canvas-toggle-group {
  display: flex;
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.canvas-toggle-btn {
  padding: 2px 10px;
  font-size: 0.75rem;
  border: none;
  background: transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all 150ms;
}
.canvas-toggle-btn.active {
  background: var(--color-primary);
  color: var(--color-primary-text);
}
.canvas-panel-body {
  flex: 1;
  overflow: auto;
  padding: var(--spacing-md);
  min-height: 0;
}
.canvas-panel-body pre {
  margin: 0;
  font-size: 0.8125rem;
}

/* Artifact card (inline in messages) */
.artifact-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  cursor: pointer;
  background: var(--color-bg-tertiary);
  margin: var(--spacing-sm) 0;
  transition: border-color 150ms;
}
.artifact-card:hover {
  border-color: var(--color-primary);
}
.artifact-card-icon {
  font-size: 1.1rem;
  color: var(--color-primary);
  flex-shrink: 0;
}
.artifact-card-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.artifact-card-title {
  font-weight: 600;
  font-size: 0.8125rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.artifact-card-lang {
  font-size: 0.7rem;
  color: var(--color-text-muted);
}
.artifact-card-actions {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
}
.artifact-card-actions button {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 4px 6px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  transition: all 150ms;
}
.artifact-card-actions button:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

/* Resource cards (below agent messages) */
.resource-cards {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-xs);
}
.resource-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.8rem;
  background: var(--color-bg-secondary);
  transition: border-color 150ms;
}
.resource-card:hover {
  border-color: var(--color-primary);
}
.resource-card-thumb {
  width: 40px;
  height: 40px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}
.resource-card-label {
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.resource-cards-more {
  background: none;
  border: 1px dashed var(--color-border-default);
  border-radius: var(--radius-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  cursor: pointer;
}
.resource-cards-more:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

/* Canvas preview types */
.canvas-preview-iframe {
  width: 100%;
  min-height: 600px;
  height: calc(100vh - 200px);
  border: none;
  background: white;
  border-radius: var(--radius-md);
}
.canvas-preview-image {
  max-width: 100%;
  border-radius: var(--radius-md);
}
.canvas-preview-svg {
  display: flex;
  justify-content: center;
  padding: var(--spacing-md);
}
.canvas-preview-svg svg {
  max-width: 100%;
  height: auto;
}
.canvas-preview-markdown {
  padding: var(--spacing-sm);
}
.canvas-audio-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
}
.canvas-audio-icon {
  font-size: 2rem;
  color: var(--color-primary);
}
.canvas-url-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
}
.canvas-url-card a {
  color: var(--color-primary);
  word-break: break-all;
}

/* Canvas mode toggle */
.canvas-mode-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}
.canvas-mode-toggle .canvas-mode-label {
  font-weight: 500;
  cursor: pointer;
}
.canvas-mode-toggle .toggle {
  transform: scale(0.8);
}

@media (max-width: 768px) {
  .canvas-panel {
    position: fixed;
    inset: 0;
    width: 100%;
    z-index: 50;
  }
}

@media (max-width: 640px) {
  .card-grid {
    grid-template-columns: 1fr;
  }

  .filter-bar {
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: var(--spacing-xs);
  }

  .chat-header {
    flex-wrap: wrap;
  }

  .chat-header-title {
    max-width: 120px;
  }

  .chat-empty-hints {
    flex-direction: column;
    gap: var(--spacing-xs);
  }

  .chat-empty-suggestions {
    flex-direction: column;
    align-items: stretch;
  }
}

/* MCP App Frame */
.mcp-app-frame-container {
  width: 100%;
  margin: var(--spacing-sm) 0;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border-subtle);
}

.mcp-app-iframe {
  width: 100%;
  border: none;
  display: block;
  min-height: 100px;
  max-height: 600px;
  transition: height 0.2s ease;
  background: var(--color-bg-primary);
}

.mcp-app-error {
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--color-text-danger, #e53e3e);
  font-size: 0.85rem;
}

.mcp-app-reconnect-overlay {
  padding: var(--spacing-sm);
  text-align: center;
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border-subtle);
}

/* Confirm Dialog */
.confirm-dialog-backdrop {
  position: fixed;
  inset: 0;
  z-index: 1050;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-modal-backdrop);
  backdrop-filter: blur(4px);
  animation: fadeIn 150ms ease;
}
.confirm-dialog {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  max-width: 420px;
  width: 90%;
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-lg);
  animation: slideUp 150ms ease;
  will-change: transform, opacity;
}
@keyframes slideUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
.confirm-dialog-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}
.confirm-dialog-danger-icon {
  color: var(--color-error);
  font-size: 1.125rem;
}
.confirm-dialog-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-primary);
}
.confirm-dialog-body {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.5;
}
.confirm-dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-sm);
}
.btn-danger {
  background: var(--color-error);
  color: white;
  border: none;
}
.btn-danger:hover {
  background: var(--color-error-hover, #dc2626);
}

