/* =============================================================================
   Sparrow Web Chat - Main Stylesheet
   ============================================================================= */

/* CSS Variables */
:root {
  --primary-color: #4FB6C2;
  --primary-hover: #3A9BA6;
  --primary-active: #2D8A94;
  --secondary-color: #6DCAD4;
  
  --background: #ffffff;
  --surface: #f8f9fb;
  --surface-elevated: #ffffff;
  --border-color: rgba(0, 0, 0, 0.08);
  
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --text-tertiary: #9ca3b8;
  
  --message-user-bg: #E0F4F6;
  --message-assistant-bg: #F5F5F5;
  
  --sidebar-width: 280px;
  --header-height: 60px;
  
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;

  /* iOS Safe Area Insets */
  --safe-area-top: env(safe-area-inset-top, 0px);
  --safe-area-bottom: env(safe-area-inset-bottom, 0px);
  --safe-area-left: env(safe-area-inset-left, 0px);
  --safe-area-right: env(safe-area-inset-right, 0px);
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
  :root {
    --background: #0f172a;
    --surface: #1e293b;
    --surface-elevated: #334155;
    --border-color: rgba(255, 255, 255, 0.1);
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --message-user-bg: #1A4A4F;
    --message-assistant-bg: #2D3748;
  }
}

/* Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--background);
  color: var(--text-primary);
  line-height: 1.5;
  overflow: hidden;
}

.hidden {
  display: none !important;
}

/* =============================================================================
   APP LAYOUT
   ============================================================================= */
#app {
  display: flex;
  height: 100vh;
  width: 100vw;
}

/* =============================================================================
   SIDEBAR
   ============================================================================= */
.sidebar {
  width: var(--sidebar-width);
  background: var(--surface);
  display: flex;
  flex-direction: column;
  transition: width var(--transition-base);
}

.sidebar.collapsed {
  width: 0;
  overflow: hidden;
}

/* =============================================================================
   SIDEBAR COLLAPSED STRIP (ChatGPT-style vertical icon bar)
   ============================================================================= */
.sidebar-strip {
  width: 0;
  overflow: hidden;
  background: var(--surface);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  padding: 0;
  flex-shrink: 0;
  transition: width var(--transition-base), padding var(--transition-base);
}

.sidebar-strip.visible {
  width: 52px;
  padding: 10px 0;
}

.strip-top,
.strip-bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.strip-btn {
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: background var(--transition-fast), color var(--transition-fast);
}

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

.strip-logo-btn {
  padding: 4px;
}

.strip-logo {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

.strip-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary-color);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
}

.strip-avatar-btn {
  width: 40px;
  height: 40px;
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  height: var(--header-height);
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo {
  width: 32px;
  height: 32px;
}

.logo-text {
  font-size: 18px;
  font-weight: 600;
  color: var(--primary-color);
}

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

.close-sidebar-btn {
  display: none;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.close-sidebar-btn:hover {
  background: #ef4444;
  color: white;
  border-color: #ef4444;
}

.new-chat-btn {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.new-chat-btn:hover {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.sidebar-section {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* Section label (Projects / Recents) */
.sidebar-section-label {
  padding: 16px 14px 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-tertiary);
  letter-spacing: 0.3px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
  cursor: pointer;
  user-select: none;
}

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

.sidebar-section-label-left {
  display: flex;
  align-items: center;
  gap: 6px;
}

.sidebar-section-chevron {
  font-size: 9px;
  transition: transform 0.2s ease;
  width: 10px;
  text-align: center;
}

.sidebar-section-label.collapsed .sidebar-section-chevron {
  transform: rotate(-90deg);
}

/* Projects section */
.sidebar-projects-section {
  flex-shrink: 0;
  max-height: 40%;
  overflow-y: auto;
}

.projects-list {
  padding: 0 8px 8px;
}

.projects-list:empty {
  display: none;
}

/* Collapsible section content */
.sidebar-projects-section .projects-list.section-collapsed,
.sidebar-chats-section .chats-list.section-collapsed {
  display: none;
}

/* Chats section */
.sidebar-chats-section {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 0;
  transition: background 0.15s ease, outline-color 0.15s ease;
  border-radius: var(--radius-sm);
}

.sidebar-chats-section.drop-target {
  outline: 2px dashed rgba(79, 182, 194, 0.3);
  outline-offset: -2px;
}

.sidebar-chats-section.drag-over {
  outline-color: var(--primary-color);
  background: rgba(79, 182, 194, 0.04);
}

.chats-list {
  flex: 1;
  overflow-y: auto;
  padding: 0 8px 8px;
}

.chat-item {
  padding: 10px 12px;
  border-radius: var(--radius-md);
  cursor: pointer;
  margin-bottom: 1px;
  position: relative;
  transition: background var(--transition-fast);
}

.chat-item:hover {
  background: var(--surface-elevated);
}

.chat-item.active {
  background: rgba(79, 182, 194, 0.1);
}

.chat-item.editing {
  cursor: default;
  background: var(--surface-elevated);
}

.chat-item-title-container {
  display: flex;
  align-items: center;
  gap: 4px;
  padding-right: 24px;
}

.chat-item-title {
  font-size: 14px;
  font-weight: 400;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
  color: var(--text-primary);
}

.chat-item-title-input {
  flex: 1;
  font-size: 13px;
  font-weight: 400;
  color: var(--text-primary);
  background: var(--background);
  border: 1px solid var(--primary-color);
  border-radius: var(--radius-sm);
  padding: 2px 6px;
  outline: none;
  min-width: 0;
}

.chat-item-title-input:focus {
  box-shadow: 0 0 0 2px rgba(79, 182, 194, 0.2);
}

/* Three-dot more button */
.chat-item-more {
  position: absolute;
  top: 50%;
  right: 8px;
  transform: translateY(-50%);
  width: 24px;
  height: 24px;
  border: none;
  background: transparent;
  color: var(--text-tertiary);
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--transition-fast);
  border-radius: var(--radius-sm);
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.chat-item:hover .chat-item-more {
  opacity: 1;
}

.chat-item-more:hover {
  color: var(--text-primary);
  background: var(--surface-elevated);
}

.chat-item.active .chat-item-more:hover {
  background: rgba(79, 182, 194, 0.15);
}

.chat-item.editing .chat-item-more {
  display: none;
}

/* Context menu (shared between chat items and project groups) */
.chat-context-menu {
  position: fixed;
  z-index: 10000;
  background: var(--surface, #fff);
  border: 1px solid var(--border-color, #ddd);
  border-radius: var(--radius-md, 8px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.18);
  min-width: 180px;
  max-width: 260px;
  padding: 4px;
  overflow: hidden;
}

.chat-context-menu-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  font-size: 13px;
  color: var(--text-primary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background 0.1s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chat-context-menu-item:hover {
  background: var(--surface-elevated, #f0f0f0);
}

.chat-context-menu-item.danger {
  color: #ef4444;
}

.chat-context-menu-item.danger:hover {
  background: rgba(239, 68, 68, 0.08);
}

.chat-context-menu-item i {
  font-size: 13px;
  width: 18px;
  text-align: center;
  flex-shrink: 0;
  color: var(--text-secondary);
}

.chat-context-menu-item.danger i {
  color: #ef4444;
}

.chat-context-menu-item.active {
  color: var(--primary-color);
  font-weight: 600;
}

.chat-context-menu-divider {
  height: 1px;
  background: var(--border-color, #ddd);
  margin: 4px 8px;
}

/* Submenu arrow */
.chat-context-menu-item .menu-arrow {
  margin-left: auto;
  font-size: 11px;
  color: var(--text-tertiary);
}

/* Submenu wrapper for flyout */
.chat-context-submenu-wrapper {
  position: relative;
}

.chat-context-submenu {
  position: fixed;
  z-index: 10001;
  background: var(--surface, #fff);
  border: 1px solid var(--border-color, #ddd);
  border-radius: var(--radius-md, 8px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.18);
  min-width: 160px;
  max-width: 240px;
  padding: 4px;
  display: none;
}

.chat-context-submenu.visible {
  display: block;
}

.chat-context-submenu-wrapper.submenu-active > .chat-context-menu-item {
  background: var(--surface-elevated, #f0f0f0);
}

/* Create Group Button */
.create-group-btn {
  background: transparent;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  font-size: 13px;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}

.create-group-btn:hover {
  color: var(--primary-color);
  background: rgba(79, 182, 194, 0.1);
}

/* Chat Group Styles */
.chat-group {
  margin-top: 0;
  margin-bottom: 0;
}

.chat-group-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 14px;
  font-weight: 400;
  color: var(--text-primary);
  transition: background 0.15s ease;
  position: relative;
  user-select: none;
  margin-bottom: 1px;
}

.chat-group-header:hover {
  background: var(--surface-elevated);
}

.chat-group-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chat-group-name-input {
  flex: 1;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
  background: var(--background);
  border: 1px solid var(--primary-color);
  border-radius: var(--radius-sm);
  padding: 1px 4px;
  outline: none;
  min-width: 0;
}

.chat-group-rename,
.chat-group-delete {
  background: transparent;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  font-size: 10px;
  padding: 2px 4px;
  border-radius: var(--radius-sm);
  opacity: 0;
  transition: opacity 0.15s ease;
  flex-shrink: 0;
  display: none;
}

.chat-group-header:hover .chat-group-rename,
.chat-group-header:hover .chat-group-delete {
  opacity: 1;
  display: none;
}

.chat-group-rename:hover {
  color: var(--primary-color);
}

.chat-group-delete:hover {
  color: #ef4444;
}

/* Three-dot menu for groups */
.chat-group-more {
  background: transparent;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  font-size: 14px;
  padding: 2px 4px;
  border-radius: var(--radius-sm);
  opacity: 0;
  transition: opacity 0.15s ease;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
}

.chat-group-header:hover .chat-group-more {
  opacity: 1;
}

.chat-group-more:hover {
  color: var(--text-primary);
  background: var(--surface-elevated);
}

.chat-group-body {
  padding-left: 0;
  border-left: none;
  margin-left: 0;
  overflow: hidden;
  transition: max-height 0.2s ease, opacity 0.2s ease;
}

.chat-group-body.collapsed {
  display: none;
}

.chat-group-body .chat-item {
  padding: 6px 10px 6px 24px;
}

/* Drag and Drop */
.chat-item[draggable="true"] {
  cursor: grab;
}

.chat-item.dragging {
  opacity: 0.4;
  cursor: grabbing;
}

.chat-group.drop-target {
  outline: 2px dashed rgba(79, 182, 194, 0.4);
  outline-offset: -2px;
  border-radius: var(--radius-sm);
}

.chat-group.drag-over {
  outline-color: var(--primary-color);
  background: rgba(79, 182, 194, 0.06);
}

/* Move-to-Group Dropdown Menu */
.group-move-menu {
  position: fixed;
  z-index: 10000;
  background: var(--surface, #fff);
  border: 1px solid var(--border-color, #ddd);
  border-radius: var(--radius-md, 8px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
  min-width: 160px;
  max-width: 240px;
  padding: 4px;
  overflow: hidden;
}

.group-move-menu-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  font-size: 13px;
  color: var(--text-primary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background 0.1s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.group-move-menu-item:hover {
  background: var(--surface-elevated, #f0f0f0);
}

.group-move-menu-item.active {
  color: var(--primary-color);
  font-weight: 600;
}

.group-move-menu-item i {
  font-size: 12px;
  color: var(--primary-color);
  width: 16px;
  text-align: center;
  flex-shrink: 0;
}

.group-move-menu-item:first-child i {
  color: var(--text-tertiary);
}

.group-move-menu-divider {
  height: 1px;
  background: var(--border-color, #ddd);
  margin: 4px 8px;
}

.empty-chats {
  text-align: center;
  color: var(--text-tertiary);
  padding: 24px;
  font-size: 14px;
}

.sidebar-footer {
  padding: 8px;
}

/* User Menu Container */
.user-menu-container {
  position: relative;
}

.user-menu-trigger {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--text-primary);
  cursor: pointer;
  font-size: 14px;
  transition: background var(--transition-fast);
}

.user-menu-trigger:hover {
  background: var(--surface-elevated);
}

.user-avatar {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--primary-color);
  color: #fff;
  font-size: 14px;
  flex-shrink: 0;
}

/* ChatGPT-style two-line trigger: name + plan */
.user-trigger-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
  flex: 1;
  text-align: left;
}

.user-trigger-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  line-height: 1.3;
}

.user-trigger-plan {
  font-size: 11px;
  color: var(--text-secondary);
  line-height: 1.3;
}

/* Popup Menu */
.user-menu-popup {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 0;
  right: 0;
  background: var(--background, #ffffff);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg, 12px);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.15);
  padding: 6px;
  display: none;
  z-index: 100;
}

.user-menu-popup.open {
  display: block;
}

.user-menu-item {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  box-sizing: border-box;
  padding: 10px 12px;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--text-primary);
  cursor: pointer;
  font-size: 14px;
  transition: background var(--transition-fast);
}

.user-menu-item:hover {
  background: var(--surface-elevated);
}

.user-menu-item i {
  width: 18px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 15px;
}

.user-menu-logout:hover:not(:disabled) {
  color: #f85149;
}

.user-menu-logout:hover:not(:disabled) i {
  color: #f85149;
}

.user-menu-item:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.user-menu-item:disabled:hover {
  background: transparent;
}

.user-menu-arrow-right {
  flex: 0 0 auto;
  margin-left: auto;
  font-size: 18px;
  font-weight: 300;
  color: var(--text-secondary);
  opacity: 0.5;
  line-height: 1;
}

.user-menu-item span:not(.user-menu-arrow-right) {
  flex: 1;
  text-align: left;
}

/* User Menu — Help Submenu */
.user-menu-submenu {
  background: var(--background, #ffffff);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg, 12px);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.15);
  padding: 6px;
  z-index: 200;
  min-width: 200px;
}

