/* 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);
}

.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;
}

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

/* 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: transform var(--duration-normal) var(--ease-default);
}

.sidebar-overlay {
  display: none;
}

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

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

.sidebar-logo-img {
  width: 100%;
  max-width: 140px;
  height: auto;
  padding: 0 var(--spacing-xs);
}

.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: var(--spacing-xs) 0;
  overflow-y: auto;
}

.sidebar-section {
  padding: var(--spacing-xs) 0;
}

.sidebar-section-title {
  padding: var(--spacing-sm) var(--spacing-md) var(--spacing-xs);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  transition: all var(--duration-fast) var(--ease-default);
  border-left: 3px solid transparent;
}

.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: 20px;
  text-align: center;
}

.nav-label {
  flex: 1;
}

.sidebar-footer {
  padding: var(--spacing-sm) var(--spacing-md);
  border-top: 1px solid var(--color-border-subtle);
}

/* 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;
}

.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);
}

.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 {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 2px;
  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: 100;
  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-success {
  background: rgba(20, 184, 166, 0.15);
  border: 1px solid rgba(20, 184, 166, 0.3);
  color: var(--color-success);
}
.toast-error {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--color-error);
}
.toast-warning {
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: var(--color-warning);
}
.toast-info {
  background: rgba(56, 189, 248, 0.15);
  border: 1px solid rgba(56, 189, 248, 0.3);
  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; }

/* 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%;
}

.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);
}

.card:hover {
  border-color: var(--color-border-default);
}

.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: all 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: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);
}

.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);
}

/* 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);
}

.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;
}

/* 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);
}

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

.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; }
}

/* Chat-specific styles */
.chat-layout {
  display: flex;
  flex: 1;
  min-height: 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: all var(--duration-fast);
  margin-bottom: 2px;
}

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

.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;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  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%;
  animation: fadeIn 200ms ease;
}

.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-sm) var(--spacing-md);
  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-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 2px rgba(99, 102, 241, 0.1);
}

.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-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;
}

/* 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-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;
}

/* Thinking/Reasoning box */
.chat-thinking-box {
  margin: var(--spacing-xs) var(--spacing-md);
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-lg);
}
.chat-thinking-box-streaming {
  padding: var(--spacing-sm) var(--spacing-md);
}
.chat-thinking-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--spacing-md);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-primary);
  font-family: inherit;
  font-size: 0.8125rem;
  transition: background 150ms;
}
.chat-thinking-header:hover {
  background: rgba(99, 102, 241, 0.15);
}
.chat-thinking-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary);
}
.chat-thinking-content {
  padding: var(--spacing-sm) var(--spacing-md);
  border-top: 1px solid rgba(99, 102, 241, 0.2);
  font-size: 0.875rem;
  max-height: 384px;
  overflow-y: auto;
  overflow-x: hidden;
  color: var(--color-text-primary);
}
.chat-thinking-content p { margin: 0 0 var(--spacing-xs); }
.chat-thinking-content p:last-child { margin-bottom: 0; }
.chat-thinking-content pre {
  background: var(--color-bg-tertiary);
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  overflow-x: auto;
  font-size: 0.8125rem;
}
.chat-thinking-content code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8125rem;
}

/* Tool call/result boxes */
.chat-tool-box {
  margin: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-lg);
}
.chat-tool-box-call {
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.3);
}
.chat-tool-box-result {
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
}
.chat-tool-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--spacing-md);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-primary);
  font-family: inherit;
  font-size: 0.8125rem;
  transition: background 150ms;
}
.chat-tool-header:hover {
  background: rgba(139, 92, 246, 0.1);
}
.chat-tool-label {
  font-size: 0.75rem;
  font-weight: 600;
}
.chat-tool-content {
  padding: var(--spacing-sm) var(--spacing-md);
  border-top: 1px solid rgba(139, 92, 246, 0.15);
  max-height: 300px;
  overflow-y: auto;
  overflow-x: hidden;
}
.chat-tool-content pre {
  margin: 0;
  font-size: 0.75rem;
  white-space: pre-wrap;
  word-break: break-word;
}
.chat-tool-content code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

/* 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 toggle switch */
.chat-mcp-switch {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  user-select: none;
}
.chat-mcp-switch-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

/* 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);
}
.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(99, 102, 241, 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-bg-tertiary);
  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(99, 102, 241, 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;
}

/* 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 {
    margin-left: 0;
  }

  .mobile-header {
    display: flex;
  }

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

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

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

  .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);
  }
}

@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);
  }
}