/* Home page */
.home-page {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  max-width: 48rem;
  margin: 0 auto;
  padding: var(--spacing-xl);
  width: 100%;
}
.home-hero {
  text-align: center;
  padding: var(--spacing-md) 0;
}
.home-logo {
  width: 80px;
  height: auto;
  margin: 0 auto var(--spacing-sm);
  display: block;
}

/* Home resource bar - prominent */
.home-resource-bar {
  width: 100%;
  max-width: 320px;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
}
.home-resource-bar-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
}
.home-resource-label {
  font-weight: 500;
}
.home-resource-pct {
  margin-left: auto;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 500;
}
.home-resource-track {
  width: 100%;
  height: 6px;
  background: var(--color-bg-tertiary);
  border-radius: 3px;
  overflow: hidden;
}
.home-resource-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 500ms ease;
}

/* Home chat card */
.home-chat-card {
  width: 100%;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}
.home-model-row {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}
.home-file-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-sm);
}
.home-file-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}
.home-file-tag button {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 0;
  font-size: 0.625rem;
}

/* Home input container */
.home-input-container {
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-lg);
  transition: border-color var(--duration-fast), box-shadow var(--duration-fast);
}
.home-input-container:focus-within {
  border-color: var(--color-primary-border);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12), 0 0 12px rgba(59, 130, 246, 0.06);
}
.home-textarea {
  width: 100%;
  background: transparent;
  color: var(--color-text-primary);
  border: none;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.875rem;
  font-family: inherit;
  outline: none;
  resize: none;
  min-height: 80px;
  line-height: 1.5;
}
.home-textarea::placeholder {
  color: var(--color-text-muted);
}
.home-input-footer {
  display: flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-top: 1px solid var(--color-border-subtle);
}
.home-attach-buttons {
  display: flex;
  gap: 2px;
}
.home-attach-btn {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 4px 8px;
  font-size: 0.875rem;
  border-radius: var(--radius-sm);
  transition: color var(--duration-fast);
}
.home-attach-btn:hover {
  color: var(--color-primary);
}
.home-input-hint {
  flex: 1;
  text-align: center;
  font-size: 0.6875rem;
  color: var(--color-text-muted);
}
.home-send-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--color-primary);
  color: var(--color-primary-text);
  border: none;
  border-radius: 50%;
  font-size: 0.8125rem;
  cursor: pointer;
  transition: background var(--duration-fast), transform 100ms;
  flex-shrink: 0;
}
.home-send-btn:hover:not(:disabled) {
  background: var(--color-primary-hover);
  transform: scale(1.05);
}
.home-send-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}
.home-send-btn:active:not(:disabled) {
  transform: scale(0.92);
}

/* Home quick links */
.home-quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  justify-content: center;
  margin: var(--spacing-md) 0;
}
.home-link-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-family: inherit;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--duration-fast);
}
.home-link-btn:hover {
  border-color: var(--color-primary-border);
  color: var(--color-primary);
  transform: translateY(-1px);
}

/* Home loaded models */
.home-loaded-models {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  width: 100%;
}
.home-loaded-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-success);
}
.home-loaded-text {
  font-weight: 500;
  margin-right: var(--spacing-xs);
}
.home-loaded-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}
.home-loaded-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
}
.home-loaded-item button {
  background: none;
  border: none;
  color: var(--color-error);
  cursor: pointer;
  padding: 0;
  font-size: 0.625rem;
}
.home-stop-all {
  margin-left: auto;
  background: none;
  border: 1px solid var(--color-error);
  color: var(--color-error);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  cursor: pointer;
  font-family: inherit;
}

/* Home wizard (no models) */
.home-wizard {
  max-width: 48rem;
  width: 100%;
}
.home-wizard-hero {
  text-align: center;
  padding: var(--spacing-xl) 0;
}
.home-wizard-hero h1 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}
.home-wizard-hero p {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}
.home-wizard-steps {
  margin-bottom: var(--spacing-xl);
}
.home-wizard-steps h2 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}
.home-wizard-step {
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
  padding: var(--spacing-sm) 0;
}
.home-wizard-step-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8125rem;
  font-weight: 600;
  flex-shrink: 0;
}
.home-wizard-step strong {
  display: block;
  margin-bottom: 2px;
}
.home-wizard-step p {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin: 0;
}
.home-wizard-actions {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
}

/* Reduced motion accessibility */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}