.user-menu-divider {
  height: 1px;
  background: var(--border-color);
  margin: 4px 0;
}

.user-menu-legal {
  display: flex;
  justify-content: center;
  gap: 6px;
  padding: 6px 0 4px;
  font-size: 11px;
}

.user-menu-legal a {
  color: var(--text-secondary);
  text-decoration: none;
  opacity: 0.7;
}

.user-menu-legal a:hover {
  opacity: 1;
  text-decoration: underline;
}

.user-menu-legal span {
  color: var(--text-secondary);
  opacity: 0.5;
}

/* User Menu — Profile Header */
.user-menu-profile-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 12px 8px;
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.user-menu-profile-header:hover {
  background: var(--surface-elevated);
}

.user-menu-profile-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
}

.user-menu-profile-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.user-menu-profile-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.user-menu-profile-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.user-menu-profile-handle {
  font-size: 12px;
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Avatar initials (shared between sidebar, menu, and profile modal) */
.avatar-initials {
  font-weight: 600;
  color: #fff;
  text-transform: uppercase;
  line-height: 1;
  user-select: none;
}

.user-avatar .avatar-initials {
  font-size: 13px;
}

.user-menu-profile-avatar .avatar-initials {
  font-size: 15px;
}

.user-avatar img,
.user-menu-profile-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

/* =============================================================================
   EDIT PROFILE MODAL
   ============================================================================= */
.profile-modal {
  max-width: 420px;
  width: 90%;
  border-radius: var(--radius-xl, 16px);
  overflow: hidden;
}

.profile-modal-header {
  padding: 24px 24px 0;
}

.profile-modal-header h2 {
  font-size: 20px;
  font-weight: 600;
  margin: 0;
  color: var(--text-primary);
}

.profile-modal-body {
  padding: 20px 24px 8px;
}

.profile-avatar-section {
  display: flex;
  justify-content: center;
  padding: 12px 0 20px;
}

.profile-avatar-large {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: visible;
  cursor: pointer;
}

.profile-avatar-large .avatar-initials {
  font-size: 36px;
}

.profile-avatar-large img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

.profile-avatar-camera {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--surface-elevated, #fff);
  border: 2px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 13px;
  transition: all var(--transition-fast);
}

.profile-avatar-camera:hover {
  background: var(--surface, #f0f0f0);
  color: var(--text-primary);
}

.profile-form-group {
  margin-bottom: 16px;
}

.profile-field-label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
  padding-left: 2px;
}

.profile-input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md, 8px);
  background: var(--background, #fff);
  color: var(--text-primary);
  font-size: 15px;
  font-family: inherit;
  box-sizing: border-box;
  transition: border-color var(--transition-fast);
}

.profile-input:focus {
  outline: none;
  border-color: var(--primary-color, #3b82f6);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
}

.profile-hint {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 8px 0 0;
  padding: 0 2px;
}

.profile-modal-footer {
  padding: 16px 24px 24px;
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.profile-btn {
  padding: 10px 24px;
  border-radius: var(--radius-md, 8px);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
  font-family: inherit;
}

.profile-btn-cancel {
  background: var(--background, #fff);
  color: var(--text-primary);
}

.profile-btn-cancel:hover {
  background: var(--surface, #f0f0f0);
}

.profile-btn-save {
  background: var(--text-primary, #111);
  color: var(--background, #fff);
  border-color: var(--text-primary, #111);
}

.profile-btn-save:hover {
  opacity: 0.88;
}

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

/* ─── Profile — Danger Zone (Delete Account) ─── */

.profile-danger-zone {
  margin-top: 24px;
  padding: 16px;
  border: 1px solid var(--error-color, #e53e3e);
  border-radius: var(--radius-md, 8px);
  background: color-mix(in srgb, var(--error-color, #e53e3e) 5%, transparent);
}

.profile-danger-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 13px;
  color: var(--error-color, #e53e3e);
  margin-bottom: 8px;
}

.profile-danger-text {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 0 0 12px;
}

.profile-btn-danger {
  background: transparent;
  color: var(--error-color, #e53e3e);
  border: 1px solid var(--error-color, #e53e3e);
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-md, 8px);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: inherit;
}

.profile-btn-danger:hover {
  background: var(--error-color, #e53e3e);
  color: #fff;
}

/* ─── Delete Account Confirmation Modal ─── */

.delete-account-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10001;
  animation: fadeIn 0.15s ease;
}

.delete-account-modal {
  background: var(--background, #fff);
  border-radius: var(--radius-lg, 12px);
  width: 440px;
  max-width: 90vw;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  overflow: hidden;
}

.delete-account-header {
  padding: 24px 24px 0;
  display: flex;
  align-items: center;
  gap: 12px;
}

.delete-account-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: color-mix(in srgb, var(--error-color, #e53e3e) 12%, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--error-color, #e53e3e);
  font-size: 18px;
  flex-shrink: 0;
}

.delete-account-header h3 {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
}

.delete-account-body {
  padding: 16px 24px 0;
}

.delete-account-body p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0 0 16px;
}

.delete-account-body ul {
  margin: 0 0 16px;
  padding: 0 0 0 20px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.delete-account-body ul li {
  margin: 2px 0;
}

.delete-account-field {
  margin-bottom: 14px;
}

.delete-account-field label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.delete-account-field input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm, 6px);
  font-size: 14px;
  font-family: inherit;
  background: var(--background);
  color: var(--text-primary);
  box-sizing: border-box;
  transition: border-color 0.15s;
}

.delete-account-field input:focus {
  outline: none;
  border-color: var(--error-color, #e53e3e);
}

.delete-account-error {
  display: none;
  padding: 10px 14px;
  margin: 0 24px 12px;
  border-radius: var(--radius-sm, 6px);
  background: color-mix(in srgb, var(--error-color, #e53e3e) 10%, transparent);
  color: var(--error-color, #e53e3e);
  font-size: 13px;
  align-items: center;
  gap: 8px;
}

.delete-account-footer {
  padding: 16px 24px 24px;
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.delete-account-btn-cancel {
  padding: 10px 20px;
  border-radius: var(--radius-md, 8px);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--border-color);
  background: var(--background, #fff);
  color: var(--text-primary);
  font-family: inherit;
  transition: all var(--transition-fast);
}

.delete-account-btn-cancel:hover {
  background: var(--surface, #f0f0f0);
}

.delete-account-btn-confirm {
  padding: 10px 20px;
  border-radius: var(--radius-md, 8px);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--error-color, #e53e3e);
  background: var(--error-color, #e53e3e);
  color: #fff;
  font-family: inherit;
  transition: all var(--transition-fast);
}

.delete-account-btn-confirm:hover {
  opacity: 0.9;
}

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

/* =============================================================================
   BUG REPORT MODAL
   ============================================================================= */
.bug-report-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10001;
  animation: fadeIn 0.15s ease;
}

.bug-report-modal {
  background: var(--background, #fff);
  border-radius: var(--radius-lg, 12px);
  width: 480px;
  max-width: 90vw;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  overflow: hidden;
}

.bug-report-header {
  padding: 20px 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.bug-report-header h3 {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
}

.bug-report-close {
  width: 32px;
  height: 32px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm, 6px);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: background var(--transition-fast);
}

.bug-report-close:hover {
  background: var(--surface);
}

.bug-report-body {
  padding: 16px 24px 0;
}

.bug-report-textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm, 6px);
  font-size: 14px;
  font-family: inherit;
  line-height: 1.6;
  background: var(--background);
  color: var(--text-primary);
  box-sizing: border-box;
  resize: vertical;
  min-height: 140px;
  transition: border-color 0.15s;
}

.bug-report-textarea::placeholder {
  color: var(--text-secondary);
  opacity: 0.6;
}

.bug-report-textarea:focus {
  outline: none;
  border-color: var(--primary-color, #10a37f);
}

.bug-report-char-count {
  text-align: right;
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 6px;
  opacity: 0.7;
}

.bug-report-error {
  display: none;
  padding: 10px 14px;
  margin: 12px 24px 0;
  border-radius: var(--radius-sm, 6px);
  background: color-mix(in srgb, var(--error-color, #e53e3e) 10%, transparent);
  color: var(--error-color, #e53e3e);
  font-size: 13px;
  align-items: center;
  gap: 8px;
}

.bug-report-footer {
  padding: 16px 24px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.bug-report-disclaimer {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.4;
  flex: 1;
}

.bug-report-submit {
  padding: 10px 24px;
  border-radius: var(--radius-md, 8px);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  background: var(--primary-color, #10a37f);
  color: #fff;
  font-family: inherit;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.bug-report-submit:hover {
  opacity: 0.9;
}

.bug-report-submit:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.bug-report-success {
  padding: 48px 24px;
  text-align: center;
}

.bug-report-success i {
  font-size: 40px;
  color: var(--primary-color, #10a37f);
  margin-bottom: 16px;
}

.bug-report-success h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

.bug-report-success p {
  margin: 0;
  font-size: 14px;
  color: var(--text-secondary);
}

/* =============================================================================
   MAIN CHAT CONTAINER
   ============================================================================= */
.chat-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.chat-header {
  height: var(--header-height);
  padding: 0 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--border-color);
  background: var(--surface);
  flex-shrink: 0;
}

.sidebar-toggle {
  width: 36px;
  height: 36px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.sidebar-toggle:hover {
  background: var(--surface-elevated);
}

.chat-header h1 {
  flex: 1;
  font-size: 16px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.header-actions {
  display: flex;
  gap: 8px;
}

.header-action-btn {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

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

.header-action-btn.saved {
  color: var(--primary-color);
  border-color: var(--primary-color);
  background: rgba(79, 182, 194, 0.1);
}

/* =============================================================================
   CHAT MESSAGES
   ============================================================================= */
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.welcome-screen {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 16px;
  padding: 24px;
}

.welcome-screen h2 {
  font-size: 28px;
  font-weight: 500;
  color: var(--text-primary);
}


/* =============================================================================
   WELCOME MODE — Centers greeting + input vertically (ChatGPT/Gemini style)
   ============================================================================= */
.chat-container.welcome-mode .chat-messages {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: center;
  overflow: hidden;
}

.chat-container.welcome-mode .welcome-screen {
  flex: none;
  padding: 0 24px 20px;
  gap: 12px;
}

.chat-container.welcome-mode .chat-input-container {
  flex: 1;
  padding-top: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.chat-container.welcome-mode .chat-input-box {
  width: 100%;
}

/* Message Styles */
.message-wrapper {
  display: flex;
  flex-direction: column;
  max-width: 800px;
  width: 100%;
  margin: 0 auto;
}

.message-wrapper-user {
  align-items: flex-end;
}

.message-wrapper-assistant {
  align-items: flex-start;
  gap: 6px;
}

.message {
  padding: 12px 16px;
  border-radius: var(--radius-lg);
  font-size: 16px;
  line-height: 1.7;
  width: 100%;
}

.message-user {
  background: var(--message-user-bg);
  color: var(--text-primary);
  border-bottom-right-radius: var(--radius-sm);
  width: auto;
  max-width: 85%;
}

.message-assistant {
  background: transparent;
  color: var(--text-primary);
  padding: 8px 0;
}

/* Thinking Panel (collapsible) */
.thinking-panel {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--surface);
  margin-bottom: 10px;
  overflow: hidden;
  width: 100%;
}

.thinking-summary {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  cursor: pointer;
  font-size: 12px;
  color: var(--text-secondary);
  list-style: none;
}

.thinking-summary::-webkit-details-marker {
  display: none;
}

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

.thinking-label {
  font-weight: 600;
  color: var(--text-primary);
}

.thinking-status {
  margin-left: auto;
  font-size: 11px;
  color: var(--text-tertiary);
}

.thinking-caret {
  margin-left: 6px;
  font-size: 11px;
  color: var(--text-tertiary);
  transition: transform var(--transition-fast);
}

.thinking-panel[open] .thinking-caret {
  transform: rotate(180deg);
}

.thinking-body {
  border-top: 1px solid var(--border-color);
  background: var(--surface-elevated);
  padding: 8px 10px;
}

.thinking-content {
  margin: 0;
  white-space: pre-wrap;
  font-size: 12px;
  color: var(--text-secondary);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

/* Pulse animation while thinking is actively streaming */
.thinking-panel.thinking-pulse .thinking-icon {
  animation: thinking-glow 1.2s ease-in-out infinite;
}

@keyframes thinking-glow {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

.message-actions {
  display: flex;
  gap: 4px;
  margin-top: 4px;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.message-actions-user {
  justify-content: flex-end;
}

.message-wrapper:hover .message-actions {
  opacity: 1;
}

.message-action-btn {
  width: 28px;
  height: 28px;
  border: none;
  background: transparent;
  color: var(--text-tertiary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  transition: all var(--transition-fast);
}

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

.message-model-label {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  color: var(--text-tertiary);
  padding: 0 6px;
  height: 28px;
  white-space: nowrap;
  user-select: none;
  margin-left: auto;
}

/* Version Navigation */
.message-version-nav {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  height: 28px;
  user-select: none;
}

.version-nav-btn {
  width: 28px;
  height: 28px;
  border: none;
  background: transparent;
  color: var(--text-tertiary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  transition: all var(--transition-fast);
  padding: 0;
}

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

.version-nav-btn:disabled {
  opacity: 0.3;
  cursor: default;
}

.version-nav-label {
  font-size: 11px;
  color: var(--text-tertiary);
  white-space: nowrap;
  min-width: 24px;
  text-align: center;
}

/* Message Edit Mode */
.message-wrapper.editing .message-actions {
  display: none;
}

.message-wrapper.editing .message {
  opacity: 0.6;
  border: 1px dashed var(--primary-color, #4fb6c2);
}

.message-edit-container {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.message-edit-textarea {
  display: block;
  width: 100%;
  min-width: 250px;
  min-height: 24px;
  padding: 4px 8px;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 14px;
  line-height: 1.6;
  resize: none;
  outline: none;
  overflow: hidden;
  box-sizing: border-box;
}

.message-edit-textarea:focus {
  outline: none;
}

.message-edit-buttons {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}

.message-edit-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  padding: 0;
  border: none;
  border-radius: 50%;
  font-size: 13px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.message-edit-cancel {
  background: rgba(0, 0, 0, 0.05);
  color: var(--text-secondary);
}

[data-theme="dark"] .message-edit-cancel {
  background: rgba(255, 255, 255, 0.1);
}

.message-edit-cancel:hover {
  background: rgba(0, 0, 0, 0.1);
  color: var(--text-primary);
}

[data-theme="dark"] .message-edit-cancel:hover {
  background: rgba(255, 255, 255, 0.15);
}

.message-edit-enhance {
  background: transparent;
  color: var(--text-tertiary);
}

.message-edit-enhance:hover {
  background: rgba(168, 85, 247, 0.12);
  color: #a855f7;
}

.message-edit-enhance.enhancing {
  color: #a855f7;
  animation: enhancePulse 1.2s ease-in-out infinite;
  pointer-events: none;
}

.message-edit-save {
  background: var(--primary-color);
  color: white;
}

.message-edit-save:hover {
  background: var(--primary-hover);
}

/* Generation stopped indicator */
.generation-stopped {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px dashed var(--border-color);
  font-size: 12px;
  color: var(--text-tertiary);
}

/* Message Content */
.message-content {
  word-wrap: break-word;
}

/* RTL language support */
.message-content[dir="rtl"] {
  text-align: right;
  direction: rtl;
}
.message-content[dir="rtl"] ul,
.message-content[dir="rtl"] ol {
  padding-right: 1.5em;
  padding-left: 0;
}
.message-content[dir="rtl"] blockquote {
  border-right: 3px solid var(--border-color);
  border-left: none;
  padding-right: 12px;
  padding-left: 0;
}
.message-content[dir="rtl"] code {
  direction: ltr;
  unicode-bidi: embed;
}

.message-content p {
  margin-bottom: 14px;
}

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

/* Headings in message content */
.message-content h1,
.message-content h2,
.message-content h3,
.message-content h4,
.message-content h5,
.message-content h6 {
  margin-top: 24px;
  margin-bottom: 14px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
}

.message-content h1:first-child,
.message-content h2:first-child,
.message-content h3:first-child,
.message-content h4:first-child,
.message-content h5:first-child,
.message-content h6:first-child {
  margin-top: 0;
}

.message-content h1 { font-size: 1.5em; }
.message-content h2 { font-size: 1.35em; }
.message-content h3 { font-size: 1.2em; }
.message-content h4 { font-size: 1.1em; }
.message-content h5 { font-size: 1em; }
.message-content h6 { font-size: 0.95em; color: var(--text-secondary); }

/* Links in message content */
.message-content a {
  color: var(--primary-color);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

.message-content a:hover {
  border-bottom-color: var(--primary-color);
}

.message-content a::after {
  content: '\f08e';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 0.7em;
  margin-left: 3px;
  opacity: 0.6;
  vertical-align: super;
}

/* Tables in message content */
.message-content table {
  width: auto;
  max-width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 15px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.message-content thead {
  background: var(--surface-elevated);
}

.message-content th,
.message-content td {
  border: 1px solid var(--border-color);
  padding: 10px 16px;
  text-align: left;
}

.message-content th {
  font-weight: 600;
  background: var(--surface-elevated);
  color: var(--text-primary);
  white-space: nowrap;
}

.message-content tbody tr:nth-child(odd) {
  background: var(--surface);
}

.message-content tbody tr:nth-child(even) {
  background: var(--surface-hover);
}

.message-content tbody tr:hover {
  background: rgba(79, 182, 194, 0.1);
}

.message-content tbody td {
  white-space: normal;
  word-wrap: break-word;
  color: var(--text-secondary);
}

.code-block-wrapper {
  position: relative;
  margin: 12px 0;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.code-lang-label {
  position: absolute;
  top: 0;
  right: 8px;
  background: rgba(0, 0, 0, 0.5);
  color: white;
  padding: 2px 8px;
  font-size: 11px;
  border-radius: 0 0 4px 4px;
}

.code-block {
  background: #1e293b;
  padding: 16px;
  overflow-x: auto;
  font-family: 'Monaco', 'Menlo', monospace;
  font-size: 14px;
  line-height: 1.55;
  color: #e2e8f0;
}

.inline-code {
  background: var(--surface);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: 'Monaco', 'Menlo', monospace;
  font-size: 0.9em;
  color: var(--primary-color);
}

/* Math blocks (KaTeX) */
.math-block {
  overflow-x: auto;
  padding: 16px 12px;
  margin: 12px 0;
  background: var(--surface);
  border-radius: var(--radius-md);
  text-align: center;
}

.math-inline {
  padding: 0 2px;
}

.math-error {
  font-family: 'Monaco', 'Menlo', monospace;
  font-size: 0.9em;
  color: var(--text-secondary);
}

/* Mermaid Diagrams */
.mermaid-wrapper {
  margin: 16px 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border-color);
  position: relative;
}

/* Maximize button - hidden by default, shows on hover */
.mermaid-maximize-btn {
  position: absolute;
  top: 44px;
  right: 8px;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: var(--radius-md);
  background: var(--surface-elevated);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  opacity: 0;
  transition: opacity 0.2s ease, background 0.2s ease, color 0.2s ease;
  z-index: 10;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.mermaid-wrapper:hover .mermaid-maximize-btn {
  opacity: 1;
}

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

/* Fullscreen modal */
.mermaid-fullscreen-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.9);
  z-index: 10000;
  display: flex;
  flex-direction: column;
  animation: mermaidModalFadeIn 0.2s ease;
}

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

.mermaid-fullscreen-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  background: rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.mermaid-fullscreen-title {
  display: flex;
  align-items: center;
  gap: 10px;
  color: white;
  font-size: 14px;
  font-weight: 500;
}

.mermaid-fullscreen-title i {
  color: var(--primary-color);
}

.mermaid-fullscreen-close {
  width: 36px;
  height: 36px;
  border: none;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.1);
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: background 0.2s ease;
}

.mermaid-fullscreen-close:hover {
  background: rgba(255, 255, 255, 0.2);
}

.mermaid-fullscreen-content {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  overflow: auto;
}

.mermaid-fullscreen-content svg {
  max-width: 95vw;
  max-height: 85vh;
  width: auto;
  height: auto;
  background: white;
  border-radius: var(--radius-lg);
  padding: 20px;
}

.mermaid-label {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--surface-elevated);
  border-bottom: 1px solid var(--border-color);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
}

.mermaid-label i {
  color: var(--primary-color);
}

.mermaid-container {
  padding: 16px;
  min-height: 100px;
  max-height: 75vh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: auto;
}

.mermaid-container svg {
  min-width: 300px;
  min-height: 150px;
  max-width: 100%;
  max-height: 70vh;
  height: auto;
  width: auto;
}

/* Ensure text is readable */
.mermaid-container svg text {
  font-size: 14px !important;
}

.mermaid-container svg .nodeLabel {
  font-size: 13px !important;
}

/* Mermaid internal element scaling */
.mermaid-container .flowchart,
.mermaid-container .sequenceDiagram,
.mermaid-container .stateDiagram,
.mermaid-container .er,
.mermaid-container .journey,
.mermaid-container .gantt,
.mermaid-container .pie,
.mermaid-container .mindmap {
  max-width: 100%;
}

.mermaid-loading {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-tertiary);
  font-size: 13px;
}

.mermaid-loading i {
  color: var(--primary-color);
}

.mermaid-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px;
  color: #e74c3c;
  text-align: center;
}

.mermaid-error i:first-child {
  font-size: 24px;
  margin-bottom: 4px;
}

.mermaid-error small {
  font-size: 11px;
  color: var(--text-tertiary);
  max-width: 300px;
  word-break: break-word;
}

.mermaid-fix-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-top: 10px;
  padding: 5px 12px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.1s ease;
}

.mermaid-fix-btn:hover:not(:disabled) {
  background: var(--primary-hover);
  transform: translateY(-1px);
}

.mermaid-fix-btn:active:not(:disabled) {
  background: var(--primary-active);
  transform: translateY(0);
}

.mermaid-fix-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.mermaid-fix-btn i {
  font-size: 10px;
  color: inherit;
}

.mermaid-source {
  border-top: 1px solid var(--border-color);
}

.mermaid-source summary {
  padding: 8px 12px;
  font-size: 12px;
  color: var(--text-tertiary);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  user-select: none;
}

.mermaid-source summary:hover {
  background: var(--surface-elevated);
  color: var(--text-secondary);
}

.mermaid-source summary i {
  font-size: 11px;
}

.mermaid-code {
  margin: 0;
  padding: 12px;
  background: #1e293b;
  overflow-x: auto;
  font-family: 'Monaco', 'Menlo', monospace;
  font-size: 12px;
  line-height: 1.5;
  color: #e2e8f0;
}

.mermaid-code code {
  color: inherit;
}

.mermaid-streaming .mermaid-container {
  opacity: 0.7;
}

.mermaid-streaming .mermaid-loading::after {
  content: ' (streaming...)';
}

/* Blockquotes */
.message-content blockquote {
  border-left: 4px solid var(--primary-color);
  margin: 12px 0;
  padding: 8px 16px;
  background: var(--surface);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--text-secondary);
}

.message-content blockquote p {
  margin: 0;
}

.message-list {
  margin: 8px 0;
  padding-left: 20px;
}

ul.message-list {
  list-style-type: disc;
}

ol.message-list {
  list-style-type: decimal;
}

.message-list li {
  margin-bottom: 4px;
}

/* Numbered items - use data-num attribute to preserve original numbering across gaps */
.numbered-item {
  position: relative;
  padding-left: 28px;
  margin: 8px 0;
}

.numbered-item::before {
  content: attr(data-num) ".";
  position: absolute;
  left: 0;
  font-weight: 600;
  color: var(--text-primary);
}

/* MCP Tool Notification */
.mcp-tool-notification {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  margin: 8px 0;
  font-size: 13px;
  color: var(--text-secondary);
  background-color: var(--surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--primary-color);
  animation: mcpSlideIn 0.2s ease-out;
  width: 100%;
}

@keyframes mcpSlideIn {
  from {
    opacity: 0;
    transform: translateX(-10px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.mcp-tool-icon {
  color: var(--primary-color);
  font-size: 16px;
}

.mcp-tool-text {
  flex: 1;
  font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
  font-size: 12px;
}

.mcp-tool-spinner {
  color: var(--primary-color);
  font-size: 14px;
}

.mcp-tool-notification.mcp-tool-success {
  border-left-color: #10b981;
}

.mcp-tool-notification.mcp-tool-success .mcp-tool-icon,
.mcp-tool-notification.mcp-tool-success .mcp-tool-spinner {
  color: #10b981;
}

.mcp-tool-notification.mcp-tool-error {
  border-left-color: #ef4444;
}

.mcp-tool-notification.mcp-tool-error .mcp-tool-icon,
.mcp-tool-notification.mcp-tool-error .mcp-tool-spinner {
  color: #ef4444;
}

/* Typing Indicator */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0;
  color: var(--text-secondary);
  font-size: 15px;
  max-width: 800px;
  width: 100%;
  margin: 0 auto;
}

.typing-text {
  opacity: 0.8;
}

.typing-dots {
  display: flex;
  gap: 4px;
}

.typing-dot {
  width: 7px;
  height: 7px;
  background: var(--primary-color);
  border-radius: 50%;
  animation: typing-bounce 1.4s infinite;
}

.typing-dot:nth-child(2) {
  animation-delay: 0.2s;
}

.typing-dot:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes typing-bounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
  30% { transform: translateY(-8px); opacity: 1; }
}

/* =============================================================================
   CHAT INPUT
   ============================================================================= */
.chat-input-container {
  padding: 0 16px 16px;
  background: transparent;
  max-width: 832px;
  margin: 0 auto;
  width: 100%;
}

/* Edit mode banner — shown above the input box when editing a previous message */
.edit-mode-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 12px;
  margin-bottom: 8px;
  background: var(--primary-color-10, rgba(79, 182, 194, 0.1));
  border: 1px solid var(--primary-color, #4fb6c2);
  border-radius: var(--radius-md, 8px);
  font-size: 0.82rem;
  color: var(--primary-color, #4fb6c2);
}

.edit-mode-banner.hidden {
  display: none;
}

.edit-mode-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
}

.edit-mode-label i {
  font-size: 0.78rem;
}

.edit-mode-cancel {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 2px 6px;
  border-radius: var(--radius-sm, 4px);
  font-size: 0.85rem;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.edit-mode-cancel:hover {
  background: var(--surface-hover);
  color: var(--text-primary);
}

.chat-input-box {
  background: var(--surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.chat-input-box.edit-mode {
  border-color: var(--primary-color, #4fb6c2);
  box-shadow: 0 0 0 3px rgba(79, 182, 194, 0.15);
}

/* Retry mode — input bar repurposed for regeneration */
.retry-mode-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 12px;
  margin-bottom: 8px;
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.4);
  border-radius: var(--radius-md, 8px);
  font-size: 0.82rem;
  color: rgb(99, 102, 241);
}

.retry-mode-banner.hidden {
  display: none;
}

.retry-mode-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
}

.retry-mode-label i {
  font-size: 0.78rem;
}

.retry-mode-cancel {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 2px 6px;
  border-radius: var(--radius-sm, 4px);
  font-size: 0.85rem;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.retry-mode-cancel:hover {
  background: var(--surface-hover);
  color: var(--text-primary);
}

.chat-input-box.retry-mode {
  border-color: rgba(99, 102, 241, 0.4);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.chat-input-box.retry-mode .send-btn {
  background: rgb(99, 102, 241);
}

.chat-input-box.retry-mode .send-btn:hover {
  background: rgb(79, 82, 221);
}

/* Highlight the message being retried */
.message-wrapper.retrying {
  outline: 2px solid rgba(99, 102, 241, 0.3);
  outline-offset: 4px;
  border-radius: var(--radius-md, 8px);
}

.chat-input-box:focus-within {
  border-color: var(--primary-color);
  box-shadow: 0 2px 16px rgba(79, 182, 194, 0.12);
}

/* ===== INLINE INPUT ROW (textarea + attach button) ===== */
.chat-input-row {
  display: flex;
  align-items: center;
  gap: 0;
}

.attach-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  min-width: 34px;
  height: 34px;
  margin: 2px 0 2px 6px;
  border: none;
  background: transparent;
  color: var(--text-tertiary);
  cursor: pointer;
  border-radius: 50%;
  font-size: 16px;
  transition: all 0.15s ease;
  flex-shrink: 0;
}

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

.attach-btn.has-attachments {
  color: var(--primary-color);
  background: rgba(79, 182, 194, 0.1);
}

/* Prompt Enhance (Magic Wand) Button */
.enhance-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  min-width: 34px;
  height: 34px;
  margin: 2px 0 2px 0;
  border: none;
  background: transparent;
  color: var(--text-tertiary);
  cursor: pointer;
  border-radius: 50%;
  font-size: 15px;
  transition: all 0.15s ease;
  flex-shrink: 0;
  position: relative;
}

.enhance-btn:hover {
  background: var(--surface-hover, var(--surface));
  color: #a855f7;
}

/* Enhance History Navigation Buttons */
.enhance-nav-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  min-width: 24px;
  height: 24px;
  margin: 5px 0;
  border: none;
  background: rgba(168, 85, 247, 0.10);
  color: #a855f7;
  cursor: pointer;
  border-radius: 50%;
  font-size: 11px;
  transition: all 0.15s ease;
  flex-shrink: 0;
}

.enhance-nav-btn:hover {
  background: rgba(168, 85, 247, 0.22);
  color: #9333ea;
}

.enhance-nav-btn:disabled {
  opacity: 0.35;
  cursor: default;
  pointer-events: none;
}

/* Edit-mode enhance nav */
.message-edit-nav-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  min-width: 24px;
  height: 24px;
  border: none;
  background: rgba(168, 85, 247, 0.10);
  color: #a855f7;
  cursor: pointer;
  border-radius: 50%;
  font-size: 10px;
  transition: all 0.15s ease;
}

.message-edit-nav-btn:hover {
  background: rgba(168, 85, 247, 0.22);
  color: #9333ea;
}

.message-edit-nav-btn:disabled {
  opacity: 0.35;
  cursor: default;
  pointer-events: none;
}

.enhance-btn.enhancing {
  color: #a855f7;
  animation: enhancePulse 1.2s ease-in-out infinite;
  pointer-events: none;
}

@keyframes enhancePulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.1); }
}

#chat-input {
  width: 100%;
  padding: 14px 16px 14px 8px;
  border: none;
  background: transparent;
  font-size: 16px;
  resize: none;
  max-height: 200px;
  color: var(--text-primary);
  font-family: inherit;
}

#chat-input:focus {
  outline: none;
}

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

/* ===== CLEAN ACTION BAR ===== */
.chat-action-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px;
  gap: 8px;
  border-top: 1px solid var(--border-color);
  position: relative;
}

.action-row {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

/* Hidden on desktop, shown on mobile via media query */
.action-expand-btn {
  display: none !important;
}

/* On desktop, popup wrapper is transparent — items flow inline */
.action-expand-popup {
  display: contents;
}

/* Backdrop hidden on desktop */
.action-expand-backdrop {
  display: none;
}

.action-item {
  position: relative;
}

/* Action Pills - Uniform icon buttons */
.action-pill {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 6px 10px;
  border: 1px solid var(--border-color);
  background: transparent;
  border-radius: 20px;
  color: var(--text-secondary);
  font-size: 12px;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
  position: relative;
}

.action-pill:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.action-pill i {
  font-size: 13px;
}

.action-pill.icon-only {
  padding: 7px 9px;
  min-width: 34px;
  height: 34px;
}

.action-pill.icon-only .pill-label,
.action-pill.icon-only .pill-chevron {
  display: none;
}

.action-pill.icon-only i {
  font-size: 14px;
}

.pill-label {
  font-weight: 500;
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pill-badge {
  display: none;
}

.pill-badge.has-count {
  display: none;
}

/* Active state — solid fill for buttons with active selections */
.action-pill.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.action-pill.active:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
}

.pill-chevron {
  font-size: 10px;
  opacity: 0.6;
  margin-left: 2px;
}

/* RAG Pill States — uses shared .action-pill.active */

/* Model Pill */
.model-pill {
  background: transparent;
}

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

.perf-pill:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

/* Send Button */
.send-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  background: var(--primary-color);
  border-radius: 50%;
  color: white;
  cursor: pointer;
  transition: all 0.15s ease;
  flex-shrink: 0;
}

.send-btn:hover {
  background: var(--primary-hover);
  transform: scale(1.05);
}

.send-btn i {
  font-size: 14px;
}

.send-btn.generating {
  background: #ef4444;
}

.send-btn.generating:hover {
  background: #dc2626;
}

/* ===== ACTION DROPDOWNS ===== */
.action-dropdown {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 0;
  min-width: 240px;
  max-height: 320px;
  background: var(--background);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: 100;
  overflow: hidden;
}

.dropdown-body {
  padding: 12px;
}

.dropdown-search {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: var(--surface);
  border-bottom: 1px solid var(--border-color);
}

.dropdown-search > i {
  color: var(--text-tertiary);
  font-size: 12px;
}

.dropdown-search input {
  flex: 1;
  min-width: 0;
  border: none;
  background: transparent;
  font-size: 13px;
  color: var(--text-primary);
  outline: none;
}

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

.dropdown-search-actions {
  display: flex;
  gap: 2px;
}

.search-action {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border: none;
  background: transparent;
  color: var(--text-tertiary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
}

.search-action:hover {
  background: var(--surface-hover);
  color: var(--primary-color);
}

.search-action i {
  font-size: 11px;
}

.dropdown-list {
  max-height: 250px;
  overflow-y: auto;
  padding: 6px;
}

.dropdown-loading {
  padding: 20px;
  text-align: center;
  color: var(--text-tertiary);
  font-size: 13px;
}

.dropdown-footer {
  display: flex;
  justify-content: flex-end;
  padding: 8px 12px;
  border-top: 1px solid var(--border-color);
}

.footer-action {
  font-size: 11px;
  font-weight: 500;
  color: var(--primary-color);
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
}

.footer-action:hover {
  background: rgba(79, 182, 194, 0.1);
}

.dropdown-empty {
  padding: 16px;
  text-align: center;
  color: var(--text-tertiary);
  font-size: 13px;
}

/* Specific Dropdown Styles */
.model-dropdown {
  min-width: 260px;
}

.rag-dropdown {
  width: 280px;
  max-height: 450px;
  display: flex;
  flex-direction: column;
}

.rag-dropdown .dropdown-search {
  flex-shrink: 0;
}

.rag-dropdown .rag-collection-list {
  flex: 1;
  min-height: 0;
  max-height: none;
}

.tools-dropdown {
  min-width: 280px;
}

.perf-dropdown {
  min-width: 290px;
  max-height: none;
  overflow: visible;
}

.perf-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.perf-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.perf-row label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
}

.perf-label {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.perf-help {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  color: var(--text-tertiary);
  font-size: 9px;
  font-weight: 700;
  cursor: help;
  background: var(--surface);
  position: relative;
}

.perf-help:hover {
  color: var(--text-tertiary);
  border-color: var(--border-color);
}

.perf-help::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--background);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 6px 10px;
  font-size: 11px;
  font-weight: 400;
  line-height: 1.4;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
  box-shadow: var(--shadow-lg);
  z-index: 200;
}

.perf-help::before {
  content: "";
  position: absolute;
  bottom: calc(100% + 2px);
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: var(--border-color);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
  z-index: 201;
}

.perf-help:hover::after,
.perf-help:hover::before {
  opacity: 1;
}

.perf-row input[type="range"] {
  width: 100%;
}

.perf-row input[type="number"] {
  width: 100%;
  padding: 5px 8px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--surface);
  color: var(--text-primary);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.perf-row .value-display {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  min-width: 28px;
  text-align: right;
}

.perf-footer {
  padding: 4px 0 0;
  border-top: none;
  justify-content: center;
}

/* Perf Auto-tune Header */
.perf-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 2px;
}

.perf-auto-tune-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--surface);
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}
.perf-auto-tune-btn:hover {
  border-color: #a855f7;
  background: rgba(168, 85, 247, 0.1);
  color: #a855f7;
}
.perf-auto-tune-btn.active {
  border-color: #a855f7;
  background: rgba(168, 85, 247, 0.15);
  color: #a855f7;
}
.perf-auto-tune-btn i {
  font-size: 10px;
}

/* Auto-tune explanation line */
.perf-explanation {
  font-size: 10px;
  line-height: 1.4;
  color: var(--text-tertiary);
  padding: 4px 2px 2px;
  margin-bottom: 2px;
  white-space: normal;
  word-break: break-word;
}
.perf-explanation i {
  margin-right: 4px;
  font-size: 9px;
  color: var(--accent);
}

/* Modified dot indicator */
/* Presets bar */
.perf-presets {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  padding-top: 2px;
  border-top: 1px solid var(--border-color);
}

/* Thinking toggle button — inherits base .action-pill styling for both states */
.perf-preset-chip {
  padding: 5px 2px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--surface);
  color: var(--text-secondary);
  font-size: 10.5px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  white-space: nowrap;
  letter-spacing: 0.1px;
}
.perf-preset-chip:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(79, 182, 194, 0.06);
}
.perf-preset-chip.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* Temperature disabled state for reasoning models */
.perf-row-disabled {
  opacity: 0.55;
}
.perf-row-disabled input[type="range"] {
  pointer-events: none;
  filter: grayscale(0.6);
}
.perf-row-disabled input[type="number"] {
  pointer-events: none;
  filter: grayscale(0.6);
  color: var(--text-muted);
}
.perf-disabled-tag {
  display: inline-block;
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--accent);
  background: rgba(79, 182, 194, 0.1);
  border: 1px solid rgba(79, 182, 194, 0.25);
  border-radius: 3px;
  padding: 0 4px;
  margin-left: 4px;
  vertical-align: middle;
  line-height: 15px;
}

/* Model Items */
.model-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.model-item:hover {
  background: var(--surface);
}

.model-item.active {
  background: rgba(79, 182, 194, 0.1);
}

.model-item-radio {
  width: 16px;
  height: 16px;
  border: 2px solid var(--border-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.model-item.active .model-item-radio {
  border-color: var(--primary-color);
  background: var(--primary-color);
}

.model-item.active .model-item-radio::after {
  content: '';
  width: 6px;
  height: 6px;
  background: white;
  border-radius: 50%;
}

.model-item-info {
  flex: 1;
}

.model-item-name {
  font-size: 13px;
  font-weight: 500;
}

.model-item-provider {
  font-size: 11px;
  color: var(--text-tertiary);
}

/* MCP Tool Items */
.mcp-server-group {
  padding: 8px 12px 4px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.mcp-tool-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  cursor: pointer;
  transition: background var(--transition-fast);
  /* Prevent text selection on rapid taps */
  user-select: none;
  -webkit-user-select: none;
}

.mcp-tool-item.hidden {
  display: none;
}

.mcp-tool-item:hover {
  background: var(--surface);
}

/* Touch-friendly active state for mobile */
.mcp-tool-item:active {
  background: var(--surface);
}

.mcp-tool-checkbox {
  width: 16px;
  height: 16px;
  border: 2px solid var(--border-color);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
  transition: all var(--transition-fast);
}

.mcp-tool-item.active .mcp-tool-checkbox {
  background: var(--primary-color);
  border-color: var(--primary-color);
}

.mcp-tool-checkbox svg {
  width: 10px;
  height: 10px;
  color: white;
  opacity: 0;
}

.mcp-tool-item.active .mcp-tool-checkbox svg {
  opacity: 1;
}

.mcp-tool-info {
  flex: 1;
}

.mcp-tool-name {
  font-size: 12px;
  font-weight: 600;
}

.mcp-tool-desc {
  font-size: 11px;
  color: var(--text-tertiary);
  margin-top: 2px;
}

/* =============================================================================
   MODALS
   ============================================================================= */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-content {
  background: var(--surface-elevated);
  border-radius: var(--radius-xl);
  width: 90%;
  max-width: 600px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
}

/* Settings Modal - larger with sidebar */
.modal-content.settings-modal {
  max-width: 800px;
  width: 95%;
  height: 80vh;
  max-height: 700px;
  padding: 0;
  overflow: hidden;
}

/* Mobile-only elements - hidden on desktop */
.settings-mobile-back {
  display: none !important;
}

.settings-mobile-save {
  display: none !important;
}

.settings-layout {
  display: flex;
  height: 100%;
}

.settings-sidebar {
  width: 220px;
  background: var(--background);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.settings-sidebar-header {
  padding: 16px;
  display: flex;
  align-items: center;
}

.settings-back-btn {
  width: 36px;
  height: 36px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: all var(--transition-fast);
}

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

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

.settings-nav-item {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-align: left;
  margin-bottom: 4px;
}

.settings-nav-item i {
  width: 18px;
  text-align: center;
  font-size: 14px;
}

.settings-nav-item .nav-icon {
  width: 18px;
  height: 18px;
  object-fit: contain;
  flex-shrink: 0;
}

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

.settings-nav-item.active {
  background: var(--surface);
  color: var(--text-primary);
}

.settings-sidebar-footer {
  padding: 16px;
  border-top: 1px solid var(--border-color);
}

.settings-save-btn {
  width: 100%;
  padding: 10px 16px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition-fast);
}

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

.settings-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow: hidden;
}

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

.settings-content-header h2 {
  font-size: 18px;
  font-weight: 600;
  margin: 0;
}

.settings-content-body {
  flex: 1;
  padding: 24px;
  overflow-y: auto;
  overflow-x: hidden;
  max-width: 100%;
  box-sizing: border-box;
}

.modal-small {
  max-width: 400px;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
  font-size: 18px;
  font-weight: 600;
}

.modal-close {
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.modal-body {
  padding: 20px;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* Settings Tabs */
.settings-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
  flex-wrap: wrap;
}

.settings-tab {
  padding: 8px 16px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.settings-tab:hover {
  background: var(--surface);
}

.settings-tab.active {
  background: var(--primary-color);
  color: white;
}

.settings-panel {
  display: none;
}

.settings-panel.active {
  display: block;
  max-width: 100%;
  overflow-x: hidden;
  word-wrap: break-word;
}

/* Form Elements */
.form-group {
  margin-bottom: 16px;
  max-width: 100%;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.form-group input:not([type="range"]),
.form-group select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 14px;
  background: var(--surface);
  color: var(--text-primary);
  transition: border-color var(--transition-fast);
  box-sizing: border-box;
  max-width: 100%;
}

.form-group input:not([type="range"]):focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary-color);
}

/* System prompt textarea */
.system-prompt-textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 13px;
  font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Consolas', monospace;
  line-height: 1.5;
  background: var(--surface);
  color: var(--text-primary);
  resize: vertical;
  min-height: 200px;
  transition: border-color var(--transition-fast);
  box-sizing: border-box;
  max-width: 100%;
}

.system-prompt-textarea:focus {
  outline: none;
  border-color: var(--primary-color);
}

/* Message prefix textarea */
.message-prefix-textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 13px;
  font-family: inherit;
  line-height: 1.5;
  background: var(--surface);
  color: var(--text-primary);
  resize: vertical;
  min-height: 80px;
  transition: border-color var(--transition-fast);
  box-sizing: border-box;
  max-width: 100%;
}

.message-prefix-textarea:focus {
  outline: none;
  border-color: var(--primary-color);
}

.form-hint {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 6px;
  line-height: 1.4;
}

.form-hint-inline {
  font-size: 11px;
  color: var(--text-secondary);
  font-weight: normal;
}

/* Input with action button (refresh) */
.input-with-action {
  display: flex;
  gap: 8px;
  align-items: center;
}

.input-with-action input,
.input-with-action select {
  flex: 1;
  min-width: 0;
}

.refresh-btn {
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--surface);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

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

.refresh-btn.loading i {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.test-btn,
.add-btn {
  padding: 10px 16px;
  border: 1px solid var(--primary-color);
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--primary-color);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.test-btn:hover,
.add-btn:hover {
  background: var(--primary-color);
  color: white;
}

.default-provider {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
}

.primary-btn {
  padding: 10px 20px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition-fast);
}

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

.secondary-btn {
  padding: 10px 20px;
  background: var(--surface);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 14px;
  cursor: pointer;
}

.danger-btn {
  padding: 10px 20px;
  background: #ef4444;
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
}

.danger-btn:hover {
  background: #dc2626;
}

/* MCP Server List in Settings */
.mcp-servers-list {
  margin-bottom: 20px;
}

.mcp-server-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px;
  background: var(--surface);
  border-radius: var(--radius-md);
  margin-bottom: 8px;
}

.mcp-server-info {
  flex: 1;
}

.mcp-server-name {
  font-weight: 500;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.mcp-server-status {
  font-size: 11px;
  font-weight: 400;
}

.mcp-server-status.testing {
  color: var(--text-tertiary);
}

.mcp-server-status.success {
  color: #10b981;
}

.mcp-server-status.error {
  color: #ef4444;
}

.mcp-server-url {
  font-size: 12px;
  color: var(--text-tertiary);
}
.mcp-auth-label {
  color: var(--text-secondary);
  font-style: italic;
}

.mcp-server-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mcp-server-test {
  width: 28px;
  height: 28px;
  border: none;
  background: transparent;
  color: var(--text-tertiary);
  cursor: pointer;
  border-radius: var(--radius-sm);
}

.mcp-server-test:hover {
  color: var(--primary-color);
  background: rgba(79, 182, 194, 0.1);
}

.mcp-server-test:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.mcp-server-delete {
  width: 28px;
  height: 28px;
  border: none;
  background: transparent;
  color: var(--text-tertiary);
  cursor: pointer;
  border-radius: var(--radius-sm);
}

.mcp-server-delete:hover {
  color: #ef4444;
  background: rgba(239, 68, 68, 0.1);
}

/* Toggle Switch */
.mcp-toggle-switch {
  position: relative;
  display: inline-block;
  width: 40px;
  height: 22px;
  background: none;
  border: none;
  padding: 0;
  margin: 0;
  overflow: hidden;
}

.mcp-toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}

.mcp-toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--border-color);
  transition: .3s;
  border-radius: 22px;
}

.mcp-toggle-slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: .3s;
  border-radius: 50%;
  box-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

/* Explicitly hide any other pseudo-elements */
.mcp-toggle-switch::before,
.mcp-toggle-switch::after,
.mcp-toggle-slider::after {
  content: none !important;
  display: none !important;
}

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

input:checked + .mcp-toggle-slider:before {
  transform: translateX(18px);
}

.add-mcp-server {
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}

.add-mcp-server h4 {
  font-size: 14px;
  margin-bottom: 12px;
}

/* =============================================================================
   SKILLS
   ============================================================================= */
.skills-list {
  margin-bottom: 20px;
}

.skills-list:empty + .add-skill-form {
  margin-top: 0;
}

.skill-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px;
  background: var(--surface);
  border-radius: var(--radius-md);
  margin-bottom: 8px;
  transition: opacity 0.2s;
}

.skill-item.inactive {
  opacity: 0.55;
}

.skill-item-toggle {
  margin-top: 2px;
  flex-shrink: 0;
}

.skill-item-toggle input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--primary-color);
  cursor: pointer;
}

.skill-item-info {
  flex: 1;
  min-width: 0;
}

.skill-item-name {
  font-weight: 500;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.skill-item-name .skill-priority-badge {
  font-size: 10px;
  font-weight: 400;
  color: var(--text-tertiary);
  background: var(--bg);
  padding: 1px 5px;
  border-radius: var(--radius-sm);
}

.skill-item-description {
  font-size: 12px;
  color: var(--text-tertiary);
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.skill-item-preview {
  font-size: 11px;
  color: var(--text-tertiary);
  margin-top: 4px;
  font-style: italic;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 400px;
}

.skill-item-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}

.skill-item-actions button {
  width: 28px;
  height: 28px;
  border: none;
  background: transparent;
  color: var(--text-tertiary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
}

.skill-item-actions button:hover {
  color: var(--primary-color);
  background: rgba(79, 182, 194, 0.1);
}

.skill-item-actions button.skill-delete-btn:hover {
  color: #ef4444;
  background: rgba(239, 68, 68, 0.1);
}

.add-skill-form {
  background: var(--surface);
  border-radius: var(--radius-md);
  padding: 16px;
}

.add-skill-form h4 {
  font-size: 14px;
  margin-bottom: 12px;
}

.skill-content-textarea {
  width: 100%;
  min-height: 180px;
  padding: 10px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text-primary);
  font-family: 'Monaco', 'Menlo', 'Consolas', monospace;
  font-size: 12.5px;
  line-height: 1.5;
  resize: vertical;
  box-sizing: border-box;
}

.skill-content-textarea:focus {
  outline: none;
  border-color: var(--primary-color);
}

.skill-content-counter {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  color: var(--text-tertiary);
  margin-top: 4px;
}

.skill-content-counter.near-limit {
  color: #f59e0b;
}

.skill-content-counter.at-limit {
  color: #ef4444;
  font-weight: 600;
}

.skill-budget-indicator {
  margin-left: auto;
  font-size: 11px;
  color: var(--text-tertiary);
}

.skill-budget-indicator.warn {
  color: #f59e0b;
}

.skill-budget-indicator.over {
  color: #ef4444;
  font-weight: 600;
}

.skill-form-actions {
  display: flex;
  align-items: flex-end;
  gap: 12px;
  justify-content: space-between;
}

.skill-form-actions .form-group {
  width: 80px;
  margin-bottom: 0;
}

.skill-form-actions #skill-priority {
  height: 42px;
  box-sizing: border-box;
}

.skill-form-actions .add-btn,
.skill-form-actions .secondary-btn {
  height: 42px;
  padding: 0 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
}

.skill-action-buttons {
  display: flex;
  gap: 8px;
  align-items: center;
}

.skill-import-export {
  margin-top: 4px;
}

.skill-import-export h4 {
  font-size: 14px;
  margin-bottom: 4px;
}

.skills-pill:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

/* Skills dropdown in chat action bar */
.skills-dropdown {
  min-width: 280px;
}

.skills-chat-list {
  max-height: 250px;
  overflow-y: auto;
}

/* Skills items — MCP tool checkbox style */
.skill-tool-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  cursor: pointer;
  transition: background var(--transition-fast);
  user-select: none;
  -webkit-user-select: none;
}

.skill-tool-item.hidden {
  display: none;
}

.skill-tool-item:hover {
  background: var(--surface);
}

.skill-tool-item:active {
  background: var(--surface);
}

.skill-tool-checkbox {
  width: 16px;
  height: 16px;
  border: 2px solid var(--border-color);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.skill-tool-item.active .skill-tool-checkbox {
  background: var(--primary-color);
  border-color: var(--primary-color);
}

.skill-tool-checkbox svg {
  width: 10px;
  height: 10px;
  color: white;
  opacity: 0;
}

.skill-tool-item.active .skill-tool-checkbox svg {
  opacity: 1;
}

.skill-tool-info {
  flex: 1;
  min-width: 0;
}

.skill-tool-name {
  font-size: 12px;
  font-weight: 600;
}

.skill-tool-desc {
  font-size: 11px;
  color: var(--text-tertiary);
  margin-top: 2px;
}

.skills-footer .footer-action {
  display: flex;
  align-items: center;
  gap: 5px;
}

.dropdown-empty {
  text-align: center;
  color: var(--text-tertiary);
  padding: 16px 12px;
  font-size: 13px;
}

.empty-text {
  text-align: center;
  color: var(--text-tertiary);
  padding: 24px;
}

.delete-chat-title {
  font-style: italic;
  color: var(--text-secondary);
  margin-top: 8px;
}

/* =============================================================================
   TOAST NOTIFICATIONS
   ============================================================================= */
#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 12px 20px;
  background: var(--surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: 14px;
  animation: toast-in 0.3s ease;
}

.toast-success {
  border-left: 4px solid var(--primary-color);
}

.toast-error {
  border-left: 4px solid #ef4444;
}

.toast.fade-out {
  animation: toast-out 0.3s ease forwards;
}

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

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

/* =============================================================================
   RESPONSIVE
   ============================================================================= */

/* Mobile Sidebar Overlay */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 99;
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.sidebar-overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 100;
    transform: translateX(-100%);
    width: min(var(--sidebar-width), 85vw);
    box-shadow: var(--shadow-lg);
  }

  .sidebar:not(.collapsed) {
    transform: translateX(0);
  }

  .sidebar.collapsed {
    transform: translateX(-100%);
    width: 0;
  }

  /* Hide strip on mobile — use header hamburger instead */
  .sidebar-strip {
    display: none !important;
  }

  /* Show overlay element when sidebar is open on mobile (but only clickable when .visible) */
  .sidebar-overlay {
    display: block;
  }

  /* Show close button on mobile */
  .close-sidebar-btn {
    display: flex;
  }

  .message-wrapper {
    max-width: 95%;
  }

  .message {
    font-size: 15px;
    line-height: 1.65;
  }

  .quick-actions {
    flex-direction: column;
  }

  .quick-action {
    width: 100%;
    justify-content: center;
  }

  /* Adjust chat header for mobile */
  .chat-header {
    padding: 0 12px;
  }

  .chat-header h1 {
    font-size: 14px;
  }

  /* Adjust input area for mobile */
  .chat-input-container {
    padding: 0 12px 12px;
  }

  .attach-btn {
    width: 32px;
    min-width: 32px;
    height: 32px;
    font-size: 15px;
    margin: 2px 0 2px 4px;
  }

  /* Prevent auto-zoom on focus - must be 16px+ */
  #chat-input {
    font-size: 16px;
  }

  /* Mobile Action Bar */
  .chat-action-bar {
    padding: 8px;
  }

  .action-row {
    gap: 4px;
    flex-wrap: nowrap;
  }

  .action-pill {
    padding: 5px 8px;
    font-size: 11px;
  }

  .action-pill.icon-only {
    min-width: 30px;
    height: 30px;
    padding: 5px 7px;
  }

  .pill-label {
    max-width: 70px;
  }

  /* --- Mobile action bar collapse: hide icon-only toggles behind + --- */
  .action-expand-btn {
    display: flex !important;
  }

  /* Hide collapsible action items on mobile by default */
  .action-item.collapsible-action {
    display: none;
  }

  /* ---- Floating popup for collapsible actions ---- */
  .action-expand-popup {
    display: none;
    position: absolute;
    bottom: calc(100% + 8px);
    left: 8px;
    background: var(--surface-elevated, #fff);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.12);
    z-index: 100;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 6px;
    min-width: 160px;
    max-width: calc(100vw - 32px);
    animation: popupFadeIn 0.15s ease;
  }

  .action-expand-popup.open {
    display: flex;
  }

  /* Items inside popup are always visible (unless .hidden) */
  .action-expand-popup .action-item.collapsible-action {
    display: block;
  }

  .action-expand-popup .action-item.collapsible-action.hidden {
    display: none !important;
  }

  @keyframes popupFadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
  }

  /* Rotate the + to × when popup is open */
  .action-expand-btn.active i {
    transform: rotate(45deg);
  }

  .action-expand-btn i {
    transition: transform 0.2s ease;
  }

  /* Backdrop to close popup when tapping outside */
  .action-expand-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 99;
  }

  .action-expand-backdrop.open {
    display: block;
  }

  .send-btn {
    width: 32px;
    height: 32px;
  }

  /* Smaller buttons on mobile */
  .header-action-btn {
    width: 32px;
    height: 32px;
  }

  /* Settings modal fullscreen on mobile */
  .settings-modal {
    width: 100%;
    height: 100%;
    max-width: 100%;
    max-height: 100%;
    border-radius: 0;
  }

  /* ==========================================
     MOBILE SETTINGS - Sidebar slides like chat
     ========================================== */
  
  .settings-layout {
    position: relative;
    height: 100%;
    overflow: hidden;
  }

  /* Sidebar - full width, slides in/out */
  .settings-sidebar {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 20;
    background: var(--background);
    border-right: none;
    transform: translateX(0);
    transition: transform 0.3s ease;
  }

  /* When content is shown, sidebar slides completely out */
  .settings-layout.show-content .settings-sidebar {
    transform: translateX(-100%);
  }

  .settings-sidebar-header {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
  }

  .settings-sidebar-header::after {
    content: 'Settings';
    font-size: 18px;
    font-weight: 600;
    margin-left: 12px;
  }

  .settings-nav {
    padding: 8px 0;
    overflow-y: auto;
    flex: 1;
  }

  .settings-nav-item {
    padding: 16px 20px;
    font-size: 16px;
    border-radius: 0;
    margin-bottom: 0;
    border-bottom: 1px solid var(--border-color);
  }

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

  .settings-nav-item span {
    display: inline;
  }

  .settings-nav-item .nav-icon,
  .settings-nav-item i {
    width: 24px;
    height: 24px;
    font-size: 18px;
  }

  /* Arrow indicator on nav items */
  .settings-nav-item::after {
    content: '›';
    margin-left: auto;
    font-size: 20px;
    color: var(--text-tertiary);
  }

  .settings-sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border-color);
  }

  /* Content - always visible, full width */
  .settings-content {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    background: var(--background);
  }

  .settings-content-header {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 12px;
  }

  /* Show mobile back button */
  .settings-mobile-back {
    display: flex !important;
    width: 36px;
    height: 36px;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    color: var(--primary);
    font-size: 20px;
    cursor: pointer;
    border-radius: var(--radius-md);
    flex-shrink: 0;
  }

  .settings-mobile-back:hover {
    background: var(--surface);
  }

  .settings-content-header h2 {
    font-size: 18px;
    flex: 1;
  }

  .settings-content-body {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* Hide desktop save button in sidebar footer on mobile - we use the one in content */
  .settings-sidebar-footer .settings-save-btn {
    display: none;
  }

  /* Mobile save button at bottom of content */
  .settings-mobile-save {
    display: block !important;
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
    background: var(--background);
  }

  .settings-mobile-save .settings-save-btn {
    width: 100%;
    padding: 14px;
    font-size: 16px;
  }

  /* Form adjustments for mobile */
  .form-row {
    flex-direction: column;
    gap: 16px;
  }

  .form-group {
    width: 100%;
  }

  .form-group label {
    font-size: 15px;
    margin-bottom: 8px;
  }

  .form-group input:not([type="range"]),
  .form-group select,
  .form-group textarea {
    font-size: 16px;
    padding: 14px;
  }

  .form-hint {
    font-size: 13px;
    margin-top: 6px;
  }

  /* Quick models list adjustments */
  .quick-model-item {
    flex-wrap: wrap;
    gap: 8px;
  }

  .panel-description {
    font-size: 14px;
    margin-bottom: 16px;
  }

  .settings-divider {
    margin: 20px 0;
  }

  .settings-section-title {
    font-size: 12px;
    margin-bottom: 16px;
  }

  /* Test/Add buttons full width on mobile */
  .test-btn,
  .add-btn {
    width: 100%;
    padding: 14px;
    font-size: 15px;
    margin-top: 8px;
  }

  /* Center all action dropdowns on mobile screens using fixed positioning */
  .action-dropdown {
    position: fixed !important;
    left: 50% !important;
    right: auto !important;
    transform: translateX(-50%);
    bottom: auto !important;
    top: auto !important;
    /* Position above the input area - roughly 180px from bottom */
    bottom: 180px !important;
    min-width: min(300px, 90vw);
    max-width: 90vw;
  }

  /* Model dropdown positioning on mobile */
  .model-dropdown {
    min-width: min(280px, 90vw);
  }

  /* MCP tools dropdown positioning on mobile */
  .mcp-dropdown {
    min-width: min(300px, 90vw);
  }
  
  /* RAG dropdown positioning on mobile */
  .rag-dropdown {
    min-width: min(280px, 90vw);
  }
  
  /* Make all input dropdowns mobile-friendly */
  .input-dropdown {
    min-width: min(280px, 85vw);
    max-height: 50vh;
  }
  
  /* Larger touch targets for MCP tools on mobile */
  .mcp-tool-item {
    padding: 14px 12px;
  }
  
  .mcp-tool-checkbox {
    width: 20px;
    height: 20px;
  }

  /* Chat messages padding */
  .chat-messages {
    padding: 16px 12px;
  }

  /* Welcome screen adjustments */
  .welcome-screen h2 {
    font-size: 22px;
  }
}

/* Extra small screens */
@media (max-width: 480px) {
  .sidebar {
    width: 100vw;
  }

  .header-actions {
    gap: 4px;
  }

  .chat-input-left {
    gap: 4px;
  }

  .input-action-btn {
    padding: 6px 8px;
    font-size: 12px;
  }

  .model-display {
    max-width: 80px;
  }

  /* Smaller padding on very small screens */
  .settings-content-body {
    padding: 16px;
  }

  .settings-nav-item {
    padding: 14px 16px;
  }
}

/* Model Selector Grouping */
.model-group-header {
  padding: 8px 12px 4px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-tertiary);
  letter-spacing: 0.5px;
  background: var(--surface);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
}

/* Quick Models Settings Panel */
.panel-description {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.5;
}

.quick-models-list {
  margin-bottom: 20px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.quick-models-list .empty-state {
  padding: 24px;
  text-align: center;
  color: var(--text-tertiary);
  font-size: 13px;
}

.quick-model-item {
  display: flex;
  align-items: center;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-color);
  background: var(--background);
  cursor: grab;
  transition: all var(--transition-fast);
}

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

.quick-model-item:hover {
  background: var(--surface);
}

.quick-model-item.dragging {
  opacity: 0.5;
  cursor: grabbing;
}

.quick-model-item.drag-over {
  border-top: 2px solid var(--primary-color);
  margin-top: -1px;
}

.drag-handle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  color: var(--text-tertiary);
  margin-right: 10px;
  cursor: grab;
}

.quick-model-item:active .drag-handle {
  cursor: grabbing;
}

.quick-model-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
  flex: 1;
}

.quick-model-name {
  font-size: 13px;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.quick-model-provider {
  font-size: 11px;
  color: var(--text-tertiary);
}

.quick-model-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 12px;
}

.remove-quick-model {
  width: 28px;
  height: 28px;
  border: none;
  background: transparent;
  color: var(--text-tertiary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.remove-quick-model:hover {
  background: #ef4444;
  color: white;
}

.add-quick-model {
  padding: 16px;
  background: var(--surface);
  border-radius: var(--radius-md);
}

.add-quick-model h4 {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.form-row {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  flex-wrap: wrap;
  max-width: 100%;
}

.form-row .form-group {
  margin-bottom: 0;
  min-width: 0;
}

.form-row .form-group:first-child {
  flex: 1;
  min-width: 100px;
}

.form-row .flex-grow {
  flex: 1;
}

.form-row .add-btn {
  height: 38px;
  white-space: nowrap;
}

.add-quick-model .form-row .add-btn {
  margin-top: 24px;
}

.refresh-btn {
  height: 38px;
  width: 38px;
  padding: 0;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s, background 0.2s;
  flex-shrink: 0;
}

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

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

.refresh-btn.spinning {
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.add-quick-model .form-row .refresh-btn {
  margin-top: 24px;
}

/* =====================================================
   Embedding Models Panel Styles
   ===================================================== */

.embedding-models-list {
  margin-bottom: 20px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.embedding-models-list .empty-models-message {
  padding: 24px;
  text-align: center;
  color: var(--text-tertiary);
  font-size: 13px;
}

.embedding-model-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-color);
  background: var(--background);
  transition: all var(--transition-fast);
}

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

.embedding-model-item:hover {
  background: var(--surface);
}

.embedding-model-item.active {
  background: color-mix(in srgb, var(--accent) 6%, var(--background));
}

.embedding-model-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
  flex: 1;
}

.embedding-model-name {
  font-weight: 500;
  font-size: 13px;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.embedding-model-meta {
  font-size: 11px;
  color: var(--text-secondary);
}

.embedding-model-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.embedding-model-active-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  padding: 3px 10px;
  border-radius: 12px;
}

.embedding-model-activate-btn {
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s;
}

.embedding-model-activate-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}

.embedding-model-remove-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 4px;
  font-size: 12px;
  opacity: 0.5;
  transition: all 0.15s;
}

.embedding-model-remove-btn:hover {
  opacity: 1;
  color: #e74c3c;
  background: rgba(231, 76, 60, 0.1);
}

/* Add Embedding Model form */
.add-embedding-model {
  margin-top: 16px;
  padding: 16px;
  background: var(--surface);
  border-radius: var(--radius-md);
}

.add-embedding-model h4 {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.add-embedding-model .form-row {
  gap: 12px;
  align-items: flex-start;
}

.add-embedding-model .form-row .form-group {
  flex: 1;
}

.add-embedding-model .form-row .form-group.dimensions-group {
  flex: 0 0 120px;
}

.add-embedding-model .embedding-secondary-row {
  align-items: flex-end;
  margin-top: 10px;
}

.add-embedding-model .embedding-add-btn {
  align-self: flex-end;
  margin-top: 24px;
}

.add-embedding-model .embedding-dimensions-hint {
  margin-top: 4px;
  margin-bottom: 0;
}

/* RAG Active Embedding Display */
.rag-active-embedding {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 16px;
}

.rag-active-embedding.configured {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 5%, var(--bg-secondary));
}

.rag-active-embedding-icon {
  font-size: 16px;
  color: var(--text-secondary);
}

.rag-active-embedding.configured .rag-active-embedding-icon {
  color: var(--accent);
}

.rag-active-embedding-text {
  flex: 1;
  font-size: 13px;
  color: var(--text-primary);
  font-weight: 500;
}

.rag-active-embedding .link-to-embedding-tab {
  font-size: 12px;
}

/* Embedding info icon in RAG collections dropdown */
.embedding-info-icon {
  opacity: 0.5;
}

.embedding-info-icon.has-model {
  opacity: 1;
  color: var(--primary-color);
}

/* Chat Memory Warning Box */
.chat-memory-warning {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 14px;
  background: color-mix(in srgb, #f59e0b 10%, var(--bg-secondary));
  border: 1px solid color-mix(in srgb, #f59e0b 30%, var(--border-color));
  border-radius: var(--radius);
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-secondary);
}

.chat-memory-warning i {
  color: #f59e0b;
  font-size: 14px;
  margin-top: 2px;
  flex-shrink: 0;
}

/* User Memory Management */
.user-memory-add-row {
  display: flex;
  gap: 8px;
  align-items: center;
}
.user-memory-add-row .form-input {
  flex: 1;
  min-width: 0;
}
.user-memory-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 320px;
  overflow-y: auto;
}
.user-memory-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 12px;
  background: var(--surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-primary);
}
.user-memory-item .memory-content {
  flex: 1;
  min-width: 0;
  word-break: break-word;
}
.user-memory-item .memory-source {
  font-size: 11px;
  color: var(--text-tertiary);
  margin-top: 2px;
}
.user-memory-item .memory-delete-btn {
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 2px 4px;
  font-size: 12px;
  flex-shrink: 0;
  opacity: 0;
  transition: opacity var(--transition-fast), color var(--transition-fast);
}
.user-memory-item:hover .memory-delete-btn {
  opacity: 1;
}
.user-memory-item .memory-delete-btn:hover {
  color: var(--error);
}
.user-memory-empty {
  text-align: center;
  padding: 20px 12px;
  color: var(--text-tertiary);
  font-size: 13px;
}

/* =====================================================
   Performance Settings Styles
   ===================================================== */

.settings-divider {
  height: 1px;
  background: var(--border-color);
  margin: 20px 0;
}

.settings-section-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Range slider styling */
input[type="range"] {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--border-color);
  outline: none;
  margin: 8px 0;
  cursor: pointer;
}

/* Chrome/Safari/Edge track */
input[type="range"]::-webkit-slider-runnable-track {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--border-color);
}

/* Firefox track */
input[type="range"]::-moz-range-track {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--border-color);
}

/* Chrome/Safari/Edge thumb */
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--primary-color);
  cursor: pointer;
  border: 2px solid var(--background);
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
  transition: transform var(--transition-fast);
  margin-top: -6px; /* Center thumb on track */
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.1);
}

/* Firefox thumb */
input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--primary-color);
  cursor: pointer;
  border: 2px solid var(--background);
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

input[type="range"]::-moz-range-thumb:hover {
  transform: scale(1.1);
}

/* Focus styles for accessibility */
input[type="range"]:focus {
  outline: none;
}

input[type="range"]:focus::-webkit-slider-thumb {
  box-shadow: 0 0 0 3px rgba(79, 182, 194, 0.3);
}

input[type="range"]:focus::-moz-range-thumb {
  box-shadow: 0 0 0 3px rgba(79, 182, 194, 0.3);
}

/* Value display next to label */
.value-display {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--primary);
  background: var(--surface);
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 8px;
}

/* Number inputs in settings */
.form-group input[type="number"] {
  -moz-appearance: textfield;
}

.form-group input[type="number"]::-webkit-inner-spin-button,
.form-group input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* Form hint text */
.form-hint {
  font-size: 12px;
  color: var(--text-tertiary);
  margin-top: 4px;
  line-height: 1.4;
}

/* Performance form rows - more equal sizing */
#performance-settings .form-row .form-group,
#ollama-settings .form-row .form-group,
#lmstudio-settings .form-row .form-group {
  flex: 1;
}

/* Nav icon for Font Awesome icons (no image) */
.nav-icon-fa {
  width: 20px;
  font-size: 14px;
  text-align: center;
  color: var(--text-secondary);
}

.settings-nav-item.active .nav-icon-fa {
  color: var(--primary);
}

/* =============================================================================
   FILE UPLOAD UI
   ============================================================================= */

/* Upload Dropdown */
.upload-dropdown {
  width: 280px;
}

/* Upload Drop Zone */
.upload-drop-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px 16px;
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  background: var(--surface);
  cursor: pointer;
  transition: all 0.15s ease;
  text-align: center;
}

.upload-drop-zone:hover,
.upload-drop-zone.drag-over {
  border-color: var(--primary-color);
  background: rgba(79, 182, 194, 0.05);
}

/* Disabled state while uploading - handled by inline JS styles */
.upload-drop-zone.uploading {
  pointer-events: none;
  cursor: not-allowed;
}

.upload-drop-zone i {
  font-size: 28px;
  color: var(--primary-color);
  margin-bottom: 8px;
}

.upload-main-text {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

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

/* Upload Progress */
.upload-progress {
  margin-top: 12px;
}

.upload-progress-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}

#upload-progress-text {
  font-size: 11px;
  color: var(--text-secondary);
}

.upload-cancel-btn {
  width: 22px;
  height: 22px;
  border: none;
  background: rgba(220, 53, 69, 0.1);
  color: #dc3545;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  transition: all var(--transition-fast);
}

.upload-cancel-btn:hover {
  background: #dc3545;
  color: white;
}

.upload-progress .progress-bar {
  height: 6px;
  background: var(--surface);
  border-radius: 3px;
  overflow: hidden;
}

.upload-progress .progress-fill {
  height: 100%;
  background: var(--primary-color);
  border-radius: 3px;
  transition: width 0.2s ease;
  width: 0%;
}

/* Chat input disabled during upload */
.chat-input-container.upload-locked .chat-input {
  background: var(--surface);
  opacity: 0.5;
  pointer-events: none;
}

.chat-input-container.upload-locked .send-btn {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Attached Files Preview */
.attached-files {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border-color);
  background: var(--surface);
}

.attached-files-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.attached-file {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  background: var(--surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 12px;
}

.attached-file .file-icon {
  color: var(--primary-color);
}

.attached-file .file-name {
  max-width: 150px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text-primary);
}

.attached-file .file-size {
  color: var(--text-tertiary);
  font-size: 10px;
}

.attached-file .remove-file {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border: none;
  background: transparent;
  color: var(--text-tertiary);
  cursor: pointer;
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.attached-file .remove-file:hover {
  background: var(--danger);
  color: white;
}

/* Upload button active state */
.upload-bar .input-action-btn.has-files {
  color: var(--primary-color);
  background: rgba(79, 182, 194, 0.1);
}

/* =============================================================================
   IMAGE CONTEXT MESSAGE - Shows uploaded image analysis in chat
   ============================================================================= */

.image-context-message {
  margin: 16px 0;
  padding: 0;
}

.image-context-container {
  background: linear-gradient(135deg, var(--surface) 0%, var(--surface-hover) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  max-width: 500px;
}

.image-context-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border-color);
}

.image-context-header i {
  color: var(--primary-color);
  font-size: 16px;
}

.image-context-title {
  flex: 1;
  font-weight: 600;
  font-size: 14px;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.image-context-badge {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  padding: 3px 8px;
  background: var(--primary-color);
  color: white;
  border-radius: 10px;
}

.image-context-preview {
  width: 100%;
  max-height: 300px;
  object-fit: contain;
  background: var(--background);
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.image-context-preview:hover {
  opacity: 0.9;
}

.image-context-description {
  padding: 16px;
}

.image-context-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 8px;
}

.image-context-label i {
  font-size: 12px;
  color: var(--primary-color);
}

.image-context-text {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-secondary);
  white-space: pre-wrap;
}

.image-context-hint {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: rgba(79, 182, 194, 0.1);
  border-top: 1px solid var(--border-color);
  font-size: 12px;
  color: var(--primary-color);
}

.image-context-hint i {
  font-size: 14px;
}

/* Compact version - just header, no preview/description */
.image-context-compact {
  max-width: 350px;
}

.image-context-compact .image-context-header {
  border-bottom: none;
  padding: 10px 14px;
}

.image-context-compact .image-context-badge {
  background: var(--success-color, #10b981);
}

/* =============================================================================
   DOCUMENT CONTEXT MESSAGE (for uploaded documents/PDFs)
   ============================================================================= */

.document-context-message {
  margin: 16px 0;
  padding: 0;
}

.document-context-container {
  background: linear-gradient(135deg, var(--surface) 0%, var(--surface-hover) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  max-width: 400px;
}

.document-context-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: var(--surface);
}

.document-context-header i {
  color: var(--warning-color, #f59e0b);
  font-size: 18px;
}

.document-context-header i.fa-file-pdf {
  color: #ef4444;
}

.document-context-header i.fa-file-word {
  color: #2563eb;
}

.document-context-header i.fa-file-excel {
  color: #10b981;
}

.document-context-title {
  flex: 1;
  font-weight: 600;
  font-size: 14px;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}

.document-context-size {
  font-size: 12px;
  color: var(--text-tertiary);
  flex-shrink: 0;
}

.document-context-badge {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  padding: 3px 8px;
  background: var(--success-color, #10b981);
  color: white;
  border-radius: 10px;
  flex-shrink: 0;
}

.document-context-collection {
  display: block;
  padding: 8px 16px;
  font-size: 12px;
  color: var(--text-secondary);
  background: var(--surface);
  border-top: 1px solid var(--border-color);
}

.document-context-hint {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: rgba(79, 182, 194, 0.1);
  border-top: 1px solid var(--border-color);
  font-size: 12px;
  color: var(--primary-color);
}

.document-context-hint i {
  font-size: 14px;
  flex-shrink: 0;
}

.document-context-warning {
  background: rgba(245, 158, 11, 0.15);
  color: var(--warning-color, #f59e0b);
}

.document-context-success {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success-color, #10b981);
}

.document-context-badge.badge-warning {
  background: var(--warning-color, #f59e0b);
}

/* RAG Status indicators - reuse same pattern */
.qdrant-status,
.embedding-status,
.rerank-status {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px;
  background: var(--surface);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
}

.qdrant-status .status-indicator,
.embedding-status .status-indicator,
.rerank-status .status-indicator {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--text-tertiary);
}

.qdrant-status .status-indicator.connected,
.embedding-status .status-indicator.connected,
.rerank-status .status-indicator.connected {
  background: var(--success);
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
}

.qdrant-status .status-indicator.disconnected,
.embedding-status .status-indicator.disconnected,
.rerank-status .status-indicator.disconnected {
  background: var(--text-tertiary);
}

.qdrant-status .status-indicator.error,
.embedding-status .status-indicator.error,
.rerank-status .status-indicator.error {
  background: var(--danger);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.2);
}

.qdrant-status .status-indicator.connecting,
.embedding-status .status-indicator.connecting,
.rerank-status .status-indicator.connecting {
  background: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(79, 182, 194, 0.2);
  animation: status-pulse 1s ease-in-out infinite;
}

@keyframes status-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.qdrant-status .status-text,
.embedding-status .status-text,
.rerank-status .status-text {
  font-size: 13px;
  color: var(--text-secondary);
}

/* Settings section title */
.settings-section-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 8px 0;
}

.settings-section-title i {
  color: var(--primary-color);
}

/* Toggle Switch for Settings panels (toggle-label style) */
.toggle-label {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.01em;
}

.toggle-label input[type="checkbox"] {
  display: none;
}

.toggle-label .settings-toggle {
  display: inline-block;
  position: relative;
  width: 44px;
  height: 24px;
  background: #ccc;
  border-radius: 12px;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

/* Dark mode toggle background */
[data-theme="dark"] .toggle-label .settings-toggle {
  background: #555;
}

.toggle-label .settings-toggle::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background: white;
  border-radius: 50%;
  transition: all var(--transition-fast);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.toggle-label input[type="checkbox"]:checked + .settings-toggle {
  background: var(--primary-color);
}

.toggle-label input[type="checkbox"]:checked + .settings-toggle::after {
  left: 22px;
}

/* Toggle-controlled field groups */
.toggle-fields {
  transition: opacity 0.2s ease;
}

.toggle-fields.fields-disabled {
  opacity: 0.4;
  pointer-events: none;
  user-select: none;
}

/* Test buttons stay clickable even when parent is disabled */
.toggle-fields.fields-disabled .test-btn[data-toggle-exempt] {
  pointer-events: auto;
  opacity: 1;
  cursor: pointer;
}

.toggle-fields.fields-disabled input,
.toggle-fields.fields-disabled select,
.toggle-fields.fields-disabled textarea,
.toggle-fields.fields-disabled button:not([data-toggle-exempt]) {
  cursor: not-allowed;
}

/* RAG Connection Status - stacked indicators */
.rag-connection-status {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 12px;
}

/* RAG Response in Chat */
.rag-response {
  background: linear-gradient(135deg, rgba(79, 182, 194, 0.05), rgba(79, 182, 194, 0.02));
  border-left: 3px solid var(--primary-color);
  padding: 12px 16px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 8px 0;
}

.rag-sources {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border-color);
}

.rag-sources-title {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.rag-source-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-secondary);
  padding: 4px 0;
}

.rag-source-item i {
  color: var(--primary-color);
  font-size: 10px;
}

/* RAG Toggle Button in Chat Input */
.rag-toggle-bar {
  display: flex;
  align-items: center;
}

.rag-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

.rag-btn i {
  font-size: 14px;
}

.rag-label {
  font-size: 12px;
  font-weight: 500;
}

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

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

.rag-btn:not(.active) {
  color: var(--text-secondary);
}

.rag-btn:not(.active):hover {
  color: var(--primary-color);
  background: var(--surface-hover);
}

/* RAG indicator when active */
.chat-input-box.rag-active {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.15);
}

/* ── Drag & Drop visual feedback ── */
.chat-input-box.drag-over {
  border-color: var(--primary-color);
  border-style: dashed;
  box-shadow: 0 0 0 3px rgba(79, 182, 194, 0.2);
  background: rgba(79, 182, 194, 0.04);
}

.chat-input-box.rag-active::before {
  content: 'RAG Query';
  position: absolute;
  top: -20px;
  left: 12px;
  font-size: 10px;
  font-weight: 500;
  color: var(--primary-color);
  background: var(--background);
  padding: 0 4px;
}

/* RAG Sources Display in Messages */
.rag-sources {
  margin-top: 16px;
  padding: 12px 14px;
  background: var(--surface-hover);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--primary-color);
}

.rag-sources-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.rag-sources-title i {
  font-size: 14px;
}

.rag-source-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  margin: 4px 0;
  font-size: 13px;
  color: var(--text-secondary);
  background: var(--background);
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}

.rag-source-item:hover {
  color: var(--text-primary);
  background: var(--surface-active);
}

.rag-source-item i {
  color: var(--primary-color);
  font-size: 12px;
  opacity: 0.8;
}

/* RAG Document Selector */
.rag-doc-selector {
  display: flex;
  align-items: center;
  position: relative;
}

.rag-doc-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: var(--radius-md);
  font-size: 12px;
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

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

.rag-doc-btn i {
  font-size: 12px;
}

.rag-doc-count {
  font-weight: 500;
  color: var(--primary-color);
}

.rag-doc-dropdown {
  position: absolute;
  bottom: 100%;
  left: 0;
  width: 320px;
  max-height: 400px;
  margin-bottom: 8px;
  background: var(--background);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  z-index: 100;
}

.rag-doc-loading {
  padding: 30px 20px;
  text-align: center;
  color: var(--text-tertiary);
  font-size: 13px;
}

.rag-doc-loading i {
  font-size: 20px;
  margin-bottom: 8px;
  display: block;
  color: var(--primary-color);
}

.rag-doc-empty {
  padding: 30px 20px;
  text-align: center;
  color: var(--text-tertiary);
  font-size: 13px;
  line-height: 1.5;
}

.rag-doc-empty i {
  font-size: 24px;
  margin-bottom: 8px;
  display: block;
  opacity: 0.5;
}

.rag-doc-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
}

.rag-doc-item:hover {
  background: var(--surface-hover);
}

.rag-doc-item input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--primary-color);
  cursor: pointer;
}

.rag-doc-item-info {
  flex: 1;
  min-width: 0;
}

.rag-doc-item-name {
  font-size: 13px;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.rag-doc-item-chunks {
  font-size: 11px;
  color: var(--text-tertiary);
}

/* RAG Collection Selector - Clean Design */
.rag-search-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: var(--surface);
  border-bottom: 1px solid var(--border-color);
}

.rag-search-bar > i {
  color: var(--text-tertiary);
  font-size: 13px;
}

.rag-search-bar input {
  flex: 1;
  min-width: 0;
  border: none;
  background: transparent;
  font-size: 13px;
  color: var(--text-primary);
  outline: none;
}

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

.rag-search-actions {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: auto;
}

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

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

.rag-action-btn i {
  font-size: 12px;
}

.rag-collection-list {
  max-height: 50vh;
  overflow-y: auto;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.rag-collection-item.hidden {
  display: none;
}

.rag-collection-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--surface);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 13px;
}

.rag-collection-item:hover {
  background: var(--surface-hover);
  border-color: var(--border-color);
}

.rag-collection-item.selected {
  background: rgba(79, 182, 194, 0.12);
  border-color: var(--primary-color);
}

.rag-collection-item input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--primary-color);
  cursor: pointer;
  flex-shrink: 0;
}

.rag-collection-item-name {
  flex: 1;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 400;
}

.rag-collection-item.selected .rag-collection-item-name {
  color: var(--primary-color);
  font-weight: 500;
}

.rag-collection-item-count {
  font-size: 10px;
  color: var(--text-secondary);
  background: var(--surface);
  padding: 2px 6px;
  border-radius: 10px;
}

/* RAG Category Groups */
.rag-category-group {
  margin-bottom: 12px;
}

.rag-category-group.hidden {
  display: none;
}

.rag-category-group:last-child {
  margin-bottom: 0;
}

.rag-category-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: linear-gradient(135deg, var(--surface) 0%, var(--background) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.rag-category-header:hover {
  border-color: var(--primary-color);
  background: linear-gradient(135deg, rgba(79, 182, 194, 0.08) 0%, var(--surface) 100%);
}

.rag-category-header i {
  color: var(--primary-color);
  font-size: 13px;
  width: 16px;
  text-align: center;
}

.rag-category-chevron {
  font-size: 10px !important;
  width: 12px !important;
  transition: transform 0.2s ease;
}

.rag-category-select-all {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  opacity: 0;
  transition: all 0.2s ease;
  padding: 0;
  flex-shrink: 0;
  font-size: 12px;
}

.rag-category-header:hover .rag-category-select-all,
.rag-category-select-all.all-selected,
.rag-category-select-all.some-selected {
  opacity: 1;
}

.rag-category-select-all:hover {
  background: rgba(79, 182, 194, 0.15);
  color: var(--primary-color);
}

.rag-category-select-all.all-selected {
  color: var(--primary-color);
}

.rag-category-select-all.some-selected {
  color: var(--text-secondary);
  opacity: 0.6;
}

.rag-category-group.collapsed .rag-category-chevron {
  transform: rotate(-90deg);
}

.rag-category-group.collapsed .rag-category-items {
  display: none;
}

.rag-category-header span:not(.rag-category-count) {
  flex: 1;
  font-weight: 500;
}

.rag-category-count {
  font-size: 11px;
  font-weight: 600;
  color: var(--primary-color);
  background: rgba(79, 182, 194, 0.15);
  padding: 3px 8px;
  border-radius: 12px;
  min-width: 24px;
  text-align: center;
}

.rag-category-items {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding-left: 20px;
  border-left: 2px solid rgba(79, 182, 194, 0.3);
  margin-left: 8px;
}

.rag-category-items .rag-collection-item {
  border: none;
  background: var(--surface);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  margin: 0;
}

.rag-category-items .rag-collection-item:hover {
  background: var(--surface-hover);
}

.rag-category-items .rag-collection-item.selected {
  background: rgba(79, 182, 194, 0.12);
}

.rag-category-items .rag-collection-item.selected .rag-collection-item-name {
  color: var(--primary-color);
  font-weight: 500;
}

/* Remove old select styles */
.rag-collection-select {
  display: none;
}

/* =============================================================================
   ATTACHMENT PREVIEWS (input area chips)
   ============================================================================= */
.attachment-previews {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 8px 12px;
  max-height: 140px;
  overflow-y: auto;
}

.attachment-previews.hidden {
  display: none;
}

.attachment-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 4px 8px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  max-width: 220px;
}

.attachment-chip i {
  color: var(--primary-color);
  font-size: 0.85rem;
}

.attachment-thumb {
  width: 32px;
  height: 32px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.attachment-name {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 120px;
}

.attachment-size {
  color: var(--text-tertiary);
  font-size: 0.7rem;
  white-space: nowrap;
}

.attachment-remove {
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 2px 4px;
  font-size: 0.75rem;
  border-radius: 50%;
  line-height: 1;
}

.attachment-remove:hover {
  color: #ef4444;
  background: rgba(239, 68, 68, 0.1);
}

/* =============================================================================
   MESSAGE ATTACHMENTS (inside chat bubbles)
   ============================================================================= */
.message-attachments {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 8px;
}

.message-attachment-thumb {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  cursor: pointer;
}

.message-attachment-thumb:hover {
  opacity: 0.85;
}

.message-attachment-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(79, 182, 194, 0.1);
  color: var(--primary-color);
  border-radius: var(--radius-sm);
  padding: 4px 8px;
  font-size: 0.78rem;
  font-weight: 500;
}

/* =========================================================================
   PLAN BADGE & FEATURE GATING
   ========================================================================= */

/* Plan badge in sidebar user-menu trigger */
.plan-badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 2px 7px;
  border-radius: 9999px;
  line-height: 1.4;
  white-space: nowrap;
  margin-left: 4px;
}

.plan-badge-free {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
}

.plan-badge-pro {
  background: linear-gradient(135deg, rgba(79, 182, 194, 0.2), rgba(79, 182, 194, 0.08));
  color: var(--primary-color);
  border: 1px solid rgba(79, 182, 194, 0.35);
}

.plan-badge-teams {
  background: linear-gradient(135deg, rgba(168, 130, 255, 0.2), rgba(168, 130, 255, 0.08));
  color: #a882ff;
  border: 1px solid rgba(168, 130, 255, 0.35);
}

/* ── Plan badge inside popup menu header ── */
.menu-plan-badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.6rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 2px 7px;
  border-radius: 9999px;
  line-height: 1.4;
  white-space: nowrap;
  margin-left: auto;
  flex-shrink: 0;
}

.menu-plan-badge.badge-free {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-tertiary);
  border: 1px solid var(--border-color);
}

.menu-plan-badge.badge-pro {
  background: linear-gradient(135deg, rgba(79, 182, 194, 0.2), rgba(79, 182, 194, 0.08));
  color: var(--primary-color);
  border: 1px solid rgba(79, 182, 194, 0.35);
}

.menu-plan-badge.badge-teams {
  background: linear-gradient(135deg, rgba(168, 130, 255, 0.2), rgba(168, 130, 255, 0.08));
  color: #a882ff;
  border: 1px solid rgba(168, 130, 255, 0.35);
}

/* ── Upgrade button in user menu ── */
.user-menu-upgrade {
  color: var(--primary-color) !important;
}
.user-menu-upgrade i {
  color: var(--primary-color) !important;
}
.user-menu-upgrade:hover {
  background: rgba(79, 182, 194, 0.08) !important;
}

/* Credit counter in sidebar user-menu trigger */
.credit-counter {
  display: inline-flex;
  align-items: center;
  font-size: 0.6rem;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 9999px;
  line-height: 1.4;
  white-space: nowrap;
  margin-left: 4px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  transition: background 0.3s, color 0.3s, border-color 0.3s;
}

.credit-counter::before {
  content: '\f0e7'; /* FontAwesome bolt icon */
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 0.5rem;
  margin-right: 3px;
  opacity: 0.7;
}

/* Low credit warning (≤20% remaining) */
.credit-counter.credit-low {
  background: rgba(255, 180, 50, 0.15);
  color: #f0a030;
  border-color: rgba(255, 180, 50, 0.35);
  animation: credit-pulse 2s ease-in-out infinite;
}

/* Zero credits state */
.credit-counter.credit-zero {
  background: rgba(255, 80, 80, 0.12);
  color: #e05555;
  border-color: rgba(255, 80, 80, 0.3);
  animation: none;
}

@keyframes credit-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.65; }
}

/* Feature-locked overlay for action pills and settings tabs */
.feature-locked {
  position: relative;
  pointer-events: auto;
  cursor: not-allowed;
}

.feature-locked > * {
  opacity: 0.35;
  pointer-events: none;
}

.feature-locked::after {
  content: '\f023'; /* FontAwesome lock icon */
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 0.7rem;
  color: var(--text-muted);
  pointer-events: none;
  z-index: 2;
}

/* Settings nav item locked state */
.settings-nav-item.feature-locked {
  opacity: 0.45;
  pointer-events: auto;
  cursor: not-allowed;
}

.settings-nav-item.feature-locked::after {
  content: '\f023';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 0.6rem;
  position: static;
  transform: none;
  margin-left: 6px;
  color: var(--text-muted);
}

/* ── Upgrade Modal ── */
.upgrade-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  animation: upgradeOverlayIn 0.2s ease-out;
}

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

.upgrade-modal {
  background: var(--background);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 0;
  max-width: 640px;
  width: 92%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.2), 0 0 0 1px var(--border-color);
  animation: upgradeModalIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes upgradeModalIn {
  from { opacity: 0; transform: scale(0.92) translateY(16px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

/* Close button */
.upgrade-modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  background: none;
  border: none;
  color: var(--text-tertiary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast), color var(--transition-fast);
  line-height: 1;
  z-index: 1;
}

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

/* Header section */
.upgrade-modal-header {
  padding: 28px 28px 0;
  text-align: center;
}

.upgrade-modal-icon {
  margin-bottom: 12px;
  display: inline-flex;
}

.upgrade-modal-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 6px;
  letter-spacing: -0.01em;
}

.upgrade-modal-subtitle {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.4;
}

/* Plans container — side by side */
.upgrade-modal-plans {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  padding: 20px 24px 0;
}

/* Plan card */
.upgrade-modal-plan {
  background: var(--surface);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
  display: flex;
  flex-direction: column;
}

.upgrade-modal-plan:hover {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(79, 182, 194, 0.10);
}

/* Recommended plan highlight */
.upgrade-plan-recommended {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(79, 182, 194, 0.18);
}

.upgrade-plan-top {
  padding: 18px 16px 14px;
}

.upgrade-plan-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: rgba(79, 182, 194, 0.12);
  color: var(--primary-color);
  margin-bottom: 8px;
}

.upgrade-plan-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.upgrade-plan-price {
  display: flex;
  align-items: baseline;
  gap: 2px;
}

.upgrade-plan-amount {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.upgrade-plan-period {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  font-weight: 500;
}

.upgrade-plan-divider {
  height: 1px;
  background: var(--border-color);
  margin: 0 16px;
}

/* "Everything in X, plus:" label */
.upgrade-plan-includes {
  padding: 12px 16px 0;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary-color);
  letter-spacing: 0.01em;
}

/* Features list */
.upgrade-plan-features {
  list-style: none;
  padding: 14px 16px 16px;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.upgrade-plan-features li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.3;
}

.upgrade-plan-features li i {
  color: #10b981;
  font-size: 0.65rem;
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(16, 185, 129, 0.1);
  border-radius: 50%;
}

.upgrade-plan-features li span {
  color: var(--text-primary);
  font-weight: 500;
}

/* Per-plan action button */
.upgrade-plan-action {
  padding: 0 16px 16px;
}

/* Action buttons */
.upgrade-modal-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 11px 16px;
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  background: var(--primary-color);
  color: #fff;
  box-shadow: 0 1px 3px rgba(79, 182, 194, 0.3);
}

.upgrade-modal-btn:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(79, 182, 194, 0.35);
}

.upgrade-modal-btn:active {
  transform: translateY(0);
  box-shadow: 0 1px 3px rgba(79, 182, 194, 0.3);
}

.upgrade-modal-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

/* Training data note */
.upgrade-modal-note {
  margin: 14px 24px 0;
  padding: 10px 14px;
  background: rgba(79, 182, 194, 0.06);
  border: 1px solid rgba(79, 182, 194, 0.15);
  border-radius: var(--radius-md);
  font-size: 0.72rem;
  color: var(--text-secondary);
  line-height: 1.45;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.upgrade-modal-note i {
  color: var(--primary-color);
  font-size: 0.75rem;
  margin-top: 1px;
  flex-shrink: 0;
}

.upgrade-modal-note a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  margin-left: 2px;
}

.upgrade-modal-note a:hover {
  text-decoration: underline;
}

/* Inline error banner inside upgrade modal */
.upgrade-modal-error {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 24px 8px;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #ef4444;
  font-size: 0.85rem;
  line-height: 1.4;
  animation: upgradeErrorIn 0.25s ease;
}
.upgrade-modal-error i {
  flex-shrink: 0;
  font-size: 1rem;
}
@keyframes upgradeErrorIn {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Footer */
.upgrade-modal-footer {
  padding: 16px 24px 22px;
  text-align: center;
}

.upgrade-modal-btn-secondary {
  display: inline-block;
  padding: 8px 20px;
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  background: transparent;
  color: var(--text-tertiary);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.upgrade-modal-btn-secondary:hover {
  background: var(--surface);
  color: var(--text-secondary);
}

/* Responsive — stack plans vertically on small screens */
@media (max-width: 560px) {
  .upgrade-modal {
    width: 95%;
    max-width: 400px;
    border-radius: var(--radius-lg);
  }

  .upgrade-modal-plans {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 16px 16px 0;
  }

  .upgrade-modal-header {
    padding: 24px 20px 0;
  }

  .upgrade-modal-footer {
    padding: 14px 16px 18px;
  }

  .upgrade-modal-title {
    font-size: 1.15rem;
  }

  .upgrade-plan-amount {
    font-size: 1.4rem;
  }
}

/* ─── Dev Plan Switcher (dev mode only) ─── */
.dev-plan-switcher {
  position: fixed;
  bottom: 12px;
  left: 12px;
  z-index: 99999;
  display: flex;
  align-items: center;
  gap: 6px;
  background: #1a1a2e;
  border: 1px solid #333;
  border-radius: 8px;
  padding: 4px 10px;
  font-size: 13px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.4);
  opacity: 0.85;
  transition: opacity 0.2s;
}
.dev-plan-switcher:hover {
  opacity: 1;
}
.dev-plan-label {
  font-size: 14px;
}
.dev-plan-switcher select {
  background: #2a2a3e;
  color: #e0e0e0;
  border: 1px solid #444;
  border-radius: 4px;
  padding: 3px 6px;
  font-size: 12px;
  cursor: pointer;
  outline: none;
}
.dev-plan-switcher select:focus {
  border-color: var(--primary-color);
}